DEVICE FOR COOLING STEAM TURBINE SETTING MEMBERS

摘要

mechanical engineering; steam turbines. SUBSTANCE: device has cooling steam supply branch pipe connected to main distributing manifold secured on outer surface of end sealing holder. End sealing communicates with cooling steam supply chamber arranged between end sealing holder, turbine housing and rotor disk. This chamber communicates through disk axial holes with inter-stage chamber found between rotor disk and cooled diaphragm. Additional manifold with cooling steam supply branch pipe and outlet branch pipes is connected to outer surface of cooled diaphragm. Chambers are made on side surfaces of working blade butt joint. Ring chamber and radial channels connecting ring chamber with axial holes are made in stage rim and disk body. EFFECT: increased intensity of blade and disk rim metal cooling in most thermally stressed stages of turbine. 3 dwg