GB2468916A - Electrofusion joint in device detection system - Google Patents

Electrofusion joint in device detection system Download PDF

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Publication number
GB2468916A
GB2468916A GB0905303A GB0905303A GB2468916A GB 2468916 A GB2468916 A GB 2468916A GB 0905303 A GB0905303 A GB 0905303A GB 0905303 A GB0905303 A GB 0905303A GB 2468916 A GB2468916 A GB 2468916A
Authority
GB
United Kingdom
Prior art keywords
restraining
electrofusion
ecu
clamping
welding
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.)
Granted
Application number
GB0905303A
Other versions
GB0905303D0 (en
GB2468916B (en
Inventor
Kevin Mark Wilkinson
Graham Joseph Tannant
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.)
Advance Technical Systems Ltd
Original Assignee
Advance Technical Systems 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 Advance Technical Systems Ltd filed Critical Advance Technical Systems Ltd
Priority to GB0905303.4A priority Critical patent/GB2468916B/en
Publication of GB0905303D0 publication Critical patent/GB0905303D0/en
Publication of GB2468916A publication Critical patent/GB2468916A/en
Application granted granted Critical
Publication of GB2468916B publication Critical patent/GB2468916B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • 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"
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • 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
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/87—Auxiliary operations or devices
    • B29C66/872—Starting or stopping procedures
    • 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
    • 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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
    • B29C66/9672—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data inputs, e.g. involving barcodes, RFID tags

Abstract

An automatic detection system that ensures automatic association (1) of a restraining device and ECU (2 and 3) that can prevent poor practice when welding any Electrofusion joint of any nature by detecting the restraining/clamping device is in the correct place for correct welding, by applying a voltage (for example) (Sheet 1) or sending or receiving a signal by any means from the device to the ECU and checking the associated restraining /clamping device is in evidence (Sheet 2) and either allowing the weld to commence or disabling the possibility of welding until the device(s) are associated (4) offering correct restraining/clamping/electrofusion procedures to the work being carried out, and confidence in the welded joint, operator control and asset owner(s).

Description

PATENT APPLICATION
TITLE: Electrofusion Joint in Device Detection System (EJIDDS)
BACKGROUND:
Plastic pipes are predominately joined together by the Electrosfusion process using plastic Electrofusion fittings which can be couplers, tee pieces, tapping-tee's to give some examples (these are a few of the variants that are available and they come in many size diameters from 16mm through to 1200mm) which are charged by an Electrofusion Control Unit (ECU) with a voltage to heat the internal coil up (8V to 80V and greater in some instances) and create a weld-melt inside the fitting with the pipe(s) inserted, or placed upon, creating a welded joint. The fittings should always be clamped or held static by some form of mechanical device to ensure the fitting(s) do not move when the Electrofusion process is taking place, and afterwards when the Electrofusion welded fittings are cooling down for the prescribed time. Currently there is no way of proving that the pipes being electrofusion welded have been mechanically clamped or held in position during the process of welding or cooling, and there is evidence that a large percentage of welded joint failures are due to the failure of operators to use any of the mechanical clamping/restraining devices available in the market to restrain the pipe.
STATEMENT OF INVENTION:
To overcome the problem of poor installation techniques, and notably the lack of using any proprietary mechanical restraining devices, this invention forces the operator of the electrofusion welding process to restrain the fitting(s) before welding with a restraining device similar to those currently available in the market place (alignment clamps for example) which is electronically, either wired or wirelessly controlled and automatically detected by the ECU to be present so ensuring that the operator cannot weld any electrofusion joint/fitting unless the clamp/restraining device is in place with the fitting positioned within the restraining devices pre-set field(s) of operation. Failure to use the restraining device/clamp for example in its proper mode of operation will disable the welding operation by use of proprietary software built in to the ECU and/or other device for controlling the weld, as the weld will not start in which case the operator is then forced to use the equipment in its proper and intended fashion.
ADVANTAGES: 1: The operator of the ECU can only weld plastic pies and fittings in the correct and best practice manner. It can be possible within the invention to have the ECU not start the weld at all because the restraining device is not detected, or record by any electronic means that the correct clamping/restraining device(s) were not detected/present at the start of the Electrofusion welding process which will show on the data-log of the ECU if available as an option in the ECU. (see 3 below) 2: The contractor(s) using the equipment can show that they have equipment that enforces best practice welding techniques without the need for supervision as the invention is an automatic detection device.
3: The contractors customer/owner of the asset/pipe system can easily check that the welds carried out have been correctly positioned and restrained by accessing the data-logging software within the ECU which will show the welds carried out and whether or not the pipe and fitting was clamped/restrained by the automatic detection feature of the invention.
4: The invention and associated software are designed in such a way that it can be fitted to any size of re-rounding/restraining/clamping device or other devices that should be used to ensure Electrofusion welding of plastic pipe and fittings is carried Out in the best practicable way as laid down by the manufacturers of both to ensure safety and longevity of the assets being installed.
DRAWINGS: SHEET 1: Shows (1) Electronic Welding unit (ECU) attached by ECU device wire (6) to restraining/Clamping device with associated electronics for detection mounted on/in/around Device(S) with pipes (3) and fitting (4) restrained in the restraining/clamping device (5) SHEET 2: Shows (1) Electronic Welding unit (ECU) attached by ECU device wire (6) to restraining/Clamping device with associated electronics for detection mounted on/in/around Device(S) with pipes (3) and fitting (4) restrained in the restraining/clamping device (5)

Claims (1)

  1. CLAIMS: 1: An invention to physically (by automatic detection) and easily ensure Electrofusion plastic fittings of any type/style/size/manufacturer/colour or material(s) are correctly restrained before Electrofusion welding can commence proving competent work has been carried out to best practice procedures for clamping/restraining pipes and fittings during the Electrofusion welding process and improve weld reliability.
    2: A device/invention or software control method that prevents the operator of the ECU commencing any welded joint by automatically detecting at the ECU that the intended weld is correctly restrained/clamped in an associated restraining/clamping device by electronic means, whether by wired or wireless connection.
    3: A device/invention designed to fit within (or otherwise attached internally or externally) the restraining clamp/alignment and/or ECU and/or other equipment for holding an Electrofusion fitting and pipes and being part of the automatically detecting association to show that the restraining clamp/ device is present.
    4: An automatic detection system that can be a wireless and/or wired or otherwise connected device and or part of such, that forms an integral part of a restraining/re-rounding/clamping/aligning/pressured by hydraulic power or otherwise power device for Electrofusion fittings of any nature, that only allows an Electrofusion joint to be carried out when the automatic detection system has verified that such is both present and in the correct orientation.
GB0905303.4A 2009-03-28 2009-03-28 Electrofusion joint in device detection system (EJIDDS) Active GB2468916B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0905303.4A GB2468916B (en) 2009-03-28 2009-03-28 Electrofusion joint in device detection system (EJIDDS)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0905303.4A GB2468916B (en) 2009-03-28 2009-03-28 Electrofusion joint in device detection system (EJIDDS)

Publications (3)

Publication Number Publication Date
GB0905303D0 GB0905303D0 (en) 2009-05-13
GB2468916A true GB2468916A (en) 2010-09-29
GB2468916B GB2468916B (en) 2013-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB0905303.4A Active GB2468916B (en) 2009-03-28 2009-03-28 Electrofusion joint in device detection system (EJIDDS)

Country Status (1)

Country Link
GB (1) GB2468916B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011117652A3 (en) * 2010-03-25 2012-03-22 Electro Services Limited Electrofusion clamp with means for detecting if the clamp is in the open or closed position
GB2517772A (en) * 2013-09-02 2015-03-04 Fullflow Group Ltd Equipment for use in plastics pipe welding
CN106426951A (en) * 2016-10-10 2017-02-22 武汉金牛经济发展有限公司 Automatic plastic pipe welding equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282638A (en) * 1993-10-11 1995-04-12 Haxey Eng Ltd A clamp
JPH0942554A (en) * 1995-07-25 1997-02-14 Retsukisu Kogyo Kk Clamp for electrofusion joint
JPH10113993A (en) * 1996-10-11 1998-05-06 T F T:Kk Fixing jig for connecting pipe
JPH10230548A (en) * 1997-02-19 1998-09-02 Matsuzaka Tekkosho:Kk Clamp device for electrofusion joint
GB2361262A (en) * 2000-04-13 2001-10-17 Glynwed Pipe Systems Ltd Clamping unit for welding operations in a trench and having pivotally mounted clamping arms
JP2007285348A (en) * 2006-04-13 2007-11-01 Sekisui Chem Co Ltd Clamp device and auxiliary member for clamp device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282638A (en) * 1993-10-11 1995-04-12 Haxey Eng Ltd A clamp
JPH0942554A (en) * 1995-07-25 1997-02-14 Retsukisu Kogyo Kk Clamp for electrofusion joint
JPH10113993A (en) * 1996-10-11 1998-05-06 T F T:Kk Fixing jig for connecting pipe
JPH10230548A (en) * 1997-02-19 1998-09-02 Matsuzaka Tekkosho:Kk Clamp device for electrofusion joint
GB2361262A (en) * 2000-04-13 2001-10-17 Glynwed Pipe Systems Ltd Clamping unit for welding operations in a trench and having pivotally mounted clamping arms
JP2007285348A (en) * 2006-04-13 2007-11-01 Sekisui Chem Co Ltd Clamp device and auxiliary member for clamp device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011117652A3 (en) * 2010-03-25 2012-03-22 Electro Services Limited Electrofusion clamp with means for detecting if the clamp is in the open or closed position
GB2517772A (en) * 2013-09-02 2015-03-04 Fullflow Group Ltd Equipment for use in plastics pipe welding
GB2517772B (en) * 2013-09-02 2016-06-08 Fullflow Group Ltd Equipment for use in plastics pipe welding
CN106426951A (en) * 2016-10-10 2017-02-22 武汉金牛经济发展有限公司 Automatic plastic pipe welding equipment

Also Published As

Publication number Publication date
GB0905303D0 (en) 2009-05-13
GB2468916B (en) 2013-07-03

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