Week 2 2_hydraulic_systems_component


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hydraulic subtopic

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Week 2 2_hydraulic_systems_component

  1. 1. Power pack
  2. 2. Components of a Hydraulic System Tank/resevoir Pump Piping system Power supply/ electric motor Actuator Valves
  3. 3.  Consist of three main components ◦ Reservoir ◦ Electric motor ◦ Pump
  4. 4.  Through hydraulic reservoir the hydraulic system is supply with fluid means that the reservoir stores the required quantity of fluid.  The reservoir performs important functions such: • Dissipating heat through its walls • Conditioning the fluid by helping settle the contaminants • Relief of air from the systems • Providing mounting support for the pump and other components.
  5. 5.  A proper tank has the following: • Baffle plate for preventing the return fluid from entering the pump inlet • For maintenance purposes a reservoir should have an inspection cover • A filter breather for air exchange • Level indicator for checking the fluid level • Connections for suction discharge and drain lines.
  6. 6. Inspection cover
  7. 7.  Used to drive the hydraulic pump
  8. 8.  Mechanical device that converts mechanical power into hydraulic energy.  Generates flow with enough power to overcome pressure induced by the load.  Its mechanical action creates a vacuum at the pump inlet which allows atmospheric pressure to force liquid from the reservoir into the inlet line to the pump.  Delivers this liquid to the pump outlet and forces it into the hydraulic system.
  9. 9.  The control of hydraulic power in hydraulic power systems is carried out by means of control valves.  Types of hydraulics valve ◦ Pressure control valves (PCVs) ◦ Directional control valves (DCVs; direct- and pilot- operated) ◦ Flow control valves (FCVs) ◦ Check valves
  10. 10.  To drive loads by converting the hydraulic power into mechanical power.  The mechanical power delivered to the load is managed by controlling the fluid pressure and flow rate, by using various hydraulic control valves.  The hydraulic actuators are classified into three main groups according to motion type: ◦ Hydraulic cylinders, performing linear motion ◦ Hydraulic motors, performing continuous rotary motion ◦ Hydraulic rotary actuators, performing limited angular displacement
  11. 11.  The elements of the hydraulic system are interconnected by hydraulic transmission lines, through which the hydraulic liquid flows.  These lines are either rigid tubing or flexible hoses. The rigid tubing lines connect fixed nonvibrating elements, and the flexible hose lines connect moving parts.  Regardless of their simple design, the hydraulic tubes have an important effect on the steady state and transient behavior of the system.  Transmission lines affect system performance in the following ways: ◦ • Hydraulic friction losses; hydraulic resistance of lines ◦ • Hydraulic local, or secondary, pressure losses ◦ • Oil compressibility and elasticity of pipe material