Heat dissipation device for low-voltage alternating-current wind power generation variable-pitch driver

Abstract

The utility model discloses a radiating device for a low-voltage alternating-current wind power generation variable-pitch driver, which belongs to the technical field of wind power generation and comprises a heat insulation component, the heat insulation component comprises a heat insulation box, and a first heat insulation plate and a second heat insulation plate are arranged on two sides of the heat insulation box; the variable pitch driver further comprises a heat dissipation assembly, the heat dissipation assembly comprises a heat dissipation fan and an air inlet hose, the heat dissipation fan is installed on one side of the variable pitch driver body, and an exhaust pipe is fixedly installed on the outer side of the heat dissipation fan. The heat insulation box is arranged, the structure is simple, convenience and practicability are achieved, the variable pitch driver can be protected, introduction of heat generated by other equipment in a cabin is reduced, heat transfer can be effectively blocked, and the heat dissipation performance of the variable pitch driver body is improved in cooperation with the heat dissipation assembly for use; the heat insulation box can be controlled to be opened or closed according to the environment temperature, and therefore energy consumption is reduced while the heat dissipation performance is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically a heat dissipation device for a low-voltage AC wind power generation pitch driver. Background Technology

[0002] Low-voltage AC wind power generation is a method of generating electricity by converting wind resources into electrical energy, mainly used in small and medium-sized wind power systems. It employs a low-voltage AC generator to convert the mechanical energy generated by the wind turbine under wind power into low-voltage AC electricity. This generation method has advantages such as relatively simple structure, low cost, and convenient maintenance, making it suitable for scenarios with relatively low power demand, such as independent power supply in remote areas, and self-consumption power generation for small businesses or households. The pitch drive is one of the key components in a wind power system. It is mainly used to control the blade angle of the wind turbine, ensuring that the wind turbine maintains optimal wind energy capture efficiency under different wind speeds, thereby improving power generation efficiency and power quality. This drive typically employs advanced power electronics technology and control algorithms, featuring high precision, high reliability, and fast response, and adapting to a wide range of voltage fluctuations and temperature changes.

[0003] A search revealed that Chinese Patent Publication No. CN220955908U discloses a wind turbine pitch actuator, comprising a base plate. A positioning mechanism is provided on the upper surface of the base plate, and an actuator body is disposed within the positioning mechanism. A baffle is fixedly connected to one end of the upper surface of the base plate. The positioning mechanism includes a bidirectional screw shaft with first mounting blocks threaded to both ends. Positioning clamps are fixedly connected to the upper surfaces of the two sets of first mounting blocks, and a stabilizing plate is disposed directly above the positioning clamps. Through the cooperation between the positioning mechanism, the base plate, and the baffle, the actuator is limited by the baffle, and a tool is used to rotate the bidirectional screw shaft, thereby causing the two sets of first mounting blocks to move relative to each other. This causes the two sets of positioning clamps to move closer together and tighten the actuator body, facilitating the installation of actuator bodies of different specifications, improving the stability of the actuator body installation, and saving time and effort during assembly and disassembly.

[0004] However, this device also has the following drawbacks:

[0005] During the power generation process, the generator, inverter and transformer and other equipment inside the nacelle generate a lot of heat. This heat will affect the pitch drive through heat conduction or heat radiation, causing the pitch drive temperature to rise and making it difficult to dissipate heat. This device does not solve this problem. Utility Model Content

[0006] The purpose of this utility model is to provide a heat dissipation device for a low-voltage AC wind turbine pitch drive. By setting up a heat insulation box, the pitch drive can be protected, reducing the heat transfer from other equipment inside the nacelle. It can effectively block heat transfer and, when used with heat dissipation components, improve the heat dissipation performance of the pitch drive body, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A heat dissipation device for a low-voltage AC wind turbine pitch driver includes a heat insulation component, wherein the heat insulation component includes a heat insulation box, and a first heat insulation plate and a second heat insulation plate are provided on both sides of the heat insulation box.

[0009] It also includes a heat dissipation assembly, which includes a cooling fan and an air intake hose. The cooling fan is installed on one side of the pitch drive body, and an exhaust pipe is fixedly installed on the outside of the cooling fan. The exhaust pipe is slidably engaged with a through hole on the surface of the first heat insulation plate. The pitch drive body is fixedly installed at the bottom of the heat insulation box, and the bottom of the air intake hose is fixedly installed on the second heat insulation plate. The top of the air intake hose leads to the outside of the nacelle.

[0010] It also includes an adjustment assembly, which includes two sets of movable seats. The two sets of movable seats are respectively installed in two sets of threaded grooves with opposite directions on the surface of the bidirectional lead screw. The two sets of movable seats are fixedly connected to the top middle of the first heat insulation plate and the second heat insulation plate respectively through the first connecting frame.

[0011] Preferably, the two ends of the bidirectional lead screw are rotatably mounted on the inner side of the first mounting plate, and the first mounting plate is fixedly mounted on the top inner wall of the heat insulation box.

[0012] Preferably, one end of the bidirectional lead screw is connected to the output end of the motor, and the motor is fixedly installed on the outside of the first mounting plate.

[0013] Preferably, the top and bottom sides of the first and second heat insulation plates are fixedly connected to one end of the second connecting frame, and the other end of the second connecting frame is fixedly connected to the slide.

[0014] Preferably, the slide block is slidably mounted on the surface of the slide rod, and both ends of the slide rod are fixedly mounted on the second mounting plate, which is fixedly connected to the top or bottom of the heat insulation box.

[0015] Preferably, an installation groove is fixedly installed in the middle of the other two sides of the heat insulation box, and a connecting plate is sealed and snapped into the installation groove.

[0016] Preferably, the connecting plate includes an upper clamping plate and a lower clamping plate. The bottom two sides of the upper clamping plate are fixedly installed with clamping posts, and the top two sides of the lower clamping plate are provided with clamping grooves, and the clamping posts are clamped into the clamping grooves.

[0017] Preferably, a controller body is fixedly installed on the top of the heat insulation box, a first temperature sensor is installed on one side of the controller body, and a second temperature sensor is installed on the inner wall of the heat insulation box. The first temperature sensor and the second temperature sensor are electrically connected to the controller.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model features a heat shield, which is simple in structure, convenient and practical. It can protect the pitch drive, reduce the heat transfer from other equipment inside the nacelle, and effectively block heat transfer. When used with heat dissipation components, it improves the heat dissipation performance of the pitch drive itself. Furthermore, by setting an adjustment component, the heat shield can be opened or closed according to the ambient temperature, thereby reducing energy consumption while ensuring heat dissipation performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 A schematic diagram of the structure where the insulation box can be opened on both sides;

[0022] Figure 3 A schematic diagram of the adjustment component structure;

[0023] Figure 4 This is a schematic diagram of the explosion separation structure of the connecting plate.

[0024] In the diagram: 1. Insulation box; 2. First insulation plate; 3. Second insulation plate; 4. Cooling fan; 5. Pitch driver body; 6. Air inlet hose; 7. Moving base; 8. Bidirectional lead screw; 9. First connecting frame; 10. First mounting plate; 11. Motor; 12. Second connecting frame; 13. Slide; 14. Slide rod; 15. Second mounting plate; 16. Mounting slot; 17. Connecting plate; 1701. Upper clamping plate; 1702. Lower clamping plate; 1703. Clamping post; 1704. Clamping slot; 18. Controller body; 19. First temperature sensor; 20. Second temperature sensor; 21. Exhaust duct; 22. Through hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 This utility model provides a technical solution:

[0027] A heat dissipation device for a low-voltage AC wind turbine pitch drive includes a heat insulation component. The heat insulation component includes a heat insulation box 1, which is made of heat insulation material. A first heat insulation plate 2 and a second heat insulation plate 3 are provided on both sides of the heat insulation box 1. An installation groove 16 is fixedly installed in the middle of the other two sides of the heat insulation box 1. A connecting plate 17 is sealed and snapped into the installation groove 16. The connecting plate 17 includes an upper clamping plate 1701 and a lower clamping plate 1702. Snap-fitting posts 1703 are fixedly installed on both sides of the bottom of the upper clamping plate 1701. Snap-fitting grooves 1704 are opened on both sides of the top of the lower clamping plate 1702. The snap-fitting posts 1703 are snapped into the snap-fitting grooves 1704.

[0028] By setting up the heat insulation box 1, the first heat insulation plate 2, and the second heat insulation plate 3, the heat from the external environment can be effectively blocked from being transferred to the pitch drive body 5 through conduction and radiation. In high-temperature environments, the temperature rise rate of the pitch drive body 5 can be significantly slowed down, avoiding overheating of the pitch drive body 5 due to excessively high ambient temperatures, and ensuring stable operation within a suitable temperature range. Furthermore, by setting up the upper clamping plate 1701 and the lower clamping plate 1702, they can be clamped on the upper and lower sides of the wires used to connect with the pitch drive body 5, and connected to the heat insulation box 1 through the mounting groove 16, improving the sealing performance and further reducing the impact of ambient temperature on the pitch drive body 5.

[0029] It also includes a heat dissipation assembly, which includes a cooling fan 4 and an air intake hose 6. The cooling fan 4 is installed on one side of the pitch drive body 5. An exhaust pipe 21 is fixedly installed on the outside of the cooling fan 4. The exhaust pipe 21 is slidably engaged with a through hole 22 opened on the surface of the first heat insulation plate 2. The pitch drive body 5 is fixedly installed on the bottom of the heat insulation box 1. The bottom of the air intake hose 6 is fixedly installed on the second heat insulation plate 3. The top of the air intake hose 6 leads to the outside of the cabin.

[0030] By installing a cooling fan 4, heat inside the pitch drive body 5 can be quickly extracted, thereby accelerating the heat dissipation of the pitch drive body 5. Air from outside the nacelle is introduced into the pitch drive body 5 through the air intake hose 6, thereby accelerating airflow, improving heat dissipation performance, and reducing the impact of heat generated by other equipment inside the nacelle on the pitch drive body 5.

[0031] It also includes an adjustment assembly, which includes two sets of movable seats 7. The two sets of movable seats 7 are respectively installed in two sets of threaded grooves with opposite directions on the surface of the bidirectional lead screw 8. The two sets of movable seats 7 are fixedly connected to the top middle of the first heat insulation plate 2 and the second heat insulation plate 3 respectively through the first connecting frame 9. The two ends of the bidirectional lead screw 8 are rotatably installed on the inner side of the first mounting plate 10. The first mounting plate 10 is fixedly installed on the top inner wall of the heat insulation box 1. One end of the bidirectional lead screw 8 is drivenly connected to the output end of the motor 11. The motor 11 is fixedly installed on the outer side of the first mounting plate 10. The motor 11 is electrically connected to the controller body 18. The top two sides and the bottom two sides of the first heat insulation plate 2 and the second heat insulation plate 3 are fixedly connected to one end of the second connecting frame 12. The other end of the second connecting frame 12 is fixedly connected to the slide seat 13. The slide seat 13 is slidably installed on the surface of the slide rod 14. The two ends of the slide rod 14 are fixedly installed on the second mounting plate 15. The second mounting plate 15 is fixedly connected to the top or bottom of the heat insulation box 1.

[0032] By setting up a motor 11, the output end of the motor 11 can drive the bidirectional lead screw 8 to rotate, thereby causing the two sets of moving seats 7 to move. The moving seats 7 push the first heat insulation plate 2 and the second heat insulation plate 3 to move to both sides through the first connecting frame 9, so that the heat insulation box 1 can be opened when the temperature inside the nacelle is low, allowing the pitch drive body 5 to exchange heat with the air inside the nacelle, thus improving the heat dissipation performance. When the temperature inside the nacelle is too high, the first heat insulation plate 2 and the second heat insulation plate 3 can be controlled to move to the middle, closing the heat insulation box 1, and the air outside the nacelle can be introduced into the heat insulation box 1 through the air intake hose 6, thereby reducing the impact of the temperature inside the nacelle on the pitch drive body 5.

[0033] A controller body 18 is fixedly installed on the top of the heat insulation box 1. A first temperature sensor 19 is installed on one side of the controller body 18. A second temperature sensor 20 is installed on the inner wall of the heat insulation box 1. The first temperature sensor 19 and the second temperature sensor 20 are electrically connected to the controller.

[0034] By setting a first temperature sensor 19 and a second temperature sensor 20, the temperature of the outside and inside of the heat insulation box 1 can be monitored, and the heat insulation box 1 can be opened or closed by controlling the rotation of the motor 11 through the controller body 18, thereby reducing energy consumption while ensuring heat dissipation performance.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation device for a low-voltage AC wind turbine pitch drive, characterized in that: It includes a heat insulation component, which includes a heat insulation box (1), and a first heat insulation plate (2) and a second heat insulation plate (3) are provided on both sides of the heat insulation box (1); It also includes a heat dissipation assembly, which includes a cooling fan (4) and an air inlet hose (6). The cooling fan (4) is installed on one side of the pitch drive body (5). An exhaust pipe (21) is fixedly installed on the outside of the cooling fan (4). The exhaust pipe (21) is slidably engaged with a through hole (22) on the surface of the first heat insulation plate (2). The pitch drive body (5) is fixedly installed at the bottom of the heat insulation box (1). The bottom of the air inlet hose (6) is fixedly installed on the second heat insulation plate (3). The top of the air inlet hose (6) leads to the outside of the cabin. It also includes an adjustment assembly, which includes two sets of movable seats (7). The two sets of movable seats (7) are respectively installed in two sets of threaded grooves with opposite directions on the surface of the bidirectional lead screw (8). The two sets of movable seats (7) are fixedly connected to the top middle of the first heat insulation plate (2) and the second heat insulation plate (3) respectively through the first connecting frame (9).

2. The heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 1, characterized in that: The two ends of the bidirectional lead screw (8) are rotatably mounted on the inner side of the first mounting plate (10), and the first mounting plate (10) is fixedly mounted on the top inner wall of the heat insulation box (1).

3. The heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 2, characterized in that: One end of the bidirectional lead screw (8) is connected to the output end of the motor (11), and the motor (11) is fixedly installed on the outside of the first mounting plate (10).

4. The heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 1, characterized in that: The top and bottom sides of the first heat insulation plate (2) and the second heat insulation plate (3) are fixedly connected to one end of the second connecting frame (12), and the other end of the second connecting frame (12) is fixedly connected to the slide (13).

5. A heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 4, characterized in that: The slide block (13) is slidably mounted on the surface of the slide rod (14), and the two ends of the slide rod (14) are fixedly mounted on the second mounting plate (15). The second mounting plate (15) is fixedly connected to the top or bottom of the heat insulation box (1).

6. The heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 1, characterized in that: The heat insulation box (1) has mounting grooves (16) fixedly installed in the middle of its other two sides, and a connecting plate (17) is sealed and snapped into the mounting groove (16).

7. A heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 6, characterized in that: The connecting plate (17) includes an upper clamping plate (1701) and a lower clamping plate (1702). The upper clamping plate (1701) has clamping posts (1703) fixedly installed on both sides of its bottom. The lower clamping plate (1702) has clamping grooves (1704) on both sides of its top. The clamping posts (1703) are clamped into the clamping grooves (1704).

8. A heat dissipation device for a low-voltage AC wind turbine pitch driver according to claim 1, characterized in that: A controller body (18) is fixedly installed on the top of the heat insulation box (1). A first temperature sensor (19) is installed on one side of the controller body (18). A second temperature sensor (20) is installed on the inner wall of the heat insulation box (1). The first temperature sensor (19) and the second temperature sensor (20) are electrically connected to the controller.

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