CN203963363U - Superhigh molecular polyethylene compound pipe pipeline connecting structure - Google Patents
Superhigh molecular polyethylene compound pipe pipeline connecting structure Download PDFInfo
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- CN203963363U CN203963363U CN201420377352.4U CN201420377352U CN203963363U CN 203963363 U CN203963363 U CN 203963363U CN 201420377352 U CN201420377352 U CN 201420377352U CN 203963363 U CN203963363 U CN 203963363U
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- plasticity
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- pipe
- internal lining
- lining pipe
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Abstract
Superhigh molecular polyethylene compound pipe pipeline connecting structure, belongs to pipeline connection technology field.Comprise plasticity internal lining pipe (1) and the fixed cover steel pipe (2) in plasticity internal lining pipe (1) outside, steel pipe (2) end is provided with flange (3), the periphery of flange (3) has an annular step (4), the end of plasticity internal lining pipe (1) has plasticity flange (5) laterally, and plasticity flange (5) is positioned at the circular groove of step (4) and flange (3) formation.The joint of two steps of welding, the heat that welding produces makes the melting of plasticity flange, and the plasticity internal lining pipe of two multiple tubes is fused into and is structure as a whole, and has reached hermetic effect, prevents high salinity solution, SO
2deng Korrosionsmedium to steel pipe produce corrosion, improve working life, and after the melting of plasticity flange together with step tight bond, be connected firmly, simple in structure.
Description
Technical field
Superhigh molecular polyethylene compound pipe pipeline connecting structure, belongs to pipeline connection technology field.
Background technique
Mostly be for delivery of the pipeline of crude oil, rock gas and abrasiveness medium the steel pipe that flange connects at present, owing to often containing a large amount of SO in the former oil and gas of carrying
2, salt and other corrosive materials, tube wall is had to strong corrosivity, greatly shortened its working life, in addition owing to containing salt and wax in crude oil, in using process, can cause line clogging because of wax deposition and fouling.
For solving the problem of wearing and tearing, burn into wax deposition and fouling, worked out afterwards flexible high pressure sebific duct, internal layer is the flexible composite pipe of polyethylene or PVC, but this type of nonmetal flexible pipe is in the time connecting end, often have poorly sealed problem, two flexible pipes cannot reach sealing completely, have potential safety hazard, and flexible high pressure sebific duct, internal layer are the flexible composite pipe of polyethylene or PVC easy wax deposition still in the time of conveying crude oil, cause internal diameter to diminish, quantity delivered reduces, and effect is undesirable.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide that one overcomes that conventional steel is perishable, the shortcoming such as wax deposition, abrasion resistance properties are poor, overcome existing multiple tube linkage structure complexity simultaneously, connect the superhigh molecular polyethylene compound pipe pipeline connecting structure insecure, sealing is poor.
The utility model solves the technological scheme that its technical problem adopts: this superhigh molecular polyethylene compound pipe pipeline connecting structure, it is characterized in that: comprise plasticity internal lining pipe and the fixed cover steel pipe in plasticity internal lining pipe outside, steel tube end part is provided with flange, the periphery of flange has an annular step, the end of plasticity internal lining pipe has plasticity flange laterally, and plasticity flange is positioned at the circular groove of step and flange formation.By the docking of two multiple tubes, two step docking are compressed, by welding the joint of two steps, the heat that welding produces makes the melting of plasticity flange, the plasticity internal lining pipe of two multiple tubes becomes one structure, and improves sealing, prevents high salinity solution, SO
2deng Korrosionsmedium to steel pipe produce corrosion, improve working life, and after the melting of plasticity flange together with step tight bond, be connected firmly, simple in structure.
Preferably, the material of described plasticity internal lining pipe is ultra-high molecular weight polyethylene.The plasticity internal lining pipe of ultra-high molecular weight polyethylene material is compared common flexible lining pipe, have better wear resistance, self lubricity, and chemical property is more stable, aging quality resistance is strong, thereby reduce the situation such as wearing and tearing, fouling of inner-walls of duct, improve working life.
Preferably, the external diameter of described plasticity internal lining pipe is greater than the internal diameter 2～5mm of steel pipe.Plasticity internal lining pipe penetrates in steel pipe after necking down, and after heating, plasticity internal lining pipe expands, and tightly serves as a contrast at steel pipe inner wall, avoids having gap between steel pipe and plasticity internal lining pipe.
Preferably, the radial thickness of described step is 15～25mm.Can ensure that the heat producing can merge plasticity flange in the time of welding.
Preferably, the external diameter of described plasticity flange equals the internal diameter of step.Ensure that plasticity flange fills up in the circular groove of step and flange formation, while ensureing welding step, abundant and step bonding after the melting of plasticity flange, it is solid and reliable that guarantee connects.
Preferably, the axial end of plasticity flange is higher than the axial end 1～3mm of step.Can effectively ensure that plasticity flange fully merges, avoid occurring cavity, improve sealing and working life.
Compared with prior art, the beneficial effect that the technique scheme of this superhigh molecular polyethylene compound pipe pipeline connecting structure has is:
1, the joint of two steps of welding, the heat that welding produces makes the melting of plasticity flange, and the plasticity internal lining pipe of two multiple tubes is fused into and is structure as a whole, and has reached hermetic effect, prevents high salinity solution, SO
2deng Korrosionsmedium, steel pipe is produced to corrosion, improves working life, and simple in structure, after plasticity flange melting simultaneously, together with step, flange tight bond, be connected firmly, by steel pipe can be on ground, underground use.
2, the plasticity internal lining pipe of ultra-high molecular weight polyethylene material is compared common flexible lining pipe, have stronger wear resistance, self lubricity, and chemical property is more stable, aging quality resistance is strong, thereby reduce the situation such as wearing and tearing, fouling of inner-walls of duct, improve working life.
3, the external diameter of plasticity internal lining pipe is greater than the internal diameter 2～5mm of steel pipe, and plasticity internal lining pipe penetrates in steel pipe after necking down, and after heating, plasticity internal lining pipe expands, and tightly serves as a contrast at steel pipe inner wall, avoids occurring gap between steel pipe and plasticity internal lining pipe.
4, the axial end of plasticity flange is higher than the axial end 1～3mm of step.Can effectively ensure to weld time, plasticity flange fully merges, and avoids occurring cavity, improves sealing and working life.
Brief description of the drawings
Fig. 1 is the perspective view of this superhigh molecular polyethylene compound pipe pipeline connecting structure.
Fig. 2 is the sectional view of this superhigh molecular polyethylene compound pipe pipeline connecting structure.
Fig. 3 is the structural representation after this superhigh molecular polyethylene compound pipe pipeline connecting structure connects.
Wherein: 1, plasticity internal lining pipe 2, steel pipe 3, flange 4, step 5, plasticity flange.
Embodiment
Fig. 1 ~ 3rd, the most preferred embodiment of this superhigh molecular polyethylene compound pipe pipeline connecting structure, is described further below in conjunction with 1 ~ 3 pair of the utility model of accompanying drawing.
With reference to Fig. 1～2, this superhigh molecular polyethylene compound pipe pipeline connecting structure, comprise plasticity internal lining pipe 1 and the fixed cover steel pipe 2 in plasticity internal lining pipe 1 outside, the material of plasticity internal lining pipe 1 is ultra-high molecular weight polyethylene, be welded with a discoid flange 3 in the end of steel pipe 2, the periphery of flange 3 has an annular step 4, step 4 is positioned at end one side of steel pipe 2, accordingly, the end of plasticity internal lining pipe 1 has the plasticity flange 5 of the turnover of level laterally, and plasticity flange 5 is positioned at the circular groove that step 4 and flange 3 form.
Preferably, the external diameter of plasticity internal lining pipe 1 is greater than the internal diameter 2～5mm of steel pipe 2, and plasticity internal lining pipe 1 penetrates in steel pipe 2 after necking down, and after heating, plasticity internal lining pipe 1 expands, and tightly serves as a contrast at steel pipe 2 inwalls, avoids occurring gap between steel pipe 2 and plasticity internal lining pipe 1.The radial thickness of step 4 is 20mm, confirms by experiment, in the time that the radial thickness of step 4 is 20mm, can plasticity flange 5 fully be merged in the situation of normal welding, does not need the heat that provides extra, easy to process.
Preferably, the external diameter of plasticity flange 5 equals the internal diameter of step 4, ensures that plasticity flange 5 fills up in the circular groove that step 4 and flange 3 form, and while ensureing welding step 4, after 5 meltings of plasticity flange, fully bonds with step 4, ensures the solid and reliable of connection.The axial end of plasticity flange 5, higher than the axial end 1～3mm of step 4, can effectively ensure that plasticity flange 5 fully merges, and avoids occurring cavity, improves sealing and working life.
Working principle: with reference to Fig. 3, plasticity internal lining pipe 1 is penetrated in steel pipe 2 by necking down, after heating, plasticity internal lining pipe 1 expands, tightly serve as a contrast the inwall at steel pipe 2, avoid occurring gap between steel pipe 2 and plasticity internal lining pipe 1, the two ends of two multiple tubes of docking, plasticity flange 5 is compressed mutually, and keep certain pressure, and welding step 4, the heat that welding produces merges plasticity flange 5, and together with step 4 tight bond, the plasticity internal lining pipe 1 of two multiple tubes becomes one structure, and improves sealing, prevents high salinity solution and SO
2deng Korrosionsmedium, steel pipe 2 is produced to corrosion, improves working life, and after 5 meltings of plasticity flange together with step 4 tight bond, be connected firmly, simple in structure.
Be more than most preferred embodiment of the present utility model, the utility model can also adopt other structures:
Plasticity internal lining pipe 1 in the utility model can also be other macromolecular material; The radial thickness of step 4 can also be chosen between 15～25mm.
The above, it is only preferred embodiment of the present utility model, be not the restriction of the utility model being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (6)
1. a superhigh molecular polyethylene compound pipe pipeline connecting structure, it is characterized in that: comprise plasticity internal lining pipe (1) and the fixed cover steel pipe (2) in plasticity internal lining pipe (1) outside, steel pipe (2) end is provided with flange (3), the periphery of flange (3) has an annular step (4), the end of plasticity internal lining pipe (1) has plasticity flange (5) laterally, and plasticity flange (5) is positioned at the circular groove of step (4) and flange (3) formation.
2. superhigh molecular polyethylene compound pipe pipeline connecting structure according to claim 1, is characterized in that: the material of described plasticity internal lining pipe (1) is ultra-high molecular weight polyethylene.
3. superhigh molecular polyethylene compound pipe pipeline connecting structure according to claim 1, is characterized in that: the external diameter of described plasticity internal lining pipe (1) is greater than the internal diameter 2～5mm of steel pipe (2).
4. superhigh molecular polyethylene compound pipe pipeline connecting structure according to claim 1, is characterized in that: the radial thickness of described step (4) is 15～25mm.
5. superhigh molecular polyethylene compound pipe pipeline connecting structure according to claim 1, is characterized in that: the external diameter of described plasticity flange (5) equals the internal diameter of step (4).
6. superhigh molecular polyethylene compound pipe pipeline connecting structure according to claim 1 or 5, is characterized in that: the axial end of described plasticity flange (5) is higher than the axial end 1～3mm of step (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377352.4U CN203963363U (en) | 2014-07-09 | 2014-07-09 | Superhigh molecular polyethylene compound pipe pipeline connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420377352.4U CN203963363U (en) | 2014-07-09 | 2014-07-09 | Superhigh molecular polyethylene compound pipe pipeline connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963363U true CN203963363U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420377352.4U Expired - Fee Related CN203963363U (en) | 2014-07-09 | 2014-07-09 | Superhigh molecular polyethylene compound pipe pipeline connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963363U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106985948A (en) * | 2015-11-27 | 2017-07-28 | 株式会社岛野 | Bicycle use component fixture construction and bicycle use assembling components body |
| CN110107759A (en) * | 2019-05-14 | 2019-08-09 | 云南联塑科技发展有限公司 | A kind of ultrahigh molecular weight polyethylene tubing heat-melting butt-joint method |
| CN114198584A (en) * | 2021-12-16 | 2022-03-18 | 大庆石油管理局有限公司松原装备制造分公司 | Anti-corrosion connecting structure in gathering and transportation pipeline of metering station and processing method thereof |
-
2014
- 2014-07-09 CN CN201420377352.4U patent/CN203963363U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106985948A (en) * | 2015-11-27 | 2017-07-28 | 株式会社岛野 | Bicycle use component fixture construction and bicycle use assembling components body |
| CN110107759A (en) * | 2019-05-14 | 2019-08-09 | 云南联塑科技发展有限公司 | A kind of ultrahigh molecular weight polyethylene tubing heat-melting butt-joint method |
| CN114198584A (en) * | 2021-12-16 | 2022-03-18 | 大庆石油管理局有限公司松原装备制造分公司 | Anti-corrosion connecting structure in gathering and transportation pipeline of metering station and processing method thereof |
| CN114198584B (en) * | 2021-12-16 | 2024-06-04 | 松原市大庆油田汽车改装有限公司 | Anti-corrosion connection structure in metering station gathering and conveying pipeline and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20200709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |