Wind turbine set control device of thermal power plant

Abstract

The invention belongs to the technical field of thermal power generation, and particularly relates to a thermal power plant fan set control device which comprises a cabinet body and a plurality of dustproof nets and further comprises a plurality of fixing plates, the fixing plates are fixedly connected to the two sides of the cabinet body respectively, and the dustproof nets are located in inner cavities of the fixing plates respectively. Two sliding grooves are formed in the inner wall of each fixing plate, a radiator is arranged in each fixing plate, the two ends of the radiator are located in the two sliding grooves respectively and are in sliding connection with the two sliding grooves respectively, and lead screws are in threaded connection with the interiors of the two ends of the radiator respectively; and the multiple first rotating grooves are formed in the inner walls of the multiple sliding grooves correspondingly, and rotating rods are rotationally connected into the multiple first rotating grooves correspondingly. According to the invention, the positions of the multiple radiators are adjusted, so that the multiple radiators can carry out precise heat dissipation on the heat concentration part in the cabinet body; the heat dissipation effect of the whole device is improved, and concentrated heat can be rapidly dissipated.

Description

Technical Field

[0001] This invention belongs to the field of thermal power generation technology, and in particular relates to a control device for wind turbine units in thermal power plants. Background Technology

[0002] The control device for the fan units of a thermal power plant is an integrated control system that enables automated start-up and shutdown, speed regulation, operating condition adjustment, fault protection, and remote coordination for core fan equipment such as induced draft fans, forced draft fans, and primary air fans in the power plant. It is the core control unit for the stable operation of the boiler combustion system and flue gas emission system in a thermal power plant.

[0003] Traditional control devices employ fixed-installation cooling fans. However, the heat generation of various electrical components within the control cabinet varies significantly: frequency converters, high-power relays, and PLC central processing units are core high-heat sources, while signal acquisition modules and wiring terminals are low-heat components. Due to the fixed installation method, the cooling fan can only form a single-direction airflow path and cannot adjust the airflow direction according to the distribution characteristics of internal heat sources. This makes it difficult to achieve precise and directional heat dissipation in areas with concentrated heat, resulting in poor heat dissipation performance and an inability to quickly dissipate heat. In view of this, we propose a control device for wind turbine units in thermal power plants. Summary of the Invention

[0004] The purpose of this invention is to provide a control device for wind turbine units in thermal power plants to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a control device for a wind turbine unit in a thermal power plant, comprising a cabinet and several dust screens, and further comprising: Several fixed plates are fixedly connected to both sides of the cabinet, and several dustproof nets are located in the inner cavity of several fixed plates. Two sliding grooves are opened on the inner wall of each fixed plate. A radiator is installed in the fixed plate, and the two ends of the radiator are located in the two sliding grooves and are slidably connected to the two sliding grooves respectively. A screw is threaded to both ends of the radiator. A plurality of first rotating grooves are respectively opened on the inner wall of a plurality of sliding grooves. A rotating rod is rotatably connected in each of the plurality of first rotating grooves, and one end of each of the plurality of rotating rods extends into the plurality of sliding grooves and is fixedly connected to a plurality of lead screws. Several rotating components are located within several fixed plates and are used to drive two corresponding rotating rods to rotate.

[0006] In this technical solution, the user can control the position of several heat sinks, thereby allowing several heat sinks to concentrate heat dissipation and improving the overall heat dissipation efficiency of the device.

[0007] In the above technical solution, the rotating component further includes: Two first gear slots are formed in the fixed plate and are respectively connected to two first rotating slots. A first bevel gear and a second bevel gear are rotatably connected in each of the two first gear slots, and the first bevel gear and the second bevel gear mesh with each other. The second rotating groove is formed inside the fixed plate and is connected to the two first gear grooves. A first connecting rod is rotatably connected inside the second rotating groove, and the two ends of the first connecting rod extend into the two first gear grooves and are fixedly connected to the two second bevel gears respectively. The second gear groove is formed on the inner wall of the second rotating groove. A third bevel gear and a fourth bevel gear are rotatably connected in the second gear groove, and the third bevel gear and the fourth bevel gear mesh with each other. The third bevel gear is fixedly connected to the periphery of the first connecting rod. The first servo motor is fixedly connected to the fixed plate, and the output shaft of the first servo motor passes through the fixed plate and extends into the second gear slot to be fixedly connected to the fourth bevel gear.

[0008] In this technical solution, it is ensured that the user can drive two rotating rods to rotate simultaneously.

[0009] In the above technical solution, one end of the first bevel gear is rotatably connected to the first rotating groove, both ends of the first connecting rod are rotatably connected to the two first gear grooves respectively, and the output shaft of the first servo motor is rotatably connected to the second gear groove.

[0010] In this technical solution, it is ensured that when the first bevel gear rotates, one end of the first bevel gear can rotate normally in the first rotating groove, and that when the first connecting rod rotates, both ends of the first connecting rod can rotate normally in the two first gear grooves respectively. At the same time, it is ensured that when the first servo motor is started, the output shaft of the first servo motor can rotate normally in the second gear groove.

[0011] Furthermore, the above technical solution also includes: Two limiting grooves are respectively opened on the inner walls of the two first rotating grooves. Each of the two limiting grooves is slidably connected with a pressing rod, and the two pressing rods are in contact with the two rotating rods respectively. Each of the two pressing rods is threaded with a screw. A drive assembly, located within a fixed plate, is used to drive two screws to rotate.

[0012] In this technical solution, the lead screw is ensured to rotate without being affected by external factors, thereby improving the overall stability of the device.

[0013] In the above technical solution, the driving component further includes: The third rotating groove is formed inside the fixed plate and is connected to the two limiting grooves respectively. The third rotating groove is rotatably connected to the second connecting rod, and the two ends of the second connecting rod extend into the two limiting grooves respectively and are fixedly connected to the two screws respectively. The third gear groove is formed on the inner wall of the third rotating groove. The fifth bevel gear and the sixth bevel gear are rotatably connected in the third gear groove and mesh with each other. The fifth bevel gear is fixedly connected to the periphery of the second connecting rod. The second servo motor is fixedly connected to the fixed plate, and the output shaft of the second servo motor passes through the fixed plate and extends into the third gear slot to be fixedly connected to the sixth bevel gear.

[0014] In this technical solution, it is ensured that the user can drive both screws to rotate simultaneously.

[0015] In the above technical solution, the screw is located in the limiting groove and is rotatably connected to the limiting groove. The threads on the two screws have opposite directions and the thread pitch is the same.

[0016] In this technical solution, it is ensured that when the screw rotates, the screw can rotate normally within the limiting groove. Furthermore, because the threads on the two screws have opposite directions of rotation and the thread pitch is the same, when the two screws rotate, the two extrusion rods will be acted upon by the opposite threads on the two screws, and will move away from or towards each other.

[0017] In the above technical solution, further, the two ends of the second connecting rod are rotatably connected to the two limiting grooves respectively, and the output shaft of the second servo motor is rotatably connected to the third gear groove.

[0018] In this technical solution, it is ensured that when the second connecting rod rotates, both ends of the second connecting rod can rotate normally in the two limit slots respectively, and it is also ensured that when the second servo motor is started, the output shaft of the second servo motor can rotate normally in the third gear slot.

[0019] In the above technical solution, the lead screw is located in the slide groove and is rotatably connected to the slide groove. One end of the rotating rod is rotatably connected to the slide groove. The threads on the two lead screws have the same direction of rotation and the same thread pitch.

[0020] In this technical solution, it is ensured that when the lead screw rotates, it can rotate normally within the slide groove, and that when the rotating rod rotates, one end of the rotating rod can rotate normally within the slide groove. At the same time, because the threads on the corresponding two lead screws have the same direction of rotation and the same thread pitch, when the corresponding two lead screws rotate, the radiator can move normally up and down along the two slide grooves under the action of the two lead screw threads.

[0021] The beneficial effects of this invention are: 1. The control device for the wind turbine unit of this thermal power plant, through the setting of a fixed plate, sliding groove, and radiator, allows the radiator to move up and down along two corresponding sliding grooves. Through the setting of a lead screw, a first rotating groove, a rotating rod, a first gear groove, a first bevel gear, a second bevel gear, a second rotating groove, a first connecting rod, a second gear groove, a third bevel gear, a fourth bevel gear, and a first servo motor, the user can drive the radiator up and down. The design of the above structure realizes the adjustment of the position of several radiators, allowing several radiators to precisely dissipate heat from the heat-concentrated areas inside the cabinet, improving the overall heat dissipation effect of the device, and allowing concentrated heat to be dissipated quickly.

[0022] 2. The control device for the wind turbine unit of this thermal power plant, through the setting of a limiting groove and a squeezing rod, allows the squeezing rod to move along the limiting groove. Through the setting of a screw, a third rotating groove, a second connecting rod, a third gear groove, a fifth bevel gear, a sixth bevel gear, and a second servo motor, the user can control the two squeezing rods to move away from each other or closer to each other. The design of the above structure realizes the locking of the two rotating rods, prevents the two rotating rods from rotating due to the influence of external vibration, and improves the stability of the overall device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the regional structure of the fixing plate in this invention; Figure 3 This is a cross-sectional view of the fixing plate in this invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the fixing plate in this invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C; Figure 8 This is a schematic diagram of the regional structure of the second connecting rod in this invention.

[0024] The markings in the diagram are as follows: 1. Cabinet; 2. Dustproof net; 3. Fixing plate; 4. Slide groove; 5. Radiator; 6. Lead screw; 7. First rotating groove; 8. Rotating rod; 9. First gear groove; 10. First bevel gear; 11. Second bevel gear; 12. Second rotating groove; 13. First connecting rod; 14. Second gear groove; 15. Third bevel gear; 16. Fourth bevel gear; 17. First servo motor; 18. Limiting groove; 19. Pressing rod; 20. Screw; 21. Third rotating groove; 22. Second connecting rod; 23. Third gear groove; 24. Fifth bevel gear; 25. Sixth bevel gear; 26. Second servo motor. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Figure 8 This application will be described in further detail.

[0026] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] Example 1: This example provides a control device for a wind turbine unit in a thermal power plant, including a cabinet 1 and several dustproof nets 2, and also includes: Several fixed plates 3 are fixedly connected to both sides of the cabinet 1, and several dustproof nets 2 are located in the inner cavity of several fixed plates 3. Two sliding grooves 4 are opened on the inner wall of several fixed plates 3. A radiator 5 is installed in the fixed plate 3, and the two ends of the radiator 5 are located in the two sliding grooves 4 and are slidably connected to the two sliding grooves 4 respectively. A screw rod 6 is threaded into both ends of the radiator 5. A plurality of first rotating grooves 7 are respectively opened on the inner wall of a plurality of sliding grooves 4. A rotating rod 8 is rotatably connected in each of the plurality of first rotating grooves 7, and one end of each of the plurality of rotating rods 8 extends into the plurality of sliding grooves 4 and is fixedly connected to a plurality of lead screws 6 respectively. Several rotating components are located within several fixed plates 3, and are used to drive the corresponding two rotating rods 8 to rotate.

[0028] In use, the user drives the two rotating rods 8 to rotate by rotating the component, and the two rotating rods 8 drive the two lead screws 6 to rotate respectively. This causes the radiator 5 to move up and down along the two slide grooves 4 under the action of the threads of the two lead screws 6. This allows the user to control the position of several radiators 5, thereby allowing several radiators 5 to concentrate heat dissipation and improve the overall heat dissipation efficiency of the device.

[0029] Example 2: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions described in the above examples, it also has the following technical features: the rotating component includes: Two first gear slots 9 are formed in the fixed plate 3 and are respectively connected to two first rotating slots 7. A first bevel gear 10 and a second bevel gear 11 are rotatably connected in each of the two first gear slots 9, and the first bevel gear 10 and the second bevel gear 11 mesh with each other. The second rotating groove 12 is opened in the fixed plate 3 and is connected to the two first gear grooves 9. The second rotating groove 12 is rotatably connected to the first connecting rod 13, and the two ends of the first connecting rod 13 extend into the two first gear grooves 9 and are fixedly connected to the two second bevel gears 11 respectively. The second gear groove 14 is formed on the inner wall of the second rotating groove 12. The third bevel gear 15 and the fourth bevel gear 16 are rotatably connected in the second gear groove 14, and the third bevel gear 15 and the fourth bevel gear 16 mesh with each other. The third bevel gear 15 is fixedly connected to the periphery of the first connecting rod 13. The first servo motor 17 is fixedly connected to the fixed plate 3, and the output shaft of the first servo motor 17 passes through the fixed plate 3 and extends into the second gear groove 14 to be fixedly connected to the fourth bevel gear 16.

[0030] In operation, the user starts the first servo motor 17, causing its output shaft to drive the fourth bevel gear 16 to rotate in the second gear slot 14. The fourth bevel gear 16 then drives the third bevel gear 15 to rotate in the second gear slot 14, which in turn drives the first connecting rod 13 to rotate in the second rotating slot 12. The first connecting rod 13 then drives the two second bevel gears 11 to rotate in the two first gear slots 9, which in turn drive the two first bevel gears 10 to rotate. The two first bevel gears 10 then drive the two lead screws 6 to rotate via the two rotating rods 8, ensuring that the user can simultaneously drive the two rotating rods 8 to rotate.

[0031] Example 3: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions of the above examples, it also has the following technical features: one end of the first bevel gear 10 is rotatably connected to the first rotating groove 7; both ends of the first connecting rod 13 are rotatably connected to the two first gear grooves 9 respectively; and the output shaft of the first servo motor 17 is rotatably connected to the second gear groove 14.

[0032] Specifically, it is ensured that when the first bevel gear 10 rotates, one end of the first bevel gear 10 can rotate normally in the first rotating groove 7, and that when the first connecting rod 13 rotates, both ends of the first connecting rod 13 can rotate normally in the two first gear grooves 9 respectively. At the same time, it is ensured that when the first servo motor 17 is started, the output shaft of the first servo motor 17 can rotate normally in the second gear groove 14.

[0033] Example 4: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions described in the above examples, it also has the following technical features: Two limiting grooves 18 are respectively opened on the inner walls of the two first rotating grooves 7. Each limiting groove 18 is slidably connected with a pressing rod 19, and the two pressing rods 19 are respectively in contact with the two rotating rods 8. Each pressing rod 19 is threadedly connected with a screw 20. The drive assembly is located inside the fixed plate 3 and is used to drive the two screws 20 to rotate.

[0034] In use, the user drives the two screws 20 to rotate within the two pressing rods 19 via the drive assembly. This causes the two pressing rods 19 to be acted upon by the opposite threads on the two screws 20, moving them away from or towards each other. When the two pressing rods 19 move away from each other, they press against the circumference of the two rotating rods 8, fixing them in the two first rotating grooves 7 and preventing them from rotating. This ensures that the lead screw 6 is not affected by external factors and thus improves the stability of the overall device.

[0035] Example 5: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions described in the above examples, it also has the following technical features: the drive component includes: The third rotating groove 21 is opened in the fixed plate 3 and is connected to the two limiting grooves 18 respectively. The third rotating groove 21 is rotatably connected to the second connecting rod 22, and the two ends of the second connecting rod 22 extend into the two limiting grooves 18 respectively and are fixedly connected to the two screws 20 respectively. The third gear groove 23 is formed on the inner wall of the third rotating groove 21. The fifth bevel gear 24 and the sixth bevel gear 25 are rotatably connected in the third gear groove 23, and the fifth bevel gear 24 and the sixth bevel gear 25 mesh with each other. The fifth bevel gear 24 is fixedly connected to the periphery of the second connecting rod 22. The second servo motor 26 is fixedly connected to the fixed plate 3, and the output shaft of the second servo motor 26 passes through the fixed plate 3 and extends into the third gear groove 23 to be fixedly connected to the sixth bevel gear 25.

[0036] In operation, the user starts the second servo motor 26, causing its output shaft to drive the sixth bevel gear 25 to rotate within the third gear slot 23. This causes the sixth bevel gear 25 to drive the fifth bevel gear 24 to rotate within the third gear slot 23, which in turn drives the second connecting rod 22 to rotate within the third rotating slot 21. Consequently, both ends of the second connecting rod 22 drive the two screws 20 to rotate within the two pressing rods 19, ensuring that the user can drive both screws 20 to rotate simultaneously.

[0037] Example 6: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions of the above examples, it also has the following technical features: the screw 20 is located in the limiting groove 18 and is rotatably connected to the limiting groove 18; the threads on the two screws 20 have opposite directions of rotation and the same thread pitch.

[0038] Specifically, this ensures that when the screw 20 rotates, it can rotate normally within the limiting groove 18. Furthermore, because the threads on the two screws 20 have opposite directions of rotation and the same thread pitch, when the two screws 20 rotate, the two extrusion rods 19 will be acted upon by the opposite threads on the two screws 20, causing them to move away from or towards each other.

[0039] Example 7: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions of the above examples, it also has the following technical features: the two ends of the second connecting rod 22 are rotatably connected to the two limiting grooves 18 respectively, and the output shaft of the second servo motor 26 is rotatably connected to the third gear groove 23.

[0040] Specifically, it is ensured that when the second connecting rod 22 rotates, both ends of the second connecting rod 22 can rotate normally within the two limiting grooves 18 respectively, and it is also ensured that when the second servo motor 26 is started, the output shaft of the second servo motor 26 can rotate normally within the third gear groove 23.

[0041] Example 8: This example provides a control device for a wind turbine unit in a thermal power plant. In addition to the technical solutions of the above examples, it also has the following technical features: the lead screw 6 is located in the slide groove 4 and is rotatably connected to the slide groove 4; one end of the rotating rod 8 is rotatably connected to the slide groove 4; the threads on the two lead screws 6 have the same direction of rotation and the same thread pitch.

[0042] Specifically, it is ensured that when the lead screw 6 rotates, it can rotate normally within the slide groove 4, and that when the rotating rod 8 rotates, one end of the rotating rod 8 can rotate normally within the slide groove 4. At the same time, because the threads on the corresponding two lead screws 6 have the same direction of rotation and the same thread pitch, when the corresponding two lead screws 6 rotate, the radiator 5 can move normally up and down along the two slide grooves 4 under the action of the threads of the two lead screws 6.

[0043] Working principle: In use, the user starts the first servo motor 17, causing the output shaft of the first servo motor 17 to drive the fourth bevel gear 16 to rotate in the second gear groove 14. The fourth bevel gear 16 then drives the third bevel gear 15 to rotate in the second gear groove 14. The third bevel gear 15 then drives the first connecting rod 13 to rotate in the second rotating groove 12. The first connecting rod 13 then drives the two second bevel gears 11 to rotate in the two first gear grooves 9. The two second bevel gears 11 then drive the two first bevel gears 10 to rotate. The two first bevel gears 10 then drive the two lead screws 6 to rotate through the two rotating rods 8. This causes the radiator 5 to move up and down along the two sliding grooves 4 under the action of the threads of the two lead screws 6. This allows the user to control the position of several radiators 5, thereby enabling several radiators 5 to concentrate heat dissipation and improve the overall heat dissipation efficiency of the device. In use, the user starts the second servo motor 26, causing the output shaft of the second servo motor 26 to drive the sixth bevel gear 25 to rotate in the third gear groove 23. The sixth bevel gear 25 then drives the fifth bevel gear 24 to rotate in the third gear groove 23, which in turn drives the second connecting rod 22 to rotate in the third rotating groove 21. This causes the two ends of the second connecting rod 22 to drive the two screws 20 to rotate in the two pressing rods 19. The two pressing rods 19 are then subjected to the action of the opposite threads on the two screws 20, causing them to move away from or towards each other. When the two pressing rods 19 move away from each other, they will press against the circumference of the two rotating rods 8, fixing the two rotating rods 8 in the two first rotating grooves 7 and preventing them from rotating. This ensures that the lead screw 6 will not be affected by external factors and thus improves the stability of the overall device.

[0044] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A control device for a wind turbine unit in a thermal power plant, comprising a cabinet (1) and several dustproof nets (2), characterized in that, Also includes: Several fixed plates (3) are fixedly connected to both sides of the cabinet (1), and several dustproof nets (2) are located in the inner cavity of several fixed plates (3). Two sliding grooves (4) are opened on the inner wall of several fixed plates (3). A radiator (5) is provided in the fixed plate (3), and the two ends of the radiator (5) are located in the two sliding grooves (4) and are slidably connected to the two sliding grooves (4). A screw rod (6) is threaded into both ends of the radiator (5). A plurality of first rotating grooves (7) are respectively opened on the inner wall of a plurality of sliding grooves (4). A rotating rod (8) is rotatably connected in each of the plurality of first rotating grooves (7), and one end of each of the plurality of rotating rods (8) extends into the plurality of sliding grooves (4) and is fixedly connected to a plurality of lead screws (6). Several rotating components are located in several fixed plates (3) and are used to drive the corresponding two rotating rods (8) to rotate.

2. The control device for a wind turbine unit in a thermal power plant according to claim 1, characterized in that, The rotating assembly includes: Two first gear slots (9) are formed in the fixed plate (3) and are respectively connected to two first rotating slots (7). A first bevel gear (10) and a second bevel gear (11) are rotatably connected in both first gear slots (9), and the first bevel gear (10) and the second bevel gear (11) mesh with each other. The second rotating groove (12) is opened in the fixed plate (3) and is connected to the two first gear grooves (9). The second rotating groove (12) is rotatably connected to the first connecting rod (13), and the two ends of the first connecting rod (13) extend into the two first gear grooves (9) and are fixedly connected to the two second bevel gears (11). The second gear groove (14) is opened on the inner wall of the second rotating groove (12). The second gear groove (14) is rotatably connected to the third bevel gear (15) and the fourth bevel gear (16), and the third bevel gear (15) and the fourth bevel gear (16) mesh with each other. The third bevel gear (15) is fixedly connected to the periphery of the first connecting rod (13). The first servo motor (17) is fixedly connected to the fixed plate (3), and the output shaft of the first servo motor (17) passes through the fixed plate (3) and extends into the second gear groove (14) to be fixedly connected to the fourth bevel gear (16).

3. The control device for a wind turbine unit in a thermal power plant according to claim 2, characterized in that, One end of the first bevel gear (10) is rotatably connected to the first rotating groove (7), both ends of the first connecting rod (13) are rotatably connected to the two first gear grooves (9) respectively, and the output shaft of the first servo motor (17) is rotatably connected to the second gear groove (14).

4. The control device for a wind turbine unit in a thermal power plant according to claim 1, characterized in that, Also includes: Two limiting grooves (18) are respectively opened on the inner wall of two first rotating grooves (7). Each of the two limiting grooves (18) is slidably connected with a pressing rod (19), and the two pressing rods (19) are in contact with the two rotating rods (8). Each of the two pressing rods (19) is threadedly connected with a screw (20). A drive assembly is located inside a fixed plate (3) and is used to drive two screws (20) to rotate.

5. A control device for a wind turbine unit in a thermal power plant according to claim 4, characterized in that, The driving component includes: The third rotating groove (21) is opened in the fixed plate (3) and is connected to the two limiting grooves (18) respectively. The third rotating groove (21) is rotatably connected to the second connecting rod (22), and the two ends of the second connecting rod (22) extend into the two limiting grooves (18) respectively and are fixedly connected to the two screws (20) respectively. The third gear groove (23) is opened on the inner wall of the third rotating groove (21). The fifth bevel gear (24) and the sixth bevel gear (25) are rotatably connected in the third gear groove (23), and the fifth bevel gear (24) and the sixth bevel gear (25) mesh with each other. The fifth bevel gear (24) is fixedly connected to the periphery of the second connecting rod (22). The second servo motor (26) is fixedly connected to the fixed plate (3), and the output shaft of the second servo motor (26) passes through the fixed plate (3) and extends into the third gear groove (23) to be fixedly connected to the sixth bevel gear (25).

6. A control device for a wind turbine unit in a thermal power plant according to claim 4, characterized in that, The screw (20) is located in the limiting groove (18) and is rotatably connected to the limiting groove (18). The threads on the two screws (20) have opposite directions and the same thread pitch.

7. A control device for a wind turbine unit in a thermal power plant according to claim 5, characterized in that, The two ends of the second connecting rod (22) are rotatably connected to the two limiting grooves (18) respectively, and the output shaft of the second servo motor (26) is rotatably connected to the third gear groove (23).

8. A control device for a wind turbine unit in a thermal power plant according to claim 1, characterized in that, The lead screw (6) is located in the slide groove (4) and is rotatably connected to the slide groove (4). One end of the rotating rod (8) is rotatably connected to the slide groove (4). The threads on the two lead screws (6) have the same direction of rotation and the same thread pitch.

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