Geothermal turbine

摘要

A geothermal turbine is disclosed. In one embodiment of the invention the geothermal turbine comprises a turbine casing, a rotor shaft, a plurality of nozzle diaphragm outer rings fixed to the turbine casing, a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings, a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage, and a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction. Each rotor blade includes a plurality of cover pieces connecting tip portions of adjacent blades, where each cover piece includes a first tenon protruding from one side of the cover piece and a first tenon hole on an opposite side of the cover piece. The first tenon is inserted into a second tenon hole, which is located on a tip portion of a first blade. A second tenon protrudes from a second blade next to the first blade, and is inserted into the first tenon hole. The blade is continuously coupled 360 degrees around a wheel. (62) Divided Out of 554814