Oil leakage protection hydraulic system, engineering machinery and oil leakage protection method

• Main Authors: WU MINWANG, ZHANG DAPENG, TANG ZHONGYONG, ZHAO YUMING, REN CHENBO, ZHANG DAQING
• Format: Patent
• Language: Chinese; English
• Published: 30.05.2023
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; WEAPONS

The invention discloses an oil leakage protection hydraulic system, an engineering machine and an oil leakage protection method, and relates to the technical field of hydraulics, the oil leakage protection hydraulic system comprises a main oil way, an oil inlet, an oil outlet, a sequence valve and a pressure comparison on-off valve, the oil inlet end of the speed regulating valve is connected between the oil inlet of the main oil way and the sequence valve; the oil inlet end of the liquid storage delayer is connected with the oil outlet end of the speed regulating valve, and the oil outlet end of the liquid storage delayer is connected with the oil return tank; the normally-closed control end of the pressure comparison on-off valve is connected to the oil inlet end of the liquid storage delayer, and the normally-open control end of the pressure comparison on-off valve is connected to the oil inlet end of the oil needing device. In the specific using process of the oil leakage protection hydraulic system, when