Damper, wind turbine and installation method

Abstract

The invention relates to a damper, a wind turbine generator system and a mounting method. The damper comprises a base with a preset length and width, guide parts laminated and connected to the base and extending in the length direction of the base, mass blocks clamped on the guide parts and matched with arc surfaces and capable of moving along arc trajectories of the arc surfaces in the length directions, and damping parts connected to two ends of the width direction of the base by the mass blocks, wherein the surfaces, far from the base, of the guide parts are the arc surfaces; the arc surfaces are recessed facing the base; and each damping part is supported on the base, and can absorb kinetic energy during moving of the mass blocks. In the damper, the wind turbine generator system and the mounting method, the damper is low in cost and difficult to damage, achieves a better damping effect on the wind turbine generator system, and meanwhile, can guarantee the operation safety and the power generation benefit of the wind turbine generator system.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to a damper, a wind power generating set and an installation method. Background technique [0002] The tower of the wind turbine is the supporting structure of the wind turbine, and its structural safety and stability are related to the safety and performance of the wind turbine. As the capacity of wind turbines increases, the height of the tower continues to increase, and the frequency of the tower continues to decrease, the problem of tower vibration will become more and more prominent. In order to ensure the safe and smooth operation of the tower and the whole machine, it is necessary to install a damper on the wind turbine. [0003] However, after the damper in the prior art works for a period of time, the spring system used to realize the frequency characteristics of the damper is prone to failure after long-term operation, resulting in a mismatch between the frequency of t...

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Problems solved by technology

[0003] However, after the damper in the prior art works for a period of time, the spring system used to realize the frequency characteristics of the damper is prone to failure after long-term operation, resulting in a mismatch between the frequency of the damper and the frequency of the tower, which in turn makes it less effective for wind power generation. The damping effect of the unit is extremely reduced, which not only increases the maintenance cost of the damper, but more importantly, due to the reduction of the vibration reduction effect of the damper, the vibration frequency of the wind turbine increases, which affects the operation safety and power generation of the wind turbine. benefit

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