U.S. patent application number 13/376264 was filed with the patent office on 2012-05-10 for device and method for supplying a moving body, in particular a ship, with on-shore power.
This patent application is currently assigned to NEW GENERATION NATURAL GAS. Invention is credited to Damien Feger.
Application Number | 20120111681 13/376264 |
Document ID | / |
Family ID | 41572491 |
Filed Date | 2012-05-10 |
United States Patent
Application |
20120111681 |
Kind Code |
A1 |
Feger; Damien |
May 10, 2012 |
DEVICE AND METHOD FOR SUPPLYING A MOVING BODY, IN PARTICULAR A
SHIP, WITH ON-SHORE POWER
Abstract
A device and a method for powering a berthed ship. The powering
device includes an onboard connector, a shuttle (40), a traction
element (41) for the shuttle, which includes elements for engaging
with a ground connector (30) matching the onboard connector, the
traction element being provided for pulling the shuttle and the
ground connector when they are engaged such that the ground
connector is in electrical continuity with the onboard connector.
The device can be used for powering a ship without running the
onboard generators thereof. For methane tankers in particular, the
device can be used for supplying electricity to the grid by burning
the gas vapors. The device can be automated, thereby avoiding
fatigue and electrical risks.
Inventors: |
Feger; Damien; (Vernon,
FR) |
Assignee: |
NEW GENERATION NATURAL GAS
Paris
FR
|
Family ID: |
41572491 |
Appl. No.: |
13/376264 |
Filed: |
April 22, 2010 |
PCT Filed: |
April 22, 2010 |
PCT NO: |
PCT/FR10/50769 |
371 Date: |
January 10, 2012 |
Current U.S.
Class: |
191/12.4 |
Current CPC
Class: |
B63J 2003/043 20130101;
B63J 3/04 20130101 |
Class at
Publication: |
191/12.4 |
International
Class: |
B63J 3/04 20060101
B63J003/04 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 5, 2009 |
FR |
0902725 |
Claims
1. A device (1) for providing a moving body, in particular a ship
(6), with an on-shore power supply, characterized in that it
comprises an on-board connector (17), a shuttle (40), haulage means
(41, 42) for the shuttle, the shuttle comprising means to engage
with an on-shore connector (30, 130) mating with the said on-board
connector, the haulage means being designed to haul the said
shuttle and the said on-shore connector when they are engaged, so
that the said on-shore connector is brought into electric
continuity with the said on-board connector.
2. The device according to claim 1, characterized in that the
haulage means comprise a chain (41) and a winch (42), a first end
of the said chain being connected at least indirectly to the said
shuttle, the second end of the said chain being free.
3. The device according to claim 1, characterized in that it
comprises means (10) for maintaining the on-board connector
substantially rigid relative to the hull of the ship.
4. The device according to claim 3, characterized in that the
on-board connector (17) is carried by a jib (10), the said jib
being designed to be mobile between a retracted position in which
the on-board connector is sheltered inside a hull (11) of the ship,
and a deployed position in which the on-board connector is
distanced away outside the hull.
5. The device according to claim 4, characterized in that the jib
comprises a nacelle (15), the on-board connector and the winch
being housed inside the said nacelle, and the chain being arranged
coiled inside a compartment (87) of the said nacelle.
6. The device according to claim 4, characterized in that the jib
comprises a substantially horizontal beam (14) arranged underneath
a deck of the ship, and rack means (22) to move the said beam
substantially horizontally.
7. The device according to claim 4, characterized in that a distal
end of the jib comprises a panel (13) matching an opening (12) in
the hull (11) so that, in the retracted position, the said panel
comes to close the said opening and ensure the continuity of the
said hull.
8. The device according to claim 4, characterized in that the jib
is designed to be deployed substantially transverse to the
ship.
9. The device according to claim 4, characterized in that the jib
is provided so that it is deployed substantially longitudinally to
the ship, preferably at the stern of the said ship.
10. The device according to claim 4, characterized in that it
comprises at least one cable (18) to connect electrically the
on-board connector (17) with on-board electrical equipment, and a
cable tray (18) extending through decks (8) below the jib and
leading, via a lower end, preferably into the engine room (9), the
said cable and the said tray being arranged so that the cable,
beyond the said lower end, forms a loop (19) preferably a hanging
loop.
11. The device according to claim 1 characterized in that the
connectors (17; 30, 130) each comprise several connection elements
(16, 32) in identical number distributed about a respective axis
(X17, X30), and respective orienting means (51, 85) designed to
cooperate with the shuttle (40) so that at the time of connection
each element (32) of the on-shore connector (30, 130) is aligned
with a corresponding element (16) of the on-board connector
(17).
12. The device according to claim 11, characterized in that the
connectors (17; 30, 130) each comprise three connection elements
(16, 32), the shuttle (40) having a triangular cross-section and
the orienting means (51, 85) of at least one of the connectors (30,
130; 17) comprising a set of three rollers (67) provided to engage
with the triangular section of the said shuttle (40), so that the
said connector and the said shuttle are oriented relative to one
another at a pitch of 120 degrees about the respective axis (X30,
X17).
13. The device according to claim 1, characterized in that one end
of the shuttle (40) comprises a hook provided to engage with mating
hooking means (53) of the on-shore connector (30).
14. The device according to claim 1, characterized in that it
comprises a container (25) and a chimney (26) carried by the said
container (25), the on-shore connector (30) being housed in the
chimney (26), the container (25) acting as reserve for cable (33)
electrically connected to the on-shore connector (30), each cable
(33) being provided to extend through the chimney (26) as and when
the on-shore connector is hauled towards the on-board connector
(17).
15. The device according to claim 14, characterized in that the
chimney (26) is mounted mobile in translation relative to the said
container.
16. The device according to claim 14, characterized in that it
further comprises a floating pontoon on which the container (25) is
installed, each cable (33) being connected flexibly to an on-shore
electric network, the said floating pontoon preferably being
motorized.
17. The device according to claim 1, characterized in that it
comprises floating means (110) for the on-shore connector (130) and
preferably propelling means (111).
18. The device according to claim 17, characterized in that it
comprises ballast means (116) adapted to sink the on-shore
connector when it is not connected with an on-board connector.
19. The device according to claim 17 characterized in that it
comprises means (112, 114) to allow axial sliding of the floating
means relative to the connection means, so that the floating means
do not interfere mechanically with an on-board part (2) of the
device (1) when the connectors are connected together.
20. The device according to claim 17, characterized in that it
comprises means (120) for dry docking and launching the connector
(130) the means (120) allowing the said connector to be stored
above a quayside (4), the said means preferably comprising a jib
(121) mobile about a vertical axis (X121) and a shuttle (140)
designed to engage with engaging means (53) of the said connector
(130).
21. A method for providing a moving body, in particular a ship (6),
with an on-shore power supply, characterized in that an on-board
connector (17) is maintained substantially rigid relative to a hull
of the said ship, a shuttle (40) is engaged with an on-shore
connector (30), then said shuttle and said on-shore connector are
hauled until the said on-shore connector is in electric continuity
with the said on-board connector.
22. The method according to claim 21, characterized in that firstly
said shuttle is automatically oriented relative to the on-shore
connector, then said shuttle is oriented automatically relative to
the on-board connector, before the said on-shore connector is
placed in electric continuity with the said on-board connector.
Description
[0001] The present invention relates to the field of high power
electricity supply. It more particularly concerns a device and a
method for supplying a moving body when it is stationary, in
particular a ship, after it has berthed.
[0002] A ship, for example a container ship or a cruise ship, when
it is at berth needs considerable electric power. This power is
generally of the order of several megawatts, typically 8 to 12
megawatts for three-phase voltages of 6 500 V or 11 000 V. This
power is generally provided by on-board diesel generating units.
These on-board generators have low yield, use costly energy and are
highly polluting. In addition, a methane carrier which uses the
gases evaporating from its tanks as fuel is often able to produce
more energy than it consumes. It can therefore possibly export
current to an on-shore network in competitive manner.
[0003] It has therefore appeared of importance to design devices
allowing exchanges of electric power between a ship and the
quayside, in either direction. These exchange systems must have a
universal nature and be of great simplicity of use, since a ship
must be able to use such systems in most of the ports at which it
may come to dock.
[0004] The first systems of this type are based on the adaptation
of existing technologies for manual connectors, in the most
successful configurations, with systems of motorized reels
installed on the ship. The reels facilitate the storage and
handling of electric cables on board the ship. When the ship has
docked, the reels are unwound and the cables are extended onto the
land via a roller guide which carries them to above the quayside.
On the quay, operators take up the cables and haul them towards
connection boxes to connect their end connectors to the port power
network. Mr. Ottonel Popesco gives a description of this technique
in a paper titled "Cavotec Alternative Maritime Power Supply"
presented at the "Clean Ship Conference" on 7-9 Sep. 2007.
[0005] This technique has numerous drawbacks as soon as the powers
involved are high, typically as soon as they exceed a few hundred
kilowatts, which is generally the case. For example: [0006] the
weight of the cables and connectors soon becomes substantial
requiring the presence of heavy labour to ensure the handling
thereof, whilst observing the weight limits that an operator can
carry as required by regulations, typically 25 kg; [0007] the high
electric voltages, requiring increased dimensions of the conductor
insulations, not only lead to an increase in cable weight but also
in their stiffness making the handling thereof more difficult and
hazardous; [0008] for high powers, typically higher than 4 MW, it
is necessary to use several systems of this type in parallel, which
increases the costs, risks and the complexity of these operations
accordingly; [0009] the cost of the cable and of the reel is high,
as is the on-board space requirement, even though this equipment is
only used a fraction of the time of a ship's life, which makes
their amortization difficult. [0010] the space taken up by the
cable and its reel may limit the space allocated to the ship's
payload; [0011] since the operators are led to handling high
voltage cables and connectors directly, specific procedures and
qualifications are required which generate high costs and
operational constraints to avoid risks for personnel; and [0012] in
the event of an emergency, if the ship is compelled to leave its
berth rapidly when the supply system is energized, there is a
strong risk of the formation of an electric arc to which is added
the falling of equipment onto surrounding personnel or the public,
even a "whiplash" if the cables rupture.
[0013] It is the objective of the invention to propose a device and
method which allows the solving of the aforementioned
disadvantages, and in particular to ensure the rapid setting up of
said supply in full safety, adapted to the powers required by high
tonnage ships. In addition, it is one objective of the invention to
limit the number, the size, the complexity and more generally the
volume of the on-board components of the device.
[0014] According to the invention, a said device for providing a
moving body, in particular a ship, with an on-shore power supply is
characterized in that it comprises an on-board connector, a
shuttle, means for hauling the shuttle, the shuttle comprising
means to engage with an on-shore connector mating with the on-board
connector, the haulage means being provided to haul the shuttle and
the on-shore connector when they are engaged so that the on-shore
connector is brought into electric continuity with the on-board
connector. The haulage means may comprise a chain and winch, a
first end of the chain being connected at least in part to the
shuttle, the second end of the chain being free.
[0015] Preferably it comprises means to maintain the on-board
connector substantially rigidly relative to the ship's hull.
[0016] The on-board connector can be carried by a jib mobile
between a retracted position in which the on-board connector is
sheltered inside the hull of the ship, and a deployed position in
which the on-board connector lies distant outside the hull. This
jib may advantageously comprise a nacelle, the on-board connector
and the winch being housed in the said nacelle, and the chain being
arranged so that it can be coiled inside a compartment of the said
nacelle.
[0017] The jib may also comprise a substantially horizontal beam
arranged underneath a deck of the ship, and rack means to move the
beam substantially horizontally.
[0018] Advantageously, a distal end of the jib comprises a panel
matching an opening in the hull so that, in the retracted position
of the jib, the panel comes to close the opening, thereby ensuring
the continuity of the hull.
[0019] The jib may be designed so that it is deployed substantially
transversally to the ship. It can also be designed so that it is
deployed substantially longitudinally to the ship, preferably at
the stern of the ship.
[0020] The device may further comprise at least one cable to
connect the on-board connector electrically with on-board electric
equipment, and a tray extending through the decks below the jib and
leading via a lower end preferably into an engine room, the cable
and the cable tray being arranged so that the cable beyond the
lower end of the tray forms a loop, preferably a suspended
loop.
[0021] The connectors may each comprise several connection elements
in identical number, distributed around a respective axis, and
respective orienting means provided to cooperate with the shuttle
so that, at the time of a connection, each on-shore connector
element is aligned with a corresponding element of the on-board
connector.
[0022] In one embodiment, the connectors each comprise three
connection elements, the shuttle having a triangular cross-section,
and the orienting means of at least one of the connectors
comprising a set of three rollers designed to engage with the
triangular section of the shuttle, so that the connector and the
shuttle are oriented relative to one another at a pitch of 120
degrees around the respective axis. Each of the three connection
elements may be provided for a respective phase of the three-phase
supply. Each connector may also comprise three other connection
elements, these also being distributed around the respective axis
and provided for the neutral of the three-phase supply.
Nonetheless, the three connection elements may also be provided
both for a respective phase and for neutral.
[0023] One end of the shuttle may comprise a hook provided to
engage with mating hooking means of the on-shore connector.
[0024] The device may comprise a container and a chimney carried by
the container, the on-shore connector being housed in the chimney,
the container acting as reserve for cable electrically connected to
the on-shore connector, each cable being provided so that it
extends through the chimney as and when the on-shore connector is
hauled towards the on-board connector. The chimney is
advantageously mounted mobile in translation relative to the said
container. The container may be arranged on the quayside or the
device may comprise a floating pontoon on which the container is
installed, each cable being flexibly connected to an on-shore power
supply. The floating pontoon is preferably motorized.
[0025] In another embodiment, the device may comprise floating
means for the on-shore connector and preferably propelling means.
Said on-shore connector may further comprise ballast means adapted
to sink the on-shore connector when it is not connected to an
on-board connector. It may also comprise means to cause the axial
sliding of the floating means relative to the connection means, so
that the floating means do not mechanically interfere with an
on-board part of the device when the connectors are connected
together.
[0026] According to the invention, a method for providing a moving
body, in particular a ship, with an on-shore power supply is
characterized in that an on-board connector is maintained
substantially rigid relative to a hull of the ship, and a shuttle
is engaged with an on-shore connector, then the shuttle and the
on-shore connector are hauled until the on-shore connector is in
electric continuity with the on-board connector. Preferably, first
the shuttle is automatically oriented relative to the on-shore
connector, and then the shuttle is automatically oriented relative
to the on-board connector, before the on-shore connector comes into
electric continuity with the on-board connector.
[0027] In this document, as in the following description, by
"on-board" is meant any element or part of the connection device
which is part of the ship and moves together with it. In contrast,
the remainder of the device and its constituent elements generally
connected to a port installation are termed "on-shore". By
convention, it is considered that the on-shore part of the device
lies upstream of its on-board part.
[0028] Several embodiments of the invention are described below as
non-limiting examples, with reference to the appended drawings in
which:
[0029] FIG. 1 is a schematic cross-sectional, elevation view of a
device according to the invention, applied to the power supply of a
ship of which a partial sectional view is shown;
[0030] FIG. 2 is a perspective view of the device in a similar
position to the position in FIG. 1;
[0031] FIG. 3 is a perspective overhead view of an on-shore part of
the device in FIG. 1, designed to be arranged on a quayside;
[0032] FIG. 4 is a perspective, partial sectional view of an
on-shore connector for the device in FIG. 1;
[0033] FIG. 5 is a perspective sectional view of a connection
element for the on-shore connector in FIG. 3;
[0034] FIG. 6 is a partial sectional view of an on-board connector
for the device in FIG. 1;
[0035] FIG. 7 is a sectional perspective view of a connection
element for the on-shore connector in FIG. 3;
[0036] FIG. 8 shows the on-shore connector of FIG. 4 and on-board
connector of FIG. 6 connected together;
[0037] FIG. 9 is a perspective view of another embodiment of a
on-shore connector adapted to float on the water, illustrated
suspended from a haulage chain;
[0038] FIG. 10 is a sectional view of the on-shore connector
illustrated in FIG. 9, shown when resting on the surface of the
water;
[0039] FIG. 11 is a similar view to the view in FIG. 10, the
connector being illustrated when suspended from the chain,
[0040] FIG. 12 is a perspective view of the storage and launching
means for the floating connector, in storage position and,
[0041] FIG. 13 is similar view to the view in FIG. 12 illustrating
the launching of the floating connector.
[0042] The connection device 1, illustrated in FIGS. 1 and 2,
comprises an on-board part 2 and an on-shore part 3. The on-shore
part 3 is designed so that it is arranged on a quayside 4. The
on-board part 2 is designed to equip a ship 6 whose side facing the
quayside 4 is shown in the sectional view illustrated in FIG. 1.
The ship 6 comprises an upper deck 7, an intermediate deck 8 and a
lower deck 9. The lower deck 9 forms an engine room 9.
[0043] First a general description is given of the on-board part 2
of the device 1.
[0044] The on-board part 2 of the device 1 comprises a jib 10,
fixed underneath the ceiling of the upper deck 7. It is provided so
that it extends transversally outside the hull 11 of the ship
through an opening 12 in the hull 11. Therefore the jib is designed
to be mobile between a retracted position inside the hull of the
ship and a deployed position, such as illustrated in FIGS. 1 and
2.
[0045] The jib comprises a substantially horizontal beam 14. A
distal end of the beam 14 carries a panel 13. The panel 13 is
designed to close the opening 12 when the jib is retracted inside
the hull 11, thereby ensuring the continuity and seal of the hull
Immediately behind the panel 13, the beam 14 carries a nacelle
15.
[0046] Three connection elements 16 (of which only two are shown in
FIG. 1) are arranged in the nacelle 15. Together the connection
elements take part in forming an on-board connector 17. Each
connection element 16 is connected to a respective electric cable
18 which extends towards inside the ship through the opening 12.
Beyond the opening 12, the cables enter the upper deck 7. A duct 20
is arranged between the floor of the upper deck 7 and the floor of
the intermediate deck 8 so that, beyond the upper deck 7, the
cables 18 pass through the duct as far as the engine room 9. Here,
the cables are hung from the ceiling of the engine room and supply
an electric switchboard (not illustrated) of the ship. The cables
18 form a loop 19 in the engine room. An upstream strand of the
loop 19 is suspended from pulley means 21 in the upper deck 7, and
a downstream strand of the loop is suspended from the ceiling of
the engine room 9. The loop 19 forms reserve cable for the jib 10
so that when the jib 10 is in deployed position the loop is of
reduced size 19A, and when the jib is retracted the loop is of
larger size 19B. These two arrangements 19A, 19B of the loop 19 are
illustrated together in FIG. 1. The loop is arranged so that it
hangs under gravity in the engine room alongside the hull 11.
[0047] The beam 14 comprises a rack 22 on which an electric motor
(not illustrated in the figures) comes to engage, the said motor
allowing the deployment and retracting of the jib 10.
[0048] The elements of the on-board part 2 of the connection device
1 take up little space in the ship, which means that there is
little or no reduction in payload. Accordingly the beam 14 is fixed
to the ceiling of the upper deck, and most of the volume taken up
by the device is taken up by the nacelle 15 and the elements
contained therein. Therefore, the cable travels through the upper
and intermediate decks without taking up any notable space and the
loop is arranged in the engine room 9 where it finds its own place
whilst avoiding the presence of cumbersome reels. Provision may be
made for the loop to be isolated in a specific compartment of the
engine room so that it does not form a hindrance or any risk, in
particular to ensure continuity of sealing with respect to water,
air or fire smoke between the upper deck 7 and the engine room
9.
[0049] A description is now given of the on-shore part 3 of the
device 1.
[0050] This on-shore part of the device comprises a container 25
resting on the quayside 4, and a chimney 26 which extends
vertically upwards from the roof 27 of the container 25. As more
particularly illustrated in FIG. 2, the roof 27 of the container 25
carries a pair of longitudinal rails 28. The chimney 26 is carried
by a trolley 29 able to move in horizontal translation along the
rails 28. The chimney 26 is designed so that it can house an
on-shore connector 30.
[0051] In FIGS. 1 and 2, the on-shore connector 30 is shown as it
is being moved vertically for connection thereof with the on-board
connector 17. The on-shore connector is drawn upwards in the
direction of arrow V hung from a shuttle 40 drawn by a haulage line
41. In the illustrated example, the haulage line is a chain 41. The
chain 41 is moved by a winch 42 arranged and fixed inside the
nacelle 15. The shuttle 40, the chain 41 and the winch 42 form part
of the on-board part 2 of the device 1. The shuttle 40 is of
elongate shape in the continuity of the chain 41 with a linear
cross-section forming an equilateral triangle (see FIG. 6).
[0052] The on-shore connector 30 comprises three connection
elements 32, not illustrated in FIGS. 1 and 2 but which can be seen
in FIG. 4, each mating with a connection element 16 of the on-board
connector 17. Each on-shore connection element 30 is connected to a
respective on-shore cable 33 extending upstream of the on-shore
connector through the chimney and a longitudinal opening 34 in the
roof 27, in the container 25, as far as an on-shore terminal. The
on-shore terminal is fixed relative to the quayside 4. It cannot be
seen in the figures since it is hidden by the container 25 covering
it. The container acts as reserve for the on-shore cable 33 so that
the cable can be deployed when the on-shore connector 32 is hauled
upwards up as far as the on-board connector 17, and when the
on-shore connector 32 is again stored away in the chimney 26 the
cable can be coiled therein.
[0053] Provision may be made for several terminals arranged further
and further along each quayside of a port. A container 25 according
to the invention, as per the needs of a ship intended to dock on
the quayside, can be brought to approximately the point where the
jib 10 will be positioned. Therefore the device according to the
invention allows the connectors to be positioned exactly along
three axes: first longitudinally by moving the on-shore connector
on the container 25, or moving the container relative to the fixed
terminal, second transversally by deploying the jib 10 to a greater
or lesser extent, and finally vertically by deploying the on-shore
cables 33 to a greater or lesser extent.
[0054] The chimney has an upper opening 37 which flares upwardly.
As illustrated in FIG. 2, the chimney 26 carries a shutter 36 in
the form of a diaphragm and arranged above its upper opening 37.
The shutter 36 comprises several shutter plates 38. In the
illustrated example the shutter comprises three shutter plates. The
role of the shutter 36 is to protect the on-shore connector 30
against bird excrements in particular, which may soil and damage
the connector. The shutter additionally has the role of centring
the shuttle 40 when it comes to engage with the on-shore connector
30 that has been arranged inside the chimney 26, and also the role
of centring the on-shore connector when it is returned back into
the chimney 26 after disconnection from the on-board connector.
[0055] When the shuttle 40 approaches the chimney to collect the
on-shore connector, the shutter 36 is open so that the shutter
plates 38 all form a wide opening such as illustrated in FIG. 2.
When the shuttle 40 lies between the plates 27 these are drawn
close around the shuttle 40 to allow precise positioning thereof
above the on-shore connector 30.
[0056] FIG. 3 gives a magnified view of the on-shore part 3 of the
device 1. The on-shore connector cannot be seen as it is stowed
away in the chimney. The shutter 36 can be seen in closed position,
so that it ensures the protection of the connector in the chimney.
This arrangement is the arrangement of the on-shore part awaiting a
ship due to berth and to set up an electrical connection.
[0057] A description is now given of the on-shore connector 30 in
particular with reference to FIG. 4.
[0058] As particularly illustrated in FIG. 4, the on-shore
connector comprises a capsule 45. The capsule comprises a cylinder
46 of revolution about an axis X30 arranged substantially
vertically, and a disc 47 perpendicular to the axis X30. The disc
47 shuts off the cylinder 46 inside its upper edge. The capsule 45
is open downwardly inside a horizontal lower edge of the cylinder
48. In
[0059] FIG. 4 a section of the cylinder is shown to illustrate
elements of the on-shore connector 30 arranged inside the capsule
45. The on-shore connector additionally comprises a structure 49,
49, 49 composed of three tubes 49 forming the edges of a regular
tetrahedron. Each tube is joined to the two others by a lower end,
in the vicinity of the axis X30. An upper end of each tube 49 is
fixed to the lower edge 48 of the cylinder 46.
[0060] When the on-shore connector 30 enters into the chimney 26,
the tubes 49 allow progressive centring of the connector 30, first
between the shutter plates 38 then via the upper opening 37 of the
chimney. Also, the structure 49, 49, 49 allows the on-shore cables
33 to be grouped together at the lower end of the tubes 49 so that
they extend upstream of the connector 30 substantially along the
axis X30 in the form of a composite cable of which each cable 33
forms a strand.
[0061] Inside the capsule, the on-shore connector comprises three
connection elements 32, guide means 51, a haulage tube 52 and
engaging means 53. The connection element 32 the furthest to the
right is shown partly cut away to show inner components. The
connection element 32 the furthest to the rear is almost entirely
hidden by the haulage tube 52. The haulage tube is shown in an
axial cut-away view to show the guide means 51.
[0062] The haulage tube 52 is substantially of revolution about the
axis X30. It comprises a cylinder 56 whose underside is fixed to
the disc 47. The haulage tube further comprises an annular plate 57
arranged at its lower end. The annular plate 57 is pierced with an
axial passageway 58 for a lower end 60 of the shuttle 40 (see in
particular FIG. 8 in which the shuttle is shown engaged with the
on-shore connector 30).
[0063] The engaging means 53 comprise two jaws 61 arranged facing
one another. Each jaw 61 is fixed to the annular plate 57 by a
respective clevis 62 on which the jaw is hinged about a horizontal
axis. Each jaw 61 extends downwardly from its respective clevis 62.
The jaws are designed to come to engage with the lower end 60 of
the shuttle 40. As particularly illustrated in FIG. 6, the end 60
of the shuttle 40 comprises a narrowing which mates with a
corresponding shape of the jaws. With regard to the detailed
arrangement of this type of mechanism, helpful reference can be
made to patent WO 83/01059 which describes an example thereof. The
accumulated height of the haulage tube 52 and the jaws is such that
the jaws, in the downward direction, do not extend beyond the lower
edge 48 of the capsule 45.
[0064] The guide means 51 comprise a cylindrical guide tube 66, of
axis X30. The guide tube 66 is arranged inside the haulage tube 52.
It is fixed, on the underside, to the disc 47. The guide tube is
open over its entire section both upwardly through the disc 47 and
downwardly. The guide tube 66 is therefore arranged so that the
shuttle 40 is able to pass through it until it comes to engage with
the jaws 61. The guide means also comprise three rollers 67. Each
roller is substantially of revolution about a longitudinal axis
X67. Each of the two longitudinal ends of each roller is mounted in
rotation in the wall of the haulage cylinder 56 about the
respective axis X67. Each axis X67 is tilted by about 45 degrees
relative to a plane perpendicular to the axis X30, and the rollers
67 are arranged so that the axis X567 of one can be derived from
the axis X67 of the other by a rotation through 120 degrees about
the axis X30. Each roller 67 passes through the inner volume of the
guide cylinder 66 through a respective opening 68 in the wall of
the guide cylinder 66. The rollers are therefore arranged so that
when seen from above i.e. along axis X30, the rollers 57 in the
inner space of the cylinder 66 together leave a free section
adjusted to the triangular section of the shuttle 40.
[0065] The connection elements 32 are each of elongate shape,
substantially cylindrical about a respective axis X32. They are
arranged parallel to the axis X30 of the on-shore connector 30,
between the cylinder 46 of the capsule 45, and the haulage cylinder
56. They are distributed about the axis X30 at 120 degrees from
each other.
[0066] A description is now given of a connection element with
particular reference to FIG. 5.
[0067] FIG. 5 shows an isolated connection element 32. FIG. 5
illustrates a waiting position in which the element 32 is not
connected. The element 32 comprises a jacket 70, a piston 71, an
electrically insulated push rod 72, a helical spring 73, two
contacts 74 and one junction 75. One of the contacts is connected
to a specific electric phase of the connection element and the
second contact is connected to the neutral of the electric
installation. The push rod 72 is fixed relative to the jacket
70.
[0068] The jacket is of substantially cylindrical shape. It is
closed at its lower end by a bottom end 77 and at its upper end it
comprises an annular rim which extends radially both towards the
axis X30, to form an inner shoulder, and also moving away from the
axis X30 to form an outer shoulder. A circular opening 80 is formed
by the inner edge 79 of the inner shoulder. As illustrated in FIG.
4, each element 32 is mounted through the disc 47 and the inner
shoulder of the rim 78 forms a support for fixing the jacket onto
the disc 47.
[0069] The push rod 72 extends coaxially to the jacket. A lower end
of the rod 72 is fixed to the bottom end 77. The rod 72 comprises
insulated conductors, one for phase and the other for neutral.
These conductors are not illustrated in the figures. The rod is
electrically connected to the junction 75 via the bottom end 77.
The junction extends downwardly from the bottom end 77; as
illustrated in FIG. 4, it is designed for the connecting of a cable
33 which itself comprises a conductor for phase and another for
neutral. An insulating ring 81 is provided in the bottom end 77 to
insulate the bottom end 77 electrically from the rod and from the
junction 75. The rod 72 extends from the bottom end 77 upwardly as
far as a free end of the rod located in the vicinity of the opening
80.
[0070] The two electric contacts 74 are each in the shape of ring
mounted on the rod 72 away from each other, and away from each of
the ends of the rod 72. It will be noted that the rings 74 are
sufficiently distanced away from each other and from each of the
ends of the connection element so that there is no possibility of
the formation of an electric arc when the connector is energized.
In particular, this distance is sufficient so that no arc is formed
when the piston 71 is moved. The free end comprises a cylindrical
disk 82. The contact rings each have the same outer radius. This
outer radius of the rings is substantially equal to the outer
radius of the disk 82.
[0071] The piston 71 is mounted slidingly inside the jacket 70. It
comprises a central cylindrical passage that is sufficiently wide
for the piston to be able to move along the rod 72 without being
hindered by the contact rings 74. The inner radius of the central
passage is therefore greater than that of the rings 74; it is also
smaller than that of the disk 82. The spring 73 is mounted loaded
between the bottom end 77 and the piston 71. Therefore, in the
waiting position illustrated in FIG. 5, the piston 71 under the
action of the spring 73 is held flat against the inner shoulder of
the rim 78 and against the disk 82. The piston 71 therefore forms a
cap intended to protect the inside of the jacket against the entry
of foreign bodies and humidity, and to insulate the electric
contacts 74 electrically from the outside.
[0072] A description is now given of the on-board connector 17 with
reference to FIG. 6.
[0073] FIG. 6 illustrates the nacelle 15 and the on-board connector
17. The on-board connector 17 is centred on a substantially
vertical axis X17. It notably comprises the three on-board
connection elements 16 and guide means 85 fixed to the nacelle 15.
It will particularly be noted in FIG. 6 that the shuttle 40 is
fixed to the chain 41 via a swivel 86 so that the shuttle 40 is
able to assume an orientation independently of the position of the
chain 41.
[0074] The guide means 85 are similar to the guide means 51 of the
on-shore connector 30. They will therefore not be described in more
detail.
[0075] The connection elements 16 of the on-board connector are
each of elongate shape, substantially cylindrical about a
respective axis X16. They are arranged parallel to the axis X17 of
the on-board connector 17 around guide means 85. They are
distributed at 120 degrees to each other about the axis X17. In
addition, the distance between the axes X16 and axis X17 is equal
to the distance between the axes X32 and axis X30.
[0076] A connection element 16 will now be described of the
on-board connector 17 illustrated on its own in FIG. 7. FIG. 7
illustrates a waiting position in which the element 16 is not
connected.
[0077] The connection element 16 comprises a substantially
cylindrical jacket 90 closed downwardly by an annular abutment 92
and closed in the top part by a bottom 97. It also comprises a
hollow piston 91 mounted slidingly in the jacket 90. A plugging rod
94 is fixed to the piston so that it extends axially downwards from
the piston 91 through the annular abutment 92.
[0078] A spring 93 is held compressed between the piston 91 and the
bottom 97. In the waiting positioning illustrated in FIG. 7, the
piston 91 is held flat downwardly against the annular abutment 92,
by the spring 93.
[0079] The connection element 16 further comprises a plunger tube
95. The plunger tube 95 is electrically non-conductive. It
comprises an annular plate 96. The connection element 16 is mounted
on a lower platform 98 of the nacelle 15 so that the platform is
caught between the annular abutment 92 above and the annular plate
96 underneath. The platform 98 is not illustrated in FIG. 7.
[0080] The plunger tube 95 at its lower end carries an annular plug
951. The annular plug 951 comprises a cylindrical axial passageway.
The plugging rod 94, at its lowest end, comprises a stopper 941
designed to close off the axial passageway of the plug 951 when the
element 16 is in waiting position. The diameter of the passageway
is substantially equal to the outer diameter of the disk 82 of the
connection element 32 of the on-shore connector.
[0081] A sleeve 99 is fixedly mounted inside the plunger tube 95 so
that it extends upwardly beyond the plate 96, inside the jacket 90.
The sleeve has an inner diameter which, in the continuity of the
passageway of the plug 951, is substantially equal to the outer
diameter of the disk 82 of element 32. This allows the sliding
therein of the push rod 72 of the connection element 32 of the
on-shore connector.
[0082] The sleeve carries two contacts 100, each designed to come
into contact respectively with a contact 74 associated therewith.
One of the contacts 100 is designed to ensure the continuity of a
phase and the other to ensure the continuity of the neutral.
[0083] The contacts 100 are connected via the bottom 97 to a cable
18 belonging to the connection element 16.
[0084] FIG. 8 illustrates the nacelle 15, the on-board connector 17
and the on-shore connector 30 connected together. The connecting
operation is now described which leads to the respective positions
of the connectors 17, 30 illustrated in FIG. 8.
[0085] When the ship is berthed it deploys the jib 10. The jib 10
and the chimney 26 are moved so that the on-board connector 17 lies
substantially directly above the chimney. The shuttle 40 is then
lowered in the direction of the chimney 26. The shuttle 40 is first
re-centred by the shutter 36 so that it correctly enters into the
guide means 51.
[0086] As and when the shuttle 40 enters into the guide means 51 of
the on-shore connector 30, its triangular section cooperates with
the rollers 57 so that it orients itself in a predefined position
relative to the on-shore connector 30 about the axis X30. This
position is defined to within 120 or 240 degrees. Once the shuttle
has engaged with the jaws 61, this relative orientation is
maintained.
[0087] The shuttle is then hauled upwards in direction V as
illustrated in FIGS. 1 and 2, substantially along the axis X17 of
the on-board connector 17. When the shuttle 40 reaches the on-board
connector it enters into the orienting means 85 and orients itself
progressively into a predefined position relative to the on-board
connector 17, about the axis X17. This position is defined to
within 120 or 240 degrees about the axis X17. The shuttle is of
sufficient length so that this relative position is reached before
the on-shore connector reaches the lower level of the on-board
connection elements 16. The guide means 51, 85 are designed so that
once the relative positions of the shuttle 40 have been fully
reached each connection element 32 of the on-shore connector 30
lies opposite a connection element 16 of the on-board connector 17.
In other words, for each element 16 its axis X16 is aligned with
the axis X32 of an element 32.
[0088] Additional hauling along V ensures the entry of each plunger
tube 95 of a connection element 16 inside the jacket 70 of the
connection element 32 lying opposite it, and the entry of each push
rod 72 inside the sleeve 99 of the corresponding connection element
16. On entering the jacket 70, the plunger tube 95 pushes the
piston 71 so as to free the contacts 74, and the push rod 72 pushes
the plugging rod 94 so as to free the contacts 100.
[0089] The hauling along V is continued until each rim 78 of the
on-shore connector comes into contact, underneath an annular plate
96, with a corresponding on-board connection element 16. The
connection elements 16, 32 are designed so that, in this position,
each contact 74 of the on-shore connector is in contact with a
respective contact 100 of the on-board connector, thereby ensuring
the electric continuity between each on-shore cable 33 and a
respective on-board cable 18.
[0090] Between the winch and the platform 98 of the nacelle 15, the
nacelle comprises a compartment 87 in which the chain is coiled, in
particular when the shuttle 40 is raised inside the nacelle.
[0091] It will be noted that since the on-board connector is
maintained substantially rigid relative to the ship, this provides
for very easy connecting.
[0092] It is ascertained that a device according to the invention
does not require any manual intervention for moving and connecting
the connectors together. Connection is able to be made in full
safety and without any effort. Said connection is particularly
rapid.
[0093] The end of the chain opposite the swivel 86 is left free.
Therefore, in the event of an emergency when the ship must rapidly
leave the quayside, all that is needed is to unwind the chain in
reverse direction to direction V until its free end is released
from the winch. Under these conditions, the on-board connector
returns back into the chimney without any damage and only the chain
and the shuttle are abandoned on the quayside. This can be
performed without any manual intervention, hence without risk and
within an extremely short time, therefore without hampering safety
operations.
[0094] A description will now be given of another embodiment for an
on-shore connector, with reference to FIGS. 9 to 13. This
embodiment will only be described in the manner in which it differs
from the previously described embodiment with reference to FIGS. 1
to 8. It will be noted in particular that an on-shore connector
130, obtained according to this other embodiment, is designed to be
compatible with the on-board connector described in particular with
reference to FIG. 6.
[0095] In this other embodiment, the on-shore connector 130 is
designed to float. This arrangement is of particular advantage for
container ships. It is effectively preferable for the jib 10 of one
of these ships 6 to be arranged at the stern of the ship 6 and for
the jib 10 to be designed so that it extends longitudinally from
the stern. On this account, the on-board connector 17 does not
generally lie above a quayside but above the water. The on-shore
connector is therefore designed so that it can be moved by floating
on the water until it comes substantially in line with the on-board
connector for the mutual connection thereof.
[0096] The connector 130 comprises a capsule 45 containing the same
elements as the capsule described previously with reference to the
first embodiment of the on-shore connector 30. It therefore
particularly comprises guide elements for the shuttle 40 and
connection elements 32.
[0097] The connector 130 also comprises a chimney 126 to house the
capsule 45 therein. Floating means 110 are fixed to the chimney
126. In the illustrated example the floating means comprise a
ring-shaped buoy 110. The buoy 110 is formed of two semi-annular
buoys that are identical and keyed onto each other.
[0098] Propelling means 111 with propellers are fixed to the
chimney 126. The propelling means 111 comprise two propeller
engines 111. Each engine is mounted mobile in rotation about a
vertical axis XIII particular to it. Each engine 111 is mobile
independently of the other.
[0099] The capsule 45 is mounted slidingly in the chimney 126
equipped with a shutter 36. The connector 130 comprises sliding
means sliding along axis X30 so that the capsule is slidingly
mounted in the chimney 126 between a bottom position and a top
position. The bottom position is a waiting position, illustrated in
FIG. 10. The top position is illustrated in FIG. 11.
[0100] In the illustrated example, the chimney 126 comprises an
upper annular shoulder 112, and a lower annular shoulder 113, both
extending radially towards the axis X30 of the connector 130, and
the capsule 45 comprises an annular rib 114 extending radially in
the direction of the chimney 126. The capsule 45 is mounted in the
chimney 126 so that the rib 114 is able to slide freely parallel to
the axis X30 between the two shoulders 112, 113.
[0101] In the bottom position, the rib 114 rests against the lower
shoulder 113. In this position, the shutter 36 can be closed and
the capsule remains protected inside the chimney waiting to be
engaged by a shuttle 40.
[0102] When the shuttle 40 engages with the engaging means 53, the
capsule 45 is first hauled upwards until the rib 114 reaches its
top position abutting the upper shoulder 112, whilst the chimney
and its floating means remain substantially immobile on the surface
of the water. Additional hauling of the shuttle then allows the
assembly to be driven upwards along V.
[0103] The connector is designed so that, in the top position, the
annular rims 78 of the on-shore connection elements 32 lie above
the other components of the on-shore connector 130, so that at the
time of connection with the on-board connector 16 these other
components and in particular the floating means 110 do not
mechanically interfere with the on-board part 2 of the system
1.
[0104] In the example illustrated in FIGS. 9 to 13, the connector
130 also comprises ballast provided so that it is possible, at
will, to sink the connector 130 or to leave it to float, for
example when the ship is manoeuvring on arrival or departure.
[0105] As illustrated in FIGS. 12 and 13, quay storage means 120
may be provided, allowing both the launching and dry docking of the
floating connector 130. In the illustrated example, these means 120
comprise a specific jib 121 motorized about a vertical axis X121,
and an electric cabinet 122. These means 120 further comprise a
specific shuttle 140 held on the jib by a cable 141 and provided so
that it engages with the connector when it is recovered for dry
docking, until the next re-launching. The jib 121 carries a cover
124 arranged so that it forms a shelter for the connector 130 when
it is hanging from the jib.
[0106] As particularly illustrated in FIG. 12, the connector 130 is
designed to be stored just above the quayside 4. When it is
launched as illustrated in FIG. 13, the jib 121 rotates about its
axis so that the connector 130 is brought above the water then the
cable is unwound until the connector floats and is released from
the shuttle 140. In this way, the connector 130 can be launched
close to the stern 123 of a ship 6.
[0107] A reverse operation allows the connector 130 to be dry
docked. Once dry docked above the quayside 4, the connector 130 is
protected by the cover 124 away from the fenders 125 arranged along
the quayside.
[0108] Evidently, the invention is not limited to the examples just
described.
[0109] For example, the chain can be replaced by a cable.
[0110] Although only one intermediate deck is illustrated, the ship
may comprise several such decks between the upper deck where the
jib is installed and the engine room.
[0111] In the illustrated example, three connection elements are
provided in each connector, each confection element comprising a
contact for the neutral and a contact for a specific phase. In
another embodiment, provision may be made for four connection
elements, one for each phase and the fourth for the neutral.
Provision may also be made for six connection elements, one for
each phase and each of the three others for a neutral respectively
derived from one of the supply cables. Said arrangements allow a
considerable reduction in the length of each connection element,
and hence in the space requirements for the on-shore and on-board
connectors.
[0112] The contacts mounted on the rods of the connection elements,
instead of being rings could be replaced by lamella contacts. Said
contacts are able to offset any play. Said lamella contacts are
marketed in particular by Multi-contact, Hesingue F-68220.
[0113] Instead of being positioned on the quayside, the container
can be positioned on a floating pontoon, preferably motorized, so
that it can easily come to position itself directly in line with
the on-board connector. A device according to the invention can be
adapted for other types of moving bodies, in particular for an
aircraft, train, tramway or motor vehicle when they are
stationary.
* * * * *