Rotary energy dissipation physical pendulum device for vibration control of fan tower drum

Abstract

The utility model discloses a rotary energy dissipation physical pendulum device for vibration control of a fan tower, which comprises a physical pendulum arranged in the fan tower; the number of the rigid plates is two, the two sets of rigid plates are arranged at the top end and the middle position of the fan tower barrel correspondingly, and the top end of the physical pendulum is rotationally connected with the rigid plate located at the top end of the fan tower barrel through a rotating energy dissipation hinge; the top face of the sliding plate is arranged to be an arc face, and the circle center, corresponding to an arc, of the arc face is concentric with the rotating energy dissipation hinge. The rigid ball assembly is mounted at the bottom end of the physical pendulum, and the rigid ball assembly is in sliding fit with the cambered surface; and the vibration reduction assembly is arranged on the inner wall of the fan tower barrel and corresponds to the rigid ball assembly. The TMD can be installed at the corresponding height of the tower drum according to the performance requirement of the fan tower drum, the problem that construction is complex when a traditional TMD is installed in a limited space is solved, application is flexible, and the TMD is suitable for being used in various fan tower drums.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan vibration control technical field, especially a kind of rotating energy dissipation physical swing device for fan tower vibration control. BACKGROUND

[0002] Due to the increasing demand for electricity and the expectation of efficiency, 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] The traditional tuned mass damper (TMD) has the technical problem of complex construction in limited space installation. Based on this, the utility model provides a rotating energy dissipation physical swing device for fan tower vibration control. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a rotating energy dissipation physical swing device for fan tower vibration control to solve the problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following scheme: the utility model provides a rotating energy dissipation physical swing device for fan tower vibration control, comprising:

[0006] Physical swing, the physical swing is arranged in the fan tower;

[0007] Rigid plate, the rigid plate is provided with two groups, two groups of rigid plates are arranged at the top end and the middle position of the fan tower respectively, the top end of the physical swing is rotatably connected with the rigid plate at the top end of the fan tower through a rotating energy dissipation hinge;

[0008] Sliding plate, the sliding plate is fixed on the top surface of the rigid plate at the middle position of the fan tower, the top surface of the sliding plate is arranged as an arc surface, and the center of the arc corresponding to the arc line is concentric with the rotating energy dissipation hinge;

[0009] Rigid ball assembly, the rigid ball assembly is installed at the bottom end of the physical swing, and the rigid ball assembly is in sliding fit with the arc surface;

[0010] Vibration reduction assembly, the vibration reduction assembly is arranged on the inner wall of the fan tower and is arranged correspondingly with the rigid ball assembly.

[0011] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the rotating energy dissipation hinge comprises a rotating energy dissipation damper, the rotating energy dissipation damper is fixed on the rigid plate at the top end of the wind turbine tower through high-strength bolts, and the top end of the physical pendulum is fixed on the rotating energy dissipation damper.

[0012] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the rigid ball assembly comprises a support and a rolling ball, the support is fixed at the bottom end of the physical pendulum, the rolling ball is rotatably connected to the support, and the rolling ball is in sliding fit with the cambered surface.

[0013] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the sliding plate and the rigid plate at the middle position of the wind turbine tower are fixedly connected through high-strength bolts.

[0014] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the cross section shape of the physical pendulum is circular.

[0015] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the rigid plate is fixedly connected between the flange plate and the top end of the wind turbine tower.

[0016] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the damping assembly comprises a damping ring, the damping ring is fixed in the wind turbine tower, and the damping ring is made of high-performance damping material.

[0017] According to the rotating energy dissipation physical pendulum device for wind turbine tower vibration control provided by the utility model, the material of the sliding plate is durable low-friction polytetrafluoroethylene material.

[0018] The utility model discloses the following technical effects:

[0019] The utility model overcomes the deficiency that the traditional TMD is installed in the limited internal space of the fan cabin, and the control effect is limited. By utilizing the sufficient space in the top range of the tower, the diameter and length of the physical pendulum can be flexibly adjusted, the control design of greater mass ratio is realized, and therefore the control effect and robust performance on the vibration response of the wind turbine tower are improved.

[0020] The utility model can be installed at the corresponding height of the tower according to the performance demand of the wind turbine tower, avoids the complex construction problem existing in the limited space installation of the traditional TMD, is flexible in application, and is suitable for use in various wind turbine towers. In addition, under the action of gravity, self-resetting can be realized without external energy input.

[0021] The utility model provides a kind of for fan tower vibration control rotating energy dissipation physical swing device, can control fan vibration response under the action of wind and earthquake load, improve the safety performance of structure.Under the action of wind and earthquake, the rotating energy dissipation physical swing device for fan tower vibration control can be regarded as structure-PTMD system, wherein fan tower is structure part, physical swing and rotating energy dissipation hinge constitute PTMD system, and vibration of fan tower caused by wind and earthquake can be reduced by rotating energy dissipation by optimizing the design parameter of rotating energy dissipation hinge, to play the role of protecting fan safety. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed in the embodiments will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the premise of these drawings.

[0023] Figure 1 It is the structure schematic diagram of the rotating energy dissipation physical swing device for fan tower vibration control of the utility model;

[0024] Figure 2 It is the overall schematic diagram of the rotating energy dissipation physical swing device for fan tower vibration control of the utility model at the top of fan tower;

[0025] Figure 3 It is the rotating energy dissipation hinge schematic diagram of the rotating energy dissipation physical swing device for fan tower vibration control of the utility model;

[0026] Figure 4 It is the axonometric drawing of the rolling ball device of the rotating energy dissipation physical swing device for fan tower vibration control of the utility model.

[0027] In the drawing: 1, fan tower;2, physical swing;3, rigid plate;4, camber;5, vibration ring;6, rotating energy dissipation hinge;7, rolling ball device. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0029] 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.

[0030] With reference to Figures 1-4 The utility model provides a kind of rotary energy dissipation physical swing device for fan tower vibration control, comprising:

[0031] Physical swing 2 is arranged in fan tower 1;

[0032] Rigid plate 3 is provided with two groups, and the two groups of rigid plate 3 are arranged at the top end and intermediate position of fan tower 1 respectively, and the top end of physical swing 2 is rotatably connected with the rigid plate 3 at the top end of fan tower 1 through rotary energy dissipation hinge 6;

[0033] Sliding plate is fixed on the top surface of rigid plate 3 at the intermediate position of fan tower 1, and the top surface of sliding plate is provided with arc surface 4, and the center of arc surface 4 corresponding to arc line is concentric with rotary energy dissipation hinge 6;

[0034] Rigid ball assembly is installed at the bottom end of physical swing 2, and rigid ball assembly is slidably connected with arc surface 4;

[0035] Vibration reduction assembly is arranged on the inner wall of fan tower 1 and is arranged corresponding to rigid ball assembly.

[0036] In the embodiment, sanding belt can be arranged on arc surface 4, and the friction coefficient of sanding belt increases along two sides, so that energy can be absorbed by friction.

[0037] Further optimization scheme, rotary energy dissipation hinge 6 includes rotary energy dissipation damper, and rotary energy dissipation damper is fixed on the rigid plate 3 at the top end of fan tower 1 through high-strength bolt, and the top end of physical swing 2 is fixed on rotary energy dissipation damper. The specific model of rotary energy dissipation damper is selected according to actual needs, to realize rotary energy dissipation and reduce the vibration of fan tower caused by wind and earthquake.

[0038] Further optimization scheme, rigid ball assembly includes support and ball, support is fixed at the bottom end of physical swing 2, ball is rotatably connected to support, and ball is slidably connected with arc surface 4.

[0039] Further optimization scheme, sliding plate and rigid plate 3 at the intermediate position of fan tower 1 are fixedly connected through high-strength bolt.

[0040] Further optimization scheme, the cross-sectional shape of physical swing 2 is circular. According to the internal space size of fan tower 1, the diameter and length of physical swing 2 can be adjusted to meet the selection of mass ratio between different physical swing 2 and tower.

[0041] Further optimization scheme, rigid plate 3 is fixedly connected between the flange and the top end of fan tower drum 1.

[0042] Further optimization scheme, the damping assembly includes a damping ring 5, the damping ring 5 is fixed in the fan tower drum 1, and the damping ring 5 is made of high-performance damping material.

[0043] Further optimization scheme, the material of the sliding plate is made of durable low-friction polytetrafluoroethylene material.

[0044] 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 based on 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, and therefore cannot be understood as a limitation on the utility model.

[0045] The above-described embodiments are only preferred modes of the utility model, and do not limit the scope of the utility model, and various modifications and improvements to the technical scheme of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope of the utility model claimed.

Claims

1. A rotational energy dissipating physical pendulum device for wind turbine tower vibration control, characterized by, The utility model relates to a wind turbine tower damping device, including: Physical pendulum (2) is arranged in the fan tower drum (1); Rigid plate (3) is provided with two groups, and two groups of rigid plate (3) are arranged at the top end and intermediate position of fan tower drum (1) respectively, and the top end of physical pendulum (2) is rotatably connected with the rigid plate (3) at the top end of fan tower drum (1) through rotary energy dissipation hinge (6); The top surface of the sliding plate is fixed to the top surface of the rigid plate (3) at the intermediate position of the fan tower drum (1), and the top surface of the sliding plate is provided as an arc surface (4) corresponding to the center of the arc circle concentric with the rotary energy dissipation hinge (6); The rigid ball assembly is installed at the bottom end of the physical pendulum (2), and the rigid ball assembly is in sliding fit with the arc surface (4); The damping assembly is arranged on the inner wall of the fan tower drum (1) and is arranged corresponding to the rigid ball assembly.

2. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The rotary energy dissipation hinge (6) includes a rotary energy dissipation damper fixed on the rigid plate (3) at the top end of the fan tower drum (1) by high-strength bolts, and the top end of the physical pendulum (2) is fixed on the rotary energy dissipation damper.

3. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The rigid ball assembly includes a support fixed at the bottom end of the physical pendulum (2) and a ball rotatably connected to the support, and the ball is in sliding fit with the arc surface (4).

4. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The sliding plate and the rigid plate (3) at the intermediate position of the fan tower drum (1) are fixedly connected by high-strength bolts.

5. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The cross-sectional shape of the physical pendulum (2) is circular.

6. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The rigid plate (3) is fixedly connected between the flange and the top end of the fan tower drum (1).

7. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The damping assembly includes a damping ring (5) fixed in the fan tower drum (1), and the damping ring (5) is made of high-performance damping material.

8. A rotational energy dissipating physical pendulum apparatus for wind turbine tower vibration control according to claim 1, characterized in that: The material of the sliding plate is made of durable low-friction polytetrafluoroethylene material.

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