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Q & a series of technical problems of air compressor (twelve)
Author: 志和      Release Date:2014/5/24      View Count:2181
 

"Q & a series of technical problems of air compressor (eleven)" refer to: http://www.dg-zhihe.com/cn/newsshow.asp? Id=431

Small make up: air compressor explosion and oil pressure of the oil have relations?

Chi and Technology Master: air compressor explosion in addition to mechanicalfactors, may also be caused by oil, and usually is because oil serious carbon deposit,the air compressor exhaust hole blocked, resulting in internal high pressure air compressor results.

Small make up: why should strictly control the inlet temperature of air compressor?

Chi and Technology Master: intake air temperature, air compressor, will cause theexhaust temperature is too high, will accelerate the oxidation of lubricating oil, to accelerate the generation of carbon deposition. Serious word still can cause fire or explosion of compressed air conveying system. The inhalation of thin and high temperature air, can make the efficiency drops. Therefore, the air inlet temperatureshould be strictly controlled press.

Small make up: coke deposition in air compressor is formed?

Chi and Technology Master: coke formed in air compressor is very complex, and there are many reasons, on the oil, is the main air compressor internal lubrication system oiloften in the form of fog and high temperature, high pressure, high oxygen partial pressure of the air and the metal catalyst contact, make the oil rapid oxidation, on the other hand, the oil continuous evaporation of the heavier components oil residue on the top of the piston, valve chamber and exhaust pipeline in the continuous thermal decomposition, dehydrogenation polymerization. The product with the inhaled airmechanical impurities and air compressor internal metal wear debris mixed together,deposition is further heated in the body surface, which become the coke.

Small make up: air compressor carbon deposit have what harm?

Chi and Technology Master: when the coke compressors produce more exhaust valveand exhaust pipe in the exhaust valve will, action is not flexible and not tightly closed,resulting in exhaust gas reflux cylinder and repetitive compression (i.e. two compression), so that the gas temperature rises rapidly, high gas temperaturesexacerbated by the oxidation of lubricating oil, the reaction heat can not be released,so that the gas exhaust pipe temperature continues to rise. When the temperature reaches the natural point of lubricating oil, lubricating oil in the carbon accumulated inburns. Products of incomplete combustion, thermal decomposition product oil, oil mist and air gas in the form of gas explosion, an explosion occurred, therefore, the explosion caused by coke burning is a huge threat to the safe operation of the aircompressor.

Small make up: coking tendency of air compressor lubricating oil?

Chi and Technology Master: asphaltene in lubricating oils, resins and PAHs incomposite materials is the main material of carbon residue. Therefore, carbon residueis indirect index gelatinous substance in oil and unstable compounds. Carbon residueis greater, instability in oil hydrocarbons and colloidal matter more; on the contrary,the less. According to the char size, can roughly determine the tendency of oil in the compressor carbon deposit. For lubricating oil, carbon residue value can indirectlyindicate the degree of refining lubricating oil, lubricating oil refining more deeply,carbon residue value is smaller. So we have been speaking in front of the importance of the selection of air compressor oil!

Small make up: the importance of air compressor oil suitable? Using the ratio of base oil and quality?

Chi and Technology Master: the use of double screw air compressor oil, base oil tomore than 95% of refined oil ratio, so the base oil quality can be directly considered the quality of air compressor oil, refined depth is an important factor affecting the quality of base oil. So we choose compressor oil, must be on the oil analysis. Choose the suitable machine oil.

Small make up: what are the same point oil pour point and different point?

Chi and Technology Master: pour point is that low temperature properties of the oil,but the methods for determining their different. Pour point is under specified conditions, the minimum temperature of the sample was cooled to flow, determination method for GB/T 3535. But the point is the sample under specified conditions, the highest temperature is cooled to stop the flow, determination method for GB/T 510. In general, the base oil of different sources, different processing methods, different processing methods the pour point and pour point are not corresponding to the two.Because the pour point can reflect the low temperature fluidity, more than the freezing point so, domestic and international air compressor oil standard using pour point.

Small make up: why air compressor oil oxidation resistance and corrosion resistanceto high?

Chi and Technology Master: as always in high temperature and high pressure air compressor in the long-term use of the environment, so the air compressor oil is easy to be oxidized to produce metamorphic, produce a variety of acids, so that oil acid value increased, but also the sediment, will cause the oil injection quantity reduce,host and oil temperature it will lift and produce larger wear. So it will trigger a series ofchain problem, a long time, the machine is always prone to the problem. And thecorrosion resistance of air compressor oil is also very important, component coolingtreatment equipment usually seen for the majority of the copper or a copper alloy,when the parts are corroded, the oil will also appear the oxidation.

Reminder.

Chronicles and the electromechanical device limited company to recommend air compressor, water heater, air compressor heat recovery equipment, as long as youhave the air compressor factory, can 0 operation cost of producing hot water andheating.

See details > >

(this paper mainly analyzes the series of technical problems of air compressor quiz,but in actual in the problem solving process is for reference only.)

 
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