A wind turbine tower damping device

Abstract

The application discloses a wind power generator tower damping device, and relates to the technical field of damping devices.The application comprises a connecting cylinder, which is installed on a wind power generator tower; a damping piece, which is installed on the connecting cylinder and is used for consuming kinetic energy on the connecting cylinder; a connecting piece, which is installed on the connecting cylinder, and the damping piece is provided with a mounting piece, the connecting piece is detachably connected with the damping piece through the mounting piece, and the connecting piece is used for connecting the damping piece with the connecting cylinder; and an auxiliary piece, which is installed on the damping piece and is used for increasing the weight of the damping piece.The application connects the connecting cylinder with the wind power generator tower, connects the damping piece with the wind power generator tower through the connecting piece, and plays a role in damping the wind power generator tower through cooperation of the auxiliary piece.In use, the damping piece and the connecting piece are detachably connected through the mounting piece, the connecting piece and the damping piece are convenient to replace, and the practicality of the device is improved.

Description

Technical Field

[0001] This application relates to the field of vibration reduction device technology, specifically to a vibration reduction device for a wind turbine tower. Background Technology

[0002] Vibrations or swaying caused by random wind, waves, ocean currents, and imbalances in transmission components can adversely affect the safety and lifespan of wind turbine generators. This is especially true for all-steel high towers or offshore monopile foundation towers, where the generators have high power and long blades. Due to the combined effects of random wind, waves, and ocean currents, tower vibration and fatigue cannot be ignored. Therefore, dampers are installed on the towers.

[0003] Existing tower dampers connect metal balls to the tower via steel cables and damping rods. Over long-term use, the steel cables and damping rods inevitably experience metal fatigue. However, existing damping rods are connected to the steel cables and metal balls by welding, making it difficult to replace the steel cables and damping rods during inspection and maintenance, thus increasing the workload. Therefore, this application provides a wind turbine tower vibration reduction device to improve this problem. Summary of the Invention

[0004] The purpose of this application is to provide a vibration reduction device for wind turbine towers in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application specifically adopts the following technical solution:

[0006] A vibration damping device for a wind turbine tower, comprising:

[0007] Connecting cylinder, installed on the wind turbine tower;

[0008] The damping element is installed on the connecting cylinder and is used to dissipate the kinetic energy on the connecting cylinder.

[0009] A connector is mounted on a connecting cylinder. An mounting component is mounted on the damping component. The connector is detachably connected to the damping component via the mounting component. The connector is used to connect the damping component to the connecting cylinder.

[0010] Auxiliary components are installed on the damping components and are used to increase the weight of the damping components.

[0011] Furthermore, the damping element includes:

[0012] A connecting block is installed inside a connecting cylinder via a connector, and the connecting block has a receiving cavity.

[0013] A connecting ball is connected to a receiving cavity ball. A connecting column is installed on the connecting ball, and a metal ball is installed at the bottom of the connecting column. The metal ball is used to dissipate the kinetic energy on the connecting cylinder.

[0014] Furthermore, the connector includes:

[0015] There are multiple outer sleeves, which are arranged in a ring array inside the connecting cylinder along the axis of the connecting cylinder. The outer sleeves are hinged to the connecting cylinder, and a sliding cavity is provided on the outer sleeve.

[0016] The connecting rod is slidably installed in the sliding cavity and is connected to the mounting component.

[0017] The oil chamber is located on the outer sleeve. The sliding chamber is connected to the oil chamber. A connecting pipe is installed on the oil chamber to connect multiple oil chambers.

[0018] Furthermore, the mounting component includes:

[0019] Sliding plates are slidably mounted on metal balls or connecting blocks. The number of sliding plates is twice that of connecting rods, so that every two sliding plates are connected to one connecting rod.

[0020] A groove is formed on the sliding plate, and an expansion plate for insertion into the groove is installed at the end of the connecting rod;

[0021] A locking rod is slidably hinged to one of the sliding plates. A locking bolt is rotatably mounted on the locking rod. A bearing rod that is threadedly engaged with the locking bolt is also slidably hinged to the sliding plate on which the locking rod is mounted. When the locking rod is connected to the bearing rod, the sliding of the sliding plate is restricted.

[0022] Furthermore, the auxiliary component includes:

[0023] A limiting plate, which is connected to a metal ball, is used to increase the weight of the metal ball. A connecting rope is installed inside the connecting cylinder, which is used to connect the limiting plate to the connecting cylinder.

[0024] The storage cavity is located on the limiting plate and is connected to the connecting pipe.

[0025] Furthermore, an annular groove is provided inside the connecting cylinder, and a semi-annular plate is inserted into the annular groove. The connecting rope is connected to the semi-annular plate. There are two semi-annular plates, which are connected to each other by bolts.

[0026] Furthermore, a support rod is installed inside the connecting cylinder. The support rod is made of rubber and is located at the bottom of the limiting plate. When the metal ball drives the limiting plate to move inside the connecting cylinder, the support rod comes into contact with the limiting plate.

[0027] Furthermore, the metal ball has a groove, and the sliding plate is equipped with a slider that slides in cooperation with the groove.

[0028] Furthermore, a swivel is installed on the connecting rod, an extension rod is on the swivel, and a counterweight is installed at the end of the extension rod.

[0029] Furthermore, the swivel ring is rotatably engaged with the connecting rod, and the extension rod is hinged to the swivel ring.

[0030] The beneficial effects of this application are as follows:

[0031] This application connects the connecting cylinder to the wind turbine tower and the damping component to the wind turbine tower through the connecting parts. With the cooperation of auxiliary parts, it plays a role in reducing the vibration of the wind turbine tower. In use, the damping component and the connecting parts are detachably connected through the mounting parts, which facilitates the replacement of the connecting parts and the damping component and increases the practicality of the device. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of this application;

[0033] Figure 2 This is an exploded view of part of the structure of this application;

[0034] Figure 3 This is a schematic diagram of the damping component, connector, and auxiliary component of this application;

[0035] Figure 4 This is a schematic diagram of the connector structure in this application;

[0036] Figure 5 This is an exploded view of the damping component structure in this application;

[0037] Figure 6 This is an exploded view of the connector structure in this application;

[0038] Figure 7 This is an exploded view of the connecting block and connector structure of this application;

[0039] Figure 8 This application Figure 4 Three-dimensional half-section view of the middle structure;

[0040] Figure 9 This application Figure 1 Three-dimensional half-section view of the middle structure;

[0041] Figure 10 This is a schematic diagram of the structure of the connecting cylinder installed on the wind turbine tower.

[0042] Reference numerals: 1. Connecting cylinder; 2. Damping component; 201. Connecting block; 202. Receiving cavity; 203. Connecting ball; 204. Connecting column; 205. Metal ball; 3. Connecting component; 301. Outer sleeve; 302. Sliding cavity; 303. Connecting rod; 304. Oil cavity; 305. Connecting pipe; 4. Auxiliary component; 401. Limiting plate; 402. Storage cavity; 403. Connecting rope; 5. Mounting component; 501. Sliding plate; 502. Groove; 503. Expansion plate; 504. Locking rod; 505. Locking bolt; 506. Bearing rod; 6. Semi-ring plate; 7. Ring groove; 8. Support rod; 9. Slide groove; 10. Sliding block; 11. Rotary ring; 12. Extension rod; 13. Counterweight block. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0044] like Figure 1 , Figure 2 and Figure 10 As shown, one embodiment of this application discloses a wind turbine tower vibration reduction device, comprising:

[0045] Connecting cylinder 1 is installed on the wind turbine tower and is located at the end of the wind turbine tower near the upper rotor blade.

[0046] Damping component 2 is installed on connecting cylinder 1. Damping component 2 is used to dissipate the kinetic energy on connecting cylinder 1. When the wind blows the wind turbine tower, damping component 2 sets a reverse resistance for the tower through inertia, thereby reducing the kinetic energy on the tower and achieving the effect of reducing vibration.

[0047] Connector 3 is installed on connecting cylinder 1. Mounting part 5 is installed on damping part 2. Connector 3 is detachably connected to damping part 2 through mounting part 5. Connector 3 is used to connect damping part 2 and connecting cylinder 1. In use, connector 3 is connected to damping part 2 through mounting part 5. Then, by cooperating with mounting part 5, connector 3 and damping part 2 can be disassembled, thereby separating connector 3 and damping part 2, which facilitates the replacement of connector 3 and damping part 2.

[0048] Auxiliary component 4 is installed on damping component 2. Auxiliary component 4 is used to increase the weight of damping component 2. In use, by increasing the weight, the inertia of damping component 2 is further increased, thereby increasing the vibration reduction effect of the device.

[0049] Compared with the existing technology, by connecting the connecting cylinder 1 to the wind turbine tower and connecting the damping component 2 to the wind turbine tower through the connecting part 3, and with the cooperation of the auxiliary part 4, the vibration reduction of the wind turbine tower is achieved. In use, the damping component 2 and the connecting part 3 are detachably connected through the mounting part 5, which facilitates the replacement of the connecting part 3 and the damping component 2, and increases the practicality of the device.

[0050] like Figure 5 and Figure 9 As shown, in some embodiments, the damping element 2 includes:

[0051] A connecting block 201 is installed inside the connecting cylinder 1 via a connecting member 3. The connecting block 201 has a receiving cavity 202. A mounting member 5 is installed on the connecting block 201. The connecting member 3 is connected to the connecting block 201 via the mounting member 5. Figure 1 From the main viewpoint, the receiving cavity 202 is located at the bottom of the connecting block 201;

[0052] A connecting ball 203 is connected to the receiving cavity 202. A connecting column 204 is installed on the connecting ball 203, and a metal ball 205 is installed at the bottom of the connecting column 204. The metal ball 205 is used to dissipate the kinetic energy of the connecting cylinder 1. An mounting part 5 is also installed on the metal ball 205, so that it is connected to the connecting part 3 through the mounting part 5. In use, the ball connection between the connecting ball 203 and the receiving cavity 202 increases the mobility of the metal ball 205 in the connecting cylinder 1, thereby improving the responsiveness of the metal ball 205 and increasing the practicality of the device.

[0053] like Figure 4 , Figure 6 and Figure 8 As shown, in some embodiments, the connector 3 includes:

[0054] There are multiple outer sleeves 301. The outer sleeves 301 are arranged in a ring array inside the connecting sleeve 1 along the axis of the connecting sleeve 1. The outer sleeves 301 are hinged to the connecting sleeve 1. A sliding cavity 302 is provided on the outer sleeve 301 to hinge the outer sleeve 301 to the connecting sleeve 1, thereby increasing the mobility of the outer sleeve 301.

[0055] The connecting rod 303 is slidably installed in the sliding cavity 302. The connecting rod 303 is connected to the mounting part 5. The connecting rod 303 is connected to the connecting block 201 or the metal ball 205 through the mounting part 5. In use, the connecting rod 303 and the sliding cavity 302 are equipped with a spring, so that the outer sleeve 301 and the connecting rod 303 form a spring telescopic rod, which acts as a damping rod. When the metal ball 205 moves in the connecting cylinder 1 due to inertia, the kinetic energy on the metal ball 205 is consumed by the deformation of the connecting rod 303 and the spring. The metal ball 205 is used to consume the kinetic energy on the tower, further reducing the vibration on the tower, thereby increasing the vibration reduction effect of the device.

[0056] Oil chamber 304 is located on outer sleeve 301. Sliding cavity 302 is connected to oil chamber 304. Connecting pipe 305 is installed on oil chamber 304 to connect multiple oil chambers 304. Hydraulic oil is provided in oil chamber 304, so that connecting rod 303 and outer sleeve 301 form a piston cylinder structure. When one or more connecting rods 303 are compressed, the hydraulic oil in oil chamber 304 is squeezed into oil chamber 304 in outer sleeve 301 where extended connecting rod 303 is located, which increases the resistance when connecting rod 303 moves, thereby increasing the energy dissipation effect on metal ball 205 and increasing the vibration reduction effect on tower.

[0057] like Figure 4 , Figure 6 and Figure 8 As shown, in some embodiments, the mounting component 5 includes:

[0058] Sliding plates 501 are slidably mounted on metal balls 205 or connecting blocks 201. The number of sliding plates 501 is twice that of connecting rods 303, so that every two sliding plates 501 are connected to one connecting rod 303. In use, every two sliding plates 501 are used to fix one connecting rod 303. Figure 4 and Figure 8 As shown;

[0059] A groove 502 is formed on the sliding plate 501. An expansion plate 503 for inserting into the groove 502 is installed at the end of the connecting rod 303. When connecting, the connecting rod 303 is inserted into one of the grooves 502 and the sliding plate 501 is slid so that the two sliding plates 501 move closer to each other, so that the groove 502 wraps and accommodates the expansion plate 503, thus completing the initial connection of the connecting rod 303.

[0060] A locking rod 504 is slidably hinged to one of the sliding plates 501. A locking bolt 505 is rotatably mounted on the locking rod 504. A bearing rod 506, threadedly engaged with the locking bolt 505, is also slidably hinged to the sliding plate 501 on which the locking rod 504 is mounted. When the locking rod 504 and the bearing rod 506 are connected, the sliding of the sliding plate 501 is restricted. The bearing rod 506 and the locking rod 504 are located on the same sliding plate 501, both being U-shaped. The locking rod 504 and the bearing rod 506 can slide and rotate on the sliding plate 501. Their installation method on the sliding plate 501 is as follows: Figure 4 As shown, after the two sliding plates 501 are connected, the bearing rod 506 and the locking rod 504 are rotated so that the opening between them accommodates the sliding plate 501, thereby restricting the sliding of the sliding plate 501. Then, the locking rod 504 and the bearing rod 506 are connected by the locking bolt 505, which increases the stability of the sliding plate 501 during use.

[0061] When disassembly is required, the connection between the locking rod 504 and the bearing rod 506 is released by locking bolt 505. Then, the bearing rod 506 and the locking rod 504 are slid and rotated to release the restriction on the sliding plate 501. Then, the sliding plate 501 is slid to move the two away from each other, and the connecting rod 303 is disassembled. This facilitates the subsequent disassembly of the connecting rod 303 and the metal ball 205, and makes it easier to disassemble and replace the connecting rod 303 and the metal ball 205, thus increasing the practicality of the device.

[0062] like Figure 3 and Figure 9 As shown, in some embodiments, the auxiliary component 4 includes:

[0063] A limiting plate 401 is connected to the metal ball 205. The limiting plate 401 is used to increase the weight of the metal ball 205. A connecting rope 403 is installed inside the connecting cylinder 1. The connecting rope 403 is used to connect the limiting plate 401 to the connecting cylinder 1. The connecting cylinder 1 is connected to the limiting plate 401 through the connecting rope 403, which increases the mobility of the limiting plate 401, reduces the restriction of the movement of the metal ball 205 by the limiting plate 401, and increases the practicality of the device.

[0064] The storage cavity 402 is opened on the limiting plate 401 and is connected to the connecting pipe 305. The storage cavity 402 is used to store hydraulic oil. When the hydraulic oil is transported in the connecting pipe 305, the storage cavity 402 acts as a transfer station. The hydraulic oil increases the weight of the limiting plate 401, further increasing the weight of the metal ball 205, thereby increasing the vibration reduction effect of the device.

[0065] The limiting plate 401 serves two purposes: firstly, it acts as a counterweight to increase the weight of the metal ball 205, thereby enhancing its vibration damping effect; secondly, it functions as a container, acting as a hydraulic oil transfer station, thus increasing the practicality of the limiting plate 401.

[0066] like Figure 2 and Figure 9 As shown, in some embodiments, an annular groove 7 is provided inside the connecting cylinder 1, and a semi-annular plate 6 is inserted into the annular groove 7. The connecting rope 403 is connected to the semi-annular plate 6. There are two semi-annular plates 6, which are connected by bolts. The height of the annular groove 7 is greater than the height of the semi-annular plate 6. Since the connecting rope 403 can deform, when the connection between the semi-annular plates 6 is released by the bolts, the semi-annular plates 6 can slide, so that the contact between the two semi-annular plates 6 is released. Then, the semi-annular plates 6 are disconnected from the annular groove 7, which makes it easier to disconnect the limiting plate 401 from the metal ball 205, thus increasing the practicality of the device.

[0067] like Figure 2 As shown, in some embodiments, a support rod 8 is installed inside the connecting cylinder 1. The support rod 8 is made of rubber and is located at the bottom of the limiting plate 401. When the metal ball 205 drives the limiting plate 401 to move inside the connecting cylinder 1, the support rod 8 abuts against the limiting plate 401. The support rod 8 is a rubber rod. Under normal conditions, the support rod 8 supports the limiting plate 401 and the metal ball 205, reducing the wear and tear of the connecting part 3 during normal operation. When the metal ball 205 shakes, it will abut against the support rod 8, causing it to deform and dissipating the kinetic energy on the metal ball 205, thus increasing the vibration reduction effect of the device.

[0068] like Figure 4 and Figure 7 As shown, in some embodiments, a groove 9 is provided on the metal ball 205, and a slider 10 that slides in cooperation with the groove 9 is installed on the sliding plate 501. The inner wall of the groove 9 restricts the side wall of the slider 10, thereby restricting the sliding direction of the sliding plate 501 and increasing the stability of the sliding plate 501 during sliding.

[0069] like Figure 5 and Figure 7 As shown, in some embodiments, a swivel 11 is installed on the connecting rod 303, and an extension rod 12 is installed on the swivel 11. A counterweight 13 is installed at the end of the extension rod 12. The counterweight 13 increases the weight of the connecting rod 303, thereby increasing the force required to push the connecting rod 303, and thus increasing the vibration reduction effect of the device.

[0070] like Figure 5 and Figure 7As shown, in some embodiments, the rotating ring 11 is rotatably engaged with the connecting rod 303, and the extension rod 12 is hinged to the rotating ring 11. In use, when the connecting rod 303 is pushed, the counterweight 13 also swings in the connecting cylinder 1 due to inertia. Through the rotation of the rotating ring 11 and the hinge between the extension rod 12 and the counterweight 13, the mobility of the counterweight 13 is increased, thereby playing a role in protecting the connecting rod 303 from vibration and increasing the practicality of the device.

[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vibration damping device for a wind turbine tower, characterized in that, include: Connecting cylinder (1) is installed on the wind turbine tower; Damping element (2) is installed on connecting cylinder (1) and is used to dissipate the kinetic energy on connecting cylinder (1); A connector (3) is installed on a connecting cylinder (1). A mounting part (5) is installed on the damping part (2). The connector (3) is detachably connected to the damping part (2) through the mounting part (5). The connector (3) is used to connect the damping part (2) to the connecting cylinder (1). An auxiliary component (4) is installed on the damping component (2). The auxiliary component (4) is used to increase the weight of the damping component (2). The damping element (2) includes: A connecting block (201) is installed inside the connecting cylinder (1) via a connector (3), and a receiving cavity (202) is provided on the connecting block (201). A connecting ball (203) is connected to the ball of the receiving cavity (202). A connecting column (204) is installed on the connecting ball (203). A metal ball (205) is installed at the bottom of the connecting column (204). The metal ball (205) is used to consume the kinetic energy on the connecting cylinder (1). The connector (3) includes: There are multiple outer sleeves (301). The outer sleeves (301) are arranged in a ring array inside the connecting cylinder (1) along the axis of the connecting cylinder (1). The outer sleeves (301) are hinged to the connecting cylinder (1). A sliding cavity (302) is provided on the outer sleeve (301). The connecting rod (303) is slidably installed in the sliding cavity (302), and the connecting rod (303) is connected to the mounting part (5); An oil cavity (304) is formed on the outer sleeve (301). A sliding cavity (302) is connected to the oil cavity (304). A connecting pipe (305) is installed on the oil cavity (304). The connecting pipe (305) is used to connect multiple oil cavities (304). The mounting component (5) includes: Sliding plates (501) are slidably mounted on metal balls (205) or connecting blocks (201), and the number of sliding plates (501) is twice that of connecting rods (303) so that every two sliding plates (501) are connected to one connecting rod (303); A groove (502) is formed on the sliding plate (501), and an expansion plate (503) for inserting into the groove (502) is installed at the end of the connecting rod (303). A locking rod (504) is slidably hinged to one of the sliding plates (501). A locking bolt (505) is rotatably mounted on the locking rod (504). A bearing rod (506) that is threadedly engaged with the locking bolt (505) is also slidably hinged to the sliding plate (501) on which the locking rod (504) is mounted. When the locking rod (504) is connected to the bearing rod (506), the sliding of the sliding plate (501) is restricted. The auxiliary component (4) includes: A limiting plate (401) is connected to a metal ball (205). The limiting plate (401) is used to increase the weight of the metal ball (205). A connecting rope (403) is installed inside the connecting cylinder (1). The connecting rope (403) is used to connect the limiting plate (401) to the connecting cylinder (1). The storage cavity (402) is located on the limiting plate (401) and is connected to the connecting pipe (305).

2. The wind turbine tower vibration reduction device according to claim 1, characterized in that, The connecting cylinder (1) has an annular groove (7) inside, and a semi-annular plate (6) is inserted into the annular groove (7). The connecting rope (403) is connected to the semi-annular plate (6). There are two semi-annular plates (6), and they are connected by bolts.

3. The wind turbine tower vibration reduction device according to claim 2, characterized in that, A support rod (8) is installed inside the connecting cylinder (1). The support rod (8) is made of rubber and is located at the bottom of the limiting plate (401). When the metal ball (205) drives the limiting plate (401) to move inside the connecting cylinder (1), the support rod (8) and the limiting plate (401) come into contact.

4. The wind turbine tower vibration reduction device according to claim 3, characterized in that, The metal ball (205) has a groove (9) and the sliding plate (501) is equipped with a slider (10) that slides in cooperation with the groove (9).

5. The wind turbine tower vibration reduction device according to claim 4, characterized in that, A swivel (11) is installed on the connecting rod (303), and an extension rod (12) is installed on the swivel (11). A counterweight (13) is installed at the end of the extension rod (12).

6. The wind turbine tower vibration reduction device according to claim 5, characterized in that, The rotating ring (11) is rotatably engaged with the connecting rod (303), and the extension rod (12) is hinged to the rotating ring (11).

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