CN201521281U - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN201521281U CN201521281U CN2009202195367U CN200920219536U CN201521281U CN 201521281 U CN201521281 U CN 201521281U CN 2009202195367 U CN2009202195367 U CN 2009202195367U CN 200920219536 U CN200920219536 U CN 200920219536U CN 201521281 U CN201521281 U CN 201521281U
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- CN
- China
- Prior art keywords
- assembly
- spring
- plunger
- sliding sleeve
- safety valve
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- 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 - Lifetime
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Abstract
The utility model relates to a safety valve which simplifies auxiliary tools and crafts of a common safety valve. A hydraumatic passage is arranged at the upper part of a mounting and traveling passage of a plunger piston assembly and communicated with the outside; the step part of a step cylinder (7) is embedded into an open slot at the lower part of the plunger piston assembly (3); sliding sleeves (9) are respectively positioned and supported on the step cylinder (7) through retainer rings (6) and sliding sleeve (9) steps; a return spring (10) is arranged in an annulus between the sliding sleeve (9) and a connecting cylinder (4), and the top part and the bottom part of the return spring respectively prop a spring seat (8) and a spring lower seat (11); seal rings (13) are arranged between the sliding sleeves (9) and a valve seat (12); and the valve seat (12) is hinged with a valve plate (14), and equipped with a twisting moment spring. The safety valve has the advantages of simple structure and convenient use, and can artificially control the switch of a borehole without other auxiliary tools or crafts.
Description
Technical field
The utility model relates in the processes such as a kind of oil exploitation, well workover, stimulation work and needs repeatedly to open, close well to guarantee the safety valve of job safety.
Background technology
In processes such as oil exploitation, well workover, stimulation work, in the operations such as particularly gas well exploitation, well workover, for guaranteeing that operation carries out and job safety smoothly, need repeatedly opening and closing well so that being lowered to etc. of instrument, pipe string, valve generally safe in utilization can reach above purpose.Conventional safety valve need increase the switch that other aids and technology are come the Artificial Control well usually, complex process, and operation is inconvenience comparatively.
Summary of the invention
In order to solve the problem that exists in the background technology, the utility model provides a kind of safety valve, simplifies conventional safety valve aid and technology.
A kind of safety valve mainly partly is made up of upper body, following body, assembly for plunger, connecting cylinder, supporting positive cover, back-up ring, step tube, spring base, sliding sleeve, back-moving spring, spring lower seat, valve seat, sealing ring, valve plate, lower contact etc.Upper body of the present utility model and following body, time body and connecting cylinder, connecting cylinder and lower contact all adopt screw thread and end step, conical surface combination sealing mode to seal.Be reserved with on the following body wall that the hydraulic channel that is connected and assembly for plunger are installed, the stroke passage.Hydraulic channel one end is reserved with screwed hole; Hydraulic channel is positioned at assembly for plunger installation, stroke passage top and hydraulic channel and is in communication with the outside; There is angle between hydraulic channel and assembly for plunger installation, the stroke passage.Assembly for plunger is installed, stroke passage bottom is connected with screw thread with supporting positive cover.Assembly for plunger places in assembly for plunger installation, the stroke passage, and assembly for plunger adopts the damping sealing.The assembly for plunger bottom is reserved with open slot, and step tube step part embeds in this open slot.Sliding sleeve is by one and above back-up ring and sliding sleeve step located respectively, load-bearing is on step tube, spring base.Back-moving spring places in the annular space between sliding sleeve and the connecting cylinder, and back-moving spring top and spring base offset, and the back-moving spring bottom offsets with spring lower seat.Sliding sleeve and following body, spring base, spring lower seat be for being slidingly matched, and sliding sleeve and valve base chamber are reserved with sealing ring.Sealing ring is installed in to reserve in the valve seat also slightly is longer than the valve seat lower end surface on the step.Valve seat and valve plate are hinged, and torsion spring is installed.
The utility model major advantage is: the utility model is simple in structure, easy to use, can be under the situation that need not increase any other aid and technology the switch of Artificial Control well, thereby reduced the generation of unacceptable accidents such as overflow, blowout to greatest extent.
Description of drawings
Fig. 1 the utility model structural representation
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further details.
A kind of as shown in Figure 1 safety valve mainly partly is made up of upper body 1, following body 2, assembly for plunger 3, connecting cylinder 4, supporting positive cover 5, back-up ring 6, step tube 7, spring base 8, sliding sleeve 9, back-moving spring 10, spring lower seat 11, valve seat 12, sealing ring 13, valve plate 14, lower contact 15 etc.Upper body of the present utility model 1 and following body 2, body 2 and connecting cylinder 4, connecting cylinder 4 and lower contact 15 all adopt screw thread and end step, conical surface combination sealing mode to seal down.Be reserved with on following body 2 walls that the hydraulic channel that is connected and assembly for plunger are installed, the stroke passage.Hydraulic channel one end is reserved with screwed hole; Hydraulic channel is positioned at assembly for plunger installation, stroke passage top and hydraulic channel and is in communication with the outside; There is angle between hydraulic channel and assembly for plunger installation, the stroke passage.Assembly for plunger is installed, stroke passage bottom is connected with screw thread with supporting positive cover.Assembly for plunger 3 places in assembly for plunger installation, the stroke passage, and assembly for plunger 3 adopts the dampings sealing.Assembly for plunger 3 bottoms are reserved with open slot, and step tube 7 step parts embed in this open slot.Sliding sleeve 9 is by one and above back-up ring 6, sliding sleeve 9 steps are located respectively, load-bearing is on step tube 7, spring base 8.Back-moving spring 10 places in the annular space between sliding sleeve 9 and the connecting cylinder 4, and back-moving spring 10 tops and spring base 8 offset, and back-moving spring 10 bottoms and spring lower seat 11 offset.Sliding sleeve 9 and following body 2, spring base 8, spring lower seat 11 be for being slidingly matched, and sliding sleeve 9 and 12 of valve seats are reserved with sealing ring 13.Sealing ring 13 is installed in to reserve in the valve seat 12 also slightly is longer than valve seat 12 lower end surface on the step.Valve seat 12 is hinged with valve plate 13, and torsion spring is installed.
When the utility model uses: ground control system is connected by a hydraulic line with the utility model, and the utility model is connected on the production string, be lowered to design attitude.When need were opened well, by the ground control system output pressure, assembly for plunger 3 was under the pressure effect of control system, and drive step tube 7, spring base 8, sliding sleeve 9 move down, and open wells thereby push valve plate 14 open, and back-moving spring 10 is compressed in this process.When the need closed-in well at the moment, the ground system output pressure is adjusted into 0, step tube 7, spring base 8, sliding sleeve 9, assembly for plunger 3 move under back-moving spring 5 effects, and valve plate 14 rotates under the torsion spring effect and contacts the final plant closure well with sealing ring 13, valve seat 12 successively.
When not having the pipe string by the utility model inner chamber place, if well head catches fire, hydraulic line is by calcination, and input pressure is reduced to 0, and valve plate 14 can also reset, and realizes the purpose of automatic closing well.
Claims (6)
1. a safety valve mainly is made up of upper body (1), following body (2), assembly for plunger (3), connecting cylinder (4), supporting positive cover (5), back-up ring (6), step tube (7), spring base (8), sliding sleeve (9), back-moving spring (10), spring lower seat (11), valve seat (12), sealing ring (13), valve plate (14), lower contact parts such as (15); Upper body (1) and following body (2), body (2) and connecting cylinder (4), connecting cylinder (4) and lower contact (15) all adopt screw thread and end step, conical surface combination sealing mode to seal down; Assembly for plunger (3) places in assembly for plunger installation, the stroke passage, and assembly for plunger (3) adopts the damping sealing; It is characterized in that: be reserved with on following body (2) wall that the hydraulic channel that is connected and assembly for plunger are installed, the stroke passage; Hydraulic channel is positioned at assembly for plunger installation, stroke passage top and hydraulic channel and is in communication with the outside; Supporting positive cover (5) is connected with following body (2); Assembly for plunger (3) bottom is reserved with open slot, and step tube (7) step part embeds in this open slot; Sliding sleeve (9) by back-up ring (6), sliding sleeve (9) step locate respectively, load-bearing is on step tube (7), spring base (8); Back-moving spring (10) places in the annular space between sliding sleeve (9) and the connecting cylinder (4), and back-moving spring (10) top and spring base (8) offset, and back-moving spring (10) bottom offsets with spring lower seat (11); Sliding sleeve (9) and following body (2), spring base (8), spring lower seat (11) be for being slidingly matched, and be reserved with sealing ring (13) between sliding sleeve (9) and valve seat (12); Valve seat (12) is hinged with valve plate (14), and torsion spring is installed.
2. a kind of safety valve according to claim 1 is characterized in that: following body (2) hydraulic channel one end is reserved with screwed hole.
3. a kind of safety valve according to claim 1 is characterized in that: supporting positive cover (5) is by the assembly for plunger installation, the stroke passage bottom that are threaded in down on the body (2).
4. a kind of safety valve according to claim 1 is characterized in that: the quantity of back-up ring (6) is more than or equal to one.
5. a kind of safety valve according to claim 1 is characterized in that: sealing ring (13) is installed in to reserve in the valve seat (12) also slightly is longer than valve seat (12) lower end surface on the step.
6. a kind of safety valve according to claim 1 is characterized in that: have angle between hydraulic channel and assembly for plunger installation, the stroke passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202195367U CN201521281U (en) | 2009-09-25 | 2009-09-25 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202195367U CN201521281U (en) | 2009-09-25 | 2009-09-25 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521281U true CN201521281U (en) | 2010-07-07 |
Family
ID=42507457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202195367U Expired - Lifetime CN201521281U (en) | 2009-09-25 | 2009-09-25 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521281U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392619A (en) * | 2011-07-21 | 2012-03-28 | 北京华油油气技术开发有限公司 | Oil tube carrying recoverable subsurface safety valve |
| CN102400662A (en) * | 2011-11-21 | 2012-04-04 | 中国海洋石油总公司 | Pluggable oil-layer anti-leakage valve |
| CN102409998A (en) * | 2011-10-28 | 2012-04-11 | 中国海洋石油总公司 | Downhole safety valve |
| CN102661130A (en) * | 2012-05-03 | 2012-09-12 | 中国石油集团西部钻探工程有限公司 | By-pass type oil pipe float valve |
| CN102817584A (en) * | 2012-02-20 | 2012-12-12 | 长沙市罡拓能源科技有限公司 | Full bore subsurface safety valve |
| CN105569608A (en) * | 2015-12-08 | 2016-05-11 | 中国海洋石油总公司 | Dual-control downhole safety valve |
| CN106285561A (en) * | 2015-05-15 | 2017-01-04 | 中国石油天然气股份有限公司 | Downhole safety valve system |
| CN110206509A (en) * | 2019-05-24 | 2019-09-06 | 中国地质科学院地质力学研究所 | A kind of water level differential pressure control valve |
| CN114427362A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Temporary plugging method for well completion |
-
2009
- 2009-09-25 CN CN2009202195367U patent/CN201521281U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392619A (en) * | 2011-07-21 | 2012-03-28 | 北京华油油气技术开发有限公司 | Oil tube carrying recoverable subsurface safety valve |
| CN102409998A (en) * | 2011-10-28 | 2012-04-11 | 中国海洋石油总公司 | Downhole safety valve |
| CN102409998B (en) * | 2011-10-28 | 2014-08-13 | 中国海洋石油总公司 | Downhole safety valve |
| CN102400662B (en) * | 2011-11-21 | 2015-04-22 | 中国海洋石油总公司 | Pluggable oil-layer anti-leakage valve |
| CN102400662A (en) * | 2011-11-21 | 2012-04-04 | 中国海洋石油总公司 | Pluggable oil-layer anti-leakage valve |
| CN102817584A (en) * | 2012-02-20 | 2012-12-12 | 长沙市罡拓能源科技有限公司 | Full bore subsurface safety valve |
| CN102817584B (en) * | 2012-02-20 | 2015-03-11 | 长沙市罡拓能源科技有限公司 | Full bore subsurface safety valve |
| CN102661130A (en) * | 2012-05-03 | 2012-09-12 | 中国石油集团西部钻探工程有限公司 | By-pass type oil pipe float valve |
| CN102661130B (en) * | 2012-05-03 | 2015-07-08 | 中国石油集团西部钻探工程有限公司 | By-pass type oil pipe float valve |
| CN106285561A (en) * | 2015-05-15 | 2017-01-04 | 中国石油天然气股份有限公司 | Downhole safety valve system |
| CN106285561B (en) * | 2015-05-15 | 2019-05-07 | 中国石油天然气股份有限公司 | Downhole safety valve system |
| CN105569608A (en) * | 2015-12-08 | 2016-05-11 | 中国海洋石油总公司 | Dual-control downhole safety valve |
| CN110206509A (en) * | 2019-05-24 | 2019-09-06 | 中国地质科学院地质力学研究所 | A kind of water level differential pressure control valve |
| CN110206509B (en) * | 2019-05-24 | 2022-05-27 | 中国地质科学院地质力学研究所 | Water level differential pressure control valve |
| CN114427362A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Temporary plugging method for well completion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |