A high-pressure end cap type radiator and its working method

Abstract

This invention discloses a high-pressure end-cap type radiator and its working method, belonging to the field of switchgear heat dissipation. The high-pressure end-cap type radiator includes a heat dissipation shell and a gas guiding channel structure. The heat dissipation shell is airtightly connected to the port of the GIS equipment tank, and an annular gap is formed between the heat dissipation shell and the gas guiding channel structure. The gas guiding channel structure is divided into an ascending channel and a descending channel, which are connected at the top inside the heat dissipation shell. The ascending channel and the descending channel are staggered and not interconnected at the connection between the heat dissipation shell and the GIS equipment tank. One end of the ascending channel is connected to the inner cavity of the GIS equipment tank, and the other end is connected to the descending channel at the top inside the heat dissipation shell. The descending channel passes through the annular gap and connects to the oblique hole channel to the inner cavity of the GIS equipment tank. This invention can improve the heat exchange capacity of GIS equipment.

Description

Technical Field

[0001] This invention belongs to the field of heat dissipation for switchgear, specifically relating to a high-pressure end cap type heat sink and its working method. Background Technology

[0002] SF6, due to its high global warming potential (GWP=23900), no longer aligns with current trends in green and environmentally friendly switch applications. The current technical approach for environmentally friendly medium- and high-voltage gas-filled products utilizes naturally occurring N2, N2+O2, and CO2 as insulating media, and employs vacuum breaking technology as the main switch's arc-extinguishing technology, achieving lower greenhouse gas emissions. Environmentally friendly products at voltage levels of 40.5kV and above require a gas pressure of 0.2MPa (gauge pressure at 20℃) or higher to meet insulation requirements; therefore, the pressure vessel must be a tank-type container made of cast or welded aluminum alloy. Higher pressures facilitate miniaturization of the product's insulation structure and also help reduce temperature rise.

[0003] As the proportion of new energy power generation such as wind and solar power gradually increases, products with high current ratings of 2500A and above can better meet the large single-unit capacity installation requirements of the new energy power generation field, possessing technological advantages. However, the thermal conductivity of environmentally friendly media such as air is relatively worse than that of SF6, the sealed enclosure makes heat dissipation conditions more severe, and the small volume of the tank-type shell also poses challenges to product temperature rise. Based on test results, temperature rise is already very difficult for tank-type environmentally friendly switchgear with a rated current of 2500A; the temperature rise problem for 3150A products will be even more severe.

[0004] Currently, to address the above issues, the primary approach is usually to optimize the main circuit of the gas-insulated metal-enclosed switchgear (GIS), such as increasing the conductor current-carrying cross-section, using a hollow conductor design, employing highly conductive alloy materials, and increasing the contact index; or optimizing the conductor shape to reduce heat generation. However, there are limits to reducing heat generation, and current heat dissipation solutions lack internal flow channel design, resulting in issues with heat exchange capacity. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure end cap type radiator and its working method, so as to solve the problem of poor heat exchange capacity caused by the lack of internal flow channel design in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, a high-pressure end cap type radiator includes: a heat dissipation shell and a gas guiding channel structure, the heat dissipation shell being airtightly connected to the GIS equipment tank, and an annular gap being formed between the heat dissipation shell and the gas guiding channel structure. The gas flow channel structure is divided into an upward channel and a downward channel. The upward channel and the downward channel are connected at the top inside the heat dissipation shell. The upward channel and the downward channel are staggered at the connection between the heat dissipation shell and the GIS equipment tank and are not connected to each other. One end of the upward channel is connected to the inner cavity of the GIS equipment tank, and the other end is connected to the downward channel at the top inside the heat dissipation shell. The downward channel is connected to the inner cavity of the GIS equipment tank through the annular gap.

[0007] In some embodiments, the gas flow channel structure includes a staggered hole assembly structure, an upper flow guide tube, and a lower flow guide tube. The staggered hole assembly structure is disposed between the upper and lower flow guide tubes. The upper flow guide tube is connected to the lower flow guide tube through the staggered hole assembly structure but they are not interconnected. One end of the upper flow guide tube is connected to the top of the interior of the heat dissipation shell, and the other end is connected to the inner cavity of the GIS equipment tank through the staggered hole assembly structure. One end of the lower flow guide tube is connected to the inner cavity of the GIS equipment tank, and the other end is connected to the annular gap through the staggered hole assembly structure.

[0008] In some embodiments, the staggered hole assembly structure consists of an upper guide flange and a lower guide flange staggered hole assembly, with the upper guide flange installed at the bottom of the upper guide cylinder and the lower guide flange installed at the top of the lower guide cylinder.

[0009] In some embodiments, the upper guide flange is provided with multiple upper guide inclined hole channels, and the lower guide flange is provided with multiple lower guide inclined hole channels. The upper guide inclined hole channels connect the inside of the GIS equipment tank and the upper guide cylinder, and the lower guide flange is provided with multiple lower guide inclined hole channels, which connect the annular gap and the lower guide cylinder.

[0010] In some embodiments, the heat dissipation housing includes a heat dissipation top cover and a housing flange. The heat dissipation top cover is welded to the top of the heat dissipation housing, and the housing flange is installed at the bottom of the heat dissipation housing. The heat dissipation housing is airtightly connected to the port of the GIS equipment tank through the housing flange.

[0011] In some embodiments, the heat dissipation housing is composed of multiple cylindrical heat dissipation modules. Each cylindrical heat dissipation module includes a hollow cylinder, inner fins, and outer fins. The inner fins are arranged along the inner circumference of the hollow cylinder, and the outer fins are arranged along the outer circumference of the hollow cylinder.

[0012] In some embodiments, the heat dissipation top cover is mounted on the cylindrical radiator module located at the top of the heat dissipation housing, and the housing flange is mounted on the cylindrical radiator module located at the bottom of the heat dissipation housing and fixed to the tank opening.

[0013] Secondly, a method for operating a high-pressure end-cap type radiator includes the following steps: The high-pressure hot airflow inside the tank of the GIS equipment enters the interior of the upper guide cylinder through the upper guide oblique hole channel of the upper guide flange, rises to the top of the heat dissipation shell, and is further cooled through the gap between the heat dissipation shell and the upper guide cylinder. It then flows downward into the lower guide oblique hole channel of the lower guide flange, enters the interior of the lower guide cylinder, and finally flows back into the tank of the GIS equipment.

[0014] Thirdly, a method for operating a high-pressure end cap type radiator includes the following steps: The high-pressure hot airflow inside the tank of the GIS equipment enters the interior of the upper guide cylinder through the upper guide oblique hole channel of the upper guide flange, and rises to the heat dissipation top cover of the heat dissipation shell. Cooling recirculation absorbs heat through the inner fins between the heat dissipation shell and the upper guide tube, while further cooling is achieved through the heat dissipation of the outer fins; After flowing downwards into the lower guide oblique hole channel of the lower guide flange, it enters the lower guide cylinder and eventually flows back into the tank of the GIS equipment.

[0015] In some implementations, the upper guide tube, upper guide flange, lower guide tube, and lower guide flange are all made of low thermal conductivity materials.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a high-pressure end-cap type radiator. The radiator shell is airtightly connected to the port of the GIS equipment tank. An annular gap is formed between the radiator shell and the gas flow channel structure. The end-cap type external installation method allows for communication between the high-pressure gas inside the tank and the radiator interior. This effectively reduces the overall temperature rise of the switchgear without modifying the main circuit, improves flow capacity, and is easy to install with versatility. Furthermore, the gas flow channel structure is divided into an ascending channel and a descending channel. The ascending and descending channels are connected at the top inside the radiator shell. They are staggered and not interconnected at the connection between the radiator shell and the GIS equipment tank. One end of the ascending channel connects to the inner cavity of the GIS equipment tank, and the other end connects to the descending channel at the top inside the radiator shell. The descending channel connects to the inner cavity of the GIS equipment tank through the annular gap. The ascending and descending channels are designed independently, allowing the high-pressure hot gas generated during operation in the switchgear to be accelerated and cooled back in the radiator, effectively reducing the overall temperature rise inside the tank-type gas-insulated switchgear and improving the heat exchange capacity of the switchgear.

[0017] Furthermore, the present invention, through the staggered hole mounting structure of the upper and lower guide flanges, can form separate airflow rising and falling channels, and through the upper and lower guide cylinders, an effective height difference and flow channel are formed, so that the high-pressure hot airflow generated during the operation of the switchgear can be accelerated to cool and return in the radiator, effectively reducing the overall temperature rise in the tank-type gas-insulated switchgear.

[0018] Furthermore, the heat dissipation housing of the present invention is composed of multiple cylindrical heat sink modules. Each cylindrical heat sink module includes a hollow cylinder, inner fins, and outer fins. The inner fins are arranged along the circumference of the inner wall of the hollow cylinder, and the outer fins are arranged along the circumference of the outer wall of the hollow cylinder. This structure enhances the heat exchange capacity of the heat dissipation housing through heat absorption by the inner fins and heat dissipation by the outer fins. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the high-pressure end cap type radiator provided in Embodiment 1 of the present invention; Figure 2 This is a cross-sectional view of a high-pressure end cap type radiator provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the gas guiding channel structure provided in Embodiment 1 of the present invention; Figure 4 This is a front view of the gas guiding channel structure provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the overall structure of the high-pressure end cap type radiator provided in Embodiment 2 of the present invention; Figure 6 This is a cross-sectional view of the high-pressure end cap type radiator provided in Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the cylindrical heat sink module provided in Embodiment 2 of the present invention; Figure 8 This is a top view of the cylindrical heat sink module provided in Embodiment 2 of the present invention; Figure 9 This is a schematic diagram of the installation of a high-pressure end cap type radiator on a GIS equipment tank according to an embodiment of the present invention; Figure 10 The diagrams provided in this embodiment of the invention are of an airflow ascending channel and an airflow descending channel, wherein (a) is a schematic diagram of the airflow ascending channel and (b) is a schematic diagram of the airflow descending channel.

[0020] In the diagram, 1. Heat dissipation shell; 2. Gas flow channel structure; 3. Upper guide tube; 4. Upper guide flange; 5. Lower guide flange; 6. Lower guide tube; 7. Cylindrical heat dissipation module; 8. Heat dissipation top cover; 9. Shell flange; 10. GIS equipment tank. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. The described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and descriptions are considered to be exemplary in nature and not restrictive.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0026] Currently, the heat dissipation fins of high-current gas-insulated switchgear are typically welded or fixed directly to the top of the equipment, lacking internal flow channel design. The heat dissipation fins mainly rely on natural convection for heat dissipation, resulting in low efficiency and failing to meet the heat dissipation requirements of high-current equipment. Furthermore, the heat dissipation fins occupy space on the top of the equipment, which may be structurally limited, leading to uneven heat distribution and excessively high temperatures in some areas, thus reducing the heat exchange capacity of the switchgear. In addition, some switchgear uses forced air cooling technology, which can significantly improve heat dissipation efficiency. However, forced air cooling fans require separate power supplies, increasing energy consumption and operating costs. Moreover, the reliability and lifespan of the fans can affect the overall reliability of the switchgear. Therefore, the embodiments of this application incorporate internal flow channel design without relying on fan power supply to improve the heat exchange capacity of the switchgear.

[0027] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a high-pressure end cap type radiator, which is vertically installed on the upper part of the GIS equipment tank 10. It includes a heat dissipation shell 1 and a gas guiding channel structure 2, both of which are hollow designs and filled with high-pressure environmentally friendly gas.

[0028] The heat sink housing 1 adopts a three-section metal welded structure, including a heat sink top cover 8 and a housing flange 9. The heat sink top cover 8 is welded to the top of the heat sink housing 1, and the housing flange 9 is installed at the bottom of the heat sink housing 1. Figure 9 As shown, the heat dissipation housing 1 is fixed to the port of the GIS equipment tank 10 via the housing flange 9, and has a corresponding sealing structure to meet the high pressure sealing requirements.

[0029] like Figure 3 and Figure 4 As shown, the gas guiding channel structure 2 includes an upper guiding cylinder 3, an upper guiding flange 4, a lower guiding cylinder 6, and a lower guiding flange 5. The upper guiding cylinder 3, the upper guiding flange 4, the lower guiding cylinder 6, and the lower guiding flange 5 are all made of low thermal conductivity materials. An upper guide flange 4 is installed at the bottom of the upper guide cylinder 3. Multiple upper guide inclined holes are provided on the upper guide flange 4. These upper guide inclined holes connect the interior of the GIS equipment tank 10 and the interior of the upper guide cylinder 3. The top of the upper guide cylinder 3 connects to the interior of the heat dissipation shell 1. This structure forms an airflow upward channel, such as... Figure 10 As shown in (a), Figure 10 The direction of the middle arrow indicates the direction of gas flow. The high-pressure hot gas flow inside the GIS equipment tank rises to the top of the heat dissipation shell 1 through the air flow rising channel. A lower guide flange 5 is installed at the top of the lower guide cylinder 6. Multiple lower guide oblique holes are provided on the lower guide flange 5. There is a gap between the upper guide cylinder 3 and the heat dissipation shell 1. The lower guide oblique holes connect the gap and the interior of the lower guide cylinder 6. The bottom end of the lower guide cylinder 6 connects to the interior of the GIS equipment tank 10. This structure forms a downward airflow channel, such as... Figure 10 As shown in (b), the high-pressure hot airflow at the top of the heat dissipation shell 1 flows back to the interior of the GIS equipment tank 10 through the airflow descending channel. During this process, the high-pressure hot airflow is cooled by the heat dissipation shell 1. The upper guide flow oblique hole channel is distributed circumferentially above the guide flow flange 4, and the lower guide flow oblique hole channel is distributed circumferentially below the guide flow flange 5.

[0030] The upper guide flange 4 and lower guide flange 5 are installed with a staggered hole structure. When they are joined, the holes of the upper and lower guide flanges 4 and 5 are staggered. Therefore, the upper guide oblique hole channel does not directly connect to the lower guide oblique hole channel in the vertical direction. This staggered arrangement helps optimize the gas flow path, reduce flow resistance, and improve heat dissipation efficiency. Since the upper and lower guide oblique hole channels are distributed circumferentially on the upper and lower guide flanges 4 and 5 respectively, and they are not directly connected, but rather connect to the rising and falling airflow channels respectively, this ensures that the rising and falling airflows are physically separated. Because the hot airflow and the cooled airflow follow different paths, energy loss during heat exchange is reduced, and temperature fluctuations and stress changes caused by the mixing of hot and cold air are avoided.

[0031] The working method of the high-pressure end cap type radiator provided in this embodiment is as follows: The high-pressure hot airflow inside the GIS equipment tank 10 enters the interior of the upper guide cylinder 3 through the upper guide oblique hole channel of the upper guide flange 4, and rises to the top of the heat dissipation shell 1. After being further cooled through the gap between the heat dissipation shell 1 and the upper guide tube 3, the cooling reflux flows downward into the lower guide oblique hole channel of the lower guide flange 5, enters the lower guide tube 6, and finally flows back into the GIS equipment tank 10.

[0032] The high-pressure end-cap type radiator provided in this embodiment is an externally mounted structure. It effectively reduces the overall temperature rise of the equipment and improves current carrying capacity without requiring modifications to the main circuit of the switchgear. It features modularity, versatility, and easy installation. For high-current environmentally friendly products, it can provide additional heat dissipation capacity based on the circuit design. Through the design of the gas flow channel structure 2, separate upward and downward airflow channels are formed, increasing the effective heat exchange area and effectively solving the high-current temperature rise problem of environmentally friendly products. The high-pressure end-cap type radiator provided in this embodiment adopts an externally mounted end-cap type installation method. It is installed on the upper part of the tank through the tank opening of the gas-insulated metal-enclosed switchgear, thereby allowing the high-pressure gas inside the tank to communicate with the interior of the radiator. An effective height difference and flow channel are formed by the upper guide tube 3 and the lower guide tube 6, allowing the high-pressure hot airflow generated during the operation of the switchgear to accelerate cooling and return within the radiator, thereby effectively reducing the overall temperature rise inside the tank-type gas-insulated switchgear.

[0033] Example 2 like Figure 5 and Figure 6 As shown, this embodiment provides a high-pressure end cap type radiator, including a heat dissipation shell 1 and a gas flow channel structure 2, both of which are hollow designs and filled with high-pressure environmentally friendly gas.

[0034] The heat dissipation shell 1 adopts a three-section metal welded structure, including a heat dissipation top cover 8 and a shell flange 9. The heat dissipation top cover 8 is welded to the top of the heat dissipation shell 1, and the shell flange 9 is installed at the bottom of the heat dissipation shell 1. The heat dissipation shell 1 is fixed to the port of the GIS equipment tank 10 through the shell flange 9, and has a corresponding sealing structure to meet the high pressure sealing requirements.

[0035] like Figure 7 and Figure 8 As shown, the heat dissipation housing 1 is welded together from four cylindrical heat dissipation modules 7. Each cylindrical heat dissipation module 7 includes a hollow cylinder, inner fins, and outer fins. The inner fins are arranged along the inner circumference of the hollow cylinder, and the outer fins are arranged along the outer circumference of the hollow cylinder. The cylindrical heat dissipation module 7 is manufactured using a casting process, and the welded cylindrical heat dissipation modules 7 are combined with the heat dissipation top cover 8 and the housing flange 9 into a single unit.

[0036] The heat dissipation top cover 8 is installed on the cylindrical radiator module 7 located at the top of the heat dissipation shell 1, and the shell flange 9 is installed on the cylindrical radiator module 7 located at the bottom of the heat dissipation shell 1 and fixed to the port of the GIS equipment tank 10.

[0037] The gas flow channel structure 2 includes an upper flow guide cylinder 3, an upper flow guide flange 4, a lower flow guide cylinder 6, and a lower flow guide flange 5. The upper flow guide flange 4 and the lower flow guide flange 5 are installed in a staggered hole mounting structure. The upper flow guide cylinder 3, the upper flow guide flange 4, the lower flow guide cylinder 6, and the lower flow guide flange 5 are all made of low thermal conductivity materials. The upper flow guide flange 4 is installed at the bottom end of the upper flow guide cylinder 3. The upper flow guide flange 4 is provided with multiple upper flow guide inclined hole channels. The upper flow guide inclined hole channels connect the inside of the GIS equipment tank 10 and the inside of the upper flow guide cylinder 3. The top end of the upper flow guide cylinder 3 connects to the inside of the heat dissipation shell 1. The lower flow guide flange 5 is installed at the top end of the lower flow guide cylinder 6. The lower flow guide flange 5 is provided with multiple lower flow inclined hole channels. There is a gap between the upper flow guide cylinder 3 and the heat dissipation shell 1. The lower flow guide inclined hole channels connect the gap and the inside of the lower flow guide cylinder 6. The bottom end of the lower flow guide cylinder 6 connects to the inside of the GIS equipment tank 10.

[0038] The working method of the high-pressure end cap type radiator provided in this embodiment is as follows: The high-pressure hot airflow inside the GIS equipment tank 10 enters the interior of the upper guide cylinder 3 through the upper guide oblique hole channel of the upper guide flange 4, and rises to the heat dissipation top cover 8 of the heat dissipation shell 1. The cooling return flow absorbs heat through the inner fins between the heat dissipation housing 1 and the upper guide tube 3, and simultaneously dissipates heat through the outer fins. After flowing downwards into the lower guide flange 5 through the lower guide inclined hole channel, it enters the lower guide cylinder 6 and eventually flows back into the GIS equipment tank 10.

[0039] Based on Embodiment 1, this embodiment adds a cylindrical radiator module 7 to the heat dissipation housing 1. Inner fins are provided on the inner wall of the hollow cylinder, and outer fins are provided on the outer wall of the hollow cylinder. By absorbing heat through the inner fins and dissipating heat through the outer fins, the heat exchange capacity of the radiator in Embodiment 1 can be further improved.

[0040] As is known from common technical knowledge, the present invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones; all modifications within the scope of the present invention or equivalent to the scope of the present invention are included in the present invention.

Claims

1. A high-pressure end-cap type radiator, characterized in that, include: The heat dissipation shell (1) and the gas flow channel structure (2) are connected in an airtight manner to the pull-out of the GIS equipment tank, and an annular gap is formed between the heat dissipation shell (1) and the gas flow channel structure (2). The gas flow channel structure (2) is divided into an upward channel and a downward channel. The upward channel and the downward channel are connected at the top inside the heat dissipation shell (1). The upward channel and the downward channel are staggered at the connection between the heat dissipation shell (1) and the GIS equipment tank and are not connected to each other. One end of the upward channel is connected to the inner cavity of the GIS equipment tank, and the other end is connected to the downward channel at the top inside the heat dissipation shell (1). The downward channel is connected to the inner cavity of the GIS equipment tank through the annular gap. The gas flow channel structure (2) includes a staggered hole mounting structure, an upper flow guide cylinder (3) and a lower flow guide cylinder (6). The staggered hole mounting structure is set between the upper flow guide cylinder (3) and the lower flow guide cylinder (6). The upper flow guide cylinder (3) is connected to the lower flow guide cylinder (6) through the staggered hole mounting structure and they are not connected to each other. One end of the upper flow guide cylinder (3) is connected to the top of the heat dissipation shell (1) and the other end is connected to the inner cavity of the GIS equipment tank through the staggered hole mounting structure. One end of the lower flow guide cylinder (6) is connected to the inner cavity of the GIS equipment tank and the other end is connected to the annular gap through the staggered hole mounting structure. The staggered hole mounting structure is composed of an upper guide flange (4) and a lower guide flange (5) with staggered holes. The upper guide flange (4) is installed at the bottom of the upper guide cylinder (3), and the lower guide flange (5) is installed at the top of the lower guide cylinder (6). Multiple upper guide inclined hole channels are provided on the upper guide flange (4), and multiple lower guide inclined hole channels are provided on the lower guide flange (5). The upper guide inclined hole channels connect the inside of the GIS equipment tank and the upper guide cylinder (3), and the lower guide inclined hole channels connect the annular gap and the lower guide cylinder (6).

2. The high-pressure head-type radiator according to claim 1, wherein The heat dissipation shell (1) includes a heat dissipation top cover (8) and a shell flange (9). The heat dissipation top cover (8) is welded to the top of the heat dissipation shell (1), and the shell flange (9) is installed at the bottom of the heat dissipation shell (1). The heat dissipation shell (1) is airtightly connected to the port of the GIS equipment tank through the shell flange (9).

3. A high-pressure end-cap type radiator according to claim 2, characterized in that, The heat dissipation housing (1) is composed of multiple cylindrical heat dissipation modules (7). The cylindrical heat dissipation module (7) includes a hollow cylinder, inner fins and outer fins. The inner fins are arranged along the inner circumference of the hollow cylinder, and the outer fins are arranged along the outer circumference of the hollow cylinder.

4. A high-pressure end-cap type radiator according to claim 3, characterized in that, The heat dissipation top cover (8) is installed on the cylindrical radiator module (7) located at the top of the heat dissipation shell (1), and the shell flange (9) is installed on the cylindrical radiator module (7) located at the bottom of the heat dissipation shell (1) and fixed on the tank opening.

5. A method for operating a high-pressure end-cap type radiator, characterized in that, A high-pressure end cap type radiator according to any one of claims 1 to 2 includes the following steps: The high-pressure hot airflow inside the tank of the GIS equipment enters the interior of the upper guide cylinder (3) through the upper guide oblique hole channel of the upper guide flange (4), and rises to the top of the heat dissipation shell (1). The cooling return flows through the gap between the heat dissipation shell (1) and the upper guide tube (3), flows downward into the lower guide oblique hole channel of the lower guide flange (5), enters the lower guide tube (6), and finally flows back to the tank of the GIS equipment.

6. A method for operating a high-pressure end-cap type radiator, characterized in that, A high-pressure end cap type radiator according to any one of claims 3 to 4 includes the following steps: The high-pressure hot airflow inside the tank of the GIS equipment enters the interior of the upper guide cylinder (3) through the upper guide oblique hole channel of the upper guide flange (4), and rises to the heat dissipation top cover (8) of the heat dissipation shell (1). The cooling return flow absorbs heat through the inner fins between the heat dissipation shell (1) and the upper guide tube (3), and dissipates heat through the outer fins. After flowing downwards into the lower guide oblique hole channel of the lower guide flange (5), it enters the lower guide cylinder (6) and finally flows back into the tank of the GIS equipment.

7. The operating method of a high-pressure end-cap type radiator according to claim 5 or 6, characterized in that, The upper guide tube (3), upper guide flange (4), lower guide tube (6) and lower guide flange (5) are all made of low thermal conductivity materials.

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