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Brief introduction of the use of squeezing machine
Source: China Bearing Network Time: 2014-06-04
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2. The reciprocating chiller reciprocating chiller supplies a large outflow pressure capacity from 1 bar g to 1000 bar g. Reciprocating compact oil smooth cylinder; crankcase components; coils; pistons; valves and loading rods. Crankcase parts contain crosses Head bearings; cross joints; crosshead guides and crankpins. The refrigeration application indicated that ISO15 smooth oil with an operating viscosity of less than 10 cSt can provide a suitable smoothing effect. However; relying on gas molecular weight and flow pressure operation; processing and hydrocarbon The classic application of the compound gas reciprocating compressor is the ISO68-680 product.
In most reciprocating chillers; one fluid is applied as a smoothing agent to all parts. Smaller reciprocating squeezing machines use splashing smooth oil. Larger equipment typically uses an oil pump system to smooth the upper crankcase components. Some large equipment uses two different smooth oils; one for the cylinder and the other for the other parts that need to be smooth. Because the cylinder smooth oil must coexist with the gas; it is necessary to be compatible with the downward flow process. Cylinder smooth oil can be characterized as a unique gas or operating condition to provide a smoothing effect.
3. Screw-type compressors Screw-type squeezing machines are generally used to compact hydrocarbons and produce gases; flow pressures range from 1-25 bar g. They have many advantages; including improved compaction power, low outflow temperature, high reliability and simple mechanical structure Less protection is formed.
It is necessary for screw-type gas-tightening oils to have several functions. They are smooth bearings; provide a satisfactory seal between the screw and the frame; remove heat from the tightening process; wash away any particles in the compactor and protect the system from corrosion The lower viscosity constraint is 10-20 cSt; the oil supply temperature to the bearing and 5 cSt are required to ensure proper sealing. The upper smooth oil viscosity depends on the ability to supply a satisfactory smooth oil to the bearing. Typical upper part The viscosity constraint is 30-100 cSt. The general ISO 68-220 smooth oil is satisfactory for the viscosity of the screw-type compactor. The exact viscosity grade depends on the operating conditions and the composition of the gas flow.
Because of the closed-loop depiction of the system; the composition of the product is uniquely applicable to the screw-type compactor. The smooth oil and the tight gas enter the separator. The separated oil is returned to the compactor through an oil cooler. In this process, the degradation of the smooth oil can cause Bearing problems; seal failure or corrosion and other tightening machine problems. In many applications; the use of the composition of the smoothing oil can form a useful hydrocarbon compaction and production gas.
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