CN108413091A - Gas pipeline self-closing valve - Google Patents
Gas pipeline self-closing valve Download PDFInfo
- Publication number
- CN108413091A CN108413091A CN201810398335.1A CN201810398335A CN108413091A CN 108413091 A CN108413091 A CN 108413091A CN 201810398335 A CN201810398335 A CN 201810398335A CN 108413091 A CN108413091 A CN 108413091A
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- CN
- China
- Prior art keywords
- valve
- rod
- gas pipeline
- closing
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000003454 tympanic membrane Anatomy 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 25
- 230000006872 improvement Effects 0.000 description 9
- 239000000567 combustion gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention discloses actuator is equipped in a kind of lower chamber of gas pipeline self-closing valve, actuator is equipped with cam close to one end of valve rod, the end face of one end of valve rod is against on the cam surface of cam, when valve inner air pressure is normal, the end face of one end of valve rod is against on the convex surface of cam, valve rod is moved to valve body air inlet pipe direction at this time, and valve body is in the open state；When gas supply conduit pressure occurs under-voltage, rubber diaphragm moves downward, and drives actuator to move downward, valve is closed to make valve rod be moved to lower chamber direction；When superpressure occurs in gas supply conduit pressure, rubber diaphragm moves upwards, and drives actuator to move upwards, valve is closed to make valve rod be moved to lower chamber direction；It is simple in structure, the closing of core assembly is triggered by cam structure, control accuracy is higher, so that the security performance of self-closing valve is preferable.
Description
Technical field
The present invention relates to gas-fired equipment technical fields, more particularly to a kind of gas pipeline self-closing valve.
Background technology
Clean energy resource of the combustion gas as " low consumption, high yield, low stain, high benefit ", has been widely used the day of people
Often in production and life.During the use of combustion gas, there is following security risk：After gas pipeline, which supplies, to interrupt suddenly, people
Often due to carelessness and forget to close valve, will cause gas leakage after combustion gas restores gas supply, explosion occurs and even joins
Dynamic explosion；Gas pipeline is registered one's residence is transferred to low pressure by pressure regulator by mesohigh, if pressure regulator fails, mesohigh, which is directly registered one's residence, also can
Cause safety accident；It is connect with kitchen range using sebific duct, sebific duct, which falls off or ruptures, can equally cause safety accident.For above-mentioned combustion
Security risk during gas use, it usually needs install the safety valve for having and automatically cutting off gas pipeline function, i.e. self-closing valve.
Self-closing valve is mounted on low-pressure fuel gas system pipeline, when there is under-voltage, superpressure in gas supply conduit pressure, not electricity consumption or other outside
Power can be automatically closed to ensure the safe handling of combustion gas.But the self-closing valve internal structure of the prior art is complicated, passes through drawing
The structure of bar triggers the closing of spool, and control accuracy is relatively low, to influence the security performance of self-closing valve.
Invention content
The technical problem to be solved by the present invention is to provide a kind of gas pipeline self-closing valve, the self-closing valve is simple in structure, passes through
Cam structure triggers the closing of core assembly, and control accuracy is higher, so that the security performance of self-closing valve is preferable.
Technical solution of the invention is to provide a kind of gas pipeline self-closing valve having following structure, including valve body
And valve deck；The valve deck is mounted on the valve body；Self-closing valve chamber is equipped between the valve body and valve deck；Described
It is equipped with rubber diaphragm in self-closing valve chamber and the rubber diaphragm divides the self-closing valve chamber to form mutual disconnected epicoele
Body and lower chamber；The body cavity is connected with the lower chamber；Rod assembly is equipped in the upper cavity, it is described
The lower end of pull rod of rod assembly be fixed on the rubber diaphragm；Core assembly is equipped in the valve body, it is described
The valve rod of core assembly can axially move back and forth the closing to application valve body along the valve body, and one end of the valve rod is stretched
Enter in the lower chamber；Actuator, one end of the actuator and the pull rod are equipped in the lower chamber
Lower end is fixedly connected, and the actuator is equipped with cam, the end face of one end of the valve rod close to the side of the valve rod
It is against on the cam surface of the cam, the valve rod that the actuator moves up and down described in driving moves back and forth.
After using the above structure, gas pipeline self-closing valve of the invention has the following advantages compared with prior art：
Due to being equipped with actuator in the lower chamber of the gas pipeline self-closing valve of the present invention, actuator is equipped with convex close to one end of valve rod
Wheel, the end face of one end of valve rod are against on the cam surface of cam, and when valve inner air pressure is normal, the end face of one end of valve rod is supported
On the convex surface of cam, valve rod is moved to valve body air inlet pipe direction at this time, and valve body is in the open state；When gas supply conduit pressure goes out
When existing under-voltage, rubber diaphragm moves downward, and drives actuator to move downward, is closed to make valve rod be moved to lower chamber direction
Valve；When superpressure occurs in gas supply conduit pressure, rubber diaphragm moves upwards, and drives actuator to move upwards, to make valve rod
It is moved to lower chamber direction and closes valve；It is simple in structure, the closing of core assembly, control accuracy are triggered by cam structure
It is higher, so that the security performance of self-closing valve is preferable.
As an improvement, the rod assembly further includes the first return spring, the valve deck is equipped with pilot hole, described
Pull rod upper end coordinate in the pilot hole；First return spring is sleeved on outside the pull rod, and described the
One end of one return spring is against on valve deck, and the other end of first return spring is against on rubber diaphragm.Using such
After structure, rod assembly drives pull rod to move reciprocatingly by the first return spring, and stress linear change, process is shallower,
Safety coefficient higher.
As an improvement, the lower end of the pull rod is exposed at outside the downside of the rubber diaphragm, under the pull rod
End is equipped with banking stop, and the banking stop limits between the downside of the rubber diaphragm, the pull rod and rubber diaphragm
It is locked by locking member, the locking member is located at the upside of the rubber diaphragm；First return spring it is another
End is against on the locking member.It is simple in structure after adopting the structure, it is easy to assembly.
As an improvement, being equipped with diaphragm support between the locking member and rubber diaphragm.After adopting the structure, structure is more
Add reliable.
As an improvement, the side of the escape pipe in the lower chamber and close to the valve body is equipped with baffle, it is described
There are gaps, the downside of the rubber diaphragm to be equipped with eardrum, institute between the upper end of baffle and the inner face of the escape pipe
The eardrum stated blocks the gap；Rubber diaphragm, which moves up and down, can drive the eardrum to close and be connected the gap.
After adopting the structure, the structure in eardrum and gap can also play self-closing function when pipeline occurs under-voltage, i.e., when in valve body
When portion's air pressure is normal, eardrum is disengaged with gap, and gas is gone to from gap in escape pipe；When gas supply conduit pressure occurs under-voltage,
Rubber diaphragm moves downward, and eardrum blocks gap, and gas is avoided to run in escape pipe；When there is superpressure in gas supply conduit pressure.
As an improvement, the baffle is located at side of the actuator far from cam, the actuator is equipped with
The side of first idler wheel, first idler wheel is against on the side of the baffle, and first idler wheel can be along described
The side of baffle rolls around.After adopting the structure, actuator under the action of the first idler wheel, it is up and down smoothly.
As an improvement, one end of the valve rod is equipped with the second idler wheel, the side of second idler wheel is against described
On cam surface, second idler wheel can be rolled around along the cam surface.As an improvement, effect of the valve rod in the second idler wheel
Under, it is up and down smoothly.
As an improvement, the core assembly further includes spool, seal cap and the second return spring；The spool installation
In the valve body, the spool is equipped with axially directed hole, and the valve rod coordinates in the axially directed hole；Institute
The seal cap stated is connected on the other end of the valve rod, and the seal cap is used to seal the air inlet pipe of the valve body
Inner end；Second return spring is sleeved on outside the valve rod, and one end of second return spring is against on the end face of spool,
The other end of second return spring is against on one end of the valve rod.After adopting the structure, the core assembly knot
Structure is simple, easy to assembly.
As an improvement, the spool is equipped with multiple axial ventholes.It is compact-sized after adopting the structure.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the gas pipeline self-closing valve of the present invention.
Fig. 2 is the main structure diagram of the gas pipeline self-closing valve of the present invention.
Fig. 3 is the schematic cross-sectional view in the directions A-A in Fig. 2.
Fig. 4 is the enlarged structure schematic diagram of part A in Fig. 3.
As shown in the figure：1, valve body, 2, valve deck, 201, convex neck, 202, pilot hole, 3, air inlet pipe, 4, escape pipe, 5, rubber membrane
Piece, 501, eardrum, 6, upper cavity, 7, lower chamber, 8, pull rod, 801, banking stop, 9, valve rod, 10, actuator, 11, cam, 12,
First return spring, 13, pull bonnet, 1301, mounting groove, 14, pressure display button, 15, locking member, 16, diaphragm support, 17,
Baffle, 18, gap, the 19, first idler wheel, the 1901, first wheel shaft, the 1902, first wheel body, the 20, second idler wheel, the 2001, second wheel
Axis, the 2002, second wheel body, 21, spool, 2101, axially directed hole, 2102, axial venthole, 22, seal cap, 23, second times
Position spring, 24, sealing ring.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described, but this
Invention is not limited to these examples.
As shown in Figures 1 to 4, gas pipeline self-closing valve of the invention includes valve body 1 and valve deck 2, the valve deck 2 installation
On the valve body 1.The both ends of the valve body 1 are respectively air inlet pipe 3 and escape pipe 4.The valve deck 2 is buckled in described
On valve body 1, self-closing valve chamber is equipped between the valve body 1 and valve deck 2.Rubber diaphragm 5 is equipped in the self-closing valve chamber
And the self-closing valve chamber is divided the rubber diaphragm 5 to form mutual disconnected upper cavity 6 and lower chamber by the rubber diaphragm 5
7；1 inner cavity of valve body is connected with the lower chamber 7.
Rod assembly is equipped in the upper cavity 6, the lower end of the pull rod 8 of the rod assembly is fixed on the rubber
On glue film 5；Core assembly is equipped in the valve body 1, the valve rod 9 of the core assembly can be axial along the valve body 1
The closing to application valve body 1 is moved back and forth, one end of the valve rod 9 is stretched into the lower chamber 7；The cavity of resorption
Actuator 10 is equipped in body 7, one end of the actuator 10 is fixedly connected with the lower end of the pull rod 8, the driving
Part 10 is equipped with cam 11 close to the side of the valve rod 9, and the end face of one end of the valve rod 9 is against the cam 11
On cam surface, the valve rod 9 that the actuator 10 moves up and down described in driving moves back and forth.The cam surface is convex from top to bottom
The height risen gradually increases to be gradually reduced again, i.e. the middle part of cam surface is most convex.If actuator 10 moves upwards, one end of valve rod 9
It is first against the upside of cam surface, as actuator 10 constantly moves upwards, valve rod 9 is slowly moved to 3 direction of air inlet pipe until valve
Until one end of bar 9 is against the position of cam surface most protruded, then valve rod 9 is slowly moved to 7 direction of lower chamber until valve again
Until door is closed.
The rod assembly further includes the first return spring 12.The upper end of the valve deck 2 is equipped with hollow convex neck
201, the through-hole at 201 middle part of convex neck is pilot hole 202, and the upper end of the pull rod 8 coordinates in the pilot hole 202
It is interior.First return spring 12 is sleeved on outside the pull rod 8, and one end of first return spring 12 is against valve deck 2
On, the other end of first return spring 12 is against on rubber diaphragm 5.The upper end of the convex neck 201 is equipped with hand valve
Cap 13, the upper surface for pulling bonnet 13 are equipped with mounting groove 1301, pressure display button are equipped in the mounting groove 1301
14, the upper end of the pull rod 8 is connect through the slot bottom of the mounting groove 1301 with the pressure display button 14.
The lower end of the pull rod 8 is exposed at outside the downside of the rubber diaphragm 5, and the lower end of the pull rod 8 is equipped with
Banking stop 801, the banking stop 801 limit in the downside of the rubber diaphragm 5, the pull rod 8 and rubber diaphragm 5 it
Between locked by locking member 15, between the locking member 15 and rubber diaphragm 5 be equipped with diaphragm support 16.First return
The other end of spring 12 is against on the locking member 15.
The side of escape pipe 4 in the lower chamber 7 and close to the valve body 1 is equipped with baffle 17, the baffle
17 are located at the side of the actuator 10 far from cam 11.The inner end of the upper end of the baffle 17 and the escape pipe 4
There are gaps 18, the downside of the rubber diaphragm 5 to be equipped with eardrum 501 between face, and the eardrum 501 blocks the gap
18；Rubber diaphragm 5, which moves up and down, can drive the eardrum 501 to close and be connected the gap 18.
The actuator 10 is equipped with the first idler wheel 19, and the side of first idler wheel 19 is against the baffle 17
Side on, first idler wheel 19 can be rolled around along the side of the baffle 17.First idler wheel 19 includes
The both ends of first wheel shaft 1901, first wheel shaft 1901 are equipped with the first wheel body 1902.One end of the valve rod 9 is equipped with
The side of second idler wheel 20, second idler wheel 20 is against on the cam surface, and second idler wheel 20 can be along described
11 face of cam roll around.Second idler wheel 20 includes the second wheel shaft 2001, the both ends of second wheel shaft 2001
It is equipped with the second wheel body 2002.
The core assembly further includes spool 21, seal cap 22 and the second return spring 23.The spool 21 is installed
In the valve body 1, the gap between 21 outer wall of spool and 1 inner wall of valve body is sealed by sealing ring 22.
The spool 21 is equipped with axially directed hole 2101, and the valve rod 9 coordinates in the axially directed hole 2101.Described
Seal cap 22 is connected on the other end of the valve rod 9, and the seal cap 22 is used to seal the air inlet pipe of the valve body 1
3 inner end；Second return spring 23 is sleeved on outside the valve rod 9, and one end of second return spring 23 is against spool
On 21 end face, the other end of second return spring 23 is against on one end of the valve rod 9.The spool 21 is equipped with
Multiple axial direction ventholes 2102.
The operation principle of the gas pipeline self-closing valve of the present invention is as follows：
When initial position, rubber diaphragm 5 is horizontal, and second idler wheel 20 of one end of valve rod 9 is located at the cam 11
Upside, at this time valve be in off state.When have in pipeline combustion gas by when and 1 air pressure inside of valve body it is normal when, rubber diaphragm 5
It can gradually be heaved to upper cavity direction, rubber diaphragm 5 drives pull rod 8 to move upwards, and pull rod 8 drives actuator 10 to move upwards,
The convex surface of cam 11 gradually contradicts valve rod 9 and is moved to 3 direction of air inlet pipe, and seal cap 22 is gradually disengaged with 3 inner end of air inlet pipe, valve
It is opened；When gas supply conduit pressure occurs under-voltage, rubber diaphragm 5 moves downward, and drives actuator 10 to move downward, to make
Valve rod 9 is moved to 7 direction of lower chamber until closing valve；When superpressure occurs in gas supply conduit pressure, rubber diaphragm 5 is transported upwards
It is dynamic, it drives actuator 10 to move upwards, valve is closed to make valve rod 9 be moved to 7 direction of lower chamber.
Claims (9)
1. a kind of gas pipeline self-closing valve, it is characterised in that：Including valve body and valve deck；The valve deck is mounted on the valve body
On；Self-closing valve chamber is equipped between the valve body and valve deck；Rubber diaphragm and the rubber are equipped in the self-closing valve chamber
Diaphragm divides the self-closing valve chamber to form mutual disconnected upper cavity and lower chamber；The body cavity with it is described
Lower chamber is connected；
Rod assembly is equipped in the upper cavity, the lower end of the pull rod of the rod assembly is fixed on the rubber diaphragm
On；Be equipped with core assembly in the valve body, the valve rod of the core assembly can axially be moved back and forth along the valve body from
And the closing of application valve body, one end of the valve rod are stretched into the lower chamber；Driving is equipped in the lower chamber
Part, one end of the actuator are fixedly connected with the lower end of the pull rod, and the actuator is close to the valve rod
Side is equipped with cam, and the end face of one end of the valve rod is against on the cam surface of the cam, above and below the actuator
The movement driving valve rod moves back and forth.
2. gas pipeline self-closing valve according to claim 1, it is characterised in that：The rod assembly further includes first time
Position spring, the valve deck are equipped with pilot hole, and the upper end of the pull rod coordinates in the pilot hole；Described first
Return spring is sleeved on outside the pull rod, and one end of first return spring is against on valve deck, the first return bullet
The other end of spring is against on rubber diaphragm.
3. gas pipeline self-closing valve according to claim 2, it is characterised in that：The lower end of the pull rod is exposed at described
Rubber diaphragm downside outside, the lower end of the pull rod is equipped with banking stop, and the banking stop is limited in the rubber membrane
The downside of piece is locked between the pull rod and rubber diaphragm by locking member, and the locking member is located at the rubber membrane
The upside of piece；The other end of first return spring is against on the locking member.
4. gas pipeline self-closing valve according to claim 3, it is characterised in that：Between the locking member and rubber diaphragm
Equipped with diaphragm support.
5. gas pipeline self-closing valve according to claim 1, it is characterised in that：In the lower chamber and close to described
The side of the escape pipe of valve body be equipped with baffle, between the upper end of the baffle and the inner face of the escape pipe there are
The downside of gap, the rubber diaphragm is equipped with eardrum, and the eardrum blocks the gap；Rubber diaphragm up and down motion can drive
Move the gap that the eardrum is closed and conducting is described.
6. gas pipeline self-closing valve according to claim 5, it is characterised in that：The baffle is located at the actuator
Side far from cam, the actuator are equipped with the first idler wheel, and the side of first idler wheel is against the baffle
Side on, first idler wheel can be rolled around along the side of the baffle.
7. gas pipeline self-closing valve according to claim 1, it is characterised in that：One end of the valve rod is equipped with the second rolling
The side of wheel, second idler wheel is against on the cam surface, and second idler wheel can be along the cam surface back and forth
It rolls.
8. gas pipeline self-closing valve according to claim 1, it is characterised in that：The core assembly further include spool,
Seal cap and the second return spring；The spool is mounted in the valve body, and the spool is equipped with axially directed hole, institute
The valve rod stated coordinates in the axially directed hole；The seal cap is connected on the other end of the valve rod, described
Seal cap be used to seal the valve body air inlet pipe inner end；Second return spring is sleeved on outside the valve rod,
One end of second return spring is against on the end face of spool, and the other end of second return spring is against the one of the valve rod
On end.
9. gas pipeline self-closing valve according to claim 8, it is characterised in that：The spool is logical equipped with multiple axial directions
Stomata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810398335.1A CN108413091A (en) | 2018-04-28 | 2018-04-28 | Gas pipeline self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810398335.1A CN108413091A (en) | 2018-04-28 | 2018-04-28 | Gas pipeline self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108413091A true CN108413091A (en) | 2018-08-17 |
Family
ID=63137107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810398335.1A Pending CN108413091A (en) | 2018-04-28 | 2018-04-28 | Gas pipeline self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108413091A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058534A (en) * | 2018-10-10 | 2018-12-21 | 李仲伦 | A kind of mechanical pipe gas self-closing valve |
| CN110748678A (en) * | 2019-11-01 | 2020-02-04 | 苏州福特曼机器人系统有限公司 | Natural gas self-closing valve |
| CN112096935A (en) * | 2020-09-29 | 2020-12-18 | 陕西大唐燃气安全科技股份有限公司 | Gas self-closing valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2879789A (en) * | 1952-02-16 | 1959-03-31 | Towler Frank Hathorn | Hydraulic control valves |
| DE19952610A1 (en) * | 1998-11-24 | 2000-05-25 | Fiorentini Minireg S P A | Stop valve for controlling low and high pressure fluid flow has cam which shifts with diaphragm based on variation in pressure of fluid |
| CN101260944A (en) * | 2008-05-07 | 2008-09-10 | 常州市科信燃气设备有限公司 | Gas pressure regulator cut-off valve |
| JP2014098544A (en) * | 2007-04-20 | 2014-05-29 | Fisher Controls International Llc | Emergency shutdown safety device |
| CN104514902A (en) * | 2013-09-26 | 2015-04-15 | 江门市尚域科技开发有限公司 | Gas valve |
| CN105485383A (en) * | 2014-10-01 | 2016-04-13 | 爱默生过程管理调压器技术公司 | Slam shut safety device |
| CN107448624A (en) * | 2017-08-25 | 2017-12-08 | 西安万泰燃气设备有限公司 | A kind of modified form pipe gas self-closing valve |
| CN208487249U (en) * | 2018-04-28 | 2019-02-12 | 苏州福特曼机器人系统有限公司 | Gas pipeline self-closing valve |
-
2018
- 2018-04-28 CN CN201810398335.1A patent/CN108413091A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2879789A (en) * | 1952-02-16 | 1959-03-31 | Towler Frank Hathorn | Hydraulic control valves |
| DE19952610A1 (en) * | 1998-11-24 | 2000-05-25 | Fiorentini Minireg S P A | Stop valve for controlling low and high pressure fluid flow has cam which shifts with diaphragm based on variation in pressure of fluid |
| JP2014098544A (en) * | 2007-04-20 | 2014-05-29 | Fisher Controls International Llc | Emergency shutdown safety device |
| CN101260944A (en) * | 2008-05-07 | 2008-09-10 | 常州市科信燃气设备有限公司 | Gas pressure regulator cut-off valve |
| CN104514902A (en) * | 2013-09-26 | 2015-04-15 | 江门市尚域科技开发有限公司 | Gas valve |
| CN105485383A (en) * | 2014-10-01 | 2016-04-13 | 爱默生过程管理调压器技术公司 | Slam shut safety device |
| CN107448624A (en) * | 2017-08-25 | 2017-12-08 | 西安万泰燃气设备有限公司 | A kind of modified form pipe gas self-closing valve |
| CN208487249U (en) * | 2018-04-28 | 2019-02-12 | 苏州福特曼机器人系统有限公司 | Gas pipeline self-closing valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058534A (en) * | 2018-10-10 | 2018-12-21 | 李仲伦 | A kind of mechanical pipe gas self-closing valve |
| CN109058534B (en) * | 2018-10-10 | 2023-08-15 | 台州联自环化阀门有限公司 | Mechanical pipeline gas self-closing valve |
| CN110748678A (en) * | 2019-11-01 | 2020-02-04 | 苏州福特曼机器人系统有限公司 | Natural gas self-closing valve |
| CN112096935A (en) * | 2020-09-29 | 2020-12-18 | 陕西大唐燃气安全科技股份有限公司 | Gas self-closing valve |
| CN112096935B (en) * | 2020-09-29 | 2024-03-19 | 陕西大唐燃气安全科技股份有限公司 | Gas self-closing valve |
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