Wind power tower drum steel strand damping device

Abstract

The utility model provides a wind power tower drum steel strand damping device which comprises a tower drum and a steel strand vertically arranged in the tower drum and further comprises a fixing plate fixed to the inner side wall of the tower drum, a chain structure is fixed to the fixing plate, and the free end of the chain structure is fixed to the steel strand and used for tensioning the steel strand. The damping device can effectively prevent the steel strands from shaking greatly, thereby effectively damping and improving the stability of the tower drum.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generators, in particular to a wind power tower steel strand vibration reduction device. Background Art

[0002] Wind turbines convert wind energy into mechanical work. The wind rotor rotates under the action of wind force, which converts the kinetic energy of wind into mechanical energy of the wind rotor shaft. The generator rotates and generates electricity under the drive of the wind rotor shaft. It is a green power generation equipment. Wind turbines are generally composed of impellers, wheel cabins, direction regulators, towers, speed limit safety mechanisms and energy storage devices.

[0003] Among them, the tower, also known as the tower pole or tower, mainly plays a supporting role in the wind turbine generator set and absorbs the vibration of the unit; the tower is generally made of metal or reinforced concrete, the purpose is to adapt to different working conditions and actual environments, but whether it is reinforced concrete or metal tower, it needs to be manufactured in sections during production, which is to facilitate transportation to the site for installation, because in most cases, transportation equipment cannot directly transport nearly 100 meters long towers. Therefore, during on-site installation, it is necessary to lift the tower sections one by one, so that they can be stacked and installed, and finally form a tower of full height. Since the formed tower needs to withstand wind forces from all directions and the vibration of the rotating impeller, in order to ensure that the tower does not fall, the engineers will set up multiple vertical steel strands inside the tower. The upper end of the steel strand is fixed to the top of the tower, and the lower end is fixed to the ground at the bottom of the tower, which is equivalent to providing a pulling force to pull the tower to prevent it from falling. When the tower is subjected to lateral wind force, the steel strands may shake significantly and the vibration will increase, which will increase the stress on the entire steel strand and affect the stability of the tower. Summary of the invention

[0004] The problem solved by the utility model is to provide a wind power tower steel strand shock absorbing device, which can effectively prevent the steel strand from shaking greatly, thereby effectively absorbing shock and increasing the stability of the tower.

[0005] In order to solve the above problems, the utility model provides a wind turbine tower steel strand shock absorbing device, comprising a tower and a steel strand vertically arranged in the tower, and also comprising a fixing plate fixed on the inner wall of the tower, a chain structure fixed on the fixing plate, and the free end of the chain structure is fixed to the steel strand for tensioning the steel strand.

[0006] Compared with the prior art, the present application has the following advantages: the fixing plate is used to fix one end of the chain structure, and then the free end of the chain structure is fixed to the steel strand, which is equivalent to pulling the steel strand. When the tower is subjected to lateral wind force, the steel strand is not prone to large-scale shaking, thereby effectively reducing shock, reducing the overall force on the steel strand, and thus increasing the stability of the tower.

[0007] In a possible embodiment, the chain structure includes a first chain part, a spherical part, a universal ball and a second chain part; one end of the first chain part is fixedly connected to the fixed plate, the free end of the first chain part is fixedly connected to the spherical part, a universal groove is provided on the spherical part, and the universal ball can be rotatably disposed in the universal groove; one end of the second chain part is fixed to the universal ball, and the other end is fixed to the steel wire rope.

[0008] Compared with the prior art, the above technical solution can cause the steel strands to deform and move up and down when the tower is subjected to lateral wind force. The universal ball structure can provide space for the steel strands to move up and down, allowing the steel strands to release a certain amount of force.

[0009] In a possible implementation manner, a protective sleeve is wound around the outer peripheral wall of the steel strand, and the other end of the second chain portion passes through the protective sleeve and is fixed to the steel strand.

[0010] Compared with the prior art, the above technical solution can protect the steel strands and have a certain buffering and shock-absorbing effect.

[0011] In a possible implementation manner, the protective cover is made of rubber.

[0012] Compared with the prior art, the rubber using the above technical solution has better elasticity and can effectively play a role in buffering and shock absorption.

[0013] In a possible implementation manner, a flange is fixed on the outer peripheral wall of the protective sleeve, and the other end of the second chain part is fixed to the flange.

[0014] Compared with the prior art, the above technical solution can effectively fix the other end of the second chain part to the steel strand, which is convenient for construction.

[0015] In a possible implementation manner, the fixing plate is fixed to the inner wall of the tower by bolts.

[0016] Compared with the prior art, the above technical solution enables the fixing plate to be firmly and stably fixed on the inner wall of the tower, and can be removed when not needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a side sectional view of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Description of reference numerals:

[0020] 1-tower, 11-fixing plate, 12-chain structure, 13-bolt, 100-steel strand, 100.1-protective cover, 100.2-flange, 121-first chain part, 122-spherical part, 122.1-universal groove, 123-universal ball, 124-second chain part. DETAILED DESCRIPTION

[0021] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0022] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0023] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In some embodiments, a wind turbine tower steel strand shock absorbing device is provided, comprising a tower 1 and a steel strand 100 vertically arranged in the tower 1, and also comprising a fixing plate 11 fixed on the inner wall of the tower 1, a chain structure 12 being fixed on the fixing plate 11, and a free end of the chain structure 12 being fixed to the steel strand 100 for tensioning the steel strand 100.

[0026] In this embodiment, the fixing plate 11 can be fixed to the inner wall of the tower 1 by means of existing technologies such as expansion screws. The fixing plate 11 is used to fix one end of the chain structure 12. In this embodiment, the chain structure 12 can be an iron chain or a stainless steel chain. The free end of the chain structure 12 is fixed to the steel strand 100, which is equivalent to pulling the steel strand 100. When the tower 1 is subjected to lateral wind force, the steel strand 100 is not prone to large-scale shaking, thereby effectively reducing shock, reducing the force on the overall steel strand 100, and increasing the stability of the tower 1.

[0027] In some embodiments, the chain structure 12 includes a first chain portion 121, a spherical portion 122, a universal ball 123 and a second chain portion 124; one end of the first chain portion 121 is fixedly connected to the fixed plate 11, and the free end of the first chain portion 121 is fixedly connected to the spherical portion 122. A universal groove 122.1 is provided on the spherical portion 122, and the universal ball 123 can be rotatably disposed in the universal groove 122.1; one end of the second chain portion 124 is fixed to the universal ball 12.12, and the other end is fixed to the steel strand 100.

[0028] In this embodiment, the spherical portion 122 and the free end of the first chain portion 121 are integrally formed. When the tower 1 is subjected to lateral wind force, the shaking generated may cause the steel strand 100 to deform and move up and down. The universal ball 123 structure can provide space for the steel strand 100 to move up and down, allowing the steel strand 100 to release a certain amount of force.

[0029] In some embodiments, a protective sleeve 100.1 is wound around the outer wall of the steel strand 100, and the other end of the second chain portion 124 passes through the protective sleeve 100.1 and is fixed to the steel strand 100. The protective sleeve 100.1 protects the steel strand 100 and has a certain buffering and shock absorbing effect.

[0030] In some embodiments, the protective cover 100.1 is made of rubber, which has good elasticity and can effectively play a role in buffering and shock absorption.

[0031] In some embodiments, a flange 100.2 is fixed on the outer peripheral wall of the protective cover 100.1, and the other end of the second chain part 124 is fixed to the flange 100.2. The flange 100.2 allows the other end of the second chain part 124 to be effectively fixed to the steel strand 100, which is convenient for construction. In this embodiment, the other end of the second chain part 124 can be fixed to the flange 100.2 by welding.

[0032] In some embodiments, the fixing plate 11 is fixed to the inner wall of the tower 1 by bolts 13. Both sides of the fixing plate 11 in the up and down directions are fixed to the inner wall of the tower 1 by bolts 13, and the bolts 13 can firmly and stably fix the fixing plate 11 to the inner wall of the tower 1, and can be removed when not needed.

[0033] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0034] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A wind power tower steel strand vibration reduction device, comprising a tower (1) and a steel strand (100) vertically arranged in the tower (1), characterized in that: It also includes a fixing plate (11) fixed to the inner wall of the tower (1), a chain structure (12) being fixed to the fixing plate (11), and a free end of the chain structure (12) being fixed to the steel strand (100) for tensioning the steel strand (100).

2. The wind turbine tower steel strand vibration reduction device according to claim 1, characterized in that: The chain structure (12) comprises a first chain part (121), a spherical part (122), a universal ball (123) and a second chain part (124); one end of the first chain part (121) is fixedly connected to the fixed plate (11), the free end of the first chain part (121) is fixedly connected to the spherical part (122), a universal groove (122.1) is provided on the spherical part (122), and the universal ball (123) is rotatable in the universal groove (122.1); one end of the second chain part (124) is fixed to the universal ball (123), and the other end is fixed to the steel strand (100).

3. The wind turbine tower steel strand vibration reduction device according to claim 2, characterized in that: A protective sleeve (100.1) is wound around the outer peripheral wall of the steel strand (100), and the other end of the second chain portion (124) passes through the protective sleeve (100.1) and is fixed to the steel strand (100).

4. The wind turbine tower steel strand vibration reduction device according to claim 3, characterized in that: The protective sleeve (100.1) is made of rubber.

5. The wind turbine tower steel strand vibration reduction device according to claim 3 or 4, characterized in that: A flange (100.2) is fixed on the outer peripheral wall of the protective sleeve (100.1), and the other end of the second chain part (124) is fixed to the flange (100.2).

6. The wind turbine tower steel strand vibration reduction device according to claim 1, 2, 3 or 4, characterized in that: The fixing plate (11) is fixed to the inner wall of the tower (1) by means of bolts (13).

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