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Poppet Type Valve
Plate Type Valve
Ring Type Valve
Poppet Valve
Reciprocating Compressor Basics ComponentsThe poppet valve is used for low-speed
compressor and gas contain oil particles. The poppet valves are high lift valves, due
to high lift the pressure drop across the valve is low.
Permits a longer stroke and greater capacity.
Separates crankcase from the cylinder, allowing control of oil carryover into the cylinder.
Backup Ring支承环
The construction of the backup ring is similar to the radial ring. As the name
indicate this type of ring is used to backup all the rings when using in the high-
pressure application.
Radial Ring or Pressure Breaker Ring径向环或压力断路器环
The radial ring or pressure breaker ring is cut into three segments so that each cut
lies on the side of a radial direction of the ring. The cuts in the ring are used to
break down the pressure act on the ring. The radial ring is the first ring of road
packing to face the cylinder pressure.
Crank Shaft曲轴
Larger compressors, normally above 150 kW(200 hp), the crankshaft is made up of
forged steel. Compressor less than or equal to 150kW, the crankshaft is made up of
ductile iron.
For a horizontally mounted cylinder, along with piston rings, an additional ring called wear band or rider ring is used to lower the wear between cylinder and piston.
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