Rotary heat transfer experiment system and method for turbine blade cooling performance test

Abstract

The invention discloses a rotary heat transfer experiment system and method for a turbine blade cooling performance test. The system comprises a static air supply system, a rotary experiment test platform and a control system; the static air supply system comprises an air pump, a steady flow tank, a temperature control device, a three-way solenoid valve, a flow meter and a pressure gauge; the rotary experiment test platform comprises a motor, a rotating speed sensor, a speed change gear box, a supporting gantry, a circular experiment table, an experiment test section and a high-speed thermal imaging system; the high-speed thermal imaging system comprises a high-speed thermal imaging device and an image processing computer; the control system is connected with the temperature control device, the flow meter, the pressure gauge, the rotating speed sensor, the air pump, the motor and the high-speed thermal imaging system; and by adopting the method disclosed by the invention, an experiment research can be performed on the heat transfer performance of an internal cooling passage of a turbine blade in a rotary state, and the heat transfer data of four different structure working conditions can be tested at the same time, thereby improving the test efficiency and shortening the test time while obtaining experimental data with higher precision.

Description

technical field [0001] The invention belongs to the field of turbine blade cooling, in particular to a rotating heat transfer experimental system and method for testing the cooling performance of turbine blades. Background technique [0002] Due to the advantages of compactness, high efficiency and flexibility, gas turbine devices are widely used in various industries such as chemical industry and energy. As one of the core components of gas turbines, turbine blades are particularly important to ensure their safe and reliable operation. At present, the turbine inlet temperature of advanced gas turbines far exceeds the allowable temperature of the material, and it is constantly impacted by unsteady airflow during operation, and the working environment is very harsh. In order to ensure the normal operation of the blades, various cooling channels are usually arranged inside the blades to reduce leaf temperature. [0003] Obtaining the heat transfer performance in different bla...

AI Technical Summary

Problems solved by technology

However, most of the conventional heat transfer experimental systems study the heat transfer performance of the internal cooling channel under static conditions, but the rotation effect of the moving blade has a significant impact on the flow and heat transfer performance, which cannot be ignored in actual operation, so , in order to better simulate the real working environment of the blade, it is necessary to conduct heat transfer experiments on the internal cooling channels of the turbine blades under rotating conditions, which puts forward higher requirements for the design, processing and testing of the heat transfer experimental system

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