Reciprocating Compressor System 

A reciprocating compressor is a positive displacement compressor that changes the gas volume by the reciprocating motion of a piston in a cylinder to achieve pressurization. It is widely used in high-pressure, low-flow scenarios.

Working principle:

Volume change: The crankshaft drives the connecting rod to drive the piston to reciprocate in the cylinder. The intake and exhaust valves control the intake and exhaust of gas, completing the four working processes of intake, compression, exhaust and expansion.Multi-stage compression: Multi-stage compression is used when high pressure is required, with coolers installed between stages to reduce exhaust temperature, and the pressure can exceed 100MPa.

Structural classification:

V-type, W-type, D-type

Transmission method:

Crankshaft drive (with or without crosshead)

Non-axis driven (such as free piston, electromagnetic drive)

Cylinder action: single-acting (single-sided compression), double-acting (double-sided compression), and differential type.

Lubrication method: Oil lubrication (traditional) or oil-free lubrication (using self-lubricating materials or diaphragm structure)High-pressure applications: oil and gas compression, chemical process gas pressurization (such as ammonia synthesis).Special requirements: Oil-free lubrication type for clean gas transportation in food, pharmaceutical and other industries.