Hydraulic

Hydraulic
Hydraulic oil through engine hydraulic (specifically based on the actual situation may be) to transmit pressure device. A complete hydraulic system consists of five parts, namely, power components, actuators, control devices, auxiliary components and hydraulic oil. Hydraulic power transmission due to its large, easy-to-pass and configuration, in the industrial, commercial industry widely. Implementation of the components of hydraulic systems and hydraulic motors hydraulic cylinder is the role of the pressure of the liquid can be converted to mechanical energy, and achieve the desired linear reciprocating or rotary motion.Power components (oil pump), actuators (engine cylinder or hydraulic motor), the control element (of valve), and other auxiliary components and the working medium of five parts. 
1, power components (oil pump) and its role is to use the original motive fluid mechanical energy into hydraulic pressure energy; is part of the hydraulic transmission of power.
2, actuators (hydraulic cylinders, hydraulic motors) it is the engine hydraulic fluid can be converted into mechanical energy. Among them, the cylinder a straight line, do motor rotation.
3, the pressure control devices including valves, flow valves and direction of the valve. Their role is to adjust the fluid level as needed no motivation to speed, and the working fluid in the hydraulic system pressure, flow and regulate the flow of control.
4, in addition to the above three parts of auxiliary components other than components, including pressure gauge, oil filter, storage devices, coolers, pipe fittings (including: all kinds of pipe fittings (flared, welded, card sets, sae flange), high pressure ball valves, quick couplers, hose assemblies, pressure fittings, hose clamps, etc.} and the fuel tank, etc., they are also very important.
5, the working fluid working medium refers to the various engine hydraulic transmission hydraulic oil or emulsion, it is achieved through the pump and the fluid motive energy conversion.
   It is composed of two cylinders of different sizes formed in the liquid tank filled with water or oil. Charge of water called “hydraulic machine”; oil-filled is called “hydraulic machine.”
     Two liquid tank can have a sliding piston, the piston in a small increase if the value of a certain pressure, according to Pascal’s law, the small piston to the pressure of the pressure of the liquid passing through the large piston, the piston will go to the top.
     Cross-sectional area of ​​small piston is set S1, plus a small downward pressure on the piston is F1. Thus, the small piston on the liquid pressure is P = F1/SI, the liquid can be the same size in all directions to pass. “Suffered great pressure piston must also equal to P. If the large piston cross-sectional area is S2, pressure P generated by the piston in the large upward pressure F2 = PxS2, cross-sectional area is a small multiple of the piston cross-sectional area from the type known in the small engine piston plus a smaller force, the engine piston will be in very big large force, for a hydraulic machine to suppress plywood, oil extraction, extraction weight, forging steel.
   Hydraulic components can be divided into power components and control components and the implementation of three main components. Though all the hydraulic components, and their own capabilities and the technical requirements of installation are not the same, respectively, are presented below:Power components: gear pumps, vane pumps, engine piston pumps, screw pumps (power component refers to the various hydraulic pump).
1, gear pumps and tandem pumps (including external and internal gear meshing) two structural types.
2, blade oil pump (including single-stage pumps, variable displacement pump, double pump, double pump).
3, plunger pump, plunger pump is divided into axial and radial engine piston pumps, axial piston pump with dosing pumps, variable displacement pump (variable displacement pump and pressure variables are divided into manual compensation variables, variables and other servo ) from the structure is divided into valve face with oil and oil ways with oily two configurations, the radial engine piston pump with oil type, basically for the valve with oil).
Actuators: hydraulic cylinder, hydraulic cylinder engine piston, piston cylinder, swing cylinder, combined cylinder;
Hydraulic motors: gear hydraulic motors, hydraulic motors vane, piston hydraulic motor; Control components: directional control valve, check valve, valve;
Pressure control valve: relief valve, pressure reducing valve, sequence valve, pressure switch, etc.;
Flow control valve: throttle valve, control valve, diverting valve; Auxiliary components: accumulators, filters, coolers, heaters, tubing, fittings, tanks, pressure gauge, flow meter, seals, etc.;