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Spoiler, fan tower and wind driven generator comprising same

A technology of wind turbines and spoilers, which is applied in the direction of wind turbines, wind power generation, installation/supporting configuration of wind turbines, etc. It can solve the problems that the vortex-induced vibration of the tower cannot be suppressed, and achieve simple structure and suppression of vortex-induced vibration , The effect of low manufacturing cost

Pending Publication Date: 2019-05-10
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the unit is powered on, the vortex-induced vibration can be suppressed by actively yawing against the wind to destroy the flow field, but once the unit is powered off, the unit can no longer be yawed against the wind, and the vortex-induced vibration of the tower can no longer be suppressed

Method used

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  • Spoiler, fan tower and wind driven generator comprising same
  • Spoiler, fan tower and wind driven generator comprising same
  • Spoiler, fan tower and wind driven generator comprising same

Examples

Experimental program
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Effect test

Embodiment 1

[0069] Such as figure 1 As shown, the present invention provides a spoiler, including a spoiler 1 and a connecting part 2, the spoiler 1 includes a broken flow end and a plurality of side surfaces, the broken flow end is directly connected with multiple sides to form a polyhedron, and the broken flow end Located at the front end of the spoiler. The broken flow end is used to separate the fluid, and the separated fluid is divided along the side, thereby changing the flow direction of the fluid and avoiding the phenomenon of vortex induced vibration. The connection part 2 is an annular connection part.

[0070] In order to achieve the purpose of reducing vortex-induced vibration, the spoiler of the present invention can be installed in place before the hoisting of the wind turbine tower. The generation of vortex-induced vibration of the tower is suppressed in the life cycle, and no maintenance is required in the whole life cycle of the wind turbine, and the use cost is low.

...

Embodiment 2

[0075] Such as image 3 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, the difference being:

[0076] In this solution, the connecting portion 2 is designed as a connecting plate 21 . Flanges 22 are provided at both ends of the connecting plate 21, and bolt holes are pre-drilled in the flanges 22, and the flanges 22 are connected together by bolt assemblies, thereby forming a ring shape. This solution avoids damage to the paint on the outer surface of the installation body during the installation of the spoiler.

Embodiment 3

[0078] Such as Figure 4 As shown, the structure of this embodiment is basically the same as that of Embodiment 2, the difference being:

[0079] In this solution, the connection part 2 connects three connection plates 21 together in sequence, and the three connection plates 21 are connected head to tail to form a ring shape, and a spoiler 1 is provided on the outside of each connection plate 21 .

[0080] As an alternative solution, the number of connecting plates 21 in this solution can also be increased or decreased according to the actual situation, and a plurality of spoilers 1 can also be arranged on the outside of each connecting plate 21 .

[0081] As a preferred solution, the spoiler 1 and the connecting portion 2 can also be connected together by welding. This solution improves the firmness of the connection between the spoiler 1 and the connecting part 2, avoids the accidental falling off of the spoiler 1, improves the life of the spoiler, and reduces the use cost ...

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Abstract

The invention discloses a spoiler, a fan tower and a wind driven generator comprising the same. The spoiler comprises a spoiling part and a connecting part; the spoiling part comprises a spoiling endand multiple side surfaces; the spoiling end and the multiple side surfaces are connected to form a polyhedron; the spoiling end is positioned at the front end of the spoiler; the connecting part is an annular connecting part; and the spoiling part is arranged on the outer side of the annular connecting part. In the spoiler, the fan tower and the wind driven generator comprising the same, the spoiler consisting of the annular connecting part and the spoiling part is simple in structure, low in production cost and convenient to mount in a needed place. The spoiler is mounted before tower lifting of the wind driven generator, has the same design life with a tower main body, can inhibit the vortex-induced vibration of the tower in the whole life period of the wind driven generator, has no need to be maintained in the whole life period of the wind driven generator, and is low in use cost.

Description

technical field [0001] The invention relates to the technical field of vortex-induced vibration avoidance, in particular to a spoiler, a wind turbine tower and a wind power generator including the same. Background technique [0002] A wind generator, also called a fan, is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate, and finally outputs alternating current. Fans include towers, blades and generator sets. Most of the towers equipped with wind turbines have a circular cross-section. When the wind passes through the surface of the tower, vortex-induced vibration is very easy to occur, especially when the tower is hoisted and the unit is powered off. [0003] The vortex-induced vibration of the tower is a kind of resonance phenomenon, which has great harm to the tower and the whole unit. Once it occurs, it will not only cause serious fatigue damage to the tower and its connecting fasteners, but also threaten the integrity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/20F03D80/00
CPCY02E10/728Y02E10/72Y02P70/50
Inventor 曹广启赵大文王康世张友林
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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