BLADED MACHINE WITH IMPROVED COMPENSATING PISTON SEAL Russian patent published in 2012 - IPC F04D29/10 

FIELD: machine building.

SUBSTANCE: bladed machine includes outer housing with inner housing located in it and impeller shaft located in it, cover plate that is fixed on outer housing and has the possibility of separating the inlet pressure inside outer housing from ambient pressure outside it, and compensating piston seal for non-contact sealing of outlet pressure in working chamber formed between impeller shaft and inner housing, namely compression chamber from inlet pressure; at that, compensating piston seal is fixed on the cover plate.

EFFECT: reduction of dynamic forces between rotor and stator by choosing the installation place of dry gas seal.

12 cl, 5 dwg