The working principle of reciprocating compressors

The function of reciprocating compressors is achieved through the continuous variation of the working volume, consisting of the cylinder, valve, and piston moving reciprocally within the cylinder. Excluding the actual volume and energy losses during the operation of reciprocating compressors (i.e., assuming an ideal process), the work done by the crankshaft of a reciprocating compressor per revolution can be divided into the intake, compression, and exhaust processes.
The reciprocating compressor compression process: As the piston moves from the bottom dead center upwards, the intake and exhaust valves are closed. The gas is compressed within the sealed cylinder, and due to the decreasing cylinder volume, the pressure and temperature gradually rise until the cylinder gas pressure equals the exhaust pressure. The compression process is generally considered an isentropic process.
Piston compressor exhaust process: As the piston continues to move upwards, the pressure inside the cylinder becomes greater than the exhaust pressure, causing the exhaust valve to open. The gas inside the cylinder is then pushed out at constant pressure, exiting the cylinder into the exhaust pipe until the piston reaches the top dead center. At this point, due to the force of the exhaust valve spring and the weight of the valve plate, the exhaust valve closes, marking the end of the exhaust process.
Here is the compiled information on the working principle of reciprocating compressors. Our company's compressor products, including natural gas compressors, special gas compressors, medium and high-pressure compressors, and unloading compressors, are widely used in industries such as chemicals, pharmaceuticals, oil fields, and gas. We welcome customers to visit and inspect our factory for guidance.