CN108708998A - A kind of gas self-closing valve - Google Patents
A kind of gas self-closing valve Download PDFInfo
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- CN108708998A CN108708998A CN201810580686.4A CN201810580686A CN108708998A CN 108708998 A CN108708998 A CN 108708998A CN 201810580686 A CN201810580686 A CN 201810580686A CN 108708998 A CN108708998 A CN 108708998A
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- gas
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- 239000007789 gas Substances 0.000 claims abstract description 153
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 239000000567 combustion gas Substances 0.000 claims abstract description 58
- 210000000056 organ Anatomy 0.000 claims abstract description 54
- 238000003860 storage Methods 0.000 claims abstract description 39
- 238000012423 maintenance Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000005452 bending Methods 0.000 claims description 83
- 230000006835 compression Effects 0.000 claims description 37
- 238000007906 compression Methods 0.000 claims description 37
- 125000004122 cyclic group Chemical group 0.000 claims description 35
- 230000000694 effects Effects 0.000 claims description 23
- 210000003205 muscle Anatomy 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 9
- 230000008034 disappearance Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 210000000746 body region Anatomy 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005096 rolling process Methods 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
- 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
-
- 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
- F16K17/048—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 combined with other safety valves, or with pressure control devices
-
- 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
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
-
- 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
- F16K17/30—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 spring-loaded
Abstract
The present invention provides a kind of gas self-closing valves, including：Main valve body, forward closing organ, overpressure protection mechanism and diaphragm；The air inlet of main valve body, gas outlet respectively with gas storage equipment and be connected with the pipeline of gas equipment and be connected；The opening of diaphragm and main valve body is tightly connected；When the present level that diaphragm is heaved towards its upside is not more than setting height; it can keep connecting with overpressure protection mechanism; and applies to overpressure protection mechanism and maintain vertical pulling force; when superpressure phenomenon occurring in pipeline; heave object height; so that overpressure protection mechanism is detached with diaphragm, object height is more than setting height；Overpressure protection mechanism is applied to forward closing organ according to vertical pulling force and maintenance level thrust, and when being detached with diaphragm, horizontal thrust disappears；Forward closing organ forms air gap when horizontal thrust disappears with the inner wall of main valve body and is connect with the inner wall sealing of main valve body when by horizontal thrust.The safety that combustion gas uses process can be improved in technical solution through the invention.
Description
Technical field
The present invention relates to electrical engineering technical field, more particularly to a kind of gas self-closing valve.
Background technology
With the development of society, combustion gas have become the widely used clean energy resource of industrial production and people's daily life institute it
One.
When using combustion gas, combustion gas usually liquefaction is stored in the gas storage equipment of can-like, and gas storage equipment can pass through setting
There is the pipeline of control valve to be connected with gas equipment, user can act on control valve by external force, with to passing through pipe in storage facilities
The flow that road is transmitted to the combustion gas of gas equipment is adjusted.
Since the pressure of combustion gas in gas storage equipment is far above atmospheric pressure, once obstruction occurs for pipeline or control valve is turned off
When, superpressure phenomenon can then occur for channel interior, pipeline may be caused to be broken or come off, so as to cause gas storage equipment memory
The combustion gas of storage is revealed, and security risk is larger.
Invention content
An embodiment of the present invention provides a kind of gas self-closing valves, and the safety that combustion gas uses process can be improved.
The present invention provides a kind of gas self-closing valves, including：
Main valve body, forward closing organ, overpressure protection mechanism and diaphragm；Wherein,
The air inlet of the main valve body is connect with gas storage equipment, and the gas outlet of the main valve body passes through pipeline and gas equipment
It is connected；
The forward closing organ is mounted on region adjacent with the air inlet in the main valve body；
Opening is provided on the main valve body, the diaphragm is mounted on the opening and is sealed to the opening；
The overpressure protection mechanism is mounted in the main valve body, and positioned at the downside of the diaphragm；
The diaphragm can be under the effect of the pressure of combustion gas towards heaving on the upside of the diaphragm；
When the present level that the diaphragm is heaved is not more than the setting height, the diaphragm can be with the overpressure protection machine
Structure keeps connection, and applies to the overpressure protection mechanism and maintain vertical pulling force；When superpressure phenomenon occurring in the pipeline, institute
Stating diaphragm can be under the effect of the pressure of combustion gas towards heaving object height on the upside of the diaphragm so that the overpressure protection mechanism
It is detached with the diaphragm, the object height is more than the setting height；
When the overpressure protection mechanism is by the vertical pulling force, simultaneously maintenance level can be applied to the forward closing organ
Thrust；When the overpressure protection mechanism is detached with the diaphragm, the horizontal thrust disappears；
The forward closing organ can form air gap with the inner wall of the main valve body, make when by the horizontal thrust
It obtains the combustion gas stored in the gas storage equipment and the pipeline is entered by the air inlet, the air gap, the gas outlet；Institute
When stating horizontal thrust disappearance, the forward closing organ is connect with the inner wall sealing of the main valve body.
Preferably,
Further comprise：Support upper cover, pull-button, T shapes pull rod, spring pocket and return spring；Wherein,
The support upper cover is mounted on the main valve body, is located at the upside of the diaphragm；
The spring pocket includes a pipe and a positioning plate；
The return spring is socketed on the pipe, and the first end of the return spring is connected with the positioning plate, institute
Return spring second end is stated with the lower wall of the support upper cover to be connected；
The positioning plate and the return spring are located at the downside of the support upper cover；
The first end of the pipe is connected with the positioning plate, and the second end of the pipe is by the downside for supporting upper cover
To the upside of the support upper cover, the second end of the pipe is connected through-hole across the support upper cover with the pull-button；
The bar portion of the T shapes pull rod is connected through the pull-button, the pipe and with the diaphragm；
The impulse stroke of the return spring is not more than the setting height；
The pull-button can be moved towards the upside of the support upper cover under external force, to drive the T shapes pull rod court
Move to the upside of the support upper cover, and described to support upper cover and the positioning plate to the institute that is socketed on the pipe
Return spring is stated to be compressed；When acting on the external force disappearance of the pull-button, the compressed return spring is answered
Position carries out resetting movement with the downside for driving the pull-button towards the support upper cover；
The diaphragm can be driven towards the upper of the diaphragm towards the T shapes pull rod of the upside movement of the support upper cover
It heaves side.
Preferably,
Further include：Flat head screw, nut and gasket；
It is provided on the upside of the diaphragm and the integrally formed cyclic annular tabletting of the diaphragm；
The screw rod of the flat head screw is fixedly connected with the bar portion of the T shapes pull rod；
The head of the flat head screw is wrapped in the cyclic annular tabletting；
The gasket and nut are mounted on the screw rod of the flat head screw；
Pretightning force between nut and the flat head screw can make the gasket with the flat head screw to the cyclic annular pressure
Piece is compressed, to be fixedly connected to the diaphragm and the flat head screw.
Preferably,
The overpressure protection mechanism, including：Positioning pin, bending lever, guide groove, guide rod and stress magnet；Wherein,
The guide groove is mounted in the main valve body；
The stress magnet is mounted on the first end of the guide rod；
The second end of the guide rod is inserted into the guide groove；
The fulcrum of the bending lever is connected by the positioning pin with the main valve body；
It is provided with location hole on the guide rod；
The first end of the bending lever passes through the location hole；
When the present level that the diaphragm is heaved is not more than the setting height, the head of the flat head screw is answered with described
The magnetic attraction formed between power magnet makes the diaphragm keep connecting with the stress magnet；The diaphragm heaved is according to institute
It states magnetic and applies and maintain vertical pulling force to the stress magnet, drive the stress magnet and the guide rod so that described
Guide rod is in the guide groove towards present level described in the motion of membrane；
The bending lever can be driven to be sent out around the positioning pin towards the guide rod of the motion of membrane present level
Life rotates in the forward direction so that the second end of the bending lever is moved by the gas outlet towards the direction of the air inlet, to institute
It states forward closing organ and applies simultaneously maintenance level thrust；
The bending lever is when the stress magnet is detached with the diaphragm, to the institute of forward closing organ application
Horizontal thrust disappearance is stated, can be reversely rotated around the positioning pin so that the second end of the bending lever is by the air inlet
The direction of mouth towards the gas outlet moves；
When the stress magnet is detached with the diaphragm, the guide rod can be directed away from the film in the guide groove
The direction of piece moves；
The diaphragm under the pressure effect of combustion gas towards when heaving the object height on the upside of the diaphragm, combustion gas
Pressure effect overcomes the magnetic attraction formed between the stress magnet and the head of the flat head screw so that described to answer
Power magnet is detached with the diaphragm.
Preferably,
The overpressure protection mechanism further includes：Phase magnet；Wherein,
The phase magnet is mounted on the inner wall of the main valve body；
The location hole camber structure；
On the bending lever with the adjacent arc-shaped structure in region of the bending first end of lever and can be described fixed
It stretches in hole position；
When the stress magnet is detached with the diaphragm, between the phase magnet and the first end of the bending lever
The magnetic attraction of formation can drive the bending lever to be reversely rotated around the positioning pin so that the first of the bending lever
It holds towards phase magnet movement and is connected with the phase magnet, the second end of the bending lever is by the air inlet court
It is moved to the direction of the gas outlet, and the guide rod is made to be directed away from the direction of the diaphragm in the guide groove
Movement；
The guide rod of the direction movement of the diaphragm is directed away from the guide groove can drive the stress magnetic
Iron is moved towards the guide groove.
Preferably,
Limit hole there are one being respectively set on two mutual corresponding side walls of the guide groove；
The first end interval of the bending lever passes through two limit holes and a location hole；
When the height that the diaphragm is heaved is 0, the first end of the bending lever is connected with the phase magnet；
When the first end of the bending lever is connected with the phase magnet, the bending lever and two limit holes
Lower edge contact；
The diaphragm is answered according to the magnetic attraction formed between the stress magnet and the head of the flat head screw to described
Power magnet applies and maintains vertical pulling force, and the stress magnet and the guide rod is driven to be set towards described in the motion of membrane
When set a distance, the bending lever is contacted with the upper edge of two limit holes.
Preferably,
The forward closing organ, including：Locating piece, compression spring, pole shutoff and seal washer；Wherein,
The locating piece is fixedly connected with the inner wall of the main valve body；
The first end of the compression spring is fixedly connected with the locating piece, the second end of the compression spring and the pass
The first end for closing bar is fixedly connected；
The seal washer is arranged on the pole shutoff；
When the second end of the bending lever is moved by the gas outlet towards the direction of the air inlet, the bending thick stick
The second end of bar applies to the second end of the pole shutoff and maintenance level thrust；It is described bending lever second end by it is described into
When the direction of gas port towards the gas outlet moves, what the second end for bending lever applied to the second end of the pole shutoff
The horizontal thrust disappears；
The pole shutoff is moved by the gas outlet towards the direction of the air inlet under the action of horizontal thrust,
So that forming air gap between the pole shutoff and the inner wall of the main valve body, and compress the compression spring；The pole shutoff exists
When the horizontal thrust disappears, the compressed compression spring resets, and drives the pole shutoff by the air inlet towards institute
State the direction movement of gas outlet so that the gas that the seal washer is formed between the pole shutoff and the inner wall of the main valve body
Gap is sealed.
Preferably,
When the present level that the diaphragm is heaved is the setting height, the compression spring is compressed to limited compression
State.
Preferably,
The inside of the main valve body region adjacent with the air inlet is in truncated cone-shaped cavity structure；
The pole shutoff is moved by the gas outlet towards the direction of the air inlet under the action of horizontal thrust,
So that forming air gap between inner wall corresponding to the pole shutoff and the truncated cone-shaped cavity structure, and compress the pressure bullet
Spring；When the horizontal thrust disappears, the compressed compression spring resets, and drives the pole shutoff by the air inlet direction
The direction of the gas outlet moves so that the seal washer is to corresponding to the pole shutoff and the truncated cone-shaped cavity structure
The air gap formed between inner wall is sealed；
Or,
The region adjacent with the air inlet is provided with circular protrusion inside the main valve body；
The pole shutoff is moved by the gas outlet towards the direction of the air inlet under the action of horizontal thrust,
So that the seal washer is detached with the circular protrusion, to be formed between the pole shutoff and the inner wall of the main valve body
Air gap, and compress the compression spring；For the pole shutoff when the horizontal thrust disappears, the compressed compression spring is multiple
Position, drive the pole shutoff by the air inlet towards the gas outlet direction move so that the seal washer with it is described
Circular protrusion intimate contact, is sealed with the air gap formed between the pole shutoff and the inner wall of the main valve body.
Preferably,
Further include：Current-limiting apparatus；Wherein,
The current-limiting apparatus includes：Ring-type closes seat, sheet closes lid and at least one rubber balances muscle；Wherein,
The cyclic annular gap-free sealed connection of outside wall surface internal face corresponding with the air inlet place for closing seat；
The first end of the rubber balance muscle is connected with the cyclic annular seat of closing, the second end of the rubber balance muscle and institute
It states sheet and closes to cover and be connected；
The cyclic annular internal diameter for closing seat is less than the diameter that the sheet closes lid；
The difference between the pressure inside pressure and the main valve body inside the gas storage equipment, can overcome the rubber
Balance muscle closes lid and the cyclic annular support force for closing seat to drive the sheet to close lid towards the ring to the sheet
Shape closes seat movement, and move distance and the difference proportional.
An embodiment of the present invention provides a kind of gas self-closing valve, the gas self-closing valve is by main valve body, forward closing organ, super
Protection mechanism and diaphragm is pressed to constitute, the air inlet of main valve body can be fixedly connected with the air supply opening of gas storage equipment, the outlet of main valve body
Mouth can be connected by pipeline with gas equipment, and diaphragm is mounted on the opening of main valve body and is sealed to opening, if in use,
Superpressure phenomenon is not occurred in the pipeline being connected with the gas self-closing valve, the pressure for acting on diaphragm of combustion gas is then opposite in main valve body
It is smaller, it is not more than setting height towards the present level heaved on the upside of diaphragm under the smaller pressure effect of diaphragm, diaphragm then may be used
It keeps connecting with overpressure protection mechanism and applies and maintain vertical pulling force to overpressure protection mechanism, overpressure protection mechanism then can be to suitable
Apply simultaneously maintenance level thrust to closing organ, so that forward the inner wall of closing organ and main valve body forms air gap, it is ensured that
The combustion gas stored in gas storage equipment can continue into pipeline by air inlet, air gap, gas outlet；If with the gas self-closing valve phase
Superpressure phenomenon occurs in pipeline even, in main valve body combustion gas act on diaphragm pressure it is then very high, diaphragm can then be made in high pressure
Continue to heave towards on the upside of diaphragm with lower, the present level that diaphragm is heaved reaches the object height not less than setting height, makes
Overpressure protection mechanism is obtained to detach with diaphragm, after separation, diaphragm applies to overpressure protection mechanism and maintains vertical pulling force that can then disappear,
The horizontal thrust that overpressure protection mechanism applies to forward closing organ can also disappear, forward closing organ then can in main valve body
Wall is tightly connected so that the combustion gas in gas storage equipment can not go successively to that superpressure phenomenon occurs by main valve body (gas self-closing valve)
Pipeline, avoid pipeline occur superpressure phenomenon and cause gas storage equipment store combustion gas leak, improve combustion gas use process
Safety.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for gas self-closing valve that one embodiment of the invention provides；
Fig. 2 is the structural schematic diagram for another gas self-closing valve that one embodiment of the invention provides.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, an embodiment of the present invention provides a kind of gas self-closing valves, including：
Main valve body 10, forward closing organ 20, overpressure protection mechanism 30 and diaphragm 40；Wherein,
The air inlet of the main valve body 10 is connect with gas storage equipment, and gas by pipeline and is used in the gas outlet of the main valve body 10
Equipment is connected；
The forward closing organ 20 is mounted on region adjacent with the air inlet in the main valve body 10；
Opening is provided on the main valve body 10, the diaphragm 40 is mounted on the opening and is carried out to the opening close
Envelope；
The overpressure protection mechanism 30 is mounted in the main valve body 10, and positioned at the downside of the diaphragm 40；
The diaphragm 40 can be heaved under the effect of the pressure of combustion gas towards the upside of the diaphragm 40；
When the present level that the diaphragm 40 is heaved is not more than the setting height, the diaphragm 40 can be protected with the superpressure
It protects mechanism 30 and keeps connection, and apply to the overpressure protection mechanism 30 and maintain vertical pulling force；Superpressure occurs in the pipeline
When phenomenon, the diaphragm 40 can heave object height under the effect of the pressure of combustion gas towards the upside of the diaphragm 40 so that institute
It states overpressure protection mechanism 30 to detach with the diaphragm 40, the object height is more than the setting height；
When the overpressure protection mechanism 30 is by the vertical pulling force, it can apply and maintain to the forward closing organ 20
Horizontal thrust；When the overpressure protection mechanism 30 is detached with the diaphragm 40, the horizontal thrust disappears；
The forward closing organ 20 can form gas when by the horizontal thrust with the inner wall of the main valve body 10
Gap so that the combustion gas stored in the gas storage equipment enters the pipe by the air inlet, the air gap, the gas outlet
Road；When the horizontal thrust disappears, the forward closing organ 20 is connect with the inner wall sealing of the main valve body 10.
Embodiment as shown in Figure 1, the gas self-closing valve is by main valve body, forward closing organ, overpressure protection mechanism and film
Piece is constituted, and the air inlet of main valve body can be fixedly connected with the air supply opening of gas storage equipment, the gas outlet of main valve body can by pipeline with
Gas equipment is connected, and diaphragm is mounted on the opening of main valve body and is sealed to opening, if in use, with the gas self-closing valve
Superpressure phenomenon is not occurred in connected pipeline, the pressure for acting on diaphragm of combustion gas is then relatively small in main valve body, and diaphragm is smaller
Pressure effect under towards the present level heaved on the upside of diaphragm be not more than setting height, diaphragm then can be with overpressure protection mechanism
It keeps connecting and applies and maintain vertical pulling force, overpressure protection mechanism can then apply to forward closing organ to overpressure protection mechanism
And maintenance level thrust, so that forward the inner wall of closing organ and main valve body forms air gap, it is ensured that storage in gas storage equipment
Combustion gas can continue into pipeline by air inlet, air gap, gas outlet；If occurring in the pipeline being connected with the gas self-closing valve
Superpressure phenomenon, in main valve body combustion gas act on diaphragm pressure it is then very high, diaphragm can then continue under high pressure effect towards film
It is heaved on the upside of piece, the present level that diaphragm is heaved reaches the object height not less than setting height so that overpressure protection mechanism
Detached with diaphragm, after separation, diaphragm applies to overpressure protection mechanism and maintains vertical pulling force that can then disappear, overpressure protection mechanism to
The horizontal thrust that forward closing organ applies can also disappear, and forward closing organ can then be connect with the inner wall sealing of main valve body, be made
Obtaining the combustion gas in gas storage equipment can not go successively to occur by main valve body (gas self-closing valve) pipeline of superpressure phenomenon, and combustion gas is certainly
Valve closing realization is automatically closed, and the combustion gas for avoiding pipeline that superpressure phenomenon occurs and gas storage equipment being caused to store leaks, and improves combustion
Gas uses the safety of process.
It should be noted that diaphragm can be rubber material be made and with high ductility laminated structure, work as combustion gas
When self-closing valve is not opened, the air pressure in gas self-closing valve is equal with external air pressure, and the present level that diaphragm is heaved is 0,
When pressure i.e. in gas self-closing valve is equal with external air pressure, diaphragm state in which can be confirmed as diaphragm and not rouse
It rises.
Gas self-closing valve is controlled to open gas self-closing valve for the convenience of the user so that the combustion gas of gas storage equipment storage
Pipeline can be entered by the gas self-closing valve of unlatching and be transmitted to gas equipment, referring to FIG. 2, in one embodiment of the invention,
The gas self-closing valve further comprises：Support upper cover 501, pull-button 502, T shapes pull rod 503, spring pocket 504 and return spring
505；Wherein,
The support upper cover 501 is mounted on the main valve body 10, is located at the upside of the diaphragm 40；
The spring pocket 504 includes a pipe and a positioning plate；
The return spring 505 is socketed on the pipe, the first end of the return spring 505 and the positioning plate phase
Even, 505 second end of the return spring is connected with the lower wall of the support upper cover 501；
The positioning plate and the return spring 505 are located at the downside of the support upper cover 501；
The first end of the pipe is connected with the positioning plate, and the second end of the pipe is by the support upper cover 501
Downside passes through the through-hole of the support upper cover 501 to the upside of the support upper cover 501, the second end of the pipe and the drawing
Button 502 is connected；
The bar portion of the T shapes pull rod 503 is connected through the pull-button 502, the pipe and with the diaphragm 40；
The impulse stroke of the return spring 505 is not more than the setting height；
The pull-button 502 can be moved towards the upside of the support upper cover 501 under external force, to drive the T shapes
The upside of pull rod 503 towards the support upper cover 501 moves, and makes the support upper cover 501 and the positioning plate to socket
The return spring 505 on the pipe is compressed；When acting on the external force disappearance of the pull-button 502, pressed
The return spring 505 of contracting is resetted to be resetted with the downside for driving the pull-button 502 towards the support upper cover 501
Movement；
The diaphragm 40 can be driven towards described towards the T shapes pull rod 503 of the upside movement of the support upper cover 501
It heaves the upside of diaphragm 40.
In above-described embodiment, user can be acted on pull-button by external force and make upside movement of the pull-button towards support upper cover,
The pull-button of movement can drive the upside movement of T shapes pull rods towards support upper cover, and T shapes pull rod then can be with dynamic diaphragm towards the upper of diaphragm
It heaves side so that diaphragm with it to keeping the overpressure protection mechanism connecting to apply and maintain vertical pulling force, and overpressure protection mechanism is then
Can according to the vertical pulling force being subject to forward closing organ apply and maintenance level thrust so that forward closing organ by
To when the horizontal thrust and the inner wall of main valve body formed air gap, realization open gas self-closing valve under control of the user.
In above-described embodiment, when gas self-closing valve is not opened, the pressure inside gas valve and external atmospheric pressure phase
Deng, diaphragm will not be heaved, i.e., the height that diaphragm is heaved at this moment be 0；The impulse stroke of return spring is high no more than setting
Degree, that is, when supporting upper cover and positioning plate to compress the return spring being socketed on pipe, the maximum compression stroke of spring is not
Distance more than setting height, i.e. pull-button driving T shapes pull rod towards the movement outside of upper cover is not more than setting height, in this way,
When user acts on pull-button to open gas self-closing valve by external force, diaphragm is in the opening process of gas self-closing valve, T shape pull rods
Setting height will not be more than towards the present level heaved on the upside of diaphragm with dynamic diaphragm, to avoid diaphragm in opening process
The present level heaved causes gas self-closing valve to be automatically closed again more than setting height.
In above-described embodiment, the bar portion of T shape pull rods is connected through pull-button, pipe and with diaphragm so that combustion gas acts on film
When the pressure of piece is excessive, diaphragm can push T-type pull rod to continue the upside towards support upper cover in the pipe and pull-button of spring pocket
Movement, it is ensured that combustion gas act on diaphragm pressure it is excessive when, diaphragm can be heaved towards more big height is heaved on the outside of diaphragm
Present level will not be limited by the position of pull-button and support upper cover.
Referring to FIG. 2, in one embodiment of the invention, further include：Flat head screw 601, nut 602 and gasket 603；
The upside of the diaphragm 40 is provided with and 40 integrally formed ring-type tabletting 401 of the diaphragm；
The screw rod of the flat head screw 601 is fixedly connected with the bar portion of the T shapes pull rod 503；
The head of the flat head screw 601 is wrapped in the cyclic annular tabletting 401；
The gasket 603 and nut 602 are mounted on the screw rod of the flat head screw 601；
Pretightning force between the nut 602 and the flat head screw 601 can make the gasket 603 and the flat head screw
601 pairs of cyclic annular tablettings 401 compress, to be fixedly connected to the diaphragm 40 and the flat head screw 601.
It is provided in above-described embodiment, on the upside of diaphragm and the integrally formed cyclic annular tabletting of diaphragm, the head of flat head screw
It is wrapped in cyclic annular tabletting, and the screw rod of flat head screw is fixedly connected with the bar portion of T shape pull rods, by installing gasket and nut
On the screw rod of flat head screw, the pretightning force between nut and flat head screw can then make gasket and flat head screw to cyclic annular tabletting into
Row compresses, and realization is when being fixedly connected diaphragm and flat head screw, between the head and diaphragm of flat head screw it is corresponding by
Power area is relatively large, is not easy to cause to pierce through risk to diaphragm, causes combustion gas to leak to prevent diaphragm to be pierced.
In order to realize that overpressure protection mechanism can be protected with diaphragm when the present level that matrix is heaved is not more than setting height
Connection is held, and the vertical pulling force for applying and maintaining to it according to diaphragm applies to forward closing organ and maintenance level thrust, with
And realize that, when the present level that matrix is heaved is more than setting height, overpressure protection mechanism can be detached with diaphragm to stop to suitable
Apply horizontal thrust to closing organ, referring to FIG. 2, in one embodiment of the invention, the overpressure protection mechanism 30, including：
Positioning pin 301, bending lever 302, guide groove 303, guide rod 304 and stress magnet 305；Wherein,
The guide groove 303 is mounted on 10 in the main valve body；
The stress magnet 305 is mounted on the first end of the guide rod 304；
The second end of the guide rod 304 is inserted into the guide groove 303；
The fulcrum of the bending lever 302 is connected by the positioning pin 301 with the main valve body 10；
It is provided with location hole on the guide rod 304；
The first end of the bending lever 302 passes through the location hole；
The present level that the diaphragm 40 is heaved be not more than the setting height when, the head of the flat head screw 601 with
The magnetic attraction formed between the stress magnet 305 makes the diaphragm 40 keep connecting with the stress magnet 305；It heaves
The diaphragm 40 applies to the stress magnet 305 according to the magnetic and maintains vertical pulling force, drives the stress magnet 305
And the guide rod 304 so that the guide rod 304 moves in the guide groove 303 towards the diaphragm 40 described current
Highly；
The guide rod 304 of present level is moved towards the diaphragm 40 can drive the bending lever 302 around described
Positioning pin 301 rotates in the forward direction so that the second end of the bending lever 302 is by the gas outlet 102 towards the air inlet
The direction movement of mouth 101 applies simultaneously maintenance level thrust to the forward closing organ 20；
The bending lever 302 is when the stress magnet 305 is detached with the diaphragm 40, to the forward closing organ
20 horizontal thrusts applied disappear, and can be reversely rotated around the positioning pin 301 so that the bending lever 302
Second end is moved by the direction of the air inlet 101 towards the gas outlet 102；
When the stress magnet 305 is detached with the diaphragm 40, the guide rod 304 can in the guide groove 303 court
It is moved to the direction far from the diaphragm 40；
When the diaphragm 40 heaves the object height under the pressure effect of combustion gas towards the upside of the diaphragm 40, combustion
The pressure effect of gas overcomes the magnetic attraction formed between the stress magnet 305 and the head of the flat head screw 601,
So that the stress magnet 305 is detached with the diaphragm 40.
Specifically, referring to FIG. 2, in one embodiment of the invention, the overpressure protection mechanism 30 further includes：Position magnetic
Iron 305；Wherein,
The phase magnet 305 is mounted on the inner wall of the main valve body 10；
The location hole camber structure；
On the bending lever 302 with the adjacent arc-shaped structure in region of the bending first end of lever and can be described
It stretches in location hole；
When the stress magnet 305 is detached with the diaphragm 40, the phase magnet 306 and the bending lever 302
First end between the magnetic attraction that is formed the bending lever 302 can be driven to be reversely rotated around the positioning pin 301 so that
The first end of the bending lever 302 moves towards the phase magnet 306 and is connected with the phase magnet 306, is described curved
The second end for rolling over lever 302 is moved by the direction of the air inlet 101 towards the gas outlet 102, and makes the guiding
Bar 304 is directed away from the direction movement of the diaphragm 40 in the guide groove 303；
The guide rod 304 of the direction movement of the diaphragm 40 is directed away from the guide groove 303 can drive institute
Stress magnet 305 is stated to move towards the guide groove 303.
In above-described embodiment, phase magnet is mounted on the inner wall of main valve body, location hole camber structure, is bent on lever
With the adjacent arc-shaped structure in region of the bending first end of lever and can stretch in location hole, then, when stress magnet and film
When piece detaches, the magnetic attraction formed between phase magnet and the first end for bending lever can then drive bending lever to be sent out around positioning pin
Raw to reversely rotate, the first end for bending lever moves towards phase magnet and is connected with phase magnet；So, on the one hand, reversed
The bending lever of rotation, second end are moved by the direction of air inlet towards gas outlet, that is, bending the second end of lever can realize
Resetting movement avoids the location of the second end of bending lever from interfering the working condition of forward closing organ, it is ensured that
Forward closing organ can be connect with the inner wall sealing of main valve body；On the other hand, with guide groove, positioning pin and main valve mates
It is defined with the relative position to bending lever and guide rod, bending lever and guide rod is avoided arbitrarily to be swung in main valve body
And send out abnormal sound.
In order to realize when forward closing organ is in the horizontal thrust for being applied and maintaining by overpressure protection mechanism, forward close
Air gap can be formed between main valve body by closing mechanism, and when horizontal thrust disappearance of the realization suffered by forward closing organ, suitable
It can be tightly connected between closing organ and the inner wall of main valve body, referring to FIG. 2, in one embodiment of the invention, it is described suitable
To closing organ 20, including：Locating piece 201, compression spring 202, pole shutoff 203 and seal washer 204；Wherein,
The locating piece 201 is fixedly connected with the inner wall of the main valve body 10；
The first end of the compression spring 202 is fixedly connected with the locating piece 201, and the second of the compression spring 202
End is fixedly connected with the first end of the pole shutoff 203；
The seal washer 204 is arranged on the pole shutoff 203；
When the second end of the bending lever 302 is moved by the gas outlet 102 towards the direction of the air inlet 101,
The second end of the bending lever 302 applies to the second end of the pole shutoff 203 and maintenance level thrust；The bending lever
When 302 second end is moved by the direction of the air inlet 101 towards the gas outlet 102, the second of the bending lever 302
The horizontal thrust applied to the second end of the pole shutoff 203 is held to disappear；
The pole shutoff 203 is under the action of the horizontal thrust by the gas outlet 102 towards the air inlet 101
Direction moves so that forms air gap between the pole shutoff 203 and the inner wall of the main valve body 10, and compresses the compression spring
202；When the horizontal thrust disappears, the compressed compression spring 202 resets the pole shutoff 203, drives the pass
It closes bar 203 to be moved by the direction of the air inlet 101 towards the gas outlet 102 so that the seal washer 204 is to the pass
The air gap formed between bar 203 and the inner wall of the main valve body 10 is closed to be sealed.
In order to realize pole shutoff by overpressure protection mechanism to the horizontal thrust that it applies and by gas outlet towards air inlet
After mouth movement, pole shutoff can form air gap between the inner wall of main valve body, and realize that the level suffered by pole shutoff pushes away
After power hour, after being moved towards gas outlet by air inlet under the pressure effect of spring, can preferably it realize to pole shutoff
The air gap formed between the inner wall of main valve body is sealed, the shape corresponding to the interior region adjacent with air inlet of main valve body
And structure should at least meet it is one or more in following condition.
Condition 1, the inside of the main valve body 10 region adjacent with the air inlet 101 are in truncated cone-shaped cavity structure.
Condition 2,10 inside of the main valve body region adjacent with the air inlet 101 are provided with circular protrusion.
It is directed to condition 1, when pole shutoff is moved by gas outlet towards the direction of air inlet under the action of horizontal thrust, by
Successively decreased towards gas outlet by air inlet in the internal diameter of truncated cone-shaped cavity structure, can then be formed between pole shutoff and the inner wall of main valve body
Air gap, and compressible compression spring in motion process；When horizontal thrust disappears, compressed compression spring resets pole shutoff,
Pole shutoff is driven to be moved by the direction of air inlet towards gas outlet, since the internal diameter of truncated cone-shaped cavity structure is gone out by air inlet direction
Gas port successively decreases, and the inner wall corresponding to truncated cone-shaped cavity structure can be then interacted with pole shutoff to squeeze seal washer,
So that the air gap that seal washer is formed between the inner wall corresponding to pole shutoff and truncated cone-shaped cavity structure is sealed.
Being directed to condition 2 can when pole shutoff is moved by gas outlet towards the direction of air inlet under the action of horizontal thrust
So that seal washer is detached with circular protrusion, forms air gap between pole shutoff and the inner wall of main valve body, and can be pressed in motion process
Compression pressure spring；When horizontal thrust disappears, compressed compression spring resets pole shutoff, and driving pole shutoff is by air inlet direction
The direction of gas outlet moves, and circular protrusion can then interact with pole shutoff to squeeze seal washer, so that
The air gap that seal washer is formed between pole shutoff and the inner wall of main valve body is sealed.
In gas self-closing valve provided in an embodiment of the present invention, referring to FIG. 2, can specifically pass through the following two kinds realization method
In any one or more, it is ensured that diaphragm and guide rod when diaphragm is more than setting height towards its present level for heaving of outside
Separation, that is, ensure diaphragm and overpressure protection organizational separation.
Mode 1：It leads and is respectively set on two mutual corresponding side walls of guide groove 303 there are one limit hole, bend lever
302 first end interval passes through a location hole of two limit holes and guide rod, when the height that diaphragm 40 is heaved is 0, bending
The first end of lever 302 is connected with phase magnet 306, and bends the first end of lever 302 when being connected with phase magnet 306, curved
Folding lever 302 is contacted with the lower edge of two limit holes；Diaphragm 40 is according to the head of stress magnet 305 and flat head screw 601
Between the magnetic attraction that is formed apply to stress magnet 305 and maintain vertical pulling force, and with dynamic stress magnet 305 and the guide rod
304 towards diaphragm 40 move setting height when, bending lever 302 contacted with the upper edge of two limit holes.
Realization method 2, when the present level that diaphragm 40 is heaved is setting height, compression spring 202 is compressed to limited compression
State.
It is directed to above-mentioned realization method 1, i.e., by the way that limit hole is respectively set in the two side walls to guide groove, and is limited
The distance between the upper edge and lower edge in hole are equal to setting height, can be in guide groove towards diaphragm to limit guide rod
The maximum height of upside movement is setting height, i.e., being formed by magnetic attraction between the head of flat head screw and profit magnet makes
The first end of guide rod with keep connection and drive guide rod towards diaphragm outside when, be only capable of driving guide rod towards diaphragm
Upside moves setting height, when diaphragm is continued to heave towards on the upside of diaphragm by the high pressure effect of combustion gas, the height of combustion gas
Pressure effect can overcome the magnetic attraction formed between the head of flat head screw and stress magnet and make the of diaphragm and guide rod
One end detaches.It is subsequent, magnetic attraction is formed by by guide rod direction can be made between phase magnet and the first end for bending lever
It is moved in guide groove and its position is defined.
It is directed to above-mentioned realization method 2, when the present level that diaphragm is heaved is setting height, compression spring is compressed to the limit
Squeezed state；After spring-compressed can not continue compression to limited compression state, bending the second end of lever can not continue by outlet
Mouthful towards air inlet move so that guide rod can not continue the movement outside towards diaphragm under the drive of diaphragm, when diaphragm by
When high pressure to combustion gas acts on and continues to heave towards on the upside of diaphragm, the high pressure effect of combustion gas can overcome the head of flat head screw
The magnetic attraction that is formed between portion and stress magnet and diaphragm is detached with the first end of guide rod.
Referring to FIG. 2, in one embodiment of the invention, further include：Current-limiting apparatus；Wherein, the current-limiting apparatus includes：Ring
Shape closes seat 701, sheet closes lid 702 and at least one rubber balances muscle 703；Wherein,
The cyclic annular outside wall surface gap-free sealed company of internal face corresponding with 101 place of the air inlet for closing seat 701
It connects；
The first end of the rubber balance muscle 703 is connected with the cyclic annular seat 701 of closing, the rubber balance muscle 703
Second end closes lid 702 with the sheet and is connected；
The cyclic annular internal diameter for closing seat 701 is less than the diameter that the sheet closes lid 702；
The difference between the pressure inside pressure and the main valve body 10 inside the gas storage equipment, can overcome the rubber
Glue balances muscle 703 and closes lid 702 and the cyclic annular support force for closing seat 701 to the sheet to drive the sheet to close lid
702 move towards the cyclic annular seat 701 of closing, and move distance and the difference proportional.
In above-described embodiment, current-limiting apparatus closes seat by ring-type, sheet closes lid and at least one rubber balance muscle is constituted,
Ring-type close seat the outside wall surface gap-free sealed connection of internal face corresponding with air inlet place, rubber balance muscle first end and
Ring-type closes seat and is connected, and the second end of rubber balance muscle closes lid with sheet and is connected, and the internal diameter that ring-type closes seat is closed less than sheet
Close the diameter of lid；When channel interior air pressure is smaller, the difference in gas storage equipment in air pressure and main valve body between air pressure is relatively
Greatly, since rubber balances, muscle closes lid to sheet and the cyclic annular support force size for closing seat is limited, and rubber balance muscle can be
Therefore the lower bending of high pressure effect when the difference in gas storage equipment in air pressure and main valve body between air pressure is relatively large, then can overcome
Rubber balances muscle and closes seat movement to sheet closing lid and the cyclic annular support force for closing seat to drive sheet to close to cover towards cyclic annular,
So that being reduced by the gap that sheet is closed between lid and cyclic annular closing seat, closed with ring-type so that closing lid by sheet
The flow major key that gap between seat enters the combustion gas of main valve body reduces, and when to prevent channel interior pressure too small, gas storage is set
The combustion gas of standby interior storage occurs over-current phenomenon avoidance and is largely exported quickly and by pipeline.
The larger solid particle of grain size enters gas self-closing valve and is damaged to gas self-closing valve in order to prevent, its into
Corresponding filter screen can be also set at gas port and gas outlet.
In conclusion each embodiment of the present invention at least has the advantages that：
1, in one embodiment of the invention, the gas self-closing valve is by main valve body, forward closing organ, overpressure protection mechanism and film
Piece is constituted, and the air inlet of main valve body can be fixedly connected with the air supply opening of gas storage equipment, the gas outlet of main valve body can by pipeline with
Gas equipment is connected, and diaphragm is mounted on the opening of main valve body and is sealed to opening, if in use, with the gas self-closing valve
Superpressure phenomenon is not occurred in connected pipeline, the pressure for acting on diaphragm of combustion gas is then relatively small in main valve body, and diaphragm is smaller
Pressure effect under towards the present level heaved on the upside of diaphragm be not more than setting height, diaphragm then can be with overpressure protection mechanism
It keeps connecting and applies and maintain vertical pulling force, overpressure protection mechanism can then apply to forward closing organ to overpressure protection mechanism
And maintenance level thrust, so that forward the inner wall of closing organ and main valve body forms air gap, it is ensured that storage in gas storage equipment
Combustion gas can continue into pipeline by air inlet, air gap, gas outlet；If occurring in the pipeline being connected with the gas self-closing valve
Superpressure phenomenon, in main valve body combustion gas act on diaphragm pressure it is then very high, diaphragm can then continue under high pressure effect towards film
It is heaved on the upside of piece, the present level that diaphragm is heaved reaches the object height not less than setting height so that overpressure protection mechanism
Detached with diaphragm, after separation, diaphragm applies to overpressure protection mechanism and maintains vertical pulling force that can then disappear, overpressure protection mechanism to
The horizontal thrust that forward closing organ applies can also disappear, and forward closing organ can then be connect with the inner wall sealing of main valve body, be made
Obtaining the combustion gas in gas storage equipment can not go successively to occur by main valve body (gas self-closing valve) pipeline of superpressure phenomenon, and combustion gas is certainly
Valve closing realization is automatically closed, and the combustion gas for avoiding pipeline that superpressure phenomenon occurs and gas storage equipment being caused to store leaks, and improves combustion
Gas uses the safety of process.
2, in one embodiment of the invention, user can act on the upside that pull-button makes pull-button towards support upper cover by external force
Movement, the pull-button of movement can drive upside movement of the T shapes pull rod towards support upper cover, and T shapes pull rod then can be with dynamic diaphragm towards film
It is heaved on the upside of piece so that diaphragm with it to keeping the overpressure protection mechanism connecting to apply and maintain vertical pulling force, overpressure protection
Mechanism can then be applied to forward closing organ according to the vertical pulling force being subject to and maintenance level thrust, so that forward closing machine
Structure is when by the horizontal thrust and the inner wall of main valve body forms air gap, and gas self-closing is opened in realization under control of the user
Valve.
3, in one embodiment of the invention, when gas self-closing valve is not opened, the pressure inside gas valve and external air
Pressure is equal, and diaphragm will not be heaved, i.e., the height that diaphragm is heaved at this moment is 0；The impulse stroke of return spring is not more than
Setting height, that is, when supporting upper cover and positioning plate to compress the return spring being socketed on pipe, the maximum compression of spring
Stroke is not more than setting height, i.e. the distance of pull-button driving T shapes pull rod towards the movement outside of upper cover is not more than setting height,
In this way, when user acts on pull-button to open gas self-closing valve by external force, diaphragm is in the opening process of gas self-closing valve, T
Shape pull rod will not be more than setting height with dynamic diaphragm towards the present level heaved on the upside of diaphragm, to avoid opening process
The present level that middle diaphragm is heaved causes gas self-closing valve to be automatically closed again more than setting height.
4, in one embodiment of the invention, the bar portion of T shape pull rods is connected through pull-button, pipe and with diaphragm so that combustion gas is made
When pressure for diaphragm is excessive, diaphragm can push T-type pull rod to continue in the pipe and pull-button of spring pocket towards support upper cover
Upside movement, it is ensured that combustion gas act on diaphragm pressure it is excessive when, diaphragm can towards heaving more big height on the outside of diaphragm,
The present level heaved will not be limited by the position of pull-button and support upper cover.
5, it is provided in one embodiment of the invention, on the upside of diaphragm and the integrally formed cyclic annular tabletting of diaphragm, flat head screw
Head be wrapped in cyclic annular tabletting, and the screw rod of flat head screw is fixedly connected with the bar portion of T shape pull rods, by by gasket and spiral shell
Mother is mounted on the screw rod of flat head screw, and the pretightning force between nut and flat head screw can then make gasket with flat head screw to ring-type
Tabletting is compressed, and when realization is fixedly connected diaphragm and flat head screw, institute is right between the head and diaphragm of flat head screw
The forced area answered is relatively large, is not easy to cause to pierce through risk to diaphragm, leads to combustion gas to prevent diaphragm to be pierced
Leakage.
6, in one embodiment of the invention, phase magnet is mounted on the inner wall of main valve body, location hole camber structure, bending
On lever with the adjacent arc-shaped structure in region of the bending first end of lever and can stretch in location hole, then, when stress magnetic
When iron is detached with diaphragm, the magnetic attraction formed between phase magnet and the first end for bending lever can then drive bending lever around fixed
Position pin reversely rotates, and the first end for bending lever moves towards phase magnet and is connected with phase magnet；In this way, a side
Face, the bending lever of reverse rotation, second end are moved by the direction of air inlet towards gas outlet, that is, bend the second end of lever
Resetting movement can be achieved, the location of the second end of bending lever is avoided to cause to do to the working condition of forward closing organ
It disturbs, it is ensured that forward closing organ can be connect with the inner wall sealing of main valve body；On the other hand, with guide groove, positioning pin and main valve
Mates are defined with the relative position to bending lever and guide rod, avoid bending lever and guide rod in main valve body
It arbitrarily swings and sends out abnormal sound.
7, in one embodiment of the invention, the outside wall surface internal face gapless corresponding with air inlet place that ring-type closes seat is close
Envelope connection, the first end of rubber balance muscle close seat with ring-type and are connected, and the second end of rubber balance muscle closes lid with sheet and is connected,
The internal diameter that ring-type closes seat is less than the diameter that sheet closes lid；When channel interior air pressure is smaller, air pressure and master in gas storage equipment
Difference in valve body between air pressure is relatively large, and since rubber balances, muscle closes lid to sheet and the cyclic annular support force for closing seat is big
It is small limited, and rubber balance muscle can be bent under high pressure effect, therefore, in gas storage equipment in air pressure and main valve body between air pressure
Difference it is then relatively large when, then rubber balance muscle can be overcome to close lid and the cyclic annular support force for closing seat to sheet to drive piece
Shape closes lid and closes seat movement towards cyclic annular so that and lid is closed by sheet and the cyclic annular gap closed between seat reduces, to
So that the flow major key for the combustion gas for entering main valve body by the gap that sheet is closed between lid and cyclic annular closing seat reduces, to anti-
When only channel interior pressure is too small, over-current phenomenon avoidance occurs for the combustion gas stored in gas storage equipment and quickly and largely defeated by pipeline
Go out.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Or operation is distinguished with another entity or operation, is existed without necessarily requiring or implying between these entities or operation
Any actual relationship or order.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-
It is exclusive to include, so that the process, method, article or equipment including a series of elements includes not only those elements,
But also include other elements that are not explicitly listed, or further include solid by this process, method, article or equipment
Some elements.In the absence of more restrictions, the element limited by sentence " including one ", is not arranged
Except there is also other identical factors in the process, method, article or apparatus that includes the element.
Finally, it should be noted that：The foregoing is merely presently preferred embodiments of the present invention, is merely to illustrate the skill of the present invention
Art scheme, is not intended to limit the scope of the present invention.Any modification for being made all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (10)
1. a kind of gas self-closing valve, which is characterized in that including：
Main valve body, forward closing organ, overpressure protection mechanism and diaphragm；Wherein,
The air inlet of the main valve body is connect with gas storage equipment, and the gas outlet of the main valve body passes through pipeline and gas equipment phase
Even；
The forward closing organ is mounted on region adjacent with the air inlet in the main valve body；
Opening is provided on the main valve body, the diaphragm is mounted on the opening and is sealed to the opening；
The overpressure protection mechanism is mounted in the main valve body, and positioned at the downside of the diaphragm；
The diaphragm can be under the effect of the pressure of combustion gas towards heaving on the upside of the diaphragm；
When the present level that the diaphragm is heaved is not more than the setting height, the diaphragm can be protected with the overpressure protection mechanism
Connection is held, and applies to the overpressure protection mechanism and maintains vertical pulling force；When superpressure phenomenon occurring in the pipeline, the film
Piece can be under the effect of the pressure of combustion gas towards heaving object height on the upside of the diaphragm so that the overpressure protection mechanism and institute
Diaphragm separation is stated, the object height is more than the setting height；
When the overpressure protection mechanism is by the vertical pulling force, it can apply to the forward closing organ and maintenance level pushes away
Power；When the overpressure protection mechanism is detached with the diaphragm, the horizontal thrust disappears；
The forward closing organ can form air gap so that institute when by the horizontal thrust with the inner wall of the main valve body
It states the combustion gas stored in gas storage equipment and the pipeline is entered by the air inlet, the air gap, the gas outlet；In the water
When flat-pushing power disappears, the forward closing organ is connect with the inner wall sealing of the main valve body.
2. gas self-closing valve according to claim 1, which is characterized in that
Further comprise：Support upper cover, pull-button, T shapes pull rod, spring pocket and return spring；Wherein,
The support upper cover is mounted on the main valve body, is located at the upside of the diaphragm；
The spring pocket includes a pipe and a positioning plate；
The return spring is socketed on the pipe, and the first end of the return spring is connected with the positioning plate, described time
Position spring second end is connected with the lower wall of the support upper cover；
The positioning plate and the return spring are located at the downside of the support upper cover；
The first end of the pipe is connected with the positioning plate, and the second end of the pipe is passed through by the downside of the support upper cover
The through-hole of the support upper cover to the upside of the support upper cover, the second end of the pipe is connected with the pull-button；
The bar portion of the T shapes pull rod is connected through the pull-button, the pipe and with the diaphragm；
The impulse stroke of the return spring is not more than the setting height；
The pull-button can be moved towards the upside of the support upper cover under external force, to drive the T shapes pull rod towards institute
The upside movement of support upper cover is stated, and makes the support upper cover and the positioning plate to described in being socketed on the pipe times
Position spring is compressed；Act on the pull-button the external force disappear when, the compressed return spring resetted with
The downside for driving the pull-button towards the support upper cover carries out resetting movement；
The diaphragm can be driven to be roused towards the upside of the diaphragm towards the T shapes pull rod of the upside movement of the support upper cover
It rises.
3. gas self-closing valve according to claim 2, which is characterized in that
Further include：Flat head screw, nut and gasket；
It is provided on the upside of the diaphragm and the integrally formed cyclic annular tabletting of the diaphragm；
The screw rod of the flat head screw is fixedly connected with the bar portion of the T shapes pull rod；
The head of the flat head screw is wrapped in the cyclic annular tabletting；
The gasket and nut are mounted on the screw rod of the flat head screw；
Pretightning force between nut and the flat head screw, can make the gasket and the flat head screw to the cyclic annular tabletting into
Row compresses, to be fixedly connected to the diaphragm and the flat head screw.
4. gas self-closing valve according to claim 3, which is characterized in that
The overpressure protection mechanism, including：Positioning pin, bending lever, guide groove, guide rod and stress magnet；Wherein,
The guide groove is mounted in the main valve body；
The stress magnet is mounted on the first end of the guide rod；
The second end of the guide rod is inserted into the guide groove；
The fulcrum of the bending lever is connected by the positioning pin with the main valve body；
It is provided with location hole on the guide rod；
The first end of the bending lever passes through the location hole；
When the present level that the diaphragm is heaved is not more than the setting height, the head of the flat head screw and the stress magnetic
The magnetic attraction formed between iron makes the diaphragm keep connecting with the stress magnet；The diaphragm heaved is according to the magnetic
It is drawn to the stress magnet and applies and maintain vertical pulling force, drive the stress magnet and the guide rod so that the guiding
Bar is in the guide groove towards present level described in the motion of membrane；
The bending lever can be driven to occur just around the positioning pin towards the guide rod of the motion of membrane present level
To rotation so that the second end of the bending lever is moved by the gas outlet towards the direction of the air inlet, to described suitable
Apply simultaneously maintenance level thrust to closing organ；
The bending lever is when the stress magnet is detached with the diaphragm, to the water of forward closing organ application
Flat-pushing power disappears, and can be reversely rotated around the positioning pin so that the second end of the bending lever is by the air inlet court
It is moved to the direction of the gas outlet；
When the stress magnet is detached with the diaphragm, the guide rod can be directed away from the diaphragm in the guide groove
Direction moves；
The diaphragm under the pressure effect of combustion gas towards when heaving the object height on the upside of the diaphragm, the pressure of combustion gas
Effect overcomes the magnetic attraction formed between the stress magnet and the head of the flat head screw so that the stress magnetic
Iron is detached with the diaphragm.
5. gas self-closing valve according to claim 4, which is characterized in that
The overpressure protection mechanism further includes：Phase magnet；Wherein,
The phase magnet is mounted on the inner wall of the main valve body；
The location hole camber structure；
On the bending lever with the adjacent arc-shaped structure in region of the bending first end of lever and can be in the location hole
In stretch；
When the stress magnet is detached with the diaphragm, formed between the phase magnet and the first end of the bending lever
Magnetic attraction the bending lever can be driven to be reversely rotated around the positioning pin so that it is described bending lever first end court
Move to the phase magnet and be connected with the phase magnet, the second end of the bending lever by the air inlet towards institute
The direction movement of gas outlet is stated, and the guide rod is made to be directed away from the direction fortune of the diaphragm in the guide groove
It is dynamic；
The guide rod of the direction movement of the diaphragm is directed away from the guide groove can drive stress magnet court
It is moved to the guide groove.
6. gas self-closing valve according to claim 5, which is characterized in that
Limit hole there are one being respectively set on two mutual corresponding side walls of the guide groove；
The first end interval of the bending lever passes through two limit holes and a location hole；
When the height that the diaphragm is heaved is 0, the first end of the bending lever is connected with the phase magnet；
When the first end of the bending lever is connected with the phase magnet, under the bending lever and two limit holes
Edge contacts；
The diaphragm is according to the magnetic attraction formed between the stress magnet and the head of the flat head screw to the stress magnetic
Iron applies and maintains vertical pulling force, and drive the stress magnet and the guide rod towards described in the motion of membrane setting away from
From when, the bending lever is contacted with the upper edge of two limit holes.
7. gas self-closing valve according to claim 4, which is characterized in that
The forward closing organ, including：Locating piece, compression spring, pole shutoff and seal washer；Wherein,
The locating piece is fixedly connected with the inner wall of the main valve body；
The first end of the compression spring is fixedly connected with the locating piece, the second end of the compression spring and the pole shutoff
First end be fixedly connected；
The seal washer is arranged on the pole shutoff；
When the second end of the bending lever is moved by the gas outlet towards the direction of the air inlet, the bending lever
Second end applies to the second end of the pole shutoff and maintenance level thrust；The second end of the bending lever is by the air inlet
When being moved towards the direction of the gas outlet, the second end of the bending lever is to described in the application of the second end of the pole shutoff
Horizontal thrust disappears；
The pole shutoff is moved by the gas outlet towards the direction of the air inlet under the action of horizontal thrust so that
Air gap is formed between the pole shutoff and the inner wall of the main valve body, and compresses the compression spring；The pole shutoff is described
When horizontal thrust disappears, the compressed compression spring resets, and the pole shutoff is driven to be gone out described in by the air inlet
The direction of gas port moves so that the air gap that the seal washer is formed between the pole shutoff and the inner wall of the main valve body into
Row sealing.
8. gas self-closing valve according to claim 7, which is characterized in that
When the present level that the diaphragm is heaved is the setting height, the compression spring is compressed to limited compression state.
9. gas self-closing valve according to claim 7, which is characterized in that
The inside of the main valve body region adjacent with the air inlet is in truncated cone-shaped cavity structure；
The pole shutoff is moved by the gas outlet towards the direction of the air inlet under the action of horizontal thrust so that
Air gap is formed between inner wall corresponding to the pole shutoff and the truncated cone-shaped cavity structure, and compresses the compression spring；Institute
When stating horizontal thrust disappearance, the compressed compression spring resets, and drives the pole shutoff by the air inlet described in
The direction of gas outlet moves so that the seal washer is to the inner wall corresponding to the pole shutoff and the truncated cone-shaped cavity structure
Between the air gap that is formed be sealed；
Or,
The region adjacent with the air inlet is provided with circular protrusion inside the main valve body；
The pole shutoff is moved by the gas outlet towards the direction of the air inlet under the action of horizontal thrust so that
The seal washer is detached with the circular protrusion, to form gas between the pole shutoff and the inner wall of the main valve body
Gap, and compress the compression spring；For the pole shutoff when the horizontal thrust disappears, the compressed compression spring is multiple
Position, drive the pole shutoff by the air inlet towards the gas outlet direction move so that the seal washer with it is described
Circular protrusion intimate contact, is sealed with the air gap formed between the pole shutoff and the inner wall of the main valve body.
10. according to any gas self-closing valve in claim 1 to 9, which is characterized in that
Further include：Current-limiting apparatus；Wherein,
The current-limiting apparatus includes：Ring-type closes seat, sheet closes lid and at least one rubber balances muscle；Wherein,
The cyclic annular gap-free sealed connection of outside wall surface internal face corresponding with the air inlet place for closing seat；
The first end of rubber balance muscle is connected with the cyclic annular seat of closing, the rubber balance muscle second end and described
Shape closes lid and is connected；
The cyclic annular internal diameter for closing seat is less than the diameter that the sheet closes lid；
The difference between the pressure inside pressure and the main valve body inside the gas storage equipment can overcome the rubber to balance
Muscle closes lid to the sheet and the ring-type closes the support force of seat to drive the sheet to close lid towards the cyclic annular pass
Close seat movement, and move distance and the difference proportional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580686.4A CN108708998B (en) | 2018-06-07 | 2018-06-07 | Gas self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580686.4A CN108708998B (en) | 2018-06-07 | 2018-06-07 | Gas self-closing valve |
Publications (2)
| Publication Number | Publication Date |
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| CN108708998A true CN108708998A (en) | 2018-10-26 |
| CN108708998B CN108708998B (en) | 2020-05-05 |
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| CN201810580686.4A Active CN108708998B (en) | 2018-06-07 | 2018-06-07 | Gas self-closing valve |
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|---|---|---|---|---|
| US1686965A (en) * | 1925-10-03 | 1928-10-09 | Baker Perkins Co Inc | Safety device for gas-firing systems |
| CN102155561A (en) * | 2011-04-07 | 2011-08-17 | 张珉 | Improved kitchen fuel gas safety valve |
| CN204664517U (en) * | 2015-03-25 | 2015-09-23 | 曾旋 | With the gas self-closing valve of current-limiting apparatus |
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| CN205173595U (en) * | 2015-10-12 | 2016-04-20 | 海南广天恒科技发展有限公司 | Intelligent gas self -closing valve |
| CN206738653U (en) * | 2017-05-09 | 2017-12-12 | 成都特恩达燃气设备有限公司 | A kind of pipe gas self-closing valve |
| CN107940049A (en) * | 2017-11-24 | 2018-04-20 | 海南广天恒科技发展有限公司 | Multifunctional pipe gas stabilized-pressure valve |
-
2018
- 2018-06-07 CN CN201810580686.4A patent/CN108708998B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1686965A (en) * | 1925-10-03 | 1928-10-09 | Baker Perkins Co Inc | Safety device for gas-firing systems |
| CN102155561A (en) * | 2011-04-07 | 2011-08-17 | 张珉 | Improved kitchen fuel gas safety valve |
| CN204664517U (en) * | 2015-03-25 | 2015-09-23 | 曾旋 | With the gas self-closing valve of current-limiting apparatus |
| CN204961941U (en) * | 2015-09-28 | 2016-01-13 | 李仲伦 | Pipeline gas self -closing valve |
| CN205173595U (en) * | 2015-10-12 | 2016-04-20 | 海南广天恒科技发展有限公司 | Intelligent gas self -closing valve |
| CN206738653U (en) * | 2017-05-09 | 2017-12-12 | 成都特恩达燃气设备有限公司 | A kind of pipe gas self-closing valve |
| CN107940049A (en) * | 2017-11-24 | 2018-04-20 | 海南广天恒科技发展有限公司 | Multifunctional pipe gas stabilized-pressure valve |
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| Publication number | Publication date |
|---|---|
| CN108708998B (en) | 2020-05-05 |
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Denomination of invention: A gas self closing valve Effective date of registration: 20211220 Granted publication date: 20200505 Pledgee: Haikou Rural Commercial Bank Co.,Ltd. Donghu sub branch Pledgor: HAINAN WIDELY TIANHENG TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2021980015634 |
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