FIELD: hydraulic engineering, particularly for passing maximal flood water volumes when it is impossible to transmit thereof through hydroelectric generator.
SUBSTANCE: structure comprises water discharge orifice with gate, hydraulic generator unit with turbine chamber connected with deep -seated water line by suction tube leading to waterway chute located in upper part of hydraulic generator unit and provided with duplicate gate. Opening is formed in deep -seated water line located in area of abutment thereof to turbine chamber. Additional gate is installed in the opening. Water discharge orifice is connected with the opening and waterway chute. Curtain wall forming deep -seated water line is installed in water discharge orifice area. Additional gate is made as a valve with two-sided lining pivotally connected with turbine chamber roof part. Bulwark may be detachably installed in front part of the structure.
EFFECT: increased operational reliability due to prevention of discharged water entrance in waterway part of turbine chamber, possibility of structure connection to surface spillway structure, for instance to concrete dam.
2 cl, 1 dwg
