Reciprocating compressor basics

This prevents lubricant from entering the cylinder and contaminating the gas, particularly necessary in non-lubricated cylinders. Most equipment designs incorporate block-type, force-feed lubrication systems; however when there is zero process tolerance for oil carryover, nonlubricated designs are employed. The advantage is that the va lve has a single element making flow control somewhat easier. Gas transmission pipelines, petrochemical plants, refineries and many other industries all depend on this type of equipment. I am very new in reciprocating compressor field but after getting this study material really its very helpful for me Thanks for sharing this.

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Reciprocating compressor components In a reciprocating compressor, pistons are used to achieve compression and the design of this compressor-type mimics the piston-driven features of an internal combustion engine.

Usually, a radial ring is the first packing ring face the cylinder pressure. It should be noted that the author has never seen a "typical" compressor installation, and acknowledges the existence of many exceptions. In addition to his work for Demand Studios, Scott spends much of his cmopressor writing poetry and a novel.

It reduces the volume of the gas and increases its density without turning that gas into a liquid. High flow, low compression ratio applications are best served by axial flow compressors.

In some cases, nodular or ductile iron can baslcs used in lieu of cast iron. Current Issue Archive Advertise. It can also keep a synthetic lubricant in a cylinder.

Reciprocating Compressor Basics

These machines can employ a range of drive configurations, lubrication methods and cooling processes; and offer either single or multi-phase compression according to the particular demands of each industrial operation.

Jane and Michael ran a cyber cafe for a few years but now Jane concentrates on her cooking and writing. The disadvantage is that it is difficult to maintain uniform flow control with the independent rings. The compression cylinders Figure 1also known as stages, of which a particular design may have from one to six or more, provide confinement for the process gas during compression.

The cuts of this ring are used to break down the pressure act on the ring. This is point 4. One of these options must be employed to prevent pressure losses. The crankshaft is fitted with counterweights to balance dynamic forces created by the movement of the heavy pistons. This to avoid the wear in the cylinder wall and also increase efficiency by reducing the friction force.

The gas is then discharged either to be used immediately by a pneumatic machine, or stored in compressed air tanks.

How Does a Reciprocating Compressor Work?

Her love of food was inspired by helping her mother to cook for her 6 brothers and sisters, as she is the eldest child. A flywheel is also provided to store rotational inertia and provide mechanical advantage for manual rotation of the assembly.

Antifriction bearing shall be used for compressor rating less than kW. Toggle navigation Open App. This is usually by means of a water jacket. Intercoolers provide an opportunity for heat removal from reciiprocating process gas between compression stages. The four parts of the cycle are compression, discharge, expansion and intake.

In the case of machines above kW. The rider ring is one piece configuration, to accommodate the rider ring the piston is segmented construction.

However, it determines the total horsepower of the compressor.

Reciprocating compressors are typically used where high compression ratios ratio of discharge to suction pressures are required per stage without high flow rates, and the process fluid is relatively dry. Nowadays the compressor manufacturer preferred non-metallic materials because of less weight when compare with metallic rings. In the dual-acting design, compression occurs on both sides of the piston during both the advancing and retreating stroke.

At the conclusion of a cmopressor cycle, the piston is fully retreated within the cylinder at V1, the volume of which is filled with process gas at suction conditions pressure, P1 and temperature, T1and the suction and discharge valves are all closed. Such compressors fall into one or other of two general classifications: Arrangements may be of single-or dual-acting design. Very valuable important for explanation procedures.

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