A self-cleaning cooling device for a direct-cooled wind power generator

Abstract

The application discloses a kind of direct cooling wind power generator self-cleaning type cooling device, including base, the side wall of the base is fixedly connected with installation box, the side wall of the side of installation box away from base is fixedly connected with protection box, the side wall of the side of protection box is equipped with connecting frame, the both sides of the side wall of protection box are fixedly connected with air inlet box, the side wall of the side of air inlet box away from protection box is fixedly connected with cooling box, cooling pipe is equipped in cooling box.The application solves the phenomenon that air dust enters the inside of wind power generator in air-water cooling, by setting cooling box, cleaning groove, filter screen, air inlet box and other structures, the air entering the protection box is blocked by filter screen, cooling pipe and air inlet box, to avoid dust from entering the protection box to affect the use of generator, while cooperating with the cooling cycle of cooling pipe in cooling box and air inlet and suction, the cooling efficiency of generator set can be improved.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a self-cleaning cooling device for a direct-cooled wind turbine. Background Technology

[0002] A wind turbine, also known simply as a wind turbine, is an essential component of a wind power plant. It mainly consists of three parts: a tower, blades, and a generator. In addition, it features automatic wind steering, blade helix control, and monitoring and protection functions. The operating wind speed must be greater than 2 to 4 meters per second (depending on the generator), but excessively strong winds (approximately 25 meters per second) are also undesirable. Full-load power generation is achieved when the wind speed reaches 10 to 16 meters per second. Since each wind turbine can operate independently, each can be considered a separate wind power plant, representing a type of distributed power generation system.

[0003] Industry experts know that the cooling structures of wind turbines mainly include air-to-air coolers, air-to-water coolers, and water jacket cooling. These methods cool the generator during operation to prevent overheating, which could affect its performance and power generation efficiency. Existing air-cooling methods require heat exchange and transfer between air and water to achieve cooling. However, the introduction of air introduces dust and impurities into the generator, affecting its operation and reducing air cooling efficiency, thus impacting the wind turbine's power generation process. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-cleaning cooling device for direct-cooled wind turbines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-cleaning cooling device for a direct-cooled wind turbine includes a base, an installation box fixedly connected to one side wall of the base, a protective box fixedly connected to the side wall of the installation box away from the base, a connecting frame on one side wall of the protective box, air inlets fixedly connected to both side walls of the protective box, a cooling box fixedly connected to the side wall of the air inlets away from the protective box, a cooling pipe inside the cooling box, a cleaning groove on the side wall of the cooling box away from the air inlets, a cleaning frame slidably connected in the cleaning groove, a traction mechanism for moving the cleaning frame on one side wall of the air inlets, a delivery pipe fixedly connected to the end of the cooling pipe, a pump body and a compressor fixedly connected to the side wall of the base near the installation box, the pump body and the compressor being connected through a pipe, and a drive mechanism for driving the operation of the pump body and the compressor on the side wall of the installation box near the pump body.

[0007] The cleaning rack has a cleaning mechanism for auxiliary cleaning on the side wall near the cooling box. The mounting box has a control tube fixedly connected to the side wall near the pump body. The control tube contains evaporating liquid. The side wall away from the base of the control tube has a pressure relief mechanism for depressurizing the control tube. A drive piston is slidably connected inside the control tube. Both the drive piston and the inner wall of the control tube have electrical contacts. The protective box has two symmetrically arranged exhaust fans on the side wall away from the connecting frame. The exhaust fans and the air inlet box are both connected to the protective box.

[0008] Preferably, the traction mechanism includes an air intake box fixedly connected to the side wall of the air intake box near the exhaust fan. A rotating shaft is rotatably connected inside the air intake box. The side wall of the rotating shaft is provided with multiple circumferentially arranged fan blades. A torsion spring is provided between the rotating shaft and the air intake box. The rotating shaft is eccentrically installed inside the air intake box. Two symmetrically arranged collecting wheels are fixedly connected to the side wall of the rotating shaft. A traction rope is wound around the side wall of the collecting wheels. The traction rope passes through the air intake box and is fixedly connected to a cleaning frame. Two symmetrically arranged support frames are fixedly connected to the side wall of the cooling box near the air intake box. Support wheels are rotatably connected inside the support frames. The traction rope is wound around the support wheels.

[0009] Preferably, the side wall of the air intake box away from the air intake box is provided with an air intake groove, and both the inner side walls of the air intake groove and the cleaning groove are provided with filters.

[0010] Preferably, the drive mechanism includes a motor fixedly connected to the side wall of the mounting box near the pump body, the output shaft of the motor being fixedly connected to the rotating shaft of the compressor, and pulleys being fixedly connected to the side walls of both the pump body and the rotating shaft of the compressor, with a belt sleeved between the two pulleys.

[0011] Preferably, the cleaning mechanism includes a collection trough, which is disposed on the side wall of the cleaning rack near the filter screen. A contact plate is fixedly connected to the side wall of the cleaning rack located in the collection trough. A cleaning brush is provided on the side wall of the contact plate near the filter screen. A return spring is fixedly connected to the side wall of the cleaning rack away from the air intake box. The return spring is fixedly connected to the side wall of the cooling box.

[0012] Preferably, the cleaning rack has a collection pipe on the side wall away from the collection tank, the collection pipe connecting the two collection tanks, and the side wall away from the cleaning rack connecting the collection pipe to the compressor.

[0013] Preferably, the pressure relief mechanism includes a balance tube fixedly connected to the side wall of the control tube away from the base, and a balance piston is slidably connected inside the balance tube.

[0014] Preferably, both of the terminals are electrically connected to a connecting wire, and one of the connecting wires is electrically connected to a relay. The relay is electrically connected to a motor, and the relay is a timing relay with the model number 7PR4140.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows:

[0016] 1. Compared with the prior art, the present invention solves the problem of dust entering the wind turbine in air-water cooling. By setting up structures such as cooling box, cleaning tank, filter screen, and air inlet box, the air entering the protective box is blocked by the filter screen, cooling pipe and air inlet box, avoiding dust from entering the protective box and affecting the use of the generator. At the same time, the cooling circulation and air intake of the air inlet box and the cooling pipe in the cooling box can improve the cooling efficiency of the generator set.

[0017] 2. Compared with existing technologies, this invention also solves the problem of generator set cooling control. By setting up a balance pipe, control pipe, contact plates, and evaporator, the evaporator evaporates upon heating, enabling the drive piston to move and contact the contact plates on both sides, thus achieving connection control of the wiring. This allows for motor operation control even when the generator is at a high temperature.

[0018] 3. The present invention is equipped with a cooling box, a cleaning tank, a filter screen, and a cleaning rack. The movement of the cleaning rack in the cleaning tank causes the cleaning rack to contact and move with the filter screen in the cleaning tank. This causes the contact plate and cleaning brush on the filter screen to clean the dust and impurities filtered by the filter screen. Combined with the negative pressure adsorption of the collection pipe, the dust and impurities can be collected through the collection tank, avoiding the clogging of the filter screen by dust and impurities, which would affect the heat dissipation efficiency of the generator.

[0019] 4. The present invention is equipped with a rotating shaft, fan blades, a collecting wheel, and a traction rope. By drawing air in through the negative pressure of the air inlet, the fan blades and rotating shaft can be driven to rotate. In conjunction with the traction of the traction rope by the collecting wheel, the cleaning frame can be moved and pulled in the cleaning tank to achieve automatic cleaning of the filter screen. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main view structure proposed in this invention;

[0021] Figure 2 This is a schematic diagram of the side structure proposed in this invention;

[0022] Figure 3 This is a schematic diagram of the cleaning rack structure proposed in this invention;

[0023] Figure 4 This is a schematic diagram of the rotating shaft structure proposed in this invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the control tube proposed in this invention.

[0025] In the diagram: 1. Base, 2. Mounting box, 3. Protective box, 4. Connecting frame, 5. Air inlet box, 6. Cooling box, 7. Cleaning tank, 8. Exhaust fan, 9. Delivery pipe, 10. Pump body, 11. Compressor, 12. Pulley, 13. Motor, 14. Relay, 15. Control pipe, 16. Balance pipe, 17. Cleaning rack, 18. Traction rope, 19. Support wheel, 20. Air inlet box, 21. Rotating shaft, 22. Fan blade, 23. Collection wheel, 24. Contact plate, 25. Collection tank, 26. Collection pipe, 27. Drive piston, 28. Connecting piece, 29. Connecting wire, 30. Balance piston. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Reference Figure 1-5 A self-cleaning cooling device for a direct-cooled wind turbine includes a base 1, an installation box 2 fixedly connected to one side wall of the base 1, a protective box 3 fixedly connected to the side wall of the installation box 2 away from the base 1, a connecting frame 4 provided on one side wall of the protective box 3, air inlet boxes 5 fixedly connected to both side walls of the protective box 3, a cooling box 6 fixedly connected to the side wall of the air inlet box 5 away from the protective box 3, a cooling pipe provided inside the cooling box 6, a cleaning groove 7 opened on the side wall of the cooling box 6 away from the air inlet box 5, and a cleaning frame 17 slidably connected inside the cleaning groove 7;

[0029] A traction mechanism for moving and pulling the cleaning rack 17 is provided on one side wall of the air inlet box 5. The traction mechanism includes an air inlet box 20 fixedly connected to the side wall of the air inlet box 5 near the exhaust fan 8. An air inlet groove is provided on the side wall of the air inlet box 20 away from the air inlet box 5. Filter screens are provided on the inner side walls of the air inlet groove and the cleaning groove 7. A rotating shaft 21 is rotatably connected inside the air inlet box 20. Multiple circumferentially arranged fan blades 22 are provided on the side wall of the rotating shaft 21. A torsion spring is provided between the rotating shaft 21 and the air inlet box 20. The rotating shaft 21 is eccentrically installed inside the air inlet box 20. Two symmetrically arranged collecting wheels 23 are fixedly connected to the side wall of the rotating shaft 21. A traction rope 18 is wound around the side wall of the collecting wheels 23. Both electrical contacts 28 are electrically connected to connecting wires 29. A relay 14 is electrically connected to one side of the connecting wire 29. The relay 14 is electrically connected to the motor 13. The relay 14 is a timer relay with the model number 7PR4140.

[0030] The traction rope 18 passes through the air intake box 20 and is fixedly connected to the cleaning rack 17. The side wall of the cleaning rack 17 away from the collection tank 25 is provided with a collection pipe 26, which connects the two collection tanks 25. The side wall of the collection pipe 26 away from the cleaning rack 17 is connected to the compressor 11. The cooling box 6 is fixedly connected to two symmetrically arranged support frames on the side wall near the air intake box 20. The support frame is rotatably connected to a support wheel 19, and the traction rope 18 is wound around the support wheel 19.

[0031] The end of the cooling pipe is fixedly connected to the delivery pipe 9. The pump body 10 and the compressor 11 are fixedly connected to the side wall of the base 1 near the mounting box 2. The pump body 10 and the compressor 11 are connected through a pipe. The side wall of the mounting box 2 near the pump body 10 is provided with a drive mechanism for driving the pump body 10 and the compressor 11. The drive mechanism includes a motor 13 fixedly connected to the side wall of the mounting box 2 near the pump body 10. The output shaft of the motor 13 is fixedly connected to the rotating shaft of the compressor 11. The side walls of the rotating shafts of the pump body 10 and the compressor 11 are both fixedly connected to pulleys 12. A belt is sleeved between the two pulleys 12.

[0032] The cleaning rack 17 has a cleaning mechanism for auxiliary cleaning on the side wall near the cooling box 6. The cleaning mechanism includes a collection tank 25, which is set on the side wall of the cleaning rack 17 near the filter screen. A contact plate 24 is fixedly connected to the side wall of the cleaning rack 17 located in the collection tank 25. A cleaning brush is provided on the side wall of the contact plate 24 near the filter screen. A return spring is fixedly connected to the side wall of the cleaning rack 17 away from the air intake box 20. The return spring is fixedly connected to the side wall of the cooling box 6.

[0033] A control pipe 15 is fixedly connected to the side wall of the mounting box 2 near the pump body 10. The control pipe 15 contains evaporating liquid. A pressure relief mechanism for relieving pressure on the side wall of the control pipe 15 away from the base 1 is provided. The pressure relief mechanism includes a balance pipe 16 fixedly connected to the side wall of the control pipe 15 away from the base 1. A balance piston 30 is slidably connected inside the balance pipe 16. A drive piston 27 is slidably connected inside the control pipe 15. Both the drive piston 27 and the inner wall of the control pipe 15 are provided with electrical contacts 28. Two symmetrically arranged exhaust fans 8 are provided on the side wall of the protective box 3 away from the connecting frame 4. Both the exhaust fans 8 and the air inlet box 5 are connected to the protective box 3.

[0034] The functional principle of this invention can be explained through the following operational methods: such as Figure 1-5 As shown, during operation, the temperature inside the protective chamber 3 is first sensed by the evaporator in the control tube 15. When the temperature inside the protective chamber 3 reaches the evaporation temperature threshold of the evaporator, the evaporator absorbs heat and evaporates, performing initial air cooling. At this time, the evaporator evaporates between the drive piston 27 and the control tube 15, increasing the pressure between the drive piston 27 and the control tube 15. As the temperature continues to rise, the gas pressure formed by the evaporation of the evaporator pushes the drive piston 27 to move within the control tube 15. During this process, the balance tube 16 and its internal balance piston 30 can balance the air pressure inside the control tube 15, preventing the drive piston 27 from being affected by the air pressure inside the control tube 15 due to the control tube 15 being sealed, until the contact plate 28 on it and the inside of the control tube 15... When the contact of the contact piece 28 is energized, the connecting wire 29 is connected, which energizes the relay 14. Subsequently, the relay 14 controls the motor 13 to start. At this time, the output shaft of the motor 13 drives the compressor 11 to cool the coolant in the delivery pipe 9 and deliver it to the cooling pipe in the cooling box 6 through the pump body 10. During this process, the exhaust fan 8 on the side wall of the protective box 3 is turned on to draw air out of the protective box 3. At this time, under the action of negative pressure, the air enters the air inlet box 5 through the cooling box 6 and the air inlet box 20 respectively. The air entering through the cooling box 6 comes into contact with the cooling pipe, and the contact between the air and the cooling pipe achieves the effect of heat transfer, that is, to cool down the air entering the protective box 3 and coming into contact with the generator set, thereby improving the cooling efficiency of the generator set.

[0035] During this process, the air entering the air intake box 5 through the air intake box 20 passes through the rotating shaft 21. Because the rotating shaft 21 is eccentrically set, the air entering the air intake box 20 under negative pressure comes into contact with the fan blades 22, causing the rotating shaft 21 to rotate. The collecting wheel 23 on the side wall of the rotating shaft 21 collects the traction rope 18, which drives the cleaning frame 17 to slide in the cleaning tank 7. At this time, the cleaning brush on the side wall of the contact plate 24 contacts the filter screen to achieve contact cleaning of dust and impurities on the side wall of the filter screen. At this time, the collecting pipe 26 is connected to the compressor 11. The negative pressure generated by the compressor 11 in the collecting pipe 26, in conjunction with the collecting tank 25, can perform negative pressure adsorption cleaning of the dust and impurities swept by the cleaning brush. With the generator The continuous cooling process of the generator set and the temperature inside the protective box 3 decreases, causing the evaporator to condense and liquefy. At this time, the drive piston 27 moves down in the control tube 15, the two terminals 28 disengage, the motor 13 is de-energized, and the cooling process of the generator set stops. Simultaneously, the exhaust fan 8 stops running, meaning the protective box 3 stops exhausting. Then, the rotating shaft 21 stops rotating. Under the action of the torsion spring, the rotating shaft 21 reverses, and under the traction of the return spring, the cleaning rack 17 moves and resets in the cleaning tank 7. When the temperature of the generator set rises again due to operation, the above process is repeated, thus achieving automatic cooling of the generator set and automatic collection and cleaning of dust on the filter screen.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-cleaning cooling device for a direct-cooled wind turbine generator, comprising a base (1), characterized in that, A mounting box (2) is fixedly connected to one side wall of the base (1). A protective box (3) is fixedly connected to the side wall of the mounting box (2) away from the base (1). A connecting frame (4) is provided on one side wall of the protective box (3). An air inlet box (5) is fixedly connected to both side walls of the protective box (3). A cooling box (6) is fixedly connected to the side wall of the air inlet box (5) away from the protective box (3). A cooling pipe is provided inside the cooling box (6). A cleaning groove (7) is opened on the side wall of the cooling box (6) away from the air inlet box (5). A cleaning rack (17) is slidably connected in the groove (7). A traction mechanism for moving and pulling the cleaning rack (17) is provided on one side wall of the air inlet box (5). A conveying pipe (9) is fixedly connected to the end of the cooling pipe. A pump body (10) and a compressor (11) are fixedly connected on one side wall of the base (1) near the mounting box (2). The pump body (10) and the compressor (11) are connected through a pipe. A drive mechanism for driving the operation of the pump body (10) and the compressor (11) is provided on one side wall of the mounting box (2) near the pump body (10). The cleaning rack (17) has a cleaning mechanism for auxiliary cleaning on the side wall near the cooling box (6). The mounting box (2) has a control tube (15) fixedly connected to the side wall near the pump body (10). The control tube (15) contains evaporating liquid. The control tube (15) has a pressure relief mechanism for depressurizing the control tube (15) on the side wall away from the base (1). The control tube (15) has a drive piston (27) slidably connected inside. Both the drive piston (27) and the inner wall of the control tube (15) are provided with electrical contacts (28). The protective box (3) has two symmetrically arranged exhaust fans (8) on the side wall away from the connecting frame (4). The exhaust fans (8) and the air inlet box (5) are both connected to the protective box (3). The traction mechanism includes an air intake box (20) fixedly connected to the side wall of the air intake box (5) near the exhaust fan (8). A rotating shaft (21) is rotatably connected inside the air intake box (20). The side wall of the rotating shaft (21) is provided with multiple circumferentially arranged fan blades (22). A torsion spring is provided between the rotating shaft (21) and the air intake box (20). The rotating shaft (21) is eccentrically installed inside the air intake box (20). Two symmetrically arranged collecting wheels (23) are fixedly connected to the side wall of the rotating shaft (21). A traction rope (18) is wound around the side wall of the collecting wheel (23). The traction rope (18) passes through the air intake box (20) and is fixedly connected to a cleaning rack (17). Two symmetrically arranged support frames are fixedly connected to the side wall of the cooling box (6) near the air intake box (20). A support wheel (19) is rotatably connected inside the support frame. The traction rope (18) is wound around the support wheel (19). The cleaning mechanism includes a collection trough (25), which is located on the side wall of the cleaning rack (17) near the filter screen. The cleaning rack (17) is fixedly connected to a contact plate (24) on one side wall of the collection trough (25). The contact plate (24) is provided with a cleaning brush on the side wall near the filter screen. A return spring is fixedly connected to the side wall of the cleaning rack (17) away from the air intake box (20). The return spring is fixedly connected to the side wall of the cooling box (6).

2. The self-cleaning cooling device for a direct-cooled wind turbine generator according to claim 1, characterized in that, The air intake box (20) has an air intake groove on the side wall away from the air intake box (5), and both the air intake groove and the inner side wall of the cleaning groove (7) are provided with filters.

3. The self-cleaning cooling device for a direct-cooled wind turbine generator according to claim 2, characterized in that, The drive mechanism includes a motor (13) fixedly connected to the side wall of the mounting box (2) near the pump body (10). The output shaft of the motor (13) is fixedly connected to the rotating shaft of the compressor (11). Both the pump body (10) and the rotating shaft side wall of the compressor (11) are fixedly connected to pulleys (12), and a belt is sleeved between the two pulleys (12).

4. The self-cleaning cooling device for a direct-cooled wind turbine generator according to claim 3, characterized in that, The cleaning rack (17) has a collection pipe (26) on the side wall away from the collection tank (25). The collection pipe (26) connects the two collection tanks (25). The side wall away from the cleaning rack (17) is connected to the compressor (11).

5. A self-cleaning cooling device for a direct-cooled wind turbine generator according to claim 4, characterized in that, The pressure relief mechanism includes a balance tube (16) fixedly connected to the side wall of the control tube (15) away from the base (1), and a balance piston (30) is slidably connected inside the balance tube (16).

6. The self-cleaning cooling device for a direct-cooled wind turbine generator according to claim 5, characterized in that, Both of the two contact plates (28) are electrically connected to a connecting line (29). One of the connecting lines (29) is electrically connected to a relay (14). The relay (14) is electrically connected to a motor (13). The relay (14) is a time relay with the model number 7PR4140.

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