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Optical pressure sensitive coating gauging pressure accuracy enhancing method

A technology of pressure and paint, applied in the field of pressure measurement, can solve the problems of low precision and cumbersome work, and achieve the effect of eliminating reference errors, solving the effect of errors affecting the accuracy of experimental measurement, and eliminating the effect of errors affecting the accuracy of experimental measurement

Inactive Publication Date: 2008-10-22
NORTHWESTERN POLYTECHNICAL UNIV
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AI Technical Summary

Problems solved by technology

[0015] In order to overcome the shortcomings of low precision and tedious work in the prior art, the present invention provides a method for improving the accuracy of measuring pressure with optical pressure sensitive paint, which can further improve the accuracy of pressure measurement using optical pressure sensitive paint

Method used

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  • Optical pressure sensitive coating gauging pressure accuracy enhancing method
  • Optical pressure sensitive coating gauging pressure accuracy enhancing method
  • Optical pressure sensitive coating gauging pressure accuracy enhancing method

Examples

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Embodiment Construction

[0030] Example of method implementation: Applying optical pressure-sensitive paint to the pressure measurement of the suction surface of the isolated straight blade at the outlet of the transonic cascade wind tunnel.

[0031] The experimental measurement equipment and facilities consist of a transonic cascade wind tunnel, straight blades coated with domestic optical pressure-sensitive paint, and an optical pressure-sensitive paint measurement system. The suction surface of the rectified straight blade of the compressor is used as the pressure measurement surface, and the domestic fluorescent optical pressure sensitive paint is sprayed as the pressure sensor. Sensitive optical pressure sensitive paint. Fix the selected isolated blade at the outlet of the transonic cascade wind tunnel.

[0032] 1. Pre-design and layout of the experiment. In order to ensure the illumination of the excitation light on the surface of the paint layer and facilitate the digital imaging equipment to o...

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Abstract

The invention discloses a method for improving the accurate pressure measurement by optical pressure sensitive material. The method comprises the following steps that: the design and arrangement for carrying out experiment measurement are preset; the optical pressure sensitive material is painted on the surface of an experimental model; the experiment arrangement and preparation are carried out; the preoperation of a measuring system and an experimental facility are carried out, then the experiment measurement is actualized; after the paint calibration, the model is corrected; finally, the pressure distribution of the model surface is acquired. The method can radically eliminate and solve the problem that error caused by local atmosphere pressure influences the precision of the experiment measurement.

Description

technical field [0001] The invention belongs to pressure measurement technology. Background technique [0002] Optical pressure-sensitive paint measurement technology is a new concept of flow field pressure measurement technology developed in the 1980s. It is different from traditional pressure measurement. Quenching" effect to measure the aerodynamic pressure on the surface of the object in the flow field. [0003] Optical pressure-sensitive coatings are mixtures of various polymers, including photosensitive molecules with photoluminescence and oxygen quenching properties, colloid solutions for immobilizing photosensitive molecules, and solvents that facilitate the uniform mixing of various polymers. After the polymer components that make up the optical pressure-sensitive coating are mixed, the additive is covered on the surface of the object to be tested by spraying through an air pressure spray gun. The coating layer completes the volatilization and curing of solvent sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L11/02
Inventor 刘波周强郑立新赵旭民
Owner NORTHWESTERN POLYTECHNICAL UNIV
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