U.S. patent application number 15/505171 was filed with the patent office on 2017-09-28 for device having a load arm for installing and removing a component of a gas turbine.
This patent application is currently assigned to Siemens Aktiengesellschaft. The applicant listed for this patent is Siemens Aktiengesellschaft. Invention is credited to Christian Kowalzik, Dirk Muller.
Application Number | 20170276025 15/505171 |
Document ID | / |
Family ID | 51392187 |
Filed Date | 2017-09-28 |
United States Patent
Application |
20170276025 |
Kind Code |
A1 |
Kowalzik; Christian ; et
al. |
September 28, 2017 |
DEVICE HAVING A LOAD ARM FOR INSTALLING AND REMOVING A COMPONENT OF
A GAS TURBINE
Abstract
A device for installing and removing a component in a gas
turbine, includes a rail system for fastening to the gas turbine,
on which rail system at least one runner is provided, which can be
moved along a predetermined movement axis. A load arm is fastened
to the runner, which load arm is designed to be pivoted in at least
two spatial directions, and wherein the load arm has a fastening
segment, which is designed to form a detachable connection to the
component in question. The load arm has three joints each having a
defined pivot axis, of which pivot axes preferably at least two are
parallel to each other, wherein the joints each have a pivoting
resistance device, which pivoting resistance devices are designed
to set the pivoting resistance of the respective joints.
Inventors: |
Kowalzik; Christian;
(Berlin, DE) ; Muller; Dirk; (Mulheim a.d. Ruhr,
DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Siemens Aktiengesellschaft |
Munich |
|
DE |
|
|
Assignee: |
Siemens Aktiengesellschaft
Munich
DE
|
Family ID: |
51392187 |
Appl. No.: |
15/505171 |
Filed: |
August 24, 2015 |
PCT Filed: |
August 24, 2015 |
PCT NO: |
PCT/EP2015/069313 |
371 Date: |
February 20, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F01D 25/285 20130101;
F23R 2900/00019 20130101; F23R 3/60 20130101 |
International
Class: |
F01D 25/28 20060101
F01D025/28; F23R 3/60 20060101 F23R003/60 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 26, 2014 |
EP |
14182304.7 |
Claims
1.-10. (canceled)
11. A device for installing and removing a component of a gas
turbine, comprising a rail system for attaching to the gas turbine,
on which rail system there is provided at least one runner which
can be displaced along a predetermined displacement axis, wherein a
load arm is attached to the runner and is designed to be pivoted in
at least two spatial directions, and wherein the load arm has an
attachment section which is designed to establish a releasable
connection with the relevant component, wherein the load arm has
three articulations each having one defined pivot axis, of which
pivot axes all are mutually parallel, wherein the articulations
each have a pivot-resistance device which are designed to set the
pivot resistance of the respective articulation.
12. The device as claimed in claim 11, wherein the load arm has
articulations which allow the load arm to be pivoted in exactly two
spatial directions.
13. The device as claimed in claim 11, wherein one articulation is
attached to the runner and the pivot axis of the articulation runs
essentially perpendicular to the displacement axis.
14. The device as claimed in claim 11, wherein a first and a second
articulation are connected to one another with a first connecting
section, and the second and a third articulation are connected to
one another with a second connecting section, wherein the two
connecting sections provide different distances between the
respective articulations.
15. The device as claimed in claim 14, wherein the attachment
section is directly or indirectly fixed to the end of one of the
articulations and a connecting section which is also fixed to the
articulation in question is longer than the respective other
connecting section.
16. The device as claimed in claim 11, wherein the articulations
each have an immobilizing device which is designed to immobilize
the respective articulation.
17. The device as claimed in claim 11, wherein the attachment
section is directly or indirectly connected to one of the
articulations.
18. The device as claimed in claim 11, wherein the attachment
section is designed to be connected to the burner-side end of the
relevant component.
19. The device as claimed in claim 11, wherein the attachment
section has a lifting device.
20. The device as claimed in claim 19, wherein the lifting device
is designed to move at least one part of the attachment section
parallel to one of the pivot axes.
21. The device as claimed in claim 20, wherein the lifting device
is designed to move at least one part of the attachment section
parallel to the locally closest pivot axis.
22. The device as claimed in claim 13, wherein one articulation is
attached to the runner in a fixed position.
23. The device as claimed in claim 18, wherein the attachment
section is designed to be connected to the burner-side end of the
relevant component to a transition piece.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is the US National Stage of International
Application No. PCT/EP2015/069313 filed Aug. 24, 2015, and claims
the benefit thereof. The International Application claims the
benefit of European Application No. EP14182304 filed Aug. 26, 2014.
All of the applications are incorporated by reference herein in
their entirety.
FIELD OF INVENTION
[0002] The present invention relates to a device for installing and
removing a component of a gas turbine.
BACKGROUND OF INVENTION
[0003] Gas turbine maintenance occasionally also involves
maintenance and/or replacement of the components located in the
casing of the gas turbine. These components are for example parts
of the burner, or transition pieces, which serve for example as a
fluidic connection between the combustion chamber and the turbine
inlet (of the expansion turbine) of a gas turbine. Transition
pieces of this type are described for example in European patent
application EP 1 752 612 A1.
[0004] Installation and removal of such a component of a gas
turbine sometimes requires that the burner first be removed from
the casing of the gas turbine in order to expose a burner opening
which is defined by the burner mating flange on the casing of the
gas turbine. With the burner removed, the component which is for
example assigned to the respective burner is exposed after access
into the casing and can accordingly be removed. The weight of such
a component, for example of a transition piece, is typically
between 50 and 80 kg, and therefore this component cannot readily
be removed manually from the casing of a gas turbine. In some
countries, legal requirements also specify supported handling, such
that purely manual manipulation would not even be permissible. Such
requirements primarily serve to avoid the risk of accidents and
injury. Furthermore, the shapes of various components of a gas
turbine are generally unwieldy to the point that removal of the
components, for example from the relevant burner openings, cannot
be effected with a purely linear movement, but rather they have to
be moved by means of an appropriate tipping movement with a
three-dimensional carrying curve out of the casing. A tipping
movement of this type can, in this context, be composed of a number
of individual tipping movements to give an overall tipping
movement.
[0005] The prior art, which is known internally to the applicant,
typically uses for this purpose chain hoists or ropes with
simultaneous manual application of forces by the operating or
maintenance personnel, such that the described tipping movement can
be effected more or less manually.
[0006] This approach for removing a component has the drawback,
first of all, that it is not possible to work safely without the
risk of damage to the component and/or to the burner opening. The
considerable weight of the component means that even small lapses
in attention are sufficient to cause permanent damage, in
particular to the burner mating flange, by unintentional impacts.
In addition, such an impact can damage the component itself, which
would have significant effects on the flow conditions at or in the
component unless the latter is replaced.
[0007] Also disadvantageous is the fact that the approach known
from the prior art requires the involvement of at least two members
of the operating or maintenance personnel in order to execute the
described tipping movement with sufficient safety. This implies a
relatively high burden in terms of personnel simply in order to
remove a component from the casing of the gas turbine.
[0008] Another device from the prior art is described for example
in GB 2,306,155 A, which describes a gripping device which is
mounted in articulated fashion and is intended for installing and
removing burners of a gas turbine. The gripping device is moved
toward and away from the burners by means of a rail system such
that the burners can be handled in a targeted manner. The rail
system itself is moved on two encircling rails which surround the
circumference of the gas turbine.
[0009] Another device from the prior art is known from EP 2 070 663
A1, which describes an installation arrangement that is anchored to
the floor and is intended for installing a burner or other
hot-gas-conveying parts. The installation arrangement has at least
one grasping beam which can be moved perpendicular to the floor
along a column lift.
[0010] These devices known from the prior art have the drawback
that their use is very specifically as a maintenance tool since on
one hand their space requirement is very high. In this context, the
device of GB 2,306,155 A requires for example the installation of
encircling rails which surround the entire circumference of the gas
turbine. The device of EP 2 070 663 A1 even requires a floor anchor
which is normally quite unsuitable for space-saving and mobile
maintenance tools. In this context, it must for example also be
considered that the space ratios in the region of the burner
opening are sometimes insufficient to permit simple installation or
removal in the context of maintenance of the components. Due to the
arrangement of a great many lines, pipes or cables in the region of
the casing, it is namely possible for space to be very restricted,
which markedly restricts the space in which the operating or
maintenance personnel can move. It is thus for example possible
according to the prior art that lines or pipes and cables must be
removed before safe installation and removal of the components
themselves can be made possible.
[0011] What is more, the devices known from the prior art are very
complex and difficult to operate and furthermore require a lot of
effort to set up, which is to be avoided especially in the context
of maintenance work.
[0012] In addition, the devices known from the prior art require
motorized support during handling for installing or removing a
burner or other hot-gas-conveying parts. However, the provision of
such a motorized support is not only cost-intensive but also
onerous in terms of provision and handling. In addition, careless
operation of such a device can even increase the risk potential for
maintenance personnel, for example if operation is not carried out
sufficiently carefully and competently.
[0013] Also, the solutions known from the prior art are relatively
inflexible since they only permit movement within a relatively
small spatial angle and thus restrict handleability.
SUMMARY OF INVENTION
[0014] From these drawbacks known from the prior art, there emerges
a technical need to propose a suitable device which can obviate
these drawbacks during installation and removal of a component of a
gas turbine, especially during maintenance work. In particular, the
device should be designed to use a working space that is as small
as possible, such that the installation and removal of burners or
other hot-gas-conveying parts can take place even on gas turbines
whose burner openings might be relatively inaccessible owing to
lines, cables and pipes. At the same time, however, the device
should permit flexible handling within a relatively large spatial
angle. Furthermore, the safety with which a component can be
installed and removed should be increased, in order to thus be able
to avoid damage to the casing and to the component itself.
Furthermore, the operating maintenance personnel should be able to
handle the devices in a safe and controlled manner, wherein the
freedom of movement of the device should support the necessary
movements during installation or removal. In other words, the
intention is to allow force-saving handling if the device is
operated manually.
[0015] These objects upon which the invention is based are achieved
with a device as claimed.
[0016] In particular, the objects upon which the invention is based
are achieved with a device for installing and removing a component
of a gas turbine, comprising a rail system preferably for attaching
to the gas turbine, on which rail system there is provided at least
one runner which can be displaced along a predetermined
displacement axis, wherein a load arm is attached to the runner and
is designed to be pivoted in at least two spatial directions, and
wherein the load arm has an attachment section which is designed to
establish a releasable connection with the relevant component, and
wherein the load arm has three articulations each having one
defined pivot axis, of which pivot axes all three are mutually
parallel, wherein the articulations each have a pivot-resistance
device which are designed to set the pivot resistance of the
respective articulation.
[0017] The concept of the invention is therefore based on providing
a rail system, preferably attaching such a system to the gas
turbine and in particular to the casing of the gas turbine, on
which system a load arm is mounted. The load arm itself is attached
to a runner for the rail system and can be displaced along a
displacement axis defined by the rail system. This displacement
axis runs, for example, typically perpendicular to the surface
defined by the burner mating flange on the casing of the gas
turbine. In that regard, a component held by the load arm can
already be displaced along one spatial direction.
[0018] However, this linear movement along the displacement axis is
not sufficient to carry out the tipping movement necessary for
installation and removal of a component. In that regard, the
invention also provides that the load arm can be pivoted in at
least two spatial directions such that it is possible to carry out
an appropriate pivoting movement for installing and removing the
component, possibly also while moving along the displacement axis,
as long as the component is secured to the load arm.
[0019] Pivoting in two spatial directions is in this context in
particular pivoting in one spatial plane and is defined by two
spatial directions which are typically arranged perpendicular to
one another. In that regard, pivoting of a load arm always takes
place in at least two spatial directions. One of the two spatial
directions can in this case be identical with the spatial direction
predefined by the displacement axis, such that the component can in
fact be pivoted only in a single plane.
[0020] A preferred attachment of the rail system to the gas turbine
must of course be sufficiently stable during replacement or
installation, such that accordingly the component can move only
along the displacement axis or in the spatial directions available
to the load arm. If the rail system is not attached to the gas
turbine, other provisions must be made in order to permit
sufficiently safe and stable load support.
[0021] In order that the component can be moved essentially freely
using the load arm, it is particularly preferred for the attachment
section to be fixed to the end of the load arm. This means that,
during pivoting of the load arm, the extent of the load arm itself
scarcely encroaches upon the component.
[0022] The releasable connection between the component and the
attachment section serves in this context for the only temporary
attachment of the component to the load arm until for example the
component has been introduced or removed through the corresponding
burner opening in the casing of the gas turbine. After appropriate
introduction, for example, this connection can again be dissolved
in order for the load arm to be once again available for a new
installation or removal of another component. In that regard, the
releasable nature of the connection is an essential requirement of
the invention.
[0023] Now, if a component is fixed to the attachment section of
the device for installation and removal, it is possible, by virtue
of the degrees of freedom of movement provided by the rail system
and the load arm, to execute a non-linear tipping movement which is
required in order to install the component in the casing of the gas
turbine, or to remove this component from the casing. If the rail
system is attached to the gas turbine, the device requires the use
of neither chains nor a hoist, and hence the possibly restricted
space in the region of the burner opening is much less restricted
for maintenance of the gas turbine during installation and removal
of the component. Accordingly, the weight of the component can for
example be fully supported by the device in order that the weight
forces can be introduced in their entirety into the gas turbine, in
particular into the casing of the gas turbine.
[0024] Furthermore, the load arm itself is designed such that it is
simple for the maintenance personnel to operate. However, due to
the freedom of movement of the component on the load arm being
restricted, only a predefined movement space is available, which
can additionally prevent the component unintentionally colliding
with the casing of the gas turbine during installation and
removal.
[0025] By virtue of the component load being supported by the rail
system, and by virtue of the restricted freedom of movement on the
rail system while at the same time providing for a possible pivot
movement by means of the load arm, it is thus possible for a
component to be safely and efficiently installed in and removed
from the gas turbine.
[0026] It is further provided according to the invention that the
load arm has three articulations each having one defined pivot
axis, of which pivot axes all three are mutually parallel. The
relevant articulations thus permit targeted guiding of the
component on the load arm, wherein the guiding forces during
pivoting of the individual articulations permit mechanical support
for the weight of the component. By virtue of the provision of
three articulations, it is possible to perform a space-saving
pivoting movement of the component with simultaneous linear
introduction movement of the component for example into the burner
opening of the casing, and thus achieve efficient installation in
and removal from the casing of the gas turbine.
[0027] It is provided, according to the concept of the invention,
that the load arm has three articulations each having one defined
pivot axis, of which pivot axes all are mutually parallel. Thus,
the pivot axes again allow the component attached to the load arm
to pivot only in one pivot plane, wherein the three articulations
permit particularly flexible handling of the component during
installation and removal.
[0028] It is also provided according to the invention that the
articulations each have a pivot-resistance device which are
designed to set the pivot resistance of the respective
articulation. The pivot-resistance devices are in particular
designed as clamping devices which comprise a bushing and a shaft
running therein, wherein the frictional resistance during rotation
of the shaft in the bushing can for example be adjusted by means of
a set screw which interacts with a friction plate or friction pad
that is pressed against the shaft with a predetermined contact
pressure. The pivot-resistance device thus protects the maintenance
personnel operating the load arm from any unintentional pivot
movements of the component that is attached to the load arm, which
may come about due to the weight of the component and in spite of
the care taken by the maintenance personnel. Owing to the
pivot-resistance device, part of the weight force of the component
can be transferred in a targeted manner to the articulations so as
to be able to avoid free, practically frictionless movement of the
component. For one thing, this enhances the control of the movement
of the component and also the application of the force which is
required to effect the tipping movement of the component on the
load arm. In particular, it is namely possible to that end to
temporarily adjust the individual pivot-resistance devices on the
articulations such that those articulations which at a given time
are not needed for carrying out a pivot movement can for example be
subjected to a very high pivot resistance.
[0029] According to a first embodiment of the invention, it is
provided that the load arm has articulations which allow the load
arm to be pivoted in exactly two spatial directions. As already
stated above, these two spatial directions are perpendicular to one
another and define a pivot plane. Pivoting in another, third
spatial direction, which is perpendicular to this pivot plane, is
therefore impossible. This limiting of the freedom of movement of
the load arm also results in a lower risk, during installation or
removal of the component, of the operating and maintenance
personnel moving the component incorrectly or possibly injuring
themselves. Rather, the restricted possibility for movement
provides a safe available spatial region via which the component
can be introduced into or removed from the gas turbine. At the same
time, no force is required on the part of the maintenance
personnel, for example in order to move the component in another,
third spatial direction. As already indicated above, one of the two
spatial directions according to the embodiment can be identical to
the spatial direction defined by the displacement axis.
[0030] According to one refinement of the preceding embodiment, it
is provided that one articulation is attached to the runner, in
particular in a fixed position, and the pivot axis of the
articulation runs essentially perpendicular to the displacement
axis which is defined by the rail system. Therefore, the load of
the component attached to the load arm can efficiently be
transferred via the runner into the rail system, it being possible,
by combining the linear movement along the displacement axis with
the pivot movement about the relevant articulation, to carry out a
very space-saving tipping movement of the component.
[0031] According to another particularly advantageous embodiment of
the invention, it is provided that a first and a second
articulation are connected to one another with a first connecting
section, and the second and third articulations are connected to
one another with a second connecting section, wherein the two
connecting sections provide different distances between the
respective articulations. In other words, the connection sections
have different extents, typically perpendicular to the course of
the pivot axes, such that two mutually connected articulations are
at a first distance from one another, and the two other
articulations are at a second, different distance from one another.
This makes it possible to combine two pivoting or tipping
movements, which permits particularly flexible handling of the
component that is to be installed or removed. Due to the different
lengths of the two connection sections, the movement angle when
carrying out the tipping movement can be set flexibly with regard
to the available opening in the casing of the gas turbine.
[0032] According to one refinement of this concept, it can be
provided that the attachment section is directly or indirectly
fixed to the end of one of the articulations and a connecting
section which is also fixed to the articulation in question is
longer than the respective other connecting section.
[0033] According to another, also preferred embodiment of the
device according to the invention, it is provided that the
articulations each have an immobilizing device which is designed to
immobilize the respective articulation. In particular, the
immobilizing device can be identical to the pivot-resistance
device, i.e. the pivot resistance can be set with the aid of the
pivot-resistance device so as to prevent a pivoting movement. On
the other hand, however, it is also possible to provide the
immobilizing device independently of the pivot-resistance device.
Thus, the immobilizing device permits only two setting states,
namely a loose state and a secured state. In turn, the immobilizing
devices markedly increase the flexibility during handling of the
component on the load arm.
[0034] According to another particularly preferred embodiment of
the invention, it is provided that the attachment section is
directly or indirectly connected to one of the articulations. In
particular, the connection is configured such that the attachment
section is arranged on the end of the pivot arm. In this context,
and as already explained above, the arrangement at the end permits
handling of the load arm without the component coming into
undesired contact with the other components of the load arm.
Directly or indirectly connecting the attachment section to an
articulation further increases the flexibility of handling of the
component during installation and removal.
[0035] Furthermore, it is provided according to another concept
that the attachment section is designed to be connected to the
burner-side end of the component, in particular to a transition
piece. Consequently, the entire component can be inserted for
example into the burner opening without it having to be removed
from the load arm in the meantime. The removal can for example take
place once the component is fully inserted and also appropriately
attached in the gas turbine. Since the burner-side end of the
component is arranged closest to the burner, it is necessary,
according to the embodiment, merely to introduce a small portion of
the load arm into the burner opening in order to mount the
component. Again, this is also space-saving and advantageous.
[0036] According to another particularly preferred embodiment of
the invention, it is provided that the attachment section has a
lifting device which is preferably designed to move at least one
part of the attachment section parallel to one of the pivot axes,
in particular parallel to the locally closest pivot axis. This
makes it possible, in particular, to perform fine adjustment of the
component, for example once the latter has already been inserted
into the burner opening but it then proves necessary to perform a
suitable height adjustment. Such a lifting device thus permits
particularly flexible handling. The lifting device is in particular
designed as a linear transmission driven with a crank. If the load
arm can be pivoted only in two spatial directions, such a lifting
device is in particular designed to move the component
perpendicular to the pivot plane.
[0037] In the following, the invention is explained in detail with
reference to individual figures. In this context, it is to be noted
that the figures are to be understood as merely schematic, and this
represents no restriction of the enablement of the invention.
[0038] It is also to be noted that, in the figures, those technical
features provided with identical reference signs are intended to
have an identical technical effect.
[0039] Furthermore, the intention is to claim any combination of
the technical features described below, insofar as this combination
can provide a solution to the problems upon which the invention is
based.
BRIEF DESCRIPTION OF THE DRAWINGS
[0040] In the figures:
[0041] FIG. 1 is a side view in perspective of a first embodiment
of the device according to the invention for installing and
removing a component, to which is attached a corresponding
component;
[0042] FIG. 2 is an isolated perspective representation of the load
arm of the embodiment, shown in FIG. 1, of the device for
installing and removing a component;
[0043] FIG. 3 is a plan view of the device, shown in FIG. 1, for
installing and removing a component, with a component attached
thereto;
[0044] FIG. 4 is a perspective rear view of an embodiment of the
load arm according to the invention, as represented for example in
FIG. 2;
[0045] FIG. 5 shows a further embodiment of the device, according
to the invention, for installing and removing a component, with a
component attached thereto, during execution of a tipping movement
for installing or removing such a component relative to a burner
opening of the casing of a gas turbine.
DETAILED DESCRIPTION OF INVENTION
[0046] FIG. 1 shows a first embodiment of the device 1 according to
the invention for installing and removing a component 11 in a gas
turbine 10 (not shown here). In this context, the device 1
comprises a rail system 20 which has two mutually parallel rails 21
on which there is movably arranged a runner 22 that can move along
a displacement axis VA. The rail system 20 is designed to be
attached to a gas turbine 10, in particular to the casing 5 of a
gas turbine 10, in the region of the burner opening 13 (not shown
here).
[0047] A load arm 30 is attached to the runner 22 and has a total
of three articulations 31, 32 and 33 which in each case permit
pivoting about a respectively defined pivot axis SA (not shown
here). The three articulations 31, 32, 33 are in each case
connected to one another via a first connection section 41 or via a
second connection section 42, and thus permit a combined pivot
movement of the individual articulations 31, 32, 33.
[0048] At the end of the load arm 30 there is provided an
attachment section 40 which is designed to establish a releasable
connection with a component 11 that is in the form of a transition
piece. In this context, the component 11 is temporarily connected
to the attachment section 40 at the burner-side end such that,
during installation and removal, the weight of the component 11 can
be borne by the rail system 20 via the attachment section 40 and
the articulations 31, 32, 33.
[0049] In the present case, the articulations 31, 32, 33 are
designed such that the individual pivot axes SA are all mutually
parallel. This permits pivoting of the component 11 on the load arm
30 in only two spatial directions, or in a defined pivot plane (not
explicitly shown here), relative to which the respective pivot axes
SA are normal.
[0050] In order to be able to appropriately set the pivot
resistances of the individual articulations, each articulation 31,
32, 33 has its own pivot-resistance device 34, 35, 36 such that a
corresponding pivot resistance can be made to counteract pivoting
about the relevant pivot axis SA. In the present case, the
pivot-resistance devices 34, 35, 36 are identical to an
immobilizing device 37, 38, 39 which permits complete
immobilization of the individual articulations 31, 32, 33.
Immobilization makes pivoting of the respective articulations 31,
32, 33 no longer possible.
[0051] Now, if a component 11 is installed in or removed from a gas
turbine, it is necessary to first secure the component 11 to the
attachment section 40. By virtue of a combined movement along the
displacement axis VA, imparted by the runner 22 running on the
rails 21, and by the pivot movements about the three pivot axes SA
of the articulations 31, 32, 33, the operating and maintenance
personnel, suitably coordinated, can guide the component into or
out of the burner opening of the casing. In order to support the
individual movement sequences, the individual pivot-resistance
devices 34, 35 and 36, or the immobilizing devices 37, 38, 39 can
be set temporarily, and hence the number of degrees of freedom of
movement can be temporarily reduced. During operation, this can
save effort for the operating personnel, or can make it possible to
better control the precision of the individual movement
procedures.
[0052] The attachment section 40 also comprises a lifting device 45
which is designed as a linear transmission driven by a crank. The
associated lifting movement, which can be brought about using the
lifting device 45, runs parallel to the individual pivot axes SA
and thus permits fine adjustment of the component during
installation in the gas turbine, or alignment of the attachment
section 40 relative to the burner-side end of the component 11
during removal.
[0053] FIG. 2 shows a perspective view of the embodiment, shown in
FIG. 1, of the load arm 30, but with both the rail system 20 and
the component 11 being omitted. The pivot axes of the three
articulations 31, 32, 33, which are all parallel to one another,
are now clearly visible. Also, these pivot axes SA run
perpendicular to the displacement axis VA defined by the rail
system 20.
[0054] FIG. 3 is a plan view of the embodiment, shown in FIG. 1, of
the device 1 according to the invention, wherein in this case the
different lengths of the connection sections 41 and 42 are clearly
visible. The different lengths provide improved flexibility when
carrying out the tipping procedure for guiding the component into
or out of the gas turbine.
[0055] FIG. 4 is a perspective rear view of the load arm 30, as
shown for example in FIG. 2.
[0056] FIG. 5 is a perspective view of a further embodiment of the
device 1 according to the invention, which is illustrated during
execution of the tipping movement necessary for installation or
removal. In this case, the device 1 is attached to the casing 5 of
a gas turbine 10 by means of suitable attachment bolts in the
region of the burner mating flange 12. In this context, the burner
mating flange 12 normally serves for attachment of the burner
flange (not shown here) in order to attach the burner to the casing
5. The burner mating flange 12 also defines a burner opening 13
through which the component must be guided into or out of the gas
turbine. Due to the shape of the component, the component 11 can be
guided into the casing 5 of the gas turbine 10, in order that it
can then be attached at its intended location, only by means of a
suitable tipping movement. This tipping movement can be carried out
by combining a linear movement along the displacement axis VA
defined by the rail system 20 and a pivot movement about the pivot
axes SA of the articulations 31, 32 and 33.
[0057] Further embodiments are to be found in the subclaims.
* * * * *