CN205063847U - Joint hoop - Google Patents
Joint hoop Download PDFInfo
- Publication number
- CN205063847U CN205063847U CN201520816327.6U CN201520816327U CN205063847U CN 205063847 U CN205063847 U CN 205063847U CN 201520816327 U CN201520816327 U CN 201520816327U CN 205063847 U CN205063847 U CN 205063847U
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- China
- Prior art keywords
- internal thread
- face
- tapering
- tapering internal
- contact
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Abstract
The utility model relates to a joint hoop, joint hoop (1) both ends are provided with tapering internal thread (2), and tapering internal thread (2) end sets up conical sealing surface (3), sets gradually the sealed face of circumference cylinder groove (4), arc transition face (5) and cylinder (6) between tapering internal thread (2) and conical sealing surface (3), and conical sealing surface (3) end sets up moment of torsion circular bead (7), and moment of torsion circular bead (7) terminal surface sets up the profile of tooth structure, tapering external screw thread meshing on tapering internal thread (2) and the body. The utility model discloses tapering internal thread end sets up multiple sealed face, and is with pipeline interference fit during the use, sealed effectual, in addition, reversing the circular bead terminal surface and setting up the profile of tooth structure, anti torsional interaction is good.
Description
Technical field
The utility model relates to oil drilling production technique field, relates to the pipeline thread link technique of drilling technology, particularly a kind of box cupling.
Background technology
A kind of conventional oil drilling link of box cupling, Main Function be by the screw thread at box cupling two ends for go into the well with petroleum casing pipe to provide with oil pipe and be connected.This position is the weakest link of whole oil casing, and therefore the use of quality on final oil casing of box cupling has conclusive impact.At present, along with the world is to the reduction year by year of the sharply soaring of energy demand and oil allowable exploitation, also more and more higher to oil exploitation equipment Requirement, thus more and more harsher technical requirements be it is also proposed to the sealing between petroleum pipeline and pipe, bonding strength and corrosion resistance etc., thus force people to remove research and development performance nipple more reliably.
Utility model content
The purpose of this utility model is the shortcoming overcoming prior art, provides a kind of good airproof performance, stable connection, the box cupling that torque resistant effect is strong.
The purpose of this utility model is achieved through the following technical solutions: a kind of box cupling, box cupling two ends are provided with tapering internal thread, tapering female ends arranges conical seal (contact) face, circumferential cylinder groove, arc transiting surface and column sealed is set gradually between tapering internal thread and conical seal (contact) face, circumference cylinder groove is adjacent with tapering internal thread, column sealed adjacent with conical seal (contact) face, conical seal (contact) face end arranges torque shoulder, torque shoulder end face arranges tooth-shape structure, and described tapering internal thread engages with the tapering external screw thread on body.Circumference cylinder groove, for storing lubrication oil, increases sealing performance, arranges column sealed between arc transiting surface and conical seal (contact) face, multi-sealed, increases sealing effectiveness.During assembling, on box cupling column sealed and conical seal (contact) face all with the sealing surface interference fit on body.Torque shoulder end face arranges tooth-shape structure, arranges the tooth-shape structure becoming tooth-shape structure to match with box cupling torque shoulder end accordingly in body torque shoulders end.During assembling, the tooth-shape structure on body torque shoulders becomes tooth-shape structure interference fit with box cupling torque shoulder end, on the one hand, tooth-shape structure increases contact area, increases sealing effectiveness further, on the other hand, tooth-shape structure coordinates, and can play torque resistant effect well when external force applies.
Described conical seal (contact) face and torque shoulder junction arrange chamfering.The arc of chamfering coordinates and is more conducive to sealing.
The utility model has the following advantages:
1, good airproof performance: first, arranges column sealed between conical seal (contact) face and arc-shaped transitional surface, multi-sealed, good sealing effect.Secondly, tooth-shape structure is set at box cupling torque shoulders end face, the body torque shoulders coordinated with it arranges corresponding tooth-shape structure, increase and coordinate contact area, strengthen sealing effectiveness further.In addition, circumferential cylinder groove contributes to storing lubrication oil, and can screw thread be made when machining internal thread better to move back tail, play the effect of escape, thus oil pipe or sleeve pipe is twisted with box cupling connect rear sealing effectiveness better, during the more stable use of performance.When assembling with body, on box cupling, sealing surface interference fit on each sealing surface and body, ensures sealing performance.
2, torque resistant is effective: torque shoulder end face arranges tooth-shape structure, arranges the tooth-shape structure becoming tooth-shape structure to match with box cupling torque shoulder end accordingly in body torque shoulders end.During assembling, the tooth-shape structure on body torque shoulders becomes tooth-shape structure interference fit with box cupling torque shoulder end, and tooth-shape structure coordinates, and can play torque resistant effect well when external force applies.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-box cupling, 2-tapering internal thread, 3-conical seal (contact) face, 4-circumference cylinder groove, 5-arc transiting surface, column sealed of 6-, 7-torque shoulder.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of box cupling, box cupling 1 two ends are provided with tapering internal thread 2, tapering internal thread 2 end arranges conical seal (contact) face 3, circumferential cylinder groove 4, arc transiting surface 5 and column sealed face 6 is set gradually between tapering internal thread 2 and conical seal (contact) face 3, circumference cylinder groove 4 is adjacent with tapering internal thread 2, and column sealed face 6 is adjacent with conical seal (contact) face 3.Circumference cylinder groove 4, for storing lubrication oil, increases sealing performance, arranges column sealed face 6 between arc transiting surface 5 and conical seal (contact) face 3, multi-sealed, increases sealing effectiveness.
Conical seal (contact) face 3 end arranges torque shoulder 7, and conical seal (contact) face 3 and torque shoulder 7 junction arrange chamfering, and the arc of chamfering is combined with and is beneficial to raising sealing effectiveness.Torque shoulder 7 end face arranges tooth-shape structure, arranges the tooth-shape structure becoming tooth-shape structure to match with box cupling torque shoulder end accordingly in body torque shoulders end.During assembling, the tooth-shape structure on body torque shoulders becomes tooth-shape structure interference fit with box cupling torque shoulder 7 end, on the one hand, tooth-shape structure increases contact area, increases sealing effectiveness further, on the other hand, tooth-shape structure coordinates, and can play torque resistant effect well when external force applies.Described tapering internal thread 2 engages with the tapering external screw thread on body.
During assembling, on box cupling column sealed face 6 and conical seal (contact) face 3 all with the sealing surface interference fit on body.
Claims (2)
1. a box cupling, it is characterized in that: box cupling (1) two ends are provided with tapering internal thread (2), tapering internal thread (2) end arranges conical seal (contact) face (3), circumferential cylinder groove (4), arc transiting surface (5) and column sealed (6) are set gradually between tapering internal thread (2) and conical seal (contact) face (3), conical seal (contact) face (3) end arranges torque shoulder (7), torque shoulder (7) end face arranges tooth-shape structure, and described tapering internal thread (2) is engaged with the tapering external screw thread on body.
2. a kind of box cupling according to claim 1, is characterized in that: described conical seal (contact) face (3) and torque shoulder (7) junction arrange chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520816327.6U CN205063847U (en) | 2015-10-22 | 2015-10-22 | Joint hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520816327.6U CN205063847U (en) | 2015-10-22 | 2015-10-22 | Joint hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205063847U true CN205063847U (en) | 2016-03-02 |
Family
ID=55390415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520816327.6U Expired - Fee Related CN205063847U (en) | 2015-10-22 | 2015-10-22 | Joint hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205063847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382099A (en) * | 2016-11-15 | 2017-02-08 | 东营威玛石油钻具有限公司 | Threaded connection structure of air sealing oil casing |
-
2015
- 2015-10-22 CN CN201520816327.6U patent/CN205063847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382099A (en) * | 2016-11-15 | 2017-02-08 | 东营威玛石油钻具有限公司 | Threaded connection structure of air sealing oil casing |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20161022 |