Eddy generator, wind turbine blade with eddy generator and installation method of eddy generator

A vortex generator and wind turbine blade technology, applied in the field of wind power, can solve the problems of inaccurate installation position of the vortex generator and poor effect of the vortex generator, and achieve accurate and reliable installation and positioning process, high installation efficiency, and reduced aerodynamic noise. Effect

Pending Publication Date: 2019-02-26
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the patent CN103917445B, "discolored soot particles, dust, suspended particles, etc. are used to form deposits on the blades to identify the separation area of ​​the blade airflow, and the installation position of the vortex generator is determined according to the separation area." According to the test results, the vortex occurs The installation position of the vortex generator is not near the separation line. The installation position of the vortex generator determined by this method is not accurate enough and the effect of the vortex generator is not good. The installation position of the vortex generator should be determined according to the aerodynamic shape of the wind wheel

Method used

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  • Eddy generator, wind turbine blade with eddy generator and installation method of eddy generator
  • Eddy generator, wind turbine blade with eddy generator and installation method of eddy generator
  • Eddy generator, wind turbine blade with eddy generator and installation method of eddy generator

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Such as image 3 As shown, the traditional vortex generator fins 22 can be obtained based on bionic simplification, where 19 is the leading edge of the fin (the windward side of the fin), 20 is the top of the fin, and 21 is the trailing edge of the fin (the leeward side of the fin). Considering the convenience of processing technology and structural reliability, the fins are deformed into 23. According to the patent documents of the prior art, the shapes of existing vortex generator fins are shown in 24, 25, 26 and 27. Considering the reduction of resistance and the convenience of production, this embodiment provides a vortex generator and a wind turbine blade with a vortex generator, wherein the shape of the fins of the vortex generator is as follows: Figure 4 As shown, the top corners of the fins 28 are made into a circular arc shape to reduce the partial separation of the airflow and reduce the resistance.

[0077] In this embodiment, the profile of the airfoil use...

Embodiment 2

[0090] This embodiment provides a method for installing the vortex generator of the blade that has not been installed and operated.

[0091] Installation preparation: the installation environment temperature is required to be above 5°C, the higher the temperature, the better the bonding effect of the adhesive; the preparation is as follows Figure 18 The chordwise positioning clip 76 of the vortex generator shown in the figure requires that the material of the clip 76 is aluminum in terms of strength and light weight, and 77 is the positioning position of the trailing edge of the airfoil. Note that a 10-20 mm height increase is appropriately reserved for positioning 77 of the trailing edge Positioning reliability; water-based marker pen, 800-grit sandpaper, 50m long tape measure, powder or ink fountain marker, industrial alcohol.

[0092] Installation process:

[0093] 1) Properly adjust the position of the blade so that the suction surface of the blade (corresponding to the ...

Embodiment 3

[0102] This embodiment provides a method for installing a vortex generator on an installed wind turbine blade.

[0103] Installation preparation: a set of maintenance platform or hanging basket system, safety belts, safety ropes and safety helmets for high-altitude operations, walkie-talkies; chord-direction positioning clamps for vortex generators; water-based markers, 800-grit sandpaper, 50m long tape measure, powder bucket Or ink fountain scriber, industrial alcohol; the ambient temperature is higher than 8 ℃, the wind speed of the wind field should be less than 8 m / s, and the installation work cannot be carried out in rainy, foggy and other poor visibility weather.

[0104] Installation process:

[0105] 1) Lock the impeller and confirm with the team members, and monitor that everything is normal, the engine room maintenance has been opened, the emergency stop has been photographed, and the yaw has been closed;

[0106] 2) Delineate the safety range of on-site constructio...

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PUM

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Abstract

The invention relates to an eddy generator for a wind turbine blade. The eddy generator comprises multiple fins, and each fin is a triangular plate part with a circular corner as a top corner. According to the eddy generator, stalling can be effectively delayed, the pneumatic performance of the blade is improved, the situation can be reduced that the power generation loss of a wind turbine is caused by blade surface pollution, and the eddy generator can be applied to power increase transformation of the wind turbine blade which is operated. The invention further relates to a method for determining the mounting position of the eddy generator on the wind turbine blade and a method for installing the eddy generator on the wind turbine blade. According to the methods, the mounting and positioning process is precise and reliable, and the mounting efficiency is high.

Description

technical field [0001] The invention relates to the field of wind power, in particular to a vortex generator capable of improving the aerodynamic performance of a wind turbine blade and its overall solution. Background technique [0002] The individual power capacity requirements of large modern wind turbines continue to increase, especially in terms of rotor swept area. The larger the swept area of ​​the wind rotor, the lower the applicable wind speed of the wind turbine, and the higher the power generation at low wind speed, but the corresponding size of the entire wind turbine and different components of the wind turbine is larger. How to increase the wind energy absorption rate of blades is a key issue to improve the core competitiveness of wind turbines. [0003] The current common wind turbine structure is as follows: figure 1 As shown, it includes a tower frame 7 and a hub nacelle 4, and the tower frame and the ground are fixed through a foundation 8. The blades 9 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D7/02
CPCF03D1/0633F03D1/0675F03D7/022F03D7/0256F03D7/0296F03D13/10Y02E10/72
Inventor 王德超王海洋
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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