IMPULSE TURBINE WITH ROTOR BLADE FOR PREVENTION AGAINST CLEARANCE FLOW LOSS

摘要

An impulse turbine is provided to increase fluid efficiency by preventing a decrease in the pressure of a rotor blade caused due to the leakage of fluid through the clearance of a rotor blade end. A duct groove(6) is formed at a circular duct(1), and a first stator blade portion(9) with a plurality of first stator blades(2) arranged on an outer surface of a first stator shaft(5) is located at a center shaft of the duct. A rotor blade portion with a plurality of rotor blades(3) arranged on an outer surface of a rotating shaft(4) is located at the center shaft of the duct. The rotor blade portion is arranged to contact one side of the first stator blade portion. A second stator blade portion(10) with a plurality of second stator blades arranged on an outer surface of a second stator shaft is located at a center shaft of the duct. The second stator blade portion is arranged to contact one side of the rotor blade portion. A cylindrical width ring(7) having a size identical with the width of an end of the outer surface of the rotor blade is attached to the end of the rotor blade.