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Basics, Compressor
Compressor Basics Components, Reciprocating Compressor, Reciprocating
Compressor Basics, Reciprocating Compressor Basics Components
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.
Gives greater stability to the piston, eliminating piston “slap” and reducing ring wear
Permits stronger piston design and higher operating pressures.
Tangent Ring切线环
The tangent ring is cut into three segments so that each cut lies on the side of an
equilateral triangle. The cuts of this ring maintain sealing contact regardless of
variations of the ring’s inside diameter. If wear occurs in the tangent ring, the
garter spring will tighten the ring segments to compensate for the wear.
The compressor can use narrow piston, due to the use of narrow piston larger valve area for greater efficiency.
For lubricated service, metallic rings such as cast iron or bronze as well as non-metallic materials such as filled nylon are used. Nowadays the compressor manufacturers preferred non-metallic materials because of less weight and lower frictional force when compared with metallic rings.
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