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1. (WO2018157957) TURBINE CASING AND METHOD FOR ASSEMBLING A TURBINE HAVING A TURBINE CASING

Pub. No.:    WO/2018/157957    International Application No.:    PCT/EP2017/081194
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Sat Dec 02 00:59:59 CET 2017
IPC: F01D 11/00
F01D 25/24
F02C 7/28
Applicants: SIEMENS AKTIENGESELLSCHAFT
Inventors: BLESSING, Alexander
ROLLE, Mario
Title: TURBINE CASING AND METHOD FOR ASSEMBLING A TURBINE HAVING A TURBINE CASING
Abstract:
The invention relates to a turbine casing (1) for a turbine, in particular a steam turbine, having a front casing segment (3), which is formed around a turbine longitudinal axis (2) and has a first front casing part-segment (3a) and a second front casing part-segment (3b), and a rear casing segment (4), which is formed around the turbine longitudinal axis (2) and has a first rear casing part-segment (4a) and a second rear casing part-segment (4b). The rear casing segment (4) is arranged downstream of the front casing segment (3) in the direction of flow (D) and is fastened to the front casing segment (3) via a rear vertical flange (6) of the rear casing segment (4) and a front vertical flange (7) of the front casing segment (3), forming a cross-shaped joint (5). According to the invention, a protrusion (8) which surrounds the turbine longitudinal axis (2) is formed on the front casing segment (3) in a region of the front vertical flange (7) and extends parallel or at least substantially parallel to the turbine longitudinal axis (2) and protrudes from the front vertical flange (7) in the flow direction (D). A circumferential seal device (10) is situated on an outer side (9), facing away from the turbine longitudinal axis (2), of the protrusion (8), said seal device sealing the protrusion (8) against the rear casing segment (4). The invention also relates to a method for assembling a turbine having a turbine casing according to the invention.