CN205173521U - Prevent leakage control valve - Google Patents
Prevent leakage control valve Download PDFInfo
- Publication number
- CN205173521U CN205173521U CN201520909045.0U CN201520909045U CN205173521U CN 205173521 U CN205173521 U CN 205173521U CN 201520909045 U CN201520909045 U CN 201520909045U CN 205173521 U CN205173521 U CN 205173521U
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- CN
- China
- Prior art keywords
- spool
- conical surface
- valve body
- case
- seat
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Abstract
The utility model discloses a prevent leakage control valve, the rear end of its valve body is fixed with the disk seat, slide and be equipped with the case in the hole middle section of valve body, the cover is equipped with outer spring on the case, the both ends of outer spring compress tightly respectively between disk seat and case, the preceding port department of the hole of disk seat has the throat towards the conical surface of rear end, the back end department of case has the sealed complex conical surface of the conical surface with the disk seat, before the case end department have with valve body hole pore wall on the conical surface that sets up seal up the complex conical surface. The utility model discloses a case front end can cooperate with body seals, and the rear end can cooperate with valve seat seal to the cover is equipped with the outer spring that compresses tightly between case and disk seat on the case, when the normotension of case both ends, and under the effect of outer spring, the front end and the valve body cooperation of case, when leaking appeared in the pipeline at rear, the pressure of case rear end reduced in the twinkling of an eye, and under the effect of end pressure power, the pressure that outer spring is overcome to the case moves backward and cooperates with valve seat seal in the front, and closing of realization pipeline prevents to reveal.
Description
Technical field
The utility model relates to a kind of anti-leak control valve, particularly relate to a kind of hydraulic fluid pipeline outlet being applicable to be arranged in drilling well control device, when the hydraulic line outside control gear damages suddenly and tubing leak occurs, hydraulic line can be closed in time, reduce the anti-leak control valve of the loss of hydraulic oil.
Background technique
At present, control system of ground preventer all assembles according to the preventer number processing of NBS and control, meet the needs of well site blowout preventer operator, but the hydraulic fluid leak event that control system device causes to the unexpected damage of the liquid controling pipe line of drilling well-head preventer, particularly during operation of oil pump, liquid controling pipe line is not closed automatically, hydraulic oil can be caused with the leakage of pipeline, cause hydraulic oil loss, environmental pollution, and cause cannot manipulate owing to there is no hydraulic oil during operation, affect the normal running of drilling well control.
Model utility content
The purpose of this utility model is to provide a kind of anti-leak control valve, does not automatically close, hydraulic oil can be caused with the problem of the leakage of pipeline to solve in prior art because of liquid controling pipe line.
In order to realize above object, the utility model adopts following technological scheme: a kind of anti-leak control valve, the valve body of tubular, the front end of valve body is used for being connected with pipeline, the rear end of valve body is fixedly plugged with the valve seat of tubular, the endoporus stage casing slidable fit of valve body has spool, the outer circumferential face of spool is arranged with outer spring, the two ends of outer spring are pressed between valve seat and spool respectively, the front port place of the endoporus of valve seat has the conical surface of reducing towards rear end, the follower head place of spool has the conical surface coordinated with the conical surface seal of valve seat, spool front end place is provided with the conical surface coordinated with the conical surface seal that valve body inner bore hole wall is arranged.
There is in described spool the shoulder hole that back segment is reduced diameter section, the endoporus leading portion of spool is fixed with inner seat, slide in the endoporus of spool and be provided with inner core, the front end of inner core is the enlarging conical surface toward the front, the step surface of the shoulder hole of spool is form with the conical surface of inner core the conical surface be sealed and matched, inner core slides and is plugged in the pilot hole that Inner seat is offered, inner core is arranged with interior spring, the two ends of interior spring respectively elastic top are pressed on Inner seat and inner core, Inner seat offer the via of the enlarged diameter section being communicated with the endoporus leading portion of valve body and the shoulder hole of inner core.
Described spool offers the current limliting via of the enlarged diameter section of the shoulder hole being communicated with valve body inner bore stage casing and inner core.
The endoporus leading portion of described valve body has the screw thread for being connected with pipeline.
Described valve seat is threaded connection and is fixedly plugged in valve rear end.
The endoporus hole wall of described valve seat is provided with the screw thread for being connected with pipeline.
Valve rear end of the present utility model is fixedly plugged with valve seat, in valve body, the front end of the spool of slidable fit can coordinate with valve seal, rear end can coordinate with valve base sealing, and valve core upper sleeve is provided with the outer spring be pressed between spool and valve seat, under the normal state of spool pressure at two ends, under the effect of spring outside, the front end of spool coordinates with valve body, when leaking appears in the pipeline at the utility model rear, the pressure moment of spool rear end significantly reduces, under the effect of forefront pressure, spool moves after overcoming the pressure of outer spring and coordinates with valve base sealing, realize the closedown of pipeline, prevent from revealing.
There is in spool of the present utility model the shoulder hole that back segment is reduced diameter section, the endoporus leading portion of spool is fixed with inner seat, slide in the endoporus of spool and be provided with inner core, the front end of inner core is the enlarging conical surface toward the front, the step surface of the shoulder hole of spool is form with the conical surface of inner core the conical surface be sealed and matched, inner core slides and is plugged in the pilot hole that Inner seat is offered, inner core is arranged with interior spring, the two ends of interior spring respectively elastic top are pressed on Inner seat and inner core, Inner seat offers the via of the enlarged diameter section being communicated with the endoporus leading portion of valve body and the shoulder hole of inner core, when the pressure of spool rear end raises, inner core overcomes the pressure reach of interior spring, the front end of inner core is separated with spool, form valve seat endoporus, spool shoulder hole, the fluid passage that the via of Inner seat and valve body inner bore leading portion are communicated with, realize pressure to balance again.
Spool of the present utility model offers the current limliting via of the enlarged diameter section of the shoulder hole being communicated with valve body inner bore stage casing and inner core, when the pressure of spool front portion is slightly high, liquid by the via of Inner seat after the shoulder hole, current limliting via of spool through being flowed into the endoporus of valve seat by the gap between the spool follower head be separated and valve seat, realize pressure balance, certainly, when the pressure of spool rear end declines to a great extent, spool can under the effect of forefront pressure after move cut-out runner.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the utility model embodiment.
Embodiment
A kind of embodiment of anti-leak control valve, in FIG, its valve body 1 is tubular, has an endoporus, the leading portion of its endoporus is provided with internal thread, for being connected with pipeline, the rear end of valve body 1 is fixedly plugged with the valve seat 7 of tubular, and valve seat 7 is fixed on the rear end of valve body 1 by screw thread, spool 2 is had in the endoporus stage casing slidable fit of valve body 1, the front end of spool 2 and follower head are provided with the conical surface, and the enlarging of the conical surface of its front end is towards rear end, and the enlarging of termination is towards front end thereafter.The endoporus hole wall of valve body 1 has a step surface towards rear end, and this step surface is form with the conical surface of the front end of spool 2 conical surface be sealed and matched.Have the conical surface of reducing towards rear end at the front end position of the endoporus of valve seat 7, the conical surface of this conical surface and spool 2 follower head is formed and is sealed and matched.The outer circumferential face of spool 2 has towards the step surface of rear end, that is the periphery leading portion diameter of spool 2 is large, and back segment diameter is little.The outer circumferential face of valve seat 7 has towards the step surface of front end, that is the periphery leading portion diameter of valve seat 7 is little, back segment diameter is large, outer spring 4 is arranged with at the back segment of spool 1 outer circumferential face, the top, front end of outer spring 4 is pressed on the step surface on spool 2 outer circumferential face, the back segment top of outer spring 4 is pressed on the step surface of valve seat 7 outer circumferential face, and when the pressure difference in size of spool rear and front end is little, the follower head of the effect lower valve core of spring 4 and valve body 1 are sealed and matched outside.
Have the shoulder hole that back segment is reduced diameter section in spool 2, the step surface of the shoulder hole of spool is the conical surface of enlarging towards front end.Slide in the enlarged diameter section of the shoulder hole in spool 2 and be provided with inner core 6, the front end of inner core has the conical surface coordinated with the conical surface seal of the shoulder hole of spool 2, and inner core 6 is Step Shaft, and its leading portion diameter is less.Inner seat 3 is fixed with by screw thread at the front port place of the shoulder hole of spool 2, on the ear end face of Inner seat 3, one is extended backward directional post, the front-end face of Inner seat is provided with and extends back and extend to the pilot hole of directional post ear end face, pilot hole is shoulder hole, the diameter of its back segment is larger, the leading portion of inner core 6 to stretch in pilot hole and coordinates with the reduced diameter section slide-and-guide of pilot hole, the reduced diameter section of inner core 6 is arranged with interior spring 5, the top, front end of interior spring 5 is pressed on the step surface of pilot hole, the top, rear end of interior spring 5 is pressed on the step surface of inner core 6, under the effect of interior spring 5, front end and the spool 2 of inner core 6 are sealed and matched.The via 2 that endoporus leading portion Inner seat 3 being laid with connection spool 1 in the outside of directional post is communicated with the shoulder hole of spool 2.
Spool 2 offers current limliting via 2a, current limliting via 2a is radial hole, and the enlarged diameter section of valve body inner bore stage casing with the shoulder hole of inner core is communicated with by current limliting via 2a.
The endoporus leading portion of valve body 1 has the screw thread for being connected with pipeline, has the screw thread for being connected with pipeline in the endoporus of valve seat.
After anti-leak control valve has been assembled, be connected in pipeline, liquid come from valve seat 7 direction liquid mineralization pressure formed balance, simultaneously, there is a small amount of pipeline leakage and do not affect pipeline control, when valve seat 7 directional pressure loses suddenly, spool 2 pressure outside is caused to lose suddenly, current limliting via 2a cannot meet the requirement of conducting balance pressure, spool 2 moves right under the effect of the pressure, wedging ring is contained in the outer spring 4 on spool 2 stage casing, and allow the conical surface of spool 2 follower head match with valve seat 7 inner conical surface, form sealing, large earial drainage is avoided to occur, after pipeline recovers again, valve seat 7 directional pressure is higher than valve body 1 left end pressure, inner core 6 compresses interior spring 5, inner core 6 is separated with spool 2 inner conical surface and forms fluid passage, realize pressure to balance again.
Claims (6)
1. an anti-leak control valve, it is characterized in that: the valve body of tubular, the front end of valve body is used for being connected with pipeline, the rear end of valve body is fixedly plugged with the valve seat of tubular, the endoporus stage casing slidable fit of valve body has spool, the outer circumferential face of spool is arranged with outer spring, the two ends of outer spring are pressed between valve seat and spool respectively, the front port place of the endoporus of valve seat has the conical surface of reducing towards rear end, the follower head place of spool has the conical surface coordinated with the conical surface seal of valve seat, and spool front end place is provided with the conical surface coordinated with the conical surface seal that valve body inner bore hole wall is arranged.
2. anti-leak control valve according to claim 1, it is characterized in that: there is in described spool the shoulder hole that back segment is reduced diameter section, the endoporus leading portion of spool is fixed with inner seat, slide in the endoporus of spool and be provided with inner core, the front end of inner core is the enlarging conical surface toward the front, the step surface of the shoulder hole of spool is form with the conical surface of inner core the conical surface be sealed and matched, inner core slides and is plugged in the pilot hole that Inner seat is offered, inner core is arranged with interior spring, the two ends of interior spring respectively elastic top are pressed on Inner seat and inner core, Inner seat offers the via of the enlarged diameter section being communicated with the endoporus leading portion of valve body and the shoulder hole of inner core.
3. anti-leak control valve according to claim 2, is characterized in that: the current limliting via described spool offering the enlarged diameter section of the shoulder hole being communicated with valve body inner bore stage casing and inner core.
4. the anti-leak control valve according to claim 1 or 2 or 3, is characterized in that: the endoporus leading portion of described valve body has the screw thread for being connected with pipeline.
5. anti-leak control valve according to claim 4, is characterized in that: described valve seat is threaded connection and is fixedly plugged in valve rear end.
6. anti-leak control valve according to claim 1, is characterized in that: the endoporus hole wall of described valve seat is provided with the screw thread for being connected with pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909045.0U CN205173521U (en) | 2015-11-14 | 2015-11-14 | Prevent leakage control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909045.0U CN205173521U (en) | 2015-11-14 | 2015-11-14 | Prevent leakage control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205173521U true CN205173521U (en) | 2016-04-20 |
Family
ID=55737515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520909045.0U Active CN205173521U (en) | 2015-11-14 | 2015-11-14 | Prevent leakage control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205173521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077816A (en) * | 2016-05-30 | 2016-11-09 | 合肥航天液压机械有限公司 | Mining band saw |
-
2015
- 2015-11-14 CN CN201520909045.0U patent/CN205173521U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077816A (en) * | 2016-05-30 | 2016-11-09 | 合肥航天液压机械有限公司 | Mining band saw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180801 Address after: 100028 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee after: ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. SINOPEC, PIPE COMPANY Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Co-patentee after: SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. Address before: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Co-patentee before: ZHONGYUAN PETROLEUM ENGINEERING CO., LTD. SINOPEC, PIPE COMPANY Patentee before: SINOPEC OILFIELD SERVICE CORPORATION |
|
| TR01 | Transfer of patent right |