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 PDF

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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
Application number
PCT/CN2001/000881
Other languages
English (en)
Chinese (zh)
Inventor
Jianran Ma
Original Assignee
Jianran Ma
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jianran Ma filed Critical Jianran Ma
Priority to AU2001270453A priority Critical patent/AU2001270453A1/en
Publication of WO2001098694A1 publication Critical patent/WO2001098694A1/fr

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

L'invention concerne une soupape de retenue assurant une limitation du débit comprenant un siège de soupape en forme conique et un obus de soupape sous forme de gradins. Chaque gradin correspond à un niveau de retenue limiteur de débit et chaque niveau de retenue limiteur de débit forme une surface d'étranglement du fait de la conicité du siège de soupape et des intervalles existant entre les gradins de l'obus de soupape. En raison du calibre ajusté et exact du siège de soupape et de l'obus de soupape ou de la proportionnalité de l'aire qu'occupe la surface de limitation de débit dont la configuration est spécialement conçue à ces fins, il est possible d'obtenir un rapport de pression relativement correct et notamment de proposer la fonction permettant de protéger la face de scellement de la soupape même lors d'une ouverture insignifiante.
PCT/CN2001/000881 2000-06-12 2001-05-30 Soupape de retenue assurant une limitation du debit multiniveau dont la configuration est en gradins WO2001098694A1 (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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