What parts does a complete hydraulic system consist of?

- Sep 19, 2018 -

A complete hydraulic system consists of five parts, namely the power element, the actuator, the control element, the auxiliary element and the hydraulic fluid.

The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid, referring to the oil pump in the hydraulic system, which provides power to the entire hydraulic system. The hydraulic pump is generally constructed in the form of a gear pump, a vane pump and a plunger pump.

Actuating elements (such as hydraulic cylinders and hydraulic motors) convert the pressure energy of the liquid into mechanical energy, driving the load for linear reciprocating or swiveling motion.

Control elements (ie various hydraulic valves) control and regulate the pressure, flow and direction of the liquid in the hydraulic system. Depending on the control function, hydraulic valves can be divided into pressure control valves, flow control valves and directional control valves. The pressure control valve is further divided into a flow valve (safety valve), a pressure reducing valve, a sequence valve, a pressure relay, etc.; the flow control valve includes a throttle valve, a regulating valve, a split flow collecting valve, etc.; the directional control valve includes a one-way valve, Hydraulic control check valve, shuttle valve, reversing valve, etc. According to different control methods, hydraulic valves can be divided into switch control valves, fixed value control valves and proportional control valves.

Auxiliary components include fuel tanks, oil filters, tubing and fittings, seals, pressure gauges, oil level oil gauges, etc.

Hydraulic oil is the working medium for transferring energy in hydraulic systems. There are various types of mineral oil, emulsion and synthetic hydraulic oil.


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