Engine test bed and test method thereof

Abstract

The invention discloses an engine test bed which comprises an air inlet system, an engine thrust measurement rack, an exhaust pipeline, a tail gas treatment system and a simulation cabin, wherein theengine thrust measurement rack is fixedly installed in the simulation cabin; a tested engine is installed on the engine thrust measurement rack; the air inlet system communicates with the tested engine; and one end of the exhaust pipeline penetrates through the surface of a shell of the simulation cabin to be fixedly installed in the simulation cabin, and the other end of the exhaust pipeline fixedly communicates with the tail gas treatment system. According to the engine test bed, the adjustment speed of the air inlet system is high, so that the adjustment time of engine air inlet simulationof the test bed is shortened, the test cost is reduced, and energy waste is avoided. Meanwhile, the engine thrust measurement rack realizes measurement of engine thrust and is simple in structure. Inaddition, treatment of tail gas of the engine test bed is realized, so that the gas discharged from an air outlet of an alkaline spray tower meets the national pollutant emission standards.

Description

technical field [0001] The invention relates to the technical field of engine testing, in particular to an engine test bench and a testing method thereof. Background technique [0002] Engine testing and testing technology is an important part of solid propulsion technology. Before the flight test of an aero-engine, a simulation test must be done on the ground. During the engine test, a set of intake parameters are required, including total intake pressure, intake air flow, The intake air oxygen content, total intake air temperature, and engine fuel supply are called intake state points. After reaching the set value and stabilizing at the same time, record its performance and parameters or evaluate its performance. With the maturity of the engine, the application of the engine is becoming more and more extensive. On this basis, when it is used for the engine of the aircraft, especially the unmanned aerial vehicle, and the ground test of the engine, the engine intake system n...

AI Technical Summary

Problems solved by technology

The main reason is that the flight test is costly, long cycle, small amount of information harvested, risky, and requires a lot of manpower

This requires the ground test of the engine. The ground test of the engine refers to the static test of the system on the ground according to specific conditions and environmental requirements, and obtains information describing various performance indicators of the system, so as to solve the key problems in the engine thrust test process. However, in the existing technology, there is no mature technology for the experimental equipment of engine thrust

[0004] In addition, for the engine test bench of aerospace engines such as turbofan engines and solid impulse engines, the main components of the exhaust gas are carbon dioxide and hydrogen sulfide and contain certain particulate matter. The particulate matter mainly includes boron trioxide and magnesium oxide. The test bench If the discharged waste gas is directly discharged into the atmosphere, it will greatly pollute the atmosphere and cause acid rain. At the same time, the discharged particulate matter will form pollutants such as PM10 and PM2.5 to pollute the atmosphere, which is extremely unenvironmental. There is no mature and effective method for exhaust gas treatment of engine test benches for turbofan engines, solid impulse engines and other aerospace engines

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