Electric field GE fan main shaft bearing over-temperature monitoring device

Abstract

This application relates to an over-temperature monitoring device for the main shaft bearing of a GE wind turbine, belonging to the field of wind power generation technology. The device includes a wind turbine body comprising a tower, nacelle, bearing body, main shaft, and rotor. The circulating heat dissipation micro-ducts of this application are partially inserted inside the front end of the nacelle and partially wrapped around the surface of the bearing body, secured by clamps and tightly fitted to the bearing surface. During operation, driven by a pump, circulating liquid in the storage tank flows through the pipes, absorbs heat from the bearing, enters the cooling device for cooling, and then flows back to the storage tank to form a cycle. Compared to external fan cooling, the pipes directly contact the core heat-generating area of ​​the bearing, ensuring timely heat transfer and significantly improving cooling efficiency, solving the problems of low air cooling efficiency and difficulty in applying cool air to the core area. Temperature detectors are installed inside the bearing body, with multiple detectors distributed in different locations. During operation, the temperature of various parts of the bearing is collected in real time and the data is transmitted to an external controller.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to an over-temperature monitoring device for the main shaft bearing of a GE wind turbine. Background Technology

[0002] During the operation of GE wind turbines in electric fields, the main shaft bearing, as a core component, directly affects the overall operational stability and service life of the turbine. Because the main shaft bearing bears a large load and operates at high speed continuously during turbine operation, it is highly susceptible to temperature rise due to frictional heat. If the temperature exceeds the safe range, it will accelerate bearing wear, cause lubrication failure, and even lead to serious malfunctions such as bearing seizure or breakage. This will not only cause the wind turbine to shut down but may also result in high maintenance costs and power generation losses.

[0003] Existing cooling devices for fan main shaft bearings have several shortcomings. Some devices use external fans for air cooling, which has low cooling efficiency and the cold air cannot directly reach the core heat-generating area of ​​the bearing. Furthermore, traditional monitoring and cooling systems lack coordination; temperature monitoring and cooling execution are often independent, making it difficult to accurately adjust the cooling intensity based on temperature changes, resulting in energy waste or untimely cooling. Therefore, an over-temperature monitoring and cooling device that can closely fit the bearing, efficiently transfer heat, and intelligently link with the monitoring system is needed to ensure the safe and stable operation of the GE fan main shaft bearings in electric fields. This paper presents an over-temperature monitoring device for the GE fan main shaft bearings in electric fields. Utility Model Content

[0004] The purpose of this application is to provide an over-temperature monitoring device for the main shaft bearing of an electric field GE fan, which features efficient heat dissipation and real-time linkage between monitoring and cooling.

[0005] This application provides a GE wind turbine main shaft bearing over-temperature monitoring device with the following technical solution: It includes a wind turbine body, comprising a tower, a nacelle cover, a bearing body, a main shaft body, and a rotor. The nacelle cover is installed at the upper end of the tower, and the bearing body passes through the front end of the nacelle cover. The main shaft body is rotatably connected inside the bearing body, and the rotor is installed at the front end of the main shaft body. It also includes a temperature detector and circulating heat dissipation micro-ducts. The temperature detector is installed inside the bearing body to monitor the real-time temperature of the bearing; the circulating heat dissipation micro-ducts are partially inserted inside the front end of the nacelle cover and partially wound around the surface of the bearing body. Furthermore, it is fixed to the bearing body surface by a fixing clamp and is not directly connected to the main shaft body; the outer side of the circulating heat dissipation micro-pipe is wrapped with heat insulation material; one end of the circulating heat dissipation micro-pipe is connected to a pump body through a pipe, and the input end of the pump body is connected to a liquid storage tank through a pipe. The pump body and the liquid storage tank are both fixedly connected to the front side of the engine compartment cover. The other end of the circulating heat dissipation micro-pipe is connected to a cooling device through a pipe. The cooling device is fixedly connected to the front side of the engine compartment cover, and the output end of the cooling device is connected to the liquid storage tank through a pipe, forming a circulation loop; the temperature detector, pump body, and cooling device are all electrically connected to an external controller;

[0006] By adopting the above technical solution, the circulating heat dissipation micro-pipes are partially inserted inside the front end of the nacelle cover and partially wrapped around the surface of the bearing body, secured with clamps and tightly fitted to the bearing surface. During operation, driven by the pump, the circulating liquid in the reservoir flows through the pipes, absorbs heat from the bearing, enters the cooling device for cooling, and then flows back to the reservoir to form a cycle. Compared to external fan cooling, the pipes directly contact the core heat-generating area of ​​the bearing, ensuring timely heat transfer and significantly improving cooling efficiency, solving the problems of low air cooling efficiency and difficulty in applying cool air to the core area. Temperature detectors are installed inside the bearing body, with multiple detectors distributed in different locations. During operation, the temperature of various parts of the bearing is collected in real time and the data is transmitted to an external controller. After the receiving module of the external controller acquires the data, the comparison module compares it with a preset threshold, and the control module adjusts the pump and cooling device according to the result. When the temperature does not exceed the threshold, the device is in standby mode; when it exceeds the threshold, the pump and cooling device are activated, achieving real-time linkage between monitoring and cooling, solving the problem of independent monitoring and cooling in traditional methods, and avoiding energy waste or untimely cooling.

[0007] Preferably, the circulating heat dissipation micro-channel is made of a metal or alloy material with good thermal conductivity, and the surface of the channel is in close contact with the outer surface of the bearing body.

[0008] By adopting the above technical solution, the circulating heat dissipation micro-pipes are made of high thermal conductivity metal or alloy materials and are closely attached to the outer surface of the bearing body. This can minimize the heat transfer path and enhance the heat exchange efficiency between the pipe and the bearing. Compared with pipes with poor thermal conductivity or loose attachment, they can absorb the bearing heat faster and improve the cooling effect.

[0009] Preferably, there are multiple temperature detectors, which are installed at different internal locations of the bearing body to monitor the temperature of various parts of the bearing.

[0010] By adopting the above technical solution, multiple temperature detectors are installed in different internal positions of the bearing body, which can comprehensively capture the temperature changes of various parts of the bearing, avoid the problem of missing local overheating due to incomplete monitoring by a single detector, provide more accurate temperature data for the external controller, and ensure that cooling control is more targeted.

[0011] Preferably, the liquid storage tank is provided with a circulating liquid, and the circulating liquid is a liquid with high thermal conductivity and chemical stability.

[0012] By adopting the above technical solution, the circulating liquid in the storage tank has high thermal conductivity and chemical stability. High thermal conductivity can enhance the ability of the circulating liquid to absorb and transfer heat, thereby improving heat dissipation efficiency. Chemical stability ensures that the circulating liquid is not easily deteriorated or corroded by pipes during long-term use, reducing device failures caused by changes in the performance of the circulating liquid and extending the service life of the system.

[0013] Preferably, the external controller electrically connected to the temperature detector, pump body, and refrigeration device includes a data receiving module, a comparison module, and a control module; the data receiving module receives temperature data transmitted by the temperature detector; the comparison module compares the received temperature data with a preset temperature threshold; and the control module controls the start-up, stop, and operation status of the pump body and refrigeration device according to the comparison result.

[0014] By adopting the above technical solution, the external controller includes data receiving, comparison and control modules. It can receive data from the temperature detector and compare it with a preset threshold. Then, it adjusts the operating status of the pump and the refrigeration device according to the result, realizing intelligent linkage between temperature monitoring and cooling execution. It can accurately adjust the cooling intensity according to temperature changes to avoid energy waste or untimely cooling.

[0015] Preferably, the fixing clamps on the surface of the bearing body are made of corrosion-resistant and high-strength metal material, and a flexible anti-slip pad layer is provided on the inner side.

[0016] By adopting the above technical solution, the fixing clamp is made of corrosion-resistant, high-strength metal material, and has a flexible anti-slip pad layer on the inside. It can firmly fix the circulating heat dissipation micro pipe, prevent the pipe from loosening and shifting due to fan vibration, and ensure the tight fit between the pipe and the bearing body. It can also avoid the clamp from causing wear on the pipe surface, while enhancing the clamp's own corrosion resistance and service life, and ensuring long-term stable fixing effect.

[0017] Preferably, the heat insulation material on the outside of the circulating heat dissipation micro-pipe is a high-temperature resistant, anti-aging flexible insulation cotton with good heat insulation performance.

[0018] By adopting the above technical solution, the heat insulation material on the outside of the circulating heat dissipation micro-pipe is a high-temperature resistant and anti-aging flexible insulation cotton, which can effectively reduce the heat exchange between the circulating fluid and the outside world during the flow process, avoid heat loss in the middle, and ensure that the heat carried by the circulating fluid can be processed by the refrigeration device to the maximum extent. At the same time, its high-temperature resistance and anti-aging properties make it less prone to damage in the complex operating environment of the fan, extend its service life, and maintain stable heat insulation effect.

[0019] Preferably, the liquid storage tank is made of high-strength, impact-resistant engineering plastic, and the inner wall is provided with an anti-corrosion coating.

[0020] By adopting the above technical solution, the liquid storage tank is made of high-strength, impact-resistant engineering plastic, and the inner wall has an anti-corrosion coating. Its high strength and impact resistance enable it to withstand the pressure of the circulating liquid and external impacts, making it less prone to damage. The anti-corrosion coating can resist the long-term erosion of the circulating liquid, prevent the liquid storage tank from leaking due to corrosion, ensure the sealing and stability of the circulation system, and reduce the frequency of maintenance.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This device for monitoring the over-temperature of the main shaft bearing of a GE fan utilizes a circulating heat dissipation micro-pipeline. Part of the pipe is inserted inside the front end of the nacelle cover, while another part is wrapped around the bearing body surface and secured with clamps, ensuring a tight fit. During operation, driven by a pump, circulating liquid from the reservoir flows through the pipes, absorbing heat from the bearing before entering the cooling system for cooling, and then returning to the reservoir to form a cycle. Compared to external fan cooling, the pipes directly contact the core heat-generating area of ​​the bearing, ensuring timely heat transfer and significantly improving cooling efficiency. This solves the problems of low efficiency and difficulty in effectively reaching the core area with air cooling. Temperature detectors are installed inside the bearing body, with multiple detectors distributed in different locations. During operation, the device collects the temperature of various parts of the bearing in real time and transmits the data to an external controller. After receiving the data, the external controller's receiving module compares it with a preset threshold, and the control module adjusts the pump and cooling system based on the result. When the temperature does not exceed the threshold, the device remains in standby mode; when it exceeds the threshold, the pump and cooling system are activated, achieving real-time linkage between monitoring and cooling. This solves the problem of independent monitoring and cooling in traditional systems, preventing energy waste or untimely cooling. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure as seen from the front of this application;

[0024] Figure 2 This is a partial frontal three-dimensional structural schematic diagram of this application;

[0025] Figure 3 This is a schematic diagram of the internal structure of the bearing body in this application;

[0026] Figure 4 This is a three-dimensional enlarged structural schematic diagram of the bearing body, liquid reservoir, pump body, and refrigeration device of this application;

[0027] Figure 5 This is a schematic diagram of the structure of the bearing body surface in this application.

[0028] In the picture:

[0029] 1. Fan body; 101. Tower; 102. Nacelle cover; 103. Bearing body; 104. Main shaft body; 105. Wind turbine; 2. Temperature detector; 3. Circulating heat dissipation micro-pipes; 4. Liquid storage tank; 5. Pump body; 6. Refrigeration unit. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: An over-temperature monitoring device for the main shaft bearing of a GE electric fan, referring to... Figure 1 , Figure 2 and Figure 3The system includes a wind turbine body 1, which comprises a tower 101, a nacelle cover 102, a bearing body 103, a main shaft body 104, and a wind turbine 105. The nacelle cover 102 is mounted on the upper end of the tower 101. The bearing body 103 passes through the front end of the nacelle cover 102. The main shaft body 104 is rotatably connected inside the bearing body 103. The wind turbine 105 is located at the front end of the main shaft body 104. The system also includes a temperature detector 2 and a circulating cooling micro-duct 3. The temperature detector 2 is installed inside the bearing body 103 to monitor the real-time temperature of the bearing. The circulating cooling micro-duct 3 is partially inserted inside the front end of the nacelle cover 102 and partially wrapped around the surface of the bearing body 103, and fixed to the surface of the bearing body 103 by clamps, without directly contacting the main shaft body 104. The circulating heat dissipation micro-pipe 3 is wrapped with heat insulation material on its outer side. One end of the circulating heat dissipation micro-pipe 3 is connected to a pump body 5 via a pipe. The input end of the pump body 5 is connected to a liquid storage tank 4 via a pipe. Both the pump body 5 and the liquid storage tank 4 are fixedly connected to the front side of the engine compartment cover 102. The other end of the circulating heat dissipation micro-pipe 3 is connected to a cooling device 6 via a pipe. The cooling device 6 is fixedly connected to the front side of the engine compartment cover 102. The output end of the cooling device 6 is connected to the liquid storage tank 4 via a pipe, forming a circulation loop. The temperature detector 2, the pump body 5, and the cooling device 6 are all electrically connected to an external controller. Part of the circulating heat dissipation micro-pipe 3 is inserted inside the front end of the engine compartment cover 102, and part is wrapped around the surface of the bearing body 103. It is fixed by a fixing clamp and fits tightly against the bearing surface. During operation, driven by the pump body 5, the circulating liquid in the liquid storage tank 4 flows through the pipe, absorbs the heat of the bearing, enters the cooling device 6 for cooling, and then flows back to the liquid storage tank 4 to form a circulation. Compared to external fan cooling, the duct directly contacts the core heat-generating area of ​​the bearing, ensuring timely heat transfer and significantly improving cooling efficiency. This solves the problems of low efficiency and difficulty in delivering cool air to the core area. Temperature detectors 2 are installed inside the bearing body 103, with multiple detectors distributed in different locations. During operation, the temperature of various parts of the bearing is collected in real time and transmitted to an external controller. After the receiving module of the external controller acquires the data, the comparison module compares it with a preset threshold. The control module adjusts the pump 5 and the cooling device 6 based on the result. When the temperature does not exceed the threshold, the device is in standby mode; when the temperature exceeds the threshold, the pump 5 and the cooling device 6 are activated, achieving real-time linkage between monitoring and cooling. This solves the problem of independent monitoring and cooling in traditional systems, avoiding energy waste or untimely cooling.

[0032] Reference Figure 1 , Figure 4 and Figure 5The circulating heat dissipation micro-pipe 3 is made of a metal or alloy material with good thermal conductivity, and the surface of the pipe is in close contact with the outer surface of the bearing body 103. There are multiple temperature detectors 2, which are installed in different internal positions of the bearing body 103 to monitor the temperature of various parts of the bearing. The circulating heat dissipation micro-pipe 3 is made of a high thermal conductivity metal or alloy material and is in close contact with the outer surface of the bearing body 103, which can shorten the heat transfer path to the maximum extent and enhance the heat exchange efficiency between the pipe and the bearing. Compared with pipes with poor thermal conductivity or loose contact, it can absorb the heat of the bearing faster and improve the cooling effect. Multiple temperature detectors 2 are installed in different internal positions of the bearing body 103, which can comprehensively capture the temperature changes of various parts of the bearing, avoid the problem of local overheating and missed detection due to incomplete monitoring by a single detector, provide more accurate temperature data for the external controller, and ensure that the cooling control is more targeted.

[0033] Reference Figure 1 , Figure 2 and Figure 4 The storage tank 4 contains a circulating liquid with high thermal conductivity and chemical stability. An external controller electrically connected to the temperature detector 2, pump 5, and refrigeration device 6 includes a data receiving module, a comparison module, and a control module. The data receiving module receives temperature data transmitted from the temperature detector 2. The comparison module compares the received temperature data with a preset temperature threshold. The control module controls the start, stop, and operation of the pump 5 and refrigeration device 6 based on the comparison result. The circulating liquid in the storage tank 4 has high thermal conductivity and chemical stability. High thermal conductivity enhances the circulating liquid's ability to absorb and transfer heat, improving heat dissipation efficiency. Chemical stability ensures that the circulating liquid is not easily deteriorated or corroded during long-term use, reducing device failures caused by changes in the circulating liquid's properties and extending the system's service life. The external controller includes data receiving, comparison, and control modules. It receives data from the temperature detector 2 and compares it with a preset threshold, then adjusts the operation of the pump 5 and refrigeration device 6 based on the result, achieving intelligent linkage between temperature monitoring and cooling execution. It can precisely adjust the cooling intensity according to temperature changes, avoiding energy waste or untimely cooling.

[0034] Reference Figure 1 , Figure 2 and Figure 5The fixing clamps on the surface of the bearing body 103 are made of corrosion-resistant and high-strength metal material, with a flexible anti-slip pad layer on the inside. The heat insulation material on the outside of the circulating heat dissipation micro-pipe 3 is high-temperature resistant and anti-aging flexible insulation cotton with good heat insulation performance. The liquid storage tank 4 is made of high-strength and impact-resistant engineering plastic, with an anti-corrosion coating on the inner wall. The fixing clamps are made of corrosion-resistant and high-strength metal material, with a flexible anti-slip pad layer on the inside. This not only firmly fixes the circulating heat dissipation micro-pipe 3, preventing the pipe from loosening or shifting due to fan vibration and ensuring a tight fit between the pipe and the bearing body 103, but also avoids wear on the pipe surface caused by the clamps, while enhancing the corrosion resistance and service life of the clamps themselves, ensuring long-term stable fixing effect. The heat insulation material on the outside of the circulating heat dissipation micro-pipe 3 is high-temperature resistant and anti-aging flexible insulation cotton, which can effectively reduce the heat exchange between the circulating fluid and the outside environment during the flow process, avoid heat loss midway, and ensure that the heat carried by the circulating fluid can be processed by the refrigeration device 6 to the maximum extent. At the same time, its high-temperature resistance and anti-aging properties make it less prone to damage in the complex operating environment of the fan, extend its service life, and maintain stable heat insulation effect. The liquid storage tank 4 is made of high-strength, impact-resistant engineering plastic, and the inner wall has an anti-corrosion coating. Its high strength and impact resistance enable it to withstand the pressure of the circulating fluid and external impacts, making it less prone to damage. The anti-corrosion coating can resist the long-term erosion of the circulating fluid, prevent the liquid storage tank 4 from leaking due to corrosion, ensure the sealing and stability of the circulation system, and reduce the frequency of maintenance.

[0035] In this embodiment, the circulating heat dissipation micro-pipe 3 is partially inserted inside the front end of the nacelle cover 102 and partially wrapped around the surface of the bearing body 103, secured by clamps and tightly fitted to the bearing surface. During operation, driven by the pump 5, the circulating liquid in the storage tank 4 flows through the pipe, absorbs heat from the bearing, enters the cooling device 6 for cooling, and then flows back to the storage tank 4 to form a cycle. Compared to external fan cooling, the pipe directly contacts the core heat-generating area of ​​the bearing, ensuring timely heat transfer and significantly improving cooling efficiency, solving the problems of low air cooling efficiency and difficulty in applying cool air to the core area. Temperature detectors 2 are installed inside the bearing body 103, with multiple detectors distributed in different locations. During operation, the temperature of various parts of the bearing is collected in real time and transmitted to an external controller. After the receiving module of the external controller acquires the data, the comparison module compares it with a preset threshold, and the control module adjusts the pump 5 and the cooling device 6 according to the result. When the temperature does not exceed the threshold, the device is in standby mode; when the temperature exceeds the threshold, the pump 5 and the cooling device 6 are activated, achieving real-time linkage between monitoring and cooling, solving the problem of independent monitoring and cooling in traditional methods, and avoiding energy waste or untimely cooling.

[0036] The implementation principle of this application embodiment is as follows: When the GE fan in the electric field is running, the main shaft body 104 in the fan body 1 rotates inside the bearing body 103, driving the impeller 105 to rotate synchronously. The bearing body 103 generates heat due to friction. The temperature detector 2 installed inside the bearing body 103 monitors the temperature of various parts of the bearing in real time. Multiple detectors collect temperature data from different locations and continuously transmit the data to the external controller. After receiving the data transmitted by the temperature detector 2, the external controller processes it through its internal data receiving module, comparison module, and control module: the data receiving module obtains the temperature information, the comparison module compares the temperature data with a preset threshold, and the control module generates a control command based on the comparison result. When the temperature does not exceed the preset threshold, the external controller does not start the pump body 5 and the cooling device 6, the circulating liquid in the circulating heat dissipation micro-pipe 3 does not flow, and the device is in a monitoring standby state. When the temperature exceeds the preset threshold, the external controller sends a start command to the pump body 5 and the cooling device 6: the pump body 5 starts working and pumps the circulating liquid in the storage tank 4 into the circulating heat dissipation micro-pipe 3 through the pipe. The circulating liquid flows through the nacelle cover 102. After the internal pipe section at the front end, the pipe section wrapped around the surface of the bearing body 103 enters. Under the fixing action of the fixing clamp, the pipe is tightly attached to the bearing body 103, and the circulating fluid absorbs the heat generated by the bearing. After absorbing heat, the circulating fluid continues to flow along the circulating heat dissipation micro-pipe 3 and enters the cooling device 6. After being cooled by the cooling device 6, it flows back to the storage tank 4 through the pipe, forming a complete circulating cooling circuit. At the same time, the heat insulation material wrapped on the outside of the circulating heat dissipation micro-pipe 3 reduces the heat exchange between the circulating fluid and the outside environment, ensuring heat dissipation efficiency. The external controller dynamically adjusts the operating power of the pump body 5 and the cooling intensity of the cooling device 6 through the control module based on the temperature data transmitted in real time by the temperature detector 2: the higher the temperature, the greater the power of the pump body 5 to accelerate the flow rate of the circulating fluid, and the stronger the cooling intensity of the cooling device 6 to improve the cooling effect; when the temperature decreases, the operating parameters are correspondingly reduced; when the temperature detector 2 detects that the temperature of the bearing body 103 drops below the preset threshold, the external controller issues a stop command, the pump body 5 and the cooling device 6 gradually stop working, the circulating fluid stops flowing, and the device returns to the monitoring standby state, waiting for the next temperature trigger.

[0037] 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 over-temperature monitoring device for the main shaft bearing of a GE electric wind turbine, comprising a wind turbine body (1), the wind turbine body (1) comprising a tower (101), a nacelle cover (102), a bearing body (103), a main shaft body (104), and a wind turbine (105), wherein the upper end of the tower (101) is provided with the nacelle cover (102), the front end of the nacelle cover (102) is provided with the bearing body (103), the bearing body (104) is rotatably connected inside the bearing body (103), and the front end of the main shaft body (104) is provided with the wind turbine (105), characterized in that: It also includes a temperature detector (2) and a circulating heat dissipation micro-pipe (3). The temperature detector (2) is installed inside the bearing body (103) to monitor the real-time temperature of the bearing. The circulating heat dissipation micro-pipe (3) is partially inserted inside the front end of the engine compartment cover (102) and partially wrapped around the surface of the bearing body (103), and is fixed to the surface of the bearing body (103) by a fixing clamp, and is not directly connected to the main shaft body (104). The outside of the circulating heat dissipation micro-pipe (3) is wrapped with heat insulation material. One end of the circulating heat dissipation micro-pipe (3) is connected to a pipe. A pump body (5) is connected to the nacelle (102). The pump body (5) is connected to a liquid storage tank (4) via a pipe at its input end. Both the pump body (5) and the liquid storage tank (4) are fixedly connected to the front side of the nacelle (102). The other end of the circulating heat dissipation micro pipe (3) is connected to a cooling device (6) via a pipe. The cooling device (6) is fixedly connected to the front side of the nacelle (102). The output end of the cooling device (6) is connected to the liquid storage tank (4) via a pipe to form a circulation loop. The temperature detector (2), the pump body (5), and the cooling device (6) are all electrically connected to an external controller.

2. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: The circulating heat dissipation micro-pipe (3) is made of a metal or alloy material with good thermal conductivity, and the surface of the pipe is in close contact with the outer surface of the bearing body (103).

3. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: Multiple temperature detectors (2) are installed in different internal positions of the bearing body (103) to monitor the temperature of various parts of the bearing.

4. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: The storage tank (4) is equipped with a circulating liquid, which is a liquid with high thermal conductivity and chemical stability.

5. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: The external controller electrically connected to the temperature detector (2), pump body (5) and refrigeration device (6) includes a data receiving module, a comparison module and a control module; the data receiving module receives temperature data transmitted by the temperature detector (2); the comparison module compares the received temperature data with a preset temperature threshold; the control module controls the start, stop and operation status of the pump body (5) and refrigeration device (6) according to the comparison result.

6. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: The fixing clamps on the surface of the bearing body (103) are made of corrosion-resistant and high-strength metal material, and a flexible anti-slip pad layer is provided on its inner side.

7. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: The heat insulation material on the outside of the circulating heat dissipation micro-pipe (3) is a high-temperature resistant, anti-aging flexible insulation cotton with good heat insulation performance.

8. The electric field GE fan main shaft bearing over-temperature monitoring device according to claim 1, characterized in that: The liquid storage tank (4) is made of high-strength, impact-resistant engineering plastic and has an anti-corrosion coating on its inner wall.

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