Electric field fan variable winding insulation enhancement device

Abstract

The application relates to an electric field fan variable-winding insulation reinforcing device and relates to the technical field of electric field fans, which comprises a winding main body, and a polyimide film is fixedly installed on the outer side of the winding main body. The polyimide film can effectively improve the insulation capacity of the outer side of the winding main body, thereby reducing the influence of an electric field on insulation materials, and a heat conduction assembly can timely lead out the heat generated during the working of the winding main body, alleviates the problem that the insulation materials are accelerated to age due to heat accumulation, and a sealing assembly forms a closed inert gas environment, completely blocks the erosion of external dust and moisture on the insulation materials, cooperates with a silicon rubber buffer layer to absorb electromagnetic vibration and mechanical impact stress in the operation of the fan, prevents the insulation layer from generating microcracks due to fatigue, and a silicon carbide coating covers the outermost layer, continuously leads out the static charges accumulated on the surface, and the two further protect the winding main body, and improve the operation stability and service life of the electric field fan.

Description

Technical Field

[0001] This application relates to the field of electric field fan technology, and in particular to an electric field fan variable winding insulation enhancement device. Background Technology

[0002] During the operation of electric field wind turbines, the windings are a critical component, and their performance directly affects the overall efficiency and stability of the turbine. The windings not only bear the heavy responsibility of electrical energy transmission and conversion but also need to operate stably and continuously in a complex electromagnetic environment. Therefore, effective insulation protection and heat dissipation treatment of the windings are crucial to ensuring the efficient and reliable operation of electric field wind turbines.

[0003] However, in the existing technology, during long-term operation, the windings of electric field fans are susceptible to the combined effects of electric field, thermal field and mechanical stress, which leads to the gradual aging and performance degradation of the insulation material, which in turn causes insulation failure and affects the normal operation of the fan. At the same time, the windings generate a lot of heat when working. If the heat cannot be dissipated in a timely and effective manner, the winding temperature will continue to rise, accelerating the aging of the insulation material and further reducing the insulation performance, forming a vicious cycle. Summary of the Invention

[0004] Technical problems to be solved

[0005] The purpose of this application is to provide an insulation enhancement device for the winding of an electric field fan. By using a polyimide film in conjunction with a heat-conducting component, the insulation capacity of the outer side of the winding body can be improved, thereby reducing the influence of the electric field on the insulation material and timely dissipating the heat generated by the winding body during operation. This alleviates the problem of accelerated aging of the insulation material caused by heat accumulation, and solves the problems mentioned in the background art.

[0006] The present application provides an insulation enhancement device for an electric field wind turbine winding, which adopts the following technical solution: It includes a winding body, a polyimide film fixedly installed on the outer side of the winding body, and multiple circumferentially arrayed heat-conducting components arranged on the outer side of the polyimide film. Each heat-conducting component includes a heat-conducting ceramic sheet fixedly embedded inside the polyimide film. A sealing component is arranged on the outer side of the winding body, and the sealing component includes a sealing box fixedly connected to the outer side of the winding body. Multiple heat dissipation ducts are fixedly embedded inside the sealing box, and the heat dissipation ducts are in close contact with the heat-conducting ceramic sheet. A silicone rubber buffer layer is fixedly connected to the outer side of the sealing box, and a silicon carbide coating is fixedly connected to the outer side of the silicone rubber buffer layer.

[0007] By adopting the above technical solution and using the polyimide film, the insulation capacity of the outer side of the winding body can be effectively improved, thereby reducing the influence of the electric field on the insulation material. At the same time, the heat-conducting component can dissipate the heat generated by the winding body during operation in a timely manner, alleviating the problem of accelerated aging of the insulation material caused by heat accumulation. Furthermore, the sealing component forms a closed inert gas environment, completely blocking the corrosion of the insulation material by external dust and moisture. Combined with the silicone rubber buffer layer, it absorbs the electromagnetic vibration and mechanical impact stress during the operation of the fan, preventing the insulation layer from developing micro-cracks due to fatigue and ensuring the stability of the insulation layer.

[0008] Preferably, the outer side of the thermally conductive ceramic sheet is in contact with the outer side of the winding body, and the thermally conductive ceramic sheet and the winding body are fixedly connected by thermally conductive adhesive.

[0009] By adopting the above technical solution, the above-mentioned thermally conductive ceramic sheet is in direct contact with the winding body and is fixedly connected by thermally conductive adhesive to form an efficient heat conduction path, which quickly conducts the heat generated by the winding body during operation to the outer heat dissipation structure, avoids high-temperature damage to the insulation material caused by local heat accumulation, and enhances the heat dissipation capacity of the winding.

[0010] Preferably, the outer side of the thermally conductive ceramic sheet is fixedly connected with a plurality of equidistantly arranged thermally conductive fins, and the outer side of the thermally conductive fins extends through the outer side of the heat dissipation duct and into the interior of the heat dissipation duct.

[0011] By adopting the above technical solution, the heat-conducting fins on the outside of the heat-conducting ceramic sheet extend into the interior of the heat dissipation duct, increasing the contact area with the airflow inside the heat dissipation duct. This allows for more efficient transfer of heat to the airflow inside the heat dissipation duct, which then carries away the heat, enhancing the heat dissipation effect of the device and slowing down the aging rate of the insulating material caused by high temperature.

[0012] Preferably, the sealing assembly completely covers the winding body, the polyimide film, and the thermally conductive assembly, and the inside of the sealing box is filled with an inert gas.

[0013] By adopting the above technical solution, the sealing component completely covers the winding body, polyimide film and heat-conducting components, and the inside of the sealing box is filled with inert gas, which can isolate harmful substances in the external environment, reduce the combined effect of electric field, mechanical stress and other factors on the winding body, and at the same time, the inert gas environment can inhibit the oxidation reaction of the insulating material, further improve the insulation performance and extend the service life of the winding.

[0014] Preferably, a pressure regulating valve is fixedly installed on the upper side of the sealed box, and the port of the pressure regulating valve is connected to an external gas storage tank.

[0015] By adopting the above technical solution, the gas can be replenished or released in a timely manner according to the gas pressure in the sealed box through the gas pressure regulating valve on the upper side of the sealed box, so as to maintain the gas pressure stability in the sealed box, ensure the reliability of the inert gas environment, and provide stable protection conditions for the winding body.

[0016] Preferably, a second pressure sensor is fixedly installed on the inner side of the sealed box, and a first pressure sensor is fixedly installed on the outer side of the sealed box.

[0017] By adopting the above technical solution, the second and first air pressure sensors can monitor the air pressure inside and outside the sealed box in real time, providing accurate data support for the adjustment of the air pressure regulating valve, ensuring that the air pressure inside the sealed box is always within a suitable range, and enhancing the stability and reliability of the device.

[0018] Preferably, the pressure regulating valve is electrically connected to the external controller, and both the second pressure sensor and the first pressure sensor are electrically connected to the external controller.

[0019] By adopting the above technical solution, the pressure regulating valve, the second pressure sensor, and the first pressure sensor are electrically connected to the external controller, realizing automated control of the pressure inside the sealed box without manual intervention, improving the intelligence level and working efficiency of the device, and ensuring the timeliness and accuracy of pressure regulation.

[0020] Preferably, the airflow direction of the heat dissipation duct is set in the same direction as the main airflow direction of the external fan.

[0021] By adopting the above technical solution, the airflow direction of the heat dissipation duct is set in the same direction as the main airflow direction of the external fan. This can enhance the airflow speed in the heat dissipation duct with the help of the main airflow of the external fan, improve the heat dissipation efficiency, and allow heat to be carried away more quickly. This further improves the heat dissipation conditions of the winding body and reduces the adverse effects of temperature on the insulation material.

[0022] Beneficial effects

[0023] This electric field fan winding insulation enhancement device effectively improves the insulation capacity of the outer side of the winding body by setting a polyimide film, thereby reducing the impact of the electric field on the insulation material. At the same time, the heat-conducting component can promptly dissipate the heat generated by the winding body during operation, alleviating the problem of accelerated aging of the insulation material caused by heat accumulation. Furthermore, the sealing component forms a closed inert gas environment, completely blocking the corrosion of the insulation material by external dust and moisture. Combined with the silicone rubber buffer layer to absorb the electromagnetic vibration and mechanical impact stress during the operation of the fan, it prevents the insulation layer from developing micro-cracks due to fatigue. In addition, the silicon carbide coating covers the outermost layer, continuously dissipating the static charge accumulated on the surface and eliminating the risk of arc discharge. Both of these further protect the winding body and improve the operational stability and service life of the electric field fan. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0025] Figure 2 This is a schematic diagram of the internal three-dimensional structure of this application;

[0026] Figure 3 This is a three-dimensional structural diagram of the winding body, polyimide film, and thermal conductive components of this application;

[0027] Figure 4 This is a three-dimensional structural diagram of the sealing assembly and heat dissipation duct of this application;

[0028] Figure 5 This is a three-dimensional structural diagram of the thermal conductive component of this application.

[0029] In the picture:

[0030] 1. Winding body; 2. Polyimide film; 3. Thermal conductive component; 301. Thermal conductive ceramic sheet; 302. Thermal conductive fins; 4. Sealing component; 401. Sealing box; 402. Air pressure regulating valve; 403. First air pressure sensor; 404. Second air pressure sensor; 5. Silicon rubber buffer layer; 6. Silicon carbide coating; 7. Heat dissipation duct. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0032] Example 1: An insulation enhancement device for the transformer winding of an electric field fan, please refer to... Figure 1 , Figure 3 and Figure 5The winding body 1 includes a winding body 1, on the outside of which a polyimide film 2 is fixedly mounted. The polyimide film 2 has excellent insulation properties, effectively improving the insulation capacity of the outer side of the winding body 1 and reducing the influence of the electric field on the insulation material. Multiple circumferentially arrayed heat-conducting components 3 are arranged on the outer side of the polyimide film 2. These heat-conducting components 3 can promptly dissipate the heat generated by the winding body 1 during operation, alleviating the problem of accelerated aging of the insulation material due to heat accumulation. The heat-conducting components 3 include a heat-conducting ceramic sheet 301 fixedly embedded inside the polyimide film 2. The outer side of the heat-conducting ceramic sheet 301 is in contact with the outer side of the winding body 1. The heat-conducting ceramic sheet 301 and the winding body 1 are fixedly connected by thermally conductive adhesive. 1. Direct contact and fixed connection through thermally conductive adhesive form an efficient heat conduction path, which quickly conducts the heat generated by the winding body 1 during operation to the external heat dissipation structure, avoiding high-temperature damage to the insulation material caused by local heat accumulation, and enhancing the heat dissipation capacity of the winding. Multiple equidistantly arranged thermally conductive fins 302 are fixedly connected to the outside of the thermally conductive ceramic sheet 301, and the outside of the thermally conductive fins 302 extends through the outside of the heat dissipation duct 7 to the inside of the heat dissipation duct 7. The thermally conductive fins 302 on the outside of the thermally conductive ceramic sheet 301 extend into the inside of the heat dissipation duct 7, which increases the contact area with the airflow in the heat dissipation duct 7, and can more efficiently transfer heat to the airflow in the heat dissipation duct 7. With the help of the airflow, the heat is carried away, which enhances the heat dissipation effect of the device and slows down the aging rate of the insulation material caused by high temperature.

[0033] Please refer to Figure 2 , Figure 3 and Figure 4 A sealing assembly 4 is provided on the outer side of the winding body 1. The sealing assembly 4 includes a sealing box 401 fixedly connected to the outer side of the winding body 1. Multiple heat dissipation ducts 7 are fixedly embedded on the inner side of the sealing box 401. The heat dissipation ducts 7 are in close contact with the heat-conducting ceramic sheet 301. A silicone rubber buffer layer 5 is fixedly connected to the outer side of the sealing box 401. The sealing assembly 4 forms a closed inert gas environment, which completely blocks the corrosion of the insulation material by external dust and moisture. Together with the silicone rubber buffer layer 5, it absorbs the electromagnetic vibration and mechanical impact stress during the operation of the fan, prevents the insulation layer from developing micro-cracks due to fatigue, and ensures the insulation layer To ensure stability, a silicon carbide coating 6 is fixedly connected to the outer side of the silicone rubber buffer layer 5. The silicon carbide coating 6 covers the outermost layer and continuously discharges the static charge accumulated on the surface, eliminating the risk of arc discharge. The airflow direction of the heat dissipation duct 7 is set in the same direction as the main airflow direction of the external fan. The airflow direction of the heat dissipation duct 7 is set in the same direction as the main airflow direction of the external fan. This can enhance the airflow speed in the heat dissipation duct 7 with the help of the main airflow of the external fan, improve the heat dissipation efficiency, and allow the heat to be carried away more quickly. This further improves the heat dissipation conditions of the winding body 1 and reduces the adverse effects of temperature on the insulation material.

[0034] Example 2: An insulation enhancement device for the transformer winding of an electric field fan, please refer to... Figure 2 and Figure 4 The sealing assembly 4 completely encloses the winding body 1, the polyimide film 2, and the heat-conducting assembly 3. The inside of the sealing box 401 is filled with inert gas. This complete enclosure of the winding body 1, polyimide film 2, and heat-conducting assembly 3, along with the inert gas filling, isolates the winding body 1 from harmful substances in the external environment, reducing the combined effects of electric fields and mechanical stress on the winding body 1. Simultaneously, the inert gas environment inhibits the oxidation reaction of the insulating material, further improving insulation performance and extending the winding's service life. A pressure regulating valve 402 is fixedly installed on the upper side of the sealing box 401. The port of the pressure regulating valve 402 is connected to an external gas storage tank. Through this connection, gas can be replenished or released promptly according to the pressure inside the sealing box 401, maintaining a stable pressure and ensuring the reliability of the inert gas environment, thus providing a stable environment for the winding body 1. For stable protection, a second pressure sensor 404 is fixedly installed inside the sealed box 401, and a first pressure sensor 403 is fixedly installed outside the sealed box 401. The second pressure sensor 404 and the first pressure sensor 403 can monitor the air pressure inside and outside the sealed box 401 in real time, providing accurate data support for the adjustment of the pressure regulating valve 402, ensuring that the air pressure inside the sealed box 401 is always within a suitable range, and enhancing the stability and reliability of the device. The pressure regulating valve 402 is electrically connected to an external controller, and both the second pressure sensor 404 and the first pressure sensor 403 are electrically connected to the external controller. The above-mentioned electrical connection of the pressure regulating valve 402, the second pressure sensor 404, and the first pressure sensor 403 to the external controller realizes the automated control of the air pressure inside the sealed box 401 without manual intervention, improving the intelligence level and working efficiency of the device, and ensuring the timeliness and accuracy of air pressure regulation.

[0035] The implementation principle of this application embodiment is as follows: When the winding body 1 of the electric field fan is working, the heat generated is first transferred to the thermally conductive ceramic sheet 301 in close contact with it through the thermally conductive adhesive. At this time, the thermally conductive fins 302 on the outside of the thermally conductive ceramic sheet 301 transfer the heat to the airflow in the heat dissipation duct 7. At this time, the airflow direction of the heat dissipation duct 7 is in the same direction as the main airflow direction of the external fan, thereby accelerating the flow speed of the airflow in the heat dissipation duct 7, thus efficiently removing heat and realizing heat dissipation of the winding body 1. At the same time, the polyimide film 2 is wrapped around the outside of the winding body 1, enhancing the insulation performance of the winding body 1. Meanwhile, the sealing assembly 4 seals the winding body 1, the polyimide film 2, and the thermally conductive adhesive. Component 3 is completely enclosed. The inert gas filled inside the sealed box 401 isolates the external environment, reduces the impact of electric field and mechanical stress on the winding body 1, and inhibits the oxidation of the insulation material. Then, the first pressure sensor 403 and the second pressure sensor 404 monitor the air pressure inside and outside the sealed box 401 in real time. When the air pressure is abnormal, the external controller controls the air pressure regulating valve 402 to connect with the external gas storage tank and adjust the air pressure inside the sealed box 401 to a suitable range to ensure the stability of the inert gas environment. Then, the silicone rubber buffer layer 5 and the silicon carbide coating 6 play the roles of buffering mechanical stress and enhancing wear resistance, respectively, further protecting the winding body 1 and improving the operating stability and service life of the electric field fan.

[0036] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An insulation enhancement device for an electric field wind turbine winding, comprising a winding body (1), characterized in that: A polyimide film (2) is fixedly installed on the outside of the winding body (1). A plurality of circumferentially arrayed heat-conducting components (3) are provided on the outside of the polyimide film (2). The heat-conducting components (3) include a heat-conducting ceramic sheet (301) fixedly embedded in the inside of the polyimide film (2). A sealing component (4) is provided on the outside of the winding body (1). The sealing component (4) includes a sealing box (401) fixedly connected to the outside of the winding body (1). A plurality of heat dissipation ducts (7) are fixedly embedded on the inside of the sealing box (401). The heat dissipation ducts (7) and the heat-conducting ceramic sheet (301) are in close contact. A silicone rubber buffer layer (5) is fixedly connected to the outside of the sealing box (401). A silicon carbide coating (6) is fixedly connected to the outside of the silicone rubber buffer layer (5).

2. The electric field fan winding insulation enhancement device according to claim 1, characterized in that: The outer side of the thermally conductive ceramic sheet (301) is in contact with the outer side of the winding body (1), and the thermally conductive ceramic sheet (301) and the winding body (1) are fixedly connected by thermally conductive adhesive.

3. The electric field fan winding insulation enhancement device according to claim 2, characterized in that: The outer side of the thermally conductive ceramic sheet (301) is fixedly connected with a plurality of equidistantly arranged thermally conductive fins (302), and the outer side of the thermally conductive fins (302) extends through the outer side of the heat dissipation duct (7) to the interior of the heat dissipation duct (7).

4. The electric field fan winding insulation enhancement device according to claim 1, characterized in that: The sealing assembly (4) completely covers the winding body (1), the polyimide film (2) and the heat-conducting assembly (3), and the inside of the sealing box (401) is filled with inert gas.

5. The electric field fan winding insulation enhancement device according to claim 1, characterized in that: A pressure regulating valve (402) is fixedly installed on the upper side of the sealed box (401), and the port of the pressure regulating valve (402) is connected to an external gas storage tank.

6. The electric field fan winding insulation enhancement device according to claim 5, characterized in that: A second pressure sensor (404) is fixedly installed on the inner side of the sealed box (401), and a first pressure sensor (403) is fixedly installed on the outer side of the sealed box (401).

7. The electric field fan winding insulation enhancement device according to claim 6, characterized in that: The pressure regulating valve (402) is electrically connected to the external controller, and both the second pressure sensor (404) and the first pressure sensor (403) are electrically connected to the external controller.

8. The electric field fan winding insulation enhancement device according to claim 1, characterized in that: The airflow direction of the heat dissipation duct (7) is set in the same direction as the main airflow direction of the external fan.

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