DOUBLE-CONTROL HYDRAULIC TURBINE WHEEL (VERSIONS) Russian patent published in 2006 - IPC F03B3/14 

FIELD: hydroelectric stations.

SUBSTANCE: invention relates to hydroelectric station with vertical reactive hydraulic turbines. Proposed wheel has upper rim made in form of ring, fairling stationary connected with upper rim, cascade of turnable blades with upper journals, upper units of turning, sealing and axial locking of each of turnable blades installed on upper rim, cover secured on said rim and flange of shaft of hydraulic turbine, lower rim in form of radially axial ring, lower journals of turnable blades, lower units of blade turning and axial locking of lower rim, each being arranged in rim and provided with bearing consisting of split housing secured by split connection with locking pins n bore of lower rim, split friction inserts with screws for fixing them in housing, ring damping member to take forces and installed in end face slot of lower journal, fixed blades cascade connected by upper end faces with lower rim with periphery end faces being open. According to other design version, outer annular rim is installed under cascade of fixed blades being non-detachably connected with periphery end faces of said blades.

EFFECT: increased efficiency, provision of high speed, and enlarged range of tolerable modes of operation.

3 cl, 4 dwg