CN1393652A - Electrothermal fusion welding and sealing of plastic pipe jointer and its technology - Google Patents

Electrothermal fusion welding and sealing of plastic pipe jointer and its technology Download PDF

Info

Publication number
CN1393652A
CN1393652A CN01119913A CN01119913A CN1393652A CN 1393652 A CN1393652 A CN 1393652A CN 01119913 A CN01119913 A CN 01119913A CN 01119913 A CN01119913 A CN 01119913A CN 1393652 A CN1393652 A CN 1393652A
Authority
CN
China
Prior art keywords
sealing
fusion welding
plastic pipe
resistance wire
pipe jointer
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.)
Pending
Application number
CN01119913A
Other languages
Chinese (zh)
Inventor
许炜昌
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.)
PINGJIANG ELECTROTHERMAL APPLIANCE FACTORY HEXI DISTRICT TIANJIN CITY
Original Assignee
PINGJIANG ELECTROTHERMAL APPLIANCE FACTORY HEXI DISTRICT TIANJIN CITY
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 PINGJIANG ELECTROTHERMAL APPLIANCE FACTORY HEXI DISTRICT TIANJIN CITY filed Critical PINGJIANG ELECTROTHERMAL APPLIANCE FACTORY HEXI DISTRICT TIANJIN CITY
Priority to CN01119913A priority Critical patent/CN1393652A/en
Publication of CN1393652A publication Critical patent/CN1393652A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • B29C65/3428—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 said at least a single wire having a waveform, e.g. a sinusoidal form
    • 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"
    • B29C65/3472—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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B29C66/496—Internally supporting the, e.g. tubular, article during joining using a support which remains in the joined object
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • 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
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91653—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the voltage, i.e. the electric potential difference or electric tension
    • 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
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

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

Abstract

An electrothermic fusion welding technology for sealing the joint of plastic pipes features that a high-density polyethylene pipe segment with thin wall is used as joint and a resistance wire is used as exothermal body and is wound along the internal surface of the joint pipe segment. After a 220-V voltage is applied to it for 5-10 min until the pipe segment is melted and then it is cooled, and the fusion welding is finished. Its advantages are high connection firmness and sealing performance, and high mechanical performance.

Description

Electrothermal fusion welding and sealing of plastic pipe jointer and new process
The invention belongs to the electric heating welding process, particularly a kind of electrothermal fusion welding and sealing of plastic pipe jointer and new process.
The present invention in the past, the plastic pipe union that is used for underground heat, oil, the connection of thermal insulation pipe tube and tube, after adopting the plastic welding gun welding mostly, roll the method for shrink belt outward: in addition, also have and adopt with the bonding method of pitch, it is big that said method all exists difficulty of construction, and earth volume is big, the cost height, welding back stretching resistance, heat resistanceheat resistant are risen, the defective of shrinkage dynamics difference.
The purpose of this invention is to provide a kind of easy construction, cost is low, and hot joining is firm, and the joint tighness after the welding is good, and electrothermal fusion welding and sealing of plastic pipe jointer that stretching resistance is strong and new process are to overcome the deficiency in the prior art.
The objective of the invention is to finish: a kind of electrothermal fusion welding and sealing of plastic pipe jointer and new process with following technology, it is characterized in that, adopting high-density polyethylene material sheet tube coupling is hot melting connector, resistance wire is a heater, the resistance wire of the snakelike spring of coiled is distributed in the tube coupling inner periphery, and the termination that makes resistance wire is stretched out by axial outward edge and is formed the series circuit electrode, this technology is: during welding, the tube coupling of hot melting connector is banded in the joint of tube and tube, then electrode is connected to hot compress and establishes with on the power supply.Give electricity, treat that the tube coupling fusing of hot melting connector can be cut off the power supply, after the outage again cooling number minute get final product.
Above-mentioned resistance wire can adopt nichrome wire or Aludirome silk and new constantan.
The above-mentioned resistance wire that is distributed in the tube coupling inner periphery can be arranged two in parallel, and parallel distance is 45～50 millimeters.
Above-mentioned hot compress is established with power supply can rise to 220 volts by 36 volts, and the hot compress time of establishing is 5～15 minutes, and temperature rises to more than 200 °.
Above-mentioned resistance wire heater power is by 300 watts～3000 watts, maximum current 15A, service voltage 220V.
The advantage that the present invention embodies is: it is hot melting connector that the present invention adopts the high-density polyethylene material, and resistance wire is that heater constitutes electric heating sealing plastic pipe union, adopts the electric smelting new process in addition, makes the present invention have the technology uniqueness, and good mechanical property is corrosion-resistant.Easy construction, hot joining is firm, good airproof performance, stretching resistance is strong, and labor and material saving is much better than the method for construction of Plastic Welding and shrink belt.Through evidence: after the electric heating sealing, pulling force surpasses the pulling force of parent itself, is current oil pipeline, heat supply pipeline, post and telecommunications ground pipe, is incubated the optimal jointing new process of pipe network.
Specify the present invention below in conjunction with drawings and Examples.
Accompanying drawing 1 is the electrothermal fusion welding and sealing of plastic pipe jointer structural representation.
Accompanying drawing 2 adopts electric heating melting welding user mode figure for electrothermal fusion welding and sealing of plastic pipe jointer.
Embodiment: as shown in Figure 1, a kind of electrothermal fusion welding and sealing of plastic pipe jointer and new process, it is characterized in that, adopting high-density polyethylene material sheet tube coupling is hot melting connector 1, adopting nichrome wire or Aludirome silk and the arbitrary resistance wire of new constantan is heater 2, be to be distributed in the tube coupling inner periphery behind two snakelike springs of resistance wire coiled of 50 millimeters with the spacing that be arranged in parallel, and the termination of resistance wire is stretched out by axial outward edge and form the series circuit hot compress and establish with electrode 3.This technology is: as shown in Figure 2, during welding, the tube coupling of hot melting connector 1 is banded in the joint of tube and tube, then hot compress is established to be connected on 220 volts of power supplys or to be connected to hot compress and establish voltage and rise on 220 volts the power supply by 36 volts with electrode 3, give electricity 5～10 minutes, temperature rises to more than 200 °, treats can cut off the power supply after the tube coupling fusing of hot melting connector, cools off after the outage to take off in 10～20 minutes again and ties up securing means and get final product.

Claims (5)

1, a kind of electrothermal fusion welding and sealing of plastic pipe jointer and new process, it is characterized in that, adopting high-density polyethylene material sheet tube coupling is hot melting connector, resistance wire is a heater, to be distributed in the tube coupling inner periphery behind the snakelike spring of resistance wire coiled, and the termination that makes resistance wire is stretched out by axial outward edge and is formed the series circuit hot compress and establishes and use electrode, this technology is: during welding, the tube coupling of hot melting connector is banded in the joint of tube and tube, then electrode being connected to hot compress establishes with on the power supply, give electricity, treat that the tube coupling fusing of hot melting connector can be cut off the power supply, after the outage again cooling number minute get final product.
2, electrothermal fusion welding and sealing of plastic pipe jointer according to claim 1 and new process is characterized in that, above-mentioned static wire can adopt nichrome wire or Aludirome silk and new constantan.
3, electrothermal fusion welding and sealing of plastic pipe jointer according to claim 1 and 2 and new process is characterized in that, the above-mentioned resistance wire that is distributed in the tube coupling inner periphery can be arranged two in parallel, and parallel distance is 45～50 millimeters.
4, electrothermal fusion welding and sealing of plastic pipe jointer according to claim 1 and new process is characterized in that, power supply is established in above-mentioned hot compress can rise to 220 volts by 36 volts, and the hot compress time of establishing is 5～15 minutes, and temperature rises to more than 200 °.
5, electrothermal fusion welding and sealing of plastic pipe jointer according to claim 1 and new process is characterized in that, above-mentioned resistance wire heater power is by 300 watts～3000 watts, maximum current 15A, and general service voltage is 220V.
CN01119913A 2001-06-29 2001-06-29 Electrothermal fusion welding and sealing of plastic pipe jointer and its technology Pending CN1393652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN01119913A CN1393652A (en) 2001-06-29 2001-06-29 Electrothermal fusion welding and sealing of plastic pipe jointer and its technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN01119913A CN1393652A (en) 2001-06-29 2001-06-29 Electrothermal fusion welding and sealing of plastic pipe jointer and its technology

Publications (1)

Publication Number Publication Date
CN1393652A true CN1393652A (en) 2003-01-29

Family

ID=4663800

Family Applications (1)

Application Number Title Priority Date Filing Date
CN01119913A Pending CN1393652A (en) 2001-06-29 2001-06-29 Electrothermal fusion welding and sealing of plastic pipe jointer and its technology

Country Status (1)

Country Link
CN (1) CN1393652A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103282709A (en) * 2011-01-04 2013-09-04 Tsc创新有限公司 Method and device for the welding of pipes
CN107116803A (en) * 2017-04-28 2017-09-01 中国水利水电第七工程局有限公司 A kind of polyethylene plastic steel wound drain pipe composite joint construction technology
CN109353006A (en) * 2018-10-25 2019-02-19 安庆市悦发管业有限公司 A kind of MPP power cable protecting pipe weld protective device
CN111271927A (en) * 2020-03-16 2020-06-12 中建环能建筑工程有限公司 Automatic cooling system of cable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103282709A (en) * 2011-01-04 2013-09-04 Tsc创新有限公司 Method and device for the welding of pipes
CN103282709B (en) * 2011-01-04 2015-08-05 Tsc创新有限公司 For the method and apparatus of the welding of pipeline
CN107116803A (en) * 2017-04-28 2017-09-01 中国水利水电第七工程局有限公司 A kind of polyethylene plastic steel wound drain pipe composite joint construction technology
CN109353006A (en) * 2018-10-25 2019-02-19 安庆市悦发管业有限公司 A kind of MPP power cable protecting pipe weld protective device
CN109353006B (en) * 2018-10-25 2020-04-28 安庆市悦发管业有限公司 MPP power cable protection tube connects welding protection device
CN111271927A (en) * 2020-03-16 2020-06-12 中建环能建筑工程有限公司 Automatic cooling system of cable

Similar Documents

Publication Publication Date Title
JP2009526171A (en) Electric fusion piping device having a pressurizing structure with threads
CN1393652A (en) Electrothermal fusion welding and sealing of plastic pipe jointer and its technology
KR100912672B1 (en) Electro-fusion connecting sheet for connecting plastic pipes
CN203857154U (en) Connecting structure for electric hot melting socket steel belt enhanced polyethylene helical corrugated pipe
CN207022235U (en) A kind of energy-saving electromagnetic heating equipment
CN205522494U (en) Hot melt connecting device of plastic tubing
CN202171085U (en) Electrofusion connector for helical bellows
CN104640246A (en) Safe energy-saving heater structure for movable air conditioner
CN206812454U (en) A kind of plastic conduit installation thermal molten welder
CN2769659Y (en) Electric heating fusion welding sealing plastic pipe joint
CN208900945U (en) A kind of novel pipeline repaired mouth device
CN201950819U (en) Hot melt pipe fitting connecting piece
CN214889462U (en) Building water pipe connecting device
CN200977726Y (en) Welding and heating device metal plastic composite tube
CN101173731A (en) Pipe connecting method
KR101038758B1 (en) Apparatus and Method for Connecting Plastic Pipes
CN101352922A (en) High voltage polyolefin plastic electrofusion pipe fitting
CN209399019U (en) A kind of pipe joint electric heating melting set
CN207207155U (en) A kind of construction site PPC water pipe fusion splicers
CN201772182U (en) Electric melting connection pipe fitting for small-bore plastic-steel water discharge pipe
CN113997577B (en) Electric fusion welding machine and use method thereof
CN204334971U (en) Safe, the energy-saving heater structure of movable air conditioner
CN205026288U (en) A electric smelting pipe fitting for biaxial stretching PE, PPR pipeline
CN1453118A (en) High-frequency induction process of heating and welding plastic pipes
CN209659651U (en) Heating tube and electromagnetic induction heater

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication