Insulation heat dissipation structure for switch equipment and switch cabinet

Abstract

The invention relates to the technical field of air inflation type switch cabinet heat dissipation, in particular to an insulation heat dissipation structure for switch equipment and a switch cabinet. The switch cabinet body is provided with a closed inflation space, and the side wall of the switch cabinet body is composed of sealing partition plates. And a plurality of heat dissipation modules are discontinuously arranged on the sealing partition. The heat dissipation modules are connected with an external cold source, and when it is detected that the internal temperature of the inflatable switch cabinet exceeds a set threshold value or the internal current of the inflatable switch cabinet is larger than a set threshold value, the external cold source is regulated to enable the temperatures of the adjacent heat dissipation modules to generate a temperature difference value. By arranging the heat dissipation modules with different heat dissipation efficiencies, a temperature gradient difference is formed in the closed space, due to the temperature gradient difference, gas convection can be generated in a low-temperature area and a high-temperature area in the closed space, and the heat dissipation efficiency is improved through enhancement of the gas convection.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of an inflatable switch cabinet, and in particular to an insulating heat dissipation structure for a switch device and a switch cabinet. Background Art

[0002] The inflatable cabinet is a switchgear with the advantages of compact structure, high insulation reliability, low maintenance cost, and a wide range of applications. Inflatable cabinets mostly use sulfur hexafluoride gas as insulating gas. At present, in order to achieve better environmental protection effects, dry air is also used as insulating gas. Although inflatable cabinets have many advantages, there are also some problems that need to be solved urgently. For example, the problem of heat dissipation of the inflatable cabinet can generally meet the heat dissipation requirements under normal operating conditions, but after exceeding a certain current range, if it runs for a long time, it will generate more heat and cannot meet the needs of normal and safe operation. Especially when the rated current reaches 3150A and above, the heat generated by the main circuit during operation is too concentrated. Long-term operation will lead to the degradation of the insulation performance of the components of the electrical equipment, the gradual decrease in the strength of the mechanical parts under the action of the electric stress, and the increase in the contact resistance of the conductor, resulting in partial discharge. Long-term operation causes the insulation breakdown of the outgoing line, which seriously affects the safe operation of the equipment. At present, the temperature rise problem of high-current inflatable cabinets is still the main problem that plagues the entire industry. Therefore, it has become an urgent requirement to design a heat dissipation structure and switchgear suitable for inflatable switchgear. Summary of the invention

[0003] The technical problem to be solved by the present invention is to improve the heat dissipation efficiency of a gas-filled switch cabinet.

[0004] The technical solution to the technical problem to be solved by the present invention is: an insulating heat dissipation structure for a switchgear, comprising a sealed partition, on which a plurality of heat dissipation modules with different heat dissipation efficiencies are arranged. Alternatively, the plurality of heat dissipation modules arranged on the sealed partition are respectively connected to an external cold source, and when heat dissipation is started, each of the heat dissipation modules maintains a set temperature difference.

[0005] Preferably, the heat dissipation modules are arranged vertically.

[0006] Furthermore, the temperature of the upper heat dissipation module is higher than the temperature of the lower heat dissipation module.

[0007] A pneumatic switch cabinet comprises a switch cabinet body, the switch cabinet body is provided with a comprehensive measurement and control module, a sealing partition is provided on the side wall of the switch cabinet body, a plurality of heat dissipation modules are intermittently provided on the sealing partition, the heat dissipation modules are respectively connected to an external cold source, when it is detected that the temperature inside the pneumatic switch cabinet exceeds a set threshold value or when it is detected that the current inside the pneumatic switch cabinet is greater than a set threshold value, the external cold source is regulated so that each heat dissipation module maintains a set temperature, and at the same time, a set temperature difference is maintained between adjacent heat dissipation modules.

[0008] Preferably, the heat dissipation modules are arranged vertically, and the temperature of the heat dissipation module at the top is the lowest.

[0009] Alternatively, the heat dissipation modules are arranged vertically, and upper portions of both sides of the lower heat dissipation module extend and surround both sides of the upper heat dissipation module, and the temperature of the upper heat dissipation module is lower than that of the lower heat dissipation module.

[0010] Preferably, there are three heat dissipation modules, namely, the first heat dissipation module, the second heat dissipation module and the third heat dissipation module from top to bottom; the external cold source is a copper heat sink arranged on the upper part of the shell of the gas-filled switch cabinet.

[0011] The first heat dissipation module is a copper heat dissipation plate, and is connected to an external cold source through a copper plate; the second heat dissipation module is an aluminum heat dissipation plate, and is connected to an external cold source through a copper plate; the third heat dissipation module is an aluminum heat dissipation plate, and is connected to an external cold source through an aluminum plate.

[0012] Preferably, the external cooling source further comprises a cooling fan arranged on one side of the copper heat sink.

[0013] Preferably, three heat dissipation modules are provided, the external cooling source is a liquid cooling system, each heat dissipation module is connected to the external cooling source via a liquid cooling pipe, and a liquid cooling pump is connected in series to the liquid cooling pipe to regulate the maintained temperature of the heat dissipation module.

[0014] Preferably, the heat dissipation module includes an electronic refrigeration sheet and a heat sink connected to the electronic refrigeration sheet, the liquid cooling tube is attached to the heat sink, and the integrated measurement and control module controls the start and stop of the electronic refrigeration sheet and the magnitude of the input current.

[0015] Better yet, when cooling is started, the electronic cooling sheet is controlled to remain started for To minutes and closed for Tc minutes in an alternating cycle.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention is mainly used for heat dissipation inside a confined space, especially for heat dissipation of a gas-filled switch cabinet. Since there is a certain pressure in the gas inside the gas-filled switch cabinet, the internal temperature gradient is uniform, and the gas convection is relatively weak, it is not easy to dissipate the heat in time; at the same time, in order to ensure the safe operation requirements of the insulation of the electrical equipment, it is necessary to maintain a safe distance inside the cabinet and the smoothness of the surface, so it is not easy to install heat dissipation equipment inside for heat dissipation. The present invention integrates multiple heat dissipation modules with segmented heat dissipation on a sealed partition, so that a temperature gradient difference and a relatively low temperature zone are formed inside the enclosed space during heat dissipation. By generating a low temperature zone inside the enclosed space, the enhancement of gas convection inside the enclosed space is driven, thereby improving the efficiency of heat dissipation.

[0018] 2. When using external energy to drive heat dissipation, in order to reduce energy consumption and improve heat dissipation efficiency, when controlling the heat dissipation module, that is, when maintaining the heat dissipation module at a specific temperature, an intermittent alternating control method is adopted, that is, the heat dissipation module is started for a period of time and the heat dissipation module is turned off for a period of time. When starting, the gas convection is increased. After the heat dissipation module is turned off, the gas convection has a certain hysteresis. The ordinary heat dissipation module can be used to cool down by natural heat dissipation, so as to keep the temperature inside the inflatable switch cabinet within a reasonable range, improve the safety and reliability of operation, and reduce the power consumption caused by heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an insulating heat dissipation structure of the present invention and a schematic diagram of the heat dissipation principle.

[0020] Figure 2 It is a schematic diagram of the distribution composition of an insulating heat dissipation structure of the present invention.

[0021] Figure 3 It is a distribution diagram of a heat dissipation module of the present invention.

[0022] In the figure: 100, sealing baffle; 201, first heat dissipation module; 202, second heat dissipation module; 203, third heat dissipation module. DETAILED DESCRIPTION

[0023] In order to make the technical solution and beneficial effects of the present invention clearer, the implementation methods of the present invention are further explained in detail below.

[0024] An insulating heat dissipation structure for a switchgear, the structure includes a sealed partition 100, and a sealed space can be formed by the sealed partition 100. The heat dissipation structure is mainly used to dissipate heat for equipment that generates heat inside the enclosed space. The heat dissipation structure can also be used as a side panel of an inflatable switch cabinet to dissipate heat for electrical equipment inside the inflatable cabinet. Since the interior of the inflatable cabinet is a closed space and the interior is gas, the heat dissipation effect of the switch cabinet is poor. A heat dissipation module is arranged on the sealed partition 100 of the insulating heat dissipation structure of the present invention. In the prior art, the heat dissipation module is mostly an integral piece. The heat dissipation module arranged in the present invention is not an integral heat dissipation module, but a plurality of independent heat dissipation modules or heat dissipation modules that are arranged separately. Based on the law of air flow, the heat dissipation modules can be arranged in the vertical sealed partition 100 in the up and down directions, and the heat dissipation efficiencies of the upper and lower heat dissipation modules are different. The upper heat dissipation efficiency is high and a lower temperature can be maintained. That is, the temperature maintained by the upper heat dissipation module is lower than that of the lower heat dissipation module, such as the temperature of the upper heat dissipation module is maintained at 30°C, and the temperature of the lower heat dissipation module is maintained at 50°C, and so on. At this time, if Figure 1 As shown, a low-temperature area will be generated in the upper part of the enclosed space, and the descending low-temperature airflow can form convection.

[0025] Taking the arrangement of three heat dissipation modules as an example, from top to bottom they are the first heat dissipation module 201 , the second heat dissipation module 202 , and the third heat dissipation module 203 .

[0026] The heat dissipation module includes a heat dissipation plate that is fitted and connected to the sealing partition 100, and heat dissipation fins that are perpendicular to the heat dissipation plate are evenly arranged on the heat dissipation plate. Since the interior of the inflatable switch cabinet is a closed space and high-voltage electrical equipment is arranged at the same time, it is necessary to maintain a good insulation distance and keep the inner wall surface of the inflatable cabinet smooth to prevent tip discharge, so the heat dissipation module can only be installed on the outside. In the actual production and installation process, especially after arriving at the site, the two electrical cabinets need to be combined, so the heat dissipation module can only be installed between the two cabinets. In order to achieve the heat dissipation of the heat dissipation module, the heat sink can be arranged vertically, and the lower part of the heat sink is provided with a ventilation space, so that the heat dissipation of the heat dissipation module can be effectively achieved. At this time, after the cabinets are combined, from the front, the two cabinets are tightly fitted, maintaining the beauty and consistency of the entire row of cabinets. The heat sinks arranged between the cabinets are arranged vertically, that is, the side walls of the cabinets are provided with depressions, or the front and rear ends of the side walls of the cabinets are provided with protrusions to meet the needs of combining cabinets. At the same time, space is reserved at the bottom of the rear of the cabinet so that the installation position of the heat sink is connected with the external space, such as Figure 3 As shown, the front of the side wall is provided with a closed protrusion to achieve cabinet connection, and a notch is provided at the bottom of the rear of the side wall to allow air to flow in. After the heat sink generates heat, the hot air in the heat sink area rises, and the external air enters from the bottom to dissipate heat through the circulating airflow.

[0027] Based on the structure of the heat dissipation module described above, when the three heat dissipation modules are arranged from top to bottom, the heat dissipation fins are arranged to overlap in the vertical direction to increase the fluidity of the air.

[0028] At this time, the insulating heat dissipation structure is used as the side panel to form a closed space. Figure 1 As shown, the current breaker inside the enclosed space is the heat source. Taking the above three heat dissipation modules as an example, the temperature of the first heat dissipation module is maintained at 20°C, the temperature of the second heat dissipation module 202 is maintained at 45°C, and the temperature of the third heat dissipation module 203 is maintained at 50°C. At this time, the interior corresponding to the first heat dissipation module 201 is a low temperature zone, the position corresponding to the second heat dissipation module 202 is a medium temperature zone, and the position corresponding to the third heat dissipation module 203 is a high temperature zone. Figure 1 As shown, convection occurs between air masses of different temperatures, and then a circulation is formed inside the entire space, which can improve the fluidity of the gas inside the enclosed space and further improve the heat dissipation efficiency. In addition to forming a circulation, in the horizontal direction, the high-temperature air mass near the heat source current circuit breaker in the middle will also flow between the air mass in the low-temperature zone. The flow of gas inside the entire enclosed space is driven by local flow. Compared with relatively static gas, the heat dissipation efficiency of flowing gas is higher.

[0029] In order to improve heat dissipation efficiency and reduce energy consumption, the heat dissipation control can be started at set intervals after the temperature inside the inflatable cabinet reaches a set threshold or the current value reaches a set threshold, so that the set temperature difference is maintained between the three heat dissipation modules.

[0030] The following solutions can be used to achieve temperature differentiation of each heat dissipation module.

[0031] 1. Natural cooling method. Figure 1 As shown, three heat dissipation modules can be extended to the upper part outside the enclosed space as an external cold source. The heat dissipation structure of the external cold source extending to the upper part and the material of the heat dissipation module are realized by selecting materials with different thermal conductivity and setting the area of ​​the upper external cold source. The external cold source is a heat sink structure, such as a copper plate, an aluminum plate, a stainless steel plate, etc., or a heat dissipation grid is set on the above plate to improve the heat dissipation efficiency.

[0032] For example, the first heat dissipation module 201 is made of copper material, and the external cold source connected to it is a heat sink made of copper material. For example, the second heat dissipation module is made of aluminum material, and the material of the external cold source connected to it is made of copper material. The third heat dissipation module 203 is made of aluminum material, and the material of the external cold source connected to it is also made of aluminum material. In the absence of external intervention, in the natural cooling mode, when the heat sink area of ​​the external cold source is the same, the maintained temperature of each heat dissipation module has a certain difference. This difference can cause gas convection inside the enclosed space, thereby improving the efficiency of heat dissipation. Based on the natural cooling heat dissipation mode, the temperature difference between each heat dissipation module is relatively low, such as the temperature of the first heat dissipation module is maintained at 40°C, the temperature of the second heat dissipation module 202 is maintained at 45°C, and the third heat dissipation module 203 is maintained at 50°C. At this time, the convection generated inside is small, and the improvement of heat dissipation efficiency is also small. At this time, a cold air blower can be set on the side with the copper heat sink as the external cold source, and the heat sink is cooled by circulating the external airflow to increase the temperature difference between the heat dissipation modules.

[0033] 2. Externally driven cooling. At this time, liquid cooling or air cooling can be used to cool down the three different heat dissipation modules. For example, based on the first method, the heat sink of the external cold source is air-cooled. Or the external cold source is a liquid cooling system, and the external cold source is connected to the heat dissipation module through a liquid cooling pipe to control the temperature of the heat dissipation module. The external cold source includes a liquid cooling box filled with liquid, which can be water or thermal oil. Heat sinks and fans are evenly arranged on the outside of the liquid cooling box for heat dissipation. The liquid cooling box is provided with a liquid outlet, and the liquid outlet is connected to a liquid cooling pump, and the liquid cooling pump is connected to the corresponding heat dissipation module through a liquid cooling pipe. Among them, the refrigeration of the liquid cooling box can be refrigerated by compressor refrigeration. The control system can control the temperature maintained by the heat dissipation module by adjusting the power of different liquid cooling pumps, and then control the temperature difference between each heat dissipation module. At this time, the temperature difference between the heat dissipation modules can be increased by heat dissipation, and the gas convection inside the inflatable switch cabinet can be increased, thereby improving the heat dissipation efficiency.

[0034] In addition, the electronic refrigeration sheet can also be used as a heat dissipation module to achieve rapid cooling. At this time, the heat dissipation module includes an electronic refrigeration sheet, which is fitted and connected to the sealing partition 100. The heat dissipation surface of the electronic refrigeration sheet is provided with a heat sink or connected to an external cold source. The electronic refrigeration sheet has a certain power consumption. In actual use, it can be started intermittently, started for five minutes, that is, refrigerated for five minutes, and then stopped for half an hour. The advantage of the electronic refrigeration sheet is that it can quickly produce low temperatures, and the refrigeration temperature can be below 0°C. At this time, during the refrigeration process, the low temperature zone cools down quickly, accelerating the flow of gas inside the enclosed space. After the gas generates convection, due to the large temperature difference in the low temperature zone, the airflow will have a certain hysteresis, so after stopping the refrigeration, a normal heat dissipation module is used for heat dissipation. At this time, one or two heat dissipation modules are set to heat dissipation modules made of electronic refrigeration sheets, and the others are still heat dissipation modules made of ordinary heat sinks. The overall system uses electronic refrigeration sheets to quickly cool down, accelerate the flow of gas inside the enclosed space, and the ordinary heat dissipation module achieves the effect of heat dissipation, thereby improving the heat dissipation efficiency.

[0035] A gas-filled switch cabinet includes a switch cabinet body, wherein a current circuit breaker and a control mechanism for realizing current disconnection are arranged inside the switch cabinet body, and a comprehensive measurement and control module, or a microcomputer relay protection device, is arranged to realize measurement and control of the overall switch cabinet. The front part of the switch cabinet is the control area, so the above-mentioned insulating heat dissipation structure can be used as a plate on the left and right sides and the rear to realize the encapsulation of the gas cabinet. Since switch cabinets of different voltage levels have specific sizes to meet the requirements of insulation protection, the cabinet body needs to be as large as possible, but the larger the size, the more space it occupies, and the higher the overall cost will be, so the size of the insulating heat dissipation structure cannot be set too large. In this embodiment, the insulating heat dissipation structure is used as a side panel, and the side panel not only has the function of closing the gas cabinet, but also needs to be able to be connected to the adjacent cabinet. Therefore, the overall insulating heat dissipation structure is controlled between 5-8cm. In this embodiment, the sealing partition 100 of the insulating heat dissipation structure can be made of a plate with the same design as the cabinet body, generally made of steel. A plurality of heat dissipation modules are arranged from top to bottom on the upper part of the sealing partition 100. The heat dissipation modules are respectively connected to the external cold source. When it is detected that the temperature inside the inflatable cabinet exceeds the set threshold or the current is greater than the set threshold, the external cold source is regulated to make the temperature of the upper heat dissipation module lower than the temperature of the lower heat dissipation module. The integrated measurement and control module inside the cabinet can realize the collection of temperature, current, and pressure data and regulate the external cold source. The insulated heat dissipation structure applies the above-disclosed technical solution. The integrated measurement and control module can be connected to the external cold source to realize the control of the external cold source, such as controlling the power of the liquid cooling pump, adjusting the current of the electronic refrigeration plate, controlling the speed of the heat dissipation fan, etc.

[0036] The principle of the present invention is to set up an external area for low-temperature heat dissipation, thereby forming a low-temperature zone inside the enclosed space. The formation of the low-temperature zone enhances the internal gas convection of the enclosed space, thereby achieving efficient heat dissipation. In the prior art, the heat dissipation modules set on the side panels are mostly integral and cannot form an effective temperature difference. In the present invention, the heat dissipation modules are segmented to form a temperature difference, thereby forming a low-temperature zone, a high-temperature zone, etc. inside the enclosed space, and the area with the temperature difference drives the gas flow. In addition to the top-down distribution of the heat dissipation modules on the sealing partition 100, it is also possible to Figure 2 The layout shown increases the effect. Figure 2 The diagram in FIG. 1 is a surrounding layout, where the first heat dissipation module 201 is located at the top and is surrounded by the second heat dissipation module 202 on three sides, and the main body of the second heat dissipation module 202 is located at the bottom of the first heat dissipation module 201. Similarly, the layout between the second heat dissipation module 202 and the third heat dissipation module 203. Figure 2 The layout shown in the figure is only a schematic diagram of this enclosed layout. In actual production, there may be other equipment or mechanisms on the side panels, and the local shape changes caused by the equipment or mechanisms that need to be avoided still fall within the protection scope of this layout.

[0037] In addition, in order to achieve good heat dissipation efficiency, the first heat dissipation module 201, the second heat dissipation module 202 and the third heat dissipation module 203 can be provided in plurality and at the same height. Figure 3 As shown, two groups of first heat dissipation modules 201 are provided. In this embodiment, the first heat dissipation module 201 is the heat dissipation module that maintains the lowest temperature, the second heat dissipation module 202 is the second, and the third heat dissipation module 203 is the highest. The two first heat dissipation modules 201 at the same height but different positions can expand the low temperature area inside the inflatable cabinet, thereby improving the heat dissipation efficiency.

[0038] The heat dissipation of the inflatable cabinet is mainly achieved through the cabinet body, and in the present invention, the heat dissipation is mainly achieved through the heat dissipation module. There are two control methods for heat dissipation of the heat dissipation module, one is conventional heat dissipation and the other is rapid heat dissipation. As described above, the natural cooling method. The heat dissipation module adopts a heat sink. During conventional heat dissipation, heat is dissipated only through the heat sink. During rapid heat dissipation, the control is started to quickly cool the first heat dissipation module 201, which can be maintained for a period of time. At the same time, the second heat dissipation module 202 and the third heat dissipation module 203 respectively maintain their respective temperatures, thereby driving the gas flow inside the inflatable cabinet. After that, it switches to the conventional heat dissipation method, and adopts the ordinary natural heat dissipation method for heat dissipation and cooling. Rapid heat dissipation and heat dissipation enhance the internal gas flow, and conventional heat dissipation improves the heat dissipation efficiency during conventional heat dissipation.

[0039] In actual operation, heat dissipation can be started by temperature warning or current warning. Since heat is generated by the current breaking device inside the inflatable cabinet, the magnitude of the current affects the generation of heat. Starting with a warning based on the magnitude of the current can have higher safety. The simpler control strategy is to start the external cold source when the current is greater than the set start threshold Iq to keep the different heat dissipation modules at the set temperature, and to keep the start time To and the shutdown time Tc in a cyclic start and shutdown state until the current is less than the set shutdown threshold Ig and then the external cold source is shut down.

[0040] In which Tc+To=Ta, To=μTa is set, and then a heat dissipation control model is constructed to predict the value of μ when the current increment δI exceeds the starting threshold, so as to keep the internal temperature of the inflatable cabinet constant within the set value range.

[0041] First, obtain experimental data to construct a data set. Power on the insulated heat dissipation structure of the inflatable cabinet, collect the current increment δI greater than the set start threshold Iq, the internal temperature T of the inflatable cabinet, the pressure P inside the inflatable cabinet, the time t to start the external cold source to dissipate heat, and the proportion of the external cold source working time μ. The collected data are organized into a multi-sample data vector Aj (δIj, Tj, Pj, tj, μj) to form a data set A.

[0042] After that, we build a prediction model. Since it needs to be applied in a small system, we use a decision tree model to create it. After creating the model, we split the data set A into a training set and a validation set. We use the training set to train the model, and use the validation set to evaluate and proofread the model to generate a prediction model.

[0043] The prediction model is then transplanted into the integrated measurement and control module inside the switch cabinet or the microcomputer relay protection device. The integrated measurement and control module collects the above data in real time and transmits it to the prediction model, which determines the time proportion μ of the external cold source working according to the current current.

[0044] During operation, a prediction is made at each interval t0, the parameter μ is modified in real time according to the prediction result, and heat dissipation control is performed immediately according to the parameter μ. When the current is greater than the set start threshold, the value of t0 can be 1-10 minutes.

[0045] Through the above control, the heat dissipation efficiency can be improved while the energy consumption required for heat dissipation can be controlled to a minimum.

[0046] In the process of formulating the heat dissipation control model mentioned above, it was found through the analysis of the control data of the heat dissipation module made of the electronic refrigeration sheet. When the temperature of the heat dissipation module drops below 0 degrees, that is, when the heat dissipation module is kept at 0°C and To is operated, and Tc is turned off for alternating cycle control, the pressure fluctuation amplitude of one of the test devices is greater than the pressure fluctuation amplitude of other test devices. Later, the sealing of the test equipment was disassembled and detected to be worse than that of other equipment, and conventional air, i.e., water vapor, entered the interior. The amplitude of the decrease in the condensation pressure of water vapor during the intermittent refrigeration period is greater than that of the inflatable cabinet without air intake. At present, in order to achieve green environmental protection, the gas in the inflatable cabinet is changed from sulfur hexafluoride to dry air. The performance of the inflatable cabinet is closely related to the sealing condition of the inflatable cabinet, and the dry gas inside the inflatable cabinet is closely related to safe operation. Therefore, while using the electronic refrigeration sheet of the present invention to perform ultra-low temperature intermittent refrigeration to drive the internal airflow to improve the heat dissipation efficiency, it is also possible to judge whether the internal gas is dry gas by comparing the amplitude of the change in the pressure of the inflatable cabinet during the heat dissipation process.

[0047] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Through the above description, relevant staff can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification. All so-called equal changes and modifications of the shapes, structures, features and spirits described in the scope of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An insulation and heat dissipation structure for a switchgear, comprising a sealing partition (100), characterized in that: A plurality of heat dissipation modules with different heat dissipation efficiencies are arranged on the sealing baffle (100). Alternatively, a plurality of heat dissipation modules arranged on the sealing partition (100) are respectively connected to an external cold source, and when heat dissipation is started, each of the heat dissipation modules maintains a set temperature difference.

2. The insulating heat dissipation structure for a switchgear according to claim 1, characterized in that: The heat dissipation modules are arranged vertically.

3. An insulating heat dissipation structure for a switchgear according to claim 1 or 2, characterized in that: The temperature of the upper heat dissipation module is higher than the temperature of the lower heat dissipation module.

4. An inflatable switch cabinet, comprising a switch cabinet body, wherein the switch cabinet body is provided with a comprehensive measurement and control module, characterized in that: A sealing partition (100) is provided on the side wall of the switch cabinet body, and a plurality of heat dissipation modules are intermittently provided on the sealing partition (100), and the heat dissipation modules are respectively connected to an external cold source. When it is detected that the temperature inside the gas-filled switch cabinet exceeds a set threshold value or when it is detected that the current inside the gas-filled switch cabinet is greater than a set threshold value, the external cold source is regulated so that each heat dissipation module maintains a set temperature, and a set temperature difference is maintained between adjacent heat dissipation modules.

5. The gas-filled switch cabinet according to claim 4, characterized in that: The heat dissipation modules are arranged vertically, and the temperature of the upper heat dissipation module is lower than the temperature of the lower heat dissipation module; Alternatively, the heat dissipation modules are arranged vertically, and upper portions of both sides of the lower heat dissipation module extend and surround both sides of the upper heat dissipation module, and the temperature of the upper heat dissipation module is lower than that of the lower heat dissipation module.

6. The gas-filled switch cabinet according to claim 5, characterized in that: The heat dissipation modules are provided with three, which are, from top to bottom, a first heat dissipation module (201), a second heat dissipation module (202), and a third heat dissipation module (203); the external cold source is a copper heat sink provided on the upper part of the shell of the gas-filled switch cabinet body; The first heat dissipation module (201) is a copper heat dissipation plate, and is connected to an external cold source via a copper plate; the second heat dissipation module (202) is an aluminum heat dissipation plate, and is connected to an external cold source via a copper plate; the third heat dissipation module (203) is an aluminum heat dissipation plate, and is connected to an external cold source via an aluminum plate.

7. The gas-filled switch cabinet according to claim 6, characterized in that: The external cooling source also includes a cooling fan arranged on one side of the copper heat sink.

8. The gas-filled switch cabinet according to claim 5, characterized in that: There are three heat dissipation modules, and the external cold source is a liquid cooling system. Each heat dissipation module is connected to the external cold source through a liquid cooling pipe. The liquid cooling pipe is connected in series with a liquid cooling pump to adjust the maintained temperature of the heat dissipation module.

9. The gas-filled switch cabinet according to claim 8, characterized in that: The heat dissipation module includes an electronic refrigeration sheet and a heat sink connected to the electronic refrigeration sheet. The liquid cooling tube is attached to the heat sink. The integrated measurement and control module controls the start and stop of the electronic refrigeration sheet and the size of the input current.

10. The gas-filled switch cabinet according to claim 9, characterized in that: When cooling is started, the electronic cooling sheet is controlled to remain started for To minutes and closed for Tc minutes in an alternating cycle.

Images