A new gas butterfly valve

Abstract

The utility model provides a novel gas butterfly valve belongs to gas butterfly valve technical field, including valve body, the one side of valve body is provided with the control mechanism of automatic opening and closing to valve body, the inside of valve body is provided with the sealing assembly of reinforcing the sealingness between control mechanism and valve body. The utility model gas leakage sensor real -time detection valve body around gas concentration, when concentration exceeds setting threshold value, gas leakage sensor sends electric signal to micro motor, and micro motor starts after receiving electric signal, drives the rotation of worm, drives meshed worm wheel rotation, and then makes valve shaft and butterfly board rotate in valve seat, realizes the closing of valve body, and pressure sensor real -time monitoring gas pressure in valve body, if pressure is unusual, pressure sensor sends signal to micro motor, and micro motor drives butterfly board to adjust the opening, and the pressure is balanced, need not manual intervention, avoid missing the best emergency treatment opportunity, improve security.

Description

Technical Field

[0001] This utility model relates to the field of gas butterfly valve technology, and more specifically, to a novel gas butterfly valve. Background Technology

[0002] A gas butterfly valve is a valve body specifically designed to control the flow of gas. It is commonly used in natural gas, liquefied petroleum gas, and other gas transmission and control systems. It mainly regulates gas flow by rotating a butterfly plate within the valve body and features a simple structure, stable operation, and fast response speed.

[0003] A search revealed that Chinese patent CN205401748U discloses "a novel gas butterfly valve, comprising: a valve body, a valve stem disposed within the valve body, a handle disposed on the top of the valve body and connected to the valve stem, a valve disc fixed to the valve stem by a disc screw, and a front end cover disposed on the valve body. The front end cover is fixed to the valve body by an end cover screw, and an opening in the middle of the front end cover that matches the outer wall of the valve disc is provided. This novel gas butterfly valve has a reasonable structural design, is convenient and reliable to operate, simple to disassemble and install, has low maintenance costs, is convenient, practical and efficient, and all indicators during use can reach the technical level of foreign butterfly valves. It can replace imported products and is suitable for further promotion and application." However, it still has the following shortcomings:

[0004] In emergency situations, such as gas pipeline leaks or fires, it is necessary to quickly shut off the gas supply to prevent the accident from escalating. Manual operation of this device requires personnel to be on-site, which leads to response time delays and may cause missed opportunities for optimal emergency response, increasing the severity of the accident. Therefore, a new type of gas butterfly valve is proposed. Utility Model Content

[0005] The purpose of this utility model is to address the problem that in some emergency situations, such as gas pipeline leaks or fires, a new type of gas butterfly valve needs to be quickly shut off to cut off the gas supply and prevent the accident from escalating. The current device requires manual operation, which requires a person to arrive at the scene and perform the operation. This will lead to a delay in response time, which may cause the best emergency response opportunity to be missed and increase the severity of the accident.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] The present invention is as follows: a novel gas butterfly valve, comprising a valve body, wherein a control mechanism for automatically opening and closing the valve body is provided on one side of the valve body, and a sealing component for enhancing the sealing between the control mechanism and the valve body is provided inside the valve body;

[0008] The control mechanism includes a valve seat disposed on the inner wall of the valve body, a valve shaft rotatably connected to the inner wall opposite the valve seat, a butterfly plate fixedly connected to the side wall of the valve shaft, a support rod fixedly connected to the side wall of the valve body, a mounting box fixedly connected to one end of the support rod, a micro motor bolted to the top of the mounting box, a worm gear fixedly connected to the output end of the micro motor, a worm wheel disposed on one side of the worm gear, the worm wheel meshing with the worm gear, the side wall of the worm wheel fixedly connected to one end of the valve shaft, a gas leak sensor disposed on the top of the valve body, and a pressure sensor disposed on the inner top wall of the valve body.

[0009] As a preferred technical solution of this utility model, the sealing assembly includes a sealing layer disposed on the inner wall of the valve seat, a sealing ring disposed on the side wall of the butterfly plate, the sealing ring being tightly fitted with the inner wall of the valve seat, and a sealing element disposed on the outer wall of the valve seat, the sealing element being tightly fitted with the inner wall of the valve body.

[0010] As a preferred technical solution of this utility model, a cavity is formed in the wall of the valve body, and a fireproof layer is provided inside the cavity. The fireproof layer is a ceramic fiber layer.

[0011] As a preferred technical solution of this utility model, an alarm is provided on one side of the top of the mounting box, and the alarm is electrically connected to the gas leak sensor.

[0012] As a preferred technical solution of this utility model, flanges are fixedly connected to the outer walls at both ends of the valve body.

[0013] As a preferred technical solution of this utility model, a connecting rod is coaxially fixedly connected to the bottom of the worm gear, and a rotating handle is fixedly connected to the bottom of the connecting rod.

[0014] As a preferred technical solution of this utility model, a temperature sensor is provided on the inner bottom wall of the valve body, and the temperature sensor is electrically connected to an external controller.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. Through the set control mechanism, the gas leak sensor detects the gas concentration around the valve body in real time. When the concentration exceeds the set threshold, the gas leak sensor sends an electrical signal to the micro motor. After receiving the electrical signal, the micro motor starts and drives the worm gear to rotate. The worm gear drives the meshing worm wheel to rotate, thereby driving the valve shaft and butterfly plate to rotate in the valve seat, realizing the closure of the valve body. At the same time, the pressure sensor monitors the gas pressure inside the valve body in real time. If the pressure is abnormal, the pressure sensor sends a signal to the micro motor. The micro motor drives the butterfly plate to adjust the opening and balance the pressure. The valve body status is automatically adjusted according to the pressure and leakage data without manual intervention, avoiding missing the best emergency handling time and improving safety.

[0017] 2. Through the set sealing components, when the butterfly plate rotates to the closed position, the sealing ring on the side wall of the butterfly plate is tightly fitted with the fluororubber sealing layer on the inner wall of the valve seat, forming the first sealing barrier. As a dynamic sealing element, the sealing ring slides in contact with the inner wall of the valve seat during the rotation of the butterfly plate, further preventing gas leakage from the contact surface, effectively preventing gas leakage, avoiding safety accidents such as explosions and fires, and ensuring the safety of personnel and equipment. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of the novel gas butterfly valve provided by this utility model;

[0019] Figure 2 A schematic diagram of the cavity and fireproof layer structure of the novel gas butterfly valve provided by this utility model;

[0020] Figure 3 A partial structural schematic diagram of the control mechanism of the novel gas butterfly valve provided by this utility model;

[0021] Figure 4 A schematic diagram of the valve shaft, butterfly plate, and pressure sensor structure of the novel gas butterfly valve provided by this utility model;

[0022] Figure 5 A schematic diagram of the sealing assembly structure of the novel gas butterfly valve provided by this utility model.

[0023] The diagram shows: 1. Valve body; 2. Control mechanism; 3. Sealing assembly; 4. Cavity; 5. Fireproof layer; 6. Alarm; 7. Flange; 8. Connecting rod; 9. Rotating handle; 10. Temperature sensor; 201. Valve seat; 202. Valve shaft; 203. Butterfly plate; 204. Support rod; 205. Mounting box; 206. Micro motor; 207. Worm gear; 208. Worm wheel; 209. Gas leak sensor; 210. Pressure sensor; 301. Sealing layer; 302. Sealing ring; 303. Seal. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figure 1 As shown, this embodiment proposes a novel gas butterfly valve, including a valve body 1, a control mechanism 2 for automatically opening and closing the valve body 1 is provided on one side of the valve body 1, and a sealing component 3 for enhancing the sealing between the control mechanism 2 and the valve body 1 is provided inside the valve body 1.

[0029] like Figure 3 and Figure 4As shown, the control mechanism 2 includes a valve seat 201 disposed on the inner wall of the valve body 1. A valve shaft 202 is rotatably connected to the inner wall of the valve seat 201. A butterfly plate 203 is fixedly connected to the side wall of the valve shaft 202. The valve seat 201 provides a mounting base for the valve shaft 202 and the butterfly plate 203, and forms a sealing surface with the butterfly plate 203. The valve shaft 202 rotates to drive the butterfly plate 203 to open or close, thereby regulating or cutting off the flow of gas. A support rod 204 is fixedly connected to the side wall of the valve body 1. One end of the support rod 204 is fixedly connected to a mounting box 205. The support rod 204 provides support for the mounting box 205. A micro motor 206 is bolted to the top of valve body 1. The mounting box 205 provides a protective space for the micro motor 206 and other components, preventing external dust and moisture from entering. A worm gear 207 is fixedly connected to the output end of the micro motor 206. A worm wheel 208 is provided on one side of the worm gear 207, meshing with the worm gear 207. The side wall of the worm wheel 208 is fixedly connected to one end of the valve shaft 202. The worm wheel 208 and the valve shaft 202 are coaxial. The micro motor 206 acts as a power source, driving the worm gear 207 to rotate. Through meshing, the rotational motion of the worm gear 207 is converted into the rotational motion of the worm wheel 208 and the valve shaft 202. The outer wall of valve body 1... A gas leak sensor 209 is installed on the top of the valve body 1, which monitors the gas concentration around the valve body 1 in real time. A pressure sensor 210 is installed on the inner top wall of the valve body 1, which monitors the gas pressure inside the valve body 1 in real time. Both the gas leak sensor 209 and the pressure sensor 210 are connected to a controller outside the cable butterfly valve. The controller is connected to a micro motor 206 via a cable. The gas leak sensor 209 monitors the gas concentration around the valve body 1 in real time. When the concentration exceeds a set threshold, the gas leak sensor 209 sends an electrical signal to the controller. After receiving the electrical signal, the controller starts... The micro motor 206 drives the worm gear 207 to rotate, which in turn drives the meshing worm wheel 208 to rotate. This, in turn, causes the valve shaft 202 and the butterfly plate 203 to rotate within the valve seat 201, thus closing the valve body 1. At the same time, the pressure sensor 210 monitors the gas pressure inside the valve body 1 in real time. If the pressure is abnormal, the pressure sensor 210 sends a signal to the controller. The controller then controls the micro motor 206 to drive the butterfly plate 203 to adjust the opening and balance the pressure. Based on the pressure and leakage data, the controller automatically adjusts the state of the valve body 1 without manual intervention, avoiding missing the best emergency response opportunity and improving safety.

[0030] like Figure 5As shown, the sealing assembly 3 includes a sealing layer 301 disposed on the inner wall of the valve seat 201. The sealing layer 301 is made of fluororubber. The elasticity of the fluororubber sealing layer 301 can compensate for the small gaps between the butterfly plate 203 and the valve seat 201 caused by thermal expansion and contraction over long-term use, ensuring a sealing effect. A sealing ring 302 is disposed on the periphery of the butterfly plate 203. The sealing ring 302 is tightly fitted with the sealing layer 301. During the rotation of the butterfly plate 203, the sealing ring 302 and the sealing layer 301 slide in contact to prevent gas leakage. A sealing element 303 is disposed on the outer wall of the valve seat 201. The sealing element 303 is tightly fitted with the inner wall of the valve body 1. During the gas transmission process, the pressure may fluctuate due to various reasons. When the pressure increases, the gas exerts greater pressure on the valve seat 201 and valve body 1, widening any previously existing tiny gaps and making it easier for the gas to seep into the installation gap. The seal 303 prevents gas leakage from the installation gap between the valve seat 201 and valve body 1. When the butterfly plate 203 rotates to the closed position, the sealing ring 302 on the periphery of the butterfly plate 203 fits tightly against the fluororubber sealing layer 301 on the inner wall of the valve seat 201, forming the first sealing barrier. The sealing ring 302 slides against the inner wall of the valve seat 201 during the rotation of the butterfly plate 203, further preventing gas leakage from the contact surface. This effectively prevents gas leakage, avoids safety accidents such as explosions and fires, and ensures the safety of personnel and equipment.

[0031] like Figure 2 As shown, a cavity 4 is provided inside the wall of the valve body 1, and a fireproof layer 5 is provided inside the cavity 4. The fireproof layer 5 is a ceramic fiber layer. The ceramic fiber fireproof layer 5 has an extremely low thermal conductivity, which can effectively prevent flames or high-temperature gas from being conducted into the valve body 1, and can extend the sealing performance of the valve body 1 for a longer period of time, thus buying time for emergency handling.

[0032] like Figure 1 As shown, an alarm 6 is installed on one side of the top of the mounting box 205. The alarm 6 is electrically connected to the controller. The gas leak sensor 209 can monitor the gas concentration in the surrounding environment in real time. Once the gas concentration exceeds the set safety threshold, the gas leak sensor 209 converts the monitored data into an electrical signal and transmits it to the controller. The controller then controls the alarm 6 to start. After receiving the electrical signal from the controller, the alarm 6 will quickly emit a loud alarm sound to attract the attention of people in the vicinity and remind them of the potential danger of gas leak, so that they can take timely measures.

[0033] like Figure 1 As shown, flanges 7 are fixedly connected to the outer walls at both ends of the valve body 1. The flanges 7 can be standardized to connect with gas pipelines that also have flanges 7, ensuring the accuracy and interchangeability of the connection.

[0034] like Figure 1As shown, a connecting rod 8 is coaxially fixedly connected to the bottom of the worm gear 207, and a rotating handle 9 is fixedly connected to the bottom of the connecting rod 8. When the micro motor 206 fails to work properly, the rotating handle 9 can be used as a backup operation mode to ensure that the valve body 1 can still be operated and to ensure system safety.

[0035] like Figure 1 As shown, a temperature sensor 10 is installed on the inner bottom wall of the valve body 1. The temperature sensor 10 is electrically connected to an external controller. During the gas transportation process, the temperature will change. Excessive or insufficient temperature may affect the sealing performance and material properties of the valve body 1. The temperature sensor 10 can monitor the gas temperature in real time and provide data support for the evaluation of the operating status of the valve body 1.

[0036] Specifically, in use, the new gas butterfly valve works as follows: the gas leak sensor 209 detects the gas concentration around the valve body 1 in real time. When the concentration exceeds a set threshold, the gas leak sensor 209 sends an electrical signal to the controller, which in turn sends an electrical signal to the micro motor 206. Upon receiving the electrical signal, the micro motor 206 starts, driving the worm gear 207 to rotate. The worm gear 207 drives the meshing worm wheel 208 to rotate, thereby causing the valve shaft 202 and the butterfly plate 203 to rotate within the valve seat 201, thus closing the valve body 1. Simultaneously, the pressure sensor 210 monitors the gas pressure inside the valve body 1 in real time. If the pressure is abnormal, the pressure sensor 210 sends an electrical signal to the controller, which in turn sends an electrical signal to the micro motor 206. The micro motor 206 drives the butterfly plate 203 to adjust the opening and balance the pressure. Based on the pressure and leak data, the valve body 1 state is automatically adjusted (e.g., ...). Figure 3 and Figure 4 As shown), when the butterfly plate 203 rotates to the closed position, the sealing ring 302 on the side wall of the butterfly plate 203 tightly adheres to the fluororubber sealing layer 301 on the inner wall of the valve seat 201, forming the first sealing barrier. The sealing ring 302, acting as a dynamic seal 303, slides against the inner wall of the valve seat 201 during the rotation of the butterfly plate 203, further preventing gas leakage from the contact surface and effectively stopping gas leakage (e.g., Figure 5 (As shown).

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A novel gas butterfly valve, comprising a valve body (1), characterized in that, A control mechanism (2) for automatically opening and closing the valve body (1) is provided on one side of the valve body (1), and a sealing component (3) for enhancing the sealing between the control mechanism (2) and the valve body (1) is provided inside the valve body (1). The control mechanism (2) includes a valve seat (201) disposed on the inner wall of the valve body (1), a valve shaft (202) rotatably connected to the inner wall opposite the valve seat (201), a butterfly plate (203) fixedly connected to the side wall of the valve shaft (202), a support rod (204) fixedly connected to the side wall of the valve body (1), a mounting box (205) fixedly connected to one end of the support rod (204), and a micro motor bolted to the top of the mounting box (205). 206), the output end of the micro motor (206) is fixedly connected to a worm (207), a worm wheel (208) is provided on one side of the worm (207), the worm wheel (208) meshes with the worm (207), the side wall of the worm wheel (208) is fixedly connected to one end of the valve shaft (202), a gas leak sensor (209) is provided on the top of the valve body (1), and a pressure sensor (210) is provided on the inner top wall of the valve body (1).

2. The novel gas butterfly valve according to claim 1, characterized in that, The sealing assembly (3) includes a sealing layer (301) disposed on the inner wall of the valve seat (201), a sealing ring (302) disposed on the side wall of the butterfly plate (203), the sealing ring (302) being tightly fitted to the inner wall of the valve seat (201), and a sealing element (303) disposed on the outer wall of the valve seat (201), the sealing element (303) being tightly fitted to the inner wall of the valve body (1).

3. The novel gas butterfly valve according to claim 1, characterized in that, The valve body (1) has a cavity (4) inside its wall, and a fireproof layer (5) is provided inside the cavity (4). The fireproof layer (5) is a ceramic fiber layer.

4. A novel gas butterfly valve according to claim 1, characterized in that, An alarm (6) is provided on one side of the top of the mounting box (205), and the alarm (6) is electrically connected to the gas leak sensor (209).

5. A novel gas butterfly valve according to claim 1, characterized in that, Flanges (7) are fixedly connected to the outer walls at both ends of the valve body (1).

6. A novel gas butterfly valve according to claim 1, characterized in that, The bottom of the worm gear (207) is coaxially fixedly connected to a connecting rod (8), and the bottom of the connecting rod (8) is fixedly connected to a rotating handle (9).

7. A novel gas butterfly valve according to claim 1, characterized in that, A temperature sensor (10) is provided on the inner bottom wall of the valve body (1), and the temperature sensor (10) is electrically connected to an external controller.

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