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Air compressor analysis
Author: 志和      Release Date:2014/7/1      View Count:2075
 

What is the compressor? What is the principle of air compressor? The air compressor can be used to do what? How to select the compressor? How to make the air compressor maintenance program?

To understand the air compressor, first we have to know what is the compressor?

Air compressor air compressor is the name, is the main gas source device,which is the original motivation (usually a motor) converts the mechanical energy of the gas pressure to the device, is the pressure of compressed airgenerator.

What is the air compressor working principle?

Directly driven by motor compressor, so that the crankshaft rotating, the piston reciprocating motion to drive the connecting rod, causing the cylindervolume change. Owing to the change in cylinder pressure, through the intake valve to make the air through the air filter (silencer) into the cylinder, on the compression stroke, the cylinder volume reduction, compressed air through the exhaust valve, exhaust pipe, a one-way valve (check valve) into the gas tank, when the discharge pressure reaches the rated pressure of 0.7MPa bypressure switch control and automatic shutdown. When the tank pressure to 0.5--0.6MPa pressure switch automatic connection start.

Why do we have to learn to choose the compressor? Because the air compressoris often not a single, so what are the types of air compressor?

Many kinds of air compressor, according to the working principle can bedivided into the compressor, reciprocating compressor, centrifugal compressor.

Now commonly used air compressor piston type air compressor, screw type air compressor (screw air compressor is divided into a double screw air compressor and single screw air compressor), centrifugal compressors andsliding vane air compressors, scroll air compressor.

How to select the compressor?

Firstly, according to the characteristic of the air compressor requirements,select the type of air compressor. According to the need of pneumatic systemworking pressure and flow, two parameters, determines the output pressure of PC air compressor and the suction flow rate QC, the final selection of air compressor model. The main basis for the choice of pneumatic system of air compressor working pressure and flow. Source of the working pressure shall bemoving around in the system is 20% higher than the highest working pressure of gas, because of the need to consider gas pipeline loss along the. If somelocal system working pressure is low, can be used to supply gas pressure reducing valve. Rated discharge pressure air compressor is divided into low pressure (0.7~1.0MPa), medium (1.0~10MPa), high voltage (10~100MPa) and ultrahigh voltage (above 100MPa), can choose according to the actual demand.Common use of pressure is 0.7-1.25.

Air compressor have what use?

Air compressors use

The compressed air as the power to drive the various pneumatic machinery:such as pneumatic tool discharge pressure is 7 ~ 8 kg / cm2, used to control instrumentation and automation equipment, pressure of about 6 kg / cm2,automatic vehicle, windows and doors opening and closing, pressure is 2 ~ 4 kg / cm2, the pharmaceutical industry, stirring in the wine industry, the pressure of 4 kg / square cm, weft in jet loom blowing pressure is 1 ~ 2 kg /cm2, in the large diesel engine start-up pressure is 25 ~ 60 kg / cm2, oil well fracturing, pressure is 150 kg / cm2, the "two" oil, a pressure of approx. 50 kg / square cm, pressure blasting mining pressure of about 800 kg / cm2, the defense industry pressure compressed air as the power. The ups and downs of submarine, torpedo shooting and driving and wreck salvage and so on,all with different pressure of compressed air as the power.

Air compressor uses two

Compressed gas for the separation of gas refrigeration and gas compression,cooling, expansion and liquefaction, for artificial refrigeration(refrigeration and air conditioning etc.) such as ammonia or Freoncompressor. The compression pressure is 8 ~ 12 kg / cm2, this type ofcompressor often become "refrigerator" or "ice machine". In addition,liquefied gas for mixed gas, can be in the separator, the components wereseparated, various gas lip reading to get qualified. Such as air liquefaction separation to obtain the pure oxygen, pure nitrogen and pure xenon, krypton,argon, helium and other noble gases.

Air compressor uses three

Compressed gas for synthesis and polymerization: in the chemical industry,gas is compressed to a high pressure, often favorable synthesis andpolymerization. For example, nitrogen and hydrogen in ammonia, hydrogen and carbon dioxide, carbon dioxide and methanol synthesis ammonia urea etc.. In the chemical industry, such as high pressure polyethylene pressure up to 1500~ 3200 kg / square cm.

Air compressor uses four

Gas supply: compressor for pipeline gas, pipeline length determines thepressure as. Send remote gas, pressure of 30 kg / square cm. Chlorine bottlepressure is 10 ~ 15 kg / cm2, carbon dioxide bottle pressure is 50 ~ 60 kg /square cm.

In order to make the air compressor can be normal and reliable operation,ensure the life of unit, shall formulate detailed maintenance plan, executepeople operations, maintenance, regular inspection and maintenance, the air compressor is kept clean, no oil, no dirt. How to maintain air compressor?

A Zhou Baoyang, the air compressor:

A. inspection unit has no abnormal noise and leakage;

B check the meter reading is correct;

C. check the temperature display is normal.

B, air compressor maintenance:

If there is rust, loose place A. to check the machine, such as rust, rust oilor paint, loosening tight;

B. discharge of water condensation.

C Ji Baoyang, the air compressor:

Dust removal of A. cooler outer surface and the fan cover, fan blade;

B. lubricating oil to the motor bearings;

C. check the hose without aging, cracking phenomenon

 
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