Inspection system and method for simulated working conditions of aeroengine guide vanes

Abstract

An aeroengine guide vane simulated working condition inspection system and method are provided, wherein the system comprises a hydraulic pump which supplies oil to an engine to be tested, a time relay is arranged between the hydraulic pump and the engine to be tested, the time relay is used for controlling the time for the hydraulic pump to supply oil pressure each time so that speed increase and decease during working of an engine guide vane is simulated, and the guide vane is connected with an angle indicator used for measuring opening of the guide vane. The system above is capable of simulating the working condition of the engine guide vane, inspecting the guide vane before trial run of the engine, inspecting following performance of a compressor guide vane and judging whether lag problem is present or not, potential hidden faults can be discovered in advance, trail run risk is decreased, and troubleshooting period of the engine is shortened.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to an inspection system and method for simulating working conditions of guide blades of aero-engines. Background technique [0002] The compressor is an important component of the aero-engine. It is responsible for inhaling air from the surrounding atmosphere and compressing and boosting it, and then continuously providing high-pressure air to the combustion chamber. Aeroengines have the following requirements for compressors: (1) high efficiency, (2) high single-stage pressure ratio, (3) large flow capacity per unit area, (4) matching of compressor characteristics and turbine characteristics, (5) stable The working area is wide, and (6) has good anti-surge measures. Among the above requirements, (5) and (6) are the requirements to ensure the safety of the aero-engine, which are related to the use of the engine and the flight safety of the aircraft, and are two very important ...

AI Technical Summary

Problems solved by technology

In order to increase the surge margin and prevent the occurrence of surge, the adjustment angle of the guide vane needs to be changed with the change of the engine speed. When the adjustment angle of the guide vane and the speed do not follow the work sluggishly, the surge of the compressor will be reduced. Vibration margin, prone to surge, threatening the safety of the engine and aircraft

[0004] Some existing aero-engines often have the problem of poor followability of the adjustment angle of the compressor guide vane and slow work during the use process, and the fault cannot be found in advance. It can only be discovered when there is a problem during use, and then rectified. Not only will it cause safety hazards during use, but it will also increase the troubleshooting cycle and maintenance costs

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