CN204703842U - A kind of protective valve - Google Patents
A kind of protective valve Download PDFInfo
- Publication number
- CN204703842U CN204703842U CN201520348775.8U CN201520348775U CN204703842U CN 204703842 U CN204703842 U CN 204703842U CN 201520348775 U CN201520348775 U CN 201520348775U CN 204703842 U CN204703842 U CN 204703842U
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- China
- Prior art keywords
- valve
- lower contact
- blanking plug
- protective
- valve ball
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Abstract
The utility model relates to oil drilling technology field, particularly a kind of protective valve, comprising: valve ball, blanking plug, lower contact and valve bonnet.Blanking plug is arranged on the inside of lower contact; Blanking plug, after being subject to thrust, departing from lower contact and enters flow string.The upper end of valve bonnet offers at least one through hole; Valve bonnet is fixedly connected with the upper end of lower contact.Valve ball is arranged on inside valve bonnet, and valve ball is arranged on the upper end of blanking plug, and valve ball is used under the effect of oil pipe hydraulic pressure, promoting blanking plug and lower contact departs from.The protective valve that the utility model embodiment provides; apply certain hydraulic pressure in oil pipe after; valve ball promotes blanking plug and moves down; blanking plug departs from from the lower end of lower contact and enters flow string; realize the effective sealing to flow string; ensure that normally carrying out of oil producing operation, avoid well head overflow, and protect ecological environment.
Description
Technical field
The utility model relates to oil drilling technology field, particularly a kind of protective valve.
Background technology
At oil-drilling field, well head pressure, more than the oil well of 14MPa, cannot seal flow string.When oil well pump is started working, owing to cannot seal flow string, cause the highly pressurised liquid in pit shaft to enter oil pipe through oil well pump, normally cannot carry out oil producing operation.In addition, owing to cannot seal flow string, cause well head pressure large, well head overflow is serious, heavy damage ecological environment.
Utility model content
The utility model embodiment, by providing a kind of protective valve, solves in prior art and cannot seal flow string, causes the highly pressurised liquid in pit shaft to enter oil pipe through oil well pump, normally cannot carry out the problem of oil producing operation.The utility model embodiment achieves effective sealing to flow string by providing a kind of protective valve, ensure that normally carrying out of oil producing operation, avoids well head overflow, protect ecological environment.
The utility model embodiment provides a kind of protective valve, and described protective valve is connected with the oil well pump being connected with oil pipe upper end when applying, and lower end is connected with flow string; Comprise: valve ball, blanking plug, lower contact and valve bonnet; Described blanking plug is arranged on the inside of described lower contact and is connected with described lower contact; After described blanking plug is subject to thrust, departs from described lower contact and enter described flow string.
The upper end of described valve bonnet offers at least one through hole, and described through hole is for conducting the hydraulic pressure in described oil pipe; Described valve bonnet is fixedly connected with the upper end of described lower contact.
Described valve ball is arranged on inside described valve bonnet, and described valve ball is arranged on the upper end of described blanking plug; Described valve ball is used under the effect of described oil pipe hydraulic pressure, promoting described blanking plug and described lower contact departs from.
Further, also comprise: valve seat; Described valve seat is arranged between described lower contact and described valve ball; The upper end of described blanking plug is through described valve seat.
Further, also comprise: sealing ring; Described sealing ring is arranged on described blanking plug; Described sealing ring is at least one.
Further, described sealing ring is O RunddichtringO.
Further, also comprise: position-limitting pin; Described blanking plug is connected with described lower contact by described position-limitting pin.
Further, the upper end of described lower contact and the inner side of described valve bonnet are provided with screw thread; Upper end and the described valve bonnet of described lower contact are spirally connected fixing.
One or more technical schemes that the utility model embodiment provides, at least have following technique effect or advantage:
1, the protective valve that provides of the utility model embodiment; apply certain hydraulic pressure in oil pipe after; valve ball promotes blanking plug and moves down; blanking plug departs from from the lower end of lower contact and enters flow string; realize the effective sealing to flow string; ensure that normally carrying out of oil producing operation, avoid well head overflow, and protect ecological environment.
2, the protective valve that the utility model embodiment provides is provided with valve seat, and after blanking plug departs from from the lower end of lower contact, valve ball drops on valve seat, can prevent valve ball from passing lower contact and be scattered in oil well, be convenient to reclaim valve ball.
3, the protective valve that the utility model embodiment provides is provided with at least one sealing ring; tightness between sealing ring adds inside blanking plug and lower contact; ensure that blanking plug can depart from from the lower end of lower contact normally and enter flow string under the impetus of valve ball, realize the sealing to flow string.
4, the sealing ring in the protective valve that provides of the utility model embodiment is O RunddichtringO, and good sealing effect, the cost of O RunddichtringO are lower, are convenient to extensive use in oil producing operation.
5, the protective valve that provides of the utility model embodiment, the upper end of lower contact and valve bonnet are spirally connected fixing, facilitate the dismounting between valve bonnet and lower contact or installation, are convenient to overhaul valve bonnet or lower contact, change.
Accompanying drawing explanation
The protective valve internal construction schematic diagram that Fig. 1 provides for the utility model embodiment;
The protective valve external structure schematic diagram that Fig. 2 provides for the utility model embodiment.
Detailed description of the invention
The utility model embodiment, by providing a kind of protective valve, solves in prior art and cannot seal flow string, causes the highly pressurised liquid in pit shaft to enter oil pipe through oil well pump, normally cannot carry out the problem of oil producing operation.The utility model embodiment achieves effective sealing to flow string by providing a kind of protective valve, ensure that normally carrying out of oil producing operation, avoids well head overflow, and protect ecological environment.
See Fig. 1 and Fig. 2, the protective valve that the utility model embodiment provides, when applying, upper end is connected with the oil well pump being connected with oil pipe, and lower end is connected with flow string, and its structure comprises: valve ball 1, valve seat 3, blanking plug 2, sealing ring, lower contact 4 and valve bonnet 5.Wherein, blanking plug 2 is arranged on the inside of lower contact 4, and blanking plug 2 is connected with lower contact 4 by position-limitting pin.Blanking plug 2 is after being subject to thrust, and position-limitting pin disconnects, and blanking plug 2 and lower contact 4 depart from and enter flow string.
See Fig. 2, the upper end of valve bonnet 5 offers at least one through hole 6, and through hole 6 is for conducting the hydraulic pressure in oil pipe.The inner side of valve bonnet 5 is provided with screw thread, and lower contact 4 upper end is provided with screw thread, and valve bonnet 5 is spirally connected fixing with the upper end of lower contact 4.
See Fig. 1 and Fig. 2, valve ball 1 is arranged on inside valve bonnet 5, and valve ball 1 is arranged on the upper end of blanking plug 2, and valve ball 1 departs from lower contact 4 for promoting blanking plug 2 under the effect of oil pipe hydraulic pressure, makes blanking plug 2 enter flow string.
See Fig. 1, valve seat 3 is arranged between lower contact 4 and valve ball 1, and the upper end of blanking plug 2 is through valve seat 3, and after blanking plug 2 departs from from the lower end of lower contact 4, valve ball 1 drops on valve seat 3, and valve seat 3 is scattered in oil well through lower contact 4 for preventing valve ball 1.
Sealing ring is arranged on blanking plug 2, and sealing ring is at least one.In the utility model embodiment, sealing ring adopts O RunddichtringO, and the quantity of sealing ring is two.
The operating principle of the protective valve that the utility model embodiment provides is as follows: in actual applications, is connected by oil pipe with the upper end of oil well pump, and the upper end of valve bonnet is fixedly connected with the lower end of oil well pump, is connected the lower end of lower contact with flow string.Apply certain hydraulic pressure (as 4MPa) in oil pipe after, valve ball moves downward, and valve ball promotes blanking plug and moves down, and blanking plug departs from from the lower end of lower contact and enters flow string, realizes the effective sealing to flow string.
The protective valve that the utility model embodiment provides at least has following beneficial effect:
The protective valve that the utility model embodiment provides; apply certain hydraulic pressure in oil pipe after; valve ball promotes blanking plug and moves down; blanking plug departs from from the lower end of lower contact and enters flow string; realize the effective sealing to flow string; ensure that normally carrying out of oil producing operation, avoid well head overflow, and protect ecological environment.
The protective valve that the utility model embodiment provides is provided with valve seat, and after blanking plug departs from from the lower end of lower contact, valve ball drops on valve seat, can prevent valve ball from passing lower contact and be scattered in oil well, be convenient to reclaim valve ball.
The protective valve that the utility model embodiment provides is provided with at least one sealing ring; tightness between sealing ring adds inside blanking plug and lower contact; ensure that blanking plug can normally depart from from the lower end of lower contact and enter flow string under the thrust of valve ball, realize the sealing to flow string.
Sealing ring in the protective valve that the utility model embodiment provides is O RunddichtringO, and good sealing effect, the cost of O RunddichtringO are lower, are convenient to extensive use in oil producing operation.
The protective valve that the utility model embodiment provides, the upper end of lower contact and valve bonnet are spirally connected fixing, facilitate the dismounting between valve bonnet and lower contact or installation, are convenient to overhaul valve bonnet or lower contact, change.
It should be noted last that, above detailed description of the invention is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a protective valve, described protective valve is connected with the oil well pump being connected with oil pipe upper end when applying, and lower end is connected with flow string; It is characterized in that, comprising: valve ball, blanking plug, lower contact and valve bonnet; Described blanking plug is arranged on the inside of described lower contact and is connected with described lower contact; After described blanking plug is subject to thrust, departs from described lower contact and enter described flow string;
The upper end of described valve bonnet offers at least one through hole, and described through hole is for conducting the hydraulic pressure in described oil pipe; Described valve bonnet is fixedly connected with the upper end of described lower contact;
Described valve ball is arranged on inside described valve bonnet, and described valve ball is arranged on the upper end of described blanking plug; Described valve ball is used under the effect of described oil pipe hydraulic pressure, promoting described blanking plug and described lower contact departs from.
2. protective valve according to claim 1, is characterized in that, also comprises: valve seat; Described valve seat is arranged between described lower contact and described valve ball; The upper end of described blanking plug is through described valve seat.
3. protective valve according to claim 1 and 2, is characterized in that, also comprises: sealing ring; Described sealing ring is arranged on described blanking plug; Described sealing ring is at least one.
4. protective valve according to claim 3, is characterized in that, described sealing ring is O RunddichtringO.
5. protective valve according to claim 1 and 2, is characterized in that, also comprises: position-limitting pin; Described blanking plug is connected with described lower contact by described position-limitting pin.
6. protective valve according to claim 1 and 2, is characterized in that, the upper end of described lower contact and the inner side of described valve bonnet are provided with screw thread; Upper end and the described valve bonnet of described lower contact are spirally connected fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348775.8U CN204703842U (en) | 2015-05-26 | 2015-05-26 | A kind of protective valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348775.8U CN204703842U (en) | 2015-05-26 | 2015-05-26 | A kind of protective valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204703842U true CN204703842U (en) | 2015-10-14 |
Family
ID=54283465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520348775.8U Active CN204703842U (en) | 2015-05-26 | 2015-05-26 | A kind of protective valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204703842U (en) |
-
2015
- 2015-05-26 CN CN201520348775.8U patent/CN204703842U/en active Active
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |