CN204716144U - Durable type petroleum pipe coupling - Google Patents
Durable type petroleum pipe coupling Download PDFInfo
- Publication number
- CN204716144U CN204716144U CN201520215869.8U CN201520215869U CN204716144U CN 204716144 U CN204716144 U CN 204716144U CN 201520215869 U CN201520215869 U CN 201520215869U CN 204716144 U CN204716144 U CN 204716144U
- Authority
- CN
- China
- Prior art keywords
- box cupling
- protection shroud
- shroud ring
- cupling body
- bulge loop
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model provides a kind of durable type petroleum pipe coupling, and comprise box cupling body and two protection shroud rings, the intrinsic middle part of box cupling has bulge loop, and have two sections of tapered thread segments in box cupling body, tapered thread segment lays respectively at the both sides of bulge loop; The corresponding one section of tapered thread segment of each protection shroud ring, protection shroud ring one end is fixed on bulge loop, and the other end extends protection shroud ring and box cupling body coaxial line towards the end face of box cupling body.The beneficial effects of the utility model are that screw thread place does not directly contact with liquid in pipe, avoid the corrosion of double thread, postpone the application life of tubing coupling.
Description
Technical field
The utility model relates to a kind of durable type petroleum pipe coupling.
Background technology
The every root length of oil pipe that oil field uses is about 10m, and need be connected to form the tubing string of hundreds of to a few km with box cupling, producing well is for exporting extraction oil, water injection well for carrying injection water.Because pumped (conveying) medium has certain corrosivity, oil pipe inside can adopt the modes such as corrosion-inhibiting coating, nickel phosphor plating or inner liner compound pipe to process, obtain good effect, extend the application life of oil pipe, but also there is following problem: 1. for connecting the root of two screw threads in the box cupling of two oil pipes, be reserved with withdrawing space, liquid in pipe be easily detained at this place, cause the heavy corrosion of box cupling body; 2. connecting thread contacts with corrosive medium, and screw corrosion aggravates.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of durable type petroleum pipe coupling, overcomes deficiency of the prior art.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: durable type petroleum pipe coupling, comprise box cupling body and two protection shroud rings, the intrinsic middle part of described box cupling has bulge loop, have two sections of tapered thread segments in described box cupling body, described tapered thread segment lays respectively at the both sides of described bulge loop;
The corresponding one section of described tapered thread segment of each described protection shroud ring, described protection shroud ring one end is fixed on described bulge loop, and the other end extends described protection shroud ring and described box cupling body coaxial line towards the end face of described box cupling body.
Further, described bulge loop has sealing mat on the face of described tapered thread segment.
Further, the end face of the end face that described protection shroud ring extends towards described box cupling body and described box cupling body, has seal washer near on its end face in described protection shroud ring.
The advantage that the utility model has and good effect are: owing to adopting technique scheme, screw thread place does not directly contact with liquid in pipe, avoids the corrosion of double thread, postpones the application life of tubing coupling.
Accompanying drawing explanation
Fig. 1 is that overall structure of the present utility model partly cuts open schematic diagram;
In figure: 1-box cupling body; 2-bulge loop; The tapered thread segment of 3-; 4-protects shroud ring.
Detailed description of the invention
As shown in Figure 1, the utility model provides a kind of durable type petroleum pipe coupling, and comprise box cupling body 1 and two protection shroud rings 4, the middle part in box cupling body 1 has bulge loop 2, have two sections of tapered thread segments 3 in box cupling body 1, tapered thread segment 3 lays respectively at the both sides of bulge loop 2;
The corresponding one section of tapered thread segment 3 of each protection shroud ring 4, protection shroud ring 4 one end is fixed on bulge loop 2, and the other end extends protection shroud ring 4 and box cupling body 1 coaxial line towards the end face of box cupling body 1.
During use, petroleum pipeline termination is stretched in the gap between tapered thread segment 3 and protection shroud ring 4, petroleum pipeline termination and tapered thread segment 3 screw, owing to protecting the obstruct of shroud ring 4, liquid in oil pipe can not enter tapered thread segment place, avoid screw thread to be corroded, be delayed the oil life-span of petroleum pipe coupling.
Bulge loop 2 has sealing mat (not shown) on the face of tapered thread segment 3, opens sealing function.
The end face of the end face that protection shroud ring 4 extends towards box cupling body 1 and box cupling body 1, near on its end face, there is seal washer (not shown) in protection shroud ring 4, in the gap avoiding liquid in pipe to bleed between tapered thread segment 3 and protection shroud ring 4.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (3)
1. durable type petroleum pipe coupling, is characterized in that: comprise box cupling body and two protection shroud rings, the intrinsic middle part of described box cupling has bulge loop, and have two sections of tapered thread segments in described box cupling body, described tapered thread segment lays respectively at the both sides of described bulge loop;
The corresponding one section of described tapered thread segment of each described protection shroud ring, described protection shroud ring one end is fixed on described bulge loop, and the other end extends described protection shroud ring and described box cupling body coaxial line towards the end face of described box cupling body.
2. durable type petroleum pipe coupling according to claim 1, is characterized in that: described bulge loop has sealing mat on the face of described tapered thread segment.
3. durable type petroleum pipe coupling according to claim 1 and 2, is characterized in that: the end face of the end face that described protection shroud ring extends towards described box cupling body and described box cupling body, has seal washer in described protection shroud ring near on its end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520215869.8U CN204716144U (en) | 2015-04-10 | 2015-04-10 | Durable type petroleum pipe coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520215869.8U CN204716144U (en) | 2015-04-10 | 2015-04-10 | Durable type petroleum pipe coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716144U true CN204716144U (en) | 2015-10-21 |
Family
ID=54315148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520215869.8U Expired - Fee Related CN204716144U (en) | 2015-04-10 | 2015-04-10 | Durable type petroleum pipe coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641500A (en) * | 2016-11-29 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Coupling for preventing oil leakage |
-
2015
- 2015-04-10 CN CN201520215869.8U patent/CN204716144U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641500A (en) * | 2016-11-29 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Coupling for preventing oil leakage |
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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: 20151021 Termination date: 20160410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |