A salt spray dynamic thermal corrosion test bench for blade specimens based on micro gas turbines

By designing a blade test piece based on a micro gas turbine, the problem that the existing technology cannot apply load on the blades in high temperature environments is solved, and the accurate test of the blades' corrosion resistance quality in the high temperature salt spray environment and under stressed states is achieved, which improves the stability of the experimental environment and reduces the experimental cost.

CN114858691BActive Publication Date: 2025-04-04HARBIN ENG UNIV
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Patent Information

Application Number
CN202210384015.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-04-12
Publication Date
2025-04-04
Estimated Expiration
2042-04-12

AI Technical Summary

Technical Problem

The existing high-temperature salt spray test device cannot apply load on the blades under high temperature environment, and cannot accurately test the blades' salt spray corrosion resistance in high-temperature salt spray environment and under stress conditions.

Method used

A blade specimen salt spray dynamic thermal corrosion test bench based on micro gas turbines was designed, including a micro gas turbine, a blade test section and a exhaust gas discharge section. The blade test section includes a gas salt spray mixing pipeline, a salt water supply pipeline, a blade specimen loading table, and the test blade specimen is loaded, and the actual working conditions are simulated through the motor drive rotation.

Benefits of technology

The experimental bench can simulate the real blade working condition in a high temperature environment, study the blade's dynamic thermal corrosion at high temperature and high speed, improve the stability of the experimental environment, and facilitate multiple experiments, reduce the experimental cost, and obtain relevant laws and conclusions under dynamic thermal corrosion of the blade.

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Abstract

The object of the present invention is to provide a blade specimen salt spray dynamic thermal corrosion test bench based on a micro gas turbine, comprising a micro gas turbine, a blade test section and an exhaust gas discharge section connected in sequence, wherein the blade test section comprises a gas-salt spray mixing pipeline, a salt water supply pipeline and a blade specimen loading platform, wherein the gas-salt spray mixing pipeline is located behind the micro gas turbine, the salt water supply pipeline is located outside the gas-salt spray mixing pipeline, and a salt spray filter device and a salt spray nozzle are respectively installed thereon, the salt spray filter device is located outside the gas-salt spray mixing pipeline, the salt spray nozzle is located inside the gas-salt spray mixing pipeline, and the blade specimen loading platform is located inside the gas-salt spray mixing pipeline, and a test blade specimen is installed thereon. This test bench can simulate the actual blade working condition to the maximum extent, and the test blade specimen is located downstream of the micro gas turbine, so as to avoid the corrosion of the blade causing the change of the working condition of the gas turbine, thereby improving the stability of the experimental environment.
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