| 摘要 |
<p>HP turbine module with rotor wheel with intake of steam with very high characteristics including zones of different designs adapated to the pressure and temperature levels. - Zone A located on the steam intake side includes an assembly consisting of rotor (1), diaphragms (8), internal spool (18), and intake packing carriers (14) which are perfectly isotropic, without a break in the horizontal seal. - The zone P located on the exhaust side where the internal spool (19), produced in two parts, is coupled to the internal spool (18) of the zone A. The internal spool (19) of the zone P may be isotropic and shrunk-on or nonisotropic or bolted. In the zone A the fins (3) are mounted either in axial grooves (31) or in circumferental grooves, while in the zone P, for simplification, the grooves (16) are chosen to be circumferential. Advantage: transverse decrease in the module owing: - to the rotor wheel (1), - to the isotropic front internal spool (18), - to the elimination of the third casing on the intake side. <IMAGE></p> |
