CN114877111A - Gas safety control device - Google Patents
Gas safety control device Download PDFInfo
- Publication number
- CN114877111A CN114877111A CN202210811835.XA CN202210811835A CN114877111A CN 114877111 A CN114877111 A CN 114877111A CN 202210811835 A CN202210811835 A CN 202210811835A CN 114877111 A CN114877111 A CN 114877111A
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- China
- Prior art keywords
- cantilever
- valve
- alloy wire
- gas
- torsion spring
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- 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.)
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Classifications
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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
- 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
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to the field of valves, in particular to a gas safety control device which solves the technical problem that the gas cannot be automatically shut off under the conditions of gas leakage and abnormal environment temperature, and is provided with a gas flow path for gas flow, a shut-off valve for shutting off gas supply, and a linkage part for supporting the opening and closing of the shut-off valve, wherein the linkage part is provided with a temperature sensing alloy wire, a lever mechanism, a torsion spring, a cantilever and a rotating wheel for driving a valve connecting rod, the rotating wheel is fixedly connected with the cantilever, the temperature sensing alloy wire is connected with one end of the lever mechanism, the other end of the lever mechanism is provided with a cantilever pulling assembly, and the cantilever pulling assembly can maintain a mechanical balance relation; when the temperature sensing alloy wire contracts, the cantilever and the rotating wheel can drive the cut-off valve to cut off a gas flow path through the valve connecting rod under the torsion action of the torsion spring. The invention can be widely applied to the shutoff of fuel gas in the case of fuel gas leakage and abnormal ambient temperature.
Description
Technical Field
The invention relates to the field of valves, in particular to a gas safety control device.
Background
With the continuous improvement of the living standard of Chinese people, combustible gas is used more and more widely, and fuel gas becomes the main energy of the life of urban residents, so that the potential safety hazard is increased gradually. Therefore, it is necessary to provide a gas safety device for gas leakage and abnormal ambient temperature, so as to prevent the gas leakage and reduce the accident and loss.
Disclosure of Invention
The invention provides a gas safety control device capable of automatically shutting off under the conditions of gas leakage and environment temperature rise, aiming at solving the technical problem that the gas cannot be automatically shut off under the conditions of gas leakage and environment temperature abnormality.
The invention provides a gas safety control device, which is provided with a gas flow path for gas to flow and a cut-off valve for cutting off gas supply, and is characterized in that the gas safety control device is provided with a linkage part for supporting the opening and closing of the cut-off valve, wherein the linkage part is provided with a temperature sensing alloy wire, a lever mechanism, a torsion spring, a cantilever driving a valve connecting rod and a rotating wheel; when the temperature sensing alloy wire contracts, the cantilever and the rotating wheel can drive the cut-off valve to cut off a gas flow path through the valve connecting rod under the torsion action of the torsion spring.
Preferably, one end of the torsion spring is fixed to the housing of the linkage portion, and the other end of the torsion spring is fixed to the rotating wheel, and the torsion of the torsion spring when the rotating wheel controls the opening state of the cut-off valve is larger than that when the rotating wheel controls the closing state of the cut-off valve.
Preferably, the condition that the temperature-sensing alloy wire contracts is that the environmental temperature exceeds a set threshold or the temperature-sensing alloy wire is electrified to generate heat to reach a set temperature.
Preferably, the cantilever pulling assembly is a magnetic member or a hook.
Preferably, the magnetic part is the magnetic path of inter attraction, the magnetic path is installed respectively the cantilever with lever mechanism, the magnetic path inter attraction pulling the cantilever makes the trip valve open, the magnetic path appeal slightly is greater than the pulling force of torsion spring effect on the actuation face.
Preferably, the hook is arranged at the end part of the lever mechanism, the hook pulls the cantilever, and the lever mechanism is also provided with a spring for compressing and resetting.
Preferably, the linkage part is further provided with a control and drive module, the control and drive module is connected with two ends of the temperature sensing alloy wire through electric wires, and the control and drive module receives a valve closing instruction signal of external equipment in a wired or wireless mode and then energizes the temperature sensing alloy wire.
Preferably, the two ends of the temperature sensing alloy wire are provided with connecting terminals, and the connecting terminals directly connect the temperature sensing alloy wire with external equipment.
The invention has the beneficial effects that:
1. the control device is internally provided with a temperature strain structure which is linked with a stop valve arranged on a gas flow path, and can automatically cut off the gas supply when a fire disaster or abnormal high temperature of the environment occurs; the temperature strain structure adopts temperature sensing alloy wires, when the environmental temperature exceeds a threshold value (such as 55 ℃), the lever mechanism is driven by the self-contraction stress to break the mechanical balance relation between the torsion spring component and the magnetic component or the hook component, so that the rotating wheel drives the cut-off valve to cut off the fuel gas flow path through the valve connecting rod under the torsion action of the torsion spring.
2. The control device is provided with a control and drive module, has an executable function, receives an alarm signal of the combustible gas concentration detector in a wired or wireless mode, and executes a gas supply closing instruction of the detector.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a structure of a linkage portion in embodiment 1 of the invention;
fig. 3 is a schematic view of a linkage part hook structure in embodiment 2 of the present invention.
Description of the symbols of the drawings:
1. a gas flow path; 2. a shut-off valve; 3. a linkage part fixing member; 4. a valve connecting rod; 5. a rotating wheel; 6. a torsion spring; 7. a torsion spring anchor point; 8. a torsion spring anchoring hole; 9. a handle link; 10. a handle; 11. a lever limiting block; 12. a first magnetic block; 13. a cantilever; 14. a second magnetic block; 15. a lever shaft; 16. an electric wire; 17. a temperature-sensitive alloy wire; 18. a first connection terminal; 19. a second connection terminal; 20. a valve closing limiting block; 22. a control and drive module; 23. a methane concentration tester; 24. a lever; a return spring; 29, fixing a spring block; 32, hanging hooks; 40. an interlocking part.
Detailed Description
The present invention is further described below with reference to the drawings and examples so that those skilled in the art can easily practice the present invention.
Example 1:
as shown in fig. 1 and 2, the present embodiment is provided with a gas flow path 1 through which gas flows, a shut valve 2 for shutting off the supply of gas, and an interlocking section 40 for supporting the opening and closing of the shut valve, wherein the interlocking section 40 is connected to the gas flow path 1 via an interlocking section fixing member 3, a handle 10 is connected to a runner 5 of the interlocking section 40 via a handle link 9, and the handle 10 is used for urging a torsion spring 6 to cause the runner 5 to pull a cantilever 13 to a second position, thereby opening the shut valve 2.
A control and drive device and a reset turn-off device are arranged in the linkage part 40, the control and drive device is provided with a control and drive module 22, a temperature sensing alloy wire 17, a lever 24 and a first magnetic block 12, two ends of the temperature sensing alloy wire 17 are provided with a first wiring terminal 18 and a second wiring terminal 19, the control and drive module 22 is connected with the second wiring terminal 19, the first wiring terminal 18 is connected with one end of the lever 24, the end can also be connected with a hand-push structure for manually completing the action of the lever 24, and the lever 24 rotates by taking a lever rotating shaft 15 as a fulcrum, so that the turn-off valve 2 is disconnected or periodically pushed to ensure that the reset turn-off action can be effective; the other end of the lever 24 is connected with the first magnetic block 12.
The temperature-sensitive alloy wire 17 contracts when being affected by external temperature (for example, more than 55 ℃), and the contraction stress breaks the mechanical balance between the torsion spring 6 and the magnetic member, so that the runner 5 cuts off the gas flow path 1 under the action of the torsion spring 6. The control and drive module 22 is also connected with the temperature sensing alloy wire 17 through the wire 16, when the control and drive module 22 receives a valve closing instruction signal of an external device in a wired or wireless mode, a certain current is applied to the temperature sensing alloy wire 17, the internal temperature of the temperature sensing alloy wire part rises and generates contraction stress under a certain current intensity, and the contraction stress can break the mechanical balance relationship between the torsion spring 6 and the magnetic part, so that the rotating wheel 5 cuts off the gas flow path 1 under the action of the torsion spring 6.
The two ends of the temperature sensing alloy wire 17 are provided with a first connecting terminal 18 and a second connecting terminal 19, the temperature sensing alloy wire 17 can be directly connected with external equipment through the first connecting terminal 18 and the second connecting terminal 19, the gas supply is cut off through an external equipment driving system, and the external equipment can be a gas alarm, a gas safety intelligent judgment device, a timing control device or a methane concentration tester 23 and the like.
The reset turn-off device is provided with a rotating wheel 5 and a torsion spring 6 and is responsible for driving a valve connecting rod 4 to open and close the turn-off valve 2, one end of the torsion spring 6 is fixed at a torsion spring anchoring point 7 on the shell of the linkage part 40, the other end of the torsion spring 6 is fixed at a torsion spring anchoring hole 8 of the rotating wheel 5, the rotating wheel 5 is provided with a fixed cantilever 13, the fixed cantilever 13 is provided with a second magnetic block 14, the magnetic block is opposite to and mutually attracted to the first magnetic block 12 arranged on the lever 24, the design principle of the magnetic force is that when the magnetic blocks are in an attraction state, the turn-off valve 2 is in an opening state, and at the moment, the magnetic force is slightly larger than the pulling force of the torsion spring 6 acting on the attraction surface. When the fixed cantilever 13 is in the first position, the torsion force provided by the torsion spring 6 is small, and when the fixed cantilever 13 is in the second position, the torsion force provided by the torsion spring 6 is large, and the torsion force of the torsion spring 6 needs to be specifically designed according to the damping size of the cut-off valve 2.
The first magnetic block 12 and the second magnetic block 14 are mutually attracted, the tension torsion spring 6 is responsible for maintaining the opening of the valve, and the fixed cantilever 13 is stabilized at a second position; when the temperature sensing alloy wire 17 meets the condition that the environmental temperature exceeds a threshold value (for example, 55 ℃), the lever 24 is driven by the self-contraction stress to break the mechanical balance relationship between the torsion spring 6 and the magnetic force component, so that the rotating wheel 5 drives the cut-off valve 2 to cut off the gas flow path 1 through the valve connecting rod 4 under the torsion action of the torsion spring 6, and the fixed cantilever 13 is limited by the closed valve limiting block 20 and is stabilized at a position. When the fixed cantilever 13 is separated from the second position, the handle 10 can be rotated, and the rotating wheel 5 drives the fixed cantilever 13, so that the second magnetic block 14 and the first magnetic block 12 are close to each other again and attract each other, and the fixed cantilever 13 is kept stable at the second position.
The lever limiting block 11 is used for limiting the moving range of the lever 24, so that the cut-off valve 2 is kept in an open state, the valve closing limiting block 20 limits the position of the fixed cantilever 13, and the valve closing limiting block 20 can prevent the valve closing action of the cut-off valve 2 from being executed excessively to cause the cut-off valve 2 to be opened again.
Example 2:
as shown in fig. 3, the control and drive device and the reset shutoff device inside the linkage portion 40 of the present embodiment are connected through a hook member to maintain the tension of the torsion spring 6, the control and drive device is provided with a control and drive module 22, a temperature sensing alloy wire 17, a reset spring 27, a spring fixing block 29 and a lever 24, the end portion of the lever 24 is provided with a hook 32, the reset shutoff device is provided with a rotating wheel 5 and the torsion spring 6, the rotating wheel 5 is provided with a fixed cantilever 13, the hook 32 is in direct contact with the front end of the fixed cantilever 13, the hook 32 hooks the fixed cantilever 13 to counteract the torsion of the torsion spring 6 and maintain the shutoff valve 2 in an open state, the lateral side of the lever 24 is provided with the reset spring 27 fixed on the spring fixing block 29, which can apply a horizontal pushing force to the lever 24 to ensure the reliable fixation between the hook 32 and the cantilever 13.
When the temperature sensing alloy wire 17 meets the condition that the environmental temperature exceeds a threshold value or after being electrified (for example, the temperature exceeds 55 ℃), the lever 24 is driven to move through the self-contraction stress, the hook 32 is loosened from the cantilever 13, and the rotating wheel 5 drives the cut-off valve 2 to cut off the gas flow path 1 through the valve connecting rod 4 under the torsion action of the torsion spring 6; after the fixed cantilever 13 is separated from the hook 32, the hook 32 and the cantilever 13 are maintained to be stably fixed again by manually rotating the handle 10 and relying on the pushing of the return spring 27, and the cut-off valve 2 is opened.
The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. All changes, equivalents, modifications and the like which come within the scope of the invention as defined by the appended claims are intended to be embraced therein.
Claims (8)
1. A gas safety control device is provided with a gas flow path for gas to flow and a cut-off valve for cutting off gas supply, and is characterized in that a linkage part for supporting the cut-off valve to open and close is arranged, the linkage part is provided with a temperature sensing alloy wire, a lever mechanism, a torsion spring, a cantilever driving a valve connecting rod and a rotating wheel, the rotating wheel is fixedly connected with the cantilever, the temperature sensing alloy wire is connected with one end of the lever mechanism, the other end of the lever mechanism is provided with a cantilever pulling assembly, and the cantilever pulling assembly can maintain a mechanical balance relationship; when the temperature sensing alloy wire contracts, the cantilever and the rotating wheel can drive the cut-off valve to cut off a gas flow path through the valve connecting rod under the torsion action of the torsion spring.
2. The gas safety control device according to claim 1, wherein one end of the torsion spring is fixed to the housing of the linkage portion, and the other end of the torsion spring is fixed to the runner, and the torsion force of the torsion spring is larger when the runner controls the shutoff valve to be in the open state than when the runner controls the shutoff valve to be in the closed state.
3. The gas safety control device according to claim 1, wherein the condition that the temperature-sensitive alloy wire contracts is that an ambient temperature exceeds a set threshold or the temperature-sensitive alloy wire is electrified to generate heat to reach a set temperature.
4. The gas safety control device according to claim 1, wherein the cantilever pulling assembly is a magnetic member or a hook.
5. The gas safety control device of claim 4, wherein the magnetic component is a magnet that attracts each other, the magnet is installed on the cantilever and the lever mechanism, the magnet attracts each other to pull the cantilever to open the cut-off valve, and the attraction force of the magnet is slightly larger than the pulling force of the torsion spring acting on the attraction surface.
6. The gas safety control device according to claim 4, wherein the hook is installed at the end of the lever mechanism, the hook pulls the cantilever, and the lever mechanism is further provided with a spring for compressing and resetting.
7. The gas safety control device according to any one of claims 1 to 6, wherein the linkage part is further provided with a control and drive module, the control and drive module is connected with two ends of the temperature sensing alloy wire through an electric wire, and the control and drive module receives a valve closing instruction signal of an external device in a wired or wireless manner and then energizes the temperature sensing alloy wire.
8. The gas safety control device according to claim 7, wherein the temperature-sensitive alloy wire is provided with terminals at both ends thereof, and the terminals directly connect the temperature-sensitive alloy wire with external equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811835.XA CN114877111B (en) | 2022-07-12 | 2022-07-12 | Gas safety control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210811835.XA CN114877111B (en) | 2022-07-12 | 2022-07-12 | Gas safety control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114877111A true CN114877111A (en) | 2022-08-09 |
| CN114877111B CN114877111B (en) | 2022-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210811835.XA Active CN114877111B (en) | 2022-07-12 | 2022-07-12 | Gas safety control device |
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| Country | Link |
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| CN (1) | CN114877111B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3613732A (en) * | 1969-07-17 | 1971-10-19 | Robertshaw Controls Co | Temperature-responsive valve operators |
| US4884780A (en) * | 1985-04-26 | 1989-12-05 | Nissan Motor Company, Limited | Valve actuating arrangement |
| US5586722A (en) * | 1995-05-05 | 1996-12-24 | Murray; Jerome L. | Temperature and flow control valve |
| CN2262149Y (en) * | 1996-07-17 | 1997-09-10 | 张德鑫 | Electromagnetic cut-off valve for household gas burning device |
| CN1536253A (en) * | 2003-04-03 | 2004-10-13 | 北京昱创伟业温控消防新技术有限公司 | Magnetic safety valve for shuting off harmful fluid |
| US20120011843A1 (en) * | 2009-03-03 | 2012-01-19 | Hexagon Technology As | Shape Memory Alloy Trigger for Pressure Relief Valve |
| CN104464204A (en) * | 2014-12-19 | 2015-03-25 | 东南大学 | Household gas leakage alarm and automatic gas source cutoff device |
| CN215489133U (en) * | 2021-05-12 | 2022-01-11 | 中国石油化工股份有限公司洛阳分公司工会委员会 | Automatic cut-off gas source protection device |
-
2022
- 2022-07-12 CN CN202210811835.XA patent/CN114877111B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3613732A (en) * | 1969-07-17 | 1971-10-19 | Robertshaw Controls Co | Temperature-responsive valve operators |
| US4884780A (en) * | 1985-04-26 | 1989-12-05 | Nissan Motor Company, Limited | Valve actuating arrangement |
| US5586722A (en) * | 1995-05-05 | 1996-12-24 | Murray; Jerome L. | Temperature and flow control valve |
| CN2262149Y (en) * | 1996-07-17 | 1997-09-10 | 张德鑫 | Electromagnetic cut-off valve for household gas burning device |
| CN1536253A (en) * | 2003-04-03 | 2004-10-13 | 北京昱创伟业温控消防新技术有限公司 | Magnetic safety valve for shuting off harmful fluid |
| US20120011843A1 (en) * | 2009-03-03 | 2012-01-19 | Hexagon Technology As | Shape Memory Alloy Trigger for Pressure Relief Valve |
| CN104464204A (en) * | 2014-12-19 | 2015-03-25 | 东南大学 | Household gas leakage alarm and automatic gas source cutoff device |
| CN215489133U (en) * | 2021-05-12 | 2022-01-11 | 中国石油化工股份有限公司洛阳分公司工会委员会 | Automatic cut-off gas source protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114877111B (en) | 2022-12-09 |
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