[go: up one dir, main page]

WO2005068892A1 - Raccord de tuyauterie plastique/metallique ameliore - Google Patents

Raccord de tuyauterie plastique/metallique ameliore Download PDF

Info

Publication number
WO2005068892A1
WO2005068892A1 PCT/GB2005/000102 GB2005000102W WO2005068892A1 WO 2005068892 A1 WO2005068892 A1 WO 2005068892A1 GB 2005000102 W GB2005000102 W GB 2005000102W WO 2005068892 A1 WO2005068892 A1 WO 2005068892A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
coupling device
metal
plastics
components
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.)
Ceased
Application number
PCT/GB2005/000102
Other languages
English (en)
Inventor
John Alexandre Boudry
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.)
Petrotechnik Ltd
Original Assignee
Petrotechnik 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 Petrotechnik Ltd filed Critical Petrotechnik Ltd
Publication of WO2005068892A1 publication Critical patent/WO2005068892A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
    • F16L47/24—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
    • 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"
    • B29C65/3472—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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/561—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using screw-threads being integral at least to one of the parts to be joined
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/50—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
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/52298—Joining tubular articles involving the use of a socket said socket being composed by several elements
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
    • B29C66/7352—Thickness, e.g. very thin
    • B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • 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
    • 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
    • F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02—Sealing
    • F16L5/022—Sealing by welding
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Definitions

  • the present invention relates to a method and apparatus for forming a plastics to metal joint in a pipework system. It is particularly applicable, but in no way limited, to a method and apparatus for joining together a pipe made of plastics material and a metal fitting as part of a petroleum pipework system.
  • Pipes made of plastics material are used extensively in industry and in construction. Many applications now use pipes made from plastics materials such as polyethylene and polypropylene rather than metal. One such application is the pipework used in petroleum installations such as garage forecourts.
  • transition fittings when such plastics pipes need to be connected to metal pipework, or other ancillary equipment, couplings known as transition fittings must be used.
  • transition fittings rely on mechanical compression joints to connect, for example, polyethylene pipes to metal pipes and/or fittings.
  • Such transition fittings fall into two general types: fittings which are factory assembled and fittings which are designed to be assembled on site. Of the two, factory assembled fittings are generally preferred as mechanical joints for site assembly tend to be expensive, require the use of special tools, and their effectiveness is often dependent upon the level of skill of the assembler.
  • GB 2,298,014A (Wask-RMF Limited) describes an elaborate coupling for joining a plastics pipe to metal pipework, or other ancillary equipment, which can be joined to a plastics pipe on site by an electrofusion process without the requirement for a separate electrofusion coupler.
  • This type of fitting uses the body of the metal fitting itself as part of the electrical circuit to conduct current to the heating element.
  • both terminals of the heating element may be sited away from the area of the join. This is to avoid the possibility of the heating element providing a leak path through which fluid may egress when the join is subjected to fluid pressure.
  • a coupling device for use in forming a plastics material to metal joint in a pipeline system, said device comprising:- (i) a first component comprising substantially of metal; (ii) a second component comprising substantially of plastics material, the first and second components being joined together in a fluid tight manner, and wherein the second component comprises an open-ended socket adapted to receive a pipeline component; characterised in that the second component further comprises energy transfer means with electrical terminals located on the second plastic component, said energy transfer means being adapted to cause in use the coupling device and the pipeline component to form a substantially fluid-tight seal therebetween.
  • the first metal component extends along a portion of the inside of the open socket of the second plastics component.
  • the first metal component acts as a heat sink.
  • At least one O-ring is used to maintain a substantially fluid tight seal between the first and second components.
  • the first metal component engages with a shoulder on the second component to prevent separation of the components in use.
  • the energy transfer means comprises a heating wire.
  • Figure 1 shows a plan view of a coupling, according to a first embodiment of the present invention, connected to a metal pipe at one end and a plastic pipe at the other;
  • Figure 2 shows a plan view of the coupling in Figure 1 excluding the pipework components
  • Figure 3 shows a plan view of the metal component of the coupling shown in Figure 2;
  • Figure 4 shows a plan view of the plastic component containing the electrofusion windings of the coupling shown in Figure 2;
  • Figure 5 shows a plan view of a version of the metal component of the coupling with a flange connector.
  • FIG. 1 shows a coupling device according to a first embodiment of the present invention.
  • the coupling device 10 consists of a first substantially metallic component 11 and a second substantially plastics component 12.
  • the two components are joined together during manufacture to form a substantially fluid tight seal there between by methods which are known to those skilled in the art.
  • the plastics components could be integrally moulded onto the metal component as one operation, or the plastic and metal components could be joined together by a separate swaging operation.
  • the metal component 11 has an end portion 13 remote from the plastics component 12 which is adapted to receive a threaded metal component.
  • screw threads 14 are used to engage a threaded metal pipe 15.
  • the end portion 13 could be a flange or indeed any other union to permit the metal component 11 to engage with another component.
  • the metal should be any fuel resistant metal such as stainless steel and may optionally include linings or coverings which may be formed from metal or from a plastics material, as selected by the materials specialist.
  • the plastics component 12 defines an open ended cylindrical socket for receiving the end of a plastic pipe 18 to which the coupling engages in use.
  • the inner surface 24 of the second component 12 accommodates windings 16 of electrical heating wire which lie close to, or at, the internal surface of the plastics component 12. These windings are electrically connected to terminal pins 17 projecting from the plastics component 12.
  • the terminal pins 17 can be shrouded by hollow cylindrical plastic terminal shrouds (not shown) projecting from, and integral with, the plastic component 12.
  • pipe generally refers to a circular cross-sectioned pipe. However, this invention also covers other cross sections such as box sections, corrugated and the like and also single walled or secondarily contained pipes.
  • the plastic component 12 is designed so that in engages tightly with the plastics pipe 18. In use, application of electric current to the terminals 17 causes the windings to heat up and fuse the surface of the plastics component 24 with the pipe 18.
  • the material selected for at least the internal surface region of the plastics component 12 should comprise a fusible material which, when heated via the energy transfer means, at least partially melts, causing the plastics component and the plastic pipe to fuse together.
  • fusible material has a very broad meaning in this context. It is intended to encompass any polymeric material which, when energy is applied to it, can melt and fuse together with an adjacent material and is also intended to additionally cover thermosetting adhesives and resins. Ideally a thermoplastic such as polyethylene can be used.
  • An advantage of the present invention is that the two components of this fitting can be manufactured using existing techniques, and require no special apparatus.
  • a portion 20 of the metal component 11 extends along the inside bore of the open socket of the second plastics component 12. This strengthens the joint between the metal and plastic components.
  • An outwardly extending flange or hook 22 of the extended portion 20 engages with a shoulder or step 23 on the plastics component 12 to prevent lateral or axial movement of the plastics component once the joint between them has been made and provides greater strength and stability once the two components are joined together.
  • the metal component 11 can be slotted radially or longitudinally to resist any movement of the plastic component 12.
  • Additional ways to improve the fluid tight nature of the seal between these two components include a series of grooves, slots or ridges, which can be formed in the region where the two sleeves overlap. When the joint is formed, plastics material fills these grooves, preventing the two components from separating in use.
  • the seal between the two sleeves can be further improved by incorporating a sealing means such as an O-ring.
  • a sealing means such as an O-ring.
  • the O-ring nests into an annular channel around the circumference of one or other of the components. It will be appreciated that the O-ring seal can be positioned during assembly. For ease of construction it would normally be positioned on the outer surface of the metal component.
  • One or more O-rings could be fitted towards the main body of the metal fitting, towards the main body of the plastics fitting or alternatively at both ends of the join thus maximising the protection provided.
  • the extended portion 20 has the additional advantage that it could allow the metal component 11 to act as a heat sink when the electrical heating wire 16 is fusing the plastics component 12. Because of the compact size of the coupling, the energy transfer means is located relatively close to the joint between the metal 19 and plastic 21 components. Because the metal and plastic components have different specific heat capacities and expansion rates, heating this joint region could result in the fluid tight seal being broken as the plastics material moves away from the metallic component.
  • the extending portion 20 helps the heat to be drawn away from the sensitive region in which the two components are joined and away from any electrical terminal(s) which may be in that part of the fitting.
  • join can additionally be made substantially fluid tight by the use of one or more internal O-rings or other sealing member.
  • Figure 1 is not to scale.
  • the elongated region of the plastics portion 12 that runs along the extended portion 10 of the metal component and is crimped by the metal component at region 19 would be significantly larger in diameter (thicker in section) to give extra strength to this area.
  • Figure 2 shows the coupling device without the pipework components it would join together.
  • Figure 3 shows an isolated view of the metal component and figure 4 shows an isolated view of the plastics component.
  • Figure 5 shows an isolated view of the metal component with a flange connector. This enables the metal portion to be connected to any standard flange connector and allows for a plastic component to be easily connected to a flanged metal component via the fitting. Generally the flanges of the fitting and the object are held together using clamps or screws and can be rendered fluid tight using one or more O-rings.
  • the second plastic component is formed from one or more plastics materials selected from the group comprising:- polyethylene; polypropylene; polyvinyl chloride; polybutylene polyurethanes; polyamides, including polyamides 6, 6.6, 6.10, 6.12, 11 and 12; polyethylene terphthalate; polybutylene terephthalate; polyphenylene sulphide; polyoxymethylene (acetal); ethylene/vinyl alcohol copolymers; polyvinylidene fluoride (PVDF) and copolymers; polyvinyl fluoride (PVF); tetrafluoroethylene-ethylene copolymer (ETFE); tetrafluoroethylene-hexafluroethylene copolymers (FEP) ethylene tetrafluoroethylene hexafluropropylene terpolymers (EFEP) terpolymers of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride (THV);
  • plastics material which is most compatible to the pipe to which it will be joined and with the lowest permeability to the fluid in question will usually be chosen by the materials specialist. Furthermore, it is known to use blends of two or more polymers and this invention extends to cover known and yet to be developed blends of plastics material.
  • the plastic component can be formed from 2 or more layers including but not limited to a barrier layer or layers. This form of construction may require the use of one or more tie or adhesive layer between adjacent layers. Alternatively direct bonding may be used to adhere the individual layers, preferably during melt processing, whereby one or both of the materials have been chemically modified to bond to the other. Additionally, the plastics material or barrier layer(s) may incorporate a dispersed electrically conductive material producing a maximum surface resistivity of 10 6 ⁇ /sq. This avoids build up of potentially dangerous static electrical charges.
  • PVDF polyvinylidene fluoride
  • PVF polyvinyl fluoride
  • ETFE tetrafluoroethylene-ethylene copolymer
  • FEP ethylene tetrafluoroethylene hexafluropropylene terpolymers
  • PTFE polychlorotrifluoroethylene
  • PCTFE polychlorotrifluoroethylene

Landscapes

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

Abstract

La présente invention a trait à un dispositif de couplage (10) destiné à être utilisé dans la formation d'un joint de matière plastique/métallique dans un système de canalisation, ledit dispositif comportant : (i) un premier composant (11) constitué essentiellement de métal ; (ii) un deuxième composant (12) constitué essentiellement de matière plastique, les premier (11) et deuxième (12) composants étant assemblés de manière étanche aux fluides, et dans lequel le deuxième composant (12) comporte une emboîture ouverte apte à la réception d'un composant de canalisation (18). L'invention se caractérise en ce que le deuxième composant (12) comporte également un moyen de transfert d'énergie (16) avec des bornes électriques (17) situé sur le deuxième composant en matière plastique (12), ledit moyen de transfert d'énergie (16) étant apte à entraîner en fonctionnement la formation entre le dispositif de couplage (10) et le composant de canalisation (18) un joint sensiblement étanche aux fluides.
PCT/GB2005/000102 2004-01-13 2005-01-13 Raccord de tuyauterie plastique/metallique ameliore Ceased WO2005068892A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0400665.6 2004-01-13
GBGB0400665.6A GB0400665D0 (en) 2004-01-13 2004-01-13 Improved plastic to metal fitting

Publications (1)

Publication Number Publication Date
WO2005068892A1 true WO2005068892A1 (fr) 2005-07-28

Family

ID=31503821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/000102 Ceased WO2005068892A1 (fr) 2004-01-13 2005-01-13 Raccord de tuyauterie plastique/metallique ameliore

Country Status (2)

Country Link
GB (1) GB0400665D0 (fr)
WO (1) WO2005068892A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001144A1 (fr) * 2012-06-26 2014-01-03 Voss Automotive Gmbh Dispositif de raccordement pour conduites de fluide
CN108039537A (zh) * 2018-01-10 2018-05-15 华霆（合肥）动力技术有限公司 复合接头、液冷装置及供电设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1514208A (en) * 1974-08-16 1978-06-14 Mannesmann Ag Pipe connections
DE3629166A1 (de) * 1986-08-27 1988-03-10 Klinger Ag Verfahren zum herstellen eines adapters zum gasdichten verbinden eines kunststoffrohres mit einem metallrohr
EP0378406A2 (fr) * 1989-01-11 1990-07-18 Osaka Gas Co., Ltd. Joint obtenu par électrosoudage et son application dans un distributeur d'eau chaude
WO1995016557A2 (fr) * 1993-12-15 1995-06-22 Tokushu, Kogyo Kabushikigaisha Appareil permettant une fixation par electrofusion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1514208A (en) * 1974-08-16 1978-06-14 Mannesmann Ag Pipe connections
DE3629166A1 (de) * 1986-08-27 1988-03-10 Klinger Ag Verfahren zum herstellen eines adapters zum gasdichten verbinden eines kunststoffrohres mit einem metallrohr
EP0378406A2 (fr) * 1989-01-11 1990-07-18 Osaka Gas Co., Ltd. Joint obtenu par électrosoudage et son application dans un distributeur d'eau chaude
WO1995016557A2 (fr) * 1993-12-15 1995-06-22 Tokushu, Kogyo Kabushikigaisha Appareil permettant une fixation par electrofusion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014001144A1 (fr) * 2012-06-26 2014-01-03 Voss Automotive Gmbh Dispositif de raccordement pour conduites de fluide
CN104412023A (zh) * 2012-06-26 2015-03-11 福士汽车配套部件责任有限公司 用于介质导管的连接装置
JP2015526659A (ja) * 2012-06-26 2015-09-10 フォス・アウトモーティヴ・ゲー・エム・ベー・ハー 媒体導管用の接続装置
US9874300B2 (en) 2012-06-26 2018-01-23 Voss Automotive Gmbh Connecting device for media lines
CN108039537A (zh) * 2018-01-10 2018-05-15 华霆（合肥）动力技术有限公司 复合接头、液冷装置及供电设备
CN108039537B (zh) * 2018-01-10 2024-05-07 华霆（合肥）动力技术有限公司 复合接头、液冷装置及供电设备

Also Published As

Publication number Publication date
GB0400665D0 (en) 2004-02-11

Similar Documents

Publication Publication Date Title
US7758084B2 (en) Connection between a pipe and a wall
RU2187034C2 (ru) Соединение для труб (варианты) и способ его образования (варианты)
CN101730813B (zh) 将多层管接地的方法以及包括多层管的管道
US20070007763A1 (en) Adaptor fitting
RU2368838C2 (ru) Соединительное устройство прежде всего для соединения с силовым замыканием, по меньшей мере, одной детали из многослойного волокнистого материала с другой деталью
EP1872048A1 (fr) Raccord a electrofusion pour tuyau composite
EP2486310B1 (fr) Garniture thermofusible et procédé de fabrication
US9719622B2 (en) Electrofusion fittings and methods
US20060001259A1 (en) Mechanical and coil fusion combination seal
ZA200603874B (en) Connection between a pipe and a wall
EP1388703A1 (fr) Raccord pour un tuyau composite
CN1596352A (zh) 偶接件
WO2005068892A1 (fr) Raccord de tuyauterie plastique/metallique ameliore
KR20030013476A (ko) 플라스틱 코팅 금속 튜브를 사용하여 스핀 용착된 유체커넥터
WO2001092775A1 (fr) Joint de tuyaux
GB2349927A (en) Electrofusion couplings with inner and outer fittings
EP2164695A2 (fr) Raccord d'électrofusion pour tuyau composite
GB2407795A (en) Electrofusion bonding
WO2004079245A1 (fr) Raccords conduit-paroi
WO2015101718A1 (fr) Procédé de mise à la terre de tuyaux à couches multiples et canalisation comprenant des tuyaux à couches multiples
GB2408550A (en) Compression pipe fitting bonded to fibre reinforced plastic chamber
EP2341015A1 (fr) Ensemble de chambre modulaire et procédé de construction d'un tel ensemble

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase