Embedded sliding tuning column device for reducing top vibration of fan tower drum

Abstract

The utility model discloses an embedded sliding tuning column device for reducing vibration of the top of a fan tower. The embedded sliding tuning column device comprises the fan tower, a tuning column, an energy dissipation mechanism and a sliding mechanism. A vibration reduction ring is mounted at the top of the inner wall of the fan tower barrel; the tuning column is vertically mounted in an inner cavity of the fan tower barrel; the energy dissipation mechanism comprises a plurality of energy dissipation elements, and the energy dissipation elements are all installed between the outer side wall of the tuning column and the inner side wall of the fan tower. The number of the sliding mechanisms is at least two, the two sliding mechanisms are installed on the top and the bottom of the tuning column respectively, and the two sliding mechanisms are installed on the top and the bottom of the inner wall of the fan tower drum through rigid connecting pieces respectively. The horizontal bidirectional vibration response of the top of the fan tower drum is controlled, fan tower drum vibration caused by wind and earthquakes can be reduced, the safety of the structure is improved, better control performance is achieved, construction is convenient, application is flexible, and the manufacturing cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan vibration control technical field, especially a kind of embedded sliding tuning column device for reducing the vibration of fan tower top. BACKGROUND

[0002] Due to the increase in demand for electricity and the expectation of efficiency in the commercial market, modern wind turbines are built higher and higher to capture more energy. The fan tower is the main supporting structure in the wind turbine unit, which connects the fan with the ground and provides the required height for the horizontal axis impeller. In addition to bearing the weight of the unit itself, the tower also bears the wind and seismic load. The fan tower is a high-rise structure with low inherent damping, and when subjected to strong wind load and seismic load, it will produce excessive vibration response. The vibration response at the top of the fan tower is the most unfavorable place, so it is necessary to take measures to reduce the vibration amplitude at the top of the fan tower to improve its structural safety and prolong its service life.

[0003] In the prior art, the traditional tuned mass damper (TMD) is installed in the limited internal space of the fan cabin, resulting in limited control effect and complex construction. At the same time, the traditional TMD is mainly used to control single-direction vibration response, such as horizontal single-direction vibration. However, under the action of wind load and seismic load, the fan tower often produces complex vibration in multiple directions. Therefore, the traditional TMD has deficiencies in controlling multi-directional vibration response, and it is difficult to meet the high requirements of modern wind turbines for vibration reduction performance.

[0004] Therefore, an embedded sliding tuning column device for reducing the vibration of fan tower top is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims to provide an embedded sliding tuning column device for reducing the vibration of fan tower top, to solve or improve at least one of the above technical problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme: the utility model provides an embedded sliding tuning column device for reducing the vibration of fan tower top, comprising:

[0007] The fan tower has a vibration ring installed on the top of the inner wall;

[0008] The tuning column is vertically installed in the inner cavity of the fan tower;

[0009] The energy dissipation mechanism includes a plurality of energy dissipation elements, and the plurality of energy dissipation elements are installed between the outer side wall of the tuning column and the inner side wall of the fan tower;

[0010] The sliding mechanism is provided with at least two, and the two sliding mechanisms are respectively installed at the top and bottom of the tuning column and are respectively installed at the top and bottom of the inner wall of the fan tower by rigid connectors.

[0011] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the two sliding mechanisms are respectively installed at the top and bottom of the tuning column by a plurality of high-strength bolts.

[0012] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the fan tower is a steel tower, a reinforced concrete tower or a steel-concrete combined tower.

[0013] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, a plurality of the energy dissipation elements are arranged at equal intervals from top to bottom along the height direction of the tuning column.

[0014] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the energy dissipation element comprises a rotary damper and a spring combination, the rotary damper is installed between the outer side wall of the tuning column and the inner side wall of the fan tower, and the spring combination is installed on the rotary damper.

[0015] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the sliding mechanism adopts a steel ball roller support or a sliding support.

[0016] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the rigid connector adopts a rigid plate, and the rigid plate is fixedly connected with the fan tower through a flange plate.

[0017] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the tuning column has a circular cross section.

[0018] According to the embedded sliding tuning column device for reducing vibration of the top of the fan tower, the damping ring is made of high-performance damping material, and the high-performance damping material comprises a high-damping rubber ring and a polyurethane ring.

[0019] The utility model discloses the following technical effects:

[0020] The utility model discloses can flexibly adjust the diameter and length of tuning column through the sufficient space in the top of fan tower, realizes the control design of greater quality ratio, thereby promotes the control effect and robust performance to fan tower vibration response,

[0021] This invention can control the vibration response of wind turbines under wind and seismic loads, improving structural safety. Under wind and seismic loads, the tuning column and energy dissipation element together form a TMD system. The energy dissipation element realizes frequency tuning between the tuning column and the tower, achieving frequency modulation resonance. It can simultaneously control the horizontal bidirectional vibration response of the top of the wind turbine tower, reducing the vibration of the wind turbine tower caused by wind and earthquakes, thus ensuring the safety performance of the wind turbine tower. It not only has better control performance, but also facilitates construction, is flexible in application, and saves costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the wind turbine tower structure in this utility model;

[0025] Figure 3 This is a schematic diagram of the installation of the energy dissipation element and the wind turbine tower in this utility model;

[0026] Figure 4 This is a schematic diagram of the energy dissipation element in this utility model;

[0027] Figure 5 This is a schematic diagram of the internal structure of the wind turbine tower in this utility model;

[0028] Figure 6 This is a schematic diagram of the sliding device in this utility model.

[0029] Among them, 1. wind turbine tower; 2. tuning column; 3. energy dissipation element; 4. sliding device; 5. vibration damping ring; 6. rigid plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In order to make the above-mentioned purposes, characteristics and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be explained in further detail below in combination with the drawings and specific embodiments.

[0032] With reference to Figures 1-6 The utility model provides a kind of embedded sliding tuning column device for reducing the vibration of fan tower top, comprising:

[0033] Fan tower 1, vibration ring 5 is installed on the inner wall top of fan tower 1;

[0034] Tuning column 2, tuning column 2 is vertically installed in the inner cavity of fan tower 1;

[0035] Energy dissipation mechanism, energy dissipation mechanism includes several energy dissipation elements 3, several energy dissipation elements 3 are all installed between the outer side wall of tuning column 2 and the inner side wall of fan tower 1;

[0036] Sliding mechanism, sliding mechanism is equipped with at least two, two sliding mechanisms are respectively installed at the top and bottom of tuning column 2, and two sliding mechanisms are respectively installed at the inner wall top and inner wall bottom of fan tower 1 by rigid connecting piece;

[0037] So set, the utility model can flexibly adjust the diameter and length of tuning column 2 by using the sufficient space in the top range of fan tower 1, realize the control design of greater mass ratio, to improve the control effect and robust performance of fan tower 1 vibration response;

[0038] The utility model can control the vibration response of fan under the action of wind and earthquake load, improve the safety of structure, under the action of wind and earthquake, tuning column 2 and energy dissipation element 3 jointly form TMD system, realize the frequency tuning between tuning column 2 and fan tower 1 by energy dissipation element, reach the effect of frequency tuning resonance, can control the vibration response of fan tower top horizontal two-way simultaneously, can reduce the vibration of fan tower 1 caused by wind and earthquake, so that the safety performance of fan tower 1 is guaranteed, not only has better control performance, but also facilitates construction, application is flexible, saves cost.

[0039] Further optimization scheme, two sliding mechanisms are respectively installed at the top and bottom of tuning column 2 by several high-strength bolts;Pre-tightening force is provided by high-strength bolt, to ensure the close connection between sliding mechanism and tuning column 2, not only enhance the overall stability of structure, but also make sliding mechanism can more effectively transfer and disperse the force generated by tuning column 2 in sliding process, when tuning column 2 slides in fan tower 1, high-strength bolt can prevent the loosening or falling of connecting portion, to ensure the continuity and reliability of damping effect.

[0040] Further optimization scheme, the fan tower drum 1 is a steel tower drum, a reinforced concrete tower drum or a steel-concrete combined tower drum; the steel-concrete combined tower drum is a sectional tower drum combined with the steel tower drum and the reinforced concrete tower drum, the steel tower drum is the upper section and the reinforced concrete tower drum is the lower section;

[0041] The steel tower drum has high strength and good wind pressure resistance, the reinforced concrete tower drum has higher rigidity and bearing capacity, and the steel-concrete combined tower drum combines the advantages of both, and different tower drum structures can be selected according to specific wind load, seismic load and geographical environment and other factors to ensure the overall stability and safety of the fan tower drum.

[0042] Further optimization scheme, the energy dissipation elements 3 are arranged at equal intervals from top to bottom along the height direction of the tuning column 2; the energy dissipation elements 3 arranged at equal intervals can more effectively disperse and absorb vibration energy, and each energy dissipation element 3 can uniformly bear and dissipate energy when the tuning column 2 moves relative to the fan tower drum 1 in the sliding process, thereby avoiding local overload and damage.

[0043] Further optimization scheme, the energy dissipation element 3 includes a rotary damper and a spring combination, the rotary damper is installed between the outer side wall of the tuning column 2 and the inner side wall of the fan tower drum 1, and the spring combination is installed on the rotary damper;

[0044] When the tuning column 2 moves relative to the fan tower drum 1 in the vibration process, the rotary damper starts to work to absorb and dissipate vibration energy; at the same time, the spring combination also deforms to further absorb and store energy, and the rotary damper and the spring combination make the energy dissipation element 3 more flexible and efficient in vibration control.

[0045] Further optimization scheme, the sliding mechanism adopts a steel ball roller support or a sliding support; the steel ball roller support or the sliding support has a low friction coefficient and a high bearing capacity, which can ensure the stability and reliability of the tuning column 2 in the sliding process, and when the tuning column 2 is subjected to vibration, the steel ball roller support or the sliding support can allow it to slide freely along the predetermined trajectory while reducing the friction resistance, thereby more effectively transmitting and dispersing vibration energy.

[0046] Further optimization scheme, the rigid connecting piece adopts a rigid plate 6, and the rigid plate 6 is fixedly connected with the fan tower drum 1 through a flange plate to form an integrated structure; the use of the rigid plate 6 provides rigidity and stability.

[0047] Further optimization scheme, the section shape of the tuning column 2 is circular; the circular section shape makes the tuning column 2 have better uniformity and stability when subjected to wind load or seismic load; the circular section shape can also reduce the influence of wind resistance and vortex-induced vibration, thereby improving the damping effect of the whole device; at the same time, the circular section also facilitates processing and installation, reduces manufacturing cost and construction difficulty.

[0048] Further optimization scheme, the damping ring 5 is made of high-performance damping material, including high-damping rubber ring and polyurethane ring; the high-damping rubber ring and the polyurethane ring have excellent damping performance and elastic recovery capacity, when the fan tower 1 is subjected to vibration, the damping ring 5 can absorb and dissipate part of the vibration energy, thereby reducing the vibration amplitude and prolonging the service life of the structure; in addition, the high-damping rubber ring and the polyurethane ring material also have good weather resistance and corrosion resistance, and can adapt to various harsh environmental conditions.

[0049] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, 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, therefore it cannot be understood as a limitation on the utility model.

[0050] Obviously, the above-mentioned embodiments of the utility model are only examples for clearly describing the utility model, and are not a limitation on the implementation mode of the utility model. For ordinary skilled users in the field, on the basis of the above description, other different forms of changes or changes can also be made. Here, it is not necessary and impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower, characterized by, The utility model relates to a wind turbine tower damping device, including: A wind turbine tower (1) is provided with a damping ring (5) on the inner wall top of the wind turbine tower (1); A tuning column (2) is vertically installed in the inner cavity of the wind turbine tower (1); A damping mechanism is provided with a plurality of damping elements (3), and the plurality of damping elements (3) are installed between the outer side wall of the tuning column (2) and the inner side wall of the wind turbine tower (1); Two sliding mechanisms are provided, and the two sliding mechanisms are respectively installed at the top and bottom of the tuning column (2) and are respectively installed on the inner wall top and inner wall bottom of the wind turbine tower (1) through rigid connecting pieces.

2. The in-line sliding tuned column device to reduce vibration at the top of a wind turbine tower according to claim 1, wherein: The two sliding mechanisms are respectively installed on the top and bottom of the tuning column (2) through a plurality of high-strength bolts.

3. The in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower according to claim 1, wherein: The wind turbine tower (1) is a steel tower, a reinforced concrete tower or a steel-reinforced composite tower.

4. The in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower of claim 1, wherein: The plurality of damping elements (3) are arranged at equal intervals from top to bottom along the height direction of the tuning column (2).

5. The in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower of claim 1, wherein: The damping element (3) comprises a rotary damper and a spring combination, the rotary damper is installed between the outer side wall of the tuning column (2) and the inner side wall of the wind turbine tower (1), and the spring combination is installed on the rotary damper.

6. The in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower of claim 1, wherein: The sliding mechanism adopts a steel ball roller support or a sliding support.

7. The in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower of claim 1, wherein: The rigid connecting piece adopts a rigid plate (6), and the rigid plate (6) is fixedly connected with the wind turbine tower (1) through a flange plate.

8. The in-line sliding tuned column device to reduce vibrations at the top of a wind turbine tower of claim 1, wherein: The cross section of the tuning column (2) is circular.

9. The in-line sliding tuned column device to reduce vibration at the top of a wind turbine tower according to claim 7, wherein: The damping ring (5) is made of high-performance damping material, and the high-performance damping material includes a high-damping rubber ring and a polyurethane ring.

Images