Explosion-proof heater for gas pressure regulation and pressure regulation system

Abstract

The utility model provides an anti-explosion heater for gas pressure regulation and a pressure regulation system, and relates to the field of gas pressure regulation devices. An explosion-proof heater for gas pressure regulation comprises a shell and an explosion-proof junction box, the shell is filled with heat conduction materials, heating pipes and gas conveying pipes are embedded in the heat conduction materials and are arranged at intervals, the gas conveying pipes are distributed in a spiral winding mode, the two ends of each gas conveying pipe extend out of the shell, and the explosion-proof junction box is arranged in the shell. One end of the gas conveying pipe is communicated with the gas inlet pipe, and the other end of the gas conveying pipe is communicated with the gas outlet pipe; the heating pipe is electrically connected with the anti-explosion junction box, the anti-explosion junction box is further electrically connected with a temperature measuring probe, and one end, away from the anti-explosion junction box, of the temperature measuring probe extends into the heat conduction material in the shell. The J-T effect of the gas after pressure regulation can be effectively avoided, and meanwhile explosion caused by sparks or high temperature is avoided.

Description

Technical Field

[0001] This application relates to the field of gas pressure regulating devices, and more specifically, to an explosion-proof heater and a pressure regulating system for gas pressure regulation. Background Art

[0002] In ultra-high purity gas equipment, it is necessary to regulate the gas pressure from the gas cylinder to the required supply pressure. The pressure reducing valve is used for pressure reduction. As the high-pressure gas continuously flows from the high-pressure end to the low-pressure end, gas expansion occurs, generating the J-T effect. This effect will cause the temperature of the gas at the low-pressure end to drop sharply, resulting in liquefaction of the gas in the pipeline and generation of high-pressure water vapor. Generally, after gas pressure regulation, it is heated by a heater to keep the temperature stable, and the temperature difference before and after is controlled within a certain range, which can well avoid the J-T effect.

[0003] However, some gases are flammable and explosive, and conventional heaters are prone to explosion if the heating temperature is too high. Utility Model Content

[0004] The purpose of this application is to provide an explosion-proof heater and a pressure regulating system for gas pressure regulation to improve the technical problems that the J-T effect is likely to occur after current gas pressure regulation and conventional heaters are prone to explosion if the heating temperature is too high.

[0005] In a first aspect, an embodiment of this application provides an explosion-proof heater for gas pressure regulation, including a housing and an explosion-proof junction box. The housing is filled with a heat-conducting material, and a heating pipe and a gas delivery pipe are embedded in the heat-conducting material. The heating pipe and the gas delivery pipe are arranged at intervals. The gas delivery pipe is spirally coiled and distributed. Both ends of the gas delivery pipe extend out of the housing. One end of the gas delivery pipe is connected to the inlet pipe in a communicating manner, and the other end of the gas delivery pipe is connected to the outlet pipe in a communicating manner; the heating pipe is electrically connected to the explosion-proof junction box, and the explosion-proof junction box is also electrically connected to a temperature measuring probe. The end of the temperature measuring probe far from the explosion-proof junction box extends into the heat-conducting material inside the housing.

[0006] In the above implementation process, this application fills the housing with a heat-conducting material, and the heating pipe and the gas delivery pipe are embedded at intervals in the heat-conducting material. The gas output from the outlet end of the pressure reducing valve outside is transported into the gas delivery pipe through the inlet pipe. The heating pipe generates heat and transfers the heat to the heat-conducting material, and the heat-conducting material then transfers the heat to heat the gas in the gas delivery pipe, so as to avoid the J-T effect generated after the high-pressure gas is decompressed and prevent the gas from liquefying and generating water vapor; and the heat-conducting material transfers the heat to heat the gas in the gas delivery pipe more gently; at the same time, by setting the temperature measuring probe and the explosion-proof junction box, the temperature inside the housing can be monitored in real time to prevent explosion caused by sparks or high temperatures.

[0007] In a possible implementation, the gas delivery pipe includes a first gas delivery pipe and a second gas delivery pipe, which are spirally wound and distributed in sequence from top to bottom; both ends of the first gas delivery pipe and the second gas delivery pipe extend out of the housing. One end of the first gas delivery pipe is connected to the first intake pipe in a communicating manner, the other end of the first gas delivery pipe is connected to the first outlet pipe in a communicating manner, one end of the second gas delivery pipe is connected to the second intake pipe in a communicating manner, and the other end of the second gas delivery pipe is connected to the second outlet pipe in a communicating manner.

[0008] In this application, by providing the first gas delivery pipe and the second gas delivery pipe, the gas output from the outlet end of the first pressure regulator externally is transported into the first gas delivery pipe through the first intake pipe to heat the gas after the first pressure regulation; the gas after the first heating is output from the first outlet pipe and undergoes secondary pressure regulation through the second pressure regulator from the intake end of the second pressure regulator. The gas after the secondary pressure regulation is then output from the outlet end of the second pressure regulator to the second intake pipe and transported into the second gas delivery pipe to heat the gas after the second pressure regulation; by regulating the gas in two stages, it is more conducive to regulating the gas to the target pressure, and by dividing the pressure regulation into two times, the pressure difference for each pressure regulation will not be too large, reducing the J-T effect generated after gas pressure regulation to a certain extent. At the same time, the gas is heated both times after gas pressure regulation, further avoiding the J-T effect generated after gas pressure regulation.

[0009] In a possible implementation, the heating pipe is of a U-shaped structure, and the first gas delivery pipe and the second gas delivery pipe are spirally wound around the outer periphery of the heating pipe in sequence from top to bottom.

[0010] In this application, by providing a U-shaped heating pipe and spirally winding the first gas delivery pipe and the second gas delivery pipe around the outer periphery of the heating pipe, the heating pipe can transfer heat to the first gas delivery pipe and the second gas delivery pipe evenly and efficiently; at the same time, the spirally wound first gas delivery pipe and second gas delivery pipe can increase the heating time and heating area of the gas, enabling the gas to be fully heated.

[0011] In a possible implementation, the explosion-proof junction box includes a box body, and a power interface is provided on the box body, and the power interface is electrically connected to the heating pipe.

[0012] In this application, the power interface is electrically connected to the heating pipe to control the switch of the heating pipe as needed.

[0013] In a possible implementation, an explosion-proof switch is provided inside the box body, and the explosion-proof switch is electrically connected to the power interface.

[0014] In this application, by providing the explosion-proof switch electrically connected to the power interface, the power can be controlled to be turned off by controlling the explosion-proof switch to be turned off, thereby controlling the heating pipe to be turned off and stopping heating, avoiding explosion due to excessive temperature.

[0015] In a possible implementation, a signal interface is further provided on the box body. The signal interface is electrically connected to the temperature measuring probe, and a control device is electrically connected to the outside of the signal interface. The control device is also electrically connected to the explosion-proof switch.

[0016] In this application, the temperature measuring probe is used to detect the temperature inside the housing. The detected temperature signal is transmitted to the control device. When the temperature is too high, the control device can control the explosion-proof switch to close, so as to control the power supply to turn off, thereby controlling the heating tube to turn off and stop heating, avoiding explosion due to too high temperature.

[0017] In a possible implementation, three temperature measuring probes are embedded in the heat-conducting material, and the three temperature measuring probes are distributed at intervals.

[0018] In this application, by arranging three temperature measuring probes at intervals in the heat-conducting material, the temperature in the heat-conducting material can be detected more evenly and comprehensively, the temperature can be detected in real time, and explosion due to too high temperature can be avoided.

[0019] In a possible implementation, a heat-insulating layer is provided on the inner wall of the housing.

[0020] In this application, by providing a heat-insulating layer on the inner wall of the housing, the temperature inside the housing can be maintained, and the heat loss inside the housing can be effectively reduced.

[0021] In a second aspect, an embodiment of this application provides a pressure regulating system, which includes a pressure regulating valve and the explosion-proof heater for gas pressure regulation provided in the first aspect. The air outlet end of the pressure regulating valve is communicated with the inlet pipe.

[0022] In this application, by communicating the air outlet end of the pressure regulating valve with the inlet pipe, the regulated gas can be transported through the inlet pipe into the gas delivery pipe to heat the regulated gas, avoiding the J-T effect after gas pressure regulation and avoiding the liquefaction of gas to generate water vapor.

[0023] In a third aspect, an embodiment of this application provides a pressure regulating system, which includes a first pressure regulating valve, a second pressure regulating valve and the explosion-proof heater for gas pressure regulation provided in the first aspect. The air outlet end of the first pressure regulating valve is communicated with the first inlet pipe, the first outlet pipe is communicated with the air inlet end of the second pressure regulating valve, and the air outlet end of the second pressure regulating valve is communicated with the second inlet pipe.

[0024] In this application, by connecting the air outlet end of the first pressure regulating valve to the first inlet pipe, the first outlet pipe to the air inlet end of the second pressure regulating valve, and the air outlet end of the second pressure regulating valve to the second inlet pipe, the gas that has been pressure-regulated for the first time by the first pressure regulating valve can be transported into the first gas transport pipe through the first inlet pipe for heating. Then, the heated gas in the first gas transport pipe is output from the first outlet pipe to the second pressure regulating valve and is pressure-regulated for the second time by the second pressure regulating valve. The gas after the second pressure regulation is transported into the second gas transport pipe through the second inlet pipe for heating. By regulating the pressure of the gas in two stages, it is more conducive to regulating the gas to the target pressure. Moreover, by dividing the pressure regulation into two times, the pressure difference for each pressure regulation will not be too large, which can reduce the J-T effect generated after gas pressure regulation to a certain extent. At the same time, the gas is heated both times after pressure regulation, further avoiding the J-T effect generated after gas pressure regulation and preventing the gas from liquefying to produce water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the pressure regulating system provided by the embodiment of the present application.

[0027] Figure 2 It is a sectional view of the explosion-proof heater for gas pressure regulation provided by the embodiment of the present application.

[0028] Reference numerals: 1 - explosion-proof heater for gas pressure regulation; 11 - housing; 111 - heat-conducting material; 112 - heating pipe; 113 - gas transport pipe; 1131 - first gas transport pipe; 1132 - second gas transport pipe; 114 - inlet pipe; 1141 - first inlet pipe; 1142 - second inlet pipe; 115 - outlet pipe; 1151 - first outlet pipe; 1152 - second outlet pipe; 116 - heat-insulating layer; 12 - explosion-proof junction box; 121 - temperature measuring probe; 122 - power supply interface; 123 - signal interface; 2 - pressure regulating system; 21 - pressure regulating valve; 211 - first pressure regulating valve; 212 - second pressure regulating valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Components of the embodiments of this application generally described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0031] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0032] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is customarily placed during use. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Embodiment

[0036] At present, high-purity gas needs to be regulated to the required supply pressure and output from the cylinder. However, when high-pressure gas is decompressed and flows from the high-pressure end to the low-pressure end, the J-T effect is likely to occur, causing the gas temperature to drop sharply, liquefying the gas and generating water vapor. Generally, after gas pressure regulation, it is heated by a heater, which can well avoid the J-T effect. However, some gases are flammable and explosive, and if the conventional heater is heated to too high a temperature, it is likely to cause an explosion.

[0037] This application aims to improve the technical problems that the J-T effect is likely to occur after the current gas pressure regulation, and the conventional heater is likely to cause an explosion if the heating temperature is too high, and proposes a pressure regulation system 2, as Figure 1 shown, which includes a pressure regulating valve 21 and an explosion-proof heater 1 for gas pressure regulation. The air outlet end of the pressure regulating valve 21 is connected to the inlet pipe 114.

[0038] Connecting the air outlet end of the pressure regulating valve 21 to the inlet pipe 114 can enable the regulated gas to be transported through the inlet pipe 114 into the explosion-proof heater 1 for gas pressure regulation to heat the regulated gas, avoid the J-T effect after gas pressure regulation, and avoid the gas from liquefying and generating water vapor; at the same time, the explosion-proof heater 1 for gas pressure regulation can effectively prevent sparks or high temperatures from causing an explosion.

[0039] An embodiment of this application also provides a pressure regulation system 2, as Figure 1 shown, which includes a first pressure regulating valve 211, a second pressure regulating valve 212 and an explosion-proof heater 1 for gas pressure regulation. The air outlet end of the first pressure regulating valve 211 is connected to the first inlet pipe 1141, the first outlet pipe 1151 is connected to the air inlet end of the second pressure regulating valve 212, and the air outlet end of the second pressure regulating valve 212 is connected to the second inlet pipe 1142.

[0040] During use, the gas regulated by the first pressure regulating valve 211 is transported from the air outlet end through the first inlet pipe 1141 into the explosion-proof heater 1 for gas pressure regulation for heating, and then the heated gas is output from the first outlet pipe 1151 to the second pressure regulating valve 212, and then undergoes secondary pressure regulation by the second pressure regulating valve 212. The gas after secondary pressure regulation is transported through the second inlet pipe 1142 into the explosion-proof heater 1 for gas pressure regulation for heating; by regulating the gas in two stages, it is more conducive to regulating the gas to the target pressure, and by dividing the pressure regulation into two times, the pressure difference for each pressure regulation will not be too large, which reduces the J-T effect generated after gas pressure regulation to a certain extent. At the same time, the gas is heated after being regulated twice, further avoiding the J-T effect after gas pressure regulation and avoiding the gas from liquefying and generating water vapor; at the same time, the explosion-proof heater 1 for gas pressure regulation can effectively prevent sparks or high temperatures from causing an explosion.

[0041] As Figure 1 - Figure 2As shown, the explosion-proof heater 1 for gas pressure regulation includes a housing 11 and an explosion-proof junction box 12. The housing 11 is filled with a heat-conducting material 111, in which a heating pipe 112 and a gas delivery pipe 113 are embedded. The heating pipe 112 and the gas delivery pipe 113 are arranged at intervals. The gas delivery pipe 113 is spirally coiled. Both ends of the gas delivery pipe 113 extend out of the housing 11. One end of the gas delivery pipe 113 is connected to an intake pipe 114 in a communicating manner, and the other end of the gas delivery pipe 113 is connected to an outlet pipe 115 in a communicating manner. The heating pipe 112 is electrically connected to the explosion-proof junction box 12, and the explosion-proof junction box 12 is also electrically connected to a temperature measuring probe 121. One end of the temperature measuring probe 121 away from the explosion-proof junction box 12 extends into the heat-conducting material 111 inside the housing 11.

[0042] The housing 11 is filled with the heat-conducting material 111, in which the heating pipe 112 and the gas delivery pipe 113 are embedded at intervals. The gas output from the outlet end of the pressure regulating valve 21 outside is transported into the gas delivery pipe 113 through the intake pipe 114. The heating pipe 112 generates heat and transfers it to the heat-conducting material 111, and the heat-conducting material 111 then transfers the heat to heat the gas in the gas delivery pipe 113, so as to avoid the J-T effect generated after the high-pressure gas is decompressed and prevent the gas from liquefying to generate water vapor. Moreover, heating the gas in the gas delivery pipe 113 by transferring heat through the heat-conducting material 111 is more gentle. At the same time, by providing the temperature measuring probe 121 and the explosion-proof junction box 12, the temperature inside the housing 11 can be monitored in real time to prevent explosion caused by sparks or high temperature. Exemplarily, the heat-conducting material 111 can be, but is not limited to, aluminum.

[0043] It should be noted that all components in the explosion-proof heater 1 for gas pressure regulation are made of explosion-proof materials, which further ensures the explosion-proof performance of the explosion-proof heater 1 for gas pressure regulation.

[0044] In some embodiments, the gas delivery pipe 113 includes a first gas delivery pipe 1131 and a second gas delivery pipe 1132. The first gas delivery pipe 1131 and the second gas delivery pipe 1132 are spirally coiled in sequence from top to bottom. Both ends of the first gas delivery pipe 1131 and the second gas delivery pipe 1132 extend out of the housing 11. One end of the first gas delivery pipe 1131 is connected to a first intake pipe 1141 in a communicating manner, the other end of the first gas delivery pipe 1131 is connected to a first outlet pipe 1151 in a communicating manner, one end of the second gas delivery pipe 1132 is connected to a second intake pipe 1142 in a communicating manner, and the other end of the second gas delivery pipe 1132 is connected to a second outlet pipe 1152 in a communicating manner.

[0045] The gas output from the external outlet of the first pressure regulating valve 211 is transported into the first gas delivery pipe 1131 through the first inlet pipe 1141 to heat the gas after the first pressure regulation; the gas after the first heating is output from the first outlet pipe 1151, and is secondarily pressure-regulated through the second pressure regulating valve 212 from the inlet end of the second pressure regulating valve 212. The gas after the secondary pressure regulation is then output from the outlet end of the second pressure regulating valve 212 to the second inlet pipe 1142 and transported into the second gas delivery pipe 1132 to heat the gas after the secondary pressure regulation; by pressure-regulating the gas in two stages, it is more conducive to regulating the gas to the target pressure, and the pressure is divided into two pressure regulations, and the pressure difference of each pressure regulation will not be too large, which reduces the J-T effect generated after the gas pressure regulation to a certain extent. At the same time, the gas is heated after being pressure-regulated twice, further avoiding the J-T effect generated after the gas pressure regulation.

[0046] In some embodiments, the heating pipe 112 is of a U-shaped structure, and the first gas delivery pipe 1131 and the second gas delivery pipe 1132 are spirally wound around the outer periphery of the heating pipe 112 in sequence from top to bottom. By setting the U-shaped heating pipe 112, and the first gas delivery pipe 1131 and the second gas delivery pipe 1132 are spirally wound around the outer periphery of the heating pipe 112, the heating pipe 112 can transfer heat to the first gas delivery pipe 1131 and the second gas delivery pipe 1132 evenly and efficiently; at the same time, the spirally wound first gas delivery pipe 1131 and second gas delivery pipe 1132 can increase the heating time and heating area of the gas, so that the gas is fully heated.

[0047] In other embodiments, the heating pipe 112 can also be of other structures. As long as it can achieve evenly and efficiently transferring heat to the first gas delivery pipe 1131 and the second gas delivery pipe 1132.

[0048] In some embodiments, the explosion-proof junction box 12 includes a box body, and a power supply interface 122 is provided on the box body. The power supply interface 122 is electrically connected to the heating pipe 112. By electrically connecting the power supply interface 122 to the heating pipe 112, the switch of the heating pipe 112 can be controlled as needed.

[0049] In some embodiments, an explosion-proof switch is provided inside the box body, and the explosion-proof switch is electrically connected to the power supply interface 122. By setting the explosion-proof switch to be electrically connected to the power supply interface 122, the power supply can be controlled to be turned off by controlling the explosion-proof switch to be turned off, so as to control the heating pipe 112 to be turned off and stop heating, avoiding explosion due to too high temperature.

[0050] In some embodiments, a signal interface 123 is further provided on the box body. The signal interface 123 is electrically connected to the temperature measurement probe 121. An external electrical connection of the signal interface 123 is provided with a control device, and the control device is also electrically connected to the explosion-proof switch. The temperature inside the housing 11 is detected by the temperature measurement probe 121, and the detected temperature signal is transmitted to the control device. When the temperature is too high, the control device can control the explosion-proof switch to close, so as to control the power supply to be turned off, thereby controlling the heating tube 112 to turn off and stop heating, avoiding explosion due to too high temperature.

[0051] In some embodiments, three temperature measurement probes 121 are embedded in the heat-conducting material 111, and the three temperature measurement probes 121 are spaced apart. By arranging three temperature measurement probes 121 at intervals in the heat-conducting material 111, the temperature in the heat-conducting material 111 can be detected more uniformly and comprehensively, and the temperature can be detected in real time, avoiding explosion due to too high temperature.

[0052] Exemplarily, the heat-conducting material 111 may also but is not limited to embed two, four, five or six temperature measurement probes 121. The number of temperature measurement probes 121 can be set according to actual needs.

[0053] In some embodiments, a heat-insulating layer 116 is provided on the inner wall of the housing 11. By providing the heat-insulating layer 116 on the inner wall of the housing 11, the temperature inside the housing 11 can be maintained, and the heat loss inside the housing 11 can be effectively reduced.

[0054] In some embodiments, a flange plate is provided at the bottom of the outer wall of the housing 11, and mounting holes are provided on the flange plate. The installation and fixing position of the explosion-proof heater 1 for gas pressure regulation is facilitated through the mounting holes.

[0055] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof heater for gas pressure regulation, characterized in that, Comprising: A housing, wherein a heat-conducting material is filled in the housing, a heating pipe and a gas delivery pipe are embedded in the heat-conducting material, the heating pipe and the gas delivery pipe are arranged at intervals, the gas delivery pipe is spirally coiled and distributed, both ends of the gas delivery pipe extend out of the housing, one end of the gas delivery pipe is connected in communication with an intake pipe, and the other end of the gas delivery pipe is connected in communication with an outlet pipe; An explosion-proof junction box, the heating pipe is electrically connected to the explosion-proof junction box, the explosion-proof junction box is also electrically connected to a temperature measuring probe, and one end of the temperature measuring probe away from the explosion-proof junction box extends into the heat-conducting material in the housing.

2. The explosion-proof heater for gas pressure regulation according to claim 1, characterized in that, The gas delivery pipe comprises a first gas delivery pipe and a second gas delivery pipe, the first gas delivery pipe and the second gas delivery pipe are spirally coiled and distributed in sequence from top to bottom; both ends of the first gas delivery pipe and the second gas delivery pipe extend out of the housing, one end of the first gas delivery pipe is connected in communication with a first intake pipe, the other end of the first gas delivery pipe is connected in communication with a first outlet pipe, one end of the second gas delivery pipe is connected in communication with a second intake pipe, and the other end of the second gas delivery pipe is connected in communication with a second outlet pipe.

3. The explosion-proof heater for gas pressure regulation according to claim 2, characterized in that, The heating pipe is of a U-shaped structure, and the first gas delivery pipe and the second gas delivery pipe are spirally coiled around the outer periphery of the heating pipe in sequence from top to bottom.

4. The explosion-proof heater for gas pressure regulation according to claim 1, wherein, The explosion-proof junction box comprises a box body, a power supply interface is arranged on the box body, and the power supply interface is electrically connected to the heating pipe.

5. The explosion-proof heater for gas pressure regulation according to claim 4, characterized in that, An explosion-proof switch is arranged in the box body, and the explosion-proof switch is electrically connected to the power supply interface.

6. The explosion-proof heater for gas pressure regulation according to claim 5, characterized in that, A signal interface is further arranged on the box body, the signal interface is electrically connected to the temperature measuring probe, a control device is electrically connected to the outside of the signal interface, and the control device is also electrically connected to the explosion-proof switch.

7. The explosion-proof heater for gas pressure regulation according to claim 1, characterized in that, Three of the temperature measuring probes are embedded in the heat-conducting material, and the three temperature measuring probes are distributed at intervals.

8. The explosion-proof heater for gas pressure regulation according to claim 1, wherein, A heat-insulating layer is arranged on the inner wall of the housing.

9. A voltage regulating system, characterized in that, Comprising a pressure regulating valve and the explosion-proof heater for gas pressure regulation according to any one of claims 1-8, and the outlet end of the pressure regulating valve is connected in communication with the intake pipe.

10. A voltage regulating system, characterized in that, Comprising a first pressure regulating valve, a second pressure regulating valve and the explosion-proof heater for gas pressure regulation according to claim 2 or 3, the outlet end of the first pressure regulating valve is connected in communication with the first intake pipe, the first outlet pipe is connected in communication with the intake end of the second pressure regulating valve, and the outlet end of the second pressure regulating valve is connected in communication with the second intake pipe.

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