WO1995005554A3 - An excess-flow safety shut-off device - Google Patents

An excess-flow safety shut-off device Download PDF

Info

Publication number
WO1995005554A3
WO1995005554A3 PCT/AU1994/000453 AU9400453W WO9505554A3 WO 1995005554 A3 WO1995005554 A3 WO 1995005554A3 AU 9400453 W AU9400453 W AU 9400453W WO 9505554 A3 WO9505554 A3 WO 9505554A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor chamber
chamber
sensor
sealing means
movable piston
Prior art date
Application number
PCT/AU1994/000453
Other languages
French (fr)
Other versions
WO1995005554A2 (en
Inventor
Trevor Thomas Esplin
Walter Morrison
Jean Morrison
Original Assignee
Trevor Thomas Esplin
Walter Morrison
Jean Morrison
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 AUPM6748A external-priority patent/AUPM674894A0/en
Application filed by Trevor Thomas Esplin, Walter Morrison, Jean Morrison filed Critical Trevor Thomas Esplin
Priority to EP94922202A priority Critical patent/EP0713568A4/en
Priority to AU73430/94A priority patent/AU7343094A/en
Publication of WO1995005554A2 publication Critical patent/WO1995005554A2/en
Publication of WO1995005554A3 publication Critical patent/WO1995005554A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/20—Excess-flow valves
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
    • F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
    • F16K17/285—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only the cutting-off member being a ball
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL

Abstract

A fluid flow safety device comprises a body having an inlet end for connection to a fluid supply and an inlet passageway (8, 48, 103) which leads to a selective fluid flow sensor chamber (9, 49, 115) having a sealing means (10, 50) which encircles the outlet orifice (11, 51) of smaller cross section than that of the sensor chamber, said outlet orifice leading from the sensor chamber into a pressure chamber (12, 52) within the body leading to an outlet. Between the inlet end of the sensor chamber and the sealing means is a tapered section (13, 117), wherein the bore of the sensor chamber decreases in diameter as it nears the sealing means. A sensor chamber shield (120) may encircle the sensor chamber by forming , defining and separating the internal length of the sensor chamber passageway from that of the inlet or any other passageway. A ball (16, 56, 119) in the sensor chamber moves between the inlet passageway end of the sensor chamber and the outlet orifice, to form a seal with the sealing means when flow through the sensor is above a predetermined value. Within the pressure chamber is a movable piston (20, 60, 131) in sealing contact with it to increase or decrease the volume of the pressure chamber. Movement of the movable piston form a rest position fully towards the sensor chamber will deny a seal to made between the ball and the sealing means. The movable piston may be a primary valve mechanism which forms a seal between the inlet and outlet passagways. The movable piston may include an indicator mark visible only when the pressure in the pressure chamber is avove a predetermined value. Embodiments for LP gas include separate use of sensor chamber or movable piston with or without primary valve.
PCT/AU1994/000453 1993-08-09 1994-08-08 An excess-flow safety shut-off device WO1995005554A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP94922202A EP0713568A4 (en) 1993-08-09 1994-08-08 An excess-flow safety shut-off device
AU73430/94A AU7343094A (en) 1993-08-09 1994-08-08 An excess-flow safety shut-off device

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPM043293 1993-08-09
AUPM0432 1993-08-09
AUPM6748 1994-07-12
AUPM6748A AUPM674894A0 (en) 1994-07-12 1994-07-12 An excess flow safety shut-off device

Publications (2)

Publication Number Publication Date
WO1995005554A2 WO1995005554A2 (en) 1995-02-23
WO1995005554A3 true WO1995005554A3 (en) 1995-03-23

Family

ID=25644516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1994/000453 WO1995005554A2 (en) 1993-08-09 1994-08-08 An excess-flow safety shut-off device

Country Status (3)

Country Link
EP (1) EP0713568A4 (en)
CA (1) CA2169192A1 (en)
WO (1) WO1995005554A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2754872B1 (en) * 1996-10-21 1998-12-24 Briffault Sa CONDUIT CONSISTING OF TWO LINKS THAT COULD MOVE IN RELATION TO THE OTHER AND RESETTING INTERNAL SECURITY
CN107606240A (en) * 2017-10-20 2018-01-19 新乡市华航航空液压设备有限公司 A kind of high-precision voltage stabilizing combination valve
US10746406B2 (en) * 2018-09-18 2020-08-18 Georg Fischer Central Plastics Llc Breaker box assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0172935A1 (en) * 1984-08-30 1986-03-05 Ruey Feng Fang Safety gas controller
AU4820685A (en) * 1984-02-02 1987-04-09 Sung, Show Yen Safety gas valve
GB2184207A (en) * 1985-12-12 1987-06-17 Tsai Tzung Ta Safety valve
AU6941187A (en) * 1986-01-24 1987-08-14 Premier-Fosters (Australia) Limited Automatic fluid flow shutoff device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4820685A (en) * 1984-02-02 1987-04-09 Sung, Show Yen Safety gas valve
EP0172935A1 (en) * 1984-08-30 1986-03-05 Ruey Feng Fang Safety gas controller
GB2184207A (en) * 1985-12-12 1987-06-17 Tsai Tzung Ta Safety valve
AU6941187A (en) * 1986-01-24 1987-08-14 Premier-Fosters (Australia) Limited Automatic fluid flow shutoff device

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT; Accession No. 92-346962/42, Class Q66; & SE,A,9100532 (LINDGREN), 26 August 1992 (26.08.92). *
PATENT ABSTRACTS OF JAPAN, M373, page 57; & JP,A,59 217 100 (NICHIDOKU KOGKYO K K), 7 December 1984 (07.12.84). *
See also references of EP0713568A4 *

Also Published As

Publication number Publication date
CA2169192A1 (en) 1995-02-23
EP0713568A4 (en) 1998-09-30
EP0713568A1 (en) 1996-05-29
WO1995005554A2 (en) 1995-02-23

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