MX170580B - Um metodo para instalar un revestimiento termoplastico en tuberias - Google Patents

Um metodo para instalar un revestimiento termoplastico en tuberias

Info

Publication number
MX170580B
MX170580B MX019134A MX1913490A MX170580B MX 170580 B MX170580 B MX 170580B MX 019134 A MX019134 A MX 019134A MX 1913490 A MX1913490 A MX 1913490A MX 170580 B MX170580 B MX 170580B
Authority
MX
Mexico
Prior art keywords
liner
temperature
cylindrical
pressure
coating
Prior art date
Application number
MX019134A
Other languages
English (en)
Inventor
Patrick R Ledoux
Original Assignee
Pipe Liner Inc
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 Pipe Liner Inc filed Critical Pipe Liner Inc
Publication of MX170580B publication Critical patent/MX170580B/es

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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/20—Straightening or flattening of tubes
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/08—Bending or folding of tubes or other profiled members
    • B29C53/086—Bending or folding of tubes or other profiled members bending radially, i.e. deformig the cross-section of the tube
    • 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
    • B29C63/343—Lining or sheathing of internal surfaces using tubular layers or sheathings the tubular sheathing having a deformed non-circular cross-section prior to introduction
    • 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
    • B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
    • B29C63/46—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses of internal surfaces
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0014—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping tubes or blown tubular films

Landscapes

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

Abstract

La presente invención se refiere a un método para instalar un revestimiento termoplástico en unas tuberias generalmente cilíndricas,el método está caracterizado porque comprende los pasos de: (a) proporcionar un revestimiento formado de material termoplastico que tiene una forma de sección transversal no cilíndrica con su dimensión de sección transversal más grande de valor más pequeño que el diámetro interno del tubo y que tiene una memoria de forma generalmente cilíndrica el revestimiento es sensible a una temperatura de activación de la memoria de forma por encima de la temperatura de fusión de cristalización del revestimiento termoplastico por lo que el revestimiento puede ser formado en una configuración generalmente cilíndrica; (b) estirar el revestimiento no cilíndrico dentro del tubo tal que se extienda hasta los opuestos del mismo; (c) calentar el revestimiento no cilíndrico hasta una primera temperatura inferior a la temperatura de activación; (d) presurizar el revestimiento no cilíndrico hasta una primera presión para provocar que el revestimiento asuma una configuración de sección transversal generalmente, cilíndrica, generalmente conforme al contorno interior del tubo cuando el revestimiento se calienta y está a una temperatura por abajo de la temperatura de activación; (e) mantener el revestimiento a la primera temperatura y la primera presión por un periodo de tiempo predeterminado; (f) después de ésto; i) aumentar la temperatura en el revestimiento hasta una segunda temperatura superior a la temperatura del revestimiento lo suficiente para inactivar cualquier mamoria de la forma no cilíndrica y reactivar a memoria de la forma cilíndrica y ii) aumentar la presión en el revestimiento hasta una segunda presión superior a la primera presión mediante lo cual el revestimiento se adheríva generalmente al contorno interior generalmente cilíndrico del tubo; y (g) enfriar el revestimiento hasta una temperatura inferior a la temperatura de activación y eliminar la segunda presión del revestimiento, con lo cual el revestimiento mantiene su forma generalmente cilíndrica.
MX019134A 1989-01-19 1990-01-15 Um metodo para instalar un revestimiento termoplastico en tuberias MX170580B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/298,754 US4998871A (en) 1989-01-19 1989-01-19 Apparatus for deforming plastic tubing for lining pipe

Publications (1)

Publication Number Publication Date
MX170580B true MX170580B (es) 1993-08-31

Family

ID=23151885

Family Applications (1)

Application Number Title Priority Date Filing Date
MX019134A MX170580B (es) 1989-01-19 1990-01-15 Um metodo para instalar un revestimiento termoplastico en tuberias

Country Status (3)

Country Link
US (1) US4998871A (es)
AT (1) AT400355B (es)
MX (1) MX170580B (es)

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Also Published As

Publication number Publication date
AT400355B (de) 1995-12-27
ATA11990A (de) 1995-04-15
US4998871A (en) 1991-03-12

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