CN205078232U - Drilling rod back pressure prevents spouting sealed plugging device - Google Patents
Drilling rod back pressure prevents spouting sealed plugging device Download PDFInfo
- Publication number
- CN205078232U CN205078232U CN201520888557.3U CN201520888557U CN205078232U CN 205078232 U CN205078232 U CN 205078232U CN 201520888557 U CN201520888557 U CN 201520888557U CN 205078232 U CN205078232 U CN 205078232U
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- China
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- sealing mechanism
- lining
- seal
- bush
- main part
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- Expired - Fee Related
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Abstract
The utility model relates to a drilling rod back pressure prevents spouting sealed plugging device, its technical scheme is: including main part, bearing, sealing mechanism, bush, pressure cap, the main part is the toper structure, and the inside of main part is hollow structure, the front end stationary support seat of main part, the inside of main part is equipped with sealing mechanism, sealing mechanism's front end to pass through the bearing fixed, sealing mechanism's rear end pass through the bush and connect, the outer tip of bush through pressing the cap fixed, sealing mechanism include rocket body, riser, spring, the rocket body on be equipped with the spring, the spring lie in between riser and the bush riser sealing connection on the interior tip of bush and the sealing mechanism, the beneficial effects of the utility model are that: simple structure, convenient to use has effectively improved drilling operation efficiency, prevents that ground voltol oil air current in place gets into the drilling tool hydrophthalmia in the work, guarantees the normal work of rig.
Description
Technical field
The utility model relates to a kind of drilling equipment, particularly a kind of drilling rod back pressure blowout prevention sealing and plugging device.
Background technology
In drilling well, kelly bar, drilling rod, drill collar etc. with cooperation joint couple together composition downhole pipe string, be called drill string.Transmission, the mud circulation of drillng operation medium power and such as core, process other operations such as complex situations, drillstem test, all will rely on drill string to carry out.Thus drill string is the hinge of UNICOM ground and underground, is in very consequence.Drilling rod back pressure valve is a kind of drilling tool of special construction, and drilling rod back pressure valve at work stratum inner high voltage gas stream enters drilling tool water hole, causes rig to work, affects normal drillng operation.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, provides a kind of drilling rod back pressure blowout prevention sealing and plugging device.
Its technical scheme is: comprise main body, supporting base, sealing mechanism, lining, pressure cap, the tapered structure of main body, the inside of main body is hollow structure, the front end fixed mounting base of described main body, the inside of main body is provided with sealing mechanism, the front end of described sealing mechanism is fixed by supporting base, the rear end of described sealing mechanism is connected by lining, the outer end of described lining is fixed by pressure cap, described sealing mechanism comprises seal, telescopic head, spring, seal is structure conically, the front end of seal is provided with telescopic head, the centre of seal is provided with cavity, telescopic head is provided with spring, described spring is between telescopic head and pressure cap, described lining and seal are tightly connected.
Wherein, the centre of pressure cap is provided with lifter cavity, and telescopic head is located by lifter cavity through lifter cavity.
Wherein, the inner end of lining is conical entrance, and the inner end of lining is provided with sealing mat.
Wherein, the seal face of seal and lining is conical structure, and the conical entrance of seal and lining is combined closely.
The beneficial effects of the utility model are: structure is simple, easy to use, effectively improves drillng operation efficiency, prevents stratum inner high voltage gas stream in work and enter drilling tool water hole, ensure the normal work of rig.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is structural representations of sealing mechanism;
In upper figure: main body 1, supporting base 2, sealing mechanism 3, lining 4, pressure cap 5, sealing mat 6, seal 3.1, telescopic head 3.2, spring 3.3, lifter cavity 5.1.
Detailed description of the invention
1-2 by reference to the accompanying drawings, the utility model will be further described:
The utility model comprises main body 1, supporting base 2, sealing mechanism 3, lining 4, pressure cap 5, the tapered structure of main body 1, the inside of main body 1 is hollow structure, the front end fixed mounting base 2 of described main body 1, the inside of main body 1 is provided with sealing mechanism 3, the front end of described sealing mechanism 3 is fixed by supporting base 2, the rear end of described sealing mechanism 3 is connected by lining 4, the outer end of described lining 4 is fixed by pressure cap 5, described sealing mechanism 3 comprises seal 3.1, telescopic head 3.2, spring 3.3, seal 3.1 conically structure, the front end of seal 3.1 is provided with telescopic head 3.2, the centre of seal 3.1 is provided with cavity, telescopic head 3.2 is provided with spring 3.3, described spring 3.3 is between telescopic head 3.2 and pressure cap 5, described lining 4 is tightly connected with seal 3.1.
Wherein, the centre of pressure cap 5 is provided with lifter cavity 5.1, and telescopic head 3.2 is located by lifter cavity 5.1 through lifter cavity 5.1.
Wherein, the inner end of lining 4 is conical entrance, and the inner end of lining 4 is provided with sealing mat 6.
Wherein, seal 3.1 is conical structure with the seal face of lining, and seal 3.1 is combined closely with the conical entrance of lining 4.
Operating principle: when there is backflow, the seal 3.1 of sealing mechanism 3 presses lining 4, liquid not by sealing mechanism 3 to upper reaches, during drilling fluid normal circulation, sealing mechanism 3 is fallen on supporting base 2, and drilling fluid passes through sealing mechanism 3 without pressure drop, ensure that the normal operation of drilling equipment, prevent stratum inner high voltage gas stream in work and enter drilling tool water hole, ensure the normal work of rig.
Claims (4)
1. a drilling rod back pressure blowout prevention sealing and plugging device, it is characterized in that: comprise main body, supporting base, sealing mechanism, lining, pressure cap, the tapered structure of main body, the inside of main body is hollow structure, the front end fixed mounting base of described main body, the inside of main body is provided with sealing mechanism, the front end of described sealing mechanism is fixed by supporting base, the rear end of described sealing mechanism is connected by lining, the outer end of described lining is fixed by pressure cap, described sealing mechanism comprises seal, telescopic head, spring, seal is structure conically, the front end of seal is provided with telescopic head, the centre of seal is provided with cavity, telescopic head is provided with spring, described spring is between telescopic head and pressure cap, described lining and seal are tightly connected.
2. drilling rod back pressure blowout prevention sealing and plugging device according to claim 1, is characterized in that: the centre of described pressure cap is provided with lifter cavity, and telescopic head is located by lifter cavity through lifter cavity.
3. drilling rod back pressure blowout prevention sealing and plugging device according to claim 1, is characterized in that: the inner end of described lining is conical entrance, and the inner end of lining is provided with sealing mat.
4. drilling rod back pressure blowout prevention sealing and plugging device according to claim 1, it is characterized in that: described seal and the seal face of lining are conical structure, the conical entrance of seal and lining is combined closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520888557.3U CN205078232U (en) | 2015-11-09 | 2015-11-09 | Drilling rod back pressure prevents spouting sealed plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520888557.3U CN205078232U (en) | 2015-11-09 | 2015-11-09 | Drilling rod back pressure prevents spouting sealed plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078232U true CN205078232U (en) | 2016-03-09 |
Family
ID=55430646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520888557.3U Expired - Fee Related CN205078232U (en) | 2015-11-09 | 2015-11-09 | Drilling rod back pressure prevents spouting sealed plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078232U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481295A (en) * | 2016-12-15 | 2017-03-08 | 成都市卓新实业有限公司 | A kind of back pressure valve |
| CN114233204A (en) * | 2021-12-08 | 2022-03-25 | 江苏和信石油机械有限公司 | Drilling and pumping integrated gas drill rod structure |
| CN114412408A (en) * | 2022-01-06 | 2022-04-29 | 中国地质科学院探矿工艺研究所 | Water burst blocking device in drilling hole for horizontal rope coring |
-
2015
- 2015-11-09 CN CN201520888557.3U patent/CN205078232U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106481295A (en) * | 2016-12-15 | 2017-03-08 | 成都市卓新实业有限公司 | A kind of back pressure valve |
| CN114233204A (en) * | 2021-12-08 | 2022-03-25 | 江苏和信石油机械有限公司 | Drilling and pumping integrated gas drill rod structure |
| CN114412408A (en) * | 2022-01-06 | 2022-04-29 | 中国地质科学院探矿工艺研究所 | Water burst blocking device in drilling hole for horizontal rope coring |
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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: 20160309 Termination date: 20161109 |