CN109084111B - Polyethylene composite pipe connection structure - Google Patents
Polyethylene composite pipe connection structure Download PDFInfo
- Publication number
- CN109084111B CN109084111B CN201811278896.4A CN201811278896A CN109084111B CN 109084111 B CN109084111 B CN 109084111B CN 201811278896 A CN201811278896 A CN 201811278896A CN 109084111 B CN109084111 B CN 109084111B
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- China
- Prior art keywords
- ring
- groove
- composite pipe
- polyethylene composite
- pipe
- 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.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 24
- -1 Polyethylene Polymers 0.000 title claims abstract description 22
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims description 17
- 230000007423 decrease Effects 0.000 claims description 5
- 230000008018 melting Effects 0.000 abstract description 10
- 238000002844 melting Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Sleeves (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a polyethylene composite pipe connecting structure, which comprises a connecting pipe and a polyethylene composite pipe, wherein heating resistance wires are respectively arranged on the inner walls of two ends of the connecting pipe, the heating resistance wires are connected with electric welding wire posts positioned outside the connecting pipe, T-shaped limiting rings are arranged between the two groups of heating resistance wires, the T-shaped limiting rings and the connecting pipe form two limiting grooves with opposite opening directions, and rubber sealing rings are arranged in the U-shaped limiting grooves. Through double matching of the electric melting and the rubber ring, the firmness and the tightness of connection between pipelines are enhanced.
Description
Technical Field
The invention relates to a connecting piece, in particular to a polyethylene composite pipe connecting structure.
Background
The polyethylene composite pipe is polymerized by monomer ethylene, and polyethylene with different densities can be obtained due to different polymerization reaction conditions such as pressure, temperature and the like during polymerization. When processing PE pipes of different types, resin brands are selected according to different application conditions, and meanwhile, requirements on an extruder and a die are different, so that the performances of the obtained PE composite pipe are naturally different. The good pipeline has good economical efficiency, and has a series of advantages of stable and reliable interface, impact resistance, cracking resistance, aging resistance, corrosion resistance and the like, so that the pipeline is widely applied in actual life, and a connecting piece for a polyethylene composite pipe is very important.
Disclosure of Invention
The invention aims to provide a polyethylene composite pipe connecting structure, which solves the problems that the existing pipeline is easy to fall off and easy to axially displace only by using a sealing ring interface.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a compound union coupling of polyethylene, includes connecting pipe and the compound pipe of polyethylene, the inner wall at connecting pipe both ends is provided with the resistance wire that generates heat respectively, the resistance wire that generates heat is connected with the electric welding terminal that is located outside the connecting pipe, be provided with T shape spacing collar between two sets of resistance wires that generate heat, T shape spacing collar constitutes the spacing groove that two opening directions are opposite with the connecting pipe, be provided with rubber seal in the spacing groove of U-shaped. Through double matching of the electric melting and the rubber ring, the firmness and the tightness of connection between pipelines are enhanced.
Preferably, the T-shaped limit ring and the connecting pipe are integrally formed, so that the firmness of the T-shaped limit ring and the connecting pipe is improved.
Preferably, the rubber sealing ring is a water-swelling rubber ring, so that the sealing performance is better.
Preferably, the width of the limiting groove is gradually reduced from the groove bottom to the groove opening, the groove opening has a certain clamping effect on the tail end of the composite pipe, the clamping effect has a component force pushing the tail end of the composite pipe into the limiting groove, and the axial displacement is avoided to a certain extent.
Preferably, one side of the rubber sealing ring, which is close to the opening of the limiting groove, is provided with two extrusion rings, and the two extrusion rings are respectively arranged along the groove wall of the limiting groove.
The tail end of the composite pipe is positioned between the two extrusion rings, so that the sealing effect is enhanced.
Preferably, the width of the extrusion ring gradually decreases along the direction approaching to the opening of the limit groove.
The guiding function is achieved, and the obstruction of the extrusion ring to the composite pipe when the pipe wall of the composite pipe stretches into the space between the two extrusion rings is reduced.
Preferably, a propping ring is arranged in the limiting groove along the middle of the groove bottom.
The support ring has extremely important effect, when the pipe wall of the composite pipe stretches into the space between the two extrusion rings, the extrusion rings can give the rubber sealing ring a force towards the bottom of the limiting groove, and the sealing ring can generate a restoring force under the elastic effect, so that the sealing ring and the composite pipe can be sealed, and the rubber ring cannot bear excessive pressure for a long time so as to deform or reduce the elastic force, thereby prolonging the service life of the connecting piece.
Preferably, the width of the abutment ring gradually decreases along the direction approaching the opening of the limit groove.
The polyethylene composite pipe matched with the polyethylene composite pipe connecting piece is provided with a connecting ring at least at one end, and the connecting ring is positioned in the U-shaped limit groove and is matched with the size and shape of the limit groove.
The connecting ring can be integrated into one piece with the compound pipe, stretches into the spacing groove and along the direction of keeping away from the tank bottom, and thickness reduces gradually, and the spacing groove mutually support, and the spacing groove plays the effect of centre gripping connecting ring, reduces the axial displacement of compound pipe to a certain extent simultaneously.
Preferably, the end face of the connecting ring is provided with a pressurizing groove in the circumferential direction, and the width of the pressurizing groove from the groove bottom to the notch is gradually increased. The shape of the pressurizing groove can be matched with the bottom ring, so that the sealing ring between the pressurizing groove and the bottom ring is tightly attached to the pressurizing groove and the bottom ring, in addition, the sealing ring is in self elasticity, and the outer ring and the inner ring have elasticity close to the connecting ring, so that the sealing performance between the two is better.
Compared with the prior art, the invention has the beneficial effects that at least one of the following is adopted:
The limit in the connecting pipe is T-shaped, and two water-swelling rubber rings are embedded in T-shaped openings on two sides of the limit. The connecting piece adopts double sealing, including hot melt sealing and rubber ring sealing, thereby fundamentally preventing the penetration force of water pressure on the pipe wall and the pipe fitting and the influence of direct contact of steel wires and liquid on water and liquid. The rubber ring connection and electric melting connection process is combined, and the pipe fittings are welded into a whole by electric melting, so that the defects of easiness in falling off, low sedimentation load, easiness in axial displacement, poor water-resistant thrust and low bearing pressure of a single rubber ring connector are overcome.
The outside combines the electric hot melting chain to solve the influence of complex soil environment on the service life of the rubber ring. The double water-swelling rubber ring overcomes the defect that the common electric hot melting is easy to cause local virtual melting. The rubber ring and the electric melting sealing measures are combined, so that stronger performance complementation is achieved, the defects of the rubber ring and the electric melting sealing measures are overcome, and the interface safety of a pipeline system is greatly improved by matching with the anti-displacement safety limit of a brand new design.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the limiting groove and the sealing ring of the present invention.
FIG. 3 is a schematic structural view of a composite tube according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1:
The embodiment provides a polyethylene composite pipe connection structure, including connecting pipe 1, the inner wall at connecting pipe 1 both ends is provided with heating resistor wire 4 respectively, heating resistor wire 4 is connected with the electric welding terminal 41 that is located the connecting pipe 1 outside, be provided with T shape spacing collar 2 between two sets of heating resistor wires 4, T shape spacing collar 2 constitutes spacing groove 5 that two opening directions are opposite with connecting pipe 1, be provided with rubber seal 3 in the spacing groove 5 of U-shaped. Through double matching of the electric melting and the rubber ring, the firmness and the tightness of connection between pipelines are enhanced.
Example 2:
This embodiment further defines, on the basis of embodiment 1: the T-shaped limit ring 2 and the connecting pipe 1 are integrally formed, so that the firmness of the T-shaped limit ring and the connecting pipe is improved.
Example 3:
This embodiment further defines, on the basis of embodiment 1: the rubber sealing ring 3 is a water-swelling rubber ring, and has better tightness.
Example 4:
This embodiment further defines, on the basis of embodiment 1: the width of the limiting groove 5 is gradually reduced from the groove bottom to the groove opening, the groove opening has a certain clamping effect on the tail end of the composite pipe, the clamping effect has a component force pushing the tail end of the composite pipe into the limiting groove 5, and the occurrence of axial displacement is avoided to a certain extent.
Example 5:
This embodiment further defines, on the basis of embodiment 1: one side of the rubber sealing ring 3, which is close to the opening of the limit groove 5, is provided with two extrusion rings 31, and the two extrusion rings 31 are respectively arranged along the groove wall of the limit groove 5.
The end of the composite tube is located between two squeeze rings 31 to enhance the sealing effect.
Example 6:
this embodiment further defines, on the basis of embodiment 5: the width of the extrusion ring 31 gradually decreases along the direction approaching the opening of the limit groove 5.
Plays a role of guiding, and reduces the obstruction of the extrusion ring 31 to the composite pipe when the pipe wall of the composite pipe stretches into the space between the two extrusion rings 31.
Example 7:
this embodiment further defines, on the basis of embodiment 1: an abutting ring 11 is arranged in the limiting groove 5 along the middle of the groove bottom.
The supporting ring 11 has extremely important function, when the pipe wall of the composite pipe stretches into the space between the two extrusion rings 31, the extrusion rings 31 can provide a force for the rubber sealing ring 3 towards the bottom of the limiting groove 5, and the sealing ring 3 can generate a restoring force under the elastic function, so that the sealing ring 3 and the composite pipe can be sealed, and the rubber ring cannot bear excessive pressure for a long time so as to deform or reduce the elastic force, thereby prolonging the service life of the connecting piece.
Example 8:
This embodiment further defines, on the basis of embodiment 7: the width of the supporting ring 11 gradually decreases along the direction approaching to the opening of the limit groove 5.
Example 9:
The embodiment provides a polyethylene composite pipe matched with the polyethylene composite pipe connecting piece, at least one end of the polyethylene composite pipe is provided with a connecting ring 61, and the connecting ring 61 is positioned in the U-shaped limit groove 5 and is matched with the size and the shape of the limit groove 5.
The connecting ring 61 can be integrally formed with the composite pipe, stretches into the limiting groove 5 and gradually reduces in thickness along the direction away from the groove bottom, and is matched with the limiting groove 5, the limiting groove 5 plays a role in clamping the connecting ring 61, and meanwhile axial displacement of the composite pipe is reduced to a certain extent.
Example 10:
This embodiment further defines, on the basis of embodiment 9: the end face of the connection ring 61 is provided with a pressing groove 62 in the circumferential direction, and the width of the pressing groove 62 gradually increases from the groove bottom to the notch. The shape of the pressing groove 62 can be matched with the supporting ring 11, so that the sealing ring 3 between the pressing groove 62 and the supporting ring is tightly attached to the pressing groove 62 and the supporting ring 11, in addition, the sealing ring 3 is in self elasticity, and the outer ring and the inner ring have elasticity close to the connecting ring 61, so that the sealing performance between the two is better.
Although the application has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, drawings and claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.
Claims (3)
1. A polyethylene composite pipe connection structure which is characterized in that: the novel electric welding wire comprises a connecting pipe (1) and a polyethylene composite pipe (6), wherein heating resistance wires (4) are respectively arranged on the inner walls of two ends of the connecting pipe (1), the heating resistance wires (4) are connected with electric welding wire columns (41) positioned outside the connecting pipe (1), T-shaped limit rings (2) are arranged between the two groups of heating resistance wires (4), the T-shaped limit rings (2) and the connecting pipe (1) form two U-shaped limit grooves (5) with opposite opening directions, and sealing rings (3) are arranged in the limit grooves (5);
The sealing ring (3) is a water-swelling rubber ring;
The width of the limiting groove (5) gradually decreases from the groove bottom to the groove opening;
one side of the sealing ring (3) close to the opening of the limiting groove (5) is provided with two extrusion rings (31), and the two extrusion rings (31) are respectively arranged along the groove wall of the limiting groove (5);
An arc-shaped raised propping ring (11) is arranged in the limiting groove (5) along the middle of the groove bottom, and the width of the propping ring (11) is gradually reduced along the direction close to the opening of the limiting groove (5);
At least one end of the polyethylene composite pipe (6) is provided with a connecting ring (61), and the connecting ring (61) is positioned in the U-shaped limit groove (5) and is matched with the limit groove (5) in size and shape;
The end face of the connecting ring (61) is provided with a pressurizing groove (62) along the circumferential direction, and the width of the pressurizing groove (62) gradually increases from the groove bottom to the notch; the shape of the pressurizing groove (62) and the abutting ring (11) are matched with each other, so that the sealing ring (3) is tightly attached to the pressurizing groove (62) and the abutting ring (11).
2. The polyethylene composite pipe connecting structure according to claim 1, wherein the T-shaped limit ring (2) is integrally formed with the connecting pipe (1).
3. A polyethylene composite pipe connection according to claim 1, wherein the squeeze ring (31) is tapered in width in a direction approaching the opening of the limiting groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278896.4A CN109084111B (en) | 2018-10-30 | 2018-10-30 | Polyethylene composite pipe connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811278896.4A CN109084111B (en) | 2018-10-30 | 2018-10-30 | Polyethylene composite pipe connection structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109084111A CN109084111A (en) | 2018-12-25 |
| CN109084111B true CN109084111B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811278896.4A Active CN109084111B (en) | 2018-10-30 | 2018-10-30 | Polyethylene composite pipe connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109084111B (en) |
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| CN111228644A (en) * | 2020-03-25 | 2020-06-05 | 连云港市第一人民医院 | Stomach tube installation interfacing apparatus after gastrointestinal tumor operation |
| CN112161138B (en) * | 2020-10-29 | 2022-04-12 | 江西省得一康管业有限公司 | MPVE double-wall corrugated pipe connecting and sealing device |
| CN112709880B (en) * | 2020-12-31 | 2022-05-17 | 福建纳川管业科技有限责任公司 | Flexible connection method for cement concrete culvert pipe |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172670A (en) * | 1962-01-31 | 1965-03-09 | A Marrel Ets | Seals for hydraulic rams |
| EP0390746A2 (en) * | 1989-03-31 | 1990-10-03 | Geberit AG | Demountable sealing connection between one or more plastic pipes and a joining piece |
| CN1902421A (en) * | 2003-11-25 | 2007-01-24 | 石油技术有限公司 | Connection between a pipe and a wall |
| JP2010265937A (en) * | 2009-05-12 | 2010-11-25 | Nok Corp | Seal ring |
| CN202745654U (en) * | 2012-08-02 | 2013-02-20 | 斗山工程机械（中国）有限公司 | Sealing structure of front windshield of excavator and excavator |
| CN107218464A (en) * | 2016-03-22 | 2017-09-29 | 杨明昆 | A kind of electric smelting connecting pipe of steel-plastics composite pipe |
| CN107869585A (en) * | 2017-12-14 | 2018-04-03 | 常州荣南橡胶科技有限公司 | A kind of weather strip for automobile of service life length |
| CN108458196A (en) * | 2018-03-20 | 2018-08-28 | 山东东宏管业股份有限公司 | The overall plastic jointing device of steel wire mesh frame plastic composite tube and construction method |
| CN207796375U (en) * | 2018-01-12 | 2018-08-31 | 江苏狼博管道制造有限公司 | A kind of enhanced cushion rubber electric smelting double-sealing connecting pipe part |
| CN208951513U (en) * | 2018-10-30 | 2019-06-07 | 河南苏源管业有限公司 | Polythene composite piping connector and matched polyethylene compound pipe |
-
2018
- 2018-10-30 CN CN201811278896.4A patent/CN109084111B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172670A (en) * | 1962-01-31 | 1965-03-09 | A Marrel Ets | Seals for hydraulic rams |
| EP0390746A2 (en) * | 1989-03-31 | 1990-10-03 | Geberit AG | Demountable sealing connection between one or more plastic pipes and a joining piece |
| CN1902421A (en) * | 2003-11-25 | 2007-01-24 | 石油技术有限公司 | Connection between a pipe and a wall |
| JP2010265937A (en) * | 2009-05-12 | 2010-11-25 | Nok Corp | Seal ring |
| CN202745654U (en) * | 2012-08-02 | 2013-02-20 | 斗山工程机械（中国）有限公司 | Sealing structure of front windshield of excavator and excavator |
| CN107218464A (en) * | 2016-03-22 | 2017-09-29 | 杨明昆 | A kind of electric smelting connecting pipe of steel-plastics composite pipe |
| CN107869585A (en) * | 2017-12-14 | 2018-04-03 | 常州荣南橡胶科技有限公司 | A kind of weather strip for automobile of service life length |
| CN207796375U (en) * | 2018-01-12 | 2018-08-31 | 江苏狼博管道制造有限公司 | A kind of enhanced cushion rubber electric smelting double-sealing connecting pipe part |
| CN108458196A (en) * | 2018-03-20 | 2018-08-28 | 山东东宏管业股份有限公司 | The overall plastic jointing device of steel wire mesh frame plastic composite tube and construction method |
| CN208951513U (en) * | 2018-10-30 | 2019-06-07 | 河南苏源管业有限公司 | Polythene composite piping connector and matched polyethylene compound pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109084111A (en) | 2018-12-25 |
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