CN2317361Y - Throttling stop valve - Google Patents
Throttling stop valve Download PDFInfo
- Publication number
- CN2317361Y CN2317361Y CN 97223174 CN97223174U CN2317361Y CN 2317361 Y CN2317361 Y CN 2317361Y CN 97223174 CN97223174 CN 97223174 CN 97223174 U CN97223174 U CN 97223174U CN 2317361 Y CN2317361 Y CN 2317361Y
- Authority
- CN
- China
- Prior art keywords
- valve
- throttle
- valve core
- spool
- valve seat
- 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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- Lift Valve (AREA)
- Sliding Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The utility model discloses a throttle stop valve used for the work of picking and transporting petroleum and natural gas, which is a throttle voltage reduction component composed of a valve seat (2) and a valve core (4). The utility model is characterized in that the side wall of the valve seat (2) is provided with a throttle hole (3) and the size of a throttle area is determined by the position of the valve core on the valve seat. When the valve core is positioned on the lowest end, the throttle hole is completely blocked by the valve core and the throttle stop valve is in a stop and closed state. When the valve core is moved upwards to a fixed position, the throttle hole is exposed and the petroleum and the natural gas can flow by the throttle hole. The shape of the throttle hole is that a lower part is small and an upper part is big. The more upwards the valve core is moved, the more the throttling area is increased until the throttle hole is completely exposed. The upper part of the valve core is provided with an eccentric hole (5). When the petroleum and the natural gas flow out from the valve core, the valve corresponding to the valve seat is rotated to make the valve core get uniform abrasion. A sealed ring (6) is made of soft wearable material.
Description
The present invention relates to a kind of throttling stop valve, be used for oil, rock gas is adopted transporting operation.
Adopt in defeated the production at oil, rock gas, well head high pressure oil, air-flow need be depressurized to design pressure by the throttle valve throttling.Throttle valve commonly used is an Angle Throttle Valves, as KL44Y-32.0, L44H-32.0.The throttling flow section of this class throttle valve is the annular that forms between taper valve core and the valve seat circular hole, general aperture has only several, and sealing surface is a metal hard-sealing, therefore, easily by well head high pressure oil, air-flow and the mechanical admixture carried secretly thereof perverse bad, stop up, cause throttle valve to regulate, maybe can not play the stopping effect.
The purpose of this invention is to provide a kind of being easy to and regulate, close reliably the throttling stop valve of long service life.
Task of the present invention is achieved in that by valve seat and spool forms throttling step-down parts, is shaped on a throttle orifice on the sidewall of valve seat, is a hollow spool in the valve seat, and the size of orifice size is determined by the position of spool in valve seat.
Spool is when lowest positions, and throttle orifice is blocked by spool fully, and throttle valve is in the stopping state.In opening the process of throttle valve, spool moves up, and when arriving certain position, throttle orifice exposes, and oil, air-flow enter throttle orifice, flows in the spool from the spool lower end, and two eccentric openings from the spool upper end flow out then.Oil, gas by valve seat and spool after by throttling, produced pressure drop.Little going up greatly under being shaped as of throttle orifice, spool is got over up, and orifice size increases many more, all exposes until throttle orifice.
Two holes on spool top are the eccentric openings that axis does not overlap, oil, when air-flow flows out in spool, spool rotates with respect to valve seat, makes spool be subjected to uniform wear.Seal ring between spool lower end and the valve seat is made with soft high-abrasive material.
Advantage of the present invention is to adopt the combined hole throttling, and orifice size is concentrated relatively, is easy to regulate; The spool uniform wear; The seal ring reliable performance that soft high-abrasive material is made, long service life.
Description of drawings:
Fig. 1 is the structural representation of throttling stop valve of the present invention, wherein: 1. body; 2. valve seat; 3. throttle orifice; 4. spool; 5. eccentric opening; 6. seal ring; 7,8. adpting flange; 9. medium inlet; 10. media outlet.
Fig. 2 is the left view that valve seat and spool amplify among Fig. 1.
Below in conjunction with accompanying drawing one embodiment of the present of invention are described in detail.
Among Fig. 1, in body [1], valve seat [2] is arranged, be shaped on a throttle orifice [3] on its sidewall.One hollow spool [4] is arranged in the valve seat.The size of orifice size is determined by the position of spool in valve seat.Valve seat and spool constitute throttling step-down parts.
Throttling stop valve of the present invention inserts by adpting flange [7] and [8] and adopts defeated pipeline.Spool is when lowest positions, and throttle orifice is blocked by spool fully, and throttling stop valve is in the stopping state.When opening throttle valve, spool [4] moves up, and arrives certain position, throttle orifice [3] begins to expose, and [9] enter oil, the air-flow of throttle valve from the medium inlet, pass through throttle orifice, enter in the spool from the spool lower end, two eccentric openings from spool top flow out spool again.Oil after the throttling step-down, air-flow flow out throttling stop valve from media outlet [10].
Little going up greatly under being shaped as of throttle orifice, spool is got over up, and orifice size increases many more, all exposes until throttle orifice.
Two holes on spool top are the eccentric openings that axis does not overlap, oil, when air-flow flows out in the hole, spool rotates with respect to valve seat, makes spool be subjected to uniform wear.
Materials such as the available teflon of seal ring [6], sulfuration polyhenylene rubber, polyether-ketone rubber are made, and its good seal performance is wear-resisting, long service life.
Claims (3)
1. form the throttling stop valve of throttling step-down parts by valve seat and spool for one kind, it is characterized in that be shaped on a throttle orifice [3] on the sidewall of valve seat [2], two eccentric openings [5] are arranged at the top of spool [4].
2. throttling stop valve according to claim 1 is characterized in that, little going up greatly under being shaped as of throttle orifice [3].
3. throttling stop valve according to claim 1 and 2 is characterized in that, seal ring [6] is made by soft high-abrasive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97223174 CN2317361Y (en) | 1997-05-28 | 1997-05-28 | Throttling stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97223174 CN2317361Y (en) | 1997-05-28 | 1997-05-28 | Throttling stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2317361Y true CN2317361Y (en) | 1999-05-05 |
Family
ID=33937994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97223174 Expired - Fee Related CN2317361Y (en) | 1997-05-28 | 1997-05-28 | Throttling stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2317361Y (en) |
-
1997
- 1997-05-28 CN CN 97223174 patent/CN2317361Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |