| 摘要 |
A turbine of an organic Ranking cycle ORC is described. The turbine comprises a shaft supported by at least two bearings and a plurality of axial stages of expansion, defined by arrays of stator blades alternated with arrays or rotor blades. The rotor blades are sustained by corresponding supporting disks. A main supporting disk is directly coupled to the shaft in an outer position with respect to the bearings, and the remaining supporting disks are constrained to the main supporting disk, and one to the other in succession, but not directly to the shaft. The proposed solution allows a cantilevered configuration of the turbine to be obtained while still having a plurality of stages, even more than three if desired. The turbine allows to expand the working fluid with high enthalpy jump similar to that obtainable by the conventional multistage axial turbines, which are not cantilevered, or by two coupled axial turbines, other conditions being unchanged. Some of the remaining supporting disks are constrained to the main supporting disk and cantileverly extend from the same side of the bearings that support the shaft, so that the center of gravity of the rotor part of the turbine is more shifted towards the bearings. |
