WO2008132680A3 - Pipes and couplings - Google Patents

Pipes and couplings Download PDF

Info

Publication number
WO2008132680A3
WO2008132680A3 PCT/IB2008/051601 IB2008051601W WO2008132680A3 WO 2008132680 A3 WO2008132680 A3 WO 2008132680A3 IB 2008051601 W IB2008051601 W IB 2008051601W WO 2008132680 A3 WO2008132680 A3 WO 2008132680A3
Authority
WO
WIPO (PCT)
Prior art keywords
lining
pipe
sleeve
connector
provides
Prior art date
Application number
PCT/IB2008/051601
Other languages
French (fr)
Other versions
WO2008132680A2 (en
Inventor
John Peter Wright
Original Assignee
John Peter Wright
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 John Peter Wright filed Critical John Peter Wright
Publication of WO2008132680A2 publication Critical patent/WO2008132680A2/en
Publication of WO2008132680A3 publication Critical patent/WO2008132680A3/en

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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
    • F16L58/1036—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe the coating being a preformed pipe
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
    • F16L21/065—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends tightened by tangentially-arranged threaded pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0658—PE, i.e. polyethylene characterised by its molecular weight
    • B29K2023/0683—UHMWPE, i.e. ultra high molecular weight polyethylene

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention provides a method of making a composite pipe having a steel sleeve with a plastics material lining. The lining is heated and drawn into the sleeve which has an inner circumference smaller than the outer circumference of the lining. The lining is then allowed to cool to ambient temperature in the assembled pipe. The lining will initially be heated to about 70 degrees Celsius and cooling is to below ambient temperature, about minus 30 degrees Celsius, a plurality of times. The lining is drawn beyond the ends of the sleeve and cut after the cooling process. The invention also provides for such a pipe wherein the sleeve is externally screw-threaded at its ends to engage a pair of internally screw-threaded connectors. Each connector has a plastics material bush with the same internal diameter as the lining. The bush has a lip locatable between a step in the connector and the end of the pipe when it is engaged in the screw-thread. Furthermore, the invention also provides for a pipe connector of the kind mentioned.
PCT/IB2008/051601 2007-04-25 2008-04-25 Pipes and couplings WO2008132680A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2007/03031 2007-04-25
ZA200703031 2007-04-25

Publications (2)

Publication Number Publication Date
WO2008132680A2 WO2008132680A2 (en) 2008-11-06
WO2008132680A3 true WO2008132680A3 (en) 2009-01-29

Family

ID=39720292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/051601 WO2008132680A2 (en) 2007-04-25 2008-04-25 Pipes and couplings

Country Status (2)

Country Link
WO (1) WO2008132680A2 (en)
ZA (1) ZA200906134B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109354752A (en) * 2018-11-28 2019-02-19 吉林美高管道系统有限公司 Polyvinyl piping materials

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372462A (en) * 1965-10-11 1968-03-12 Upjohn Co Method of making plastic lined metal pipe
US5114634A (en) * 1991-03-21 1992-05-19 Mcmillan Jim S Method of lining a host pipe with a liner using cryogenic cooling
US5135698A (en) * 1991-05-28 1992-08-04 Conoco Inc. Lining of pipelines using a continuous tubular pull-through plastic liner
GB2353581A (en) * 1999-08-27 2001-02-28 Uponor Ltd Swage lining

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372462A (en) * 1965-10-11 1968-03-12 Upjohn Co Method of making plastic lined metal pipe
US5114634A (en) * 1991-03-21 1992-05-19 Mcmillan Jim S Method of lining a host pipe with a liner using cryogenic cooling
US5135698A (en) * 1991-05-28 1992-08-04 Conoco Inc. Lining of pipelines using a continuous tubular pull-through plastic liner
GB2353581A (en) * 1999-08-27 2001-02-28 Uponor Ltd Swage lining

Also Published As

Publication number Publication date
ZA200906134B (en) 2010-05-26
WO2008132680A2 (en) 2008-11-06

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