Blade dynamic balance evaluation method, device and system

A blade and blade angle technology, applied in the field of wind turbine evaluation, can solve problems such as difficulty in accurately extracting the dynamic imbalance of wind turbines, and achieve the effect of ensuring safety and reliability and reducing the process of manual intervention.

Active Publication Date: 2020-07-28
SANY ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a blade dynamic balance evaluation method, device and system to alleviate the technical problem that it is difficult to accurately extract the dynamic imbalance of the wind turbine

Method used

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  • Blade dynamic balance evaluation method, device and system
  • Blade dynamic balance evaluation method, device and system
  • Blade dynamic balance evaluation method, device and system

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Effect test

Embodiment 1

[0035] The embodiment of the present invention provides a blade dynamic balance evaluation method, which can be used in the main controller of the fan, and the main controller can communicate with the fan controller installed on the fan to obtain the operating parameters of the fan. Specifically, such as figure 1 A flow chart of a blade dynamic balance evaluation method shown, the method includes the following steps:

[0036] Step S102, obtaining the distance parameter between each blade of the fan and the fan tower during the operation of the fan;

[0037] Wherein, the distance parameter includes a distance parameter between the root of the blade and the tower and a distance parameter between the tip of the blade and the tower;

[0038] Specifically, the distance parameter between the blade root and the tower is the distance parameter measured by the blade root sensor that is set on the tower and close to the blade root, and the distance parameter between the blade tip and t...

Embodiment 2

[0075] On the basis of the above-mentioned embodiments, the embodiment of the present invention also provides a blade dynamic balance evaluation device, such as Figure 5 A structural schematic diagram of a blade dynamic balance evaluation device shown, the device includes:

[0076] The obtaining module 50 is used to obtain the distance parameter between each blade of the fan and the fan tower during the operation of the fan;

[0077] Wherein, the distance parameter includes the distance parameter between the blade root of the blade and the tower and the distance parameter between the tip of the blade and the tower; The measured distance parameter, the distance parameter between the blade tip and the tower is the distance parameter measured by the blade tip sensor arranged on the tower and close to the blade tip;

[0078] The drawing module 52 is used to draw the cross-sectional curve of the blade close to the tower side when the fan is running according to the speed and dist...

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Abstract

The invention provides a blade dynamic balance assessment method, device and system and relates to the technical field of fan assessment. The method comprises the steps that the distance parameter ofeach blade of a fan and a fan tower cylinder in the operation process of the fan is obtained; a section curve of one side, close to the tower cylinder, of each blade in the operation process of the fan is drawn according to the rotating speed of the fan and the distance parameter; based on the section curve, the angle parameter of each blade and the deformation amount of each blade in the operation process of the fan are calculated; and according to the angle parameter and the deformation amount, the dynamic balance assessment index in the operation process of the fan is calculated, and therefore the dynamic balance state of the blades of the fan can be assessed. According to the blade dynamic balance assessment method, device and system, in the assessment process, by means of the manner of measuring the distance parameter in a non-contact manner, manual intervention can be reduced effectively, thus the dynamic balance situation of the fan can be effectively assessed and monitored, thedynamic balance of the fan is controlled within the safety range, and safety and reliability of fan operation are ensured.

Description

technical field [0001] The invention relates to the technical field of fan evaluation, in particular to a blade dynamic balance evaluation method, device and system. Background technique [0002] With the rapid development of my country's wind power generator industry, the stock of domestic wind power generators is increasing. After the fan has been running for a long time, the initial zero position of the blade will deviate from the correct zero position of the design due to various reasons. The inconsistencies in the pitch angles between the blades lead to differences in the efficiency of wind energy captured by the blades of the fan and the wind load brought by them, thus causing the aerodynamic imbalance of the fan. At the same time, because the quality and stiffness of the blades are inconsistent, it will also lead to mass imbalance or aerodynamic imbalance of the fan. [0003] The dynamic imbalance of the fan often causes problems such as abnormal vibration of the fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor 全文贤李建涛蒋登科
Owner SANY ELECTRIC CO LTD
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