CN108758029A - A kind of pipe gas self-closing valve and its self-closing method - Google Patents
A kind of pipe gas self-closing valve and its self-closing method Download PDFInfo
- Publication number
- CN108758029A CN108758029A CN201810901990.4A CN201810901990A CN108758029A CN 108758029 A CN108758029 A CN 108758029A CN 201810901990 A CN201810901990 A CN 201810901990A CN 108758029 A CN108758029 A CN 108758029A
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- Prior art keywords
- valve rod
- self
- valve
- piston
- closing valve
- Prior art date
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Links
- 238000000034 method Methods 0.000 title claims description 10
- 239000007789 gas Substances 0.000 claims abstract description 69
- 239000000567 combustion gas Substances 0.000 claims abstract description 25
- 238000005192 partition Methods 0.000 claims description 24
- 239000002737 fuel gas Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 230000006837 decompression Effects 0.000 abstract description 4
- 239000002585 base Substances 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
- F16K17/0453—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the member being a diaphragm
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feeding And Controlling Fuel (AREA)
- Safety Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The present invention provides a kind of pipe gas self-closing valve, belongs to gas safety device field.The piston for being mounted with the magnetic valve core of two-part in the pipe gas self-closing valve and coordinating with it, spring is additionally provided on piston, piston moves under the driving of spring force and gaseous-pressure along preset direction, and gas outlet is blocked in extreme position, realize gas self-closing valve being automatically closed under low pressure or decompression state.And in pipeline in the case of overpressure of gas, the first valve rod is automatically separated with the second valve rod energy stress, equally achievees the purpose that close valve.The gas self-closing valve makes it have the defencive function to combustion gas super-pressure, ultralow pressure and decompression situation by the cooperation between piston and magnetic valve core, can effectively prevent the generation of the fortuitous event of gas leakage, ensure that with gas safety.
Description
Technical field
The present invention relates to gas safety device fields, in particular to a kind of pipe gas self-closing valve and its self-closing side
Method.
Background technology
Almost every household is all cooked using natural gas in present city, some families can also natural gas heat supply or burn wash
Bath water.Safety gas and the healthy living of huge numbers of families have closely bound up contact.
Old gas pipeline can usually damage because of sealing device, the breakage of the metal bellows that is connect with gas pipeline or
Person's gas-cooker blocking and other reasons, causes the dangerous situations such as gas leakage, gas pipeline superpressure even gas explosion.Ensure combustion gas
The safe handling of pipeline, preventing gas leakage are to protect the important measures of common people's security of the lives and property.Common gas valve is peace
Mounted in indoor low-pressure fuel gas pipe end, the security protection being connect with burner through hose (can also being connected with metal bellows) fills
It sets, when resident has found to have the case where gas leakage to occur, valve can be turned off manually, combustion gas is prevented further to leak.If occupying
The people do not have found the combustion gas of leakage in time, then very likely cause the dangerous situation of combustion gas poisoning, gas explosion to occur, make resident
Life security be on the hazard.
Invention content
One of the objects of the present invention is to provide a kind of pipe gas self-closing valve, the self-closing valve can realize combustion gas decompression,
Automatic closing function in the case of low pressure, three kinds of superpressure, prevents natural gas leaking from causing damages.
Another object of the present invention is to provide a kind of self-closing method of pipe gas self-closing valve, this method is based on above-mentioned pipe
Road gas self-closing valve has its technical characterstic.
At least one of in order to solve the above-mentioned technical problem, the present invention provides following technical schemes：
A kind of pipe gas self-closing valve, including：Self-closing valve base, inlet channel is offered in self-closing valve base and outlet is logical
Road is provided with working space in the intersection of inlet channel and outlet passageway, is set in the intersection of outlet passageway and working space
It is equipped with partition board, venthole is offered on partition board；The pipe gas self-closing valve further includes the first valve rod, the second valve rod, magnetic part, bullet
Property diaphragm, piston, block head and elastic component, wherein the first valve rod, the second valve rod and piston are fixedly mounted on working space
In, the first valve rod is connect with the second valve rod by magnetic part, and flexible sheet is installed on the second valve rod, and flexible sheet is complete
Cover working space；Convex block is provided on first valve rod, the first end of piston is provided with supporting surface, and convex block connects with supporting surface
It touches；When first valve rod is moved along the first preset direction, convex block push piston moved along the second preset direction, the first preset direction with
The angle of second preset direction is acute angle or right angle.Block head is mounted on the second end of piston, is located in outlet passageway；Block head
Venthole can be blocked completely, and elastic component is mounted between piston and partition board, and when piston is in initial position, elastic component is in freely
State, block head blocks venthole, and when piston is in operating position, elastic component is in compressive state, and block head is de- with venthole
From.
Further, in the alternative embodiment of the present invention, the first valve rod is fixedly mounted close to one end of the second valve rod
Magnetic part.
Further, in the alternative embodiment of the present invention, bullet is fixedly installed between the first end and second end of piston
Spring baffle.
Further, in the alternative embodiment of the present invention, elastic component is spring, and one of spring connects with spring stop
It connects, other end is in contact with partition board.
Further, in the alternative embodiment of the present invention, supporting surface in piston first end is plane, and supporting surface court
First valve rod tilts.
Further, in the alternative embodiment of the present invention, the second valve rod is provided with mounting portion close to one end of magnetic part,
Flexible sheet is circumferentially positioned at mounting portion.
Further, in the alternative embodiment of the present invention, the second valve rod, the first valve rod and piston are plastics material
Matter.
Further, in the alternative embodiment of the present invention, it is fixedly connected with valve deck in self-closing valve base, is opened in the middle part of valve deck
Equipped with through-hole, one end of the second valve rod is pierced by through-hole.
A kind of self-closing method of pipe gas self-closing valve, includes the following steps：
S1：Operator lifts the second valve rod, since the second valve rod and the first valve rod rely on together with magnetic attraction, the second valve
Bar drives the first valve rod to be slided towards valve deck along the first preset direction, and the flexible sheet being connect with the second valve rod is pulled to protuberance,
The convex block of first valve rod pushes piston and slides to partition board along the second preset direction, the block head and venthole point being mounted on piston
From inlet channel is mutually communicated with outlet passageway；Meanwhile the elastic component for being connected to piston and partition board is compressed, elastic force increases；
S2：Combustion gas enters the inlet channel of self-closing valve base, and the pressure that combustion gas generates acts on the flexible sheet of protuberance,
Finally, combustion gas is flowed out from outlet passageway；
S3：Operator unclamps the second valve rod, and the power that combustion gas at this time acts on flexible sheet acts on piston with elastic component
On power mutually balance, so that the second valve rod and the first valve rod is maintained equilbrium position, inlet channel keeps mutual with outlet passageway
Perforation, pipe gas self-closing valve are maintained at opening state；
S4：Fuel gas pipeline leakage, the gaseous-pressure into inlet channel reduce, and combustion gas acts under the power on flexible sheet
Drop, resilient element urges piston is along the second preset direction far from partition board, while the first valve rod and the second valve rod are slided towards self-closing valve base
Dynamic, the flexible sheet being connect with the second valve rod is flattened and is completely covered working space, and closeouts block venthole, pipe gas
Self-closing valve is closed.
The self-closing method of pipe gas self-closing valve is further comprising the steps of：
S1 is repeated to S3；
S5：Gas pipeline accident super-pressure, into the gaseous-pressure superelevation of inlet channel, combustion gas acts on flexible sheet
Power increase suddenly, when this active force is more than magnetic force between the second valve rod and the first valve rod, the second valve rod is detached from the first valve rod, work
For plug along the second preset direction far from partition board, closeouts block venthole, and pipe gas self-closing valve is closed.
Beneficial effects of the present invention include：The pipe gas self-closing valve that embodiment through the invention provides, by certainly
Be provided with inside valve closing two sections of magnetic connections spools and with the matched piston of the spool, realize super in gas pipeline
When pressure, decompression and under-voltage situation occur, the function which is automatically closed ensures that the gas in pipeline is not let out and is exposed on the external
Initiation is dangerous, being capable of hand-reset after troubleshooting in the duct.Further, above-mentioned spool uses plastic material, has
The strong feature of corrosion resistance, can ensure prolonged use.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the diagrammatic cross-section for the pipe gas self-closing valve that present pre-ferred embodiments provide；
Fig. 2 is the schematic diagram that the first valve rod is connect with the second valve rod magnetism in pipe gas self-closing valve shown in Fig. 1；
Fig. 3 is the schematic diagram for the piston that block head is equipped in pipe gas self-closing valve shown in Fig. 1；
Fig. 4 is the schematic diagram of self-closing valve base in pipe gas self-closing valve shown in Fig. 1.
Icon：100- pipe gas self-closing valves；110- carries button；The second valve rods of 121-；1211- mounting portions；122- magnetic parts；
The first valve rods of 123-；1231- convex blocks；124- pistons；1241- supporting surfaces；125- springs；126- block heads；130- valve decks；140-
Self-closing valve base；141- inlet channels；142- outlet passageways；143- partition boards；144- ventholes；150- flexible sheets；160- is pressed
Piece；170- nuts.
Specific implementation mode
To keep the purpose, technical scheme and advantage of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
The every other embodiment that domain those of ordinary skill is obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention to providing in the accompanying drawings is not intended to limit and wants below
The scope of the present invention of protection is sought, but is merely representative of the selected embodiment of the present invention.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained without creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, the instructions such as term "upper", "lower", "inner", "outside", "bottom", "top"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, does not indicate or imply the indicated equipment or element must have a particular orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.Defining the feature of " first ", " second " etc. as a result, can express
Or implicitly include one or more this feature.In the description of the present invention, the meaning of " plurality " is two or two
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, the terms such as term " installation ", " connection ", " fixation " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be directly connected,
Can be indirectly connected through an intermediary the interaction relationship of the connection or two elements inside two elements.It is right
For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or "lower"
It may include that the first and second features are in direct contact, can also not be to be in direct contact but pass through it including the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " include first special
Sign is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include fisrt feature immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Shown in referring to Figures 1 and 2, this pipe gas self-closing valve 100 includes self-closing valve base 140 and is fixedly mounted on certainly
Valve deck 130 on valve closing matrix 140, offers inlet channel 141 and outlet passageway 142, in air inlet in self-closing valve base 140
Channel 141 and the intersection of outlet passageway 142 are provided with working space, and in the intersection of working space and outlet passageway 142
It is provided with partition board 143, a venthole 144 has been opened up on partition board 143, the first valve rod 123, are installed in the working space
Two valve rods 121 and piston 124 are fixedly connected with magnetic part 122 on the first valve rod 123 on one end of the second valve rod 121,
First valve rod 123 is magnetically coupled to together by the magnetic part 122 and the second valve rod 121.First valve rod 123 and the second valve rod
121 can move along the first preset direction, and convex block 1231 is provided on the first valve rod 123, on the convex block 1231 and piston 124
Supporting surface 1241 is in contact.When the first valve rod 123 is when the first preset direction moves, which can push 124 edge of piston
Second preset direction moves.
First preset direction is vertical with the second preset direction, in other alternative embodiments, the first preset direction and second
The angle of preset direction may be acute angle.One end opposite with supporting surface 1241 is equipped with block head 126 on piston 124,
The block head 126 is located at outlet passageway 142 above-mentioned, and the block head 126 can block venthole 144 above-mentioned completely.?
Spring 125, when piston 124 is moved along the second preset direction towards partition board 143, bullet are provided between piston 124 and partition board 143
Spring 125 become from initial free state got lodged in originally for compressive state the block head 126 of venthole 144 also with venthole 144
It is detached from.
Further, it is provided with mounting portion 1211 on one end of the first valve rod 123 in the second valve rod 121, installed
Flexible sheet 150 is fixedly mounted in portion 1211, which can cover all working space.In elastic membrane
The top of piece 150, the second valve rod 121 bar portion around be arranged tabletting 160, nut 170 is additionally provided with above tabletting 160,
By tightening nut 170, tabletting 160 is compressed, you can flexible sheet 150 to be secured firmly on the second valve rod 121, make the bullet
Property diaphragm 150 will not loosen when by the intense impact of combustion gas.
Further, it is fixedly connected in one end of the second valve rod 121 and carries button 110, one has been opened up at the center of valve deck 130
A circular open, the button 110 above-mentioned that carries are placed in the circular open, and part is exposed at outside valve deck 130.
Further, the first valve rod 123 is fixed with magnetic part 122, the first valve rod 123 close to one end of the second valve rod 121
It is connect with 121 magnetism of the second valve rod by magnetic part 122.Magnetic part 122 shown in Fig. 1 is fixed by way of screw fastening
On the end of the first valve rod 123, in other embodiments, magnetic part 122 can also be bonded or be connected to the first valve rod
On 123.
With reference to shown in Fig. 3 and Fig. 4, spring stop is arranged around piston 124, spring stop is substantially in annular shape, bullet
One end of spring 125 is connected to the spring stop, and the other end and partition board 143 above-mentioned are to contacting.When piston 124 is along the second default side
To when movement, which moves together with piston 124, and compresses spring 125 above-mentioned.
Further, one end on piston 124 close to the first valve rod 123 is provided with supporting surface 1241, the supporting surface 1241
It is in contact with the convex block 1231 on the first valve rod 123.The supporting surface 1241 tilts for plane and towards 123 direction of the first valve rod, when
When first valve rod 123 is moved along the first preset direction, convex block 1231 can close to supporting surface 1241 move, and by piston 124 to every
143 direction of plate pushes away.
In order to improve the service life of the pipe gas self-closing valve 100, the first valve rod 123 above-mentioned, the second valve rod 121 with
And piston 124 has been all made of anticorrosive, anti acid alkali performance gas plastics and has been processed manufacture.
The self-closing method of the pipe gas self-closing valve 100 is as follows：First, operator's pull-up carries button 110, drives the second valve rod
121 and moved towards valve deck 130 along the first preset direction with magnetic the first valve rod 123 connecting of the second valve rod 121, at this time with
The flexible sheet 150 of second valve rod 121 connection is pulled to protuberance, and the convex block 1231 on the first valve rod 123 pushes piston 124 along the
Two preset directions move, and the block head 126 being mounted on piston 124 is detached from venthole 144, and inlet channel 141 is logical with outlet
It is mutually communicated between road 142；Meanwhile the spring 125 being connected between spring stop and partition board 143 is compressed.
Then, combustion gas enters 150 position of the arrival flexible sheet of self-closing valve base 140 from air inlet, what combustion gas generated
Pressure acts on the flexible sheet 150 of protuberance, and finally, combustion gas is flowed out from outlet passageway 142.
Operator, which unclamps, carries button 110, and the power that combustion gas at this time acts on flexible sheet 150 acts on piston with spring 125
Power on 124 balances each other, and the second valve rod 121 and the first valve rod 123 maintain equilbrium position under the action of above-mentioned equilibrant force, into
Gas channel 141 is mutually communicated with the holding of outlet passageway 142, and pipe gas self-closing valve 100 works normally；
In fuel gas pipeline leakage, the gaseous-pressure into the self-closing valve can reduce, and combustion gas acts on flexible sheet 150
Power reduce, compressed spring 125 pushes piston 124 to be slided to the direction far from partition board 143 before, block head 126 with go out
Stomata 144 contacts again, and pipe gas self-closing valve 100 is closed；
When occurring the case where gas pipeline accident super-pressure, into the gaseous-pressure superelevation of inlet channel 141, combustion gas is made
Increased suddenly with the power on flexible sheet 150, when this active force is more than the magnetic force between the second valve rod 121 and the first valve rod 123, the
Two valve rods 121 and the first valve rod 123 are detached from, and compressed spring 125 pushes piston 124 to the direction far from partition board 143 before
Sliding, block head 126 contact again with venthole 144, and pipe gas self-closing valve 100 is closed；
The pipe gas self-closing valve 100 is provided with the magnetic valve core of two-part and the piston 124 with spool cooperation, leads to
The equilibrant force crossed between piston 124 and magnetic valve core opens and closes the pipe gas self-closing valve 100, and further, this two
The magnetic valve core of segmentation is connected independent first valve rod 123 and the second valve rod 121 by magnetic substance so that this is self-closing
Valve can be in pipeline in the case of overpressure of gas, and the first valve rod 123 of realization is automatically separated with the second valve rod 121, and is closed
The purpose of valve.The generation for preventing fortuitous event ensure that with gas safety.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of pipe gas self-closing valve, which is characterized in that including：
Self-closing valve base offers inlet channel and outlet passageway in the self-closing valve base, the inlet channel with it is described
The intersection of outlet passageway is provided with working space, the intersection of the outlet passageway and the working space be provided with every
Plate offers venthole on the partition board；
First valve rod, the second valve rod, magnetic part, flexible sheet and piston, first valve rod, second valve rod, the work
Plug is fixedly mounted on the working space, and first valve rod is connect with second valve rod by the magnetic part magnetism,
The flexible sheet is installed on second valve rod, the working space is completely covered in the flexible sheet；Described
Convex block is provided on one valve rod, the first end of the piston is provided with supporting surface, and the convex block is in contact with the supporting surface；Institute
When stating supporting surface and being configured to first valve rod and moved along the first preset direction, described in the convex block is pushed along the supporting surface
Piston is moved along the second preset direction, and the angle of first preset direction and second preset direction is acute angle or right angle,
And
Block head and elastic component, the block head are mounted on the second end of the piston, are located at the outlet passageway；The closure
Head can block the venthole completely, and the elastic component is mounted between the piston and the partition board, and the piston is in just
When beginning position, the elastic component is in free state, and the block head blocks the venthole；The piston is in operating position
When, the elastic component is in compressive state, and the block head is detached from the venthole.
2. pipe gas self-closing valve according to claim 1, which is characterized in that first valve rod is close to second valve
The magnetic part is fixedly mounted in one end of bar.
3. pipe gas self-closing valve according to claim 1, which is characterized in that the first end of the piston with it is described
Spring stop is fixedly installed between second end.
4. pipe gas self-closing valve according to claim 3, which is characterized in that the elastic component is spring, the spring
One connect with the spring stop, other end is in contact with the partition board.
5. pipe gas self-closing valve according to claim 1, which is characterized in that the supporting surface is plane, and described is supported
It holds and faces the first valve rod inclination.
6. pipe gas self-closing valve according to claim 1, which is characterized in that second valve rod is close to the magnetic part
One end be provided with mounting portion, the flexible sheet is circumferentially positioned at the mounting portion.
7. pipe gas self-closing valve according to claim 1, which is characterized in that second valve rod, first valve rod
And the piston is plastic material.
8. pipe gas self-closing valve according to claim 1, which is characterized in that be fixedly connected in the self-closing valve base
Valve deck offers through-hole on the valve deck, and one end of second valve rod is pierced by the through-hole.
9. a kind of self-closing method of pipe gas self-closing valve, includes the following steps：
S1：Operator lifts the second valve rod, and second valve rod drives first valve rod along the first preset direction using magnetic force
It is slided towards valve deck, the flexible sheet being connect with second valve rod is pulled to protuberance, and the convex block of first valve rod pushes work
Plug slides to partition board along the second preset direction, and the block head on the piston is detached with venthole, inlet channel and outlet
Channel is mutually communicated；Meanwhile the elastic component for being connected to the piston and the partition board is compressed；
S2：Combustion gas enters the inlet channel of self-closing valve base, and the pressure that combustion gas generates acts on the elastic membrane of protuberance
On piece, finally, combustion gas are flowed out from the outlet passageway；
S3：Operator unclamps second valve rod, and the power that combustion gas at this time acts on the flexible sheet is made with the elastic component
Mutually balanced with the power on the piston, second valve rod and first valve rod made to maintain equilbrium position, it is described into
Gas channel is mutually communicated with outlet passageway holding, and pipe gas self-closing valve is maintained at opening state；
S4：Fuel gas pipeline leakage, the gaseous-pressure into the inlet channel reduce, and combustion gas acts on the flexible sheet
Power declines, piston described in the resilient element urges along second preset direction far from the partition board, while first valve rod
It is slided towards the self-closing valve base with second valve rod, the flexible sheet being connect with second valve rod is flattened and complete
All standing working space, the closeouts block the venthole, and the pipe gas self-closing valve is closed.
10. the self-closing method of pipe gas self-closing valve according to claim 9, which is characterized in that further comprising the steps of：
S1 is repeated to S3；
S5：Gas pipeline accident super-pressure, into the gaseous-pressure superelevation of the inlet channel, combustion gas acts on the elastic membrane
The power of on piece increases suddenly, when this active force is more than the magnetic force between second valve rod and first valve rod, second valve rod
It is detached from first valve rod, the piston along second preset direction far from the partition board, block described by the closeouts
Venthole, the pipe gas self-closing valve are closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901990.4A CN108758029A (en) | 2018-08-09 | 2018-08-09 | A kind of pipe gas self-closing valve and its self-closing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901990.4A CN108758029A (en) | 2018-08-09 | 2018-08-09 | A kind of pipe gas self-closing valve and its self-closing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108758029A true CN108758029A (en) | 2018-11-06 |
Family
ID=63969476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810901990.4A Pending CN108758029A (en) | 2018-08-09 | 2018-08-09 | A kind of pipe gas self-closing valve and its self-closing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108758029A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623155A (en) * | 2019-02-28 | 2020-09-04 | 宁波方太厨具有限公司 | Pressure protection valve and gas water heater |
| CN112096935A (en) * | 2020-09-29 | 2020-12-18 | 陕西大唐燃气安全科技股份有限公司 | Gas self-closing valve |
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| CN114278942A (en) * | 2021-11-11 | 2022-04-05 | 上海翰逸环保科技有限公司 | Microwave plasma treatment solid waste device with rotary kiln structure |
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Application publication date: 20181106 |