SINGLE-RIM TURBINE WITH PRESSURE STAGES Russian patent published in 2005 - IPC

FIELD: mechanical engineering; turbines.

SUBSTANCE: proposed turbine has nozzle to deliver fresh working medium, active blade and bypass device for successive delivery of working medium from stage to stage consisting of bypass channels made with successively increasing sizes from first stage to last stage. Turbine is furnished additionally with diaphragm for fastening bypass device. Bypass channels consist of turnable part, directly connected to inlet hole made in diaphragm, and outlet part. Profile of turnable part is made in form of curvilinear asymmetrical contraction tube. Outlet part has profile in form of straight-line asymmetrical diffuser with angle of tilting of profile walls corresponding to inlet angle of working blades. Bypass device contains additionally deflectors installed in turnable part of bypass channels. Main profile wall of turnable part of bypass channel is made with configuration depending on sizes of bypass channel of said pressure stage found from system of equations protected by said invention.

EFFECT: reduced turbulization of working medium flow and aerodynamic drag in bypass channels.

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