Thermodynamic coupling test device for simulating high-temperature service environment of aero-engine

Abstract

The invention discloses a thermodynamic coupling test device for simulating a high-temperature service environment of an aero-engine, and relates to the technical field of thermal barrier coating service environment experiment devices, the thermodynamic coupling test device comprises an experiment table, the experiment table is provided with a heating assembly, a cooling assembly and a force application assembly, and the force application assembly is used for fixing two ends of a workpiece and applying axial force to the workpiece; the workpiece comprises a heating surface and a cooling surface, the heating assembly is used for heating the heating surface of the workpiece, and the cooling assembly is used for cooling the cooling surface; the workpiece is fixed to the force application assembly, then the heating end of the heating assembly is aligned with the heating surface of the workpiece for heating, and the cooling end opening of the cooling assembly is aligned with the cooling surface of the workpiece for cooling, so that a temperature gradient is formed between the heating surface and the cooling surface of the workpiece, and meanwhile, the force application assembly is used for applying alternating stress to the workpiece; the service environment of an actual aero-engine can be fully simulated, and the accurate failure process of the thermal barrier coating in the high temperature gradient and alternating stress state is obtained.

Description

technical field [0001] The invention relates to the technical field of thermal barrier coating service environment experimental devices, in particular to a thermodynamic coupling test device for simulating the high-temperature service environment of an aeroengine. Background technique [0002] Aeroengines have always been hailed as the "Pearl in the Crown", and their development level represents a country's comprehensive technological level and national defense strength. The thrust-to-weight ratio of an aeroengine is one of the important indicators to measure engine performance, and it is closely related to the maneuverability and economy of the aircraft. According to the principle of Carnot cycle, increasing the temperature of the intake air before the turbine is the most important and practical method to increase the thrust-to-weight ratio of the engine. At present, there are three commonly used methods to increase the air temperature before the turbine: developing new hi...

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Problems solved by technology

However, the above-mentioned devices did not form a temperature gradient inside the sample, resulting in a far difference between the simulated working environment and the actual working environment of the aero-engine, so the failure process of the thermal barrier coating was not accurate.

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