Hydraulic power unit (HPU) is used as the fuel supply means through external piping system with a number of hydraulic cylinders are connected to control multiple sets of valve actuation. Tanks, pumps and accumulators to form an independent source of power oil hermetically sealed system. Petrol stations can be equipped with PLC control system, which controls all hydraulic functions and generates a signal inside the control room (DCS) switching. Control elements such as hydraulic servo valve is mounted directly on the hydraulic cylinder, through the valve into the high pressure hydraulic cylinders, or from which the release of high-pressure oil. Under normal, pump oil to the system to automatically maintain system pressure rating by controlling the valve atresia, implement secure his position valve function in any position; in working condition, hydraulic actuators controlled by solenoid valves, system command signal the solenoid valve operation control and hydraulic accumulator of energy release, and then slide valve control cylinder, valve driven by a mechanical transmission mechanism, the implementation of rapid close, open and close properly, and test control. High-pressure cylinder can be fixed on the stem, it can also be used directly as the executing agency. Returns excess hydraulic oil hydraulic oil station, this pipeline into the pipeline system with a control valve can be a return pipe several parallel connections. This has a special hydraulic drive technology is used to control the operation of the actuator main steam valve and turbine bypass systems. Changsha QIANRUN power unit technology-related technology products

The power unit designed for all applications optimized design can be applied to harsh environments such as trucks run, or long for heavy porters conditions, and other occasions that require high performance and high quality products.

Resulting in an extremely pluralistic universal platform, using standard components that can cope with most applications that demand the market conditions, customer inventory of hydraulic components is reduced to a minimum, but also greatly reduce the workload of non-standard design .

The power unit also allows special applications even more cost advantages.
For example HE power unit, built on a multi-versatile platform that allows the use of motor sizes from 80 to 132mm (0.3 ~ 4.5kw), the pump displacement from 0.24 to 5.7cc. A power unit can control up to four cylinders. Core components of the system are adapters. There are two different sizes. It has various shapes and installation.