Through analysing the struction and theory of explosion screw air compressor for coal mine,analysing the safety and economic of the system in usage in front and back,points out the importance that system in the modern well to produce and fix.

Analyzes the oprating problems of Screw rod type air compressors of Yinchuan Cogeneration Power Plant, puts forward solution measures,that raises the efficiency of screw rod type air compressors.

Research on technical claims about items of testing and verify of screw air compressor in coal mine;

This paper compared the operations of common screw air compressor with conversion frequency screw compressor,analyzed the economic benefits of energy conservation transformation for screw air compressor,at the same time,proposed the technical program of the transformation.

Application of screw air compressor oil on electric locomotives;

Screw air compressor oil is developed to meet the requirement that the new type railway passenger locomotive be equipped with screw air compressor.

Aptitude controller of screw air compressor jointly developed by the author and certain air compressor factory are studied.

Througheut comparing screw air compressor oil that we developed independently with Shell Corena RS_(32) in physico-chemical performances we drawed the conclusion that screwair compressor oil show choice is superior to Shell Corena RS_(32) in some performance index and can be applied safely in the electric locomotive.