CN104989321A - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN104989321A CN104989321A CN201510426279.4A CN201510426279A CN104989321A CN 104989321 A CN104989321 A CN 104989321A CN 201510426279 A CN201510426279 A CN 201510426279A CN 104989321 A CN104989321 A CN 104989321A
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- China
- Prior art keywords
- valve
- ball
- seat
- filter screen
- valve body
- 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.)
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- Taps Or Cocks (AREA)
- Check Valves (AREA)
Abstract
The invention provides a check valve. The check valve is used for solving the problem that by means of an existing check valve, injected gas impurities damage the sealing effect of a valve ball and a valve seat easily. The check valve comprises a valve body. The valve body is internally provided with a first filtering mesh, a valve seat, a valve ball, springs, a spring pressing ring and a second filtering mesh. An elastic medium is connected to the position surrounding the contact face of the valve seat and the valve ball, and the side wall of the elastic medium is in a filtering mesh shape. By means of the check valve, the impurities injected into gas can be filtered so as to protect the sealing effect of the valve ball and the valve seat in the check valve.
Description
Technical field
The present invention relates to extracting device of oil field, particularly relate to a kind of ball-and-seat.
Background technology
Thickened oil recovery is the important ring in oilfield exploitation work, and so-called viscous crude is exactly high, the heavy crude oil of viscosity.Viscous crude flow resistance is large, flows into producing well and give rise to ground from oil well all very difficult from oil reservoir.At present steam soak method is generally adopted for the viscous crude be in oil reservoir.Described steam soak method connects well mouth of oil well by gas injection pipeline to inject a certain amount of high-temperature gas to reduce thick oil viscosity to heavy oil tested layer.Often need ball-and-seat to cause gas backstreaming to prevent the situations such as pressure in oil well increases suddenly between gas injection pipeline and well head, and then surface line, equipment are damaged.
Described ball-and-seat is connected to well mouth of oil well, enters into oil well only, and can not be back in gas injection pipeline by oil well for limiting gas by gas injection pipeline.Under the effect of ball-and-seat, even if oily borehole pressure increases suddenly also can not injure surface line and equipment.
The ball-and-seat taked in prior art, often because containing impurity in injecting gas, thus make ball surface can stop too much impurity, described impurity can cause valve ball and valve seat to seal, and then ball-and-seat the one direction injection effect of injecting gas is affected, time serious, ball-and-seat is scrapped.
Summary of the invention
The object of this invention is to provide a kind of ball-and-seat, better to protect the sealing effectiveness of valve ball and valve seat in ball-and-seat.
For this reason, the present invention proposes a kind of ball-and-seat, comprising: valve body, and described valve inner is provided with the first filter screen, valve seat, valve ball, spring, spring pressure ring and the second filter screen; Described spring one end contact valve ball is seated at valve seat side; The described spring other end is against spring pressure ring side, and described spring pressure ring is fixedly connected with valve body; Valve body is pipeline link near one end of valve seat, is well head link near one end of spring pressure ring; Described first filter screen is located between valve seat and pipeline link and the axis of place plane and valve body is orthogonal, the diameter of described first filter screen is identical with the internal diameter of valve body, described second filter screen is located between spring pressure ring and well head link and the axis of place plane and valve body is orthogonal, the diameter of described second filter screen is identical with the internal diameter of valve body, around the contact surface of described valve seat and valve ball, be connected with elastic fluid, the sidewall of described elastic fluid becomes filter screen shape.
Beneficial effect of the present invention:
The present embodiment is by increasing filter screen and be connected with into the elastic fluid of filter screen shape around valve seat with the contact surface of valve ball at valve inner, thus the impurity that can be fallen by strainer filtering before injecting gas touches valve ball in injecting gas, which reduces the impurity that ball surface touches, and then valve ball is just not easy to be destroyed for the sealing effectiveness of valve seat.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical 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 some embodiments of the present invention, for those skilled 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 structure of a kind of ball-and-seat of the present invention partly cuts open figure.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.
The structure that Fig. 1 shows a kind of ball-and-seat of the present invention partly cuts open figure.As shown in Figure 1, described ball-and-seat comprises: valve body 5, and described valve body 5 inside is provided with the first filter screen 2, valve seat 3, valve ball 4, spring 6, spring pressure ring 7 and the second filter screen 9; Described valve seat 3 is provided with axially extending bore (not shown) and is fixedly connected with valve body 5, and described spring 6 one end contact valve ball 4 is seated at valve seat 3 side and makes the axially extending bore on valve ball 4 seal valve seat 3; Described spring 6 other end is against spring pressure ring 7 side, and described spring pressure ring 7 is fixedly connected with valve body 5; Valve body 5 is pipeline link 1 near one end of valve seat 3, is well head link 8 near one end of spring pressure ring 7; Described first filter screen 2 is located between valve seat 3 and pipeline link 1 and the axis of place plane and valve body 5 is orthogonal, the diameter of described first filter screen 2 is identical with the internal diameter of valve body 5, described second filter screen 9 is located between spring pressure ring 7 and well head link 8 and the axis of place plane and valve body 5 is orthogonal, the diameter of described second filter screen 9 is identical with the internal diameter of valve body 5, around the contact surface of described valve seat 3 and valve ball 4, be connected with elastic fluid 10, the sidewall of described elastic fluid 10 becomes filter screen shape.
During work, the pipeline link 1 of the present embodiment is connected gas injection pipeline and well head link 8 connects well mouth of oil well.After connection, start gas injection.Injecting gas is first by the first filter screen 2, and injecting gas arrives elastic fluid 10 after the first filter screen 2 filters, thus can filter further.Through the gas arrival valve seat 3 of twice filtration and the contact position of valve ball 4.Continue injecting gas, when the gas pressure injected is greater than the thrust of spring 5 contact valve ball 4, valve ball 4 is injected into gas 4 and promotes, and then injecting gas is arrived in oil well by valve body 5.
In view of ball-and-seat and well head side are owing to communicating with oil well, and the gaseous impurity in oil well easily enters in ball-and-seat and also can affect valve ball 4 and valve seat 3 sealing effectiveness, so the present embodiment is also provided with the second filter screen 9, further ensures valve ball 4 and be not destroyed with the sealing effectiveness of valve seat 3.
In the application one preferred embodiment, the inwall of described pipeline link 1 is provided with temperature tube 11, so that measure the temperature of well head injecting gas.
The present embodiment is by increasing by the first filter screen 2 at valve inner, filtered out the impurity in injecting gas by the first filter screen 2 before injecting gas touches valve ball, which reduces the impurity that valve ball 4 surface contact arrives, and then valve ball is just not easy to be destroyed for the sealing effectiveness of valve seat.Simultaneously, in view of ball-and-seat and well head side are owing to communicating with oil well, and the gaseous impurity in oil well easily enters in ball-and-seat and also can affect valve ball 4 and valve seat 3 sealing effectiveness, so the present embodiment is also provided with the second filter screen 9, further ensures valve ball 4 and be not destroyed with the sealing effectiveness of valve seat 3.In addition, around valve seat with the contact surface of valve ball, be connected with into the elastic fluid of filter screen shape, thus filtered the impurity in gas further.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the scope of protection of present invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a ball-and-seat, is characterized in that, comprising: valve body, and described valve inner is provided with the first filter screen, valve seat, valve ball, spring, spring pressure ring and the second filter screen; Described spring one end contact valve ball is seated at valve seat side; The described spring other end is against spring pressure ring side, and described spring pressure ring is fixedly connected with valve body; Valve body is pipeline link near one end of valve seat, is well head link near one end of spring pressure ring; Described first filter screen is located between valve seat and pipeline link and the axis of place plane and valve body is orthogonal, the diameter of described first filter screen is identical with the internal diameter of valve body, described second filter screen is located between spring pressure ring and well head link and the axis of place plane and valve body is orthogonal, the diameter of described second filter screen is identical with the internal diameter of valve body, around the contact surface of described valve seat and valve ball, be connected with elastic fluid, the sidewall of described elastic fluid becomes filter screen shape.
2. a kind of ball-and-seat as claimed in claim 1, is characterized in that, described valve seat is provided with axially extending bore and is fixedly connected with valve body, and correspondingly, described spring one end contact valve ball is seated at valve seat side and makes the axially extending bore on valve ball seal valve seat.
3. a kind of ball-and-seat as claimed in claim 1, is characterized in that, the inwall of described pipeline link is provided with temperature tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426279.4A CN104989321A (en) | 2015-07-20 | 2015-07-20 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510426279.4A CN104989321A (en) | 2015-07-20 | 2015-07-20 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104989321A true CN104989321A (en) | 2015-10-21 |
Family
ID=54301190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510426279.4A Pending CN104989321A (en) | 2015-07-20 | 2015-07-20 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104989321A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112223365A (en) * | 2020-09-27 | 2021-01-15 | 重庆三创印刷有限公司 | Cutting device of printing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011043953A2 (en) * | 2009-10-07 | 2011-04-14 | Baker Hughes Incorporated | Multi-stage pressure equalization valve assembly of subterranean valves |
| CN202209467U (en) * | 2011-08-29 | 2012-05-02 | 浙江双杰铜业有限公司 | Ball valve |
| CN203051793U (en) * | 2013-01-25 | 2013-07-10 | 温州市大全汽车电器有限公司 | Electromagnetic valve |
| CN203627874U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Filter type floating ball valve |
| CN203729946U (en) * | 2013-12-30 | 2014-07-23 | 中国石油天然气股份有限公司 | Check valve |
| CN204877378U (en) * | 2015-07-20 | 2015-12-16 | 胡显三 | Single current valve |
-
2015
- 2015-07-20 CN CN201510426279.4A patent/CN104989321A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011043953A2 (en) * | 2009-10-07 | 2011-04-14 | Baker Hughes Incorporated | Multi-stage pressure equalization valve assembly of subterranean valves |
| CN202209467U (en) * | 2011-08-29 | 2012-05-02 | 浙江双杰铜业有限公司 | Ball valve |
| CN203051793U (en) * | 2013-01-25 | 2013-07-10 | 温州市大全汽车电器有限公司 | Electromagnetic valve |
| CN203627874U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Filter type floating ball valve |
| CN203729946U (en) * | 2013-12-30 | 2014-07-23 | 中国石油天然气股份有限公司 | Check valve |
| CN204877378U (en) * | 2015-07-20 | 2015-12-16 | 胡显三 | Single current valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112223365A (en) * | 2020-09-27 | 2021-01-15 | 重庆三创印刷有限公司 | Cutting device of printing machine |
| CN112223365B (en) * | 2020-09-27 | 2022-03-29 | 重庆三创印刷有限公司 | Cutting device of printing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151021 |