A heat dissipation structure of an environmentally friendly gas insulated switch cabinet

Abstract

The application relates to a heat dissipation structure of an environmentally-friendly gas insulated switch cabinet, and belongs to the technical field of gas insulated switch cabinets. The heat dissipation structure comprises an inner disturbance assembly, a gas tank matched with the inner disturbance assembly, the inner disturbance assembly comprises a disturbance fan blade and a disturbance motor for driving the disturbance fan blade to rotate, the disturbance fan blade is rotationally installed in the gas tank, and the disturbance fan blade blows air towards a live electrical element in the gas tank. The application has the effect of better adapting the structure of the gas insulated switch cabinet to perform heat dissipation.

Description

Technical Field

[0001] This application relates to the field of gas-insulated switchgear, and in particular to a heat dissipation structure for an environmentally friendly gas-insulated switchgear. Background Technology

[0002] The high-voltage switchgear involved in this patent is an AC high-voltage switchgear with a rated voltage level of 3.6kV to 40.5kV and a rated frequency of 50Hz. It is suitable for power distribution systems in power plants, substations, industrial and mining enterprises, residential areas, high-rise buildings, schools, parks, and other places, serving as a high-voltage switchgear for receiving and distributing electrical energy, and for controlling, protecting, and detecting circuits.

[0003] Gas-insulated high-voltage switchgear is a metal-enclosed high-voltage switchgear that uses gas insulation. The rated voltage level involved in this patent is 3.6kV to 40.5kV. The main characteristic of this type of equipment is that the live electrical components required for the high-voltage primary circuit are completely sealed in a gas box filled with insulating gas. The insulating gas is mostly low-pressure SF6 gas, N2 gas or a mixture of gases as the insulating medium.

[0004] SF6 gas is a greenhouse gas with a significant and long-lasting greenhouse effect. Leakage of the insulating gas in switchgear can have a substantial impact on the environment. To avoid these problems, environmentally friendly gas-insulated high-voltage switchgear has emerged. However, ensuring the airtightness of the gas chamber is essential during equipment commissioning. Therefore, controlling the leakage of insulating gas within the switchgear is a crucial step. During operation, the switchgear inevitably generates heat, especially in areas where live electrical components are concentrated and cannot be exposed to the atmosphere, significantly reducing heat dissipation. This heat accumulation and difficulty in heat dissipation necessitates additional heat dissipation mechanisms to guide the heat away from the gas chamber.

[0005] Due to the airtightness requirements of the aforementioned air box, traditional airflow-based heat dissipation is not feasible. A more suitable heat dissipation structure is needed to dissipate heat without compromising the air box's sealing performance. Utility Model Content

[0006] To better adapt to the structure of gas-insulated switchgear for heat dissipation, this application provides a heat dissipation structure for environmentally friendly gas-insulated switchgear.

[0007] The heat dissipation structure of the environmentally friendly gas-insulated switchgear provided in this application adopts the following technical solution:

[0008] A heat dissipation structure for an environmentally friendly gas-insulated switchgear includes an internal disturbance component and a gas box for mounting the internal disturbance component. The internal disturbance component includes disturbance fan blades and a disturbance motor for driving the disturbance fan blades to rotate. The disturbance fan blades are rotatably mounted inside the gas box and blow air towards the charged electrical components inside the gas box.

[0009] By adopting the above technical solution, the gas inside the gas box is disturbed by the internal disturbance component, causing the gas inside the gas box to flow continuously. The flowing gas carries away the heated gas at the electrical components, thereby better completing the heat exchange at the electrical components. At the same time, the heat is continuously carried to the gas box wall. In this process, the heat transfer to the gas box wall is completed. The gas box wall adopts a concave-convex structure design to increase the heat dissipation area and achieve greater heat dissipation efficiency. Finally, the rapid heat dissipation process is achieved through the reciprocating circulation of the gas inside the gas box. This design structure does not require additional drilling on the gas box wall to install the fan shaft sealing structure, ensuring the airtight structure requirement of the gas box itself and achieving an ideal state with better heat dissipation effect.

[0010] Optionally, a strong magnetic sheet connection structure is provided between the disturbance motor and the disturbance fan blade. The disturbance motor and the disturbance fan blade are not directly connected and are separated by the stainless steel air box wall with non-magnetic effect function of the air box.

[0011] By adopting the above technical solution, the installation of the disturbance motor and the disturbance fan blade will not affect the airtightness of the gas box, and it is better adapted to the airtight structure of the gas-insulated switch cabinet. At the same time, the disturbance motor is located outside the gas box, which makes maintenance more convenient. Only the disturbance fan blade is located inside the gas box, but there is no problem with the connection of the power supply line. Moreover, the disturbance fan blade itself is not easily damaged, meeting the requirements of lifetime maintenance-free and repair-free characteristics.

[0012] Optionally, the strong magnetic sheet association structure includes an inner magnetic block and an outer magnetic block. The outer magnetic block is installed at the output end of the disturbance motor, and the inner magnetic block is installed on the disturbance fan blade. The inner magnetic block and the outer magnetic block form a magnetic association, and the inner magnetic block and the outer magnetic block do not directly contact the stainless steel air box wall.

[0013] By adopting the above technical solution, the inner and outer magnetic blocks are separated from the stainless steel air box wall without magnetic effect and do not come into contact with each other. This ensures that when the external disturbance motor rotates, the inner and outer magnetic blocks do not generate frictional resistance with the stainless steel air box wall without magnetic effect, and there is no frictional heat generation. The magnetic force generated by the inner and outer magnetic blocks can penetrate the stainless steel air box wall without magnetic effect and attract each other, forming an adhesive characteristic. When the disturbance motor rotates, it drives the outer magnetic block on the disturbance motor to rotate along the main shaft of the motor, and through the magnetic force, it drives the inner magnetic block on the inner disturbance fan blade to rotate along the main shaft of the inner disturbance fan blade, thereby causing the disturbance fan blade to rotate and generate wind.

[0014] Optionally, the disturbance fan blades are installed at the bottom of the air box.

[0015] By adopting the above technical solution, the disturbance fan blades are installed at the bottom. Since hot gas rises and cold gas sinks, the disturbance fan blades at the bottom can better blow the cold gas to the electrical components for heat dissipation, resulting in better heat dissipation.

[0016] In summary, by agitating the gas inside the gas chamber using internal disturbance components, the gas flows continuously. This flowing gas carries away the heated gas from the electrical components, thus improving heat exchange at these components. Simultaneously, heat is continuously transferred to the gas chamber walls, achieving heat dissipation to a certain extent. Ultimately, the reciprocating circulation of gas within the gas chamber enables rapid heat dissipation while also meeting the requirements of the gas chamber's sealed structure, resulting in excellent heat dissipation performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the heat dissipation structure in the embodiments of this application;

[0018] Figure 2 This is a schematic diagram of the internal disturbance component in the embodiments of this application.

[0019] Explanation of reference numerals in the attached drawings: 1. Inner disturbance assembly; 11. Mounting box; 111. Inner turntable; 112. Inner magnetic block; 113. Outer turntable; 114. Outer magnetic block; 12. Disturbance fan blade; 121. Blade; 122. Shaft; 13. Disturbance motor; 3. Air box; 4. Electrically charged components; 5. Rotating shaft. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0021] This application discloses a heat dissipation structure for an environmentally friendly gas-insulated switchgear.

[0022] Reference Figure 1 and Figure 2 A heat dissipation structure for an environmentally friendly gas-insulated switchgear includes an internal disturbance component 1 and a gas box 3 for mounting the internal disturbance component 1. The gas box 3 is a sealed structure and is filled with environmentally friendly gas. A live electrical component 4 is installed inside the gas box 3 to realize the circuit breaking and various functions of the switchgear. The operation of the live electrical component 4 is controlled by one or more rotating shafts 5, one end of which passes through the gas box 3 and is located outside the gas box 3.

[0023] Meanwhile, the three walls of the air box adopt a concave-convex structure to increase the heat dissipation area.

[0024] The internal disturbance component 1 is installed inside the gas box 3. The internal disturbance component 1 is used to drive the gas inside the gas box 3 to flow. The heat in the gas is quickly transferred to the wall of the gas box 3. The internal disturbance component 1 is installed on the inner wall of the lower side of the gas box 3 to blow air onto the charged electrical components 4 inside the gas box.

[0025] The internal disturbance component 1 includes a disturbance fan blade 12 and a disturbance motor 13 that drives the disturbance fan blade 12 to rotate. A strong magnetic sheet connection structure is provided between the disturbance motor 13 and the disturbance fan blade 12. The disturbance motor 13 and the disturbance fan blade 12 are not directly connected. Specifically, the disturbance fan blade 12 is installed on the inner wall of the air box 3 through a mounting box 11. The mounting box 11 and the air box 3 can be fixed by screws or welding. The mounting box 11 is hollow inside and is open from top to bottom. The disturbance fan blade 12 includes a blade 121 and a shaft 122. One end of the shaft 122 is located inside the mounting box 11 and is fixed to the mounting box 11 by two bearings. The other end is located outside the mounting box 11. The blade 121 is installed at the end of the shaft 122 located outside the mounting box 11.

[0026] The strong magnetic sheet associated structure includes an inner turntable 111, an inner magnetic block 112, an outer turntable 113, and an outer magnetic block 114. The inner turntable 111 is mounted and fixed on a section of the shaft 122 located inside the mounting box 11. The inner magnetic block 112 is mounted on the outer ring of the inner turntable 111 facing away from the shaft 122. The disturbance motor 13 is mounted outside the air box 3 and can be fixed by an external block. The motor shaft of the disturbance motor 13 faces the position of the shaft 122 inside the air box 3. The outer turntable 113 is mounted and fixed on the motor shaft of the disturbance motor 13. The outer magnetic block 114 is mounted on the outer ring of the outer turntable 113 facing away from the surface of the disturbance motor 13, and the outer magnetic block 114 and the inner magnetic block 112 correspond to the wall of the air box 3, thereby realizing the function of the disturbance motor 13 energizing and disturbing the rotation of the fan blade 12.

[0027] Specifically, the wall of the air box 3 is made of stainless steel with no magnetic effect. The inner magnetic block 112 and the outer magnetic block 114 do not directly contact the stainless steel air box 3 wall. That is, there is a certain gap between the inner magnetic block 112 and the outer magnetic block 114 and the stainless steel air box 3 wall. The state in which the inner magnetic block 112 and the outer magnetic block 114 are separated from the stainless steel air box 3 wall with no magnetic effect ensures that no frictional resistance is generated between the inner magnetic block 112 and the outer magnetic block 114 and the stainless steel air box 3 wall with no magnetic effect when the outer disturbance motor 13 rotates, and no frictional heat generation is generated. The magnetic force generated by the inner magnetic block 112 and the outer magnetic block 114 can penetrate the stainless steel air box 3 wall with no magnetic effect and attract each other, forming an adhesive characteristic. When the disturbance motor 13 rotates, it drives the outer magnetic block 114 on the disturbance motor 13 to rotate along the motor main shaft, and through the magnetic force, it drives the inner magnetic block 112 on the inner disturbance fan blade to rotate along the main shaft of the inner disturbance fan blade, thereby disturbing the fan blade to rotate and generating wind.

[0028] The implementation principle of the heat dissipation structure of an environmentally friendly gas-insulated switchgear according to the embodiments of this application is as follows: by continuously driving the hot gas in the gas box 3 to the corresponding position on the inner wall of the gas box 3 for heat transfer, the concave and convex structure of the gas box 3 wall accelerates the heat dissipation.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat dissipation structure for an environmentally friendly gas-insulated switchgear, characterized in that: The system includes an internal disturbance component (1) and an air box (3) for mounting the internal disturbance component (1). The internal disturbance component (1) includes a disturbance fan blade (12) and a disturbance motor (13) for driving the disturbance fan blade (12) to rotate. The disturbance fan blade (12) is rotatably mounted inside the air box (3) and blows air towards the charged electrical components (4) inside the air box (3). A strong magnetic sheet connection structure is provided between the disturbance motor (13) and the disturbance fan blade (12), and the disturbance motor (13) and the disturbance fan blade (12) are not directly connected. The stainless steel gas box (3) wall of the gas box (3) is separated from the gas box (3) by the non-magnetic effect function and does not directly contact the stainless steel gas box (3) wall; the strong magnetic sheet association structure includes an inner magnetic block (112) and an outer magnetic block (114). The outer magnetic block (114) is installed at the output end of the disturbance motor (13), and the inner magnetic block (112) is installed on the disturbance fan blade (12). The inner magnetic block (112) and the outer magnetic block (114) form a magnetic association, and the inner magnetic block (112) and the outer magnetic block (114) do not directly contact the stainless steel gas box (3) wall.

2. The heat dissipation structure of an environmentally friendly gas-insulated switchgear according to claim 1, characterized in that: The disturbance fan blade (12) is installed at the bottom inside the air box (3).

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