Two Stage Rotary Screw Compressor Manufacturer

Two Stage Rotary Screw Compressor

: http://vsd-compressor.com/2-1-two-stage-rotary-screw-compressor.html

Description

Equipped with a high-accuracy screw, the two stage rotary screw compressor runs stably, with the main power range from 132kw to 355kw, the air pressure ranges from 6bar to 13bar and the air flow range from 35m³/min to 54m³/min.

Parameters

Model	Power (kw)	Air flow/Discharge pressure (m³/min) / (Mpa)					Weight (kg)	Diameter
MFD-132A	132	35.0/0.6	28.5/0.7	28.0/0.8			4140	DN80
MFD-160A	160	37.0/0.6	35.5/0.7	35.0/0.8	28.8/1.0		4220	DN80
MFD-185A	185	40.4/0.6	37.5/0.7	37.0/0.8	35.0/1.0	28.0/1.25	4400	DN80
MFD-200A	200		40.9/0.7	40.4/0.8	37.0/1.0	35.0/1.25	4700	DN100
MFD-220A	220		50.0/0.7	46.0/0.8	39.0/1.0	33.0/1.25	7950	DN125
MFD-250A	250		54.0/0.7	51.0/0.8	41.0/1.0	39.0/1.25	8350	DN125
MFD-280A	280		60.0/0.7	57.0/0.8	49.5/1.0	43.0/1.25	8550	DN125
MFD-315A	315		67.0/0.7	62.0/0.8	56.0/1.0	51.0/1.25	9000	DN125
MFD-355A	355		73.0/0.7	69.0/0.8	61.0/1.0	54.0/1.25	10000	DN125

Features

The same pressure ratio is used at each step of the two stage compression and interstage pressure is set to lower each stage's pressure ratio than single-stage one, which reduces the backflow leakage among rotors and improves the volumetric efficiency and adiabatic efficiency.
After the first-stage compression, the air is cooled by oil injection in the interstage, reducing the second-stage suction temperature. The whole compression is near isothermal, which can reduce the power of compression effectively. In this case, the two stage rotary screw air compressor with single permanent magnet motor drive can save 15% energy at same circumstance compared with single screw compressor.
Equipped with big rotor, the airend has a low speed and low noise design.
Integrated housing design, which has two independent compression units inside, has improved the installing accuracy of the first and second stage.
The helical gear's direct driving has got best speed ratio for each rotor.

Related
industrial air compressor, rotary screw compressor