# US 2021/0277801 A1 · Outflow housing of a steam turbine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0277801 A1 - Document ID: US20210277801A1 - Status: Published application - Kind: A1 - Application number: 16/326,447 - Filed: 2017-07-04 - Published: 2021-09-09 - Earliest claimed: 2016-08-23 - Assignees: Siemens Aktiengesellschaft - Applicants: Siemens Aktiengesellschaft - Inventors: Robert Hilleke; Stefan Preibisch - Web page: https://patentgrep.com/patent/US20210277801A1 ## CPC - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - F01D 25/26: Double casings; Measures against temperature strain in casings - F01D 11/003: {by packing rings; Mechanical seals} - F01D 11/005: {Sealing means between non relatively rotating elements} - F01K 7/22: the turbines having inter-stage steam heating - F05D 2220/31: in steam turbines - F05D 2240/55: Seals - F05D 2260/941: particularly aimed at mechanical or thermal stress reduction - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F01K: STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; nuclear power plants, engine arrangements therein G21D) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract An outflow housing for a turbine section of a steam turbine. The outflow housing has an outflow housing wall, which surrounds a central drum chamber along a housing longitudinal axis, and a connection interface for connecting the outflow housing to a turbine housing of the steam turbine. A sealing device for sealing an end of the outflow housing, which end is arranged at the rear in the flow direction, with respect to a turbine shaft of the steam turbine is arranged on the outflow housing wall, wherein the sealing device is sealed to the outflow housing wall. A steam turbine has the outflow housing herein. ## Claims ### Claim 1 An outflow housing for a turbine section of a steam turbine, comprising: an outflow housing wall, which surrounds a central drum chamber along a housing longitudinal axis, and an attachment interface for the attachment of the outflow housing to a turbine housing of the steam turbine, and a sealing device arranged on the outflow housing wall for sealing off a rear end, as viewed in a flow direction, of the outflow housing with respect to a turbine shaft of the steam turbine, wherein the sealing device is sealed off with respect to the outflow housing wall. ### Claim 2 (depends on 1) The outflow housing as claimed in claim 1, wherein the outflow housing wall has a receiving device for receiving the sealing device. ### Claim 3 (depends on 1) The outflow housing as claimed in claim 1, wherein the outflow housing wall has at least one outflow channel which at least partially surrounds the housing longitudinal axis, and wherein at least one outflow connector is arranged for fluid communication on the outflow channel, which at least one outflow connector extends transversely with respect to the housing longitudinal axis and is designed for conducting steam. ### Claim 4 (depends on 3) The outflow housing as claimed in claim 3, wherein the sealing device is arranged on the outflow housing wall at a side, facing toward the housing longitudinal axis, of the at least one outflow channel and adjacent to the outflow channel. ### Claim 5 (depends on 1) The outflow housing as claimed in claim 1, wherein the attachment interface is formed on an outer side, averted from the central drum chamber, of the outflow housing wall. ### Claim 6 (depends on 5) The outflow housing as claimed in claim 5, wherein no attachment interface for the attachment of the outflow housing to the turbine housing of the steam turbine is formed on the outflow housing adjacent to the sealing device in a radial direction. ### Claim 7 (depends on 5) The outflow housing as claimed in claim 5, wherein the attachment interface surrounds or at least substantially surrounds the housing longitudinal axis. ### Claim 8 (depends on 1) The outflow housing as claimed in claim 1, wherein an inner side, facing toward the drum chamber, of the outflow housing wall has at least one guide blade ring. ### Claim 9 (depends on 1) A steam turbine comprising: a first turbine section, a second turbine section and a turbine housing which surrounds the first turbine section and the second turbine section, wherein the first turbine section is coupled for fluid communication to the second turbine section via a reheating device, and an outflow housing as claimed in claim 1 arranged within the turbine housing at a rear end region, in the flow direction of the steam turbine, of the first turbine section. ### Claim 10 (depends on 9) The steam turbine as claimed in claim 9, wherein the outflow housing is arranged on the steam turbine such that a steam mass flow flowing through the central drum chamber impinges on the turbine housing only after flowing through the reheating device positioned downstream of the outflow housing. ### Claim 11 (depends on 9) The steam turbine (3) as claimed in claim 9, wherein the outflow housing is held on the turbine housing by the attachment interface.