Blade weight counterbalance test system of aerogenerator

A technology for wind turbines and testing systems, which is applied in the testing of machine/structural components, static/dynamic balance testing, measuring devices, etc. Fast, high test accuracy, simple operation effect

Active Publication Date: 2009-01-14
DONGFANG TURBINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the weighing is manually read, and there are inevitably reading errors; t

Method used

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  • Blade weight counterbalance test system of aerogenerator
  • Blade weight counterbalance test system of aerogenerator
  • Blade weight counterbalance test system of aerogenerator

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example one

[0021] See figure 1 : This wind turbine blade counterweight test system mainly includes three parts, one is a weighing device, the other is a weight signal transmission device, and the third is a weight signal processing device.

[0022] The weighing device is composed of 2 sets of electronic crane scales 1. The electronic crane scale 1 uses OCS-10Hg-XS wireless data transmission electronic crane scale, according to figure 1 As shown, a two-point weighing is performed to convert the weight signal of the blade into a digital electrical signal. See Figure 3 for weighing principle.

[0023] figure 2 Middle: A and B are the lifting positions of #1 and #2 electronic crane scales, L 1 , L 2 Are the distances from A and B to the connecting flange, L is the distance from the center of gravity of the blade to the connecting flange, W 1 , W 2 Is the weight measured by the two crane scales, where W 1 , W 2 , L 1 , L 2 Is a known parameter, L is an unknown parameter, s...

Example Embodiment

[0044] Example two

[0045] The electronic crane scale 1 uses a common digital electronic crane scale, which has no wireless transmission function and is directly connected to the computer with a signal cable. The rest is the same as Example 1.

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Abstract

The invention discloses a balance weight testing system of vanes of a windmill generator and comprises an electronic digital two-point crane scale, a signal cable and a computer; the electronic crane scale converts weight signals of the vanes into electric digital signals that are sent into the computer by the signal cable, the computer processes the electric digital signals and displays processed results; the computer comprises the following components: a storing module that is used for storing parametric setting values of weight, gravity center and static moment of the vanes, a mathematical model for computing the weight, gravity center and static moment of the vanes, weighing results, grouping suggestions and added weight values and parts; a data acquisition module that is used for collecting data from the signal cable in real time; a computing module that is used for computing actual weight, gravity center, static moment, added weight values and parts of the vanes; a deciding module that is used for comparing the actual weight, gravity center and static moment of the vanes with the setting values, deciding whether the vanes are qualified, and posting the grouping or the weight adding suggestions; a display module that is used for displaying the actual weight, gravity center position and static moment of the vanes, the decided results, the grouping suggestions, and the added weight value and parts.

Description

technical field [0001] The invention relates to a blade of a wind power generator, in particular to the blade counterweight testing system. Background technique [0002] The size of the wind turbine blades is very large. In order to ensure the moment balance of each blade when the unit is running, the geometric shape, size and weight of each blade of the wind wheel should be consistent. However, in the process of blade processing, there are inevitably errors. Generally speaking, the length, width, and torsion angle of the blade profile are relatively easy to control, and the errors can usually meet the design requirements. However, the thickness control is difficult and the error is large, resulting in The parameters such as weight, center of gravity and static moment are inconsistent. Therefore, when a wind turbine manufacturer assembles a wind rotor, it is necessary to perform a counterweight test on the blades to screen out a group (three) of blades whose static torque r...

Claims

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Application Information

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IPC IPC(8): G01G19/14G01M1/12
Inventor 何东杨长柱
Owner DONGFANG TURBINE CO LTD
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