WO1991015701A1 - Procede pour installer une canalisation de cables - Google Patents

Procede pour installer une canalisation de cables Download PDF

Info

Publication number
WO1991015701A1
WO1991015701A1 PCT/FI1991/000101 FI9100101W WO9115701A1 WO 1991015701 A1 WO1991015701 A1 WO 1991015701A1 FI 9100101 W FI9100101 W FI 9100101W WO 9115701 A1 WO9115701 A1 WO 9115701A1
Authority
WO
WIPO (PCT)
Prior art keywords
hose
insulating layer
pipe
flow pipe
pipe element
Prior art date
Application number
PCT/FI1991/000101
Other languages
English (en)
Inventor
Stefan Lindvall
Original Assignee
Oy Muotekno Ab
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 Oy Muotekno Ab filed Critical Oy Muotekno Ab
Publication of WO1991015701A1 publication Critical patent/WO1991015701A1/fr

Links

Classifications

    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1228—Joining preformed parts by the expanding material
    • B29C44/1242—Joining preformed parts by the expanding material the preformed parts being concentric
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0033—Moulds or cores; Details thereof or accessories therefor constructed for making articles provided with holes
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • B29C33/505—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible cores or mandrels, e.g. inflatable
    • 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
    • F16L59/143—Pre-insulated pipes

Definitions

  • the present invention relates to a method for achieving a cable conduit into a hard foamed plastic insulating layer of a preinsulated pipe element, right in the vicinity of a flow pipe of the pipe element, which pipe element has a protective casing surrounding the insulating layer.
  • preinsulated pipe elements having a conduit for a cable
  • said conduit has been achieved by casting a longitudinal metallic or plastic profile inside an insulating layer, through which a heat or leakage alarm cable is drawn.
  • a heat or leakage alarm cable is drawn.
  • Such a solution is relatively well suited to heat cables, but especially in connection with leakage alarm cables, said solution is in no way applicable.
  • the alarm cable is fully insulated in said profile and cannot detect any leakages coming from the inside or the outside.
  • the object of the present invention is to eliminate this problem, which has been achieved by means of a solution characterized in that before feeding and foaming an insulating layer into a space between a flow pipe and a protective casing, a releasing-agent coated, pressurized longitudinal elastic hose is fixed outside the flow pipe, which hose is maintained at an elevated temperature during foaming and cooled rapidly after the foamed insulating material has set, whereby the plastic hose contracts and can be easily removed.
  • preinsulated pipe elemets are made as follows. Outside a flow pipe 1 is removably fastened a longitudinal, releasing-agent coated elastic hose 5, such as a plastic hose, which is closed at its one end and fastened at its other end to a pressure- air source, such as a compressor.
  • the flow pipe 1 and the hose 5 fastened thereto are threaded inside a protective casing 2, in which they are kept in position by spacer rings.
  • the ends of the pipe element are closed with end pieces, after which an insulating material 3 mixed with a foaming agent is fed into a space between the flow pipe 1 and the protective casing 2, whereby the heat released during the foaming process heats the pressurized hose 5, which as a result further expands.
  • the pressure of the hose 5 is reduced and the hose 5 is cooled rapidly, whereby it contracts and can be easily removed from the pipe element.
  • a cable conduit 4 is obtained, which is especially suited to a heat cable and a leakage alarm cable, since the wall of the cable conduit 4 comprises a foamed insulating material.
  • the pipe element may comprise a socketed or non-socketed straight pipe, pipe bend, branch piece, contraction piece or the like.
  • the flow pipe 1 can be made of plastic or metal
  • the insulating layer 3 may consist of polyurethane or other foamed plastic
  • the protective casing 2 can be made of plastic or metal.

Landscapes

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

Abstract

Procédé pour installer une canalisation de câbles (4) dans une couche isolante en mousse plastique dure (3) d'un élément de tuyau préisolé, à proximité d'un tuyau d'écoulement (1) de l'élément de tuyau, ce dernier ayant un tubage protecteur (2) qui entoure la couche isolante (2). La présente invention se caractérise par le fait qu'avant l'amenée et le moussage de la couche isolante (3) dans un espace compris entre le tuyau d'écoulement (1) et le tubage protecteur (2), un tuyau élastique longitudinal pressurisé (5) revêtu d'un agent de démoulage est fixé à l'extérieur du tuyau d'écoulement (1). Le tuyau élastique (5) est maintenu à une température élevée durant le moussage et refroidi rapidement quand le matériau isolant en mousse plastique (3) s'est solidifié. En conséquence, ledit tuyau élastique (5) se contracte et peut être enlevé facilement.
PCT/FI1991/000101 1990-04-09 1991-04-05 Procede pour installer une canalisation de cables WO1991015701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI901785 1990-04-09
FI901785A FI87902C (fi) 1990-04-09 1990-04-09 Foerfarande foer aostadkommande av en kabelkanal

Publications (1)

Publication Number Publication Date
WO1991015701A1 true WO1991015701A1 (fr) 1991-10-17

Family

ID=8530241

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1991/000101 WO1991015701A1 (fr) 1990-04-09 1991-04-05 Procede pour installer une canalisation de cables

Country Status (2)

Country Link
FI (1) FI87902C (fr)
WO (1) WO1991015701A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746695A1 (fr) * 1996-03-29 1997-10-03 Valeo Climatisation Procede de fabrication d'une planche de bord de vehicule automobile, avec conduits d'air integres, et planche de bord ainsi obtenue
NL1012057C2 (nl) * 1999-05-12 2000-11-14 Pipelife Nederland Bv Beschermde kunststofbuis.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400737A (en) * 1966-07-07 1968-09-10 Moore & Co Samuel Composite tubing product and apparatus for manufacturing the same
DE2233865A1 (de) * 1972-07-10 1974-01-24 Reimer Horstmann Leitungssystem fuer den transport von wasser oder sonstigen medien, mit integrierter zirkulationsleitung
EP0352943A2 (fr) * 1988-07-25 1990-01-31 Minnesota Mining And Manufacturing Company Procédé de fabrication d'une plaque munie d'au moins un canal incorporé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3400737A (en) * 1966-07-07 1968-09-10 Moore & Co Samuel Composite tubing product and apparatus for manufacturing the same
DE2233865A1 (de) * 1972-07-10 1974-01-24 Reimer Horstmann Leitungssystem fuer den transport von wasser oder sonstigen medien, mit integrierter zirkulationsleitung
EP0352943A2 (fr) * 1988-07-25 1990-01-31 Minnesota Mining And Manufacturing Company Procédé de fabrication d'une plaque munie d'au moins un canal incorporé

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2746695A1 (fr) * 1996-03-29 1997-10-03 Valeo Climatisation Procede de fabrication d'une planche de bord de vehicule automobile, avec conduits d'air integres, et planche de bord ainsi obtenue
WO1997036730A1 (fr) * 1996-03-29 1997-10-09 Valeo Climatisation Procede de fabrication d'une planche de bord de vehicule automobile, avec conduits d'air integres, et planche de bord ainsi obtenue
US6071591A (en) * 1996-03-29 2000-06-06 Valeo Climatisation Method for making a motor vehicle dashboard with built-in air ducts, and resulting dashboard
ES2151373A1 (es) * 1996-03-29 2000-12-16 Valeo Climatisation Procedimiento de fabricacion de un tablero de instrumentos de vehiculo automovil, con conductos de aire integrados, y tablero de instrumentos asi obtenido.
CN1079721C (zh) * 1996-03-29 2002-02-27 瓦莱奥空调公司 具有一体式气流管道的汽车仪表板的制造方法及这样制造的仪表板
DE19780320B3 (de) * 1996-03-29 2015-02-26 Valeo Climatisation Verfahren zur Herstellung eines Armaturenbretts für Kraftfahrzeuge mit eingearbeiteten Luftkanälen, und so hergestelltes Armaturenbrett
NL1012057C2 (nl) * 1999-05-12 2000-11-14 Pipelife Nederland Bv Beschermde kunststofbuis.
WO2000070255A1 (fr) * 1999-05-12 2000-11-23 Pipelife Nederland B.V. Conduit plastique protege

Also Published As

Publication number Publication date
FI901785A (fi) 1991-10-10
FI87902C (fi) 1993-03-10
FI901785A0 (fi) 1990-04-09
FI87902B (fi) 1992-11-30

Similar Documents

Publication Publication Date Title
US7418979B2 (en) Method and apparatus for preventing foam disbondment
US3402731A (en) Piping systems
US7037557B2 (en) Ceramic coating process for pre-insulated piping
US7143788B2 (en) High temperature line expansion installation with bellows
US3491171A (en) Method for forming thermally insulated pipe
US3929166A (en) Pipeline thermal insulation
CA1339258C (fr) Methode de fabrication d'un raccord
ES2195582T3 (es) Procedimiento para el tendido de cables de datos.
ES8204118A1 (es) Perfeccionamientos en acoplamientos metalicos flexibles parala union de conductos tubulares submarinos posados a grandesprofundidades
US3575445A (en) Thermally insulated pipe
IT1269503B (it) Dispositivo per il collegamento articolato di tubi di un impianto per gas di scarico
WO1991015701A1 (fr) Procede pour installer une canalisation de cables
DK0622583T3 (da) Fremgangsmåde og rørledning til installation i underjordiske rørledninger
US7032621B2 (en) High temperature line expansion installation with release agent
WO2011045567A1 (fr) Conduites revêtues pourvues d'une isolation
ATE356706T1 (de) Verfahren und anlage zur herstellung von längen vorisolierter rohre
AT389580B (de) Rohrleitungssystem, insbesondere mehrkanalrohrleitungssystem, und verfahren zu dessen herstellung
GB1181765A (en) Flexible Pipeline for the Transport of Liquids or Gases
SE9503707L (sv) Värmeisolerad rörledning
DE3662459D1 (en) Device for elastic connection of two double-walled pipes
PL348360A1 (en) Method of making a pipe, and a pipe
US2378214A (en) Expansion means
SE9402707D0 (sv) Insulation pipe system
JPS57136052A (en) Piping system for heat-insulating hose in solar heat collector
ATE127898T1 (de) Herstellungsverfahren für unterirdische pipelines aus wärmeisolierten konzentrischen rohren sowie pipeline und rohrelement dafür.

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA NO PL

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

NENP Non-entry into the national phase

Ref country code: CA