CN1410139A - Gas pipeline fire arrester having automatic safety valve - Google Patents
Gas pipeline fire arrester having automatic safety valve Download PDFInfo
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- CN1410139A CN1410139A CN 01134016 CN01134016A CN1410139A CN 1410139 A CN1410139 A CN 1410139A CN 01134016 CN01134016 CN 01134016 CN 01134016 A CN01134016 A CN 01134016A CN 1410139 A CN1410139 A CN 1410139A
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- valve
- housing
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- fire
- end cap
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Abstract
A fire stop device with automatic safety valve for gas pipeline is composed of a casing connected with gas pipe, a fire stop core in the said casing, an end cover with air holes, and a safety valve for automatically closing the gas channel when a back-fire takes place. Its advantages are simple structure, small size, low cost and high fire stop performance.
Description
Technical field
The present invention relates to the safety device of domestic gas pipe-line equipment.
Background technology
China's city gas pipelineization is more universal at present, as piped gas, and pipe natural gas, pipeline liquefied gas etc.In recent years, because of using the improper or gas kitchen ranges fault of combustion gas method to cause tempering to cause that the gas meter, flow meter explosion accident happens occasionally.The blast of gas meter, flow meter tends to cause the control valve in this table the place ahead malfunctioning, makes can't carry out shutoff operation at that time.Its result then causes a large amount of combustion gas ejections, initiation personnel injury or large-scale explosion accident.A kind of device that can prevent above-mentioned accident potential is disclosed among CN00202082.3, the CN00101313.0: antiexplosion and fire-stopping unit for domestic gasometer of pipeline gas.In case its function is when the tempering accident takes place, by spark arrester with fray-out of flame.But from its structure, this device can not be closed blast tube simultaneously in the process of fray-out of flame, and a large amount of gas leakages also can cause explosion accident to indoor.Goal of the invention
The objective of the invention is to,, provide a kind of safety device that back fire flame can be extinguished and can the automatic self-closing gas passage at the deficiency of existing antiexplosion and fire-stopping unit for domestic gasometer of pipeline gas function.
Summary of the invention
Purpose of the present invention is realized by following mode.
The gas pipeline fire arrester of band automatic blow off valve of the present invention, include housing that is connected with gas pipeline and the fire-retardant core that is arranged in the housing, the interface of connecting with the kitchen range pipeline is perpendicular to the fire-retardant core axis, be provided with the split end cap that connects by threaded connector in the housing termination, it is characterized in that, in housing, also be provided with the safety valve of energy automatic self-closing gas gas circuit when tempering takes place; Be distributed with aperture on the split end cap of described housing in order to ventilation.Described safety valve comprises valve seat, valve, valve rod, cuts out and resetting-mechanism automatically, the periphery of valve seat closely contacts with the inner surface of housing, its center is provided with the mesopore as blast tube, the valve rod of fixedlying connected with valve extends to outside the housing after passing the fire-retardant core centre bore, and its termination is provided with the reset key that makes things convenient for people's hand operated; Automatically close to include with valve rod with resetting-mechanism and be fixed into holistic diaphragm seal and elastic component, its diaphragm seal periphery is fixed on the shell body by the threaded connector of split end cap, and its mider hole is set on the valve rod, and by pressing plate it closely is connected; On valve rod and split end cap, also be fixed be used to guarantee valve be in close, the elastic component of enable possition; Described diaphragm seal is corrosion resistant flexible thin-film material, for example, and the technically classified rubber film.
The gas pipeline fire arrester of band automatic blow off valve of the present invention is connected on the pipeline between kitchen range and gas meter, flow meter.When tempering takes place when, flame enters this device along pipeline, combustible gas in the expansion cavity between fire-retardant core and diaphragm seal is lighted, the gas volume of burning expands rapidly and promotes diaphragm seal and moves to the split end cap, driving the valve rod generation thus moves axially, valve is clung on the valve body, close blast tube.Enter the flame behind the expansion cavity because the effect of rarefaction wave reduces its spread speed, continue upstream to be moved into behind the fire-retardant core by extinguishing.The gas pipeline fire arrester of band automatic blow off valve of the present invention, extinguishing tempering rapidly, and can prevent that gas leakage causes contingency after fray-out of flame at short notice with the blocking-up of combustion gas gas circuit, further improved the safety in utilization of gas-fired equipment.
The gas pipeline fire arrester of band automatic blow off valve of the present invention can use on general family pipe gas equipment, has delicate structure, and volume is little, low cost of manufacture, and the back-fire relief performance is good, and is safe and reliable, and operation and maintenance is advantage easily.For different combustion gas kinds, as piped gas, pipe natural gas, liquefied gas etc.This device also can be used for the restaurant, in the kitchen range facility of public catering trade such as dining room, can effectively guarantee the person and property safety.
Be further described below by embodiment and accompanying drawing thereof.
Description of drawings
Fig. 1 is a kind of embodiment overall schematic of the present invention.Adopted full section among the figure.
Fig. 2 is an another kind of embodiment overall structure schematic diagram of the present invention.Adopted full section among the figure.
The specific embodiment
Referring to Fig. 1, (1) is shell body, and its right-hand member interface is provided with internal thread, be used for being connected with external gas pipeline, on it internal thread of end interface be used for be communicated with kitchen range gas pipeline be connected.(2) be valve, it is fixedly connected on the valve rod (4).(3) be valve seat, its mesopore is a blast tube, and its right end face in this hole has good flatness, makes the surface energy and its tight contact of valve.(5) be fire-retardant core, its structure is described identical with CN00202082.3, and difference is that former solid shafting is replaced by hollow shaft (6).The mesopore that valve rod (4) passes hollow shaft and left end cap (8) extends hull outside.(7) being diaphragm seal, is that the industrial anti-corrosive rubber film of 0.5-1.5mm constitutes by thickness.Left end cap (8) and diaphragm seal (7) are fixed on the shell body by threaded connector, and it is protruding from inside to outside that left end cap (8) is taper shape.Also be conical diaphragm seal and be sleeved on the valve rod (4), and be fixed by two relative pressing plates (13).Under the state of valve open, it protruding to the left end cap rightabout, and distance to left end cap is arranged from diaphragm seal middle part greater than distance from valve to the valve seat its right end face.(9) be two and become symmetrically arranged stage clip.(10) be in order to the retainer ring of extension spring to be set, this ring is connected on the valve rod (4).The other end of stage clip is connected on the protrusion of left end cap.(11) be manual button.(12) be dust cover, do not polluted by dust and oil smoke in order to the protection spring mechanism.Under kitchen range operate as normal situation, combustion gas in this device from right-hand member interface right-to-left and the many triangular apertures by passage in the middle of the valve seat (3) and fire-retardant core and on end interface be transported to kitchen range, the normal use of kitchen range is not produced any influence.When being kitchen range generation tempering under improper situation, flame front imports in the spark arrester from last end interface, at first form the combustion zone in the expansion cavity between diaphragm seal and fire-retardant core, having heated the gas in the expansion cavity rapidly makes it to expand, and cause diaphragm seal to be moved to the left fast, then drive valve rod together with valve to left movement, closely contact with its right end face of valve seat up to valve, blast tube is closed automatically.Described two stage clips are the minute-pressure state that contracts when initial, elastic force has component left, makes valve be in stable opening, and plays the effect of locking stem position.When diaphragm seal is moved to the left fast and drive valve rod to left movement, the decrement of stage clip is increased; After centre position (axle of spring is vertical with valve rod axis), elastic force has component to the right, makes valve be in stable closure state.At valve from right and in the action of a left side, the flame in the expansion cavity is also propagated to the fire-retardant core direction, and because the cold-wall effect of fire-retardant core and by extinguishing.In the time will reusing combustion gas, available hand propelled reset key (11) then valve rod drive valve leaves the closed position to the right, and the combustion gas gas circuit recloses.
Referring to Fig. 2, in the present embodiment shell body right-hand member interface among the last embodiment is reached the female thread structure of going up end interface and change to the back taper pipe joint structure, with flexibly connecting of realization and soft pipeline, all the other internal structures are identical with a last embodiment.Present embodiment can be installed in any position in the flexible pipe between kitchen range and the gas meter, flow meter easily, and its effect is also identical with a last embodiment with operation principle.
Claims (2)
1. gas pipeline fire arrester with automatic blow off valve, include housing that is connected with gas pipeline and the fire-retardant core that is arranged in the housing, the interface of connecting with the kitchen range pipeline is perpendicular to the fire-retardant core axis, be provided with the split end cap that connects by threaded connector as sealing in the housing termination, it is characterized in that, be distributed with aperture on the split end cap of described housing in order to ventilation; In housing, also be provided with the safety valve of energy automatic self-closing gas gas circuit when tempering takes place.
2. the gas pipeline fire arrester of band automatic blow off valve as claimed in claim 1, it is characterized in that, described safety valve comprises valve seat, valve, valve rod, cuts out and resetting-mechanism automatically, the periphery of valve seat closely contacts with the inner surface of housing, its center is provided with the mesopore as blast tube, the valve rod of fixedlying connected with valve extends to outside the housing after passing the fire-retardant core centre bore, and its termination is provided with the reset key that makes things convenient for people's hand operated; Automatically close to include with valve rod with resetting-mechanism and be fixed into holistic diaphragm seal and elastic component, its diaphragm seal periphery is fixed on the shell body by the threaded connector of split end cap, and its mider hole is set on the valve rod, and by pressing plate it closely is connected; On valve rod and split end cap, also be fixed be used to guarantee valve be in close, the elastic component of enable possition; Described diaphragm seal is corrosion resistant flexible thin-film material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011340169A CN1192804C (en) | 2001-09-28 | 2001-09-28 | Gas pipeline fire arrester having automatic safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011340169A CN1192804C (en) | 2001-09-28 | 2001-09-28 | Gas pipeline fire arrester having automatic safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1410139A true CN1410139A (en) | 2003-04-16 |
| CN1192804C CN1192804C (en) | 2005-03-16 |
Family
ID=4672158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011340169A Expired - Fee Related CN1192804C (en) | 2001-09-28 | 2001-09-28 | Gas pipeline fire arrester having automatic safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1192804C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056426A (en) * | 2015-08-13 | 2015-11-18 | 威特龙消防安全集团股份公司 | Low-pressure mist spraying system for fire protection of kitchen |
| CN113750408A (en) * | 2021-09-18 | 2021-12-07 | 柴小清 | Flame arrester with fluctuation type fire retardant core |
| CN116650871A (en) * | 2023-07-26 | 2023-08-29 | 山西红清蓝环保工程有限公司 | Foam nickel flame arrester with self-cleaning function |
-
2001
- 2001-09-28 CN CNB011340169A patent/CN1192804C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056426A (en) * | 2015-08-13 | 2015-11-18 | 威特龙消防安全集团股份公司 | Low-pressure mist spraying system for fire protection of kitchen |
| CN105056426B (en) * | 2015-08-13 | 2018-06-26 | 威特龙消防安全集团股份公司 | A kind of low pressure atomizing system for kitchen fire-fighting |
| CN113750408A (en) * | 2021-09-18 | 2021-12-07 | 柴小清 | Flame arrester with fluctuation type fire retardant core |
| CN113750408B (en) * | 2021-09-18 | 2022-06-14 | 浙江上石化机械有限公司 | Flame arrester with fluctuation type fire retardant core |
| CN116650871A (en) * | 2023-07-26 | 2023-08-29 | 山西红清蓝环保工程有限公司 | Foam nickel flame arrester with self-cleaning function |
| CN116650871B (en) * | 2023-07-26 | 2023-10-17 | 山西红清蓝环保工程有限公司 | Foam nickel flame arrester with self-cleaning function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1192804C (en) | 2005-03-16 |
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Addressee: Chen Jin Document name: Notification of registration procedures and notice of patent for invention |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |