GB2416376A - A conduit arrangement incorporating a slidable cover - Google Patents

A conduit arrangement incorporating a slidable cover Download PDF

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Publication number
GB2416376A
GB2416376A GB0416271A GB0416271A GB2416376A GB 2416376 A GB2416376 A GB 2416376A GB 0416271 A GB0416271 A GB 0416271A GB 0416271 A GB0416271 A GB 0416271A GB 2416376 A GB2416376 A GB 2416376A
Authority
GB
United Kingdom
Prior art keywords
conduit
movable cover
arrangement
conduit arrangement
attachment portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0416271A
Other versions
GB0416271D0 (en
Inventor
Ian Michael Bradshaw
Aileen Kehoe
Mark Ashley Halliwell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Priority to GB0416271A priority Critical patent/GB2416376A/en
Publication of GB0416271D0 publication Critical patent/GB0416271D0/en
Publication of GB2416376A publication Critical patent/GB2416376A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
    • F16L33/225—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts a sleeve being movable axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
    • F16L59/187—Arrangements for connecting hoses to one another, to flexible sleeves or to rigid members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

A conduit arrangement 10 comprises a conduit 11 having a main portion 14 and a component attachment portion 16. A movable cover 26 is arranged on the component attachment portion. The movable cover 26 is movable from a covering position in which the component attachment portion 16 is covered and a non-covering position in which the component attachment portion is uncovered to allow access thereto. The cover 26 maybe secured in its covered position by bolts 28 which extend through threaded bores 27 in the cover 26 and engage in threaded blind holes 29 in the conduit 11. The arrangement is preferably used in a gas turbine engine.

Description

24 1 6376 A Conduit Arrangement This invention relates to conduit
arrangements. More particularly, but not exclusively, the invention relates to conduit arrangements through which oil can be delivered to engine components.
In gas turbine engines, it is necessary to deliver oil to various hot engine components. 'l'he heat from the components can give rise to coking in the oil pipes which, in turn, can lead to pipe blockages. This problem is generally tackled by the provision of suitable pipe insulation, but in regions around the pipe connectors, insulation causes problems relating to inspection and re- According to one aspect of this invention, there is provided a conduit arrangement comprising a conduit having a main portion and a component attachment portion for attaching the conduit to a component, and the arrangement further comprises a movable cover arranged on the component attachment portion, the movable cover being movable from a covering position in which the component attachment portion is covered and a non- covering position in which the component attachment portion is uncovered Lo allow access thereto.
Preferably, the movable cover comprises a slidable cover. The movable cover may comprise a sleeve. The movable cover may be provided around the conduit, preferably around the component attachment portion. The movable cover may extend beyond the component attachment portion when the movable cover is in the covering position.
Thus, in the preferred embodiment, the movable cover can extend, in use, over the component to cover at leasL a portion of the component when the movable cover is in the covering position.
Preferably, an insulating material is provided around the main portion of the conduit. The component attachment portions may be substantially devoid of said insulating material.
A securing arrangement may be provided to fixedly secure the cover in the covering position. The securing arrangement may comprise a plurality of fasteners. The fastoncrs may comprise bolts.
The securing arrangement may further include a securing portion of the movable cover which may aL least one aperture. The securing portion of the movable cover may define a plurality of said apertures one after the other around the movable cover.
A co-operating securing formation may be provided on the conduit to cooperate with the aforesaid securing portion of the movable cover. The securing formation may comprise a flange on the conduit. The attachment means may be defined as at least one hole in the conduit. The hole may be threaded. The securing formation may define a plurality of holes, each of which may be threaded.
Preferably the fasteners are received by the securing formation and the securing means to secure the cover in the covering position. The attachment means may extend around the conduit.
The conduit may comprise a plurality of pipe sections attached together at respective component attachment portions of each pipe section, for example by welding Preferably, when the movable cover is in Lhe covering position, the movable cover extends from one of the pipe sections to the adjacent pipe section attached to the first mentioned pipe section.
Preferably, the component attachment portion comprises an end region of each pipe section at which the pipe section is attached to the adjacent pipe section. At least some of the sections comprise a pair of component attachment portions, one at each end region.
Alternatively, the conduit may comprise a pipe attachable to a pipe member on a component for receiving fluid via the conduit. When the movable cover is in the covering position, the movable cover may extend across the component attachment portion to the pipe member.
An embodiment of the invention will now be described by way of example only, with reference to the accompanying drawing, which shows a sectional side view of a conduit arrangement.
Referring to the drawing, a conduit arrangement lO comprises a conduit 11 having a first pipe section 12 having a main portion 14 and a component attachment portion 16 provided at an end region of the pipe 12. The component attachment portion 16 is attached to a corresponding end region 17 of a pipe section or pipe member 18 mounted on an engine component 20.
In order to form the conduit 11, a plurality of pipe sections 12 are joined togchher by welding their abutting ends together. In the embodiment shown, tie component attachment position 16 is attached to the end region 1/ of the pipe member 18 by welding, as at joint 19. The engine component 20 can be any suitable component that requires the delivery of a fuel, for example fluid via the conduit 11.
The main portion 14 of the conduit 11 is surrounded b an insulating material 22 which is held in place adjacent the component attachment portion 16 by an annular flange 24. The component attachment portion 16 between the flange 24 and the end of the main portion 14 of the conduit 11 at the pipe section 12 shown is devoid of the insulating material 22.
In order to prevent heat transfer into the conduit 11 from hot gases surrounding the conduit arrangement 10, the insulating material 22 is used for the majority of tile conduit 11. However, in the vicinity of the component attachment portion 16 and the pipe member 18, which are substantially devoid of such insulating material, a movable cover in the form of an annular sleeve 26 is provided, thereby effectively providing a double skin to the component attachment portion 16 and the pipe member 18.
The annular sleeve 26 extends around the pipe section 12 in the vicinity of the component attachment portion 16 and is telescopically slidable over the pipe section 12 and the pipe member 18.
The sleeve 26 is slidable over the component attachment portion 16 and pipe member l8 on the component from a covering position shown in solid lines in the drawing, in which the component attachment portion 16 and the pipe member 18 are covered by the sleeve 26 to a non- covering position shown in broken lines, in which the component attachment portion 16 and pipe member 18 are uncovered by the sleeve 26.
When the sleeve 26 is in the non-covering position, it is possible to gain access to the joint 19 between the pipe section 12 and the pipe member 18, for example for maintenance purposes. With the sleeve 26 in the covering position, the component attachment portion 16 of the pipe section 12, and the end region is of the pipe member 18 are covered by the sleeve 26, and, thereby, insulated.
The sleeve 26 defines a plurality of through apertures 27 around the sleeve 26. The apertures 27 cars receive bolts 28 therethrough. The apertures 27 correspond with a plurality of threaded blind holes 29 into which the bolts 28 can be screwed to secure the sleeve 26 in its covering position, a plurality of bolts 28 are provided around the sleeve 26 to attach to the sleeve 26 to the lug 24.
When the sleeve 26 is in the covering position, the end region which covers the pipe member 18 engages an annular support ring 30 provided around the pipe memUcr 18.
The sleeve 26 is secured in the covering position by the bolts 28, which extend through the apertures 27 in the sleeve 26 and are screwed into the threaded hole 29.
In order to obtain access to the weld joint 19, for example for maintenance, the bolts 28 are removed from the holes 29 and apertures 27 and the sleeve 26 is then slid to its non-covering position shown in broken lines. When the maintenance is complete, the sleeve 26 is slid back to its covering position and the bolts 28 are screwed back into the holes 29 via the apertures 27 to secure the sleeve in the covering position. There is thus described a simple an effective way of providing access to a joint between two pipe sections 12, or a pipe section 12 and a pipe member 18.
Various modifications can be made without departing from the scope of the invention, for example, the conduit ll could be in the form of a pipe 32 formed as a single piece, and not as a plurality of pipe sections 12. Also, the preferred embodiment has been described as having through apertures 27 through the sleeve 26, threaded blind holes 29, and bolts 28 which can extend through the through apertures 27 to be threadably secured in the threaded blind holes 28. However, it will be appreciated by persons skilled in the art that the threaded holes 29 can be in any suitable place in the conduit arrangement to fix the sleeve 26 in its covering position.
Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be:.nderstood that the Applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to and/or shown in the drawings whether or not particular emphasis has been placed thereon.

Claims (19)

1. A conduit arrangement (10) characterized by a conduit (12) having a main portion (14) and a component attachment portion (16) for attaching the conduit (11) to a component (20), and the arrangement further comprises a movable cover (26) arranged on the component attachment portion (16), the movable cover (26) being movable from a covering position in which the component attachment portion(16) is covered and a non-covering position in which the component attachment portion(16) is uncovered to allow access thereto.
2. A conduit arrangement (10) according to claim 1 characterized in that the movable cover (26) comprises a slidablc cover.
3. A conduit arrangement (10) according to claim 1 or 2 characterized in that the movable cover (26) comprises a sleeve.
4. A conduit arrangement (10) according Lo claim 12 or 3 characterized in that the movable cover (26) is provided around the conduit at Lhe component attachment portion (16).
5. A conduit arrangement (10) according to claim 4 characterized in that the movable cover (26) extends beyond the component attachment portion (16) when the movable cover (26) is in the covering position, whereby the movable cover (26) can extend, in use, over the component to cover at least a portion of the component (20).
6. A conduit arrangement (10) according to any preceding claim characterized by a securing arrangement to fixedly secure the cover (26) in the covering position.
7. A conduit arrangement (10) according to claim 6 in that the securing arrangement comprises a plurality of fasteners.
8. A conduit arrangement (10) according to claim 7 characterised in that the fasteners comprise bolts (28).
9. A conduit arrangement (10) according to claim 8 characterised in that the securing arrangement further includes a securing portion of the movable cover defining at least one aperture (27).
10. A conduit arrangement (10) according to Claim 9 characterised in that the securing portion defines a plurality of apertures (25) arranged one after Lhe other around the movable cover (26).
11. A conduit arrangement (10) according to claim 9 or To, characterised in that a co-operating securing formation is provided on the conduit to co-operate with the aforesaid securing portion the securing formation defining at least one threaded hole (29) in the conduit (11).
1.2. A conduit arrangement (10) according to claim 11 characterised in that the securing formation defines a plurality of holes, each of which is threaded.
13. A conduit arrangement (10) according to any of claims 9 to 12 characterised in that the fasteners are received by the securing formation and the securing means to secure the cover (26) in the covering position.
14. A conduit arrangement (10) according to any preceding claim characterised in that the conduit (11) comprises a plurality of pipe sections (12) attached together at respective component attachment portions (16) of each pipe section (12), whereby, when the movable cover (26) is in the covering position, the movable cover (26) extends from one of the pipe sections (12) to the adjacent pipe section (12) attached to the first mentioned pipe section (12).
15. A conduit arrangement (10) according to any claim 13 characterised in that the component attachment portion (16) comprises an end region of each pipe section at which the pipe section (12) is attached to the adjacent pipe section.
16. A conduit arrangement (10) according to any claim l to 12 characterized in that the conduit (11) comprises a pipe (32) attachable to a pipe member (18) on a component (20) for receiving fluid via the conduit, whereby when the movable cover (26) is in the covering position, the movable cover extends across the component attachment portion (16) to the pipe member (18).
17. A gas turbine engine incorporating a conduit arrangement according to any preceding claim.
18. A conduit arrangement substantially as herein described with reference to the accompanying drawings.
19. Any novel subject matter or combination including novel subject matter disclosed herein, whether or not within the scope of or relating to the same invention as any of the preceding claims.
GB0416271A 2004-07-21 2004-07-21 A conduit arrangement incorporating a slidable cover Withdrawn GB2416376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0416271A GB2416376A (en) 2004-07-21 2004-07-21 A conduit arrangement incorporating a slidable cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0416271A GB2416376A (en) 2004-07-21 2004-07-21 A conduit arrangement incorporating a slidable cover

Publications (2)

Publication Number Publication Date
GB0416271D0 GB0416271D0 (en) 2004-08-25
GB2416376A true GB2416376A (en) 2006-01-25

Family

ID=32922552

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0416271A Withdrawn GB2416376A (en) 2004-07-21 2004-07-21 A conduit arrangement incorporating a slidable cover

Country Status (1)

Country Link
GB (1) GB2416376A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04145298A (en) * 1990-10-04 1992-05-19 Bridgestone Corp Piping cover
JPH07260070A (en) * 1994-03-24 1995-10-13 Max Co Ltd Safety mechanism in connecting device of air piping
JPH08254294A (en) * 1995-03-18 1996-10-01 Kiyousan Denki Kk Piping connecting structure
US6012480A (en) * 1997-11-03 2000-01-11 Helmsderfer; John A. Cover assembly for covering undersink piping utilizing sliding cover pieces
JP2004003542A (en) * 2002-05-31 2004-01-08 Inoac Corp Pipe with coating material
GB2400424A (en) * 2003-04-03 2004-10-13 Shand Engineering Ltd A spigot and socket connection for connecting hoses in-line

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04145298A (en) * 1990-10-04 1992-05-19 Bridgestone Corp Piping cover
JPH07260070A (en) * 1994-03-24 1995-10-13 Max Co Ltd Safety mechanism in connecting device of air piping
JPH08254294A (en) * 1995-03-18 1996-10-01 Kiyousan Denki Kk Piping connecting structure
US6012480A (en) * 1997-11-03 2000-01-11 Helmsderfer; John A. Cover assembly for covering undersink piping utilizing sliding cover pieces
JP2004003542A (en) * 2002-05-31 2004-01-08 Inoac Corp Pipe with coating material
GB2400424A (en) * 2003-04-03 2004-10-13 Shand Engineering Ltd A spigot and socket connection for connecting hoses in-line

Also Published As

Publication number Publication date
GB0416271D0 (en) 2004-08-25

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)