CN102392617A - Multistage throttle valve - Google Patents
Multistage throttle valve Download PDFInfo
- Publication number
- CN102392617A CN102392617A CN2011103051143A CN201110305114A CN102392617A CN 102392617 A CN102392617 A CN 102392617A CN 2011103051143 A CN2011103051143 A CN 2011103051143A CN 201110305114 A CN201110305114 A CN 201110305114A CN 102392617 A CN102392617 A CN 102392617A
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- valve
- cage cover
- cage
- throttle
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Abstract
The invention relates to a liquid throttle valve, which is a throttle pressure-reducing device, in particular a throttle pressure-reducing device related to high pressure petroleum natural gas exploitation. The throttle valve mainly comprises a valve body, a cage seat, an inner cage, a valve bush, an outer cage, a lining, a packing box, a valve cap and a valve rod, wherein multiple throttle orifices are formed on the inner cage, the inner cage is fixed in an inner circle of the cage seat, the cage seat is fixed on the valve body, multiple throttle orifices are formed on the outer cage, one end of the outer cage is fixed on the cage seat, and the other end of the outer cage is fixed on the lining. The valve bush is driven by the valve rod to move to change the open area of the throttle valve, thereby adjusting the outlet pressure. The invention is prominent in the aspects of improving the throttle effect, simplifying a throttle pressure reduction process, lowering use and maintenance costs and the like.
Description
Technical field
The present invention relates to a kind of fluid choke valve, is a kind of throttling dropping equipment, particularly a kind of throttling dropping equipment about the high pressure oil and gas exploitation.
Background technology
For the natural gas transport in the high pressure high gas rate well is arrived the place that needs, need throttling arrangement that the natural gas in the high pressure high gas rate well is carried out the throttling step-down, adopting cage shell type choke valve to carry out the throttling step-down is a kind of very effective selection.Cage shell type choke valve is a telescoping valve, is a kind of valve that grows up in the sixties.The cage shell type choke valve that uses at present mainly contains two types, and the one, interior cage shell type (it is outer that valve pocket is positioned at the cage cover); The 2nd, outer cage shell type (plunger is positioned at the cage cover), no matter any, all be to utilize valve pocket to put slip (or plunger slides in the cage cover outside) to produce the purpose that different area of passages reaches control flow and pressure at interior cage.High-pressure fluid gets into the annular space between valve body and the cage cover from the choke valve inlet, changes fluid flow direction, and bump, extruding each other, gets into cage cover center through expanding behind the throttle orifice of cage cover, and the fluid after the step-down is discharged from the choke valve outlet again.
Existing choke valve is after high-pressure fluid passes through a choke valve, only to carry out a throttling step-down.When the pressure of fluid is big; Especially during the pressure before and after the throttling bigger; A throttling often is difficult to reach the purpose of the throttling step-down of expection, and at this moment the scene takes to utilize many choke valves to be cascaded usually, and carrying out repeatedly, the throttling step-down reaches requirement.So both increased the quantity of choke valve, and also made complex process, cost also increases simultaneously.For the restriction effect that in a choke valve, obtains hoping; The present invention proposes in a choke valve, to accomplish repeatedly throttling; A kind of novel cage shell type choke valve has promptly been proposed; A kind of repeatedly choke valve reaches the throttling step-down purpose of expection, and this choke valve shows particularly outstanding at aspects such as improving restriction effect, reduction working service cost.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of repeatedly choke valve is provided, adopt multilayer cage cover that high-pressure fluid is carried out the throttling step-down, in a choke valve, realize repeatedly throttling, improved the effect of throttling step-down, simplified the technology of throttling step-down.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is: a kind of repeatedly choke valve of the present invention mainly comprises valve body, cage cover seat, internal layer cage cover, valve pocket, outer cage cover, lining, packing box, valve gap, valve rod.Said internal layer cage puts and has a plurality of throttle orifices, is fixed in the interior circle of cage cover seat; Said cage cover seat is fixed on the valve body; Outer cage puts and has a plurality of throttle orifices, and an end is fixed on the cage cover seat, and the other end is fixed on the lining; Lining is fixed on the valve body; Said valve pocket is fixed on the valve rod; The valve pocket inner surface contacts with internal layer cage cover external surface; And seal the throttle orifice that the internal layer cage puts; The valve pocket external surface contacts with outer cage cover inner surface, and seals the throttle orifice that outer cage puts, and valve pocket can move back and forth between internal layer cage cover external surface and outer cage cover inner surface; Packing box is fixed on the valve body through valve gap; Valve pocket moves back and forth between valve gap, packing box with valve rod, and valve rod drives valve pocket and between internal layer cage cover and outer cage cover, moves back and forth, and the throttle orifice that control internal layer cage cover and outer cage put exposes the size of valve pocket area.
During work; High-pressure fluid is got in the annular space that valve body and outer cage cover constitute by the inlet of valve body; High-pressure fluid flows into outer cage cover from annular space through the throttle orifice that outer cage puts and overlaps in the annular space that forms with the internal layer cage; When flowing through the throttle orifice that outer cage puts, realizes high-pressure fluid the step-down of throttling for the first time; Then fluid is realized the step-down of throttling for the second time through the throttle orifice outflow that the internal layer cage puts, and afterwards, the low-pressure fluid after twice throttling step-down (fluid pressure when entering the mouth relatively) is flowed out by the choke valve outlet.The flow through orifice size of the throttle hole area sum formation choke valve that internal layer cage cover and outer cage put of fluid, the size of orifice size can be by valve pocket mobile change vertically.Through valve rod being applied the stroke that power can change valve pocket, thereby change the area of passage of choke valve, reach the purpose that adjusts mouth pressure.
Advantage of the present invention is: 1, for the multi-level throttle valve of series connection, originally repeatedly choke valve has little, the compact conformation of volume; 2, because in same choke valve, realized repeatedly throttling, originally repeatedly choke valve can reduce throttling step-down cost; 3, the simulation analysis result shows, under identical condition, with respect to existing single choke valve, originally repeatedly choke valve has remarkable advantages aspect antihypertensive effect; 4, through changing the arrangement of internal layer cage cover throttle orifice and outer cage cover throttle orifice, can obtain different restriction effects; 5. easily manufactured, reliable operation.
Description of drawings
Fig. 1 is the structural representation of a kind of repeatedly choke valve of the present invention.
Fig. 2 is a valve body structure sketch map of the present invention.
Fig. 3 is a cage holder with sleeve cover sketch map of the present invention.
Fig. 4 is an internal layer cage nested structure sketch map of the present invention.
Fig. 5 is valve pocket of the present invention and stem structure sketch map.
Fig. 6 is an outer cage nested structure sketch map of the present invention.
Fig. 7 is a bush structure sketch map of the present invention.
Among the figure, 1. valve body, 2. cage cover seat, 3. internal layer cage cover, 4. valve pocket, 5. outer cage cover, 6. lining, 7. packing box, 8. valve gap, 9. valve rod.
The specific embodiment
Further specify the present invention below in conjunction with accompanying drawing.
A kind of repeatedly choke valve of the present invention mainly comprises valve body 1, cage cover seat 2, internal layer cage cover 3, valve pocket 4, outer cage cover 5, lining 6, packing box 7, valve gap 8, valve rod 9; Have a plurality of throttle orifices on the said internal layer cage cover 3, be fixed in the cage cover seat 2 interior circles; Cage cover seat 2 is fixed on the valve body 1; Have a plurality of throttle orifices on the outer cage cover 5, an end is fixed on the cage cover seat 2, and the other end is fixed on the lining 6; Lining 6 is fixed on the valve body 1; Valve pocket 4 is fixed on the valve rod 9; Valve pocket 4 inner surfaces overlap 3 external surfaces with the internal layer cage and contact; And seal the internal layer cage and overlap the throttle orifice on 3; Valve pocket 4 external surfaces overlap 5 inner surfaces with outer cage and contact, and seal the throttle orifice on the outer cage cover 5, and valve pocket 4 can overlap 3 external surfaces and outer cage at the internal layer cage and overlap between 5 inner surfaces and move back and forth; Packing box 7 is fixed on the valve body 1 through valve gap 8; Valve pocket 4 moves back and forth at valve gap 8,7 of packing boxs with valve rod 9, and valve rod 9 drive valve pockets 4 move back and forth between internal layer cage cover 3 and outer cage cover 5, and the throttle orifice on control internal layer cage cover 3 and the outer cage cover 5 exposes the size of valve pocket 4 areas.
Operating principle; High-pressure fluid is got in the annular space that valve body 1 and outer cage cover 5 constitute by the inlet of valve body 1; High-pressure fluid flows into outer cage cover 5 from the throttle orifice of annular space on outer cage cover 5 and overlaps in the annular space of 3 formation with the internal layer cage; High-pressure fluid is flowed through and is realized the step-down of throttling for the first time when outer cage overlaps the throttle orifice on 5; Then the throttle orifice of fluid on internal layer cage cover 3 flows out and realizes the step-down of throttling for the second time, and afterwards, the low-pressure fluid after twice throttling step-down (fluid pressure when entering the mouth relatively) is flowed out by the choke valve outlet.Flow through internal layer cage cover 3 and the throttle hole area sum on the outer cage cover 5 of fluid constitutes the orifice size of choke valve, and the size of orifice size can be by valve pocket 4 mobile change vertically.Through valve rod 9 is applied the stroke that power can change valve pocket 4, thereby change the area of passage of choke valve, reach the purpose that adjusts mouth pressure.
Claims (1)
1. choke valve repeatedly; Mainly comprise valve body (1), cage cover seat (2), internal layer cage cover (3), valve pocket (4), outer cage cover (5), lining (6), packing box (7), valve gap (8), valve rod (9); It is characterized in that; Have a plurality of throttle orifices on the said internal layer cage cover (3), be fixed in the interior circle of cage cover seat (2); Cage cover seat (2) is fixed on the valve body (1); Have a plurality of throttle orifices on the outer cage cover (5), an end is fixed on the cage cover seat (2), and the other end is fixed on the lining (6); Lining (6) is fixed on the valve body (1); Valve pocket (4) is fixed on the valve rod (9); Valve pocket (4) inner surface contacts with internal layer cage cover (3) external surface; And seal the throttle orifice on the internal layer cage cover (3); Valve pocket (4) external surface contacts with outer cage cover (5) inner surface, and seals the throttle orifice on the outer cage cover (5), and valve pocket (4) can move back and forth between internal layer cage cover (3) external surface and outer cage cover (5) inner surface; Packing box (7) is fixed on the valve body (1) through valve gap (8); Valve pocket (4) moves back and forth between (7) at valve gap (8), packing box with valve rod (9); Valve rod (9) drives valve pocket (4) and between internal layer cage cover (3) and outer cage cover (5), moves back and forth, and the throttle orifice on control internal layer cage cover (3) and the outer cage cover (5) exposes the size of valve pocket (4) area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103051143A CN102392617A (en) | 2011-10-11 | 2011-10-11 | Multistage throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103051143A CN102392617A (en) | 2011-10-11 | 2011-10-11 | Multistage throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392617A true CN102392617A (en) | 2012-03-28 |
Family
ID=45859987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103051143A Pending CN102392617A (en) | 2011-10-11 | 2011-10-11 | Multistage throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102392617A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321607A (en) * | 2013-07-01 | 2013-09-25 | 西南石油大学 | Double-layer-cage double-plunger cage throttling valve |
| CN105065682A (en) * | 2015-09-07 | 2015-11-18 | 盐城工学院 | Cage sleeve type throttle valve |
| CN107859775A (en) * | 2017-12-13 | 2018-03-30 | 江苏威尔德钻采设备有限公司 | Cage type throttling valve |
| CN111058983A (en) * | 2018-10-17 | 2020-04-24 | 罗伯特·博世有限公司 | Fuel injector |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4041982A (en) * | 1976-01-09 | 1977-08-16 | Kieley & Mueller, Inc. | Double wall plug control valve |
| US5431188A (en) * | 1994-03-25 | 1995-07-11 | Master Flo Valve, Inc. | Flow trim for choke |
| US6047734A (en) * | 1997-12-11 | 2000-04-11 | Robinson; Brian Anthony | Valve assembly |
| CN101270819A (en) * | 2008-05-08 | 2008-09-24 | 四川华林自控科技有限公司 | High pressure-difference sleeve valve |
| CN201671596U (en) * | 2010-05-31 | 2010-12-15 | 刘子良 | Outer sleeve corbula-type throttle valve |
| CN201963257U (en) * | 2011-03-31 | 2011-09-07 | 西南石油大学 | Combined secondary throttling valve |
-
2011
- 2011-10-11 CN CN2011103051143A patent/CN102392617A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4041982A (en) * | 1976-01-09 | 1977-08-16 | Kieley & Mueller, Inc. | Double wall plug control valve |
| US5431188A (en) * | 1994-03-25 | 1995-07-11 | Master Flo Valve, Inc. | Flow trim for choke |
| US6047734A (en) * | 1997-12-11 | 2000-04-11 | Robinson; Brian Anthony | Valve assembly |
| CN101270819A (en) * | 2008-05-08 | 2008-09-24 | 四川华林自控科技有限公司 | High pressure-difference sleeve valve |
| CN201671596U (en) * | 2010-05-31 | 2010-12-15 | 刘子良 | Outer sleeve corbula-type throttle valve |
| CN201963257U (en) * | 2011-03-31 | 2011-09-07 | 西南石油大学 | Combined secondary throttling valve |
Non-Patent Citations (1)
| Title |
|---|
| 顾成果: "套筒调节阀套筒结构的设计与分析", 《阀门》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321607A (en) * | 2013-07-01 | 2013-09-25 | 西南石油大学 | Double-layer-cage double-plunger cage throttling valve |
| CN105065682A (en) * | 2015-09-07 | 2015-11-18 | 盐城工学院 | Cage sleeve type throttle valve |
| CN107859775A (en) * | 2017-12-13 | 2018-03-30 | 江苏威尔德钻采设备有限公司 | Cage type throttling valve |
| CN111058983A (en) * | 2018-10-17 | 2020-04-24 | 罗伯特·博世有限公司 | Fuel injector |
| CN111058983B (en) * | 2018-10-17 | 2024-04-16 | 罗伯特·博世有限公司 | Fuel injector |
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Application publication date: 20120328 |