U.S. patent application number 11/535674 was filed with the patent office on 2008-03-27 for oil feed assembly.
This patent application is currently assigned to PRATT & WHITNEY CANADA CORP.. Invention is credited to David DENIS, Andreas ELEFTHERIOU, Jean FOURNIER, Julien GARON, Denis LECLAIR.
Application Number | 20080073154 11/535674 |
Document ID | / |
Family ID | 39247042 |
Filed Date | 2008-03-27 |
United States Patent
Application |
20080073154 |
Kind Code |
A1 |
ELEFTHERIOU; Andreas ; et
al. |
March 27, 2008 |
OIL FEED ASSEMBLY
Abstract
An oil feed assembly suitable for use in a gas turbine engine
having a bearing housing, an outer ring surrounding the bearing
housing and a monocase extending therebetween. The assembly
provides an oil supply tube for extension within the monocase and
between the outer ring and the bearing housing. An oil nozzle
support means is employed for selective releasable engagement with
one end of the oil supply tube. This is also supported by an oil
supply tube support means for selective releasable engagement with
a second end of the oil supply tube. A coupling means for coupling
said oil supply tube support means and the outer ring completes the
assembly.
Inventors: |
ELEFTHERIOU; Andreas;
(Woodbridge, CA) ; DENIS; David; (Burlington,
CA) ; LECLAIR; Denis; (St-Nicephore, CA) ;
GARON; Julien; (Longueuil, CA) ; FOURNIER; Jean;
(Longueuil, CA) |
Correspondence
Address: |
OGILVY RENAULT LLP (PWC)
1981 MCGILL COLLEGE AVENUE, SUITE 1600
MONTREAL
QC
H3A 2Y3
US
|
Assignee: |
PRATT & WHITNEY CANADA
CORP.
Longueuil
CA
|
Family ID: |
39247042 |
Appl. No.: |
11/535674 |
Filed: |
September 27, 2006 |
Current U.S.
Class: |
184/105.1 |
Current CPC
Class: |
F05D 2230/80 20130101;
F01D 25/18 20130101; F05D 2260/30 20130101 |
Class at
Publication: |
184/105.1 |
International
Class: |
F01M 11/04 20060101
F01M011/04 |
Claims
1. An oil feed assembly for use in a gas turbine engine having a
bearing housing, an outer ring surrounding said bearing housing and
a monocase extending therebetween, comprising: an oil supply tube
for extension within said monocase and between said outer ring and
said bearing housing; an oil nozzle support means for selective
releasable engagement with one end of said oil supply tube; oil
supply tube support means for selective releasable engagement with
a second end of said oil supply tube; and coupling means for
coupling said oil supply tube support means and said outer
ring.
2. The oil feed assembly as defined in claim 1, wherein said oil
supply tube is a unitary and continuous member from said oil nozzle
support means to said oil supply tube support means.
3. An oil feed assembly in a gas turbine engine having a bearing
housing, an outer ring surrounding said bearing housing and a
monocase extending therebetween, comprising: an oil supply tube
extending within said monocase and between said outer ring and said
bearing housing; an oil nozzle support means selective releasable
engagement with one end of said oil supply tube; oil supply tube
support means selective releasable engagement with a second end of
said oil supply tube; and coupling means for coupling said oil
supply tube support means and said outer ring.
4. The oil feed assembly as defined in claim 3, wherein said
coupling means is fixedly secured to said outer ring.
5. The oil feed assembly as defined in claim 4, wherein said
coupling means is welded to said outer ring.
6. The oil feed assembly as defined in claim 1, wherein said oil
nozzle support means is welded to said bearing housing.
7. The oil feed assembly as defined in claim 6, wherein said oil
nozzle support means includes a mounting post for connection within
said bearing housing.
8. A method of mounting an oil feed assembly within a gas turbine
engine having a bearing housing, an outer ring surrounding said
bearing housing and a monocase extending therebetween, comprising:
providing an oil feed assembly including an oil supply tube, an oil
nozzle support means, oil supply tube support means and coupling
means; releasably mounting said oil supply tube support means
within said bearing housing; forming an access point within said
outer ring to allow passage of said oil supply tube at least
partially there through; releasably mounting said oil supply tube
support means and said oil supply tube within said access point;
and releasably mounting said coupling means to the mounted oil
supply tube at said housing.
9. The method as defined in claim 8, wherein releasably mounted
means are welded.
10. The method as defined in claim 8, wherein releasably mounted
means are welded.
11. The method as defined in claim 8, wherein said assembly is
removable.
12. The method as defined in claim 8, wherein forming an access
point within said outer ring comprises machining an aperture within
said outer ring.
13. The method as defined in claim 8, wherein releasably mounting
said oil supply tube support means within said bearing housing
comprises machining a post within said bearing housing and
welding.
14. The method as defined in claim 8, further including the step of
cycling oil through said assembly.
Description
TECHNICAL FIELD
[0001] The invention relates generally to an oil feed assembly and,
more particularly, to an improved oil feed assembly for use in a
gas turbine engine which has a reduced number of potential leak
areas and which is expeditiously removed for repair and/or
replacement.
BACKGROUND OF THE ART
[0002] Typically, in order to provide oil transport in gas turbine
engines, an oil transfer tube is employed. In the art it is known
that these arrangements are typically multi-component arrangements
and accordingly there is a high proclivity for leakage of the oil
being transported. This has possible deleterious effects on the
other components of the engine compartment and can lead to unwanted
build-up of oil on certain components.
[0003] As a further complication of existing arrangements, the tube
itself may include multiple components and is often positioned
within the bearing housing and related components in a position
which does not facilitate simple removal or repair.
[0004] Accordingly, there is a need to provide an improved oil feed
assembly which mitigates the existing limitations in the art.
SUMMARY OF THE INVENTION
[0005] It is therefore an object of this invention to provide an
improved oil assembly suitable for use in a gas turbine engine.
[0006] In one aspect, the present invention provides an oil feed
assembly for use in a gas turbine engine having a bearing housing,
an outer ring surrounding the bearing housing and a monocase
extending therebetween, comprising: an oil supply tube for
extension within the monocase and between the outer ring and the
bearing housing; an oil nozzle support means for selective
releasable engagement with one end of the oil supply tube; oil
supply tube support means for selective releasable engagement with
a second end of the oil supply tube; and coupling means for
coupling the oil supply tube support means and the outer ring.
[0007] In another aspect, the present invention provides an oil
feed assembly in a gas turbine engine having a bearing housing, an
outer ring surrounding the bearing housing and a monocase extending
therebetween, comprising: an oil supply tube extending within the
monocase and between the outer ring and the bearing housing; an oil
nozzle support means selective releasable engagement with one end
of the oil supply tube: oil supply tube support means selective
releasable engagement with a second end of the oil supply tube; and
coupling means for coupling the oil supply tube support means and
the outer ring.
[0008] In another aspect, the present invention provides a method
of mounting an oil feed assembly within a gas turbine engine having
a bearing housing, an outer ring surrounding the bearing housing
and a monocase extending therebetween, comprising: providing an oil
fee assembly including an oil supply tube, an oil nozzle support
means, oil supply tube support means and coupling means; releasably
mounting the oil supply tube support means within the bearing
housing; forming an access point within the outer ring to allow
passage of the oil supply tube at least partially there through;
releasably mounting the oil supply tube support means and the oil
supply tube within the access point; and releasably mounting the
coupling means to the mounted oil supply tube at the housing.
[0009] Further details of these and other aspects of the present
invention will be apparent from the detailed description and
figures included below.
DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 illustrates a partially cut away view of the oil feed
assembly as positioned in situ within the bearing housing and outer
ring.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0011] FIG. 1 illustrates a partially cut away view of the oil feed
assembly as positioned within its environment, namely the bearing
housing and outer ring of a gas turbine engine.
[0012] The overall oil assembly is denoted by numeral 10. Numeral
12 is representative of the outer housing of the gas turbine
engine, whereas numeral 14 is globally representative of the
bearing housing. A monocase 16 extends between outer ring 12 and
bearing housing 14. These components are well known in the art and
a further description is deemed unnecessary.
[0013] In the arrangement, an oil supply tube 18 which is
continuous and uninterrupted with respect to fluid flow, extends
between ring 12 and bearing housing 14. The oil supply tube 18 is
disposed within the bearing housing 14 via the monocase 16 to a
point extraneous and exterior of ring housing 12, the point being
generally denoted by numeral 20. Oil supply tube 18 is releasably
fixedly secured to an oil support member 24. Oil support number 24
is releasably and fixedly secured within the interior of housing 14
via a post or connection number 26. An opposed end 28 of oil supply
tube 18 is connected to an oil supply tube support 30. The tube and
28 may be releasably fixedly secured to support 30 by welding. A
tube coupling member 32 is subsequently connected to support 30 to
provide coupling with an oil supply line (not shown).
[0014] By providing the arrangement set forth in the example, the
result is essentially a tube point connection system for the oil
supply tube from the point of coupling to the point of the oil
nozzle support. This has significant advantage in terms of
preventing other possible areas for leakage and further provides
for an expedited and straight forward removal for repair or
replacement of the entire assembly or sections therefore. In terms
of retro-fit or installation procedures, the indication herein
where members are fixedly secured can be achieved by welding. In
order to modify the bearing casing 14, it will be understood that
the post or connection site 18 can simply be effected by drilling a
cavity within bearing housing 14 to accommodate a post 26. In order
to mount the support 34 to the ring housing 12 may be provided with
an access area simply by machining or drilling into the ring casing
12 with subsequent welding at suitable locations to effect
securement.
[0015] The above description is meant to be exemplary only, and one
skilled in the art will recognize that changes may be made to the
embodiments described without department from the scope of the
invention disclosed. Still other modifications which fall within
the scope of the present invention will be apparent to those
skilled in the art, in light of a review of this disclosure, and
such modifications are intended to fall within the appended
claims.
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