CN204878911U - Downhole safety valve - Google Patents
Downhole safety valve Download PDFInfo
- Publication number
- CN204878911U CN204878911U CN201520636688.2U CN201520636688U CN204878911U CN 204878911 U CN204878911 U CN 204878911U CN 201520636688 U CN201520636688 U CN 201520636688U CN 204878911 U CN204878911 U CN 204878911U
- Authority
- CN
- China
- Prior art keywords
- upper connection
- piston head
- valve body
- head
- push rod
- 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 provides a downhole safety valve, can dismantle top connection, valve body, the lower clutch of connection in proper order including from the top down, the top connection is the sealed hollow cylinder structure in top, position that top connection inner chamber and piston head correspond is equipped with a cavity that matches with the piston head upper end, the valve body is including the piston head, interior cylinder liner, the outer cylinder bushing that connect gradually from inside to outside, the lower extreme of piston head is connected with the thrust head, the thrust head is connected with the push rod, the push rod lower extreme is equipped with sealed conical head, position that lower clutch bottom and conical head correspond is equipped with one and the disk seat of conical head matching. The utility model discloses safety valve body is detachable construction, and is easy to assemble, has improved the security performance of high -pressure underground gas storage well work, has reduced the incident that the human error leads to.
Description
Technical field
The utility model relates to a kind of storm valve of well for storage of high pressure gas.
Background technique
Due to the generally application of CNG technology, constantly increase using compressed natural gas (CNG) as the high pressure gas filling station of supply, CNG well for storage also enters the visual field of people.And in the manufacturing operation process of reality, underground high-voltage gas storage well is often found following several problem: parts Problems existing such as the potential safety hazard that burn into side leakage, shaft bottom end socket exist and technological deficiency, drainage device exists in the well of shaft bottom potential safety hazard and control heads.And the high-pressure gas storage well major part in CNG gas station is built in the intensive city of Crowds Distribute, rock gas, once reveal and be gathered in surrounding environment, will become the major hidden danger of serious accident, and may lead to irremediable having a strong impact on.Existing valve body of safety valve is generally integral structure simultaneously, and it is more inconvenient to assemble.
Model utility content
The utility model proposes and a kind ofly avoid natural gas leaking in gas storage well, storm valve easy to assembly.
The technical solution of the utility model is achieved in that a kind of storm valve, comprise removably connect successively from top to bottom upper connection, valve body, lower contact, described upper connection is the hollow cylindrical structure of end sealing, and the position that described upper connection inner chamber is corresponding with piston head is provided with a cavity mated with piston head upper end;
Described valve body comprises the piston head, inner cylinder liner, the outer cylinder sheath that connect successively from inside to outside, and the lower end of described piston head is connected with thrust head, and described thrust head is connected with push rod, and Packed conehead is established in described push rod lower end;
Position corresponding with conehead bottom described lower contact is provided with a valve seat mated with conehead.
Wherein, the outer wall of described valve body is provided with outside thread near the position of end, and the position that described upper connection, lower contact are connected with valve body is provided with internal thread.
Particularly, described upper connection has two oilholes, wherein an oilhole is positioned at upper connection central position, and another oilhole is positioned at upper joint edges position.
Further, the upper end of described piston head is socketed in the cavity in upper connection, and the joint of described piston head and upper connection cavity is provided with seal ring.
Further, the position near thrust head on described push rod is provided with snap ring.
Further, described outer cylinder sheath is connected with buckle between valve body.
Further, the position near snap ring on described push rod is provided with spring tray.
Compared with prior art, the beneficial effects of the utility model are: safety valve is demountable structure, easy disassembly, in well for storage of high pressure gas, by injection liquid force feed, make safety valve achieve the function of independently opening and closing, improve the Safety performance of high pressure underground gas well work; The safety valve of the design has Liang Ge hydraulic chamber, decreases the security incident that human error causes; Adopt special upper connection, valve body and lower contact structure, mutually assemble, the moment that safety valve opens or closes gets final product venting pressure, increases the service life, reduce costs while energy-conservation; Structure is simple, and be easy to operation, practicability is good.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that the utility model valve body partly cuts open structural representation.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
See Fig. 1, a kind of storm valve, comprise removably connect successively from top to bottom upper connection 3, valve body 2, lower contact 1, described upper connection 3 is the hollow cylindrical structure of end sealing, and the position that described upper connection 3 inner chamber is corresponding with piston head 4 is provided with a cavity mated with piston head 4 upper end; Described valve body 2 comprises the piston head 4, inner cylinder liner 6, the outer cylinder sheath 7 that connect successively from inside to outside, and the lower end of described piston head 4 is connected with thrust 9, and described thrust 9 is connected with push rod 13, and Packed conehead 14 is established in described push rod 13 lower end; Bottom described lower contact 1, the position corresponding with conehead 14 is provided with a valve seat 15 mated with conehead 14.
Described valve body 2 body is a hollow cylinder, one end of described valve body 2 is one-body molded annular protrusion, the depressed part of a hollow is also provided with in described valve body 2, one end of described depressed part is connected with projection, the other end connects " convex " shape circular cylindrical cavity logical in, and the bottom of described " convex " shape circular cylindrical cavity makes the inner chamber bottom it form a circular groove to in-flanges.Structure is simple, and the structure matching of valve body 2 inner chamber and outer cylinder sheath 7, inner cylinder liner 6, piston head 4, thrust 9, push rod 13 and spring 12, be convenient to install, improve efficiency of assembling, cost is low, is easy to realization.
The utility model can valve body of safety valve 2 be demountable structure, and convenient installation, in well for storage of high pressure gas, by injection liquid force feed, makes safety valve achieve the function of independently opening and closing, improve the Safety performance of high pressure underground gas well work; The safety valve of the design has Liang Ge hydraulic chamber, decreases the security incident that human error causes; Adopt dismountable upper connection 3, valve body 2 and lower contact 1 structure, mutually assemble, the moment that safety valve opens or closes gets final product venting hydraulic coupling, increases the service life, reduce costs while energy-conservation; Structure is simple, and be easy to operation, practicability is good.
Wherein, the outer wall of described valve body 2 is provided with outside thread near the position of end, and the position that described upper connection 3, lower contact 1 are connected with valve body 2 is provided with internal thread.Be convenient to handling, be easy to operation,
Particularly, described upper connection 3 has two oilholes, wherein an oilhole is positioned at upper connection 3 central position, and another oilhole is positioned at upper connection 3 marginal position.When needs carry out closing process to safety valve, hydraulic oil is pressed into from the RC oilhole of upper connection 3 by oil hydraulic pump; When needing to open the safety valve be under closed condition, only hydraulic oil need be injected from the oilhole being in upper connection 3 edge.
The upper end of described piston head 4 is socketed in the cavity in upper connection 3, and described piston head 4 is provided with seal ring 5 with the joint of upper connection 3 upper cavity, plays sealing and alleviates the effect rubbed.
Described push rod 13 is provided with snap ring 10 near the position of thrust 9, makes the connection before push rod 13 and thrust 9 more firm.Described thrust between 9 with push rod 13 employing activity bulb be connected, can automatic deviation correction, levelling.
Described outer cylinder sheath 7 is connected with buckle 8 between valve body 2, easy accessibility.
Described push rod 13 is provided with spring 12 near the position of snap ring 10, when mounted by spring fitting in valve body 2 in circular groove, lower spring end is fixed on flange, and upper end is fixed by spring tray 11.
Described outer cylinder sheath 7 body is hollow cylindrical structure, and the lower end of described outer cylinder sheath 7 has four chutes.
When needs carry out closing process to safety valve, hydraulic oil is pressed into from the RC oilhole of upper connection 3 by oil hydraulic pump, promote piston head 4, thrust 9 is moved downward, until slide into outer cylinder sheath 7 lower end, and skid off along the chute of outer cylinder sheath 7 inside bottom, then because spring-compressed produces thrust, the another one chute that push rod 13 promotes thrust 9 adjacent inside outer cylinder sheath 7 up moves, till moving to when chute blocks topmost, thrust 9 is down moved against push rod 13, when thrust 9 to stick into inside outer cylinder sheath 7 in chute time, push rod 13 lower end is overlapped and is just in time entered on the valve seat 15 in lower street corner, the connection of ground passage and gas storage well is cut off, then the pressure on liquid controling pipe line can just be shed, close whole safety valve.
When needing to open the safety valve be under closed condition, only hydraulic oil need be injected from the oilhole being in upper connection 3 edge, promote inner cylinder liner 6 down to move, and then down can move together against thrust 9 bottom inner cylinder liner 6, when thrust 9 slips down to outer cylinder sheath 7 inside bottom, chute along outer cylinder sheath 7 inside bottom is skidded off, then due to spring thrust, the another one chute that push rod 13 promotes thrust 9 adjacent inside outer cylinder sheath 7 up moves, during this time just can shed the pressure on liquid controling pipe line, thrust 9 will move to chute and topmost block, now the piston head 4 at center is also pushed up go back to original position by thrust 9, rock gas is had to discharge in the exhaust port of safety valve lower end, safety valve is fully opened.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a storm valve, it is characterized in that: comprise removably connect successively from top to bottom upper connection, valve body, lower contact, described upper connection is the hollow cylindrical structure of end sealing, and the position that described upper connection inner chamber is corresponding with piston head is provided with a cavity mated with piston head upper end;
Described valve body comprises the piston head, inner cylinder liner, the outer cylinder sheath that connect successively from inside to outside, and the lower end of described piston head is connected with thrust head, and described thrust head is connected with push rod, and Packed conehead is established in described push rod lower end;
Position corresponding with conehead bottom described lower contact is provided with a valve seat mated with conehead.
2. storm valve according to claim 1, is characterized in that: the outer wall of described valve body is provided with outside thread near the position of end, and the position that described upper connection, lower contact are connected with valve body is provided with internal thread.
3. storm valve according to claim 1, is characterized in that: described upper connection top has two oilholes, and wherein an oilhole is positioned at the central position of upper connection, and another oilhole is positioned at the marginal position of upper connection.
4. storm valve according to claim 1, is characterized in that: the upper end of described piston head is socketed in the cavity in upper connection, and the joint of described piston head and upper connection cavity is provided with seal ring.
5. storm valve according to claim 1, is characterized in that: the position near thrust head on described push rod is provided with snap ring.
6. storm valve according to claim 1, is characterized in that: described outer cylinder sheath is connected with buckle between valve body.
7. storm valve according to claim 5, is characterized in that: the position near snap ring on described push rod is provided with spring tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636688.2U CN204878911U (en) | 2015-08-21 | 2015-08-21 | Downhole safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520636688.2U CN204878911U (en) | 2015-08-21 | 2015-08-21 | Downhole safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204878911U true CN204878911U (en) | 2015-12-16 |
Family
ID=54823285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520636688.2U Expired - Fee Related CN204878911U (en) | 2015-08-21 | 2015-08-21 | Downhole safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204878911U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737227A (en) * | 2019-01-29 | 2019-05-10 | 湖北三江航天红峰控制有限公司 | Safety valve |
| CN111236895A (en) * | 2020-02-24 | 2020-06-05 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
-
2015
- 2015-08-21 CN CN201520636688.2U patent/CN204878911U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737227A (en) * | 2019-01-29 | 2019-05-10 | 湖北三江航天红峰控制有限公司 | Safety valve |
| CN111236895A (en) * | 2020-02-24 | 2020-06-05 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
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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: 20151216 Termination date: 20170821 |