High-temperature high-pressure oil way system for three-position four-way hydraulic combined valve

Abstract

The invention discloses a high-temperature high-pressure oil way system for a three-position four-way hydraulic combined valve. The high-temperature high-pressure oil way system comprises a high-pressure plunger pump, a three-position four-way reversing valve, a proportional throttle valve and a high-pressure hydraulic cylinder. The three-position four-way reversing valve is connected with the high-pressure plunger pump, the proportional throttle valve, the high-pressure hydraulic cylinder and an oil tank. The high-pressure hydraulic cylinder is connected with a simulation load through a high-pressure piston rod. The input end of the high-pressure hydraulic cylinder is connected with the output end of the proportional throttle valve. The proportional throttle valve and four one-way valvesform a bridge type loop system. According to the high-temperature high-pressure oil way system for the three-position four-way hydraulic combined valve, the three-position four-way reversing valve where oil can enter through two oil ways is adopted to replace a plurality of function valves in two kinds of equipment, a high-temperature high-pressure bearing valve where energizing is conducted fromthe left and the right and oil enters from the left and the right is achieved, and oil pressure is adjusted through the bridge type loop system; the inlet flow and the outlet flow of a rodless cavityof the hydraulic cylinder are controlled; the left inlet speed and the right inlet speed of the oil tank are controlled; the functions of two proportional throttle valves are achieved through one proportional throttle valve; and test detection of high-temperature high-pressure oil on a hydraulic part is completed.

Description

technical field [0001] The invention relates to the technical field of hydraulic detection of aviation equipment, in particular to a high-temperature and high-pressure oil circuit system of a three-position four-way hydraulic combined valve. Background technique [0002] The hydraulic piping system of aviation hydraulic equipment has very high requirements on the sealing quality of various aviation hydraulic parts and various strength and quality indicators of high temperature and high pressure resistance. Although strict testing has been done during processing, high altitude must be simulated before installation. Flying in various complex limit states to carry out various simulation tests such as high temperature and high pressure, the hydraulic system of this kind of test bench equipment must simulate the most extreme state of the aircraft flying in the sky. Existing simulation tests usually use multiple one-way valve oil circuit technical equipment for testing; however, d...

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Problems solved by technology

In this way, each device needs to be equipped with multiple functional valves, which is not only bulky, but also has the problem of oil leakage, which is not suitable for aviation equipment inspection

Moreover, these two equipment tests are time-consuming and laborious, and the consumption and waste of medium oil are also very large.

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