Attend one class: Pneumatics machine 015 of 100 classes: Cubage type - the structure of blade machine, vortex machine, principle and actor defect

In the circumstance using gas of large flow, doing not have exception is the world that centrifugal or axis shed compressor almost. Especially in petro-chemical industry, centrifugal is one of crucial equipment.

? Centrifugal type compressor applies to generally: Discharge / pressure 100~2000m3/min, 0.07~70MPa;

? The axis sheds type compressor to apply to generally: Discharge / pressure 1000~20000m3/min, 0.3~0.7MPa.

(because axial shedding compressor is too large, we are contacted rarely commonly get, reason has been taken simply)

Centrifugal type and axis shed type compressor to belong to speed type(also call motivation type) the category of compressor, the principle is to pass gas to quicken pressure of then translate into can, and what do work quickly to gas is gyral impeller (blade) , reason often also is called turbine compressor.

QiAir Compressor in China

The moving characteristic of centrifugal compressor:

①Below certain rotate speed, the pressure of compressor becomes inverse ratio than be the same as discharge;

②Below certain rotate speed, when discharge is rated discharge, the efficiency of compressor is highest, when discharge is more than and be less than this value, efficiency will drop, this rated discharge is namelyDesign operating mode place.

③Compressor carry is breathed heavily all right brace up operating mode and jam the limitation of operating mode, in this both between the area of steady working condition that calls centrifugal compressor.

* measures one of main index of bad of actor of function of a centrifugal compressor, ask to there are highest efficiency and higher pressure to compare below rated discharge not only, have range of wider steady working condition even.

④The progression of compressor is more, criterion the impact that aeriform density changes is bigger, the function curve of compressor is steeper, area of steady working condition is narrower.

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