Test apparatus for verifying lubricating oil pump function after lubricating oil interruption, and verification method

Abstract

The invention relates to a test apparatus for verifying a lubricating oil pump function after a lubricating oil interruption. The test apparatus for verifying the lubricating oil pump function after the lubricating oil interruption comprises a lubricating oil pump test system, a connecting pipe and two air valves, wherein the two air valves are respectively a normally-open air valve and a normally-closed air valve and connect a heating lubricating oil tank, a metering oil tank and a lubricating oil pump group in the lubricating oil pump test system through the connecting piece, the normally-open air valve is arranged between the metering oil tank and the lubricating oil pump group, and the normally-closed air valve is also connected in parallel with the normally-open air valve for communicating with air. The invention further provides a test method for verifying a lubricating oil pump function after a lubricating oil interruption by use of the test apparatus for verifying the lubricating oil pump function after the lubricating oil interruption. The test apparatus and the verification method can effectively verify oil supply recovery performance of a lubricating oil pump after the oil interruption, reduce the risk of performing a lubricating oil interruption test on a whole-vehicle test engine, verify the capability of the lubricating oil, and also have the advantages of low risks, low cost, high convenience and practicality and the like.

Description

technical field [0001] The invention belongs to the technical field of aviation gas turbines, and in particular relates to a test device and a verification method for verifying the function of a lubricating oil pump after lubricating oil is interrupted. Background technique [0002] The aviation gas turbine engine lubricating oil system is an important part of the aviation gas turbine engine. It is mainly responsible for the lubrication of the engine's high and low pressure rotor fulcrum bearings, transmission gears and other components. At present, aero-engines must have the ability to interrupt the lubricating oil for 30s in the maximum or intermediate state, and it needs to be verified in the test run of the whole machine. This requires the lubricating oil pump to stop supplying oil to each bearing cavity of the engine during the test run, and suck air for 30 seconds to test the oil cut-off capability of the engine bearings. After 30 seconds, the lubricating oil pump sho...

AI Technical Summary

Problems solved by technology

After 30 seconds, the lubricating oil pump should be able to restore the engine oil supply immediately, otherwise it will cause danger to the whole engine

[0003] At present, domestic lubricating oil interruption tests are all carried out on the whole machine of the aero-engine, and there is no separate tester designed to verify whether the newly developed lubricating oil pump can restore the normal oil supply after sucking air, which has a relatively large risk. The lubricating oil pump cannot restore the oil supply after the engine oil is cut off for 30 seconds, which will cause great danger to the whole engine. However, there is no clear test method in China to verify whether the lubricating oil pump can restore the oil supply after the oil is cut off.

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