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Full-size quick blade detection method and equipment

A full-scale, blade-based technology, applied to measuring devices, instruments, optical devices, etc., can solve problems such as inability to obtain information, large human errors, and long measurement time, so as to achieve accurate data, improve accuracy and efficiency, and avoid adverse effects Effect

Inactive Publication Date: 2012-11-07
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second purpose of the present invention is to overcome the shortcomings of the standard template and contact measurement for blades in the prior art, which have the disadvantages of long measurement time, large human error, low efficiency, and inability to obtain more information, and provide a blade Full-scale rapid detection equipment in the manufacturing process

Method used

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  • Full-size quick blade detection method and equipment
  • Full-size quick blade detection method and equipment
  • Full-size quick blade detection method and equipment

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Embodiment Construction

[0021] as attached figure 1 As shown, a method for rapid full-scale detection of blades in this embodiment is based on a three-dimensional optical measurement system and surface structured light projection profilometry to detect blades, and the optical three-dimensional scanning measurement head projects a sinusoidal stripe surface structure to the surface of the measured blade Light, use the heterodyne multi-frequency phase shift method to solve and expand the phase, take the phase as the constraint condition of image matching, use the limit constraint relationship in binocular stereo vision to obtain the three-dimensional point cloud data of the blade surface, and realize the optical measurement of the blade surface , due to the complex shape of the blade, it is difficult to obtain complete data in a single measurement, so multiple measurements are required to obtain the measurement results of the entire blade by splicing. The detection method comprises the following steps: ...

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Abstract

The invention provides a full-size quick blade detection method and equipment, aiming at overcoming the defects of low blade measurement efficiency, insufficient obtained information amount and the like in the prior art. The full-size quick blade detection method mainly comprises the following steps of: building an original model of a blade support and a basic coordinate system; installing a blade to be detected on the blade support; measuring the blade support and the blade, and loading the measured data into the original model to complete single measurement; splicing measuring results in the basic coordinate system; and judging whether the results are complete, if so, optimizing the measuring results, and if not, returning to single measurement. The full-size quick blade detection equipment comprises a blade support and a two-axis turntable, wherein the blade support comprises a frame mark point support and a blade fixture; and the frame mark point support and the blade fixture are respectively connected with the two-axis turntable fixedly. The method and the equipment improve the measurement efficiency and accuracy of the blade and are suitable for the full-size measurement environment after detection and manufacture in the blade manufacturing engineering.

Description

technical field [0001] The invention relates to a blade detection method and equipment, in particular to a blade full-scale rapid detection method and equipment. Background technique [0002] The blade is one of the key parts of the turbine generator. In the power generation equipment, the blade is the core element of energy conversion. Together with the three-dimensional complex impeller, it is called the "heart" of the power generation equipment. The quality of blade design and manufacture directly determines the performance, safety and life of turbomachinery equipment, and its quality has a significant impact on the performance of turbomachinery. Due to the harsh working environment of blades, the failure rate of blades is relatively high, whether it is the development process or the turbomachinery used in service. There are many factors that affect the quality of the blade, including the geometry of the blade, surface roughness, etc. Due to the continuous development o...

Claims

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Application Information

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IPC IPC(8): G01B11/25
Inventor 赵灿何万涛陈富梁永波姚青文杨松华孟祥林程俊廷刘锦辉肖胜兵
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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