WO1997010463A1 - Manchon de raccordement par electrofusion - Google Patents

Manchon de raccordement par electrofusion Download PDF

Info

Publication number
WO1997010463A1
WO1997010463A1 PCT/GB1996/002253 GB9602253W WO9710463A1 WO 1997010463 A1 WO1997010463 A1 WO 1997010463A1 GB 9602253 W GB9602253 W GB 9602253W WO 9710463 A1 WO9710463 A1 WO 9710463A1
Authority
WO
WIPO (PCT)
Prior art keywords
wires
coupler
ribbon
bore
winding
Prior art date
Application number
PCT/GB1996/002253
Other languages
English (en)
Inventor
Branko Kostic
Original Assignee
Fusion Group 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 Fusion Group Plc filed Critical Fusion Group Plc
Priority to AU69377/96A priority Critical patent/AU6937796A/en
Publication of WO1997010463A1 publication Critical patent/WO1997010463A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B29D23/003—Pipe joints, e.g. straight joints
    • B29D23/005—Pipe joints, e.g. straight joints provided with electrical wiring
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
    • B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint

Definitions

  • This invention relates to electrofusion couplers
  • each end ofthe wire being connected to a terminal
  • the application of electrical power causes the heating wire to heat up to a temperature to melt
  • this wire cannot be used in electrofusion couplers to accept relatively large diameter pipes of over 125mm, because it has low specific resistivity which does not allow larger winding diameters to be employed to extend across a required fusion zone whilst maintaining acceptable spacings or pitch between adjacent turns ofthe wire
  • much more expensive wire such as copper alloy for example 95%Cu, 5%Sn, or laquered copper alloy, has been employed,
  • the object ofthe present invention is to provide an electrofusion coupler able to employ
  • an electrofusion coupler comprises a sleeve-like member with a winding of electrical resistance heating wire over a length of its bore, and said winding
  • electrofusion coupler comprises encasing at least two electrical resistance heating wires in a ribbon of a plastics material, attaching exposed ends ofthe at least two electrical resistance heating wires at each end ofthe ribbon to each other to connect the wires in parallel and to a terminal, winding the ribbon helically about a cyhndrical mandrel strategically locating the terminals, applying a mould to
  • any number of wires, two, three, or more of a required length can be attached to common terminals at each of their ends, and the grouping of two, three or more wires, helically wound along the bore ofthe coupler and in very close proximity to the surface ofthe bore.
  • the ribbon wound on the mandrel located in the mould in which the coupler is moulded is readily assimilated into the plastics of the coupler, thereby ensuring that the winding of parallel wires in close proximity to the surface ofthe bore ofthe coupler.
  • wires of considerably smaller diameter than such as copper alloy can be employed, with much smaller spacings between adjacent wires in
  • 1.51mm would ordinarily be used for a given requirement of electrical properties, relatively simple calculation confirms that, for the same electrical properties, copper wire of 0.7mm diameter would be required. However, for the same length of wire and the same fusion zone required, copper wire of 0.7mm diameter single wound at the same pitch as copper alloy wire at 1.51mm diameter has the
  • A wire cross-sectional area
  • Figure 1 is a schematic sectional side elevation of a coupler in accordance with the invention
  • FIG 2 is an enlargement of detail A of Figure 1 .
  • Figure 3 is a schematic representation of a mandrel on which a coupler ofthe invention is formed
  • a coupler 1 is formed as a tubular member 2 of a appropnate plastics mate ⁇ al, the coupler having a bore 3
  • embedded in the surface of the bore 3 is a ⁇ bbon 4 of a compatible plastics mate ⁇ al containing two spaced wires 5 of copper, the ⁇ bbon being formed such as by known extrusion means At each end of the ⁇ bbon 4, it passes
  • containing the copper wires 5 is wrapped on a cylindncal mandrel 8, with the terminals 6 positioned to extend to the same side of the mandrel and to be co-planar there being a suitable means to hold the terminals in this position within a mould 9 applied to the mandrel and in which the coupler is
  • the ⁇ bbon 4 becomes an integral part ofthe bore of the coupler ensuring that the copper wires connected in parallel e in close proximity to the surface
  • ⁇ bbon to the mandrel can be effected with relative ease, and to so locate the ⁇ bbon as to provide an even spacing of the copper wires along its length and, consequently, along the length of the bore
  • the embedded copper wires heat the surface ofthe bore and the adjacent extemal surface ofthe inserted pipe ends to cause the fusion ofthe pipe ends to the coupler and hence produce an effective joint

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

Cette invention concerne des manchons de raccordement (1) par électrofusion et est destinée à permettre l'emploi de fils relativement fins comme fils de chauffage (5) par résistance électrique avec une bonne garantie d'un chauffage uniforme sur toute la longueur du manchon de raccordement et une aussi bonne garantie d'absence de mise en court circuit de spires adjacentes du fil. Pour atteindre cet objectif, un fil de chauffage par résistance électrique est enroulé le long d'une partie de la paroi intérieure d'un joint en forme de manchon, cet enroulement étant constitué de plusieurs fils reliés en parallèle. De préférence, plusieurs longueurs de fil sont noyées dans un ruban de matière plastique (4), les extrémités des fils étant dénudées, reliées entre elles et fixées à une borne. Le ruban peut être enroulé sur un mandrin et moulé directement dans la surface de la paroi intérieure du manchon de raccordement au moment du moulage de celui-ci.
PCT/GB1996/002253 1995-09-13 1996-09-12 Manchon de raccordement par electrofusion WO1997010463A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69377/96A AU6937796A (en) 1995-09-13 1996-09-12 Electrofusion couplers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9518707.6 1995-09-13
GBGB9518707.6A GB9518707D0 (en) 1995-09-13 1995-09-13 Electrofusion couplers

Publications (1)

Publication Number Publication Date
WO1997010463A1 true WO1997010463A1 (fr) 1997-03-20

Family

ID=10780651

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/002253 WO1997010463A1 (fr) 1995-09-13 1996-09-12 Manchon de raccordement par electrofusion

Country Status (3)

Country Link
AU (1) AU6937796A (fr)
GB (1) GB9518707D0 (fr)
WO (1) WO1997010463A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100451426C (zh) * 2007-04-25 2009-01-14 钟世全 一种低碳钢加热丝pe电熔管件
WO2018185731A1 (fr) * 2017-04-07 2018-10-11 BRIE, Sebastián José Procédé pour effectuer l'introduction des treillis utilisés comme agents chauffants dans la soudure par fusion de matériaux polyoléfiniques employés dans la fabrications de pièces
WO2021170245A1 (fr) * 2020-02-28 2021-09-02 Agru Kunststofftechnik Gesellschaft M.B.H. Raccord soudé
CN114484127A (zh) * 2022-04-01 2022-05-13 浙江大学 一种抗氢气渗透的塑料电熔管件

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1125293A (fr) * 1954-05-26 1956-10-29 St George Light Engineering Co Procédé et dispositif pour la jonction de surfaces thermoplastiques
GB1121850A (en) * 1964-11-14 1968-07-31 Furukawa Electric Co Ltd A jointing method of pipe shaped plastics and the jointing materials
DE1479298A1 (de) * 1962-11-19 1969-05-14 Gen Motors Corp Biegsamer Draht zum Haftverbinden von Teilen
EP0038659A1 (fr) * 1980-04-22 1981-10-28 Ube Industries, Ltd. Enveloppe extérieure rétrécissable à la chaleur
FR2522457A1 (fr) * 1982-03-01 1983-09-02 Sloane Mfg Co R & G Element formant resistance bifilaire, element chauffant obtenu a partir de ce dernier et procede de fabrication d'un tel element chauffant
FR2562613A1 (fr) * 1984-04-10 1985-10-11 Laurens Pierre Procede d'elaboration de produits d'assemblage et leur mise en application pour collage ou soudage, ainsi que les produits obtenus par la mise en oeuvre de ce procede
JPH0389095A (ja) * 1989-08-30 1991-04-15 Sumitomo Metal Ind Ltd 熱可塑性樹脂製管継手およびその製造方法
JPH0492A (ja) * 1990-04-13 1992-01-06 Sumitomo Metal Ind Ltd エレクトロヒュージョン継手
JPH062795A (ja) * 1992-06-17 1994-01-11 Sumitomo Metal Ind Ltd プラスチック製電熱融着継手とその製造方法
WO1994005485A1 (fr) * 1992-09-08 1994-03-17 E. O. Butts Consultants Ltd. Soudure de materiaux thermoplastiques par fusion electrique
DE9401411U1 (de) * 1993-01-30 1994-03-31 Hewing Gmbh Elektrisch beheizbare Schweißmuffe für die Herstellung einer Schweiß-Verbindung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1125293A (fr) * 1954-05-26 1956-10-29 St George Light Engineering Co Procédé et dispositif pour la jonction de surfaces thermoplastiques
DE1479298A1 (de) * 1962-11-19 1969-05-14 Gen Motors Corp Biegsamer Draht zum Haftverbinden von Teilen
GB1121850A (en) * 1964-11-14 1968-07-31 Furukawa Electric Co Ltd A jointing method of pipe shaped plastics and the jointing materials
EP0038659A1 (fr) * 1980-04-22 1981-10-28 Ube Industries, Ltd. Enveloppe extérieure rétrécissable à la chaleur
FR2522457A1 (fr) * 1982-03-01 1983-09-02 Sloane Mfg Co R & G Element formant resistance bifilaire, element chauffant obtenu a partir de ce dernier et procede de fabrication d'un tel element chauffant
FR2562613A1 (fr) * 1984-04-10 1985-10-11 Laurens Pierre Procede d'elaboration de produits d'assemblage et leur mise en application pour collage ou soudage, ainsi que les produits obtenus par la mise en oeuvre de ce procede
JPH0389095A (ja) * 1989-08-30 1991-04-15 Sumitomo Metal Ind Ltd 熱可塑性樹脂製管継手およびその製造方法
JPH0492A (ja) * 1990-04-13 1992-01-06 Sumitomo Metal Ind Ltd エレクトロヒュージョン継手
JPH062795A (ja) * 1992-06-17 1994-01-11 Sumitomo Metal Ind Ltd プラスチック製電熱融着継手とその製造方法
WO1994005485A1 (fr) * 1992-09-08 1994-03-17 E. O. Butts Consultants Ltd. Soudure de materiaux thermoplastiques par fusion electrique
DE9401411U1 (de) * 1993-01-30 1994-03-31 Hewing Gmbh Elektrisch beheizbare Schweißmuffe für die Herstellung einer Schweiß-Verbindung

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 264 (M - 1132) 4 July 1991 (1991-07-04) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 137 (M - 1231) 7 April 1992 (1992-04-07) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 196 (M - 1589) 6 April 1994 (1994-04-06) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100451426C (zh) * 2007-04-25 2009-01-14 钟世全 一种低碳钢加热丝pe电熔管件
WO2018185731A1 (fr) * 2017-04-07 2018-10-11 BRIE, Sebastián José Procédé pour effectuer l'introduction des treillis utilisés comme agents chauffants dans la soudure par fusion de matériaux polyoléfiniques employés dans la fabrications de pièces
WO2021170245A1 (fr) * 2020-02-28 2021-09-02 Agru Kunststofftechnik Gesellschaft M.B.H. Raccord soudé
CN114484127A (zh) * 2022-04-01 2022-05-13 浙江大学 一种抗氢气渗透的塑料电熔管件

Also Published As

Publication number Publication date
GB9518707D0 (en) 1995-11-15
AU6937796A (en) 1997-04-01

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