Differential pressure regulating valve dynamic performance test bench and measurement method thereof

Abstract

The invention provides a differential pressure regulating valve dynamic performance test bench and a measurement method thereof, the differential pressure regulating valve dynamic performance test bench comprises a valve pipeline main body, an oil tank, an air compressor and a high-speed photography acquisition system; the valve pipeline main body comprises a closed loop, a valve inlet pipeline, avalve oil supply pipeline, a valve overflow pipeline and a valve middle cavity inlet pipeline; a third temperature sensor and a third pressure sensor are mounted on the valve inlet pipeline; a fourthpressure sensor and a fourth temperature sensor are mounted on the valve oil supply pipeline; the valve overflow pipeline is used for connecting an overflow outlet and an oil tank inlet, the valve middle cavity inlet pipeline is used for connecting an air compressor and a middle cavity pressure inlet, and the high-speed photography acquisition system is used for acquiring valve core movement conditions in different states. According to the invention, the dynamic characteristic test of the differential pressure regulating valve under a specific working condition can be achieved.

Description

technical field [0001] The invention relates to the technical field of lubricating oil system valve testing, in particular to a test bench for testing the dynamic performance of a pressure difference valve and a measuring method thereof. Background technique [0002] The pressure differential valve was first developed by Hu Xinghai, Shenyang Engine Research Institute of China Aviation Development Corporation, and has been authorized as a utility model patent. At present, the lubricating oil supply system of foreign military aero-engines (such as the F110 military engine of the American GE company and the Russian AH-31t ​​engine) all use constant pressure valves to control the flow of the lubricating oil system. The third-generation fighter lubricating oil independently developed by China The oil supply system uses a differential pressure valve to control the circulation of the lubricating oil system. Compared with the constant pressure oil supply method, this control method ...

AI Technical Summary

Problems solved by technology

In the actual operation of the engine, due to the unreasonable setting of the opening pressure of the differential pressure valve, the lubricating oil supply pressure is too high or too low, causing the aircraft to report the downturn signal from time to time

In addition, in the design of the lubricating oil system, due to the lack of data related to the flow characteristics of the differential pressure valve, it is simplified or ignored, thus affecting the accuracy and authenticity of the calculation results

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