CN203297791U - Petroleum pipeline with taper opening structures - Google Patents
Petroleum pipeline with taper opening structures Download PDFInfo
- Publication number
- CN203297791U CN203297791U CN2013203149540U CN201320314954U CN203297791U CN 203297791 U CN203297791 U CN 203297791U CN 2013203149540 U CN2013203149540 U CN 2013203149540U CN 201320314954 U CN201320314954 U CN 201320314954U CN 203297791 U CN203297791 U CN 203297791U
- Authority
- CN
- China
- Prior art keywords
- opening structures
- petroleum pipeline
- taper opening
- cone mouth
- mouth structure
- 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
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Abstract
The utility model discloses a petroleum pipeline with taper opening structures. The petroleum pipeline comprises a body of a tubular structure. Inner threads are arranged at the two ends of the body respectively, the taper opening structures are arranged on the outer sides of the inner threads, the taper of the taper opening structures is larger than 1/5, the smallest inner diameter of the taper opening structures is equal to the diameter of the threaded tooth base portion of the inner threads, and the inner faces of the taper opening structures are smooth surfaces so that the taper opening structures can be sealed with colloid sealing structures in a contacting mode. Arc-shaped annular protrusions are arranged on the middle portions of the taper opening structures, and the smallest inner diameter of the annular protrusions is less than the diameter of the threaded tooth base portion of the inner threads so as to prevent the matching of the inner threads and connecting pieces with thread structures from being interfered by the annular protrusions. According to the petroleum pipeline with the taper opening structures, the taper opening structures are sealed with seal rings of the corresponding connecting pieces in a contacting mode, the seal rings are further compressed through the annular protrusions, and therefore a better contacting sealing effect is achieved.
Description
Technical field
The utility model relates to a kind of cone mouth structure petroleum pipeline, belongs to the petroleum pipeline technical field.
Background technique
Sealing problem after the petroleum pipeline docking is a very important problem, and prior art often uses the seal approach such as seal ring, seal ring, expansion structure to seal, and its structure is comparatively complicated, and sealing descends along with the passing of service time.The claimant is applying for a kind of expansion ring type pipe end link on the same day, so also need to design a kind of cone mouth structure petroleum pipeline of simple in structure, the good airproof performance that coordinates with expansion ring type pipe end link.
The model utility content
For the technical problem of the pipe end constructions seal structure complex that solves petroleum pipeline, solve simultaneously the poor problem of endurance of seal approach, the utility model provides a kind of cone mouth structure petroleum pipeline.
The purpose of this utility model is carried out specific implementation by the following technical programs:
A kind of cone mouth structure petroleum pipeline, the body that comprises cylindrical structure, the two ends of body respectively are provided with internal thread, and in the outside of internal thread, be provided with the cone mouth structure, the tapering of described cone mouth structure is greater than 1/5, the minimum diameter of described cone mouth structure equals the diameter of the spiral shell tooth base portion of described internal thread, and the internal surface of cone mouth structure is smooth surface, makes it easy to the sealing that contacts with the colloid seal structure.
Described internal thread is the rectangular configuration screw thread.
Be provided with the annular projection of circular arc at the middle part of described cone mouth structure, the minimum diameter of described circular protrusion is less than the diameter of the spiral shell tooth base portion of described internal thread, to prevent it, disturbs coordinating of described internal thread and the link with worm structure.
A kind of cone mouth structure petroleum pipeline described in the utility model, the cone mouth structure contacts sealing with the seal ring of corresponding link, and by circular protrusion, seal ring is further compressed, and reaches better contact sealing effect.
Description of drawings
Below according to drawings and embodiments the utility model is described in further detail.
Fig. 1 is a kind of structural drawing of cone mouth structure petroleum pipeline.
Fig. 2 is use view of the present utility model.
In figure: 1, body; 2, internal thread; 3, cone mouth structure; 4, circular protrusion.
Embodiment
As shown in Figure 1-2, the described a kind of cone mouth structure petroleum pipeline of the utility model embodiment, the body 1 that comprises cylindrical structure, the two ends of body 1 respectively are provided with internal thread 2, and be provided with cone mouth structure 3 in the outside of internal thread 2, the tapering of described cone mouth structure 3 is greater than 1/5, and the minimum diameter of described cone mouth structure 3 equals the diameter of the spiral shell tooth base portion of described internal thread 2, and the internal surface of cone mouth structure 3 is smooth surface, makes it easy to the sealing that contacts with the colloid seal structure.
Described internal thread 2 is the rectangular configuration screw thread.
Be provided with the annular projection 4 of circular arc at the middle part of described cone mouth structure 3, the minimum diameter of described circular protrusion 4 is less than the diameter of the spiral shell tooth base portion of described internal thread 2, to prevent it, disturbs coordinating of described internal thread 2 and the link with worm structure.
A kind of cone mouth structure petroleum pipeline described in the utility model, the cone mouth structure contacts sealing with the seal ring of corresponding link, and by circular protrusion, seal ring is further compressed, and reaches better contact sealing effect.
Claims (3)
1. cone mouth structure petroleum pipeline, the body that comprises cylindrical structure, it is characterized in that, the two ends of body respectively are provided with internal thread, and in the outside of internal thread, be provided with the cone mouth structure, the tapering of described cone mouth structure is greater than 1/5, and the minimum diameter of described cone mouth structure equals the diameter of the spiral shell tooth base portion of described internal thread, and the internal surface of cone mouth structure is smooth surface.
2. a kind of cone mouth structure petroleum pipeline as claimed in claim 1, is characterized in that, described internal thread is the rectangular configuration screw thread.
3. a kind of cone mouth structure petroleum pipeline as claimed in claim 1, is characterized in that, is provided with the annular projection of circular arc at the middle part of described cone mouth structure, and the minimum diameter of described circular protrusion is less than the diameter of the spiral shell tooth base portion of described internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203149540U CN203297791U (en) | 2013-06-04 | 2013-06-04 | Petroleum pipeline with taper opening structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203149540U CN203297791U (en) | 2013-06-04 | 2013-06-04 | Petroleum pipeline with taper opening structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203297791U true CN203297791U (en) | 2013-11-20 |
Family
ID=49573798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203149540U Expired - Fee Related CN203297791U (en) | 2013-06-04 | 2013-06-04 | Petroleum pipeline with taper opening structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203297791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292076A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Petroleum pipeline with taper structures |
-
2013
- 2013-06-04 CN CN2013203149540U patent/CN203297791U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103292076A (en) * | 2013-06-04 | 2013-09-11 | 无锡金顶石油管材配件制造有限公司 | Petroleum pipeline with taper structures |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140604 |