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Tower frame vibration damping device and tower frame comprising same

A vibration damping device and tower technology, applied in the installation/supporting configuration of wind turbines, springs/shock absorbers, vibration suppression adjustment, etc., can solve the problem that turbulence or damping devices cannot suppress the random vibration of tower vortex-induced vibration at the same time , Control the limited power control of the unit, the large space occupied by the cable, etc., to achieve the effect of high construction feasibility, small occupied space, and economical cost

Pending Publication Date: 2019-03-08
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the limitation of power control in the prior art by using the control unit, and only using one kind of turbulence or damping device cannot suppress the vortex-induced vibration of the tower and the random vibration caused by the fluctuating wind load at the same time , or citing the defects that the cable takes up a lot of space, the project implementation is difficult, and it is not economical and practical, a tower vibration damping device and a tower including it are provided

Method used

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  • Tower frame vibration damping device and tower frame comprising same
  • Tower frame vibration damping device and tower frame comprising same
  • Tower frame vibration damping device and tower frame comprising same

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 and figure 2 As shown, the present invention provides a vibration damping device for a tower, which includes a support system 1 . The support system 1 includes a support rod 11 and a connecting block 12 . The connecting block 12 is fixedly welded to one end of the support rod 11 . The support system 1 also includes a diagonal brace 13, and the use of the diagonal brace 13 can make the structure of the entire support system 1 stronger. One end of the diagonal strut 13 is fixedly welded with a connecting block 12 , and the other end of the diagonal strut 13 is fixedly welded to a position in the middle of the support rod 11 . As an alternative, other fixed connections can also be used. The tower vibration damping device also includes a cable 2, a damper module 3, and an anchor pile system 5, and the support system 1, the cable 2, the damper module 3, and the anchor pile system 5 are connected in sequence.

[0047] Such as image 3 As shown, the dampe...

Embodiment 2

[0052] Such as Figure 6 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference being that: the support system 1 further includes a pulley 14 fixed to one end of the support rod 11 . One end of the cable 2 is bound to the tower 6 , then goes around the pulley 14 , and the other end is connected to the first connecting rod 32 at the other end of the damper module 3 . Adding a pulley 14 at one end of the support rod 11 can avoid the friction between the stay cable 2 and the support rod 11, and the stay cable 2 itself will be deformed due to tension, and the use of the pulley 14 makes the deformation of the stay cable 2 unconstrained , so as to better achieve the effect of suppressing tower vibration.

Embodiment 3

[0054] Such as Figure 4 and Figure 7As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference is that the tower vibration damping device also includes an elastic system 4 . That is, in order to adjust the natural frequency of the entire tower vibration damping device and avoid resonance between the tower vibration damping device and the tower 6 , an elastic system 4 is installed between the damper module 3 and the anchor pile system 5 . The elastic system 4 includes a spring 41 , a barrel 42 , a movable link 43 and a fixed link 44 . The spring 41 is located inside the cylinder 42 , one end of the spring 41 is fixed on the movable connecting rod 43 , the other end of the spring 41 is fixed on the top of the inner wall of the cylinder 42 , and the fixed connecting rod 44 is welded on the top of the outside of the cylinder 42 . In order to achieve a better effect of avoiding resonance between the tower vibration damping device an...

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Abstract

The invention provides a tower frame vibration damping device and a tower frame comprising the tower frame vibration damping device. The tower frame vibration damping device comprises a supporting system, wherein the supporting system comprises a supporting rod and a first connecting block, the supporting rod is fixed on the surface of a tower frame through the first connecting block; the tower frame vibration damping device further comprises a pull rope, a damper module and an anchor pile system fixed on the ground, wherein the supporting system, the pull rope, the damper module and the anchor pile system are connected in sequence. According to the tower frame vibration damping device and the tower frame comprising the tower frame vibration damping device, the supporting system, the pullrope, the damper module and the elastic system are combined to use, so that the effects of jointly restraining the vortex-induced vibration and the random vibration of the tower frame are achieved, meanwhile, the stability of a wind turbine is improved by the horizontal and vertical tension provided by the pull rope, and the whole device is small in occupied space, practical in structure, low in cost and high in construction feasibility.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a tower vibration damping device and a tower including the same. Background technique [0002] With the development of the wind power industry, the towers used in the wind power industry are getting higher and higher. Correspondingly, the flexibility of the tower increases, and the natural frequency of the whole machine decreases, which leads to an increase in the probability of vortex-induced vibration of the tower under the state of the whole machine. In addition, due to the increase in the power of a single wind turbine, the diameter of the impeller is also increasing. The increase in the diameter of the impeller will increase the random fluctuating wind load on the fan. This random wind load will also cause the tower to appear Significant vibration problems, which have a bad influence on the structural strength and fatigue strength of tall and flexible towers. Therefore...

Claims

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Application Information

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IPC IPC(8): F03D13/20F03D80/00F16F15/023F16F15/03F16F15/04
CPCF03D13/22F03D80/00F16F15/023F16F15/03F16F15/04Y02E10/728Y02E10/72
Inventor 宋磊建曹广启王宁庞文彦
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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