Gas safety device

Abstract

The invention relates to the technical field of fuel gas safety, and discloses a fuel gas safety device.The fuel gas safety device comprises a carrier plate and a vertical plate, the problem that an existing device cannot automatically cut off fuel gas when monitoring fuel gas leakage is solved through an arranged control assembly, and whether fuel gas leakage occurs or not is monitored through an electrolyte box in the control assembly; when fuel gas leaks, the electrolyte can generate oxidation-reduction reaction, the generated current enables the valve plate to rotate to automatically cut off fuel gas in the on-off pipe to avoid further leakage of the fuel gas, the safety of the fuel gas safety device is improved, the problem that the fuel gas safety device is tedious to disassemble and assemble in a narrow space is solved through the arranged fixing assembly, and the service life of the fuel gas safety device is prolonged. According to the fuel gas safety device, the mounting column in the fixing assembly is directly inserted into the hole of the mounting plate, the fixing claw can be automatically unfolded to fix the fuel gas safety device on the mounting plate, the fuel gas safety device can be disassembled only by pressing the two pressing plates at the same time if disassembly and maintenance are needed, and the disassembly and assembly convenience of the fuel gas safety device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas safety, in particular to a gas safety device. Background Art

[0002] Gas is flammable and will form a combustible mixture when it leaks and mixes with air. If the gas leaks in a relatively closed space and mixes with air to a certain explosion limit, it will explode when it encounters a suitable ignition source. The powerful impact force generated by the explosion will cause serious damage to the building structure, causing wall collapse and broken doors and windows. At the same time, it will also generate high temperatures and strong pressure waves, causing serious harm and damage to surrounding people and objects. Its power is often greater than that of a simple fire.

[0003] Most existing gas safety devices only have a gas leak alarm function, and do not have the function of automatically cutting off the gas. When no one is at home or the alarm is not heard when sleeping late at night, gas will accumulate in the small and enclosed space of the kitchen, posing a risk of explosion, which reduces the safety of the safety device. For the sake of aesthetics, most existing gas safety devices are installed in cabinets by bolt fastening. Due to the small space of the cabinet, it is inconvenient for installers to install and disassemble for subsequent maintenance, resulting in low convenience in disassembly and assembly of the gas safety device. Summary of the Invention

[0004] (1) Technical problems solved In view of the deficiencies of the prior art, the present invention provides a gas safety device that solves the problems of poor safety and low convenience of the prior art.

[0005] (2) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: A gas safety device includes a carrier plate and a vertical plate: The control assembly includes a mounting valve body fixedly connected to the upper surface of a carrier plate, a slide groove is formed in the mounting valve body, an iron core is slidably connected in the slide groove, an end of the iron core away from the mounting valve body is fixedly connected to a toothed plate, an end of the carrier plate away from the mounting valve body is fixedly connected to an on-off tube, a shaft is rotatably connected to the on-off tube, an outer wall of the shaft is fixedly connected to a valve plate, and the valve plate is located in the on-off tube, and an end of the shaft close to the toothed plate is fixedly connected to a spur gear, and the teeth of the spur gear mesh with the teeth of the toothed plate; The fixing component comprises two mounting columns symmetrically mounted on the vertical plate, wherein movable grooves are provided in the mounting columns, and a push rod is slidably mounted in the movable grooves.

[0006] Preferably, two mounting grooves are symmetrically provided on the on-off tube, and coil springs are fixedly connected in the mounting grooves.

[0007] Preferably, a snap-in groove and an unlocking groove are provided in the mounting column, a support ring is slidably installed in the snap-in groove, a plurality of fixing claws are evenly installed on one end of the support ring close to the vertical plate, and the plurality of fixing claws are rotatably connected to the support ring, and the support ring is fixedly connected to the outer wall of the push rod.

[0008] Preferably, a plurality of protruding grooves are evenly formed on the surface of the mounting post, and the protruding grooves are adapted to the fixing claws.

[0009] Preferably, the outer wall of the mounting valve body is fixedly connected to a shell, an end of the shell away from the mounting valve body is provided with an air inlet, and the inner wall of the air inlet is fixedly connected to a filter.

[0010] Preferably, an adsorption box and an electrolyte box are fixedly connected in the shell, and electrode plates are fixedly connected on both sides of the electrolyte box.

[0011] Preferably, a coil groove is provided in the mounting valve body, and a coil is fixedly connected in the coil groove.

[0012] Preferably, an arc-shaped extrusion plate is fixedly connected to one end of the support ring close to the fixing claw, and the arc-shaped extrusion plate is adapted to the fixing claw, and an outer wall of the push rod is fixedly connected to a limiting ring.

[0013] Preferably, the push rod is provided with a second spring, and the second spring is located in the unlocking groove, the outer wall of the mounting column is fixedly connected to a ring plate, the mounting column is provided with a first spring, and the first spring is located between the ring plate and the vertical plate, and the end of the push rod away from the mounting column is fixedly connected to a pressing plate.

[0014] Preferably, both ends of the on-off tube are fixedly connected with connecting nuts.

[0015] In summary, the technical effects and advantages of the present invention are as follows: In the present invention, the problem that the existing device cannot automatically cut off the gas when a gas leak is detected is solved by setting a control component. The present invention monitors whether a gas leak occurs through the electrolyte box in the control component. When a gas leak occurs, the electrolyte will undergo an oxidation-reduction reaction. The generated current causes the valve plate to rotate and automatically cut off the gas in the on-off pipe to prevent further gas leakage, thereby improving the safety of the gas safety device. The problem of cumbersome disassembly and assembly of the gas safety device in a small space is solved by setting a fixing component. The present invention directly inserts the mounting column in the fixing component into the hole of the mounting plate, and the fixing claws will automatically expand to fix the gas safety device to the mounting plate. If disassembly and maintenance are required, it can be disassembled by pressing the two pressing plates at the same time, thereby improving the convenience of disassembly and assembly of the gas safety device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a gas safety device of the present invention; Figure 2 This is a schematic structural diagram of a housing of a gas safety device according to the present invention; Figure 3 This is a schematic cross-sectional view of the installation valve body of a gas safety device of the present invention; Figure 4 This is a schematic cross-sectional view of the on-off pipe portion of a gas safety device according to the present invention; Figure 5 This is a schematic structural diagram of the extension groove of a gas safety device of the present invention; Figure 6 This is a schematic cross-sectional view of the installation column of a gas safety device of the present invention; Figure 7 A gas safety device of the present invention Figure 6 A magnified schematic diagram of the structure at point A.

[0017] In the figure: 1. Air inlet; 2. On-off pipe; 3. Shell; 4. Connecting nut; 5. Carrier plate; 6. Valve body installation; 7. Spur gear; 8. Ring plate; 9. Tooth plate; 10. Vertical plate; 11. Press plate; 12. Slide groove; 13. Coil groove; 14. Iron core; 15. Adsorption box; 16. Electrolyte box; 17. Valve plate; 18. Mounting groove; 19. Coil spring; 20. Mounting column; 21. Spring 1; 22. Extending groove; 23. Fixed claw; 24. Push rod; 25. Moving groove; 26. Unlocking groove; 27. Clamping groove; 28. Arc extrusion plate; 29. ​​Support ring; 30. Limiting ring; 31. Spring 2; 32. Electrode plate; 33. Shaft. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] refer to Figure 1-Figure 7, a gas safety device shown, includes a carrier plate 5 and a vertical plate 10, a control assembly, including a mounting valve body 6 fixedly connected to the upper surface of the carrier plate 5, a slide groove 12 is opened in the mounting valve body 6, an iron core 14 is slidably connected in the slide groove 12, and the end of the iron core 14 away from the mounting valve body 6 is fixedly connected to the tooth plate 9, the end of the carrier plate 5 away from the mounting valve body 6 is fixedly connected to the on-off tube 2, the on-off tube 2 is rotatably connected to the shaft rod 33, the outer wall of the shaft rod 33 is fixedly connected to the valve plate 17, and the valve plate 17 is located in the on-off tube 2, and the end of the shaft rod 33 close to the tooth plate 9 is fixedly connected to the spur gear 7, and The teeth of the spur gear 7 mesh with the teeth of the tooth plate 9; two mounting grooves 18 are symmetrically provided on the on-off tube 2, and a coil spring 19 is fixedly connected in the mounting groove 18; the outer wall of the mounting valve body 6 is fixedly connected to the shell 3, and an air inlet 1 is provided at one end of the shell 3 away from the mounting valve body 6, and a filter is fixedly connected to the inner wall of the air inlet 1; an adsorption box 15 and an electrolyte box 16 are fixedly connected in the shell 3, and electrode plates 32 are fixedly connected on both sides of the electrolyte box 16; a coil groove 13 is provided in the mounting valve body 6, and a coil is fixedly connected in the coil groove 13; and connecting nuts 4 are fixedly connected at both ends of the on-off tube 2.

[0020] In order to improve the safety of the gas safety device, the present invention is provided with a control component, which monitors the gas content in the environment through the electrolyte box 16 provided in the shell 3. The gas and the electrolyte will react chemically to generate current that will flow into the coil. The coil generates magnetic flux that will cause the iron core 14 and the gear plate 9 to move downward together. The gear plate 9 drives the spur gear 7 to drive the valve plate 17 to rotate to cut off the gas supply in the on-off pipe 2.

[0021] Specifically, first, one end of the connecting nuts 4 at both ends of the on-off tube 2 in the gas safety device is connected to the gas main valve, and the other end is connected to the gas using equipment. The activated carbon in the adsorption box 15 will filter the air entering the shell 3. When the air enters the electrolyte box 16, the hydrogen sulfide in the gas will react chemically with the sulfide solid electrolyte to generate current, and the connected wires on the electrode plates 32 on both sides of the electrolyte box 16 are connected to the coil. It is worth noting that in order to prevent the generation of electric sparks at the connection of the coil, a freewheeling diode is connected in parallel at both ends of the coil to provide a path for the self-inductance current in the coil, which can reduce the self-inductance electromotive force.

[0022] Secondly, when the gas leaks, the sulfide solid electrolyte in the electrolyte box 16 reacts chemically with the hydrogen sulfide in the gas to generate current. The generated current is input into the coil through the wire on the electrode plate 32. The increase in the current in the coil will cause the magnetic flux in the coil to increase synchronously, pushing the iron core 14 and the gear plate 9 to move downward synchronously. The rotation of the gear plate 9 will drive the rotation of the spur gear 7, and the rotation of the spur gear 7 will drive the shaft 33 to rotate synchronously. As the shaft 33 rotates, the valve plate 17 rotates to close the on-off pipe 2 and cut off the gas supply in the on-off pipe 2. At the same time, the coil spring 19 is in a gradually released state during the closing process of the valve plate 17. It is worth noting that when the gear plate 9 moves down to the lowest point, the valve plate 17 is It is best to rotate it to completely block the on-off tube 2. At the same time, the current generated on the electrode plate 32 causes the controller to sound an alarm to remind of gas leakage. When the gas leakage is manually handled, the gas content in the air will decrease to zero. At this time, the current on the electrode plate 32 gradually decreases, and the magnetic flux of the coil also decreases. At this time, the iron core 14 and the tooth plate 9 move upward in opposite directions. At this time, the shaft 33 rotates in the opposite direction to gradually open the valve plate 17, and ventilation is gradually restored in the on-off tube 2. At the same time, the coil spring 19 is gradually compressed during the opening process of the valve plate 17. It is worth noting that the controller has been protected at the places where sparks will be generated, and no sparks will appear. The above scheme further improves the safety of the gas safety device.

[0023] refer to Figure 1-Figure 7 , the fixing assembly includes two mounting columns 20 symmetrically mounted on the vertical plate 10, a movable groove 25 is opened in the mounting column 20, a push rod 24 is slidably installed in the movable groove 25, a clamping groove 27 and an unlocking groove 26 are opened in the mounting column 20, a support ring 29 is slidably installed in the clamping groove 27, a plurality of fixing claws 23 are evenly installed on one end of the support ring 29 close to the vertical plate 10, and the plurality of fixing claws 23 are rotatably connected to the support ring 29, the support ring 29 is fixedly connected to the outer wall of the push rod 24, and a plurality of protruding grooves 22 are evenly opened on the surface of the mounting column 20, and The protruding groove 22 is adapted to the fixed claw 23, and the end of the support ring 29 close to the fixed claw 23 is fixedly connected to the arc-shaped extrusion plate 28, and the arc-shaped extrusion plate 28 is adapted to the fixed claw 23. The outer wall of the push rod 24 is fixedly connected to the limit ring 30, and the push rod 24 is provided with a spring 2 31, and the spring 2 31 is located in the unlocking groove 26. The outer wall of the mounting column 20 is fixedly connected to the annular plate 8, and the mounting column 20 is provided with a spring 1 21, and the spring 1 21 is located between the annular plate 8 and the vertical plate 10. The end of the push rod 24 away from the mounting column 20 is fixedly connected to the pressing plate 11.

[0024] In order to improve the convenience of disassembly and assembly of the gas safety device, the present invention is provided with a fixing assembly. By directly inserting the mounting column 20 in the fixing assembly into the hole of the mounting plate, the pressing plate 11 is released and the fixing claws 23 will automatically expand to fix the gas safety device on the mounting plate. If disassembly and maintenance is required, the gas safety device can be disassembled by simply pressing the two pressing plates 11 in the opposite direction and moving them out of the mounting hole, thereby improving the convenience of disassembly and assembly of the gas safety device.

[0025] Specifically, during installation, the two pressing plates 11 are pressed simultaneously so that the fixing claws 23 are retracted into the mounting posts 20 along the extending grooves 22 provided on the mounting posts 20. At this time, the arc-shaped extrusion plates 28 are in a compressed state, so that the two mounting posts 20 can be inserted into the holes provided on the mounting plates. When the extending grooves 22 move to the other side of the mounting plates, the pressing plates 11 are released. At this time, the push rod 24 pushes the support ring 29 to move along the engaging groove 27 under the rebound force of the spring 2 31. At this time, the fixing claws 23 are extended along the extending grooves 22 under the extrusion of the arc-shaped extrusion plates 28. It is worth noting that the support ring 29 is limited in the engaging groove 27. Due to the limiting ring 30 and The support rings 29 are fixedly connected to the outer wall of the push rod 24. When the limit ring 30 moves along the clamping groove 27 to contact the movable groove 25, the support ring 29 stops moving, and the mounting column 20 presses the fixing claw 23 tightly against the mounting plate under the rebound force of the spring 1 21. At this time, the gas safety device is fixedly connected to the mounting plate under the joint extrusion of the two springs 1 21. The fixing claw 23 has been tightly fitted with the extension groove 22 under the extrusion of the arc-shaped extrusion plate 28. The fixing claw 23 is made more stable by the extrusion of the spring 2 31. It is worth noting that when the fixing claw 23 is completely extended from the extension groove 22, the limit ring 30 just contacts the movable groove 25.

[0026] Secondly, during disassembly, the two pressing plates 11 are pressed at the same time, and the push rod 24 moves toward the unlocking groove 26. At the same time, the spring 2 31 in the unlocking groove 26 is gradually compressed. When the support ring 29 moves along the clamping groove 27, the telescopic groove 22 gradually squeezes and contracts the fixed claw 23, and the arc-shaped extrusion plate 28 in contact with the fixed claw 23 is in a compressed state. When the push rod 24 moves along the moving groove 25 to the support ring 29 and contacts the unlocking groove 26, the fixed claw 23 is completely retracted into the mounting column 20 along the extending groove opened on the mounting column 20, and then the mounting column 20 is moved back out of the hole on the mounting plate. It is worth noting that the pressing state needs to be maintained during this period. When the fixed claw 23 is removed from the hole in the mounting plate, the pressing plate 11 can be released to complete the disassembly of the gas safety device, thereby improving the convenience of the device.

[0027] Working principle of the present invention: First, one end of the connecting nuts 4 at both ends of the on-off tube 2 in the gas safety device is connected to the gas main valve, and the other end is connected to the gas using equipment. The activated carbon in the adsorption box 15 will filter the air entering the shell 3. When the air enters the electrolyte box 16, the hydrogen sulfide in the gas will react chemically with the sulfide solid electrolyte to generate current, and the connected wires on the electrode plates 32 on both sides of the electrolyte box 16 are connected to the coil. When the gas leaks, the sulfide solid electrolyte in the electrolyte box 16 reacts chemically with the hydrogen sulfide in the gas to generate current. The generated current is input into the coil through the wire on the electrode plate 32. The increase in the current in the coil will cause the magnetic flux in the coil to increase synchronously, driving The iron core 14 and the tooth plate 9 move downward synchronously. The rotation of the tooth plate 9 drives the rotation of the spur gear 7, and the rotation of the spur gear 7 drives the shaft 33 to rotate synchronously. As the shaft 33 rotates, the valve plate 17 rotates to close the on-off pipe 2 and cut off the gas supply in the on-off pipe 2. At the same time, the coil spring 19 is in a gradually released state during the closing process of the valve plate 17. It is worth noting that when the tooth plate 9 moves down to the lowest point, the valve plate 17 is just rotated to completely block the on-off pipe 2. At the same time, the current generated on the electrode plate 32 causes the controller to sound an alarm to remind gas leakage. When the gas leakage is manually handled, the gas content in the air will decrease to zero. At this time, the current on the electrode plate 32 gradually decreases, and the magnetic flux of the coil also decreases. At this time, the iron core 14 14 and the tooth plate 9 move upward in opposite directions. At this time, the shaft 33 rotates in the opposite direction to gradually open the valve plate 17, and the ventilation in the on-off tube 2 is gradually restored. At the same time, the coil spring 19 is gradually compressed during the opening process of the valve plate 17. During installation, the two pressing plates 11 are pressed at the same time to retract the fixing claws 23 along the extending grooves 22 opened on the mounting post 20 into the mounting post 20. At this time, the arc-shaped extrusion plate 28 is in a compressed state, so that the two mounting posts 20 can be inserted into the holes opened in the mounting plate. When the extending grooves 22 move to the other side of the mounting plate, the pressing plate 11 is released. At this time, the push rod 24 pushes the supporting ring 29 to move along the clamping groove 27 under the rebound force of the spring 21. At this time, the fixing claw 23 is extended along the extending groove 22 under the extrusion of the arc-shaped extrusion plate 28, and the supporting ring 29 is released. The support ring 29 is limited in the clamping groove 27. Since the limiting ring 30 and the support ring 29 are fixedly connected to the outer wall of the push rod 24, when the limiting ring 30 moves along the clamping groove 27 to contact the movable groove 25, the support ring 29 stops moving, and the mounting column 20 presses the fixing claw 23 tightly against the mounting plate under the rebound force of the spring 1 21. At this time, the gas safety device is fixedly connected to the mounting plate under the joint extrusion of the two springs 1 21. The fixing claw 23 has been tightly fitted with the protruding groove 22 under the extrusion of the arc-shaped extrusion plate 28. The fixing claw 23 is more stable through the extrusion of the spring 2 31. When disassembling, the two pressing plates 11 are pressed at the same time, and the push rod 24 moves toward the unlocking groove 26. At the same time, the spring 2 31 in the unlocking groove 26 is gradually compressed.As the support ring 29 moves along the engaging groove 27, the telescopic groove 22 gradually squeezes and contracts the fixed claw 23, and the arc-shaped extrusion plate 28 in contact with the fixed claw 23 is in a compressed state. When the push rod 24 moves along the moving groove 25 until the support ring 29 contacts the unlocking groove 26, the fixed claw 23 is completely retracted into the mounting column 20 along the extension groove provided on the mounting column 20. The mounting column 20 is then moved back out of the hole in the mounting plate. It is worth noting that the pressing state must be maintained during this period. When the fixed claw 23 is removed from the hole in the mounting plate, the pressing plate 11 can be released, and the gas safety device can be disassembled.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas safety device comprising a carrier plate (5) and a vertical plate (10), characterized in that: A control assembly comprises a mounting valve body (6) fixedly connected to the upper surface of a carrier plate (5), a slide groove (12) being provided in the mounting valve body (6), an iron core (14) being slidably connected in the slide groove (12), an end of the iron core (14) away from the mounting valve body (6) being fixedly connected to a tooth plate (9), an end of the carrier plate (5) away from the mounting valve body (6) being fixedly connected to an on-off tube (2), an axle rod (33) being rotatably connected to the on-off tube (2), an outer wall of the axle rod (33) being fixedly connected to a valve plate (17), and the valve plate (17) being located in the on-off tube (2), an end of the axle rod (33) close to the tooth plate (9) being fixedly connected to a spur gear (7), and the teeth of the spur gear (7) being meshed with the teeth of the tooth plate (9); The fixing assembly comprises two mounting columns (20) symmetrically mounted on the vertical plate (10), wherein a movable groove (25) is provided in the mounting columns (20), and a push rod (24) is slidably mounted in the movable groove (25).

2. A gas safety device according to claim 1, characterized in that: Two mounting grooves (18) are symmetrically provided on the on-off tube (2), and a coil spring (19) is fixedly connected in the mounting groove (18).

3. A gas safety device according to claim 1, characterized in that: A snap-fitting groove (27) and an unlocking groove (26) are provided in the mounting column (20), a support ring (29) is slidably installed in the snap-fitting groove (27), a plurality of fixing claws (23) are evenly installed on one end of the support ring (29) close to the vertical plate (10), and the plurality of fixing claws (23) are rotatably connected to the support ring (29), and the support ring (29) is fixedly connected to the outer wall of the push rod (24).

4. A gas safety device according to claim 1, characterized in that: A plurality of protruding grooves (22) are evenly formed on the surface of the mounting column (20), and the protruding grooves (22) are adapted to the fixing claws (23).

5. A gas safety device according to claim 1, characterized in that: The outer wall of the mounting valve body (6) is fixedly connected to a shell (3), an end of the shell (3) away from the mounting valve body (6) is provided with an air inlet (1), and the inner wall of the air inlet (1) is fixedly connected to a filter.

6. A gas safety device according to claim 5, characterized in that: An adsorption box (15) and an electrolyte box (16) are fixedly connected inside the housing (3), and electrode plates (32) are fixedly connected to both sides of the electrolyte box (16).

7. A gas safety device according to claim 1, characterized in that: A coil slot (13) is provided in the mounting valve body (6), and a coil is fixedly connected in the coil slot (13).

8. A gas safety device according to claim 3, characterized in that: An arc-shaped extrusion plate (28) is fixedly connected to one end of the support ring (29) close to the fixed claw (23), and the arc-shaped extrusion plate (28) is adapted to the fixed claw (23). The outer wall of the push rod (24) is fixedly connected to a limiting ring (30).

9. A gas safety device according to claim 1, characterized in that: The push rod (24) is provided with a second spring (31), and the second spring (31) is located in the unlocking groove (26); the outer wall of the mounting column (20) is fixedly connected to the annular plate (8); the mounting column (20) is provided with a first spring (21), and the first spring (21) is located between the annular plate (8) and the vertical plate (10); the end of the push rod (24) away from the mounting column (20) is fixedly connected to the pressing plate (11).

10. A gas safety device according to claim 1, characterized in that: Both ends of the on-off tube (2) are fixedly connected with connecting nuts (4).

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