Circuit breaker insulating gas heating device

Abstract

The present invention discloses a circuit breaker insulating gas heating device including a gas heating device, a circuit breaker, and an insulator. The circuit breaker includes an air chamber; the two ends of the insulator are respectively connected to the high-pressure side of the air chamber and the low-pressure side of the air chamber to form a gas circulation channel; the gas heating device is used to heat the insulating gas on the low-pressure side of the air chamber, and a fan for circulating the insulating gas in the air chamber and the insulator is provided in the gas heating device. The gas on the low-pressure side of the air chamber enters the insulator under the action of the fan, and the gas entering the insulator is heated by the gas heating device and transported to the high-pressure side of the air chamber through the insulator. In the circuit breaker insulating gas heating device provided in the present application, the insulating gas is heated by setting a gas heating device, and the low-temperature insulating gas of the circuit breaker is heated by the gas heating device and then transported to the air chamber of the circuit breaker, thereby realizing rapid circulation heating of the insulating gas in the air chamber of the circuit breaker, and reducing the situation of low-temperature liquefaction of the insulating gas.

Description

Technical Field

[0001] The invention relates to the field of electromechanical technology, and in particular to a circuit breaker insulating gas heating device. Background Art

[0002] When a high-voltage circuit breaker filled with insulating gas at a certain pressure is exposed to a certain temperature below zero, the SF6 gas will produce low-temperature liquefaction, causing the gas pressure to be lower than the working locking pressure, and the normal insulation and breaking characteristics of the high-voltage circuit breaker will also be affected.

[0003] Usually, heating and heat preservation methods are used to ensure that the SF6 liquefaction pressure is higher than the SF6 gas pressure when the circuit breaker is locked. Usually, a gas heating device is added to the circuit breaker structure in a reasonable and effective way. When the ambient temperature drops to a certain temperature (-25℃), the gas heating device automatically starts to operate and heats the SF6 gas in the circuit breaker, thereby solving the problem of low-temperature liquefaction of SF6 gas in circuit breakers in severe cold areas.

[0004] However, the gas flows slowly during the heating process, and part of the heat of the gas is dissipated, resulting in a lower temperature in the gas chamber when it re-enters the circuit breaker, and thus the circuit breaker gas still liquefies at low temperature.

[0005] Therefore, how to reduce the low-temperature liquefaction of insulating gas in the circuit breaker is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a circuit breaker insulating gas heating device to reduce the situation of low-temperature liquefaction of the insulating gas in the circuit breaker.

[0007] To achieve the above object, the present invention provides a circuit breaker insulating gas heating device, comprising:

[0008] Gas heating devices;

[0009] breaker;

[0010] insulator;

[0011] The circuit breaker includes an air chamber, and the two ends of the insulator are respectively connected to the high-pressure side of the air chamber and the low-pressure side of the air chamber to form a gas circulation channel; the gas heating device is provided with a fan for circulating the insulating gas in the air chamber and the insulator; the gas heating device is used to heat the insulating gas on the low-pressure side of the air chamber.

[0012] Preferably, the low-pressure side of the air chamber is connected to the insulator via a heating tank in a gas heating device, and the blades of the fan are located in the heating tank.

[0013] Preferably, the cross-sectional area of ​​the top of the heating tank gradually decreases along the flow direction of the insulating gas, and the gas outlet of the heating tank is located at the top of the heating tank.

[0014] Preferably, the gas heating device comprises a heating belt with a U-shaped tube structure, the middle part of the U-shaped tube is a hollow structure for insulating gas to pass through; the U-shaped tube is sleeved on the outside of the fan and located on the inside of the heating tank.

[0015] Preferably, the fan is an electromagnetically driven fan, the fan comprises an electromagnetic pump, a fixed shaft and a rotating sleeve, the electromagnetic pump comprises an electromagnetic pump rotor and an electromagnetic pump stator which generates electromagnetic induction with the electromagnetic pump rotor, the fixed shaft is installed in the heating tank, the rotating sleeve is rotatably sleeved on the outside of the fixed shaft, the fan blades are installed on the rotating sleeve, the electromagnetic pump rotor is sleeved on the lower end of the rotating sleeve and is fixedly connected to the rotating sleeve; the electromagnetic pump rotor is located on the inner side of the heating belt; the electromagnetic pump stator is located on the outer side of the heating tank and is arranged corresponding to the electromagnetic pump rotor;

[0016] Or the fan is a motor-driven fan, which includes a motor and an intermediate transmission shaft connecting the motor output end and the rotating shaft of the fan, the intermediate transmission shaft is rotationally sealed with the wall of the heating tank, and the motor is located outside the heating tank.

[0017] Preferably, it also includes a controller and a temperature measuring device connected to the controller for measuring the temperature inside and outside the gas chamber. The circuit breaker and the gas heating device are both connected to the controller. The controller receives the temperature measured by the temperature measuring device to control the operation of the gas heating device.

[0018] Preferably, the fan comprises a plurality of layers of blade groups arranged in sequence along the gas heating device from the air inlet to the air outlet, and each layer of the blade group comprises at least three blades.

[0019] Preferably, the insulator comprises a gas delivery pipe for the insulating gas to pass through, the gas delivery pipe is provided with a channel for the insulating gas to pass through, and the surface of the channel is provided with a heat-insulating material; the first cross-sectional area of ​​the channel along a direction perpendicular to the flow direction of the insulating gas in the channel becomes smaller and smaller;

[0020] The second cross-sectional area of ​​the air chamber along a direction perpendicular to the flow direction of the insulating gas in the air chamber is larger than the first cross-sectional area.

[0021] Preferably, the insulator further comprises a first sleeve sleeved on the outside of the gas delivery tube, a first cavity is formed between the first sleeve and the gas delivery tube, the first cavity is a vacuum cavity or the first cavity is filled with insulating material, and the outermost side of the insulator is an umbrella skirt structure.

[0022] Preferably, the insulator and the air chamber have the same height and also include an intermediate connecting assembly, wherein the intermediate connecting assembly includes an intermediate connecting pipe connecting the air outlet end of the insulator and the high-voltage side of the air chamber and a second sleeve sleeved on the outside of the intermediate connecting pipe, and a second cavity is formed between the intermediate connecting pipe and the second sleeve, and the second cavity is a vacuum cavity or the second cavity is filled with insulating material.

[0023] In the above technical scheme, the circuit breaker insulating gas heating device provided by the present invention includes a gas heating device, a circuit breaker, and an insulator, and the circuit breaker includes an air chamber. The two ends of the insulator are respectively connected to the high-pressure side of the air chamber and the low-pressure side of the air chamber to form a gas circulation channel. The gas heating device is used for heating, and the gas heating device is used to heat the insulating gas on the low-pressure side of the air chamber. A fan for circulating the insulating gas in the air chamber and the insulator is provided in the gas heating device. The gas on the low-pressure side of the air chamber enters the insulator under the action of the fan, and the gas entering the insulator is heated by the gas heating device, and is transported to the high-pressure side of the air chamber through the insulator.

[0024] In the circuit breaker insulating gas heating device provided in the present application, a gas heating device is provided to heat the insulating gas, and the low-temperature insulating gas of the circuit breaker is heated by the gas heating device and then transported to the gas chamber of the circuit breaker, thereby realizing rapid circulation heating of the insulating gas in the circuit breaker gas chamber and reducing the low-temperature liquefaction of the insulating gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of a circuit breaker insulating gas heating device provided by an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of another circuit breaker insulating gas heating device provided by an embodiment of the present invention;

[0028] Figure 3 A top view of another circuit breaker insulating gas heating device provided by an embodiment of the present invention;

[0029] Figure 4 A partial structural schematic diagram of a gas heating device provided in an embodiment of the present invention.

[0030] in Figure 1-4 In: 1-circuit breaker, 2-intermediate connecting assembly, 3-insulator, 4-base, 5-gas connecting pipeline, 6-controller, 7-control cabinet, 8-gas heating device, 9-heating tank, 10-fan, 11-heating belt, 12-electromagnetic pump stator, 13-electromagnetic pump rotor, 14-rotating sleeve, 15-fixed shaft, 16-arc extinguishing chamber, 17-high voltage housing, 18-flange, 19-intermediate transmission shaft, 20-motor, 21-rotating seal. DETAILED DESCRIPTION

[0031] The core of the present invention is to provide a circuit breaker insulating gas heating device to reduce the low-temperature liquefaction of the insulating gas in the circuit breaker.

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0033] Please refer to Figures 1 to 4 .

[0034] In a specific embodiment, the circuit breaker insulating gas heating device provided by the specific embodiment of the present invention includes a gas heating device 8, a circuit breaker 1, and an insulator 3. The circuit breaker 1 includes an air chamber, and the air chamber includes a support air chamber. The two ends of the insulator 3 are respectively connected to the high-pressure side of the air chamber and the low-pressure side of the air chamber. The gas heating device 8 is used to heat the insulating gas on the low-pressure side of the air chamber. The gas heating device 8 is provided with a fan 10 for circulating the insulating gas in the circuit breaker 1.

[0035] Specifically, the circuit breaker 1 may be a T-type double-break circuit breaker, and the circuit breaker 1 includes an arc extinguishing chamber 16, a high-voltage housing 17, a control cabinet 7, a spring operating mechanism or a hydraulic operating mechanism, etc. The gas chamber includes an arc extinguishing chamber gas chamber arranged in the arc extinguishing chamber 16, and the high-voltage housing 17 may be specifically designed as a four-way structure, which is used to connect two arc extinguishing chamber gas chambers, a support gas chamber, and an insulator 3 directly in front on the high-voltage side. Specifically, the insulator 3 may be connected to the gas chamber through the high-voltage housing 17.

[0036] The control cabinet 7 contains a controller 6, a 220V power supply, and a temperature measuring device connected to the controller 6. The temperature measuring device is used to measure the temperature inside and outside the gas chamber. The circuit breaker 1 and the gas heating device 8 are both connected to the controller 6. The controller 6 receives the insulating gas temperature of the circuit breaker 1 to control the operation of the gas heating device 8. The temperature sensor of the temperature measuring device is used to measure the temperature inside or outside the gas chamber of the circuit breaker 1. The temperature sensor collects the temperature and transmits the temperature to the controller 6. The controller 6 can control the gas heating device 8 to heat according to the temperature.

[0037] Specifically, when the temperature of the circuit breaker 1 is lower than a certain temperature, the controller 6 controls the 220V power supply to power the gas heating device 8 for heating, the gas heating device 8 works, and the fan 10 rotates to heat the circuit breaker 1. When the temperature of the circuit breaker 1 is higher than a certain temperature, the controller 6 controls the gas heating device 8 to stop heating.

[0038] In a specific embodiment, preferably, the low-pressure side of the air chamber is connected to the insulator 3 through the heating tank 9 in the heating device, and the blades of the fan 10 are located in the heating tank 9. Preferably, the wall surface of the heating tank 9 is provided with an insulation layer to reduce heat loss.

[0039] Furthermore, the gas heating device 8 includes a heating belt 11 of a U-shaped tube structure, and the middle part of the U-shaped tube is a hollow structure for the insulating gas to pass through. Specifically, the U-shaped tube is arranged around the inner wall of the heating tank 9. Preferably, the U-shaped tube is sleeved on the outside of the fan 10, and the heating area is large. Since the heating belt 11 is located in the heating tank 9, the heating belt 11 is a U-shaped tube structure, and the heating area is large. The heating area is twice the heating area of ​​the heating belt 11 installed outside the heating tank 9, and the heating efficiency is improved.

[0040] Specifically, the heating belt 11 can be installed on the heating tank 9 through the flange 18. Specifically, the heating belt 11 is supported by the bottom of the heating tank 9.

[0041] The heating belt 11 may also be a plurality of cylindrical heating belts stacked in sequence to maximize the heating area and heating efficiency.

[0042] In a specific embodiment, the circuit breaker insulating gas heating device further includes a base frame 4, the circuit breaker 1 and the insulator 3 are mounted on the top of the support portion of the base frame 4, and the gas heating device 8 is mounted on the bottom of the support portion. Specifically, the gas heating device 8 is connected to the gas chamber through a gas connecting pipeline 5. The gas heating device 8 can be mounted on the lower side of the flange of the base frame 4.

[0043] During operation, the gas on the low-pressure side of the air chamber enters the insulator 3 under the action of the fan 10 , and the gas entering the insulator 3 is heated by the gas heating device 8 , and is transported to the high-pressure side of the air chamber through the insulator 3 .

[0044] From the above description, it can be seen that in the circuit breaker insulating gas heating device provided in the specific embodiment of the present application, the insulating gas is heated by setting a gas heating device 8, and the low-temperature insulating gas of the circuit breaker 1 is heated by the gas heating device 8 and then transported to the gas chamber of the circuit breaker 1, thereby realizing rapid circulation heating of the insulating gas in the circuit breaker 1 and reducing the low-temperature liquefaction of the insulating gas.

[0045] In a specific embodiment, the fan 10 is an electromagnetically driven fan, the fan 10 includes an electromagnetic pump, a fixed shaft 15 and a rotating sleeve 14, the electromagnetic pump includes an electromagnetic pump rotor 13 and an electromagnetic pump stator 12 that generates electromagnetic induction with the electromagnetic pump rotor 13, the fixed shaft 15 is installed in the heating tank 9, the rotating sleeve 14 can be rotatably sleeved on the outside of the fixed shaft 15, the fan blades of the fan 10 are installed on the rotating sleeve 14, the electromagnetic pump rotor 13 is sleeved on the lower end of the rotating sleeve 14, and is fixedly connected to the rotating sleeve 14, and the electromagnetic pump rotor 13 is located inside the heating belt 11. The electromagnetic pump stator 15 is located outside the heating tank 9 and is arranged corresponding to the electromagnetic pump rotor 13.

[0046] Specifically, the fixed shaft 15 is located at an axially symmetrical position of the heating tank 9 and is fixed on the lower flange of the heating tank 9. The lower end of the rotating shaft sleeve 14 is fixed with the electromagnetic pump rotor 13. The electromagnetic pump stator 12 is located on the lower side of the outside of the heating tank 9, coaxial with the electromagnetic pump rotor 13, and the height direction matches. The electromagnetic pump stator 12 can also be located outside the electromagnetic pump rotor 13 inside the heating tank 9.

[0047] When the electromagnetic pump needs to work, the station uses a 220V power supply to electronically power the electromagnetic pump, and electromagnetic induction is generated between the electromagnetic pump stator 12 and the electromagnetic pump rotor 13. The electromagnetic pump rotor 13 rotates, driving the fan 10 on the rotating sleeve 14 to rotate, thereby generating suction on the insulating gas of the circuit breaker 1 and thrust on the insulating gas of the insulator 3, accelerating the flow heat exchange of the insulating gas.

[0048] The cross-sectional area of ​​the top of the heating tank 9 gradually decreases along the flow direction of the insulating gas, and the gas outlet of the heating tank 9 is located at the top of the heating tank 9. The cross-sectional area of ​​the upper part of the heating tank 9 gradually decreases, thereby accelerating the flow rate of the insulating gas.

[0049] The electromagnetic pump stator 12 is located outside the heating tank 9, and the electromagnetic pump rotor 13 is located inside the heating tank 9. The rotation of the electromagnetic pump rotor 13 inside the heating tank 9 is controlled by the electromagnetic pump stator 12 outside the heating tank 9, which is beneficial to the gas sealing design inside the heating tank 9 and there is no possibility of leakage.

[0050] In another specific embodiment, the fan 10 is a motor-driven fan, and the fan 10 includes a motor 20 and an intermediate transmission shaft 19 connecting the output end of the motor 20 and the rotating shaft of the fan 10, the intermediate transmission shaft 19 and the wall surface of the heating tank 9 are rotationally sealed, and the motor 20 is located outside the heating tank 9. Specifically, the motor 20 is located outside the heating tank 9, which is convenient for the inspection and maintenance of the motor 20. The fan 10 is driven by the motor 20, and the intermediate transmission shaft 19 is located at an axisymmetric position of the heating tank 9, a part of which is inside the heating tank 9, and a part of which is outside the heating tank 9. The motor 20 is fixed on the intermediate transmission shaft 19 outside the heating tank 9. There is a rotating seal 21 between the intermediate transmission shaft 19 and the lower flange of the heating tank 9 for sealing to ensure the sealing of the heating tank 9.

[0051] When the motor 20 needs to work, the station uses a 220V power supply to power the motor 20. The rotation of the motor 20 drives the intermediate transmission shaft 19 and the fan 10 to rotate, thereby generating suction on the insulating gas, generating thrust on the insulating gas in the insulator 3, and accelerating the flow heat exchange of the insulating gas.

[0052] The fan 10 includes a plurality of layers of blade groups arranged in sequence from the air inlet to the air outlet along the gas heating device 8, and each layer of blade group includes at least three blades. Specifically, the blades are in an array structure, and specifically, each layer of blades is in an array structure along the circumferential direction, and the plurality of layers of blade groups are in an array structure along the rotation axis direction.

[0053] The insulator 3 includes a gas delivery pipe for the insulating gas to pass through, and a channel for the insulating gas to pass through is provided in the gas delivery pipe. Specifically, preferably, the insulating gas in the gas chamber delivery pipe flows in the opposite direction to the insulating gas in the gas chamber.

[0054] In order to improve the heat preservation effect, preferably, the insulator 3 also includes a first sleeve sleeved on the outside of the gas delivery pipe, a first cavity is formed between the first sleeve and the gas delivery pipe, and the first cavity is a vacuum cavity or filled with a heat insulating material. Preferably, the outermost side of the insulator is an umbrella skirt structure.

[0055] Furthermore, the cross-sectional area of ​​the channel perpendicular to the flow direction of the insulating gas in the channel is getting smaller and smaller. The gas delivery pipe is a hollow structure. Preferably, the cavity of the hollow part is a conical structure, that is, the lower end of the channel is large and the upper end is small. As the cross-sectional area of ​​the hollow part decreases, the flow rate of the insulating gas becomes faster and faster. The gas delivery pipe preferably uses a thick-walled structure to enhance the insulation effect of the insulating gas inside. The middle part of the gas delivery pipe adopts a thick-walled small-pore structure, which is conducive to the insulation of the insulating gas; the cross-sectional area of ​​the channel gradually decreases, which is conducive to increasing the flow rate of the insulating gas.

[0056] In order to further improve the thermal insulation effect, preferably, the surface of the gas delivery pipe is provided with thermal insulation material

[0057] The second cross-sectional area of ​​the air chamber along the direction perpendicular to the flow of the insulating gas in the air chamber is larger than the first cross-sectional area. Preferably, the cross-sectional area of ​​the channel in the insulating sleeve is much smaller than the cross-sectional area of ​​the air chamber in the circuit breaker, which is conducive to the rapid flow of the insulating gas, thereby bringing the heated insulating gas on the low-pressure side to the high-pressure side.

[0058] The insulator 3 has the same height as the air chamber, and also includes an intermediate connection assembly 2, which includes an intermediate connection pipe connecting the outlet end of the insulator 3 and the high-voltage side of the air chamber and a second sleeve sleeved on the outside of the intermediate connection pipe, and a second cavity is formed between the intermediate connection pipe and the second sleeve, and the second cavity is a vacuum cavity or filled with insulation material. That is, the intermediate connection assembly 2 of the present application is a double-layer shell, and the middle of the double-layer shell is in a vacuum state, or filled with insulation material, which plays a great role in maintaining the heat in the high-voltage shell 17.

[0059] The insulator 3 is located in front of the circuit breaker 1, shares the base frame 4 with the circuit breaker 1, and is arranged side by side. The insulating sleeve and the insulating pillar of the circuit breaker 1 form a double support structure, which greatly improves the structural stability of the circuit breaker 1 with a particularly high height. Since the voltage of the air chamber of the circuit breaker 1 and the upper and lower ends of the insulator 3 are always the same, the air chamber of the circuit breaker 1 and the insulator 3 can be relatively close, which is conducive to reducing the product volume and has no effect on the product insulation.

[0060] The present invention does not change the original internal insulation structure of the circuit breaker 1 and has no influence on the insulation and breaking capacity of the circuit breaker 1 .

[0061] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0062] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit breaker insulating gas heating device, It is characterized in that include: Gas heating device (8); Circuit breaker (1); Insulator (3); The circuit breaker (1) comprises an air chamber, and two ends of the insulator (3) are respectively connected to the high-pressure side of the air chamber and the low-pressure side of the air chamber to form a gas circulation channel; the gas heating device (8) is provided with a fan (10) for circulating the insulating gas in the air chamber and the insulator (3); the gas heating device (8) is used to heat the insulating gas on the low-pressure side of the air chamber; The low-pressure side of the air chamber is connected to the insulator (3) via a heating tank (9) in a gas heating device (8), and the blades of the fan (10) are located in the heating tank (9); The gas heating device (8) comprises a heating belt (11) of a U-shaped tube structure, wherein the middle of the U-shaped tube is a hollow structure for insulating gas to pass through; the U-shaped tube is sleeved on the outside of the fan (10) and is located on the inside of the heating tank (9); The fan (10) is an electromagnetically driven fan, comprising an electromagnetic pump, a fixed shaft (15) and a rotating shaft sleeve (14); the electromagnetic pump comprises an electromagnetic pump rotor (13) and an electromagnetic pump stator (12) which generates electromagnetic induction with the electromagnetic pump rotor (13); the fixed shaft (15) is installed in the heating tank (9); the rotating shaft sleeve (14) is rotatably sleeved on the outside of the fixed shaft (15); the fan blades of the fan (10) are installed on the rotating shaft sleeve (14); the electromagnetic pump rotor (13) is sleeved on the lower end of the rotating shaft sleeve (14) and is fixedly connected to the rotating shaft sleeve (14); the electromagnetic pump rotor (13) is located on the inner side of the heating belt (11); the electromagnetic pump stator (12) is located on the outer side of the heating tank (9) and is arranged corresponding to the electromagnetic pump rotor (13); Or the fan (10) is a motor-driven fan, the fan (10) comprises a motor (20) and an intermediate transmission shaft (19) connecting the output end of the motor (20) and the rotating shaft of the fan (10), the intermediate transmission shaft (19) is rotationally sealed with the wall surface of the heating tank (9), and the motor (20) is located outside the heating tank (9).

2. The circuit breaker insulating gas heating device according to claim 1, It is characterized in that The cross-sectional area of ​​the top of the heating tank (9) gradually decreases along the flow direction of the insulating gas, and the gas outlet of the heating tank (9) is located at the top of the heating tank (9).

3. The circuit breaker insulating gas heating device according to claim 1, It is characterized in that It also includes a controller (6) and a temperature measuring device connected to the controller (6) for measuring the temperature inside and outside the gas chamber. The circuit breaker (1) and the gas heating device (8) are both connected to the controller (6). The controller (6) receives the temperature measured by the temperature measuring device to control the operation of the gas heating device (8).

4. The circuit breaker insulating gas heating device according to claim 1, It is characterized in that The fan (10) comprises a plurality of layers of fan blade groups arranged in sequence along the gas heating device (8) from the air inlet to the air outlet, and each layer of the fan blade group comprises at least three fan blades.

5. The circuit breaker insulating gas heating device according to claim 1, It is characterized in that The insulator (3) comprises a gas delivery pipe for insulating gas to pass through, a channel for insulating gas to pass through is provided in the gas delivery pipe, and a thermal insulation material is provided on the surface of the channel; the first cross-sectional area of ​​the channel along a direction perpendicular to the flow direction of the insulating gas in the channel becomes smaller and smaller; The second cross-sectional area of ​​the air chamber along a direction perpendicular to the flow direction of the insulating gas in the air chamber is larger than the first cross-sectional area.

6. The circuit breaker insulating gas heating device according to claim 5, It is characterized in that The insulator (3) further comprises a first sleeve sleeved on the outside of the gas delivery tube, a first cavity is formed between the first sleeve and the gas delivery tube, the first cavity is a vacuum cavity or the first cavity is filled with a heat insulating material, and the outermost side of the insulator (3) is an umbrella skirt structure.

7. The circuit breaker insulating gas heating device according to any one of claims 1 to 6, It is characterized in that The insulator (3) and the air chamber have the same height, and further include an intermediate connection assembly (2), wherein the intermediate connection assembly (2) includes an intermediate connection pipe connecting the air outlet end of the insulator (3) and the high-voltage side of the air chamber, and a second sleeve sleeved on the outside of the intermediate connection pipe, wherein a second cavity is formed between the intermediate connection pipe and the second sleeve, and the second cavity is a vacuum cavity or is filled with a heat-insulating material.

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