CN213541577U - Composite pipe connecting joint - Google Patents
Composite pipe connecting joint Download PDFInfo
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- CN213541577U CN213541577U CN202022630253.0U CN202022630253U CN213541577U CN 213541577 U CN213541577 U CN 213541577U CN 202022630253 U CN202022630253 U CN 202022630253U CN 213541577 U CN213541577 U CN 213541577U
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- pipe
- composite pipe
- connecting joint
- pipe connecting
- joint
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Abstract
The utility model discloses a compound union coupling connects belongs to oil conveying pipeline and connects technical field. The main technical scheme is that the inner side wall of the pipe joint pipe body is provided with an anti-corrosion coating, and an outer anti-corrosion coating structure is arranged on the outer side wall of the pipe joint pipe body. The composite pipe connecting joint can effectively prevent the outer side surface of the composite pipe connecting joint from being corroded and has the characteristic of long service life.
Description
Technical Field
The utility model belongs to the technical field of the pipe connection, specific saying relates to a composite pipe union coupling who connects between the composite pipe who uses in constituting oil conveying pipeline.
Background
At present, the transportation of petroleum and other corrosive liquids is completed by using a transportation pipeline formed by connecting plastic composite pipes through pipe connection joints. The plastic composite pipe is inserted into the pipe connecting joint, and the sealing hoop is fixed at the insertion position of the plastic composite pipe and the pipe connecting joint to form the conveying pipeline. However, because of the strength requirement, the pipe joints are generally made of steel pressure pipes by machining, and in order to prevent rusting and prolong the service life of the pipe joints, the inner walls of the pipe joints are provided with anti-corrosion layers. However, in the use process, because the oil or liquid in the pipeline is in a high-pressure state, the liquid easily permeates outwards through the joint of the plastic composite pipe transversely, so that the outer side surface of the pipe joint is corroded, the tightening force of the sealing hoop is affected, and the leakage at the joint of the pipeline is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a composite pipe connecting joint which can effectively prevent the corrosion of the outer side surface and has long service life.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a compound union coupling connects, inside wall are provided with the union coupling body of anticorrosive coating, its characterized in that: and an outer anti-corrosion coating structure is arranged on the outer side wall of the pipe connecting joint body.
The additional technical characteristics of the composite pipe connecting joint further comprise:
two ends of the pipe body of the pipe connecting joint are respectively provided with at least two sealing ring annular grooves at intervals, and the structure of the outer anti-corrosion coating exceeds the corresponding second sealing ring annular groove;
-the outer anti-corrosion coating is formed by a fluororesin or epoxy resin material layer with a thickness of more than 200 microns;
the outer side wall surfaces forming the two end parts of the pipe connecting joint pipe body are of an outer-skimming circular arc-shaped chamfer structure.
The utility model provides a compound union coupling connects compares with prior art, has following advantage: firstly, because the outer side wall forming the composite pipe connecting joint is provided with an outer anti-corrosion coating structure, the outer side wall can be prevented from being corroded and rusted even if leakage exists between the body and the inserted plastic composite pipe, the sealing performance between the composite pipe connecting joint and the inserted plastic composite pipe is greatly improved, and the service life of the composite pipe connecting joint is prolonged; and two ends of the pipe body of the pipe joint are respectively provided with at least two sealing ring grooves at intervals, and the outer anti-corrosion coating structure exceeds the corresponding second sealing ring groove, so that the seepage-proofing performance of the conveyed petroleum and other liquids can be greatly improved, and the anti-corrosion performance of the outer side wall of the composite pipe joint is further improved.
Drawings
Fig. 1 is a schematic view of the utility model providing a use structure of the composite pipe coupling joint.
Detailed Description
The structure of the composite pipe joint according to the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a composite pipe connection joint and a structure diagram of an oil transportation pipeline composed of the same. The structure comprises a structure schematic diagram of a composite pipe connecting joint pipe body 1 and a left plastic composite pipe 2 and a right plastic composite pipe 3 which are inserted at two end parts of the composite pipe; the utility model provides a compound pipe coupling joint 1's structure includes the pipe coupling joint body 1 that is provided with anti-corrosion coating 12 on the inside wall 11, is provided with outer anti-corrosion coating structure 13 on the lateral wall of the compound pipe 2 of plastics, 3 about this, and this outer anti-corrosion coating constitutes for fluororesin or epoxy resin material layer that thickness is greater than 200 microns. That is, the left and right plastic composite pipes 2 and 3 are inserted into both ends of the composite pipe joint body 1, and the outer hoop sheet iron 14 is fastened to the insertion portion of the pipe line, so that even if corrosive oil or other liquid in the transfer pipe line leaks through the outer wall of the pipe body and the inserted plastic composite pipe 4, the outer wall can be prevented from rusting due to corrosion.
In the structure of the composite pipe connecting joint, the following components are adopted:
in order to further improve the sealing performance of the pipe connecting joint pipe body and the plastic composite pipe fitting, two (or a plurality of) sealing ring annular grooves 15 and 16 capable of fixing sealing rings are respectively arranged at intervals at two ends of the pipe connecting joint pipe body, and the outer anti-corrosion coating structure 13 exceeds the corresponding second (inner) sealing ring annular groove 15;
in order to further improve the sealing performance of the pipe connecting joint pipe body and the plastic composite pipe fitting, the outer side wall surfaces of the two end portions of the pipe connecting joint pipe body are of an outer-skimming circular arc-shaped chamfer structure 17, so that the two end portions of the pipe connecting joint pipe body can be extruded with the inner wall member of the plastic composite pipe fitting more tightly.
Claims (4)
1. The utility model provides a compound union coupling connects, inside wall are provided with the union coupling body of anticorrosive coating, its characterized in that: and an outer anti-corrosion coating structure is arranged on the outer side wall of the pipe connecting joint body.
2. A composite pipe coupling according to claim 1, wherein: the two ends of the pipe connection joint pipe body are respectively provided with at least two sealing ring grooves at intervals, and the outer anti-corrosion coating structure exceeds the corresponding second sealing ring groove.
3. A composite pipe coupling according to claim 1, wherein: the outer anti-corrosion coating is composed of a fluororesin or epoxy resin material layer with the thickness of more than 200 microns.
4. A composite pipe coupling according to claim 1, wherein: the outer side wall surfaces forming the two end parts of the pipe connecting joint pipe body are of an outer-skimming circular arc-shaped chamfer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022630253.0U CN213541577U (en) | 2020-11-14 | 2020-11-14 | Composite pipe connecting joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022630253.0U CN213541577U (en) | 2020-11-14 | 2020-11-14 | Composite pipe connecting joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213541577U true CN213541577U (en) | 2021-06-25 |
Family
ID=76481989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022630253.0U Active CN213541577U (en) | 2020-11-14 | 2020-11-14 | Composite pipe connecting joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213541577U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677851A (en) * | 2023-05-16 | 2023-09-01 | 广西国宏智鸿环保科技集团股份有限公司 | Anti-corrosion water supply pipe and preparation method thereof |
| WO2025194691A1 (en) * | 2024-03-20 | 2025-09-25 | 日丰企业（佛山）有限公司 | Connecting device for steel-plastic composite pipe, and steel-plastic composite connecting pipe |
-
2020
- 2020-11-14 CN CN202022630253.0U patent/CN213541577U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116677851A (en) * | 2023-05-16 | 2023-09-01 | 广西国宏智鸿环保科技集团股份有限公司 | Anti-corrosion water supply pipe and preparation method thereof |
| WO2025194691A1 (en) * | 2024-03-20 | 2025-09-25 | 日丰企业（佛山）有限公司 | Connecting device for steel-plastic composite pipe, and steel-plastic composite connecting pipe |
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