A tower structure vibration damping device of a high flexible tower wind power generating set

Abstract

The present invention provides a tower structure damping device for a high flexible tower wind power generating set, which includes a slide rail, a spring-mass power system, a slide connection structure and an elastic connection structure, wherein the slide rail is provided with multiple, multiple The slide rails are arranged on the outer wall of the tower along the axial direction of the tower; the slide rails placed in the middle are slidably connected with a spring-mass block power system; each of the remaining slide rails is slidably connected with a sliding connection structure; The elastic connection structure is used to sequentially connect the mass blocks and the sliding connection structure arranged on adjacent slide rails; the structural vibration damping device involved in the present invention can absorb the vibration energy of the second-order natural frequency of the tower tube of the wind power generating set to form a dissipated , and can destroy the excitation conditions of the relevant towers, and play the role of reducing the vibration of the tower structure of the high-soft tower wind turbine; the device is simple in design, manufacture, and installation, low in cost, light in weight, and has little impact on the safety of the tower itself .

Description

technical field [0001] The invention belongs to the vibration reduction of the tower tube structure of the wind power generating set, in particular to a tower structure damping device of the high flexible tower wind power generating set. Background technique [0002] With the development trend of large-scale single-unit capacity of horizontal-axis wind turbines, in order to capture better wind energy resources and increase power generation, increasing the height of the tower is one of the feasible options. At the same time, in order to reduce costs, the lightweight technology of unit components has made significant progress, and the weight and stiffness of the tower tube have decreased accordingly. Due to the comprehensive influence of various aspects, the natural frequency of the tower tube has shown a downward trend. According to the principle of flow around a cylinder in hydrodynamics, the cylinder is located in the flow field, and at a certain incoming flow velocity, its...

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Problems solved by technology

The advantages are easy manufacturing, cost saving, and simple installation. The disadvantages are: (1) The dynamic characteristics of the tower platform are not considered in the design, and the tuned mass damper may not be placed where it is most conducive to absorbing the "twisting waist" vibration. (2) Occupying the internal space of the tower, which affects the operation and maintenance personnel's work; (3) The internal structure of the damper is complex, which is not conducive to the fine modeling of the tower as a whole and the quantitative evaluation of the vibration reduction effect

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