GB908891A - Improvements in or relating to fluid flow regulators - Google Patents

Improvements in or relating to fluid flow regulators

Info

Publication number
GB908891A
GB908891A GB3849357A GB3849357A GB908891A GB 908891 A GB908891 A GB 908891A GB 3849357 A GB3849357 A GB 3849357A GB 3849357 A GB3849357 A GB 3849357A GB 908891 A GB908891 A GB 908891A
Authority
GB
United Kingdom
Prior art keywords
venturi
pressure
duct
throat
fluid
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
Application number
GB3849357A
Inventor
Geoffrey Rex Allen
Derek John Batten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3849357A priority Critical patent/GB908891A/en
Publication of GB908891A publication Critical patent/GB908891A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
    • 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)
  • Fluid Mechanics (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

908,891. Fluid-actuated valves. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 10, 1959 [Dec. 11, 1957], No. 38493/57. Class 135. A fluid flow regulator comprises a diaphragmactuated valve member 13 loaded by a spring 15 and which responds to demand pressure at a remote point in a delivery line 18 and in accordance with the velocity of flow through a Venturi 19 adjacent the regulator in the delivery line 18. A duct 18a connects the throat of the Venturi to a chamber 17 beneath the diaphragm so that on inspiration by the user of, e.g., breathing-equipment, pressure beneath the diaphragm is lowered to permit the valve to open. Once open the pressure in the chamber 17 will be related to Venturi throat velocity and on a high flow rate being demanded the pressure of the fluid at the expansion end 19a of the Venturi will be maintained at a correspondingly high level. In a modification the Venturi 19 is replaced by a converging injector nozzle in the line 18 with the nozzle outlet shown adjacent the opening of the duct 18a. It is not necessary for the duct 18a to be precisely opposite the throat of the Venturi or the nozzle outlet, it may be at any point in a low-pressure region affected by the high velocity of fluid flow.
GB3849357A 1957-12-11 1957-12-11 Improvements in or relating to fluid flow regulators Expired GB908891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3849357A GB908891A (en) 1957-12-11 1957-12-11 Improvements in or relating to fluid flow regulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3849357A GB908891A (en) 1957-12-11 1957-12-11 Improvements in or relating to fluid flow regulators

Publications (1)

Publication Number Publication Date
GB908891A true GB908891A (en) 1962-10-24

Family

ID=10403825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3849357A Expired GB908891A (en) 1957-12-11 1957-12-11 Improvements in or relating to fluid flow regulators

Country Status (1)

Country Link
GB (1) GB908891A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064048A1 (en) * 1981-04-27 1982-11-03 Waagner-Biro Aktiengesellschaft Control valve, particularly mixing or metering valve
GB2225091A (en) * 1988-11-18 1990-05-23 Pro Aqua Systems Ltd Flow modulator system for pressure reducing valves
GB2300733A (en) * 1995-04-28 1996-11-13 Pro Aqua Systems Ltd Modulation of Fluid Flow
EP1580430A2 (en) * 2004-03-24 2005-09-28 Siemens Aktiengesellschaft Volume flow rate limiter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064048A1 (en) * 1981-04-27 1982-11-03 Waagner-Biro Aktiengesellschaft Control valve, particularly mixing or metering valve
GB2225091A (en) * 1988-11-18 1990-05-23 Pro Aqua Systems Ltd Flow modulator system for pressure reducing valves
GB2300733A (en) * 1995-04-28 1996-11-13 Pro Aqua Systems Ltd Modulation of Fluid Flow
EP1580430A2 (en) * 2004-03-24 2005-09-28 Siemens Aktiengesellschaft Volume flow rate limiter
EP1580430A3 (en) * 2004-03-24 2006-03-08 Siemens Aktiengesellschaft Volume flow rate limiter

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