Torque test bench for vertical-axis wind turbine

Abstract

The invention relates to the technical field of wind power generation equipment detection, in particular to a vertical axis wind power generator torque test board which comprises a test board body, anti-torque test mechanisms, a positioning simulation wind power mechanism and a bottom stabilizing mechanism, and the anti-torque test mechanisms are connected to the two sides of the test board body in a threaded mode. The torsion resistance testing mechanism comprises supporting columns which are in threaded connection with the two sides of the testing table. According to the invention, through the arrangement of the lifting slide block, the electric telescopic column and the clamping plate, the height of the lifting slide block can be flexibly adjusted in the lifting slide groove of the supporting column, the electric telescopic column can realize the accurate displacement of the anti-torque sensor in the horizontal direction, and the cooperation of the lifting slide block and the electric telescopic column can make the anti-torque testing mechanism adapt to vertical axis wind turbines of different specifications and sizes. The test range is greatly expanded, the clamping plate can stably clamp the rotating shafts of the wind driven generators with different diameters through the adjustment of the adjuster, the rotating shafts are prevented from shaking in the test process, and the accuracy and reliability of test data are ensured.

Description

Technical Field

[0001] This invention relates to the field of wind power equipment testing technology, and in particular to a torque test bench for vertical axis wind turbines. Background Technology

[0002] Vertical axis wind turbines offer significant advantages in certain scenarios due to their unique structure and operating characteristics, such as insensitivity to wind direction changes and low noise. However, accurate torque measurement is crucial in the research, development, production, and quality testing of vertical axis wind turbines. Torque, as a key parameter reflecting wind turbine performance, directly affects the generator's output power, stability, and reliability.

[0003] When existing technical solutions are used,

[0004] (1) The testing device has limited adjustment functions, making it difficult to adapt to vertical axis wind turbines of different specifications and sizes. It cannot flexibly adjust the test position and angle, resulting in a narrow test range and poor versatility. It is also difficult to accurately and stably fix the rotating shaft of wind turbines of different sizes, which can easily lead to shaking.

[0005] (2) The simulation of wind power is not accurate enough and cannot truly reproduce the actual wind environment. This results in a large deviation between the torque data obtained from the test and the actual operating conditions, affecting the accurate evaluation of the wind turbine performance. The test device is not stable enough and is easily affected by vibration during the test. This will not only affect the test accuracy, but long-term use may also lead to equipment damage, increasing maintenance costs and downtime.

[0006] To address the above problems, the present invention provides a vertical axis wind turbine torque test bench. Summary of the Invention

[0007] The purpose of this invention is to solve the problems of inconvenient adjustment, inaccurate wind force simulation, and poor stability in the existing technology, and to propose a vertical axis wind turbine torque test bench.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a vertical axis wind turbine torque test bench, comprising a test bench, an anti-torsion test mechanism, a positioning simulation wind mechanism, and a bottom stabilization mechanism, wherein the anti-torsion test mechanism is threadedly connected to both sides of the test bench, and the anti-torsion test mechanism includes support columns threadedly connected to both sides of the test bench, wherein the support columns are symmetrically arranged on both sides of the test bench.

[0009] The torsional resistance testing mechanism includes a lifting slider and an electric telescopic column, with the electric telescopic column fixedly connected to the outer surface of the lifting slider.

[0010] The support column has lifting grooves on both sides, and the lifting slider is slidably connected to the outer surface of the support column through the lifting grooves. The far end of the electric telescopic column is fixedly connected to a connecting component, and the outer surface of the connecting component is fixedly connected to an anti-torsion sensor. The anti-torsion sensor and the electric telescopic column are symmetrically arranged on both sides of the test platform.

[0011] Furthermore, the connecting assembly includes a connecting plate fixedly connected to one end of the electric telescopic column, with connecting parts threaded to both sides of the connecting plate, the anti-torsion sensor being threadedly connected to the outer surface of the connecting plate through the connecting parts, and two ends of the electric telescopic column being fixedly connected to the outer surface of the lifting slider.

[0012] Furthermore, the torsional testing mechanism includes threaded holes evenly spaced on the outer surface of the support column, and the outer surface of the lifting slider is threaded with an adjusting bolt, which is threaded to the outer surface of the support column via the adjusting bolt.

[0013] Furthermore, the positioning simulation wind mechanism includes a fixed base threaded to the top of the test bench, a wind turbine rotating shaft is snapped into the inside of the fixed base, a rotating blade is rotatably connected to the top of the wind turbine rotating shaft, and limiters are threaded to both sides of the fixed base, and the fixed base is threaded to the top of the test bench through the limiters.

[0014] Furthermore, the fixed base is threaded with adjusters on both sides, and the far end of the adjuster is rotatably connected to a bearing. The bearing is rotatably connected to a clamping plate. The clamping plate and the adjuster are symmetrically arranged inside the fixed base. The wind turbine shaft is clamped and connected to the inside of the fixed base through the clamping plate.

[0015] Furthermore, the positioning simulation wind mechanism includes a servo motor fixedly connected to the top of the support column. The output end of the servo motor is fixedly connected to a rotating connecting shaft. A rotating belt is rotatably connected to the outer surface of the rotating connecting shaft. The other end of the rotating belt is rotatably connected to the outer surface of the rotating blade. The rotating blade rotates synchronously with the rotating connecting shaft through the rotating belt.

[0016] Furthermore, the bottom stabilization mechanism includes a support base plate fixedly connected to the bottom of the test platform, shock-absorbing columns fixedly connected to the four corners of the bottom of the support base plate, and anti-slip pads fixedly connected to the bottom of the shock-absorbing columns.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0018] 1. In this invention, by setting up a lifting slider, an electric telescopic column, and a clamping plate, the lifting slider can flexibly adjust its height within the lifting groove of the support column, and the electric telescopic column can achieve precise horizontal displacement of the anti-torsion sensor. The combination of the two allows the anti-torsion testing mechanism to adapt to vertical axis wind turbines of different specifications and sizes, greatly expanding the testing range. The clamping plate, through adjustment by the regulator, can stably clamp the rotating shaft of wind turbines of different diameters, avoiding shaking of the rotating shaft during the test, ensuring the accuracy and reliability of the test data, and solving the problems of inconvenient adjustment and poor versatility of the testing device.

[0019] 2. In this invention, by setting up a rotating connecting shaft, a rotating belt, and a shock-absorbing column, the rotating connecting shaft is connected to a servo motor, and the rotating belt stably transmits the power of the servo motor to the rotating blades. The servo motor can precisely control the speed, simulate various wind speed environments, and make the torque data obtained from the test closer to the actual operating conditions, thereby improving the accuracy of the test results. The shock-absorbing column can effectively absorb the vibration generated during the test, reduce the impact of vibration on the test accuracy, protect the equipment components, extend the service life of the test bench, and reduce maintenance costs, thus solving the problems of inaccurate wind force simulation and poor stability in the prior art. Attached Figure Description

[0020] Figure 1 A three-dimensional structural schematic diagram of a vertical axis wind turbine torque test bench is provided for this invention;

[0021] Figure 2 This invention provides a schematic diagram of the structure of the clamping plate in a vertical axis wind turbine torque testing bench;

[0022] Figure 3 This invention proposes a torque testing bench for vertical axis wind turbine generators. Figure 2 Enlarged view of point A;

[0023] Figure 4 This invention presents a schematic diagram of the structure of an anti-torsion sensor in a vertical axis wind turbine torque testing bench;

[0024] Figure 5 This invention provides a schematic diagram of the structure of a rotating belt in a vertical axis wind turbine torque testing bench;

[0025] Figure 6 This invention proposes a torque testing bench for vertical axis wind turbine generators. Figure 5 Enlarged diagram of point B.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Test bench; 2. Torsional testing mechanism; 21. Support column; 22. Lifting slider; 23. Electric telescopic column; 24. Lifting slide; 25. Connecting assembly; 251. Connecting plate; 252. Connector; 26. Torsional sensor; 27. Threaded hole; 28. Adjusting bolt; 3. Positioning simulation wind mechanism; 31. Fixed base; 32. Wind turbine rotating shaft; 33. Rotating blade; 34. Limiting component; 35. Adjuster; 36. Bearing; 37. Clamping plate; 38. Servo motor; 39. Rotating connecting shaft; 310. Rotating belt; 4. Bottom stabilization mechanism; 41. Support base plate; 42. Shock-absorbing column; 43. Anti-slip pad. Detailed Implementation

[0028] Please see Figure 1-6 The present invention provides a technical solution: a vertical axis wind turbine torque test bench, including a test bench 1, an anti-torsion test mechanism 2, a positioning simulation wind mechanism 3 and a bottom stabilization mechanism 4. The anti-torsion test mechanism 2 is threadedly connected to both sides of the test bench 1. The anti-torsion test mechanism 2 includes support columns 21 threadedly connected to both sides of the test bench 1. The support columns 21 are symmetrically arranged on both sides of the test bench 1.

[0029] The following section will explain the specific setup and function of its torsion test mechanism 2, positioning simulation wind mechanism 3, and bottom stabilization mechanism 4.

[0030] In this embodiment, the torsional testing mechanism 2 includes a lifting slider 22 and an electric telescopic column 23, with the electric telescopic column 23 fixedly connected to the outer surface of the lifting slider 22.

[0031] The support column 21 has lifting grooves 24 on both sides. The lifting slider 22 is slidably connected to the outer surface of the support column 21 through the lifting grooves 24. The far end of the electric telescopic column 23 is fixedly connected to the connecting component 25. The outer surface of the connecting component 25 is fixedly connected to the anti-torsion sensor 26. The anti-torsion sensor 26 and the electric telescopic column 23 are symmetrically arranged on both sides of the test bench 1.

[0032] The effects achieved by the above components are as follows: through the cooperation of the lifting slider 22 and the adjusting bolt 28, the height of the anti-torsion testing mechanism 2 can be flexibly adjusted, and the electric telescopic column 23 can accurately adjust the horizontal position of the anti-torsion sensor 26. The two work together to enable the anti-torsion testing mechanism 2 to adapt to vertical axis wind turbines of different specifications and sizes, greatly expanding the testing range, and ensuring that the anti-torsion sensor 26 can accurately measure the torque of the wind turbine rotating shaft 32 at different positions, thereby improving the accuracy and reliability of the test data.

[0033] Specifically, the connecting assembly 25 includes a connecting plate 251 fixedly connected to one end of the electric telescopic column 23, and connecting pieces 252 threadedly connected to both sides of the connecting plate 251. The anti-torsion sensor 26 is threadedly connected to the outer surface of the connecting plate 251 through the connecting pieces 252, and the two ends of the electric telescopic column 23 are fixedly connected to the outer surface of the lifting slider 22.

[0034] The effect achieved by the above components is that the connecting plate 251 securely mounts the anti-torsion sensor 26 on its outer surface through the connector 252, maintaining the stability of the anti-torsion sensor 26 during use and improving the accuracy of the detection data.

[0035] Specifically, the torsion test mechanism 2 includes threaded holes 27 evenly spaced on the outer surface of the support column 21, and an adjusting bolt 28 is threadedly connected to the outer surface of the lifting slider 22. The lifting slider 22 is threadedly connected to the outer surface of the support column 21 through the adjusting bolt 28.

[0036] The effect achieved by the above components is as follows: the lifting slider 22 is slidably connected to the support column 21 through the lifting slide groove 24, and the adjusting bolt 28 with the threaded connection on the outer surface can cooperate with the threaded hole 27 on the outer surface of the support column 21. When the adjusting bolt 28 is loosened, the lifting slider 22 can slide freely up and down in the lifting slide groove 24. After adjusting to a suitable height, tightening the adjusting bolt 28 can fix the lifting slider 22 firmly, thereby realizing the height adjustment of the anti-torsion testing mechanism 2 in the vertical direction.

[0037] Specifically, the positioning simulation wind mechanism 3 includes a fixed base 31 threadedly connected to the top of the test bench 1. A wind turbine rotating shaft 32 is snapped into the inside of the fixed base 31. A rotating blade 33 is rotatably connected to the top of the wind turbine rotating shaft 32. Limiting members 34 are threadedly connected to both sides of the fixed base 31. The fixed base 31 is threadedly connected to the top of the test bench 1 through the limiting members 34.

[0038] The effect achieved by the above components is that the fixed base 31 and the limiting member 34 ensure the stable installation of the entire simulated wind structure, and the limiting members 34 on both sides firmly install the fixed base 31 on the test bench 1 to prevent displacement during the test.

[0039] Specifically, the two sides of the fixed base 31 are threaded with adjusters 35, the far end of the adjuster 35 is rotatably connected to a bearing 36, and the inside of the bearing 36 is rotatably connected to a clamping plate 37. The clamping plate 37 and the adjuster 35 are symmetrically arranged inside the fixed base 31. The wind turbine rotating shaft 32 is clamped and connected to the inside of the fixed base 31 through the clamping plate 37.

[0040] The effect achieved by the above components is as follows: the clamping system composed of the adjuster 35, bearing 36 and clamping plate 37 can be adapted to wind turbine rotating shafts 32 of different diameters to achieve precise positioning and fixation. The rubber clamping surface of the clamping plate 37 has anti-slip texture, which can increase friction to prevent the rotating shaft from sliding and avoid damage to the rotating shaft surface.

[0041] Specifically, the positioning simulation wind mechanism 3 includes a servo motor 38 fixedly connected to the top of the support column 21. The output end of the servo motor 38 is fixedly connected to a rotating connecting shaft 39. A rotating belt 310 is rotatably connected to the outer surface of the rotating connecting shaft 39. The other end of the rotating belt 310 is rotatably connected to the outer surface of the rotating blade 33. The rotating blade 33 rotates synchronously with the rotating connecting shaft 39 through the rotating belt 310.

[0042] The effect achieved by the above components is that the cooperation of the servo motor 38, the rotating connecting shaft 39 and the rotating belt 310 can accurately simulate various wind speed environments by programming and setting different speed curves according to the actual wind conditions, so that the torque data obtained by the test is closer to the actual operating conditions and the accuracy of the test results is improved.

[0043] Specifically, the bottom stabilization mechanism 4 includes a support base plate 41 fixedly connected to the bottom of the test bench 1, shock-absorbing columns 42 fixedly connected to the four corners of the bottom of the support base plate 41, and anti-slip pads 43 fixedly connected to the bottom of the shock-absorbing columns 42.

[0044] The effects achieved by the above components are as follows: the support base plate 41 provides stable foundation support; the shock-absorbing column 42 effectively reduces vibration interference during the test process, reduces the impact of vibration on test accuracy, protects equipment components, and extends the service life of the test bench 1; and the anti-slip pad 43 ensures that the test bench 1 can be placed stably in various ground environments, improving the safety and stability of the test bench 1 during use.

[0045] Working principle: When using the vertical axis wind turbine torque test bench 1, first place the rotating shaft of the vertical axis wind turbine to be tested in the fixed base 31. By rotating the adjuster 35, the clamping plate 37 is moved to firmly clamp the rotating shaft. The fixed base 31 is firmly installed on the top of the test bench 1 by the limiting member 34.

[0046] Based on the height of the wind turbine, loosen the adjusting bolt 28 on the lifting slider 22 in the anti-torsion test mechanism 2, slide the lifting slider 22 up and down in the lifting slide groove 24 to adjust it to a suitable height, and then tighten the adjusting bolt 28. Then, use the electric telescopic column 23 to precisely adjust the horizontal position of the anti-torsion sensor 26 so that the anti-torsion sensor 26 is accurately connected to the rotating shaft 32 of the wind turbine.

[0047] The servo motor 38 is started. The servo motor 38 drives the rotating blade 33 to rotate through the rotating connecting shaft 39 and the rotating belt 310 to simulate different wind speed environments. During the rotation, the torque generated by the rotating shaft 32 of the wind turbine is transmitted to the anti-torsion sensor 26. The anti-torsion sensor 26 converts the torque into an electrical signal output based on the strain effect.

[0048] Throughout the test, the shock-absorbing column 42 of the bottom stabilizing mechanism 4 continuously absorbs the vibration generated by the operation of the equipment, reducing the impact of vibration on the test accuracy. The anti-slip pad 43 ensures that the test platform 1 is stable and does not slide. The test personnel receive the signal output by the anti-torsion sensor 26 through the data acquisition system. After processing and analysis, the torque data of the vertical axis wind turbine under different simulated wind speed conditions can be obtained, and the test evaluation of the torque performance of the wind turbine can be completed.

Claims

1. A torque test bench for a vertical axis wind turbine generator, comprising a test bench (1), a torsional testing mechanism (2), a positioning simulation wind mechanism (3), and a bottom stabilization mechanism (4), characterized in that: The torsion testing mechanism (2) is threaded to both sides of the test bench (1). The torsion testing mechanism (2) includes support columns (21) threaded to both sides of the test bench (1). The support columns (21) are symmetrically arranged on both sides of the test bench (1). The torsion test mechanism (2) includes a lifting slider (22) and an electric telescopic column (23), wherein the electric telescopic column (23) is fixedly connected to the outer surface of the lifting slider (22); The support column (21) has lifting grooves (24) on both sides. The lifting slider (22) is slidably connected to the outer surface of the support column (21) through the lifting grooves (24). The far end of the electric telescopic column (23) is fixedly connected to a connecting component (25). The outer surface of the connecting component (25) is fixedly connected to an anti-torsion sensor (26). The anti-torsion sensor (26) and the electric telescopic column (23) are symmetrically arranged on both sides of the test bench (1).

2. The vertical axis wind turbine torque test bench according to claim 1, characterized in that: The connecting assembly (25) includes a connecting plate (251) fixedly connected to one end of the electric telescopic column (23), and connecting pieces (252) are threadedly connected to both sides of the connecting plate (251). The anti-torsion sensor (26) is threadedly connected to the outer surface of the connecting plate (251) through the connecting pieces (252). Two sections of the electric telescopic column (23) are fixedly connected to the outer surface of the lifting slider (22).

3. The vertical axis wind turbine torque test bench according to claim 1, characterized in that: The torsional testing mechanism (2) includes threaded holes (27) evenly spaced on the outer surface of the support column (21). The outer surface of the lifting slider (22) is threaded with an adjusting bolt (28). The lifting slider (22) is threaded to the outer surface of the support column (21) through the adjusting bolt (28).

4. The vertical axis wind turbine torque test bench according to claim 1, characterized in that: The positioning simulation wind mechanism (3) includes a fixed base (31) threaded to the top of the test bench (1). A wind turbine rotating shaft (32) is snapped into the inside of the fixed base (31). A rotating blade (33) is rotatably connected to the top of the wind turbine rotating shaft (32). Limiting members (34) are threaded to both sides of the fixed base (31). The fixed base (31) is threaded to the top of the test bench (1) through the limiting members (34).

5. A vertical axis wind turbine torque test bench according to claim 4, characterized in that: The fixed base (31) is threaded with adjusters (35) on both sides. The far end of the adjuster (35) is rotatably connected to a bearing (36). The bearing (36) is rotatably connected to a clamping plate (37). The clamping plate (37) and the adjuster (35) are symmetrically arranged inside the fixed base (31). The wind turbine rotating shaft (32) is clamped and connected to the inside of the fixed base (31) through the clamping plate (37).

6. A vertical axis wind turbine torque test bench according to claim 5, characterized in that: The positioning simulation wind mechanism (3) includes a servo motor (38) fixedly connected to the top of the support column (21). The output end of the servo motor (38) is fixedly connected to a rotating connecting shaft (39). A rotating belt (310) is rotatably connected to the outer surface of the rotating connecting shaft (39). The other end of the rotating belt (310) is rotatably connected to the outer surface of the rotating blade (33). The rotating blade (33) rotates synchronously with the rotating connecting shaft (39) through the rotating belt (310).

7. A vertical axis wind turbine torque testing bench according to claim 1, characterized in that: The bottom stabilizing mechanism (4) includes a support base plate (41) fixedly connected to the bottom of the test bench (1), and shock-absorbing columns (42) are fixedly connected to the four corners of the bottom of the support base plate (41), and anti-slip pads (43) are fixedly connected to the bottom of the shock-absorbing columns (42).

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