WO2001098694A1 - Soupape de retenue assurant une limitation du debit multiniveau dont la configuration est en gradins - Google Patents
Soupape de retenue assurant une limitation du debit multiniveau dont la configuration est en gradins Download PDFInfo
- Publication number
- WO2001098694A1 WO2001098694A1 PCT/CN2001/000881 CN0100881W WO0198694A1 WO 2001098694 A1 WO2001098694 A1 WO 2001098694A1 CN 0100881 W CN0100881 W CN 0100881W WO 0198694 A1 WO0198694 A1 WO 0198694A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stage
- valve
- throttling
- valve seat
- pressure reducing
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
Definitions
- the present invention relates to a multi-stage throttle pressure reducing valve, and more particularly to a shape of a multi-stage throttle pressure reducing valve spool valve seat.
- the existing multi-stage throttle valve is composed of a multi-stage throttle assembly of any size and shape and a sealing surface for regulating flow and shutting off.
- the disadvantage brought by this is that the uneven partial pressure is particularly prominent in the case of small openings, which causes cavitation damage to the sealing surface, resulting in damage to expensive valves.
- the structure of the existing multi-stage throttle is complicated and the manufacturing cost is high.
- An object of the present invention is to provide a multi-stage throttle pressure reducing valve, which achieves a mode of uniform partial pressure reduction through the shape matching of the valve seat and the valve core. And the design according to the present invention can simultaneously improve the cavitation damage problem in the prior art when the sealing surface of the multi-stage throttle pressure reducing valve is small.
- the multi-stage throttle pressure reducing valve of the present invention is simpler in mechanical processing, so that the processing cost can be significantly saved.
- a stepped multi-stage throttle pressure reducing valve which includes a generally tapered tube-shaped valve seat and a stepped valve core that cooperates with the valve seat.
- the closed loop-shaped throttling surfaces formed by the gap between each step of the stepped valve core and the cone-shaped valve seat are respectively opposed to a throttling pressure reducing stage.
- the valve seat may have different slopes or curvatures according to the requirements of different situations.
- the same generally tapered valve seat can also have different slopes or curvatures at different stages to meet different requirements.
- the spool is shown as a number of circles of varying diameters in the horizontal view, but in a stepped shape in the vertical section. This shape makes the machining of the spool and valve seat easier and facilitates the machining with higher accuracy.
- the closed-loop throttle surface can be any shape in the horizontal cross-sectional view, such as oval, square, rectangle, diamond, triangle, or Other shapes to suit a wider range of machining conditions and other conditions.
- the ratio of the area of each throttle surface corresponds to the partial pressure proportional relationship.
- the differential pressure is allocated to each throttle decompression stage according to the partial pressure ratio determined by each throttle area, thereby achieving the function of multi-stage partial pressure decompression.
- the gap value between each pressure reducing stage and the cone-shaped valve seat can be selected and determined.
- the partial pressure proportional relationship can be further selected and determined, Can make the valve in the effective throttle decompression stroke, especially in the small stroke (full stroke
- a stepped valve core using the reaction force of the fluid when it rushes to the frontal obstacle, increases the resistance of the fluid flow, strengthens the decompression effect, and can further reduce the effect of the fluid on the valve seat and the valve core. Erosion.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001270453A AU2001270453A1 (en) | 2000-06-12 | 2001-05-30 | A steep-like throttling and reducing valve |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN00235893.X | 2000-06-12 | ||
CN00266820.3 | 2000-12-20 | ||
CN00266820 | 2000-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001098694A1 true WO2001098694A1 (fr) | 2001-12-27 |
Family
ID=4649305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2001/000881 WO2001098694A1 (fr) | 2000-06-12 | 2001-05-30 | Soupape de retenue assurant une limitation du debit multiniveau dont la configuration est en gradins |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2001098694A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1380397A2 (fr) * | 2002-07-04 | 2004-01-14 | Hankook Tire Co., Ltd. | Dispositif d'évacuation d'air pour un moule de vulcanisation de pneumatiques |
WO2009066980A2 (fr) * | 2007-11-20 | 2009-05-28 | Mimos Berhad | Micro clapet anti-retour amélioré |
US10317917B2 (en) | 2015-07-06 | 2019-06-11 | Emerson Process Management Regulator Technologies, Inc. | Fluid control apparatus having variable area flow restrictor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4321941A (en) * | 1979-12-12 | 1982-03-30 | Mannesmann Rexroth Gmbh | Pilot operated pressure relief valve |
US4368872A (en) * | 1979-12-07 | 1983-01-18 | G. L. Rexroth Gmbh | Pressure fluid regulating valve, particularly pressure reducing valve |
EP0481573A1 (fr) * | 1990-10-17 | 1992-04-22 | Horst Jäkel | Dispositif pour réduction de pression d'un média à gaz |
CN1103473A (zh) * | 1993-12-04 | 1995-06-07 | 巴达茵公司 | 高压降装置用的减压阀 |
-
2001
- 2001-05-30 WO PCT/CN2001/000881 patent/WO2001098694A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4368872A (en) * | 1979-12-07 | 1983-01-18 | G. L. Rexroth Gmbh | Pressure fluid regulating valve, particularly pressure reducing valve |
US4321941A (en) * | 1979-12-12 | 1982-03-30 | Mannesmann Rexroth Gmbh | Pilot operated pressure relief valve |
EP0481573A1 (fr) * | 1990-10-17 | 1992-04-22 | Horst Jäkel | Dispositif pour réduction de pression d'un média à gaz |
CN1103473A (zh) * | 1993-12-04 | 1995-06-07 | 巴达茵公司 | 高压降装置用的减压阀 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1380397A2 (fr) * | 2002-07-04 | 2004-01-14 | Hankook Tire Co., Ltd. | Dispositif d'évacuation d'air pour un moule de vulcanisation de pneumatiques |
EP1380397A3 (fr) * | 2002-07-04 | 2005-05-18 | Hankook Tire Co., Ltd. | Dispositif d'évacuation d'air pour un moule de vulcanisation de pneumatiques |
WO2009066980A2 (fr) * | 2007-11-20 | 2009-05-28 | Mimos Berhad | Micro clapet anti-retour amélioré |
WO2009066980A3 (fr) * | 2007-11-20 | 2009-10-22 | Mimos Berhad | Micro clapet anti-retour amélioré |
US10317917B2 (en) | 2015-07-06 | 2019-06-11 | Emerson Process Management Regulator Technologies, Inc. | Fluid control apparatus having variable area flow restrictor |
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