CN107270008A - One kind welding line plastic-steel tube and preparation method thereof - Google Patents
One kind welding line plastic-steel tube and preparation method thereof Download PDFInfo
- Publication number
- CN107270008A CN107270008A CN201710610847.5A CN201710610847A CN107270008A CN 107270008 A CN107270008 A CN 107270008A CN 201710610847 A CN201710610847 A CN 201710610847A CN 107270008 A CN107270008 A CN 107270008A
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- China
- Prior art keywords
- steel tube
- steel pipe
- wall
- stainless steel
- plastic
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Classifications
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- 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
Abstract
The invention discloses one kind welding line plastic-steel tube and preparation method thereof, by plastic anti-corrosion layer thermoplastic on the stage casing of the inwall of outer steel pipe, the linkage section of plastic anti-corrosion layer and the reserved non-lining plastic plastic anti-corrosion layer in end of outer steel pipe, reinforcement rib is prefabricated with the inwall of outer steel pipe, the outside reflexed formation annulus in port of outer steel pipe is raised；Adhering resin is lining on the inwall of linkage section, the melt viscosity is affixed on the inwall formation adhering resin layer of connection end；It will be inserted for the stainless steel tube of connection from the port of outer steel pipe, the outer wall and adhering resin layer for making stainless steel tube are bonded；The port of the outer wall of stainless steel tube and outer steel pipe is welded；Then connection ring is set between the outer wall of stainless steel tube and the annulus of outer port of steel pipe are raised, connection ring is welded with the outer wall of outer steel pipe and the outer wall of stainless steel tube respectively again, application of the stainless steel in steelplastic pipe manufacture can not have been expanded present method solves steelplastic pipe directly using the structural issue being welded to connect.
Description
Technical field
Line plastic-steel tube and preparation method thereof is welded the present invention relates to the preparation method of line plastic-steel tube, more particularly to one kind.
Background technology
The application field of line plastic-steel tube constantly extends, and connection of the people to line plastic-steel tube proposes higher requirement.Currently
The line plastic-steel tube of market supply uses traditional screw thread, three kinds of connected modes of groove or flange substantially；But it is special at some
The fields such as the field such as buried long-distance transport pipes of industrial project tube for fluid transfer, petroleum and petrochemical industry, municipal underground pipe network, it is desirable to use
It is welded to connect, while also requiring that anticorrosive coat can not be destroyed inside pipeline, traditional connected mode can not meet above-mentioned requirements；
Above-mentioned field, the problem of common existing connected mode of line plastic-steel tube has serious：The connection of line plastic-steel tube is inconvenient.Such as
Fruit is directly using being welded to connect and inner lining plastic tube can be caused to be destroyed because of high temperature, so that the protection for losing the lining plastic bed of material is made
With influence pipe-line system safety.In consideration of it, we devise a kind of line plastic-steel tube that can be used for being welded to connect and provide the lining
The production method of Plastic Steel Pipe, the application of scale can be obtained so as to the line plastic-steel tube of this kind of structure.
Another have the China Patent No. to be：200910209294.8, the day for announcing is 2010.5.5, discloses a kind of line plastic-steel tube
Connection method, it is characterised in that the both ends of the surface of lining inner surface of tubes with plastics layer and plastic layer cladding steel pipe, close to line plastic-steel tube end
The notch that there is slot rolling to obtain in the steel pipe layer in face, is equipped with sealing ring, the sealing ring is can be complete on line plastic-steel tube end face
The U-shaped circle of line plastic-steel tube end face is coated, it is then that the line plastic-steel tube end face for being cased with sealing ring is relative with clip clamping line plastic-steel tube
On notch also have clip sealing ring so that two line plastic-steel tubes are tightly connected, and in clip, clip sealing ring can be with
So that the edge of U-shaped sealing ring is also sealed.The above method is had and sealing ring is connected in line plastic-steel tube using clip
Connect, do not applied to for fields such as tube for fluid transfer, the buried long-distance transport pipes of petroleum and petrochemical industry, municipal underground pipe networks, while also existing
To manage defect：1st, plastic lining layer washing away directly facing fluid media (medium), lining plastic port position is easily washed delamination, influences pipeline
System safety；2nd, when plastic lining layer is stripped to commissure, medium starts to corrode weld seam, and it is directly rotten that this corrosion comes from medium
Erosion, more there is the electrochemical corrosion between dissimilar steel；3rd, this kind of structure is difficult bonding at dissimilar metal weld, because of the electromagnetism of commissure
Induction coefficient is easily disorderly in welding position, therefore position while welding can not realize effective bonding substantially；4th, the electromagnetic induction of stainless steel adds
Thermal effect is poor, bonding force of the steel modeling bonding force far below carbon steel and plastics of stainless steel pipeline section, in stainless steel pipe end not to lining
Modeling layer is protected, and in fluid media (medium) course of conveying, the plastic lining layer of stainless steel pipeline section is peeled off in the athletic meeting of fluid quickly, so that
Steel modeling separation is formed, the interior anticorrosive coat of pipe-line system is destroyed, so that the further operation safety of destruction pipe-line system.
The content of the invention
, should the invention provides a kind of preparation method for welding line plastic-steel tube in order to overcome the defect of above-mentioned prior art
Preparation method solves steelplastic pipe and can not expanded stainless steel directly using the structural issue being welded to connect and manufactured in steelplastic pipe
In application.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of preparation method for welding line plastic-steel tube, it is characterised in that comprise the following steps：
(1) by plastic anti-corrosion layer thermoplastic on the stage casing of the inwall of outer steel pipe, the end of plastic anti-corrosion layer and outer steel pipe is pre-
Stay and be prefabricated with reinforcement rib, outer steel pipe on the linkage section of 5-20cmm non-lining plastic plastic anti-corrosion layer, the inwall of the outer steel pipe
Port outside reflexed formation annulus it is raised；
(2) adhering resin is lining on the inwall of linkage section, the melt viscosity is affixed on the inwall formation bonding of connection end
Resin bed；
(3) it will be inserted for the stainless steel tube of connection from the port of outer steel pipe, make the outer wall and adhering resin of stainless steel tube
Layer bonding；
(4) port of the outer wall of stainless steel tube and outer steel pipe is welded；
(5) and then between the outer wall of stainless steel tube and the annulus of outer port of steel pipe are raised connection ring is set, then will connection
Ring is welded with the outer wall of outer steel pipe and the outer wall of stainless steel tube respectively.
In step (3), the stainless steel tube is from during the port insertion of outer steel pipe, and the insertion end of stainless steel tube exceedes plastics
Anticorrosive coat, and outer wall and the plastic anti-corrosion layer of stainless steel tube fits.
After by connection ring outer wall welding respectively with the outer wall of outer steel pipe and stainless steel tube, connection ring and outer steel pipe,
The commissure of stainless steel tube puts thermal shrinkable sleeve and it is heated, and thermal shrinkable sleeve is shunk and is coated in welded joints.
Described adhering resin is epoxy resin.
One kind welding line plastic-steel tube, the line plastic-steel tube includes outer steel pipe, plastic anti-corrosion layer and stainless steel tube, the plastics
Anticorrosive coat in the middle part of the inwall of outer steel pipe with bonding, and the inwall two ends of outer steel pipe are not provided with the part of plastic anti-corrosion layer for linkage section,
Adhering resin layer is set on the linkage section, and the stainless steel tube is stretched into outer steel pipe, on the outer wall and linkage section of stainless steel tube
Adhering resin layer bonding；Connection ring, connection ring point are provided between the outer wall of the outer steel tube end part and the outer wall of stainless steel tube
Outer wall not with outer steel pipe, stainless steel tube is welded.
The inwall of the outer steel pipe is provided with a plurality of reinforcement rib for protruding from outer steel pipe inner wall.
The outer wall of the outer steel tube end part sets annulus raised, and connection ring is arranged on the raised outer wall with stainless steel tube of annulus
Between.
Thermal shrinkable sleeve is cased with the weld seam that connection ring is welded with the outer wall of outer steel pipe, stainless steel tube respectively.
The present invention has advantages below：
1st, the present invention is on the basis of existing line plastic-steel tube, i.e., when with external pipe plastic liner, reserves one section of two ends not lining plastic
Linkage section, then linkage section using adhering resin layer stainless steel tube is be bonded with the outer steel pipe progress of line plastic-steel tube, then
Welded in outer steel pipe and stainless steel tube by connection ring, line plastic-steel tube can be solved in the prior art made from this method
The defect existed is invented, and is directly welded with stainless steel tube by connection ring, solve steelplastic pipe directly can not be connected using welding
The structural issue connect, connection ring welding also enhances the intensity of line plastic-steel tube after connection, has expanded stainless steel in steelplastic pipe system
Application in making；The problem of there is electrochemical corrosion after can effectively solving different steel weld.
2nd, the present invention is described outer using the line plastic-steel tube being welded to connect, including outer steel pipe, plastic anti-corrosion layer and stainless steel tube
The two ends of steel pipe are the connection end for connecting stainless steel tube, and the inwall of the plastic anti-corrosion layer and outer steel pipe is bonded, and plastics are prevented
Rotten layer is arranged between two connection ends, and the stainless steel tube socket is in outer steel pipe, between the outer wall of stainless steel tube and connection end
It is bonded by hot melt adhesive layer.Directly pipe end stainless steel tube is docked during installation, stainless steel tube welding can be completed into connection, construction
Simple and fast；After installation, make pipe-line system that there is excellent antiseptic power.
3rd, the inwall of the outer steel pipe of the present invention is provided with a plurality of reinforcement rib for protruding from outer steel pipe inner wall, and rib is prefabricated outside
On the inwall of steel pipe, the space that adhering resin layer is filled up between each rib.The effective bonding that make use of adhering resin to mould steel, also
Steel-tube construction be make use of to the physical constraints of plastics；It can further be lifted and force intensity is combined between steel is moulded, reduction steel modeling point
The risk of layer, makes pipe-line system have more excellent safe operation ability.
4th, the outer wall welding of the port of the outer steel pipe of line plastic-steel tube of the present invention and stainless steel tube, in weld formation weld seam,
And in welded joints be provided with thermal shrinkable sleeve, to thermal shrinkable sleeve, it is heated, and it is shunk completely and is coated on commissure, it is ensured that weld seam not with
Contacting external air, prevents corrosion.
Brief description of the drawings
The structural representation for the line plastic-steel tube that Fig. 1 is prepared for the present invention.
Marked in figure：1st, outer steel pipe, 2, plastic anti-corrosion layer, 3, strengthen rib, 4, linkage section, 5, adhering resin layer, 6, no
Become rusty steel pipe, 7, annulus it is raised, 8, connection ring, 9, weld seam, 10, thermal shrinkable sleeve.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings：
Embodiment 1
A kind of preparation method for welding line plastic-steel tube, comprises the following steps：
(1) prepare on outer steel pipe, the inwall of outer steel pipe and a plurality of annular reinforcement rib is set, by plastic anti-corrosion layer (thermoplastic
Guan) thermoplastic on the stage casing of the inwall of outer steel pipe, the stage casing be exactly plastic anti-corrosion layer thermoplastic on outer steel pipe interlude, two ends
One section of reserved 5-20cmm length is not provided with plastic anti-corrosion layer, and the section is linkage section (being used to be connected with stainless steel tube), outer steel pipe
Port outside reflexed formation annulus it is raised；
(2) adhering resin is lining on the inwall of linkage section, the inwall that the adhering resin is pasted on connection end forms viscous
Connect resin bed；Adhering resin is epoxy resin；
(3) it will be inserted for the stainless steel tube of connection from the port of outer steel pipe, make the outer wall and adhering resin of stainless steel tube
Layer is bonded, and the stainless steel tube end in the outer steel pipe of insertion is beyond adhering resin layer, and bonds one section with plastic anti-corrosion layer；
(4) port of the outer wall of stainless steel tube and outer steel pipe is welded；
(5) and then between the outer wall of stainless steel tube and the annulus of outer port of steel pipe are raised connection ring is set, then will connection
Ring is welded with the outer wall of outer steel pipe and the outer wall of stainless steel tube respectively.
Claims (8)
1. a kind of preparation method for welding line plastic-steel tube, it is characterised in that comprise the following steps：
(1) by plastic anti-corrosion layer thermoplastic on the stage casing of the inwall of outer steel pipe, 5- is reserved in the end of plastic anti-corrosion layer and outer steel pipe
Reinforcement rib, the port of outer steel pipe are prefabricated with the linkage section of 20cmm non-lining plastic plastic anti-corrosion layer, the inwall of the outer steel pipe
Outside reflexed formation annulus is raised；
(2) adhering resin is lining on the inwall of linkage section, the melt viscosity is affixed on the inwall formation adhering resin of connection end
Layer；
(3) stainless steel tube is inserted from the port of outer steel pipe, the outer wall and adhering resin layer for making stainless steel tube are bonded；
(4) port of the outer wall of stainless steel tube and outer steel pipe is welded；
(5) and then between the outer wall of stainless steel tube and the annulus of outer port of steel pipe are raised connection ring is set, then connection ring is divided
Do not welded with the outer wall of outer steel pipe and the outer wall of stainless steel tube.
2. a kind of preparation method for welding line plastic-steel tube according to claim 1, it is characterised in that：It is described in step (3)
Stainless steel tube is from during the insertion of the port of outer steel pipe, and the insertion end of stainless steel tube exceedes plastic anti-corrosion layer, and stainless steel tube is outer
Wall fits with plastic anti-corrosion layer.
3. a kind of preparation method for welding line plastic-steel tube according to claim 1, it is characterised in that：Distinguish by connection ring
After outer wall welding with the outer wall and stainless steel tube of outer steel pipe, the heat in connection ring and outer steel pipe, the commissure set of stainless steel tube
Contracting covers and it is heated, and thermal shrinkable sleeve is shunk and is coated in welded joints.
4. a kind of preparation method for welding line plastic-steel tube according to claim 1, it is characterised in that：Described adhering resin
For epoxy resin.
5. the welding line plastic-steel tube prepared according to claim 1 preparation method, it is characterised in that：The line plastic-steel tube includes outer steel
(1), plastic anti-corrosion layer (2) and stainless steel tube (6) are managed, the plastic anti-corrosion layer (2) and the inwall middle part of outer steel pipe (1) are bonded,
The part that the inwall two ends of outer steel pipe (1) are not provided with plastic anti-corrosion layer (2) is to set viscous on linkage section (4), the linkage section (4)
Resin bed (5) is connect, the stainless steel tube (4) is stretched into outer steel pipe (1), the outer wall of stainless steel tube (4) and gluing on linkage section (4)
Connect resin bed (5) bonding；Connection ring (8) is provided between the outer wall of outer steel pipe (1) end and the outer wall of stainless steel tube (4),
Connection ring (8) is welded with the outer wall of outer steel pipe (1), stainless steel tube (4) respectively.
6. welding line plastic-steel tube according to claim 5, it is characterised in that：The inwall of the outer steel pipe (1) is provided with more
Bar protrudes from the reinforcement rib (3) of outer steel pipe (1) inwall.
7. welding line plastic-steel tube according to claim 5, it is characterised in that：The outer wall of outer steel pipe (1) end is set
Annulus projection (7), connection ring (8) is arranged between annulus raised (7) and the outer wall of stainless steel tube (4).
8. welding line plastic-steel tube according to claim 5, it is characterised in that：Connection ring (8) respectively with outer steel pipe (1), no
Thermal shrinkable sleeve (10) is cased with the weld seam (9) of the outer wall welding of rust steel pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610847.5A CN107270008A (en) | 2017-07-25 | 2017-07-25 | One kind welding line plastic-steel tube and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710610847.5A CN107270008A (en) | 2017-07-25 | 2017-07-25 | One kind welding line plastic-steel tube and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107270008A true CN107270008A (en) | 2017-10-20 |
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ID=60078155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710610847.5A Pending CN107270008A (en) | 2017-07-25 | 2017-07-25 | One kind welding line plastic-steel tube and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107270008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994984A (en) * | 2019-04-12 | 2019-07-09 | 北京送变电有限公司 | Cable corner protective device |
| CN110360387A (en) * | 2019-07-19 | 2019-10-22 | 上海英泰塑胶股份有限公司 | A kind of high pressure resistant pipe fitting of housing steel lining modeling anti-corrosion and production method |
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| CN2502107Y (en) * | 2001-08-27 | 2002-07-24 | 东营柯林瑞尔科技有限责任公司 | Special-purpose welded joint for connecting steel and plastic pipe |
| CN2503298Y (en) * | 2001-06-27 | 2002-07-31 | 国世波 | Welding metal and plastic composite pipe joint |
| CN101701653A (en) * | 2009-10-29 | 2010-05-05 | 章明伟 | Connecting method for line plastic-steel tube |
| CN105697896A (en) * | 2016-03-29 | 2016-06-22 | 四川鑫元通钢塑管业有限公司 | Method for manufacturing lining plastic pipe by using welded connection |
| CN205806716U (en) * | 2016-06-30 | 2016-12-14 | 成都中远管道有限公司 | The box-like steel-plastics composite pipe of Jinsuo in a kind of |
-
2017
- 2017-07-25 CN CN201710610847.5A patent/CN107270008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2503298Y (en) * | 2001-06-27 | 2002-07-31 | 国世波 | Welding metal and plastic composite pipe joint |
| CN2502107Y (en) * | 2001-08-27 | 2002-07-24 | 东营柯林瑞尔科技有限责任公司 | Special-purpose welded joint for connecting steel and plastic pipe |
| CN101701653A (en) * | 2009-10-29 | 2010-05-05 | 章明伟 | Connecting method for line plastic-steel tube |
| CN105697896A (en) * | 2016-03-29 | 2016-06-22 | 四川鑫元通钢塑管业有限公司 | Method for manufacturing lining plastic pipe by using welded connection |
| CN205806716U (en) * | 2016-06-30 | 2016-12-14 | 成都中远管道有限公司 | The box-like steel-plastics composite pipe of Jinsuo in a kind of |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994984A (en) * | 2019-04-12 | 2019-07-09 | 北京送变电有限公司 | Cable corner protective device |
| CN110360387A (en) * | 2019-07-19 | 2019-10-22 | 上海英泰塑胶股份有限公司 | A kind of high pressure resistant pipe fitting of housing steel lining modeling anti-corrosion and production method |
| CN110360387B (en) * | 2019-07-19 | 2021-05-28 | 上海英泰塑胶股份有限公司 | Outer-sleeved steel inner-plastic-lined anti-corrosion high-pressure-resistant pipe fitting and manufacturing method thereof |
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Application publication date: 20171020 |
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