A wind turbine yaw system testing device

Abstract

The present application relates to the technical field of wind turbine generators, and specifically discloses a yaw system test device for a wind turbine generator set, including a main frame, a positioning ring plate is installed on the main frame, a rotating ring plate is installed on the positioning ring plate through a plane bearing, and at least one motor is fixedly installed on the rotating ring plate, the output shaft of the motor extends to the bottom of the rotating ring plate and is fixedly installed with a gear, the outer teeth of the gear are meshed with the outer teeth of the positioning ring plate, and a vibration sensor is installed on the motor, and the vibration sensor is connected to a signal acquisition station through a signal line. By setting a vibration sensor on each motor, the vibration sensor is connected to the signal acquisition station through a signal line to transmit the data of the motor to the signal acquisition station, and the data processing unit set in the signal acquisition station analyzes the data transmitted by the motor, so as to realize the rapid monitoring of the yaw system test, thereby achieving the purpose of improving the safety, efficiency and accuracy of the yaw system test.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbines, and in particular to a testing device for a yaw system of a wind turbine generator set. Background Art

[0002] The yaw system of a wind turbine is an important component to ensure its efficient and safe operation. The main function of this system is to ensure that the wind rotor is always facing the main wind direction to maximize the absorption of wind energy and improve power generation efficiency. The wind direction data is captured by the wind direction sensor, and the yaw drive device receives the control command. The motor drives the yaw bearing to rotate so that the cabin faces the wind, ensuring that the unit can operate stably and safely after completing the wind-facing action.

[0003] The existing yaw test method can detect problems with the yaw system through visual inspection by the tester, but manual observation is prone to misjudgment and omission, resulting in low accuracy of the yaw test. The yaw test requires testers to observe closely, which has poor safety due to risks of electric shock and collision. The yaw test requires testers to check the status of the yaw motors one by one, which is time-consuming and results in low efficiency. Summary of the invention

[0004] The present application proposes a wind turbine yaw system testing device, which has the advantages of low risk, high efficiency and high quality in yaw testing, and is used to solve the problem that during existing yaw testing, the yaw system has high risk, low efficiency and low quality when visually detected by testers.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a wind turbine yaw system test device, comprising a main frame, a positioning ring plate is installed on the main frame, a rotating ring plate is installed on the positioning ring plate through a plane bearing, at least one motor is fixedly installed on the rotating ring plate, the output shaft of the motor extends to the bottom of the rotating ring plate and is fixedly installed with a gear, the outer teeth of the gear are meshed with the outer teeth of the positioning ring plate, a vibration sensor is installed on the motor, and the vibration sensor is connected to a signal acquisition station via a signal line.

[0006] During the yaw test, the data of the motor is transmitted to the signal acquisition station. The data processing unit set up in the signal acquisition station analyzes the data transmitted by the motor and displays whether the data of each motor is within the specified range.

[0007] Furthermore, brake ring plates are fixedly mounted on the top and bottom of the inner edge of the rotating ring plate, and a brake located on the inner side of the rotating ring plate is provided on the main frame, and the brake is used to brake the brake ring plate.

[0008] Furthermore, a plurality of support plates are fixedly installed on the inner side of the main frame, a support ring is fixedly installed on the inner edge of the top of the support plate, an annular support plate is provided on the outer edge of the top of the support ring, the brake is fixedly installed on the annular support plate, a convex plate is fixedly connected to the inner side of the support ring, and a brake correction device is fixedly installed on the bottom of the convex plate.

[0009] Furthermore, the number of the support plates is not less than two, and a plurality of support plates are distributed in a circular array on the inner side of the main frame, and the outer edge of the support ring is connected to the annular support plate via a plane bearing.

[0010] Furthermore, the number of the brakes is not less than two, and a plurality of brakes are distributed in a circular array on the annular support plate, and the number of the convex plates is the same as the number of the brakes.

[0011] Furthermore, the brake correction device includes a tube body fixedly installed at the bottom of the convex plate, a partition is fixedly installed in the middle of the inner cavity of the tube body, an upper piston located above the partition is movably mounted inside the tube body, a pull rope is connected to the top of the upper piston, the top of the pull rope passes through the convex plate and is fixedly connected to the corresponding brake, a U-shaped connecting piece is fixedly installed at the bottom of the upper piston, a linkage shaft is fixedly connected to the middle of the bottom end of the U-shaped connecting piece, the bottom end of the linkage shaft extends to the bottom of the partition and is movably mounted with a lower piston, the outer side of the lower piston is movably sleeved and sealed with the inner wall of the tube body, and a spring movably mounted on the outer side of the linkage shaft is provided between the lower piston and the partition.

[0012] Furthermore, the drawstring is a soft rope, and the drawstring is made of a smooth material with high tensile strength.

[0013] Furthermore, a smooth chamfer is provided at the contact portion between the top of the convex plate and the draw cord.

[0014] Furthermore, one side of the tube body is connected with an oil guide pipe, and the oil guide pipe is communicated with the chamber below the partition in the tube body.

[0015] Furthermore, the vibration sensor is adsorbed on the motor through a magnet.

[0016] Beneficial effects of the present invention:

[0017] 1. The present application provides a wind turbine generator set yaw system test device, which arranges a vibration sensor on each motor. The vibration sensor is connected to a signal acquisition station through a signal line to transmit the data of the motor to the signal acquisition station. The data processing unit arranged in the signal acquisition station analyzes the data transmitted by the motor and displays whether the data of each motor is within a specified range. During the yaw test, when a motor has an abnormality, it can be detected in time, thereby realizing rapid monitoring of the yaw system test, thereby achieving the purpose of improving the safety, efficiency and accuracy of the yaw system test. At the same time, there is no need for personnel to observe and judge at a close distance, which reduces the time required for the yaw test, improves the safety of the test, and realizes that the yaw test can be completed with low risk, high efficiency and high quality.

[0018] 2. The present application provides a wind turbine yaw system test device, which can continue to move with the inertia of the rotating ring plate and the brake ring plate during braking through the brake, and utilizes a brake correction device arranged below the brake in the pre-braking state. During braking, the spring in the brake correction device is used to provide buffering, thereby effectively protecting the equipment of the yaw system. At the same time, the brake, the rotating ring plate and the brake ring plate are pulled by the pull rope in the brake correction device to reset and move after braking, so that the rotating ring plate and the brake ring plate move to the position at the time of initial braking, thereby improving the accuracy of yaw braking, and, by using an oil guide pipe to inject oil and pressurize the pipe body, it is tested whether the rotating ring plate and the brake ring plate after long-term use can be completely reset after the braking is completed, thereby further improving the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0020] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 A top view of

[0023] Figure 3 This is a schematic diagram of the signal line connection between the vibration sensor and the signal acquisition station in Example 1;

[0024] Figure 4 for Figure 1 A schematic diagram of the local enlarged structure at aa;

[0025] Figure 5 for Figure 4 Schematic diagram of the structure of the brake correction device.

[0026] In the figure:

[0027] 1. Main frame; 2. Positioning ring plate; 3. Rotating ring plate; 4. Motor; 5. Gear; 6. Vibration sensor; 7. Signal acquisition station; 8. Brake ring plate; 9. Support plate; 10. Support ring; 11. Annular support plate; 12. Brake; 13. Convex plate; 14. Brake correction device; 141. Tube body; 142. Partition; 143. Upper piston; 144. Pull rope; 145. U-shaped connector; 146. Linkage shaft; 147. Lower piston; 148. Spring; 149. Oil guide pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] For example, see Figure 1-Figure 3 A wind turbine yaw system test device comprises a main frame 1, a positioning ring plate 2 is fixedly mounted on the main frame 1, a rotatable rotating ring plate 3 is mounted on the positioning ring plate 2 through a plane bearing, a nacelle of the wind turbine (not shown) is fixedly mounted on the rotating ring plate 3, at least one motor 4 is fixedly mounted on the rotating ring plate 3, an output shaft of the motor 4 extends to the bottom of the rotating ring plate 3 and a gear 5 is fixedly mounted thereon, the outer teeth of the gear 5 mesh with the outer teeth of the positioning ring plate 2, when the yaw of the nacelle of the wind turbine is controlled, the gear 5 is driven to rotate by the motor 4, and the meshing action of the gear 5 and the positioning ring plate 2 is utilized to make the rotating ring plate 3 drive the nacelle thereon to rotate.

[0030] A vibration sensor 6 is installed on the motor 4, and the vibration sensor 6 can be adsorbed on the motor 4 by a magnet. The vibration sensor 6 is used to detect the state of the motor. The vibration sensor 6 is connected to the signal acquisition station 7 through a signal line to transmit the data of the motor 4 to the signal acquisition station 7. The data processing unit arranged in the signal acquisition station 7 analyzes the data transmitted by the motor 4 and displays whether the data of each motor 4 is within the specified range. During the yaw test, when a motor has an abnormality, it can be detected in time, thereby realizing rapid monitoring of the yaw system test, thereby achieving the purpose of improving the safety, efficiency and accuracy of the yaw system test. At the same time, there is no need for personnel to observe and judge at a close distance, which reduces the time required for the yaw test, improves the safety of the test, and realizes that the yaw test can be completed with low risk, high efficiency and high quality.

[0031] For example 2, please refer to Figure 1-Figure 2 , Figure 4-Figure 5 On the basis of the first embodiment, a brake ring plate 8 is fixedly installed on the top and bottom of the inner edge of the rotating ring plate 3, a plurality of support plates 9 are fixedly installed on the inner side of the main frame 1, the number of the support plates 9 is not less than two, and the plurality of support plates 9 are distributed in a circular array on the inner side of the main frame 1, a support ring 10 is fixedly installed on the inner edge of the top of the support plate 9, a rotatable annular support plate 11 is installed on the outer edge of the top of the support ring 10 through a plane bearing, a plurality of brakes 12 are fixedly installed on the top of the annular support plate 11, the number of the brakes 12 is not less than two, and the plurality of brakes 12 are distributed in a circular array on the annular support plate 11, the brake 12 is used to perform friction braking on the brake ring plate 8, so that after the motor 4 drives the rotating ring plate 3 to drive the cabin to rotate to the corresponding position by yaw, the brake 12 is used to brake the brake ring plate 8, so that the cabin can be stably fixed to the position after yaw.

[0032] The inner side of the support ring 10 is fixedly connected with the same number of protrusions 13 as the brakes 12. The protrusions 13 and the support ring 10 are integrally formed and initially located directly below the brakes 12. A brake correction device 14 is fixedly installed at the bottom of the protrusions 13.

[0033] The brake correction device 14 includes a tube body 141 fixedly mounted at the bottom of the convex plate 13, a partition 142 is fixedly mounted in the middle of the inner cavity of the tube body 141, an upper piston 143 is movably mounted inside the tube body 141 and is located above the partition 142, a pull rope 144 is connected to the top of the upper piston 143, the pull rope 144 is a soft rope, and the pull rope 144 is made of a smooth material with high tensile strength, the top of the pull rope 144 passes through the convex plate 13 and is fixedly connected to the corresponding brake 12, and the top of the convex plate 13 is connected to the pull rope 144. The contact part is provided with a smooth chamfer to reduce the wear and tear of the pull rope 144. A U-shaped connector 145 is fixedly installed at the bottom of the upper piston 143. A linkage shaft 146 is fixedly connected to the middle of the bottom end of the U-shaped connector 145. The bottom end of the linkage shaft 146 extends to the bottom of the partition 142 and is movably mounted on the lower piston 147. The outer side of the lower piston 147 is movably mounted on the inner wall of the tube body 141 and is sealed. A spring 148 is movably mounted on the outer side of the linkage shaft 146 between the lower piston 147 and the partition 142.

[0034] By means of the setting of the spring 148, the lower piston 147 always keeps the tendency of driving the linkage shaft 146, the U-shaped connecting piece 145 and the pull rope 144 to move downward, so that before the brake 12 is braked, the pull rope 144 is used to pull the brake 12 to move to the top of the brake correction device 14. When the brake 12 contacts the brake ring plate 8 for braking, under the inertia of the rotation of the brake ring plate 8 and the rotating ring plate 3, the brake 12 immediately rotates with the brake ring plate 8. At this time, the pull rope 144 will pull the U-shaped connecting piece 145, the linkage shaft 146 and the lower piston 147 upward, and the spring 148 will pull the U-shaped connecting piece 145, the linkage shaft 146 and the lower piston 147 upward. The spring 148 acts as a buffer until the brake ring plate 8 and the rotating ring plate 3 stop. The restoring force of the spring 148 pushes the lower piston 147 downward, and then the pull rope 144 is used to pull the brake 12, the brake ring plate 8 and the rotating ring plate 3 to rotate in the opposite direction as a whole until the brake 12 moves back to the top of the brake correction device 14, that is, the position of the brake 12 when it is initially braked, thereby re-correcting the inertial rotation distance of the brake ring plate 8 and the rotating ring plate 3 after braking, thereby improving the accuracy of the yaw system and avoiding the inertial effect of immediate braking, which may easily lead to failure of the motor 4.

[0035] One side of the tube body 141 is connected to an oil guide pipe 149, which is connected to the chamber below the partition 142 in the tube body 141, and the other end of the oil guide pipe 149 is connected to an oil pump (not shown in the figure). The start and stop control of the oil pump is connected to the signal acquisition station 7 through a signal line, so that the oil injection and pressurization into the tube body 141 through the oil guide pipe 149 can be remotely controlled. With the long-term continuous use of the wind turbine, the spring 148 will inevitably have elastic fatigue. During the yaw test, that is, after a yaw braking is completed, the oil guide pipe 149 is used to inject oil and pressurize the tube body 141. If the elastic force of the spring 148 can still make the brake 12 reset to move to just above the convex plate 13 after braking, the spring 148 can be properly It is often used and does not need to be replaced. When the elastic force of the spring 148 cannot reset the brake 12 to be directly above the convex plate 13 after braking, after oil is injected into the tube body 141 for pressurization, the lower piston 147 will continue to move downward until the brake 12 moves to be directly above the convex plate 13. At this time, it can be determined that the spring 148 can no longer be used and needs to be replaced. In the continued schematic stage of the wind turbine before replacement, after the yaw action of the wind turbine, the reset after yaw braking is provided by injecting oil and pressurizing the tube body 141, so that the wind turbine can accurately control the yaw angle in the preparation stage of replacing the spring 148, reduce the deviation between the wind wheel axis and the wind direction, and help to increase the service life of the wind turbine.

Claims

1. A yaw system test device for a wind turbine generator set, comprising a main frame (1), a positioning ring plate (2) being mounted on the main frame (1), a rotating ring plate (3) being mounted on the positioning ring plate (2) via a plane bearing, at least one motor (4) being fixedly mounted on the rotating ring plate (3), an output shaft of the motor (4) extending below the rotating ring plate (3) and fixedly mounted with a gear (5), the outer teeth of the gear (5) being meshed with the outer teeth of the positioning ring plate (2), characterized in that: The motor (4) is equipped with a vibration sensor (6), and the vibration sensor (6) is connected to a signal collection station (7) via a signal line; A brake ring plate (8) is fixedly mounted on the top and bottom of the inner edge of the rotating ring plate (3); a brake (12) is provided on the main frame (1) and is located on the inner side of the rotating ring plate (3); the brake (12) is used to brake the brake ring plate (8); A plurality of support plates (9) are fixedly mounted on the inner side of the main frame (1); a support ring (10) is fixedly mounted on the inner edge of the top of the support plate (9); an annular support plate (11) is provided on the outer edge of the top of the support ring (10); a brake (12) is fixedly mounted on the annular support plate (11); a convex plate (13) is fixedly connected to the inner side of the support ring (10); and a brake correction device (14) is fixedly mounted on the bottom of the convex plate (13); The brake correction device (14) comprises a tube body (141) fixedly mounted at the bottom of the convex plate (13), a partition plate (142) fixedly mounted in the middle of the inner cavity of the tube body (141), an upper piston (143) located above the partition plate (142) is movably sleeved inside the tube body (141), a pull rope (144) is connected to the top of the upper piston (143), the top end of the pull rope (144) passes through the convex plate (13) and is fixedly connected to the corresponding brake (12), and the upper piston (143) is movable sleeved inside the tube body (141) and is located above the partition plate (142). ) is fixedly mounted at the bottom of the tube body (141), a linkage shaft (146) is fixedly connected to the middle of the bottom end of the U-shaped connection member (145), the bottom end of the linkage shaft (146) extends to the bottom of the partition (142) and is movably sleeved with a lower piston (147), the outer side of the lower piston (147) is movably sleeved with the inner wall of the tube body (141) and is tightly fitted, and a spring (148) movably sleeved on the outer side of the linkage shaft (146) is provided between the lower piston (147) and the partition (142); During the yaw test, data from the motor (4) is transmitted to the signal acquisition station (7), and a data processing unit provided in the signal acquisition station (7) analyzes the data transmitted from the motor (4) and displays whether the data of each motor (4) is within a specified range.

2. The wind turbine yaw system testing device according to claim 1, characterized in that: The number of the support plates (9) is not less than two, and the plurality of support plates (9) are distributed in a circular array on the inner side of the main frame (1), and the outer edge of the support ring (10) is connected to the annular support plate (11) via a plane bearing.

3. The wind turbine yaw system testing device according to claim 1, characterized in that: The number of the brakes (12) is not less than two, and the brakes (12) are distributed in a circular array on the annular support plate (11), and the number of the convex plates (13) is the same as the number of the brakes (12).

4. The wind turbine yaw system testing device according to claim 1, characterized in that: The pull rope (144) is a soft rope, and the pull rope (144) is made of a smooth material with high tensile strength.

5. The wind turbine yaw system testing device according to claim 1, characterized in that: A smooth chamfer is provided at the contact portion between the top of the convex plate (13) and the pull rope (144).

6. The wind turbine yaw system testing device according to claim 1, characterized in that: One side of the tube body (141) is connected to an oil guide tube (149), and the oil guide tube (149) is in communication with a chamber below a partition plate (142) in the tube body (141).

7. The wind turbine yaw system testing device according to claim 1, characterized in that: The vibration sensor (6) is adsorbed on the motor (4) via a magnet.

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