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Gravity energy storage type wind power generation tower with segmented supporting mechanism

A technology of gravity energy storage and segmental support, which is applied in the direction of wind turbines storing gravitational potential energy, installation/support of wind turbines, wind power generation, etc. It can solve the problems of increasing tower height, reducing tower rigidity, and tower resonance etc. to achieve the effect of reducing energy loss, improving stiffness and improving overall stability

Pending Publication Date: 2022-08-02
廖生学
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the third aspect, increasing the height of the tower (resulting in a decrease in the stiffness of the tower) will cause the first-order natural frequency of the tower to drop and then cross the first-order frequency of the wind wheel rotation of the unit, resulting in resonance in the tower

Method used

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  • Gravity energy storage type wind power generation tower with segmented supporting mechanism
  • Gravity energy storage type wind power generation tower with segmented supporting mechanism
  • Gravity energy storage type wind power generation tower with segmented supporting mechanism

Examples

Experimental program
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Effect test

Embodiment 1

[0039] like figure 1 As shown, the tower of this embodiment includes a top wind turbine 100, a wind turbine tower 1, a tower 40, a foundation cap 13, a pit 50, a counterweight 7, a cable roller 6, a steel wire 3, a hoist The motor, the tower 40 is a conventional truss, and the lower end of the truss 40 is fixed on the foundation cap 13 . A plurality of pile foundations 14 are arranged under the foundation cap 13, and the pile foundations 14 are embedded in the underground soil layer. In order to improve the stability of the truss under the tower 1, a pit 50 is centrally arranged below the tower 40, and a plurality of wire ropes 3 retracted by a cable roller 6 are centrally arranged at the upper end of the tower 40. The lower layers are stacked with n counterweight blocks 7 . The counterweight 7 is constructed with a hollow channel that runs through the upper and lower end faces. The cable drum 6 can be driven and rotated by a hoisting motor. The hoisting motor is set as a g...

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Abstract

The gravity energy storage type wind power generation tower comprises a wind generating set, a tower drum, a tower body, a foundation bearing platform, a pit, a balancing weight, a cable roller, a steel wire rope and a hoisting motor, the tower body is placed on the foundation bearing platform, the tower drum is placed at the upper end of the tower body, the wind generating set is installed on the tower drum, and the tower drum is installed on the foundation bearing platform. The hoisting motor is a generator motor, the generator motor consumes electric energy when driving the balancing weight to ascend, and the generator motor converts the consumed electric energy into gravitational potential energy of the balancing weight; when the balancing weight descends under the action of gravity, the generator motor is driven to generate electric energy, so that storage and release of the electric energy are realized. When the balancing weight is lifted, downward pulling force is applied to the upper end of the tower, the gravity center of the tower moves downwards, the structural frequency of the tower with the gravity center moving downwards can be increased, the lateral displacement amplitude of the tower top can be reduced, the wind resistance of the tower can be improved, and the wind turbine generator can continue to operate at the high wind speed.

Description

technical field [0001] The invention relates to the field of fan tower foundations, in particular to a gravity energy storage type wind power generation tower provided with a segmented support mechanism. Background technique [0002] like Figure 4 The variation of wind speed with height under different wind shear conditions is given. It can be seen that under high shear conditions, with the increase of height, the increase of wind speed is very obvious. In large areas, by increasing the height of the tower, more wind energy can be captured, thereby more effectively increasing the power generation of the unit and improving the economic index of the unit. However, according to the conclusion of Liu Yixiong et al.'s paper "Structural Dynamics and Stability Analysis of Large Wind Turbine Tower", buckling is the main failure form of the structure when the tower is towering, and the buckling strength will increase with the ratio of shell diameter to thickness. It drops sharply, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/20F03D9/16F03D9/25F03D7/00F03D80/00
CPCF03D13/20F03D13/22F03D9/16F03D9/25F03D7/00F03D80/00Y02E70/30
Inventor 廖生学其他发明人请求不公开姓名
Owner 廖生学
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