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HYD. Deck Machinery

 

 

Ring Main System(Parallel Circuit)
  • ・High-pressure type (20.6 – 24.5MPa)
  • ・One central pump station drives multiple winches.
  • ・The hydraulic power source can be commonly used for hatch covers, RO-RO device and others.
  • ・Each machine is connected to the main lines in parallel.
  • ・Variable displacement swash plate axial piston pumps.
  • ・Variable displacement motors for winches.
  • ・The pump station consists of pumps, filter, cooler safety devices and oil tank.
Series Circuit
  • ・High-pressure type (20.6MPa)
  • ・Each pump can be connected to multiple winches in series.
  • ・Capacity of each pump can be minimized to drive just one winch.
  • ・Screw pump with very silent features.
  • ・Variable displacement motors for winches.
  • ・Pump unit consists of two (2) pumps, filter and oil tank.
RING MAIN SYSTEM-TYPICAL LAYOUT
RING MAIN SYSTEM ? CONCEPTUAL DIAGRAM
  • ・Capacity of pump station is determined to cover total oil flow required from winches in simultaneous operation.
  • ・Pump regulator controls pump discharging oil volume according to demands of winches minimizing energy consumption.
  • ・Main line from Pump station is connected to each winch or other equipment via branch lines.
  • ・Pump station keeps oil pressure in the main line constant.