NATURAL-GAS TWO-STAGE CENTRIFUGAL BLOWER Russian patent published in 2006 - IPC F04D17/14 

FIELD: mechanical engineering; compressors.

SUBSTANCE: invention relates to design of natural-gas two-stage centrifugal blowers furnished with input regulating device to regulate its characteristics. Invention solves the problem of changing characteristics of blower, namely: head-flow rate, efficiency at constant speed of rotation of blower rotor, and provision of quick assembling of blower and replacing of pack, in case of necessity. Design peculiarities of said blower are making of blade diffusers of each stage detachable, and making of shaft of electric drive in input regulating device passing through blade diffuser of first stage only, and making of one of blades of first stage blade diffuser 1.2-2 times thicker than other blades of blade diffuser for its mounting.

EFFECT: possibility of changing characteristics of lower.

4 dwg