Load testing device for wind turbine generator

Abstract

The utility model discloses a load testing device for a wind turbine generator, which belongs to the technical field of load testing of the wind turbine generator and comprises a fan assembly and a wind turbine generator body, a testing tunnel is fixedly mounted at the front end of the fan assembly, a fixing support is mounted in front of the testing tunnel, and a rotating assembly is rotatably mounted on the fixing support. The rotating assembly is composed of a rotating plate, a rotating shaft, a transmission bevel gear, a supporting roller and a bolt and nut assembly, the rotating shaft is fixedly installed at the lower end of the rotating plate, and the transmission bevel gear is fixedly installed at the lower end of the rotating shaft. The wind turbine generator system main body can be fixed on the rotating assembly to be tested, so that the driving assembly can drive the wind turbine generator system main body to rotate through the rotating assembly, and the wind turbine generator system main body can be conveniently and rapidly subjected to load testing by cooperating with the fan assembly and the testing tunnel.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine load testing, in particular to a load testing device for a wind turbine. Background Art

[0002] The main purpose of wind turbine load testing is to verify the ability of wind turbines to withstand loads under actual operating conditions, and to ensure the structural integrity and long-term operational stability of the turbine. Through testing, the load data of the turbine under different operating conditions can be obtained, providing a basis for the design optimization, performance evaluation and life prediction of the turbine. Wind turbine load testing usually includes the following aspects: Static load testing: When the turbine is stationary, the strength and stiffness of the turbine structure are tested by applying external force to simulate wind loads. Dynamic load testing: When the turbine is in operation, the dynamic response of the turbine is tested under the combined action of multiple loads such as wind loads, inertia loads, and control loads. Fatigue load testing: Simulates the fatigue accumulation effect of the turbine during long-term use, and evaluates the fatigue life of turbine components. When load testing a wind turbine, it is necessary to perform load testing on the wind turbine under different wind directions, because when the wind turbine is operating outdoors, it will face winds from different directions, and changes in wind direction will affect the direction and magnitude of the force on the wind turbine, thereby affecting its load characteristics. Under high wind speed and complex wind direction conditions, the wind turbine may be subjected to large fatigue loads, resulting in component damage. Therefore, load testing of wind turbines under different wind directions is of great significance, which not only helps to verify the rationality and adaptability of the design, improve safety and reliability, guide design and selection, but also promotes technological innovation and development. Utility Model Content

[0003] The main purpose of the utility model is to provide a load testing device for a wind turbine generator set, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A load testing device for a wind turbine generator system, comprising a wind turbine assembly and a wind turbine generator system body, wherein a test tunnel is fixedly installed at the front end of the wind turbine assembly, a fixed bracket is installed in front of the test tunnel, a rotating assembly is rotatably installed on the fixed bracket, and the rotating assembly consists of a rotating plate, a rotating shaft, a transmission bevel gear, a support roller and a bolt and nut assembly, the rotating shaft is fixedly installed at the lower end of the rotating plate, the transmission bevel gear is fixedly installed at the lower end of the rotating shaft, there are several support rollers distributed in a ring shape on the rotating plate, there are four bolt and nut assemblies and they are symmetrically fixedly installed at the upper end of the rotating plate, a driving assembly is fixedly installed on the fixed bracket, the driving assembly consists of a driving motor and a driving bevel gear, the driving bevel gear is fixedly installed on the output shaft of the driving motor, and the driving bevel gear is meshed with the transmission bevel gear, and the wind turbine generator system body is fixedly installed on the rotating assembly.

[0006] Preferably, the fixing bracket is composed of a mounting base and L-shaped supporting legs, and there are a plurality of L-shaped supporting legs that are symmetrically fixedly mounted on the lower end of the mounting base.

[0007] Preferably, a plurality of first fixing holes are provided on the mounting substrate, and the plurality of first fixing holes are distributed in a ring shape. An axial hole is provided on the mounting substrate between the plurality of first fixing holes.

[0008] Preferably, the rotating plate on the rotating assembly is located above the mounting base plate, and a plurality of second fixing holes are opened on the rotating plate, and the plurality of second fixing holes are distributed in a ring shape. A plurality of roller grooves are opened at the lower end of the rotating plate and on the inner sides of the plurality of second fixing holes, and the plurality of roller grooves are distributed in a ring shape. The support roller is rotatably installed in the roller groove, and the support roller contacts the upper end of the mounting base plate, the rotating shaft is rotatably installed in the shaft hole, and the transmission bevel gear is located below the mounting base plate.

[0009] Preferably, the driving motor on the driving assembly is fixedly mounted on the lower end of the mounting base.

[0010] Preferably, the wind turbine body is fixedly mounted on the upper end of the rotating plate by a bolt and nut assembly.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By setting a fixed bracket, and setting a rotating assembly and a driving assembly on the fixed bracket, the wind turbine body can be fixed on the rotating assembly for testing during load testing, so that the driving assembly can drive the wind turbine body to rotate through the rotating assembly, and then in conjunction with the wind turbine assembly and the test tunnel, different wind directions can be simulated conveniently and quickly to perform load testing on the wind turbine body, which ultimately helps to verify the rationality and adaptability of the wind turbine body design, improve the safety and reliability of the wind turbine body, guide the design and selection of the wind turbine body, and promote technological innovation and development. At the same time, the cooperation between the rotating assembly and the driving assembly can also make the efficiency of simulating different wind directions for load testing on the wind turbine body higher; by setting support rollers on the rotating assembly, the friction between the rotating assembly and the fixed bracket during rotation can be effectively reduced, thereby effectively reducing the power consumption of the driving assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a structural diagram of the fixed bracket, rotating assembly and wind turbine body of the utility model;

[0015] Figure 3 This is a structural diagram of the fixed bracket, rotating assembly, driving assembly and wind turbine body of the utility model;

[0016] Figure 4 This is a schematic structural diagram of the fixing bracket and the driving assembly of the present utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the support roller and the rotating plate after being separated;

[0018] Figure 6 It is a top view of the rotating assembly of the present invention.

[0019] In the figure: 1. Wind turbine assembly; 2. Test tunnel; 3. Fixed bracket; 4. Rotating assembly; 5. Drive assembly; 6. Wind turbine body; 7. Mounting base plate; 8. L-shaped support leg; 9. Shaft hole; 10. First fixing hole; 11. Rotating plate; 12. Rotating shaft; 13. Transmission bevel gear; 14. Support roller; 15. Bolt and nut assembly; 16. Second fixing hole; 17. Roller groove; 18. Drive motor; 19. Drive bevel gear. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, a load testing device for a wind turbine includes a wind turbine assembly 1 and a wind turbine body 6. A test tunnel 2 is fixedly installed at the front end of the wind turbine assembly 1, a fixed bracket 3 is installed in front of the test tunnel 2, and a rotating assembly 4 is rotatably installed on the fixed bracket 3. The rotating assembly 4 consists of a rotating plate 11, a rotating shaft 12, a transmission bevel gear 13, a support roller 14 and a bolt and nut assembly 15. The rotating shaft 12 is fixedly installed at the lower end of the rotating plate 11, the transmission bevel gear 13 is fixedly installed at the lower end of the rotating shaft 12, there are several support rollers 14 and they are distributed in an annular shape on the rotating plate 11, and there are four bolt and nut assemblies 15 that are symmetrically fixed to the rotating plate 11. At the upper end, a drive assembly 5 is fixedly mounted on the fixed bracket 3. The drive assembly 5 consists of a drive motor 18 and a drive bevel gear 19. The drive bevel gear 19 is fixedly mounted on the output shaft of the drive motor 18, and the drive bevel gear 19 is engaged with the transmission bevel gear 13. The wind turbine body 6 is fixedly mounted on the rotating assembly 4. When the wind turbine body 6 is subjected to a load test, the wind turbine body 6 can be fixed on the rotating assembly 4, and then the wind turbine assembly 1 is started. At this time, the wind turbine assembly 1 blows air to the wind turbine body 6 through the test tunnel 2, thereby performing a load test on the wind turbine body 6. At the same time, during the test, the effects of different wind directions on the wind turbine can be simulated. The load test of the group body 6 is carried out by simply starting the driving component 5. At this time, the driving component 5 will drive the rotating component 4 and the wind turbine group body 6 to rotate, so that the wind turbine group body 6 can change its direction. During the rotation of the rotating component 4, the supporting roller 14 thereon will generate friction rotation with the mounting base plate 7 on the fixed bracket 3. By setting the fixed bracket 3, the rotating component 4 and the driving component 5 are set on the fixed bracket 3. When the load test is carried out, the wind turbine group body 6 can be fixed on the rotating component 4 for testing, so that the driving component 5 can drive the wind turbine group body 6 to rotate through the rotating component 4, thereby cooperating with the wind turbine component 1, The test tunnel 2 can conveniently and quickly simulate different wind directions to perform load tests on the wind turbine body 6, which ultimately helps to verify the rationality and adaptability of the design of the wind turbine body 6, improve the safety and reliability of the wind turbine body 6, guide the design and selection of the wind turbine body 6, and promote technological innovation and development. At the same time, the cooperation between the rotating component 4 and the driving component 5 can also make the efficiency of simulating different wind directions to perform load tests on the wind turbine body 6 higher. By arranging a support roller 14 on the rotating component 4, the friction between the rotating component 4 and the fixed bracket 3 during rotation can be effectively reduced, thereby effectively reducing the power consumption of the driving component 5.

[0022] Furthermore, the fixing bracket 3 is composed of a mounting base 7 and an L-shaped support leg 8. There are several L-shaped support legs 8 that are symmetrically fixed to the lower end of the mounting base 7. The mounting base 7 is provided with several first fixing holes 10, and the several first fixing holes 10 are distributed in an annular manner. An axial hole 9 is provided on the mounting base 7 and between the several first fixing holes 10. The rotating plate 11 on the rotating assembly 4 is located above the mounting base 7, and the rotating plate 11 is provided with several second fixing holes 16, and the several second fixing holes 16 are distributed in an annular manner. The lower end of the rotating plate 11 is provided with several roller grooves 17 on the inner side of the several second fixing holes 16. If The roller grooves 17 are distributed in a ring shape, and the support roller 14 is rotatably installed in the roller groove 17, and the support roller 14 contacts the upper end of the mounting base 7. The rotating shaft 12 is rotatably installed in the shaft hole 9, and the transmission bevel gear 13 is located below the mounting base 7. The rotating plate 11 on the rotating component 4 can be fixed to the mounting base 7 on the fixed bracket 3 by bolts. When it is necessary to use the driving component 5 to drive the rotating component 4 to rotate, the bolts used to fix the rotating plate 11 can be removed first. When the rotating component 4 completes the rotation, it can be fixed to the mounting base 7 with bolts. The method is that the bolts only need to be installed and fixed in the first fixing hole 10 and the second fixing hole 16 at the same time.

[0023] Furthermore, the drive motor 18 on the drive assembly 5 is fixedly mounted on the lower end of the mounting base 7, and the wind turbine body 6 is fixedly mounted on the upper end of the rotating plate 11 through the bolt and nut assembly 15. When the drive assembly 5 is working, the drive motor 18 will drive the drive bevel gear 19 to rotate, and the drive bevel gear 19 will drive the transmission bevel gear 13, the rotating shaft 12 and the rotating plate 11 to rotate. When the rotating plate 11 rotates, it will drive the wind turbine body 6 installed thereon to rotate. At the same time, the rotating plate 11 will also drive the support roller 14 to rotate with the rotating shaft 12 as the axis. When the support roller 14 rotates with the rotating shaft 12 as the axis, the support roller 14 will generate friction with the mounting base 7, so that the support roller 14 will rotate in the roller groove 17.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. The scope of protection claimed in this utility model is defined by the attached claims and their equivalents.

Claims

1. A load testing device for a wind turbine generator system, comprising a wind turbine assembly (1) and a wind turbine generator system body (6), wherein a test tunnel (2) is fixedly mounted at the front end of the wind turbine assembly (1), and characterized in that: A fixed bracket (3) is installed in front of the test tunnel (2), and a rotating assembly (4) is rotatably installed on the fixed bracket (3). The rotating assembly (4) consists of a rotating plate (11), a rotating shaft (12), a transmission bevel gear (13), a support roller (14) and a bolt and nut assembly (15). The rotating shaft (12) is fixedly installed at the lower end of the rotating plate (11), the transmission bevel gear (13) is fixedly installed at the lower end of the rotating shaft (12), and the support roller (14) has a plurality of ring-shaped distributions on the rotating plate (11). The plate (11) has four bolt and nut assemblies (15) symmetrically fixedly mounted on the upper end of the rotating plate (11); the fixed bracket (3) is fixedly mounted with a driving assembly (5); the driving assembly (5) is composed of a driving motor (18) and a driving bevel gear (19); the driving bevel gear (19) is fixedly mounted on the output shaft of the driving motor (18), and the driving bevel gear (19) is meshed with the transmission bevel gear (13); and the wind turbine body (6) is fixedly mounted on the rotating assembly (4).

2. A load testing device for a wind turbine according to claim 1, characterized in that: The fixed bracket (3) is composed of a mounting base plate (7) and L-shaped supporting legs (8). There are a plurality of L-shaped supporting legs (8) which are symmetrically fixedly mounted on the lower end of the mounting base plate (7).

3. A load testing device for a wind turbine according to claim 2, characterized in that: The mounting substrate (7) is provided with a plurality of first fixing holes (10), the plurality of first fixing holes (10) being distributed in a ring shape, and an axial hole (9) is provided on the mounting substrate (7) and between the plurality of first fixing holes (10).

4. A load testing device for a wind turbine according to claim 3, characterized in that: The rotating plate (11) on the rotating assembly (4) is located above the mounting base plate (7), and a plurality of second fixing holes (16) are provided on the rotating plate (11), and the plurality of second fixing holes (16) are distributed in an annular shape. A plurality of roller grooves (17) are provided at the lower end of the rotating plate (11) and inside the plurality of second fixing holes (16), and the plurality of roller grooves (17) are distributed in an annular shape. The support roller (14) is rotatably mounted in the roller groove (17), and the support roller (14) contacts the upper end of the mounting base plate (7). The rotating shaft (12) is rotatably mounted in the shaft hole (9), and the transmission bevel gear (13) is located below the mounting base plate (7).

5. A load testing device for a wind turbine according to claim 4, characterized in that: The driving motor (18) on the driving assembly (5) is fixedly mounted on the lower end of the mounting base plate (7).

6. A load testing device for a wind turbine according to claim 5, characterized in that: The wind turbine main body (6) is fixedly mounted on the upper end of the rotating plate (11) via a bolt and nut assembly (15).

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