NL7612450A - Silent gas expansion valve - has porous membrane supported between flexible diaphragm and perforated plate - Google Patents

Silent gas expansion valve - has porous membrane supported between flexible diaphragm and perforated plate

Info

Publication number
NL7612450A
NL7612450A NL7612450A NL7612450A NL7612450A NL 7612450 A NL7612450 A NL 7612450A NL 7612450 A NL7612450 A NL 7612450A NL 7612450 A NL7612450 A NL 7612450A NL 7612450 A NL7612450 A NL 7612450A
Authority
NL
Netherlands
Prior art keywords
porous membrane
perforated plate
expansion valve
flexible diaphragm
gas expansion
Prior art date
Application number
NL7612450A
Other languages
Dutch (nl)
Other versions
NL182253B (en
NL182253C (en
Original Assignee
Gaz De France
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
Priority claimed from FR7534336A external-priority patent/FR2330936A1/en
Priority claimed from FR7627562A external-priority patent/FR2364392A2/en
Application filed by Gaz De France filed Critical Gaz De France
Publication of NL7612450A publication Critical patent/NL7612450A/en
Publication of NL182253B publication Critical patent/NL182253B/en
Application granted granted Critical
Publication of NL182253C publication Critical patent/NL182253C/en

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
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/02—Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or imbalance
    • 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
    • G05D16/0638—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 characterised by the form of the obturator
    • G05D16/0641—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 characterised by the form of the obturator the obturator is a membrane

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Safety Valves (AREA)

Abstract

The silent gas expansion valve has a central inlet pipe with an outer coaxial outlet pipe. the annulus which communicates with the outlet is covered with a perforated plate. The perforated plate is, in turn, covered with a porous membrane. A flexible diaphragm is clamped between flanges and its upper surface is subjected to the control pressure in the space between them. The total area of the cross-section of the holes in the plate is equal to the effective area of flow through the porous membrane. When the gas pressure equals the control pressure the diaphragm is pushed off the porous membrane allowing the gas to flow from the inner tube to the annulus.
NL7612450A 1975-11-10 1976-11-09 NOISELESS EXPANSION VALVE FOR GAS FLUID DUMS. NL182253C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7534336A FR2330936A1 (en) 1975-11-10 1975-11-10 Silent gas expansion valve - has porous membrane supported between flexible diaphragm and perforated plate
FR7627562A FR2364392A2 (en) 1976-09-14 1976-09-14 Silent gas expansion valve - has porous membrane supported between flexible diaphragm and perforated plate

Publications (3)

Publication Number Publication Date
NL7612450A true NL7612450A (en) 1977-05-12
NL182253B NL182253B (en) 1987-09-01
NL182253C NL182253C (en) 1988-02-01

Family

ID=26219139

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7612450A NL182253C (en) 1975-11-10 1976-11-09 NOISELESS EXPANSION VALVE FOR GAS FLUID DUMS.

Country Status (2)

Country Link
ES (1) ES453151A1 (en)
NL (1) NL182253C (en)

Also Published As

Publication number Publication date
NL182253B (en) 1987-09-01
ES453151A1 (en) 1978-02-16
NL182253C (en) 1988-02-01

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V4 Lapsed because of reaching the maxim lifetime of a patent

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