Experimental device used for thermal fatigue of turbine blade material

Abstract

The invention discloses an experimental device used for the thermal fatigue of a turbine blade material. The device comprises an experiment test bench, an induction coil heating system, a temperaturetesting and collecting system, a cooling system and an experiment control platform, wherein the induction coil heating system, the temperature testing and collecting system, the cooling system and theexperiment control platform are independently connected with the experiment test bench; a specimen is fixed on a fixture; cooling gas passes through a first cooling gas channel and a second cooling gas channel to cool the surface, the end part and the inner side of the specimen; a thermocouple is independently arranged on a position with a surface radius of 3.5mm, a position with a surface radiusof 6.5mm, a position with a surface radius of 8.5mm and a specimen inner ring; the thermocouple is connected with a temperature display instrument and a computer host; and the inner ring of the induction coil is provided with an induction coil cooling water channel, cooling water flows in from one side of the induction coil and flows out from the other side. The device has the advantages that thermal fatigue working environment, where the turbine blade is positioned, with alternating circulation under different working states can be simulated, and in addition, important experiment data can beprovided for the thermal fatigue failure mechanism and the reliability of the turbine blade material.

Description

technical field [0001] The invention relates to the field of high-temperature component detection equipment, in particular to an experimental device for thermal fatigue of turbine blade materials. Background technique [0002] In recent years, due to the urgent need for the development of aerospace materials, the traditional thermal fatigue test methods and test conditions are simple and provide little information, which cannot meet the growing needs of modern scientific research. The problem of thermal damage to materials caused by high heat load has become increasingly prominent, which has attracted great attention from research institutions in various countries, and established corresponding heating methods based on laser heating, quartz lamps, high-temperature radiation, resistance heaters, and high-temperature combustion gas. Experimental platform for thermal fatigue experimental research. Although these methods can simulate the experimental environment with high heat ...

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Problems solved by technology

Although these methods can simulate the experimental environment with high heat load, they consume a lot of manpower and material resources, require high experimental equipment, and lack or cannot obtain the key information of the sample in real time; in addition, due to the limitation of the heating method, many test devices cannot To achieve a rapidly changing thermal load environment, how to economically and effectively characterize the thermal fatigue failure behavior of high-temperature components through the design of relevant test devices and simulation tests will be a realistic engineering problem that researchers directly face

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