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Accurate in-position mounting method of wind power generation large-elevation-angle impeller

An installation method and a technology with a large elevation angle are applied in the assembly of wind turbines and wind power generation. It can solve the problems of high risk of hoisting and installation of large and heavy objects at high altitudes, failure to meet the requirements of impeller docking, and installation difficulties, so as to achieve effective on-site technology. Decision-making, reducing the installation defense line, and improving the effect of installation speed

Active Publication Date: 2020-10-02
GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD +3
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Problems solved by technology

[0002] With the development of wind power technology, blade wind capture technology is changing with each passing day, and the structure of wind turbine tower and fuselage is increasingly optimized. Domestic wind turbine manufacturers have gradually developed semi-direct drive high-power wind turbines with large upper elevation angle; During the actual fan installation process, tools and tooling cannot meet the impeller docking requirements. The practice of the Shandong Zhanhua Wind Power Project has proved that using conventional docking technology, the impeller docking time lasts for about 5 hours. Risky installation
[0003] Therefore, with the current impeller butt joint installation method, there are technical problems such as difficult installation, long time consumption and high risk

Method used

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific examples.

[0023] This method is aimed at the rapid docking method between the main shaft and the impeller of the semi-direct drive high-angle fan, and meets the requirements of self-repair and self-maintenance during the installation and operation of wind power generation. The specific implementation process is as follows:

[0024] Step 1) Blade teaming and pitch change preparation: The three blades of the fan impeller are installed on the ground installation site into the hub of the fan impeller and the blade installation hole by using the main hoist and the auxiliary hoist. After installing a blade, use an auxiliary sling for traction to maintain the overall balance; install a 50kw generator set on the ground and the main fan as the power source for pitch change, and install a pitch module in the hub to ensure Test the pitch module and complete the pitch preparation;

[0025] Step 2)...

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Abstract

The invention discloses an accurate in-position mounting method of a wind power generation large-elevation-angle impeller. The method comprises the following steps that three paddles are mounted on ahub; according to the wind conditions and fan impeller parameters, through paddle change operation, the lower paddle is adjusted to the wind curtailment position, the stress conditions of the two paddles on the upper portion are equal, balance is kept, and no deflection happens; the fan impeller is lifted to the position in butt joint with a fan main engine through a lifting tool; secondary paddlechanging is carried out, the angles of the two paddles son the upper portion are finely adjusted, and therefore the upper elevation angle of the fan impeller conforms to that of the fan main engine;after butt joint and locating, the fan impeller and the fan main engine are connected together, and mounting is completed. By means of the method, the paddle angles can be dynamically adjusted according to instant wind speeds, so that the fan impeller does not deflect, rapid butt joint and mounting of the fan impeller and the fan main engine are achieved, and the method has the advantages of beingsimple in step, high in efficiency and high in safety.

Description

technical field [0001] The invention relates to the technical field of wind power generation equipment, in particular to a method for accurately installing an impeller with a large elevation angle for wind power generation. Background technique [0002] With the development of wind power technology, blade wind capture technology is changing with each passing day, and the structure of wind turbine tower and fuselage is increasingly optimized. Domestic wind turbine manufacturers have gradually developed semi-direct drive high-power wind turbines with large upper elevation angle; During the actual fan installation process, tools and tooling cannot meet the impeller docking requirements. The practice of the Shandong Zhanhua Wind Power Project has proved that using conventional docking technology, the impeller docking time lasts for about 5 hours. The installation is risky. [0003] Therefore, with the current impeller butt joint installation method, there are technical problems...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D13/10
CPCF03D13/10Y02E10/72
Inventor 张元海李沐林邬明材彭毅程牧春
Owner GUANGDONG NO 2 HYDROPOWER ENGINEERING COMPANY LTD
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