The leakage of hydraulic cylinders is mainly caused by leakage in pipe joints, flanges, etc., and its leakage can be prevented and controlled by the following measures. By design, the number of fittings and flanges in the pipeline should be minimized. Chimney valves, cartridge valves, floor valves, etc. are commonly used in the design to facilitate installation and disassembly, and reduce pipeline leakage. The use of combination blocks can effectively reduce the leakage of hydraulic cylinder pipes.
The hydraulic valve platform is installed in the hydraulic system close to the actuator, so that when the actuator moves, the oil in the hydraulic system will flow to the actuator and the hydraulic cylinder through the hydraulic valve platform. In this way, the overall length of the hydraulic line is greatly reduced, and the number of pipe joints is also reduced accordingly.
Hydraulic vibration and mechanical vibration have a direct or indirect effect on the operating system, resulting in loosening and leakage of pipeline connections. Hydraulic shock is generally caused by high-speed reverse rotation. Therefore, if permitted, the reversing period should be extended as much as possible, and measures such as installing a buffer valve in the valve core, installing a buffer cone structure, or installing a regulating valve on the reversing valve should be used to extend the reversing time. Do not allow external sources of vibration to enter the hydraulic system. The tube should be used correctly. The pump can be equipped with shock absorbers, high-pressure hoses, compensating high-pressure nozzles, or pulse absorbers to eliminate pressure fluctuations and reduce vibration.
Regular inspection, regular maintenance and timely treatment of hydraulic cylinders are the fundamental guarantee to prevent oil leakage and reduce failure.