Natural gas emergency shut-off valve coil

Abstract

This utility model provides a natural gas emergency shut-off valve coil, including an insulating shell and a shut-off valve body. The insulating shell is installed on the upper end of the shut-off valve body, and an insulating frame is built into the insulating shell. A coil is wound around the outside of the insulating frame, and a fixed iron core is installed at the upper end inside the insulating frame. The movable end of the fixed iron core is connected to a spring, and the movable end of the spring is connected to a moving iron core. This design solves the problems of poor heat dissipation of the coil and the inability to feed back its own status to the control system in existing natural gas emergency shut-off valves, resulting in low intelligence. This utility model adopts an intelligent real-time detection device, which can detect the coil temperature in real time and feed it back to the PLC control panel. In this way, water cooling is used to circulate heat and reduce the coil temperature.

Description

Technical Field

[0001] This utility model is a natural gas emergency shut-off valve coil, belonging to the technical field of natural gas shut-off valves. Background Technology

[0002] Natural gas emergency shut-off valves are critical safety devices in residential and commercial gas systems. Their core actuation component is typically an electromagnetic coil (solenoid). A known structure involves a coil frame mounted on the valve body, with numerous enameled wires wound around it, and an internal movable ferromagnetic valve core (armature). When energized, the coil generates a magnetic field, attracting the valve core and opening or closing the valve.

[0003] However, most shut-off valves are "normally closed," meaning the coil needs to be energized continuously to keep the valve open. This causes the coil to heat up continuously, accelerating the aging of the insulation layer and posing a risk of burning out the coil or even causing a fire. The power consumption is also high. Furthermore, the coil is merely a passive actuator and cannot provide feedback on its own status (such as whether it is energized, whether the temperature is too high, or whether it has activated) to the control system, resulting in low intelligence. There is an urgent need for natural gas emergency shut-off valve coils to address these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a natural gas emergency shut-off valve coil to solve the problems mentioned in the background. This invention employs an intelligent real-time detection device that can detect the coil temperature in real time and feed it back to the PLC control panel, thereby reducing the coil temperature through water cooling circulation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a natural gas emergency shut-off valve coil, comprising an insulating shell and a shut-off valve body. The insulating shell is installed on the upper end of the shut-off valve body. An insulating frame is built into the insulating shell, and a coil is wound around the outside of the insulating frame. A fixed iron core is installed at the upper end of the inner part of the insulating frame. The movable end of the fixed iron core is connected to a spring, and the movable end of the spring is connected to a moving iron core. A valve core is connected to the lower end of the moving iron core. Multiple thermally conductive silicone rubbers are embedded at equal angles along the inner edge of the insulating shell. One of these thermally conductive silicone rubbers has N-type silicone rubbers embedded at both its upper and lower ends. The TC temperature sensor has multiple heat dissipation fins installed at the connection points between multiple thermally conductive silicone pads and multiple insulating shells. A thermally conductive copper tube runs through the heat dissipation fins. A connecting backplate is attached to the front end of the insulating shell. A PLC control panel is installed at the front end of the connecting backplate. A return water tank and a supply water tank are installed on the left and right ends of the PLC control panel, respectively. A circulation pump is installed between the outlet end of the return water tank and the inlet end of the supply water tank. A supply water pump is installed at the upper end of the supply water tank. A micro servo motor is installed on the upper left side of the shut-off valve body. A butterfly valve is installed longitudinally on the left end inside the shut-off valve body.

[0006] Furthermore, the shut-off valve body has a built-in on / off plate, and an on / off groove is provided in the middle of the on / off plate, and the valve core is inserted into the on / off groove.

[0007] Furthermore, the upper end of the return water tank is connected to the liquid outlet end of the heat-conducting copper pipe via a return water pipe.

[0008] Furthermore, the water supply pump is connected to the inlet end of the heat-conducting copper pipe.

[0009] Furthermore, the shaft end of the micro servo motor is connected to the butterfly valve.

[0010] Furthermore, the PLC control panel is connected to the coil, two NTC temperature sensors, a circulating pump, a micro servo motor, and a water supply pump via wires.

[0011] The beneficial effects of this utility model are as follows: The natural gas emergency shut-off valve coil of this utility model has a reasonable structure due to the addition of thermally conductive silicone, NTC temperature sensor, heat dissipation fins, thermally conductive copper pipe, return water pipe, return water tank, circulation pump, supply water tank, supply water pump, PLC control panel, micro servo motor and butterfly valve. It adopts intelligent real-time detection equipment to detect the coil temperature in real time and feed it back to the PLC control panel. Water cooling is then used to dissipate heat and circulate the coil, thereby reducing the coil temperature. In addition, with the backup transmission closure structure, it can perform emergency shut-off when the coil fails, making it highly practical. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the structure of the natural gas emergency shut-off valve coil of this utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the natural gas emergency shut-off valve coil of this utility model;

[0015] Figure 3 This is a schematic diagram of the disassembly structure of the connecting back plate of the natural gas emergency shut-off valve coil of this utility model.

[0016] In the diagram: 1-Insulating shell, 2-Coil, 3-Insulating frame, 4-Fixed iron core, 5-Thermoconductive silicone, 6-NTC temperature sensor, 7-Heat dissipation fins, 8-Thermoconductive copper pipe, 9-Return water pipe, 10-Return water tank, 11-Circulating pump, 12-Supply water tank, 13-Supply water pump, 14-PLC control panel, 15-Shut-off valve body, 16-Spring, 17-Moving iron core, 18-Valve core, 19-Micro servo motor, 20-Butterfly valve, 21-Connecting backplate. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-3 This utility model provides a technical solution: a natural gas emergency shut-off valve coil, including an insulating shell 1 and a shut-off valve body 15. The insulating shell 1 is installed on the upper end of the shut-off valve body 15. The insulating shell 1 has an internal insulating frame 3, and a coil 2 is wound around the outside of the insulating frame 3. A fixed iron core 4 is installed at the upper end of the inner part of the insulating frame 3. The movable end of the fixed iron core 4 is connected to a spring 16. The movable end of the spring 16 is connected to a moving iron core 17. A valve core 18 is connected to the lower end of the moving iron core 17. Multiple thermally conductive silicone rubbers 5 are embedded at equal angles on the inner edge of the insulating shell 1. An NTC temperature sensor 6 is embedded at both the upper and lower ends of one of the thermally conductive silicone rubbers 5. Multiple heat sinks are installed through the connection points between the multiple thermally conductive silicone rubbers 5 and the multiple insulating shells 1. A heat-conducting copper pipe 8 runs through the fins 7 and multiple heat dissipation fins 7. A connecting back plate 21 is attached to the front end of the insulating shell 1. A PLC control panel 14 is installed at the front end of the connecting back plate 21. A return water tank 10 and a supply water tank 12 are installed on the left and right ends of the PLC control panel 14, respectively. A circulation pump 11 is installed between the outlet end of the return water tank 10 and the inlet end of the supply water tank 12. A supply water pump 13 is installed at the upper end of the supply water tank 12. A micro servo motor 19 is installed on the left side of the upper end of the shut-off valve body 15. A butterfly valve 20 is installed longitudinally on the left end inside the shut-off valve body 15. This design solves the problems of poor heat dissipation of the coil and the inability to feed back its own status to the control system in the existing natural gas emergency shut-off valve, resulting in low intelligence.

[0019] As the first embodiment of this utility model: the shut-off valve body 15 has a built-in on / off plate with an on / off groove in the middle, and the valve core 18 is inserted into the on / off groove. The upper end of the return water tank 10 is connected to the liquid outlet of the heat-conducting copper pipe 8 through the return water pipe 9. The setting of the return water tank 10 facilitates the recovery of the liquid that has undergone heat exchange in the heat-conducting copper pipe 8. The water supply pump 13 is connected to the liquid inlet of the heat-conducting copper pipe 8. The added water supply pump 13 can provide coolant to the heat-conducting copper pipe 8, so that the heat-conducting copper pipe 8 can efficiently dissipate heat between itself and the heat dissipation fins 7 by utilizing its own material properties. The shaft end of the micro servo motor 19 is connected to the butterfly valve 20. The added micro servo motor 19 is controlled by the PLC control panel 14 to drive the butterfly valve 20 to start, stop and rotate. The PLC control panel 14 is connected to the coil 2, two NTC temperature sensors 6, circulation pump 11, micro servo motor 19 and water supply pump 13 via wires. The PLC control panel 14, coil 2, two NTC temperature sensors 6, circulation pump 11, micro servo motor 19 and water supply pump 13 are all existing and well-known devices, and their control principles are not described.

[0020] As a second embodiment of this utility model: the PLC control panel 14 controls the on / off state of the coil 2, which drives the moving iron core 17 to move within the insulating frame 3, thereby opening or closing the valve core 18 to the shut-off valve body 15. When the coil 2 is working and generating heat, multiple thermally conductive silicone 5 conducts heat to it and transfers it to multiple heat dissipation fins 7. Two NTC temperature sensors 6 detect the temperature in real time and feed it back to the PLC control panel 14. When the temperature at the detected point is high, the PLC control panel 14 controls the water supply pump 13 to work, which draws out the coolant from the water supply tank 12 and supplies it to the thermally conductive copper pipe 8. This allows the thermally conductive copper pipe 8 to efficiently dissipate heat between itself and the heat dissipation fins 7 using its own material properties, thereby cooling the coil 2. Then, the liquid that has undergone heat exchange returns to the return water tank 10, and the coil... 2. When a problem or failure occurs, the PLC control panel 14 senses the current fluctuation. The PLC control panel 14 starts the micro servo motor 19 through programming, so that the micro servo motor 19 drives the butterfly valve 20 to block and cut off the left end of the valve body 15, thereby realizing the emergency cut-off of the valve body 15. The standard parts used in this utility model can all be purchased from the market. The irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology. In addition, the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A natural gas emergency shut-off valve coil, comprising an insulating housing (1) and a shut-off valve body (15), characterized in that: The insulating shell (1) is installed on the upper end of the shut-off valve body (15). The insulating shell (1) has an internal insulating frame (3). A coil (2) is wound around the outside of the insulating frame (3). A fixed iron core (4) is installed at the upper end of the inner part of the insulating frame (3). The movable end of the fixed iron core (4) is connected to a spring (16). The movable end of the spring (16) is connected to a moving iron core (17). A valve core (18) is connected to the lower end of the moving iron core (17). Multiple thermally conductive silicone rubbers (5) are embedded at equal angles on the inner edge of the insulating shell (1). An NTC temperature sensor (6) is embedded at both the upper and lower ends of one of the thermally conductive silicone rubbers (5). The connection points between the multiple thermally conductive silicone rubbers (5) and the multiple insulating shells (1) are all through. Multiple heat dissipation fins (7) are installed, and heat-conducting copper pipes (8) are provided between the multiple heat dissipation fins (7). A connecting back plate (21) is glued to the front end of the insulating shell (1). A PLC control panel (14) is installed at the front end of the connecting back plate (21). A return water tank (10) and a supply water tank (12) are installed on the left and right ends of the PLC control panel (14), respectively. A circulation pump (11) is installed between the outlet end of the return water tank (10) and the inlet end of the supply water tank (12). A supply water pump (13) is installed at the upper end of the supply water tank (12). A micro servo motor (19) is installed on the left side of the upper end of the shut-off valve body (15). A butterfly valve (20) is installed longitudinally on the left end inside the shut-off valve body (15).

2. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The shut-off valve body (15) has a built-in shut-off plate, and a shut-off groove is provided in the middle of the shut-off plate, and the valve core (18) is inserted into the shut-off groove.

3. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The upper end of the return water tank (10) is connected to the liquid outlet of the heat-conducting copper pipe (8) through the return water pipe (9).

4. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The water supply pump (13) is connected to the inlet end of the heat-conducting copper pipe (8).

5. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The shaft end of the micro servo motor (19) is connected to the butterfly valve (20).

6. The natural gas emergency shut-off valve coil according to claim 1, characterized in that: The PLC control panel (14) is connected to the coil (2), two NTC temperature sensors (6), the circulating pump (11), the micro servo motor (19), and the water supply pump (13) via wires.

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