A hydraulic pump cavitation state detection system

Abstract

The invention relates to a hydraulic pump cavitation state detection system, which includes a signal acquisition module and a main control module; wherein, the signal acquisition module is used to collect the current operation data of the hydraulic pump to be tested in the hydraulic circuit; the current operation data includes the The temperature data of the oil inlet of the hydraulic pump to be tested, the pressure data of the oil inlet of the hydraulic pump to be tested, the flow data of the oil inlet of the hydraulic pump to be tested, the pressure data of the oil outlet of the hydraulic pump to be tested, the flow data of the oil outlet of the hydraulic pump to be tested and the data of the oil outlet of the hydraulic pump to be tested. Measure the vibration data of the pump casing of the hydraulic pump; the main control module integrates a well-trained extreme learning machine model; the trained extreme learning machine model is trained according to the historical operation data of the hydraulic pump and the cavitation state image of the hydraulic pump corresponding to the historical operation data owned. The invention determines the cavitation state of the hydraulic pump to be tested according to the current operation data of the hydraulic pump and the trained extreme learning machine model, and can truly and comprehensively detect the cavitation state of the hydraulic pump.

Description

technical field [0001] The invention relates to the technical field of hydraulic pump detection, in particular to a hydraulic pump cavitation state detection system. Background technique [0002] With the needs of industrial applications and social development, hydraulic pumps are developing in the direction of low noise, low flow pulsation, high speed and high pressure, and the impact of cavitation on the performance of hydraulic pumps has become more prominent. Cavitation phenomenon refers to the phenomenon that air or steam is separated from oil when its pressure drops below the air separation pressure or saturated vapor pressure somewhere in the process of liquid flow. Hydraulic oil usually contains some air suspended or dissolved in it. The amount of air in hydraulic oil is called air content, and the air content of hydraulic oil can reach 6-12% under standard atmospheric pressure. When the pressure is lower than the air separation pressure, the air will precipitate fr...

AI Technical Summary

Problems solved by technology

The cavitation of the hydraulic pump is the direct cause of cavitation in the pump, which aggravates the noise and impact of the hydraulic pump, reduces the working efficiency, and even causes the fatigue damage of the parts in the pump. Therefore, cavitation has become one of the main factors affecting the performance of the hydraulic pump.

Many scholars and researchers have studied the cavitation of hydraulic pumps, but they basically focus on the theory and simulation of cavitation mechanism, which cannot simulate real cavitation, and there are many factors that affect cavitation. Simulation and theory Studies do not adequately account for all influencing factors

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