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WO2008140320A3 - Constant flow valve - Google Patents

Constant flow valve Download PDF

Info

Publication number
WO2008140320A3
WO2008140320A3 PCT/NO2008/000160 NO2008000160W WO2008140320A3 WO 2008140320 A3 WO2008140320 A3 WO 2008140320A3 NO 2008000160 W NO2008000160 W NO 2008000160W WO 2008140320 A3 WO2008140320 A3 WO 2008140320A3
Authority
WO
WIPO (PCT)
Prior art keywords
piston
choke
flow valve
constant flow
constant
Prior art date
Application number
PCT/NO2008/000160
Other languages
French (fr)
Other versions
WO2008140320A2 (en
Inventor
Bernt Sigve AADNØY
Original Assignee
Universitetet I Stavanger
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 Universitetet I Stavanger filed Critical Universitetet I Stavanger
Publication of WO2008140320A2 publication Critical patent/WO2008140320A2/en
Publication of WO2008140320A3 publication Critical patent/WO2008140320A3/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0106—Control of flow without auxiliary power the sensing element being a flexible member, e.g. bellows, diaphragm, capsule
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0126—Control of flow without auxiliary power the sensing element being a piston or plunger associated with one or more springs

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Safety Valves (AREA)

Abstract

Abstract A constant-flow valve (1) including a housing (2), a sealing piston (4) movable in the housing (2), a first choke (6) and a second choke (8), in which the relative axial position of the piston (4) determines the aperture of the second choke (8), and in which the upstream side of the first choke (6) communicates with one side of the piston (4), at which a fluid pressure acting on the piston (4) will seek to move the piston (4) in the closing direction of the second choke (8), the downstream side of the first choke (6) communicating with the opposite side of the piston (4), and in which at least a portion of the piston (4) is in a space (88) separated from a fluid flowing through the constant-flow valve (1).
PCT/NO2008/000160 2007-05-16 2008-05-08 Constant flow valve WO2008140320A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20072509 2007-05-16
NO20072509A NO326788B1 (en) 2007-05-16 2007-05-16 Constant flow valve (Sealed)

Publications (2)

Publication Number Publication Date
WO2008140320A2 WO2008140320A2 (en) 2008-11-20
WO2008140320A3 true WO2008140320A3 (en) 2009-10-29

Family

ID=39855307

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2008/000160 WO2008140320A2 (en) 2007-05-16 2008-05-08 Constant flow valve

Country Status (2)

Country Link
NO (1) NO326788B1 (en)
WO (1) WO2008140320A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB628261A (en) * 1946-08-01 1949-08-25 Bryans Aeroquipment Ltd Improvements in fluid flow controlling valves
DE2230362A1 (en) * 1971-07-06 1973-01-18 Spraying Systems Co OVERPRESSURE VALVE, ESPECIALLY FOR SPRAY GUNS
US5494070A (en) * 1994-05-06 1996-02-27 A & H Enterprises, Inc. Metering valve with adjustable floating piston and pin assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015626A (en) * 1976-01-22 1977-04-05 Thordarson, Inc. Constant flow valve for low flow rates
US6026849A (en) * 1998-06-01 2000-02-22 Thordarson; Petur High pressure regulated flow controller
NO319627B1 (en) * 2003-11-17 2005-09-05 Aadnoey Bernt Sigve Constant flow valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB628261A (en) * 1946-08-01 1949-08-25 Bryans Aeroquipment Ltd Improvements in fluid flow controlling valves
DE2230362A1 (en) * 1971-07-06 1973-01-18 Spraying Systems Co OVERPRESSURE VALVE, ESPECIALLY FOR SPRAY GUNS
US5494070A (en) * 1994-05-06 1996-02-27 A & H Enterprises, Inc. Metering valve with adjustable floating piston and pin assembly

Also Published As

Publication number Publication date
WO2008140320A2 (en) 2008-11-20
NO326788B1 (en) 2009-02-16
NO20072509L (en) 2008-11-17

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