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WO2004031640A1 - Couplage - Google Patents

Couplage Download PDF

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Publication number
WO2004031640A1
WO2004031640A1 PCT/GB2003/004286 GB0304286W WO2004031640A1 WO 2004031640 A1 WO2004031640 A1 WO 2004031640A1 GB 0304286 W GB0304286 W GB 0304286W WO 2004031640 A1 WO2004031640 A1 WO 2004031640A1
Authority
WO
WIPO (PCT)
Prior art keywords
fitting
component
chamber wall
opening
flange
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/GB2003/004286
Other languages
English (en)
Inventor
Christopher Richard Wise
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
Priority to AU2003271895A priority Critical patent/AU2003271895A1/en
Publication of WO2004031640A1 publication Critical patent/WO2004031640A1/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
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint

Definitions

  • pipework running between dispensing pumps and a subterranean fuel storage tank passes into a manhole chamber which is generally situated directly above the manhole lid of the tank.
  • the chamber is normally defined by an upstanding wall which, when viewed from above, can be of an octagonal, circular, square or rectangular shape, and which includes apertures through which respective pipes pass.
  • the type of fittings described in GB 2332255 are reasonably effective when the chamber wall is formed from a type of plastics material such as, for example, plolyethylene (PE) that is heat weldable and which is thus suitable for forming an electrofusion seal.
  • PE plolyethylene
  • many chambers and sumps are constructed from materials such as glass-fiber reinforced plastic (GRP), fibre reinforced plastic (FRP) and steel, where such a seal is not possible.
  • GRP glass-fiber reinforced plastic
  • FRP fibre reinforced plastic
  • steel where such a seal is not possible.
  • a fitting of this type is still to be used then a chemical adhesive must be Used instead of electrofusion. Any adhesive used must have a high chemical "resistance, and must in particular be resistant to a wide variety of hydrocarbon solvents.
  • Adhesive selection therefore presents a real problem and whilst some suitable adhesives are available, these inevitably require the various components to be clamped in place for a considerable period of time until the adhesive cures.
  • One such suitable adhesive is 3M Scotch-Weld (RTM) Structural Plastic Adhesive DP- 8005 or DP-8010.
  • RTM Scotch-Weld
  • DP- 8005 or DP-8010 3M Scotch-Weld
  • a fitting for providing a substantially fluid-tight seal between an opening in a chamber wall and a pipe passing through said opening, said fitting assembly comp ⁇ sing:-
  • a first fitting component to mount to the inner or the outer surface of the chamber wall, having a tubular sleeve adapted to allow the pipe to pass through the sleeve, the first fitting component having a flange or shoulder, a first surface of the flange or shoulder being configured to contact the chamber wall around the opening;
  • a second fitting component to mount to the other of the inner and outer surface of the chamber wall, having a tubular sleeve adapted to allow the pipe to pass through the sleeve and further adapted to pass through the opening in the chamber wall and to inter-fit with the tubular sleeve of the first fitting component, the second fitting component having a flange or shoulder, a first surface of the flange or shoulder being configured to contact the chamber wall around the opening, at least one of the first and the second fitting component further having an energy transfer means incorporated in a mating surface of the tubular sleeve thereof where the tubular sleeve of the first component and the tubular sleeve of the second component inter-fit, said energy transfer means being adapted to heat the mating surface in order to weld the first component to the second component to hold them in place - relative to each other and relative to the opening.
  • the two components can be welded together to hold them in place while the adhesive cures.
  • the tubular sleeve may extend from one or both sides of the flange/ shoulder of the component but preferably the sleeve extends on both sides for the second component and only one side for the first component.
  • the energy transfer means comprises a heating wire which is embedded within the mating surface.
  • the sleeve is of a substantially circular cross-section, and the flange or shouder projects radially outwardly therefrom.
  • the fitting may further comprise a sealing member or boot adapted to form a fluid tight seal between the tubular sleeve of one of the fitting components and the pipe and which is secured at one end to the tubular sleeve.
  • a first aspect of the present invention there is provided a method of forming a seal between an opening in a chamber wall and a pipe passing through said opening, the method comprising the steps of:
  • a first fitting component to mount to the inner or the outer surface of the chamber wall, having a tubular sleeve adapted to allow the pipe to pass through the sleeve, the first fitting component having a flange or shoulder, a first surface of the flange or shoulder being configured to contact the chamber wall around the opening;
  • a second fitting component to mount to the other of the inner and outer surface of the chamber wall, having a tubular sleeve adapted to allow the pipe to pass through the sleeve and further adapted to pass through the opening in the chamber wall and to inter- fit with the tubular, sleeve of the first fitting component, the second fitting component having a flange or shoulder, a first surface of the flange or shoulder being configured to contact the chamber wall around the opening, at least one of the first and the second fitting component further having an energy transfer means incorporated in a mating surface of the tubular sleeve thereof where the tubular sleeve of the first component and the tubular
  • the method further comprises applying a respective sealing component to seal between each of the fitting components and the pipe, and which suitably comprises a reduction boot.
  • a fitting for providing a substantially fluid-tight : i3eal 'between an opening in a chamber wall and a pipe passing through said opening said fitting comprising:
  • a first fitting component to mount to the inner or the outer surface of the chamber wall around the opening;
  • a second fitting component to mount to the other of the inner and outer surface of the chamber wall around the opening and having a part that passes through the opening in the chamber wall and inter- fits with the first fitting component, an adhesive being applied to one or both of the first fitting component and the second fitting component where they mount to the respective surface of the chamber wall, at least one of the first and the second fitting component further having an energy transfer means incorporated in a mating surface thereof where the first component and the second component inter-fit, said energy transfer means being adapted to heat the mating surface in order to weld the first component to the second component to hold them in place relative to each other and relative to the opening.
  • energy transfer means - a generic term describing any form of energy source. Typically it takes the form of a resistance winding which heats up when an electrical current is passed through it. The term also encompasses other welding techniques including ultrasonic welding and induction welding.
  • the flange any collar suitable for attaching a fitting to a chamber wall.
  • the surface of the flange which contacts the chamber wall is substantially planar.
  • the flange must conform to the profile of the chamber wall around the pipe inlet opening.
  • the flange can adopt any suitable conformation to achieve the necessary contact with a flat or curved surface or even the corner of a container wall.
  • tubular sleeve this term has a very broad meaning. It includes any projection from the flange which substantially encircles a pipe passing through the fitting and which enables a seal to be made between the fitting and the pipe.
  • the flange and sleeve need not be of unitary construction and may, for example, be of two-part threaded construction.
  • Figures 1A and 1 B illustrate plan and elevational views respectively of an underground chamber and sumps associated with three dispensing pump islands;
  • Figures 2A and 2B illustrate side and end views of a first component of the fitting assembly of the present invention
  • Figures 3A and 3B illustrate side and end views of a second component
  • Figure 4 shows the first component and second component in an assembled state around a curved chamber wall (shown in dotted line).
  • FIGS 1A and 1B illustrate an underground chamber 10 associated with an underground fuel storage tank (not shown).
  • the tank typically contains a plurality of compartments containing different fuels to be supplied to dispensing pumps (again not shown).
  • the chamber is of a conventional construction and such chambers are known per se.
  • Fuel from the fuel tanks is contained and distributed in fuel supply pipes 12 which may be flexible, and thus replaceable, or could be rigid and therefore fixed in place. It is also possible that there may be a plurality of fuel supply pipes within one secondary, outer pipe as described in PCT/GB01/00995, the entire text of which is incorporated herein. by reference. It is intended that this text should form an integral part of this disclosure.
  • FIGs 2 and 3 show the main two components of the coupling.
  • the fitting has been designed to fit onto a wall of a substantially circular chamber.
  • a fitting component 20, shown in Figure 2 comprises a substantially cylindrical sleeve 28 designed to fit through a correspondingly sized and shape aperture in a chamber wall (not shown).
  • a radially extending outwardly projecting flange 24 is provided and one surface face 25 of the flange is designed to be a matching mating fit onto the outside of the chamber wall.
  • chamber wall is of substantially circular cross section.
  • the flange can be shaped to conform to any particular chamber wall profile.
  • an adhesive is applied to surface 25, after thoroughly cleaning all surfaces, and the sleeve is passed through the aperture in the chamber wall until the flange surface 25 and the chamber wall make good contact.
  • the other component 30 of the fitting is shown in Figure 3.
  • This component comprises a sleeve portion 32, having a larger diameter than sleeve 28 such that the internal diameter surface 35 of sleeve 32 and the external diameter surface of sleeve 28 are a tight sliding fit.
  • Sleeve 32 carries at or near one end a flange 34, complementary in shape to the internal surface of the chamber wall.
  • Figure 4 illustrates the assembled fitting without the rubber boots being shown, but with the chamber wall 100 shown in dotted line.
  • the present invention provides apparatus and a method for joining a pipe to a wall, where the wall is made from a material which cannot readily form an electrofusion seal.
  • the present invention will be applicable in chamber or other walls made from metals such as steel, glass reinforced or other reinforced plastics, other plastics material or even concrete.
  • This is also the first application known to the applicant where a permanent clamp is formed by the electrofusion coupling of two separate fittings.
  • a wide range of adhesives both known and yet to be discovered, can be used in this application. Just one example is the range of Scotch-weld adhesives produced by 3M and which includes DP-8008 and DP-8010. The choice of preferred adhesive will be determined by the materials or adhesive specialist.

Landscapes

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

Abstract

L'invention concerne un raccord formant un joint sensiblement étanche entre une ouverture ménagée dans une paroi de chambre (100) et un tuyau traversant ladite ouverture. Ce raccord comprend : 1) un premier élément de raccord (20) à monter sur la surface interne ou externe de la paroi de chambre, ayant un manchon tubulaire (28) conçu pour laisser passer le tuyau à travers le manchon, le premier élément de raccord ayant un rebord ou un épaulement (24), une première surface (25) du rebord ou de l'épaulement étant configurée de manière à mettre en contact la paroi de chambre autour de l'ouverture ; 2) un second élément de raccord (30) à monter sur l'autre des surfaces interne et externe de la paroi de chambre, ayant un manchon tubulaire (32) conçu pour laisser passer le tuyau à travers le manchon, pour traverser l'ouverture ménagée dans la paroi de chambre et pour s'emboîter dans le manchon tubulaire du premier élément de raccord. Le second élément de raccord comprend un rebord ou épaulement (34), une première surface (36) du rebord ou de l'épaulement étant conçue pour venir en contact avec la paroi de chambre autour de l'ouverture. Au moins un des premier et second éléments de raccord (20, 30) comportent des moyens de transfert d'énergie (38) intégrés dans une surface de contact du manchon tubulaire (28, 32) où le manchon tubulaire du premier élément et le manchon tubulaire (32) du second élément s'emboîtent. Ces moyens de transfert d'énergie sont conçus pour chauffer la surface de contact de façon à souder le premier composant au second composant afin de les fixer l'un par rapport à l'autre et par rapport à l'ouverture.
PCT/GB2003/004286 2002-10-04 2003-10-06 Couplage Ceased WO2004031640A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003271895A AU2003271895A1 (en) 2002-10-04 2003-10-06 Coupling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0223054A GB0223054D0 (en) 2002-10-04 2002-10-04 Adhesive coupling
GB0223054.8 2002-10-04

Publications (1)

Publication Number Publication Date
WO2004031640A1 true WO2004031640A1 (fr) 2004-04-15

Family

ID=9945324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/004286 Ceased WO2004031640A1 (fr) 2002-10-04 2003-10-06 Couplage

Country Status (3)

Country Link
AU (1) AU2003271895A1 (fr)
GB (2) GB0223054D0 (fr)
WO (1) WO2004031640A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005052428A1 (fr) * 2003-11-25 2005-06-09 Petrotechnik Limited Raccord entre un tuyau et une paroi
US7854449B2 (en) 2005-03-09 2010-12-21 Zcl Composites Inc. Composite laminated sheet material for containment sumps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2332255A (en) 1997-12-10 1999-06-16 Petrotechnik Ltd Sealing a pipe to a wall
WO2001066993A1 (fr) 2000-03-08 2001-09-13 Petro Technik Limited Systeme d'enveloppement ameliore

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5655564A (en) * 1995-02-17 1997-08-12 Gavin; Norman W. Septic system plastic distribution box with integrally fastened seal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2332255A (en) 1997-12-10 1999-06-16 Petrotechnik Ltd Sealing a pipe to a wall
WO2001066993A1 (fr) 2000-03-08 2001-09-13 Petro Technik Limited Systeme d'enveloppement ameliore

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005052428A1 (fr) * 2003-11-25 2005-06-09 Petrotechnik Limited Raccord entre un tuyau et une paroi
JP2007517167A (ja) * 2003-11-25 2007-06-28 ペトロテクニク リミテッド パイプと壁の間の連結
EP2119949A3 (fr) * 2003-11-25 2010-06-23 Petrotechnik Limited Raccord entre un tuyau et un mur
US7758084B2 (en) 2003-11-25 2010-07-20 Petrotechnik Limited Connection between a pipe and a wall
US7854449B2 (en) 2005-03-09 2010-12-21 Zcl Composites Inc. Composite laminated sheet material for containment sumps

Also Published As

Publication number Publication date
AU2003271895A1 (en) 2004-04-23
GB0323360D0 (en) 2003-11-05
GB0223054D0 (en) 2002-11-13
GB2395242B (en) 2006-01-04
GB2395242A (en) 2004-05-19

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