CN111765276A - Fire-proof and leak-proof emergency closing gas valve - Google Patents

Fire-proof and leak-proof emergency closing gas valve Download PDF

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Publication number
CN111765276A
CN111765276A CN202010692190.3A CN202010692190A CN111765276A CN 111765276 A CN111765276 A CN 111765276A CN 202010692190 A CN202010692190 A CN 202010692190A CN 111765276 A CN111765276 A CN 111765276A
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CN
China
Prior art keywords
locking
cavity
chamber
valve
core
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Withdrawn
Application number
CN202010692190.3A
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Chinese (zh)
Inventor
车强虎
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Fuzhou Wuchuang Lai Technology Co ltd
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Fuzhou Wuchuang Lai Technology Co ltd
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Priority to CN202010692190.3A priority Critical patent/CN111765276A/en
Publication of CN111765276A publication Critical patent/CN111765276A/en
Withdrawn legal-status Critical Current

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    • 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
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • 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
    • F16K21/00—Fluid-delivery valves, e.g. self-closing valves
    • F16K21/04—Self-closing valves, i.e. closing automatically after operation
    • F16K21/06—Self-closing valves, i.e. closing automatically after operation in which the closing movement, either retarded or not, starts immediately after opening

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

Abstract

The invention discloses a fireproof and leakproof emergency closing gas valve which comprises an upper valve seat, wherein the upper valve seat is communicated with the lower valve seat up and down, the lower side of the upper valve seat is fixedly provided with a lower valve seat, the upper valve seat and the lower valve seat can be separated, the upper side of the lower valve seat is provided with an emergency closing cavity with an upward opening, and the inner side wall surface of the upper valve seat is fixedly provided with a flow equalizing cover.

Description

Fire-proof and leak-proof emergency closing gas valve
Technical Field
The invention relates to the technical field of gas equipment, in particular to a fireproof and leak-proof emergency closing gas valve.
Background
In our daily life, can use a large amount of natural gas, the natural gas has also brought some potential safety hazards when bringing convenience for our life, and the process of building of natural gas line is very important, has the emergence of the leakage of natural gas and conflagration among the current potential safety hazard, adopts conventional valve and pipeline to build usually in laying of natural gas line, can not effectively avoid the emergence of incident. The present invention sets forth a device that solves the above problems.
Disclosure of Invention
The technical problem is as follows: the common valve only has the opening and closing functions, and is not helpful for solving emergency accidents because the gas supply cannot be cut off quickly due to the leakage of the gas and the fire condition.
In order to solve the problems, the embodiment designs a fireproof and leakproof emergency closing gas valve, which comprises an upper valve seat, wherein the upper valve seat is vertically communicated, a lower valve seat is fixedly arranged on the lower side of the upper valve seat, the upper valve seat and the lower valve seat can be separated, an emergency closing cavity with an upward opening is arranged on the upper side of the lower valve seat, a flow equalizing cover is fixedly arranged on the inner side wall surface of the upper valve seat, a manual valve core capable of moving up and down is arranged between the inner walls of the flow equalizing cover, a gas outlet cavity is arranged between one side of the flow equalizing cover, which is far away from the circle center of the manual valve core, of the upper valve seat and the upper valve seat, a gas outlet pipe capable of extending into the gas outlet cavity is arranged on the right side of the upper valve seat, a gas inlet cavity is arranged between the lower side of the manual valve core and the lower valve seat, and a, a valve cover is fixedly arranged on the upper side of the upper valve seat, a valve cover gasket is arranged between the valve cover and the upper valve seat, the valve cover gasket has a sealing effect, a manual closing cavity is arranged between the valve cover and the manual valve core, the lower end of the valve cover is provided with a displacement cavity with a downward opening and communicated with the manual closing cavity, the upper wall surface of the displacement cavity is rotatably provided with an inner rod extending to the manual closing cavity, the outer circular surface of the inner rod is connected with an outer rod in a threaded manner, the lower end surface of the outer rod is fixedly connected with the upper end surface of the manual valve core, the lower side of the emergency closing cavity is provided with a locking seat capable of moving up and down, the upper end surface of the locking seat is fixedly provided with a push rod, the upper end surface of the push rod is fixedly provided with an emergency valve core, one side far away from the axis of the push rod is symmetrically provided with a working, lower disk seat upper left side with the lower disk seat upper right side is equipped with respectively and extends to admit air the chamber with the ordinary pressure chamber of going out the air cavity, terminal surface and homonymy under the ordinary pressure chamber secondary locking chamber is kept away from catch bar axle center side end face intercommunication is equipped with power pipeline, secondary locking chamber downside is equipped with first locking chamber, first locking chamber is close to catch bar axle center one side is equipped with and extends to the first locking core in emergency shutdown chamber, first locking core can be right the locking seat carries out the locking, first locking chamber is kept away from locking seat centre of a circle one side is equipped with the direction chamber, emergency shutdown chamber downside is equipped with the rope pulley chamber.
Preferably, the valve gap upside is equipped with can the pivoted and rotates the switch, interior pole upper end is run through wall about the valve gap and with end fixed connection under the rotation switch, the outer pole is kept away from interior pole axle center left side is equipped with the outside guide chute of opening, the fixed slider that extends to of displacement chamber left side lower extreme is led to the inside of spout.
Preferably, a valve core sealing gasket is fixedly arranged between the lower end face of the flow equalizing cover and the upper end face of the upper valve seat, an air guide hole capable of communicating the air outlet cavity with the air inlet cavity is formed in the middle of the flow equalizing cover, and fuel gas in the air inlet cavity can flow into the air outlet cavity through the air guide hole.
Preferably, a deformable membrane is fixedly arranged at the upper end of the normal pressure cavity.
Preferably, the secondary locking chamber is close to catch bar axle center one side is equipped with gliding secondary locking core, the secondary locking core can pass the working chamber extends to the emergency shutdown intracavity, the secondary locking chamber is close to catch bar axle center one side is fixed and is equipped with the secondary sealing washer, the secondary locking core is kept away from catch bar axle center one side is fixed be equipped with the secondary locking chamber forms sealed secondary sealing plate, inside the working chamber the outside disc of secondary locking core bilateral symmetry just fixed reset plate that is equipped with around the disc.
Preferably, bilateral symmetry is equipped with electro-magnet core chamber around the power pipeline, it extends to the homonymy to reset the fixed iron core that moves that is equipped with in board rear end to reset the electro-magnet core intracavity portion, reset the board with the working chamber is kept away from fixed reset spring that is equipped with between catch bar side wall, the fixed coil that is equipped with of wall around the electro-magnet core chamber keeps away from catch bar axle center one end it is two around moving the iron core to be located between the coil, keep away from in the electro-magnet core intracavity catch bar axle center side wall is fixed and is equipped with the fixed iron core, secondary locking chamber rear side is equipped with the thermistor that can induced temperature, the fixed iron core with it is equipped with electromagnetic spring to move between the iron core.
Preferably, first locking chamber is close to locking seat centre of a circle one side has set firmly first sealed pad, first locking core is kept away from locking seat centre of a circle one side is fixed to be equipped with can be right first locking chamber carries out the sealed primary closing plate, secondary locking chamber keep away from catch bar axle center one side lower extreme with first locking chamber is close to the intercommunication is equipped with the air duct between the locking seat centre of a circle one side upper end, first locking chamber is kept away from locking seat centre of a circle lateral wall face with first closing plate is kept away from fixedly between the locking seat centre of a circle lateral end face is equipped with the auto-lock spring.
Preferably, the rear wall surface of the rope wheel cavity is rotatably provided with a reset rod, the reset rod can penetrate through the front wall surface and the rear wall surface of the rope wheel cavity and extend out of the front side of the lower valve seat, the outer circular surface of the rear side of the reset rod is fixedly provided with a first rope wheel, the outer circular surface of the middle side of the reset rod positioned in the rope wheel cavity is fixedly provided with a third rope wheel, the front side of the third rope wheel is provided with a second rope wheel fixed on the outer circular surface of the reset rod, a guide shaft is fixedly arranged between the front wall surface and the rear wall surface of the upper side and the lower side of the guide cavity, the outer circular surface of the guide shaft is fixedly provided with a guide wheel, the rear end surface of the primary sealing plate at the left side is fixedly provided with a left rope which can bypass the guide wheel from the upper part to the lower part of the same side and is fixed on the second rope wheel in the, an emergency valve core reset rope is fixedly arranged on the lower end face of the locking seat, and the lower end of the emergency valve core reset rope is fixed on the third rope wheel in the rope wheel cavity.
Preferably, an emergency spring is fixedly arranged between the lower end surface of the locking seat and the lower wall surface of the emergency closing cavity.
The invention has the beneficial effects that: according to the invention, the self-locking mechanism is added in the gas valve, the locking seat is locked firstly, the self-locking is released by utilizing the air pressure change during leakage, and the self-locking is released by utilizing the resistance value change of the thermistor during fire, so that the action of closing the valve in time is completed, the further expansion of harm is effectively avoided, and the loss caused by emergency is reduced in time.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a fire and leak resistant emergency shut-off gas valve of the present invention;
FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;
FIG. 3 is a schematic view of the structure in the direction "B-B" of FIG. 1;
FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;
FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 1;
FIG. 6 is an enlarged view of the structure of "E" of FIG. 1;
FIG. 7 is an enlarged view of the structure of "F" of FIG. 4;
fig. 8 is an enlarged view of the structure of "G" of fig. 5.
Detailed Description
The invention will now be described in detail with reference to fig. 1-8, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a fireproof and leakproof emergency closing gas valve which comprises an upper valve seat 11, wherein the upper valve seat 11 is communicated with the lower valve seat 11 up and down, the lower side of the upper valve seat 11 is fixedly provided with a lower valve seat 66, the upper valve seat 11 and the lower valve seat 66 can be separated, the upper side of the lower valve seat 66 is provided with an emergency closing cavity 15 with an upward opening, the inner side wall surface of the upper valve seat 11 is fixedly provided with a flow equalizing cover 19, a manual valve core 27 capable of moving up and down is arranged between the inner walls of the flow equalizing cover 19, an air outlet cavity 17 is arranged between one side of the flow equalizing cover 19, which is far away from the circle center of the manual valve core 27, and the upper valve seat 11, the right side of the upper valve seat 11 is provided with an air outlet pipe 13 capable of extending to the inside of the air outlet cavity 17, an air inlet cavity 14 is arranged between the lower side of, a valve cover 23 is fixedly arranged on the upper side of the upper valve seat 11, a valve cover gasket 24 is arranged between the valve cover 23 and the upper valve seat 11, the valve cover gasket 24 has a sealing effect, a manual closing cavity 16 is arranged between the valve cover 23 and the manual valve core 27, a displacement cavity 18 with a downward opening and communicated with the manual closing cavity 16 is arranged at the lower end of the valve cover 23, an inner rod 25 extending to the manual closing cavity 16 is rotatably arranged on the upper wall surface of the displacement cavity 18, an outer rod 26 is connected to the outer circular surface of the inner rod 25 through a thread, the lower end surface of the outer rod 26 is fixedly connected with the upper end surface of the manual valve core 27, a locking seat 32 capable of moving up and down is arranged on the lower side of the emergency closing cavity 15, a push rod 33 is fixedly arranged on the upper end surface of the locking seat 32, an emergency valve core 34 is fixedly arranged on the upper end surface of the push rod 33, and a working cavity 40 communicated with the emergency closing cavity, working chamber 40 keeps away from catch bar 33 axle center one side is equipped with secondary locking chamber 36, down the upper left side of valve seat 66 with the upper right side of valve seat 66 is equipped with respectively down and extends to admit air chamber 14 with the ordinary pressure chamber 30 of giving vent to anger chamber 17, terminal surface and homonymy under the ordinary pressure chamber 30 secondary locking chamber 36 keeps away from catch bar 33 axle center side end face intercommunication is equipped with power pipeline 65, secondary locking chamber 36 downside is equipped with first locking chamber 42, first locking chamber 42 is close to catch bar 33 axle center one side is equipped with and can extends to the first locking core 43 in emergency shut-off chamber 15, first locking core 43 can be right locking seat 32 carries out the locking, first locking chamber 42 is kept away from locking seat 32 centre of a circle one side is equipped with direction chamber 47, emergency shut-off chamber 15 downside is equipped with rope wheel chamber 63.
Beneficially, a rotatable switch 22 is disposed on the upper side of the valve cover 23, the upper end of the inner rod 25 penetrates through the upper and lower wall surfaces of the valve cover 23 and is fixedly connected with the lower end surface of the rotatable switch 22, a guide chute 28 with an outward opening is disposed on the left side of the outer rod 26 away from the axis of the inner rod 25, and a guide slider 29 extending into the guide chute 28 is fixedly disposed on the lower end of the left side of the displacement cavity 18.
Beneficially, a valve core sealing gasket 21 is fixedly arranged between the lower end face of the flow equalizing cover 19 and the upper end face of the upper valve seat 11, an air guide hole 20 capable of communicating the air outlet cavity 17 with the air inlet cavity 14 is arranged in the middle of the flow equalizing cover 19, and the fuel gas in the air inlet cavity 14 can flow into the air outlet cavity 17 through the air guide hole 20.
Advantageously, a deformable membrane 31 is fixed to the upper end of the atmospheric chamber 30.
Beneficially, a slidable secondary locking core 38 is disposed on one side of the secondary locking cavity 36 close to the axis of the pushing rod 33, the secondary locking core 38 can penetrate through the working cavity 40 and extend into the emergency closing cavity 15, a secondary sealing ring 39 is fixedly disposed on one side of the secondary locking cavity 36 close to the axis of the pushing rod 33, a secondary sealing plate 37 forming a seal with the secondary locking cavity 36 is fixedly disposed on one side of the secondary locking core 38 away from the axis of the pushing rod 33, and reset plates 67 are symmetrically disposed on front and rear sides of an outer circular surface of the secondary locking core 38 in the working cavity 40 and fixedly disposed on the front and rear sides of the outer circular surface of the secondary locking core 38.
Beneficially, power pipeline 65 front and back bilateral symmetry is equipped with electro-magnet core chamber 54, reset plate 67 rear end is fixed to be equipped with and extends to the homonymy move the iron core 53 of electro-magnet core chamber 54 inside, reset plate 67 with working chamber 40 keeps away from it is fixed to be equipped with reset spring 52 between catch bar 33 side wall, the fixed coil 55 that is equipped with of wall around electro-magnet core chamber 54, keep away from catch bar 33 axle center one end move iron core 53 and be located two around between the coil 55, keep away from in electro-magnet core chamber 54 catch bar 33 axle center side wall is fixed to be equipped with and to be equipped with fixed iron core 56, secondary locking chamber 36 rear side is equipped with thermistor 57 that can the induced temperature, fixed iron core 56 with move and fixedly be equipped with electromagnetic spring 58 between the iron core 53.
Beneficially, first locking chamber 42 is close to locking seat 32 centre of a circle one side has set firmly first sealed pad 45, first locking core 43 is kept away from locking seat 32 centre of a circle one side is fixed be equipped with can be right first locking chamber 42 carries out the first sealing plate 44 sealed, secondary locking chamber 36 keep away from catch 33 axle center one side lower extreme with first locking chamber 42 is close to the intercommunication is equipped with air duct 41 between locking seat 32 centre of a circle one side upper end, first locking chamber 42 is kept away from locking seat 32 centre of a circle lateral wall face with first sealing plate 44 is kept away from fixedly be equipped with auto-lock spring 46 between the locking seat 32 centre of a circle lateral end face.
Beneficially, the wall surface rotates behind the rope wheel chamber 63 and is equipped with release link 59, release link 59 can run through wall and extend around rope wheel chamber 63 lower valve seat 66 front side, the outer disc of release link 59 rear side is fixed and is equipped with first rope sheave 60, is located inside rope wheel chamber 63 the outer disc of release link 59 middle side is fixed and is equipped with third rope sheave 62, third rope sheave 62 front side is equipped with and is fixed in second rope sheave 61 of the outer disc of release link 59, be fixed with guiding axle 48 between the wall around the upper and lower both sides of guiding chamber 47, the outer disc of guiding axle 48 is fixed and is equipped with leading wheel 49, the left side first sealing plate 44 rear end face is fixed and is equipped with and can walk around the homonymy about leading wheel 49 and be fixed in inside rope wheel chamber 63 the left side rope 50 of second rope sheave 61, the right side first sealing plate 44 rear end face is fixed and is equipped with and can walk around about leading wheel 49 and be fixed in rope wheel chamber 63 the rope sheave of first rope sheave 60 An emergency valve core reset rope 64 is fixedly arranged on the lower end face of the right rope 51 of the locking seat 32, and the lower end of the emergency valve core reset rope 64 is fixed on the third rope wheel 62 in the rope wheel cavity 63.
Advantageously, an emergency spring 35 is fixedly arranged between the lower end surface of the locking seat 32 and the lower wall surface of the emergency closing chamber 15.
The steps of using a fire and leak resistant emergency shut-off gas valve of the present disclosure are described in detail below with reference to fig. 1-8: in the initial state, the manual valve core 27 is at the upper limit position, the normal pressure chamber 30 is at the normal pressure state, the emergency spring 35 is at the compressed state, the locking seat 32 is at the lower limit position, the primary locking core 43 is at the extended state, the secondary locking core 38 is at the retracted state, the air vent 20 is at the open state, the coil 55 is at the energized state, and the thermistor 57 has a high resistance value.
When the emergency closing valve works, the rotating switch 22 is rotated to drive the inner rod 25 to rotate, so that the outer rod 26 can be driven to move up and down under the action of the guide slider 29, the air inlet pipe 12 is ventilated, fuel gas flows into the air outlet cavity 17 through the air inlet cavity 14 and flows out through the air guide hole 20, the pressure inside the air inlet cavity 14 is increased, the diaphragm 31 is extruded and deformed, so that the gas inside the normal pressure cavity 30 is extruded to the secondary locking cavity 36 through the power pipeline 65 and enters the primary locking cavity 42 through the air guide pipe 41, the primary sealing plate 44 and the primary locking core 43 are driven to move to the side far away from the circle center of the locking seat 32, the self-locking of the locking seat 32 is released, meanwhile, the secondary sealing plate 37 and the secondary locking core 38 move to the side near the axis of the push rod 33 and extend into the emergency closing cavity 15 to perform secondary locking on the locking of the locking seat 32, and the emergency valve core 34 is positioned at the, after the lock holder 32 is raised, the primary lock core 43 is in the extended state again; when the pipeline leaks: the gas pipeline leaks, so that the pressure in the gas inlet cavity 14 is reduced, the deformation amount of the diaphragm 31 is reduced, the air pressure in the secondary locking cavity 36 is reduced, the reset plate 67 is pulled to the side away from the axis of the push rod 33 under the elastic force of the reset spring 52, the self-locking of the locking seat 32 is released again by the secondary locking core 38, the emergency valve core 34 moves upwards under the elastic force of the emergency spring 35 and is mutually abutted with the valve core sealing gasket 21 to form sealing, the gas inlet cavity 14 is closed, and further the gas is prevented from continuously flowing; high temperature misfire and like conditions: the outside temperature rises, and then thermistor 57 resistance inside lower valve seat 66 reduces, and then the inside electric current of coil 55 increases, and then the reinforcing of fixed iron core 56 magnetic force, and then drive movable iron core 53 and be close to fixed iron core 56 one side, and then drive right side rope 51 and remove to keeping away from catch bar 33 axle center one side, and then remove the auto-lock of secondary locking core 38 to locking seat 32, and then drive emergency valve core 34 and close air inlet chamber 14, reach flame retardant efficiency, the reset state: after the emergency is finished, the reset rod 59 extending out of the lower valve seat 66 is rotated, so that the first rope wheel 60, the second rope wheel 61 and the third rope wheel 62 are driven to rotate, the right-side rope 51, the left-side rope 50 and the emergency valve core reset rope 64 are driven to move around, the push rod 33 is driven to move downwards, the primary locking core 43 is driven to move towards one side away from the circle center of the locking seat 32, when the locking seat 32 is located at the lower limit, the reset rod 59 is loosened, the primary locking core 43 is pushed out again under the pressure of the self-locking spring 46, and the self-locking of the locking seat 32 is completed again.
The invention has the beneficial effects that: according to the invention, the self-locking mechanism is added in the gas valve, the locking seat is locked firstly, the self-locking is released by utilizing the air pressure change during leakage, and the self-locking is released by utilizing the resistance value change of the thermistor during fire, so that the action of closing the valve in time is completed, the further expansion of harm is effectively avoided, and the loss caused by emergency is reduced in time.
In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims (9)

1. The utility model provides a fire prevention prevents emergency shutdown gas valve of leakage, includes the disk seat, its characterized in that: the upper valve seat is vertically communicated, a lower valve seat is fixedly arranged on the lower side of the upper valve seat, the upper valve seat and the lower valve seat can be separated, an emergency closing cavity with an upward opening is arranged on the upper side of the lower valve seat, a flow equalizing cover is fixedly arranged on the inner side wall surface of the upper valve seat, a manual valve core capable of moving up and down is arranged between the inner walls of the flow equalizing cover, an air outlet cavity is arranged between one side of the flow equalizing cover, which is far away from the circle center of the manual valve core, and the upper valve seat, an air outlet pipe capable of extending into the air outlet cavity is arranged on the right side of the upper valve seat, an air inlet cavity is arranged between the lower side of the manual valve core and the lower valve seat, an air inlet pipe capable of extending into the air inlet cavity is arranged on the left side of the upper valve seat, a valve cover gasket is arranged between the valve cover and, the lower end of the valve cover is provided with a displacement cavity with a downward opening and communicated with the manual closing cavity, the upper wall surface of the displacement cavity is rotatably provided with an inner rod extending to the manual closing cavity, the outer circular surface of the inner rod is connected with an outer rod in a threaded manner, the lower end surface of the outer rod is fixedly connected with the upper end surface of the manual valve core, the lower side of the emergency closing cavity is provided with a locking seat capable of moving up and down, the upper end surface of the locking seat is fixedly provided with a push rod, the upper end surface of the push rod is fixedly provided with an emergency valve core, one side far away from the axis of the push rod is symmetrically provided with a working cavity communicated with the emergency closing cavity, one side of the working cavity far away from the axis of the push rod is provided with a secondary locking cavity, the upper left side of the lower valve seat and the upper right side of the lower valve seat are respectively provided with a normal pressure cavity extending to the air inlet cavity and the air outlet, secondary locking chamber downside is equipped with first locking chamber, first locking chamber is close to catch bar axle center one side is equipped with and can extends to the first locking core in emergency shutdown chamber, first locking core can be right the locking seat carries out the locking, first locking chamber is kept away from locking seat centre of a circle one side is equipped with the direction chamber, emergency shutdown chamber downside is equipped with the rope pulley chamber.
2. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: the utility model discloses a valve, including valve gap, interior pole axle center left side, the valve gap upside is equipped with can pivoted rotary switch, interior pole upper end run through about the valve gap wall and with rotary switch lower extreme face fixed connection, the outer pole is kept away from interior pole axle center left side is equipped with the outside spout that leads of opening, displacement chamber left side lower extreme is fixed to be equipped with and extends to the inside slider that leads of spout.
3. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: the lower end face of the flow equalizing cover and the upper end face of the upper valve seat are fixedly provided with a valve core sealing gasket, the middle of the flow equalizing cover is provided with a gas guide hole which can communicate the gas outlet cavity with the gas inlet cavity, and gas in the gas inlet cavity can flow into the gas outlet cavity through the gas guide hole.
4. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: and a diaphragm capable of deforming is fixedly arranged at the upper end of the normal pressure cavity.
5. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: the secondary locking chamber is close to catch bar axle center one side is equipped with gliding secondary locking core, the secondary locking core can pass the working chamber extends to the emergency shutdown intracavity, the secondary locking chamber is close to catch bar axle center one side is fixed and is equipped with the secondary sealing washer, the secondary locking core is kept away from catch bar axle center one side is fixed be equipped with the secondary locking chamber forms sealed secondary sealing plate, inside the working chamber bilateral symmetry just fixed reset plate that is equipped with around the outer disc of secondary locking core.
6. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: the utility model discloses a power pipeline, including power pipeline, catch bar, push rod axle center, secondary locking chamber, power pipeline, both sides symmetry is equipped with electro-magnet core chamber around the power pipeline, reset the fixed iron core that extends to the homonymy that is equipped with in board rear end move the iron core that moves of electro-magnet core intracavity portion, reset the board with the working chamber is kept away from fixed reset spring that is equipped with between the wall of push rod one side, the fixed coil that is equipped with of wall around the electro-magnet core chamber keeps away from push rod axle center one end move the iron core and be located two around between the coil, keep away from in the electro-magnet core chamber the fixed iron core that is equipped with in push rod axle center one side wall.
7. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: first locking chamber is close to locking seat centre of a circle one side has set firmly first sealed pad, first locking core is kept away from locking seat centre of a circle one side is fixed be equipped with can be right first locking chamber carries out the primary closing plate sealed, secondary locking chamber keep away from catch bar axle center one side lower extreme with first locking chamber is close to the intercommunication is equipped with the air duct between locking seat centre of a circle one side upper end, first locking chamber is kept away from locking seat centre of a circle one side wall with first closing plate is kept away from fixed auto-lock spring that is equipped with between the locking seat centre of a circle side end face.
8. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: the rear side wall surface of the rope wheel cavity is rotatably provided with a reset rod, the reset rod can penetrate through the front wall surface and the rear wall surface of the rope wheel cavity and extend out of the front side of the lower valve seat, the outer circular surface of the rear side of the reset rod is fixedly provided with a first rope wheel, the outer circular surface of the middle side of the reset rod positioned in the rope wheel cavity is fixedly provided with a third rope wheel, the front side of the third rope wheel is provided with a second rope wheel fixed on the outer circular surface of the reset rod, a guide shaft is fixedly arranged between the front wall surface and the rear wall surface of the upper side and the lower side of the guide cavity, the outer circular surface of the guide shaft is fixedly provided with a guide wheel, the rear end surface of the primary sealing plate at the left side is fixedly provided with a left rope which can bypass the guide wheel at the upper part and the lower part of the same side and is fixed on the second rope, an emergency valve core reset rope is fixedly arranged on the lower end face of the locking seat, and the lower end of the emergency valve core reset rope is fixed on the third rope wheel in the rope wheel cavity.
9. A fire and leak resistant emergency shutdown gas valve as defined in claim 1, wherein: an emergency spring is fixedly arranged between the lower end face of the locking seat and the lower wall face of the emergency closing cavity.
CN202010692190.3A 2020-07-17 2020-07-17 Fire-proof and leak-proof emergency closing gas valve Withdrawn CN111765276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010692190.3A CN111765276A (en) 2020-07-17 2020-07-17 Fire-proof and leak-proof emergency closing gas valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010692190.3A CN111765276A (en) 2020-07-17 2020-07-17 Fire-proof and leak-proof emergency closing gas valve

Publications (1)

Publication Number Publication Date
CN111765276A true CN111765276A (en) 2020-10-13

Family

ID=72728369

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010692190.3A Withdrawn CN111765276A (en) 2020-07-17 2020-07-17 Fire-proof and leak-proof emergency closing gas valve

Country Status (1)

Country Link
CN (1) CN111765276A (en)

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Application publication date: 20201013