Pressure control device and method in climate laboratory aircraft engine start-up test room

Abstract

The invention discloses a pressure control device and method in a climate laboratory aircraft engine start-up test room. The device comprises a laboratory thermal insulation wall plate, a positive pressure control mechanism and a negative pressure control mechanism. The positive pressure control mechanism and the negative pressure control mechanism both include The air flow channel and the thermal insulation sealing door assembly, the positive pressure control valve is installed in the air flow channel of the positive pressure control mechanism, and the negative pressure control valve is installed in the air flow channel of the negative pressure control mechanism; the method includes: when the aircraft engine start-up test is not carried out The operation process; the operation process before the start-up test of the aircraft engine; the working process of the positive pressure control valve and the negative pressure control valve during the engine start-up test. The invention solves the problem of excessive pressure difference inside and outside the laboratory caused by the mismatch between the compensation air flow and the exhaust emission of the engine during the driving test of the aircraft engine, and can ensure the safety of the driving test of the aircraft engine, with good sealing performance and fast response speed.

Description

technical field [0001] The invention belongs to the technical field of aircraft climate environment adaptability analysis and test, in particular to a pressure control device and method in a climate laboratory aircraft engine driving test room. Background technique [0002] The climate laboratory refers to a large-scale comprehensive climate laboratory. The large-scale comprehensive climate laboratory can simulate the climate environment on the earth's surface such as extreme low temperature, high temperature, humidity and heat, snowfall, solar irradiation, icing and freezing rain, rain, and freezing fog. It can meet the climate test requirements of large equipment or complete machines. The storage and working tests of the whole aircraft under extreme climate conditions are carried out in a large-scale comprehensive climate laboratory. Among them, the starting test and working characteristic test of the aircraft engine under extreme low temperature or high temperature enviro...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a pressure control device and method in the climate laboratory aircraft engine start-up test room in view of the above-mentioned deficiencies in the prior art. The problem of excessive pressure difference inside and outside the laboratory caused by the mismatch of exhaust emissions can ensure the safety of aircraft engine driving tests, good sealing performance, and fast response speed

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