Low-temperature-resistant wind generating set

Abstract

The utility model relates to the technical field of wind power generation, in particular to a low-temperature-resistant wind generating set which comprises a generator cabin body and an auxiliary assembly, the generator cabin body is composed of a shell, a main shaft, a gear box and a generator body, the gear box is connected in the shell, and one end of the gear box is connected with the main shaft. The other end of the gearbox is connected with the generator body, the auxiliary assembly is connected to the shell, and the auxiliary assembly comprises a heat dissipation assembly, a heating assembly, a movable base, a lead screw, a guide rod and a driving device. According to the utility model, the heat dissipation assembly and the heating assembly are in contact with the gearbox shell in turn, the heat dissipation assembly improves the heat dissipation capability of the gearbox through the heat dissipation plate, and the heating assembly is heated through the PTC ceramic heating sheet and conducts heat to the second soaking plate through the second heat bridge to heat the gearbox, so that frozen lubricating grease is melted; and normal operation in a low-temperature state is maintained.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically to a low-temperature resistant wind turbine generator set. Background Technology

[0002] As a green energy source, wind turbines have been widely installed and applied throughout China, especially in the wind-rich Northwest region, with the government's support and encouragement. However, the Northwest region is located in a frigid area, where the lowest temperature can drop to below -40°C. The equipment inside the wind turbine nacelle cannot operate for long periods in such a cold environment, and low temperatures can damage the wind turbine equipment and shorten its lifespan.

[0003] Chinese Patent CN216866908U discloses a wind turbine generator set, comprising: a nacelle; a gearbox disposed within the nacelle, the gearbox having a lubrication system; an impeller disposed outside the nacelle and drivenly connected to the input end of the gearbox; a generator disposed within the nacelle and drivenly connected to the output end of the gearbox to convert the kinetic energy of the impeller into electrical energy, the generator being equipped with a heat dissipation assembly capable of dissipating the hot airflow generated by the generator; a heat exchange component connected to the nacelle, the heat exchange component including a housing and a lubrication radiator located within the housing, the lubrication radiator being connected to the lubrication system, the lubricating fluid in the lubrication system being able to enter the lubrication radiator and exchange heat with it; the outlet of the heat dissipation assembly being located within the housing to guide the hot airflow into the housing and heat the lubricating fluid entering the lubrication radiator, thereby starting the gearbox. This design makes the wind turbine generator set suitable for cold environments and facilitates rapid thawing of the lubricating fluid during startup.

[0004] However, in the above technical solution, the gearbox is started by guiding hot air into the box and heating the lubricant entering the lubrication radiator. However, the device relies on the hot air generated during the start-up of the equipment for heating, which will cause it to fail in zero heat input scenarios and extremely cold start-ups. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a low-temperature resistant wind turbine generator set.

[0006] The technical solution of this utility model is as follows: A low-temperature resistant wind turbine generator set includes a generator nacelle body, which is composed of a housing, a main shaft, a gearbox, and the generator body. The gearbox is connected inside the housing, with one end connected to the main shaft and the other end connected to the generator body. An auxiliary assembly is connected to the housing and includes a heat dissipation assembly, a heating assembly, a movable base, a lead screw, a guide rod, and a drive device. The lead screw and guide rod are arranged in parallel and are disposed inside the housing. Two parallel movable bases are connected to both the lead screw and the guide rod. The drive device is connected to one end of the lead screw, and the heat dissipation assembly is connected to the movable base. The components include a heat dissipation assembly and a heating assembly; the heat dissipation assembly includes a heat dissipation plate, a first heat bridge, a first heat spreader plate, and a first connecting member, the two ends of the parallel first connecting member are respectively connected to the heat dissipation plate and the first heat spreader plate, the first heat spreader plate is slidably connected to the gearbox, the two ends of multiple first heat bridges are respectively connected to the first heat spreader plate and the heat dissipation plate, and the heat dissipation plate is connected to the movable base; the heating assembly includes a heating plate, a second heat bridge, a second heat spreader plate, and a second connecting member, the two ends of the parallel second connecting member are respectively connected to the second heat spreader plate and the heating plate, the heating plate is connected to the movable base, and the two ends of multiple second heat bridges are respectively connected to the heating plate and the second heat spreader plate;

[0007] When the auxiliary components are in use, the heat dissipation component and the heating component move horizontally along the lead screw and guide rod with the moving base to switch between heating and heat dissipation functions. The heat dissipation component and the heating component correspond to the different needs of the gearbox at different temperatures.

[0008] Preferably, the auxiliary components also include two fixed seats arranged in parallel, which are rotatably connected to both ends of the lead screw; two support seats arranged in parallel, which are connected to both ends of the guide rod; a temperature sensor connected to the housing; and multiple counterweights connected to the first and second connecting parts.

[0009] Preferably, the heat sink consists of a first arc-shaped plate and heat sink fins, the first arc-shaped plate is connected to the movable base, and multiple heat sink fins are connected to the first arc-shaped plate.

[0010] Preferably, the first connector and the second connector have the same structure. The first connector includes a horizontal plate and a vertical plate. The two horizontal plates are arranged in parallel. The two ends of the two vertical plates are rotatably connected to the two ends of the two horizontal plates respectively. One horizontal plate is connected to the heating plate or the heat dissipation plate, and the other horizontal plate is connected to the first heat spreader or the second heat spreader.

[0011] Preferably, both the first and second heat spreaders are connected to guide plates on the side near the gearbox.

[0012] Preferably, the counterweight includes a mounting frame and counterweight blocks, with both ends of the mounting frame connected to a horizontal plate, and multiple counterweight blocks connected to the mounting frame.

[0013] Preferably, the heating plate consists of a second arc-shaped plate and a PTC ceramic heating element. The two ends of the second arc-shaped plate are connected to the movable seat, the PTC ceramic heating element is connected to the second arc-shaped plate, and the PTC ceramic heating element is connected to the second thermal bridge.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] In this invention, the moving seat can drive the heat dissipation component and the heating component to move horizontally by moving along the lead screw and guide rod. When the two move horizontally, the heat dissipation component and the heating component take turns contacting the gearbox housing. The heat dissipation component enhances the heat dissipation capacity of the gearbox through the heat dissipation plate, while the heating component heats the gearbox through the PTC ceramic heating element and conducts the heat to the second heat spreader plate through the second thermal bridge, thereby melting the frozen lubricating grease and maintaining its normal operation at low temperature. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a schematic diagram of the auxiliary component structure;

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A;

[0019] Figure 4 for Figure 2 Enlarged view of the structure at point B;

[0020] Figure 5 This is a schematic diagram of the connector structure.

[0021] Reference numerals: 1. Generator nacelle main body; 2. Housing; 3. Main shaft; 4. Gearbox; 5. Generator main body; 6. Moving seat; 7. Lead screw; 8. Guide rod; 9. Drive device; 10. Heat sink; 11. First thermal bridge; 12. First heat spreader; 13. First connector; 14. Heating plate; 15. Second thermal bridge; 16. Second heat spreader; 17. Second connector; 18. Fixed seat; 19. Support seat; 20. Temperature sensor; 21. Counterweight; 22. First arc-shaped plate; 23. Heat sink fins; 24. Horizontal plate; 25. Vertical plate; 26. Guide plate; 27. Mounting bracket; 28. Counterweight block; 29. ​​Second arc-shaped plate; 30. PTC ceramic heating element. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-5As shown, this utility model proposes a low-temperature resistant wind turbine generator set, including a generator nacelle body 1 and auxiliary components. The generator nacelle body 1 consists of a housing 2, a main shaft 3, a gearbox 4, and a generator body 5. The gearbox 4 is connected inside the housing 2. A PLC controller or other controller is installed inside the housing 2 to control the auxiliary components. One end of the gearbox 4 is connected to the main shaft 3, and the other end of the gearbox 4 is connected to the generator body 5. The auxiliary components are connected to the housing 2 and include a heat dissipation component, a heating component, a movable base 6, a lead screw 7, a guide rod 8, and a drive device 9. The lead screw 7 and the guide rod 8 are arranged in parallel inside the housing 2. Two parallel movable bases 6 are connected to both the lead screw 7 and the guide rod 8. The drive device 9 is connected to one end of the lead screw 7. The heat dissipation component and the heating component are connected to the movable base 6. The heat dissipation component includes a heat sink 10, a first thermal bridge 11, and a first heat spreader. Plate 12 and first connecting member 13 are arranged in parallel. The two ends of the first connecting member 13 are connected to the heat sink 10 and the first heat spreader 12, respectively. The first heat spreader 12 is slidably connected to the gearbox 4. The two ends of multiple first thermal bridges 11 are connected to the first heat spreader 12 and the heat sink 10, respectively. The heat sink 10 is connected to the movable seat 6. The heating component includes a heating plate 14, a second thermal bridge 15, a second heat spreader 16 and a second connecting member 17. The two ends of the second connecting member 17 are connected to the second heat spreader 16 and the heating plate 14, respectively. The heating plate 14 is connected to the movable seat 6. The two ends of multiple second thermal bridges 15 are connected to the heating plate 14 and the second heat spreader 16, respectively. When the auxiliary component is in use, the heat sink component and the heating component move horizontally along the lead screw 7 and the guide rod 8 with the movable seat 6 to switch between heating and heat dissipation functions. The heat sink component and the heating component correspond to the different needs of the gearbox 4 at different temperatures.

[0024] Example 2

[0025] like Figures 2-4 As shown, the present invention proposes a low-temperature resistant wind turbine generator set. Compared with Embodiment 1, this embodiment describes the detailed structure of the auxiliary components. The auxiliary components also include a fixed base 18, a support base 19, a temperature sensor 20, and a counterweight 21. Two fixed bases 18 are arranged in parallel, and the fixed bases 18 are rotatably connected to the bearings at both ends of the lead screw 7. Two support bases 19 are arranged in parallel, and the support bases 19 are connected to both ends of the guide rod 8. The temperature sensor 20 is connected to the housing 2. Multiple counterweights 21 are provided, and the counterweights 21 are connected to the first connecting member 13 and the second connecting member 17.

[0026] In an optional embodiment, the heat sink 10 is composed of a first arc-shaped plate 22 and heat sink fins 23. The first arc-shaped plate 22 is connected to the movable base 6, and a plurality of heat sink fins 23 are connected to the first arc-shaped plate 22.

[0027] In an optional embodiment, the first connector 13 and the second connector 17 have the same structure. The first connector 13 includes a horizontal plate 24 and a vertical plate 25. The two horizontal plates 24 are arranged in parallel, and the two ends of the two vertical plates 25 are rotatably connected to the two ends of the two horizontal plates 24 respectively. Any one of the horizontal plates 24 is connected to the heating plate 14 or the heat dissipation plate 10, and the other horizontal plate 24 is connected to the first heat spreader 12 or the second heat spreader 16.

[0028] In an optional embodiment, both the first heat spreader 12 and the second heat spreader 16 are connected to a guide plate 26 on the side near the gearbox 4; the guide plate 26 is arc-shaped to facilitate the contact and compression of the first connector 13 and the second connector 17 between the first heat spreader 12 and the second heat spreader 16 and the gearbox 4.

[0029] In an optional embodiment, the counterweight 21 includes a mounting frame 27 and counterweight blocks 28. The two ends of the mounting frame 27 are respectively connected to the horizontal plate 24, and multiple counterweight blocks 28 are connected to the mounting frame 27. The counterweight blocks 28 are made of small metal blocks to reduce the impact on the vertical plate 25.

[0030] In an optional embodiment, the heating plate 14 consists of a second arc-shaped plate 29 and a PTC ceramic heating element 30. The two ends of the second arc-shaped plate 29 are connected to the movable seat 6, and the PTC ceramic heating element 30 is connected to the second arc-shaped plate 29 and connected to the second thermal bridge 15. The PTC ceramic heating element 30 has a self-limiting temperature function to prevent the temperature from being too high.

[0031] In summary, when this utility model is in use, the main shaft 3 rotates under the drive of the fan blades. This rotation drives the gearbox 4 (i.e., the transmission) to input rotational power into the generator body 5 for power generation. During winter and summer weather conditions, the temperature sensor 20 installed inside the housing 2 detects the temperature inside the housing 2. When the set maximum and minimum temperatures are reached, a signal is sent to the controller. The controller then activates the drive unit 9, causing the two moving seats 6 to move horizontally along the lead screw 7 and guide rod 8. This movement causes the heating and cooling components to move. In summer, the first connecting member 13 in the cooling component approaches the gear. The gearbox 4 is guided by a guide plate 26 at one end, so that the first heat spreader 12 contacts the outer wall of the gearbox 4 and conducts heat through the first thermal bridge 11 to the first arc plate 22 and the heat dissipation fins 23. This increases the contact area with the air and improves the heat dissipation capacity of the gearbox 4. In winter, in the heating assembly, the second heat spreader 16 on the second connector 17 is guided by the guide plate 26 to contact the outer wall of the gearbox 4. The PTC ceramic heating element 30 is heated and the heat is transferred to the second heat spreader 16 through the second thermal bridge 15. The heat is conducted through the components to heat the gearbox 4 and prevent the lubricating grease inside the gearbox 4 from freezing and affecting its normal operation.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A low-temperature resistant wind turbine generator set, characterized in that, include The generator nacelle (1) consists of a housing (2), a main shaft (3), a gearbox (4) and a generator body (5). The gearbox (4) is connected inside the housing (2). One end of the gearbox (4) is connected to the main shaft (3), and the other end of the gearbox (4) is connected to the generator body (5). The auxiliary components are connected to the housing (2). The auxiliary components include a heat dissipation component, a heating component, a movable seat (6), a lead screw (7), a guide rod (8), and a drive device (9). The lead screw (7) and the guide rod (8) are arranged in parallel and are located inside the housing (2). Two movable seats (6) are connected to the lead screw (7) and the guide rod (8). The drive device (9) is connected to one end of the lead screw (7). The heat dissipation component and the heating component are connected to the movable seat (6). The heat dissipation assembly includes a heat sink (10), a first thermal bridge (11), a first heat spreader (12), and a first connector (13). The two ends of the parallel first connector (13) are connected to the heat sink (10) and the first heat spreader (12) respectively. The first heat spreader (12) is slidably connected to the gearbox (4). The two ends of the multiple first thermal bridges (11) are connected to the first heat spreader (12) and the heat sink (10) respectively. The heat sink (10) is connected to the movable seat (6). The heating assembly includes a heating plate (14), a second heat bridge (15), a second heat spreader (16), and a second connector (17). The two ends of the parallel second connector (17) are connected to the second heat spreader (16) and the heating plate (14) respectively. The heating plate (14) is connected to the movable base (6). The two ends of the multiple second heat bridges (15) are connected to the heating plate (14) and the second heat spreader (16) respectively. When the auxiliary components are in use, the heat dissipation component and the heating component move horizontally along the lead screw (7) and guide rod (8) with the moving base (6) to switch between heating and heat dissipation functions. The heat dissipation component and the heating component correspond to the different needs of the gearbox (4) at different temperatures.

2. The low-temperature resistant wind turbine generator set according to claim 1, characterized in that, The auxiliary components also include There are two fixed seats (18) arranged in parallel, and the fixed seats (18) are rotatably connected to both ends of the lead screw (7); There are two support seats (19) arranged in parallel, and the support seats (19) are connected to both ends of the guide rod (8); Temperature sensor (20) is connected to housing (2); The counterweight (21) is provided in multiple parts and is connected to the first connector (13) and the second connector (17).

3. A low-temperature resistant wind turbine generator set according to claim 1, characterized in that, The heat sink (10) consists of a first arc plate (22) and heat sink fins (23). The first arc plate (22) is connected to the movable base (6), and multiple heat sink fins (23) are connected to the first arc plate (22).

4. A low-temperature resistant wind turbine generator set according to claim 1, characterized in that, The first connector (13) has the same structure as the second connector (17). The first connector (13) includes a horizontal plate (24) and a vertical plate (25). The two horizontal plates (24) are arranged in parallel. The two vertical plates (25) are rotatably connected to the two ends of the two horizontal plates (24) respectively. Any one of the horizontal plates (24) is connected to the heating plate (14) or the heat dissipation plate (10), and the other horizontal plate (24) is connected to the first heat-spreading plate (12) or the second heat-spreading plate (16).

5. A low-temperature resistant wind turbine generator set according to claim 1, characterized in that, Guide plates (26) are connected to both the first heat spreader (12) and the second heat spreader (16) on the side near the gearbox (4).

6. A low-temperature resistant wind turbine generator set according to claim 1, characterized in that, The counterweight (21) includes a mounting frame (27) and counterweight blocks (28). The two ends of the mounting frame (27) are connected to the horizontal plate (24) respectively, and multiple counterweight blocks (28) are connected to the mounting frame (27).

7. A low-temperature resistant wind turbine generator set according to claim 1, characterized in that, The heating plate (14) consists of a second arc plate (29) and a PTC ceramic heating element (30). The two ends of the second arc plate (29) are connected to the movable seat (6). The PTC ceramic heating element (30) is connected to the second arc plate (29) and is connected to the second thermal bridge (15).

Images