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Vibration control device for windmill for wind-powered electricity generation, and windmill for wind-powered electricity generation

A technology of shock absorbing device and windmill, which is applied in the direction of installing/supporting the configuration of wind turbines, wind turbine components, wind power generation, etc., and can solve problems such as increased weight of pillars

Inactive Publication Date: 2012-10-03
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to reinforce the inner wall surface of the pillar, and there is a problem that the weight of the pillar increases.

Method used

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  • Vibration control device for windmill for wind-powered electricity generation, and windmill for wind-powered electricity generation
  • Vibration control device for windmill for wind-powered electricity generation, and windmill for wind-powered electricity generation
  • Vibration control device for windmill for wind-powered electricity generation, and windmill for wind-powered electricity generation

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Embodiment Construction

[0053] refer to Figure 1 to Figure 9 A damper device for a wind turbine for wind power generation according to an embodiment of the present invention will be described.

[0054] figure 1 It is a side view showing the outline of a wind turbine for wind power generation equipped with a damper device for a wind power generation wind turbine according to an embodiment of the present invention, viewed from the left side of the pillar; figure 2 It is a cross-sectional view showing the state inside the pillar of the wind turbine for wind power generation equipped with the damping device of the wind turbine for wind power generation according to this embodiment, and is a view viewed from the left side of the pillar; image 3 It is a figure showing the structure of the shock absorber device of the windmill for wind power generation according to one embodiment of the present invention; Figure 4 is enlarged image 3 The picture of the main part; Figure 5 It is a diagram illustrat...

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Abstract

Provided is a vibration control device for a windmill for wind-powered electricity generation, which can be arranged in a narrow space within a supporting post without an accompanying increase in the weight of the supporting post, and which is capable of changing the characteristic frequency of the supporting post. The vibration control device is equipped with: a pendulum (21), which is equipped with a swinging rod (23) extending in the height direction of the supporting post and suspended via a first universal joint (31) from joists (15, 16) provided in the upper part of the aforementioned supporting post, a flange part (24) extending outward radially in the circumferential direction from the outer surface at the upper end of the swinging rod (23), and a weight (25) attached to the swinging rod (23) and capable of ascending and descending in the axial direction of the swinging rod (23); and multiple attenuation devices (22), the upper ends of which are attached to the joists (15, 16) via second universal joints (32) and the lower ends of which are attached to the flange part (24) via third universal joints (33).

Description

technical field [0001] The present invention relates to a damping device suitable for a windmill for wind power generation. Background technique [0002] In recent years, in order to improve power generation efficiency and increase power generation capacity, wind turbines for wind power generation tend to be designed with a hub height (height from the ground to the center of the hub) exceeding 100 m and become large-scale equipment. [0003] However, in a wind turbine for wind power generation with a hub height exceeding 100m, the first-order natural frequency of the strut (tower) coincides with the resonance region generated by the rotation of the rotor head and the rotating blades of the wind turbine, which may greatly increase the fatigue load on the strut . Therefore, in order to reduce the fatigue load of the strut, it is necessary to increase the wall thickness of the strut, which has a problem that the weight of the strut is greatly increased. [0004] Therefore, in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/04
CPCY02E10/722F05B2260/96F03D11/00F16F7/10F03D80/00Y02E10/728Y02E10/72F03D13/20E04H12/00F05B2240/912F05B2260/964
Inventor 川端稔久保充司
Owner MITSUBISHI HEAVY IND LTD
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