Tuned liquid damper of wind driven generator

Abstract

The utility model relates to the technical field of dampers, in particular to a tuned liquid damper of a wind driven generator, which comprises a plurality of support frames arranged in the circumferential direction of the inner side wall of a tower drum of the wind driven generator, and at least two limiting rods are arranged on the support frames at intervals; the axial direction of the limiting rods is parallel to the axial direction of the tower drum of the wind driven generator, the tuned liquid damper of the wind driven generator is clamped between the limiting rods on the two adjacent supporting frames, and the tuned liquid damper is designed to be a flat cylinder, so that the tuned liquid damper can adapt to installation in a limited space in the tower drum of the wind driven generator; and a latticed grid is arranged in the water tank, and a plurality of dampers are arranged in the tower drum in the circumferential direction, so that the damping effect is improved.

Description

Technical Field

[0001] This application relates to the field of damper technology, and more particularly to a tuned liquid damper for a wind turbine. Background Technology

[0002] Vibration has a multifaceted impact on wind turbines, primarily affecting mechanical fatigue, safe operation, operating efficiency, and maintenance costs. Under prolonged vibration, critical components of wind turbines, such as blades, towers, and rotors, are prone to fatigue cracks and structural damage. The stability of the tower, as the support structure of the wind turbine, is particularly crucial.

[0003] Tunable liquid dampers (TLDs) are commonly used for vibration reduction within wind turbine towers. A TLD typically consists of a closed container filled with liquid; the mass of the liquid and the geometry of the container are designed to tune to a specific vibration frequency. In recent years, wind turbines have evolved towards greater flexibility and height, making vibration control a significant engineering challenge, as vibration can affect performance, lifespan, and safety. Furthermore, the internal space of wind turbines is usually limited, and existing TLD devices are bulky and difficult to fit into the installation environment within wind turbine towers. Installing a TLD may also require additional support structures or fixing devices, increasing design and construction complexity. Utility Model Content

[0004] The present invention aims to solve one of the problems in the background art.

[0005] Therefore, this utility model provides a tuned liquid damper for a wind turbine.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A tuned liquid damper for a wind turbine includes,

[0008] A water tank, wherein the water tank is provided with a water inlet and a sealing cap for covering the water inlet;

[0009] A grille is installed inside the water tank, and the grille divides the inner cavity of the water tank into multiple interconnected liquid chambers.

[0010] Furthermore, the water tank is configured as a flat cylindrical shape.

[0011] Furthermore, the grille is provided with vertical grooves extending along the axial direction of the water tank.

[0012] Further, the support frame is provided with a plurality of waist-shaped holes opposite to the limiting rods, the limiting rods pass through the waist-shaped holes, bolts are connected to the limiting rods, the bolts are located on both sides of the waist-shaped holes, and the limiting rods move along the length direction of the waist-shaped holes to adjust the distance between the adjacent limiting rods on the same support frame.

[0013] Further, the support frame is provided with a plurality of waist-shaped holes opposite to the limiting rods, the limiting rods pass through the waist-shaped holes, bolts are connected to the limiting rods, the bolts are located on both sides of the waist-shaped holes, and the limiting rods move along the length direction of the waist-shaped holes to adjust the distance between the adjacent limiting rods on the same support frame.

[0014] Further, the support frame is provided with a plurality of waist-shaped holes opposite to the limiting rods, the limiting rods pass through the waist-shaped holes, bolts are connected to the limiting rods, the bolts are located on both sides of the waist-shaped holes, and the limiting rods move along the length direction of the waist-shaped holes to adjust the distance between the adjacent limiting rods on the same support frame.

[0015] Further, the support frame is provided with a plurality of waist-shaped holes opposite to the limiting rods, the limiting rods pass through the waist-shaped holes, bolts are connected to the limiting rods, the bolts are located on both sides of the waist-shaped holes, and the limiting rods move along the length direction of the waist-shaped holes to adjust the distance between the adjacent limiting rods on the same support frame.

[0016] Further, the support frame is provided with a plurality of waist-shaped holes opposite to the limiting rods, the limiting rods pass through the waist-shaped holes, bolts are connected to the limiting rods, the bolts are located on both sides of the waist-shaped holes, and the limiting rods move along the length direction of the waist-shaped holes to adjust the distance between the adjacent limiting rods on the same support frame.

[0017] Further, the support frame is provided with a plurality of waist-shaped holes opposite to the limiting rods, the limiting rods pass through the waist-shaped holes, bolts are connected to the limiting rods, the bolts are located on both sides of the waist-shaped holes, and the limiting rods move along the length direction of the waist-shaped holes to adjust the distance between the adjacent limiting rods on the same support frame.

[0018] The utility model discloses the beneficial effect is, the tuning liquid damper in the application designs into the flat cylinder, can adapt to the installation of limited space in wind driven generator tower cylinder, and the grid of grid shape is arranged in the water tank, a plurality of dampers are arranged in the circumferential direction of the tower cylinder to improve the damping effect.

[0019] Through the magnetic attraction between the fixed block and the connecting block, the damper is clamped between the four limiting rods on the adjacent support frames to realize flexible installation of the damper, BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model is further illustrated below in connection with the drawings and examples.

[0021] Figure 1 It is the structure schematic view of the tuning liquid damper of wind driven generator in the utility model.

[0022] Figure 2 It is the structure schematic view of the grid in the utility model.

[0023] Figure 3 is the structural schematic diagram of the mounting relationship between the tuning liquid damper and the wind turbine tower drum in the wind turbine of the utility model.

[0024] Figure 4 is the structural schematic diagram of the support frame.

[0025] In the figure: 1, liquid damper; 11, water tank; 12, grid; 13, water inlet; 14, sealing cover; 15, vertical groove; 2, tower drum; 3, fixed block; 4, connecting block; 5, connecting rod; 6, support frame; 7, limiting rod; 8, waist-shaped hole; 9, through-length rod. DETAILED DESCRIPTION

[0026] The utility model will be further described in detail in combination with the drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the utility model in a schematic manner, so they only show the structure related to the utility model.

[0027] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] The tuning liquid damper 1 of the wind driven generator comprises a support frame 6, a water tank 11 and a grid 12, the water tank 11 is arranged in a flat cylindrical shape, the water tank 11 is provided with a water filling opening 13 and a sealing cover 14 for shielding the water filling opening 13, the water filling opening 13 is provided with an annular sealing groove and is installed with an O-ring, the sealing cover 14 is screwed with the water filling opening 13, and the O-ring is compressed to realize sealing.

[0030] The grid 12 is arranged in a quadrature net shape, the grid 12 is arranged in the water tank 11, the grid 12 is provided with vertical grooves 15 extending along the axial direction of the water tank 11 to generate damping, and the grid 12 divides the inner cavity of the water tank 11 into a plurality of liquid cavities in communication with each other, the water tank 11 and the grid 12 are welded by 304 stainless steel, and can form a cavity with good sealing performance and is not easy to deform.

[0031] The support frame 6 is provided with a plurality of support frames 6 arranged along the circumferential direction of the inner side wall of the wind driven generator tower 2, the support frames 6 located in the same plane are a group, a plurality of groups of support frames 6 are arranged along the axial direction of the wind driven generator tower 2, and the support frames 6 are oppositely arranged along the axial direction of the wind driven generator tower 2. The adjacent two support frames 6 in each group of support frames 6 are a pair, and the tuning liquid damper 1 of the wind driven generator is arranged on the pair of support frames 6.

[0032] Specifically, the tuning liquid damper 1 of the wind driven generator further comprises a fixing block 3 and a connecting block 4, the fixing block 3 and the connecting block 4 are provided with a plurality of fixing blocks 3 and connecting blocks 4 along the axial direction of the wind driven generator tower 2, the fixing block 3 and the connecting block 4 are also provided with a plurality of fixing blocks 3 and connecting blocks 4 along the circumferential direction of the wind driven generator tower 2, the fixing block 3 is magnetically connected with the wind driven generator tower 2. One connecting block 4 is connected to one fixing block 3, a connecting rod 5 is connected to the fixing block 3, the connecting block 4 is provided with a through hole for the connecting rod 5 to pass through, the connecting rod 5 is connected with a nut through the through hole, the fixing block 3 and the connecting block 4 are both magnetic, the fixing block 3 and the connecting block 4 are magnetically connected, the support frame 6 is connected between the adjacent connecting blocks 4 in the vertical direction, and the support frame 6 is connected with the two adjacent connecting blocks 4 in the vertical direction through screws.

[0033] At least two limiting rods 7 are arranged on each support frame 6, a waist-shaped hole 8 opposite to the limiting rod 7 is arranged on the support frame 6, the limiting rod 7 penetrates through the waist-shaped hole 8, a bolt is connected to the limiting rod 7, the bolt is located on both sides of the waist-shaped hole 8, the limiting rod 7 moves along the length direction of the waist-shaped hole 8 to adjust the distance between the adjacent limiting rods 7 on the same support frame 6, and the tuning liquid damper 1 of the wind driven generator is clamped between the limiting rods 7 of the adjacent pair of support frames 6. The limiting rods 7 on the support frames 6 opposite in the vertical direction are connected to each other to form a through rod 9.

[0034] The bottom of the wind turbine tower 2 is provided with a collecting plate along the axial direction of the wind turbine tower 2, and the liquid tuned damper of each column of wind turbines is a group of TLD components, and each TLD component is provided with a water immersion alarm device at the lower part, when the water leakage occurs, the water will flow into the collecting plate at the bottom, trigger the water immersion alarm signal and transmit to the remote control end in real time.

[0035] The above ideal embodiments according to the utility model are used as inspiration, and through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content in the specification, and the technical scope must be determined by the scope of claims.

Claims

1. A tuned liquid damper for a wind turbine, arranged in a wind turbine tower (2), characterized in that, Including, a water tank (11) provided with a water inlet (13) and a sealing cover (14) for shielding the water inlet (13); a grid (12) arranged in the water tank (11), which divides the inner cavity of the water tank (11) into a plurality of interconnected liquid chambers.

2. The tuned liquid damper for wind turbines according to claim 1, characterized in that The water tank (11) is provided in a flat cylindrical shape.

3. The tuned liquid damper for wind turbines according to claim 1, characterized in that, The grid (12) is provided with vertical grooves (15) extending in the axial direction of the water tank (11).

4. The tuned liquid damper for wind turbines according to claim 1, characterized in that, Further comprising a plurality of support frames (6) arranged along the circumference of the inner side wall of the wind turbine tower (2), and at least two limiting rods (7) are arranged on each support frame (6) in a spaced manner, the axial direction of the limiting rod (7) is parallel to the axial direction of the wind turbine tower (2), and the water tank (11) is clamped between the limiting rods (7) on the adjacent two support frames (6).

5. The tuned liquid damper for wind turbines according to claim 4, characterized in that The support frame (6) is provided with a waist-shaped hole (8) opposite to the limiting rod (7), the limiting rod (7) penetrates the waist-shaped hole (8), a bolt is connected to the limiting rod (7), the bolt is located on both sides of the waist-shaped hole (8), and the limiting rod (7) moves along the length direction of the waist-shaped hole (8) to adjust the distance between the adjacent limiting rods (7) on the same support frame (6).

6. The tuned liquid damper for wind turbines according to claim 4, characterized in that The support frame (6) is arranged in the axial direction of the wind turbine tower (2), and the limiting rods (7) on the oppositely arranged support frames (6) are connected to form a through rod (9) in the axial direction of the wind turbine tower (2).

7. The tuned liquid damper for wind turbines according to claim 4, characterized in that, Further comprising a plurality of fixing blocks (3) arranged between the adjacent support frames (6) in the vertical direction, and the support frames (6) are connected to the inner wall of the wind turbine tower (2) through the fixing blocks (3).

8. The tuned liquid damper for wind turbines according to claim 7, characterized in that Further comprising a connecting block (4), a connecting rod (5) is connected to the fixing block (3), the connecting block (4) is provided with a through hole for the connecting rod (5) to pass through, the connecting rod (5) passes through the through hole and is connected with a nut, and the support frame (6) and the connecting block (4) are connected through a screw.

9. The tuned liquid damper for wind turbines according to claim 8, characterized in that The fixing block (3) and the connecting block (4) are magnetically connected.

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