Hydraulic pump cavitation state detecting system

Abstract

The invention relates to a hydraulic pump cavitation state detecting system. The hydraulic pump cavitation state detecting system comprises a signal collecting module and a main control module, wherein the signal collecting module is used for collecting current operation data of a to-be-detected hydraulic pump in a hydraulic loop in the operation process; the current operation data comprise oil inlet temperature data of the to-be-detected hydraulic pump, oil inlet pressure data of the to-be-detected hydraulic pump, oil inlet flow data of the to-be-detected hydraulic pump, oil outlet pressure data of the to-be-detected hydraulic pump, oil outlet flow data of the to-be-detected hydraulic pump and pump shell vibration data of the to-be-detected hydraulic pump; the main control module is integrated with a trained ultralimit learning machine model; and the trained ultralimit learning machine model is obtained according to hydraulic pump historical operation data and a hydraulic pump cavitation state image corresponding to the historical operation data through training. According to the hydraulic pump cavitation state detecting system, the cavitation state of the to-be-detected hydraulicpump is determined based on the current operation data of the hydraulic pump and the trained ultralimit learning machine model, and the cavitation state of the hydraulic pump can be really and comprehensively detected.

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

Images