GB1594982A - Gas supply systems - Google Patents

Gas supply systems Download PDF

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Publication number
GB1594982A
GB1594982A GB1375877A GB1375877A GB1594982A GB 1594982 A GB1594982 A GB 1594982A GB 1375877 A GB1375877 A GB 1375877A GB 1375877 A GB1375877 A GB 1375877A GB 1594982 A GB1594982 A GB 1594982A
Authority
GB
United Kingdom
Prior art keywords
stem
sleeve
low melting
plate
valve
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
GB1375877A
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.)
BROOKES G
Original Assignee
BROOKES G
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 BROOKES G filed Critical BROOKES G
Priority to GB1375877A priority Critical patent/GB1594982A/en
Publication of GB1594982A publication Critical patent/GB1594982A/en
Expired legal-status Critical Current

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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
    • F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
    • F16L37/40—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings with a lift valve being opened automatically when the coupling is applied
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/10—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part
    • F16L37/113—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using a rotary external sleeve or ring on one part the male part having lugs on its periphery penetrating into the corresponding slots provided in the female part
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/24—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action
    • F16L37/244—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe
    • F16L37/252—Couplings of the quick-acting type in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet action the coupling being co-axial with the pipe the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Description

(54) IMPROVEMENTS IN OR RELATING TO GAS SUPPLY SYSTEMS (71) I, GEORGE BROOKES, a British Subject, of 1 Summershades Lane, Grasscroft, Nr. Oldham, Lancashire, England, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a connector for use in a gas supply system.
It is known in, for example, domestic premises for a gas appliance to be detachably coupled to a gas supply point by a flexible hose thus permitting the gas appliance to be removed from its usual location, for, say, cleaning or maintenance purposes. The hose at its inlet end, has a sleeve which is coupled to a pipe connector via a bayonet joint. The pipe connector, which is part of the domestic premises gas supply system, has a valve normally spring urged to a closed position.
The hose sleeve has at its end a stem which, when the sleeve is joined to the pipe connector, abuts the valve to open same against its spring bias to permit a gas flow to the appliance. It will be manifest that disconnection of the sleeve from the pipe connector will allow the valve to be spring biased to close thus allowing the gas appliance to be safely removed. The stem is supported by an apertured plate at the sleeve end to allow gas to flow around the stem and into the hose when the valve is open.
The sleeve/pipe connector as described in the immediately preceding paragraph is hereinafter and in the claims referred to as "a gas supply connector of the type aforesaid".
A disadvantage of the gas supply connector of the type aforesaid is that in the case of a fire in the gas appliance the valve remains open due to the nature of the gas supply connector so that gas is continually supplied unless turned off at the mains with consequent major fire and/or explosion risks.
It is an object of the present invention to obviate or mitigate the aforesaid disadvantage and to provide a fail safe gas supply connector in case of fire.
According to the present invention there is provided a gas supply connector of the type aforesaid in which the stem is formed of a low melting material or is retained in position on the sleeve by a low melting material whereby, upon attainment of a predetermined temperature in the event of fire, either the stem melts or it is released so as to be movable by the valve closing under spring pressure.
Both the stem and its apertured support plate are preferably formed of a thermoplastics or a low melting point alloy. Alternatively, the stemmed and apertured plate is held in place in the sleeve by a low melting point solder.
It may simply be the stem which is formed of a thermoplastics material, it being conveniently connected to the apertured plate by the aforesaid low melting point solder.
An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawing, in which: Fig. 1 is a perspective view of a gas supply connector of the type aforesaid; and Fig. 2 is a fragmentary longitudinal sectional view showing one embodiment of the invention applied to the connector.
The gays supply connector is in two parts 10 and 11 detachably connected together by a bayonet connection indicated at 12, 13.
The connector part 11 is a fixed part of the gas supply distribution system in a domestic premises and has a hollow tubular body 14 traversed by a right-angled gas flow passage 15. Normal to and integral with the body 14 is a hollow externally screw-threaded branch pipe 16 whereby the connector is connected to a gas distribution pipe (not shown).
The body 14 is formed internally with a valve seat 17 with which can engage a valve 18. A spring 19 normally urges the valve 18 against its seat 17 to close passage 15, the spring 19 being disposed between the valve 18 and an end closure plug 20 screw engaging the body 14.
The connector part 10 comprises a sleeve 21 normally connected by a flexible hose to, say, a gas cooker, coupling of connector parts 10 and 11 connecting the gas cooker into the gas supply distribution system of the domes tic premises.
At the end of the sleeve 21 which is inserted into the body 14 is a stem 23 carried by an apertured plate 24. The length of that part of the sleeve 21 inserted into the body 14 is such that the stem 23 abuts the valve 18 and pushes it off its seat 17 against the action of the spring 19.
Thus, when connector parts 10, 11 are coupled together, the valve 18 is always open and gas can flow to the gas cooker via the flexible hose 22.
So far the gas supply connector described is conventional.
This invention is concerned with ensuring automatic closure of the valve 18 in the event of fire thus considerably reducing the risk of explosion and obviating further supply of gas to the fire area.
In Fig. 2, this is achieved by forming the stem 23 and the plate 24 of a thermoplastics material or a low melting point alloy and suitably securing same in the end of sleeve 21.
It will be manifest that when a predetermined temperature is attained as a result of fire, the stem 23 and plate 24 will melt thus allowing spring 19 to close valve 18 on its seat 17.
Alternatively the stem 23 and plate 24 may be of metal and be retained in position in the sleeve 21 by a low melting point solder which on melting will allow valve closure as aforesaid, the stem 23 and plate 24 being simply pushed along the sleeve 21.
Yet another alternative is for the stem 23 only to be made of thermoplastic material and secured to the plate 24 by a low melting point solder.
It is considered that the most economic, convenient and efficiently fail safe construction is the stemmed cruciform plate of thermoplastics material suitably fitted into the end of the sleeve.
With the present invention the risk of a major gas fire and/or explosion is very considerably minimised.
WHAT I CLAIM IS: 1. A gas supply connector of the type aforesaid in which the stem is formed of a low melting material or is retained in position on the sleeve by a low melting material whereby, upon attainment of a predetermined temperature in the event of fire, either the stem melts or it is released so as to be movable by the valve closing under spring pressure.
2. A connector as claimed in claim I in which both the valve-opening stem and its apertured support plate are formed of a thermoplastics or a low melting point alloy.
3. A connector as claimed in claim I, in which there is a low melting point solder connection between the apertured support plate and sleeve.
4. A connector as claimed in claim 1, in which there is a low melting point solder connection between the apertured support plate and the stem formed of thermoplastics material or low melting point alloy.
5. A gas supply connector of the type aforesaid, substantially as hereinbefore described with reference to the accompanying drawings.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. tic premises. At the end of the sleeve 21 which is inserted into the body 14 is a stem 23 carried by an apertured plate 24. The length of that part of the sleeve 21 inserted into the body 14 is such that the stem 23 abuts the valve 18 and pushes it off its seat 17 against the action of the spring 19. Thus, when connector parts 10, 11 are coupled together, the valve 18 is always open and gas can flow to the gas cooker via the flexible hose 22. So far the gas supply connector described is conventional. This invention is concerned with ensuring automatic closure of the valve 18 in the event of fire thus considerably reducing the risk of explosion and obviating further supply of gas to the fire area. In Fig. 2, this is achieved by forming the stem 23 and the plate 24 of a thermoplastics material or a low melting point alloy and suitably securing same in the end of sleeve 21. It will be manifest that when a predetermined temperature is attained as a result of fire, the stem 23 and plate 24 will melt thus allowing spring 19 to close valve 18 on its seat 17. Alternatively the stem 23 and plate 24 may be of metal and be retained in position in the sleeve 21 by a low melting point solder which on melting will allow valve closure as aforesaid, the stem 23 and plate 24 being simply pushed along the sleeve 21. Yet another alternative is for the stem 23 only to be made of thermoplastic material and secured to the plate 24 by a low melting point solder. It is considered that the most economic, convenient and efficiently fail safe construction is the stemmed cruciform plate of thermoplastics material suitably fitted into the end of the sleeve. With the present invention the risk of a major gas fire and/or explosion is very considerably minimised. WHAT I CLAIM IS:
1. A gas supply connector of the type aforesaid in which the stem is formed of a low melting material or is retained in position on the sleeve by a low melting material whereby, upon attainment of a predetermined temperature in the event of fire, either the stem melts or it is released so as to be movable by the valve closing under spring pressure.
2. A connector as claimed in claim I in which both the valve-opening stem and its apertured support plate are formed of a thermoplastics or a low melting point alloy.
3. A connector as claimed in claim I, in which there is a low melting point solder connection between the apertured support plate and sleeve.
4. A connector as claimed in claim 1, in which there is a low melting point solder connection between the apertured support plate and the stem formed of thermoplastics material or low melting point alloy.
5. A gas supply connector of the type aforesaid, substantially as hereinbefore described with reference to the accompanying drawings.
GB1375877A 1978-05-05 1978-05-05 Gas supply systems Expired GB1594982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1375877A GB1594982A (en) 1978-05-05 1978-05-05 Gas supply systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1375877A GB1594982A (en) 1978-05-05 1978-05-05 Gas supply systems

Publications (1)

Publication Number Publication Date
GB1594982A true GB1594982A (en) 1981-08-05

Family

ID=10028824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1375877A Expired GB1594982A (en) 1978-05-05 1978-05-05 Gas supply systems

Country Status (1)

Country Link
GB (1) GB1594982A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187822A (en) * 1986-03-11 1987-09-16 Marshall Glen Hall Safety valve
US4775101A (en) * 1986-03-11 1988-10-04 Hall Marshall G Safety valve
US4887631A (en) * 1989-01-26 1989-12-19 Itt Corporation Fire isolation device
US5738088A (en) * 1995-08-23 1998-04-14 Draeger Limited Breathing apparatus
FR2850445A1 (en) * 2003-01-29 2004-07-30 Persohn Sa Coupling, especially for connecting water meter to inlet/outlet pipes, incorporates rotary ring with lugs to engage with grooves in pipe connector
EP1443256A1 (en) * 2003-01-29 2004-08-04 Persohn S.A. Connecting device with rotating ring for a water meter unit
GB2425339A (en) * 2005-04-23 2006-10-25 Euro Plumbing Supplies Ltd End fitting
DE102019132152A1 (en) * 2019-11-27 2021-05-27 Schako Klima Luft Ferdinand Schad Kg Device for triggering an actuating element
US20230144489A1 (en) * 2020-05-26 2023-05-11 Bayerische Motoren Werke Aktiengesellschaft Line Coupling Assembly

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2187822A (en) * 1986-03-11 1987-09-16 Marshall Glen Hall Safety valve
US4775101A (en) * 1986-03-11 1988-10-04 Hall Marshall G Safety valve
GB2187822B (en) * 1986-03-11 1990-01-10 Marshall Glen Hall Safety valve
US4887631A (en) * 1989-01-26 1989-12-19 Itt Corporation Fire isolation device
US5738088A (en) * 1995-08-23 1998-04-14 Draeger Limited Breathing apparatus
FR2850445A1 (en) * 2003-01-29 2004-07-30 Persohn Sa Coupling, especially for connecting water meter to inlet/outlet pipes, incorporates rotary ring with lugs to engage with grooves in pipe connector
EP1443256A1 (en) * 2003-01-29 2004-08-04 Persohn S.A. Connecting device with rotating ring for a water meter unit
GB2425339A (en) * 2005-04-23 2006-10-25 Euro Plumbing Supplies Ltd End fitting
GB2425339B (en) * 2005-04-23 2009-11-11 Euro Plumbing Supplies Ltd End fitting
DE102019132152A1 (en) * 2019-11-27 2021-05-27 Schako Klima Luft Ferdinand Schad Kg Device for triggering an actuating element
EP3828449A1 (en) * 2019-11-27 2021-06-02 SCHAKO Klima Luft Ferdinand Schad KG Device for releasing an actuating element
US20230144489A1 (en) * 2020-05-26 2023-05-11 Bayerische Motoren Werke Aktiengesellschaft Line Coupling Assembly

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970505