STEAM TURBINE CYLINDER Russian patent published in 2003 - IPC

FIELD: turbines. SUBSTANCE: cylinder for steam turbine has housing of exhaust branch pipe with built-in bearing and end seal of turbine rotor. End seal has housing with horizontal split at least upper half of which is detachably connected with support ring of exhaust branch pipe from side of bearing. Vertical ring horizontally split walls connected with housing of end seal carry shell with sealing segments of end seal compartments. Shell consists of at least two separate parts, one of which carrying sealing segments of first compartment of end seal from side of exhaust branch and partially arranged inside exhaust branch pipe is connected with first vertical wall from side of branch pipe. Upper halves of end seal housing and first vertical ring wall of end seal from side of exhaust branch space are arranged behind plane of connection of end seal housing and support ring. At least first vertical ring wall is connected for sliding with end seal housing. To provide base of fastening of end seal housing on support ring for turbines installed on stations, intermediate half-ring can be placed between support ring and at least upper half of end seal housing. Said intermediate half-ring is rigidly connected with support ring, and housing of end seal is detachably connected with intermediate half-ring and support ring by fasteners. Invention makes it possible to replace and re- adjust segments when turbine is shut down without removing cover of cylinder housing at any distance between end seal and bearing, and to replace one compartment of sealing segments without demounting of members of other compartments. EFFECT: facilitated repair of end seal. 1 dwg