When the hydraulic power unit is used as an oil supply device, it is connected to several hydraulic cylinders through an external piping system to control multiple sets of valves. This is a separate sealed power source system consisting of a fuel tank, an oil pump and an accumulator.
The oil station of hydraulic power unit can be equipped with PLC control system, which controls all internal hydraulic functions and generates signals to exchange with the control room. Control elements such as hydraulic servo valve are directly mounted on the hydraulic cylinder, through which the high-pressure oil is fed into the cylinder or discharged from it.
In the working state, the hydraulic actuator is controlled by the solenoid valve, the system command signal makes the solenoid valve move, control the oil pressure and the energy release of the accumulator, and then control the oil cylinder slide valve, drive the valve through the mechanical transmission mechanism, and implement the quick closing, normal opening and closing and test control.
The high-pressure oil cylinder can be fixed on the valve stem or directly used as the actuator. The excess hydraulic oil is returned to the hydraulic station so that the piping system can control several parallel valves with one inlet pipe and one return pipe.
This hydraulic station with special drive technology is used to control the actuators of the main steam valve and the turbine bypass system. The power unit is designed to be optimized for various applications. For example, it can be used for truck operation in harsh environment, or for heavy lifting for a long time, and other occasions requiring high performance and quality products.
