Low-temperature test temperature control system and method for aero-engine nozzle oil source pump

Abstract

The invention belongs to the technical field of aero-engine test, and particularly relates to a low-temperature test temperature control system and method for an aero-engine nozzle oil source pump. Atpresent, low-power compressor units are often selected on test benches. However, in the case of high-power heating of the nozzle oil source pump, the refrigeration capacity of the low-power compressor units is difficult to balance the heat generation of the test piece. The invention provides the low-temperature test temperature control system and method for the aviation engine nozzle oil source pump, which adopt a liquid nitrogen-fuel heat exchange system to cool down the fuel and cooperate with a temperature control mechanism to achieve rapid response refrigeration, have the advantages of small space usage, large cooling power, wide temperature control range, less equipment investment and easy adaptability improvement, can achieve fast power follow-up, and are high in accuracy of fuel temperature control and small in temperature fluctuation when used for low-temperature performance test of the high-power nozzle oil source pump.

Description

technical field [0001] The invention belongs to the technical field of aero-engine testing, and in particular relates to a low-temperature test temperature control system and method for an aero-engine nozzle oil source pump. Background technique [0002] The low temperature simulation test is required in the development process of the nozzle oil source pump of the aero-engine. Existing test equipment uses compressor units to cool fuel oil. Due to the large size and high price of high-power compressor units, smaller power compressor units are often selected on the test bench. The cooling capacity of the unit is difficult to balance the calorific value of the test piece, which leads to a gradual increase in the temperature of the fuel oil during the test, which affects the test accuracy and progress. Contents of the invention [0003] The technical problem solved by the present invention is to provide a low-temperature test temperature control system and method for fuel sou...

AI Technical Summary

Problems solved by technology

Existing test equipment uses compressor units to cool fuel oil. Due to the large size and high price of high-power compressor units, smaller power compressor units are often selected on the test bench. The cooling capacity of the unit is difficult to balance the calorific value of the test piece, resulting in a gradual increase in the temperature of the fuel oil during the test, which affects the test accuracy and process

Images