GB2446102A - Improved spacer - Google Patents

Improved spacer Download PDF

Info

Publication number
GB2446102A
GB2446102A GB0809605A GB0809605A GB2446102A GB 2446102 A GB2446102 A GB 2446102A GB 0809605 A GB0809605 A GB 0809605A GB 0809605 A GB0809605 A GB 0809605A GB 2446102 A GB2446102 A GB 2446102A
Authority
GB
United Kingdom
Prior art keywords
pipe
spacer
inside face
friction
coefficient
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.)
Granted
Application number
GB0809605A
Other versions
GB0809605D0 (en
GB2446102B (en
Inventor
Howard Bradfield
Mussa Mahomed
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.)
Nylacast Ltd
Original Assignee
Nylacast Ltd
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 Nylacast Ltd filed Critical Nylacast Ltd
Publication of GB0809605D0 publication Critical patent/GB0809605D0/en
Publication of GB2446102A publication Critical patent/GB2446102A/en
Application granted granted Critical
Publication of GB2446102B publication Critical patent/GB2446102B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F16L7/00—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
    • F16L9/19—Multi-channel pipes or pipe assemblies

Abstract

A pipe in pipe spacer (10) for use in coaxial spacing a first pipe within a second pipe, for example, an oil pipe within a carrier pipe. The spacer (10) has an inner face (2) which contacts and engages with the outer surface of the first pipe and an outer surface (3) which contacts the carrier pipe. The inside face (2) of the pipe in pipe spacer (10) is coated with a coating (8) relatively of a soft deformable material, such as zinc, so that the coefficient of friction between the outer surface of the first pipe and the inside face of the pipe in pipe spacer is higher than the coefficient of friction between the outer surface of the first pipe and the inside face of the uncoated pipe in pipe spacer.
GB0809605A 2005-11-19 2006-11-20 Improved spacer Expired - Fee Related GB2446102B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0523599A GB0523599D0 (en) 2005-11-19 2005-11-19 Improved spacer
PCT/GB2006/004311 WO2007057695A1 (en) 2005-11-19 2006-11-20 Improved spacer

Publications (3)

Publication Number Publication Date
GB0809605D0 GB0809605D0 (en) 2008-07-09
GB2446102A true GB2446102A (en) 2008-07-30
GB2446102B GB2446102B (en) 2010-10-20

Family

ID=35580356

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0523599A Ceased GB0523599D0 (en) 2005-11-19 2005-11-19 Improved spacer
GB0809605A Expired - Fee Related GB2446102B (en) 2005-11-19 2006-11-20 Improved spacer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0523599A Ceased GB0523599D0 (en) 2005-11-19 2005-11-19 Improved spacer

Country Status (2)

Country Link
GB (2) GB0523599D0 (en)
WO (1) WO2007057695A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2535145B (en) 2015-02-03 2017-10-18 Acergy France SAS Termination bulkheads for subsea pipe-in-pipe systems
GB2546749B (en) * 2016-01-26 2019-01-09 Nylacast Ltd Spacer for a double walled marine conduit
GB2577289B (en) 2018-09-20 2021-04-28 Acergy France SAS Spacers for pipe-in-pipe systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037627A (en) * 1975-05-20 1977-07-26 W. R. Grace Limited Separator for concrete wrapping to submarine pipelines
CH664204A5 (en) * 1983-11-19 1988-02-15 Kabelmetal Electro Gmbh Flexible tube for fluid transport is double-walled to monitor Leakage
US20020062546A1 (en) * 2000-07-07 2002-05-30 Obeshaw Dale Francis Coated contoured crushable structural members and methods for making the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5458438A (en) * 1991-09-06 1995-10-17 Foam Enterprises, Inc. Insulating pipe spacers
FR2859518B1 (en) * 2003-09-08 2006-09-22 Technip France SPACING AND CENTERING DEVICE FOR DOUBLE-ENVELOPED RIGID DUCT WITH LOW COEFFICIENT THERMAL TRANSFER
DE602004009762T2 (en) * 2004-05-19 2008-08-28 Stampa Tecnica Articoli Materiali Plastici- S.T.A.M.P. S.P.A., Pozzuolo Martesana Modular spacer for pipes passed through

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037627A (en) * 1975-05-20 1977-07-26 W. R. Grace Limited Separator for concrete wrapping to submarine pipelines
CH664204A5 (en) * 1983-11-19 1988-02-15 Kabelmetal Electro Gmbh Flexible tube for fluid transport is double-walled to monitor Leakage
US20020062546A1 (en) * 2000-07-07 2002-05-30 Obeshaw Dale Francis Coated contoured crushable structural members and methods for making the same

Also Published As

Publication number Publication date
GB0809605D0 (en) 2008-07-09
GB0523599D0 (en) 2005-12-28
WO2007057695A1 (en) 2007-05-24
GB2446102B (en) 2010-10-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110120