EP2598724A1 - Steam turbine and process for cooling such a steam turbine - Google Patents
Steam turbine and process for cooling such a steam turbineInfo
- Publication number
- EP2598724A1 EP2598724A1 EP11740595.1A EP11740595A EP2598724A1 EP 2598724 A1 EP2598724 A1 EP 2598724A1 EP 11740595 A EP11740595 A EP 11740595A EP 2598724 A1 EP2598724 A1 EP 2598724A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- rotor
- cooling
- flow channel
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D3/00—Machines or engines with axial-thrust balancing effected by working-fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/31—Application in turbines in steam turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/232—Heat transfer, e.g. cooling characterized by the cooling medium
- F05D2260/2322—Heat transfer, e.g. cooling characterized by the cooling medium steam
Definitions
- the invention relates to a steam turbine according to the
- Cooling steam is supplied externally. Via a corresponding feed line to the outer housing of the stator of the turbine, an outer housing cooling bore, a flow space between the outer and inner housings of the stator and an inner housing cooling bore, cooling steam is thus subjected to particularly high thermal stress
- This transverse line serves to additionally supply cooling steam to the live steam in the event of a sudden pressure drop in the live steam feed line in order thus to avoid an excessive differential pressure load between the region to be cooled and the inflow region of the flow channel.
- the object of the invention is to provide an improved steam turbine and an improved method for cooling such a steam turbine.
- Fresh steam from the flow channel can thus be supplied directly to the cooling steam. This leads to a thermodynamic coupling and thus to a steady
- additional sealing elements which are the thermally high claimed area, such as the m the stator engaging thrust piston of the rotor, of the
- the radial pressure balance downstream of a blade can be utilized for pressure equalization during operation of the turbine. Physically exists namely in the generated in the flow channel
- Pressure equalization cross-connection a space connection between live steam and cooling steam through which a
- Cooling steam excess can be emptied directly, so that the sealing elements are less stressed.
- the pressure equalization cross-connection is in
- Cooling steam supply can short passageways of the
- Inflow region 41 of the flow channel 4 is supplied.
- the so-streamed live steam then flows downstream in the
- the cooling steam supply 6 comprises in the present
- Internal cooling hole 64 is disposed in the inner housing 21 and provides a fluidic connection between the
- sealing elements Due to the pressure difference between cooling and live steam are to these sealing elements but to set particularly high demands. On the other hand, the sealing elements must also be designed so that they are "permeable" in the case of an emergency shutdown to rapidly reduce a cooling steam surplus.
- Pressure equalization transverse connection 7 between the flow channel 4 and the cooling steam supply 6 is provided.
- formed as a bore in the inner housing 21 of the stator 2 allows so that a part of the
- Fresh steam from the flow channel 4 is fed directly to the cooling steam. This creates a pressure equalization between Frischdampfhoffm anddedampfhoffm through this cross-connection. At the same time, the cross connection in case of
- the part of the live steam from the flow channel would then be supplied to the cooling steam only in this area.
- the pressure equalizing cross-connection as indicated in the figure, consist of a radially and an axially aligned region, but it could also be as a straight Bore obliquely through the inner housing from the flow channel to the inner housing cooling bore lead.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11740595.1A EP2598724B1 (en) | 2010-07-30 | 2011-07-18 | Steam turbine and process for cooling such a steam turbine |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10171447A EP2412937A1 (en) | 2010-07-30 | 2010-07-30 | Steam turbine and method for cooling same |
PCT/EP2011/062251 WO2012013531A1 (en) | 2010-07-30 | 2011-07-18 | Steam turbine and process for cooling such a steam turbine |
EP11740595.1A EP2598724B1 (en) | 2010-07-30 | 2011-07-18 | Steam turbine and process for cooling such a steam turbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2598724A1 true EP2598724A1 (en) | 2013-06-05 |
EP2598724B1 EP2598724B1 (en) | 2014-06-04 |
Family
ID=43304943
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10171447A Withdrawn EP2412937A1 (en) | 2010-07-30 | 2010-07-30 | Steam turbine and method for cooling same |
EP11740595.1A Not-in-force EP2598724B1 (en) | 2010-07-30 | 2011-07-18 | Steam turbine and process for cooling such a steam turbine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10171447A Withdrawn EP2412937A1 (en) | 2010-07-30 | 2010-07-30 | Steam turbine and method for cooling same |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP2412937A1 (en) |
JP (1) | JP5604684B2 (en) |
CN (1) | CN103052768B (en) |
WO (1) | WO2012013531A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102626851B (en) * | 2012-04-27 | 2014-07-02 | 上海电气电站设备有限公司 | High pressure guide vane carrier ring processing technology |
CN109184823B (en) * | 2018-11-06 | 2024-03-19 | 上海电气电站设备有限公司 | Steam turbine with steam supplementing structure and operation method thereof |
CN109826675A (en) * | 2019-03-21 | 2019-05-31 | 上海电气电站设备有限公司 | Steam turbine cooling system and method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19620828C1 (en) * | 1996-05-23 | 1997-09-04 | Siemens Ag | Steam turbine shaft incorporating cooling circuit |
JP4064532B2 (en) * | 1998-06-05 | 2008-03-19 | 三菱重工業株式会社 | Steam turbine outer casing cooling structure |
EP1445427A1 (en) * | 2003-02-05 | 2004-08-11 | Siemens Aktiengesellschaft | Steam turbine and method of operating a steam turbine |
EP1674669A1 (en) * | 2004-12-21 | 2006-06-28 | Siemens Aktiengesellschaft | Method of cooling a steam turbine |
EP1785586B1 (en) * | 2005-10-20 | 2014-05-07 | Siemens Aktiengesellschaft | Rotor of a turbomachine |
EP1780376A1 (en) * | 2005-10-31 | 2007-05-02 | Siemens Aktiengesellschaft | Steam turbine |
CN2833117Y (en) * | 2005-11-04 | 2006-11-01 | 哈尔滨汽轮机厂有限责任公司 | Supercritical steam turbine of high and medium pressure cylinder with rotor cooling structure |
EP1788191B1 (en) * | 2005-11-18 | 2014-04-02 | Siemens Aktiengesellschaft | Steam turbine and method of cooling a steam turbine |
ATE533922T1 (en) | 2007-08-31 | 2011-12-15 | Siemens Ag | SAFETY CONCEPT FOR A STEAM TURBINE |
-
2010
- 2010-07-30 EP EP10171447A patent/EP2412937A1/en not_active Withdrawn
-
2011
- 2011-07-18 EP EP11740595.1A patent/EP2598724B1/en not_active Not-in-force
- 2011-07-18 WO PCT/EP2011/062251 patent/WO2012013531A1/en active Application Filing
- 2011-07-18 JP JP2013520110A patent/JP5604684B2/en not_active Expired - Fee Related
- 2011-07-18 CN CN201180037593.3A patent/CN103052768B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2012013531A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2598724B1 (en) | 2014-06-04 |
CN103052768B (en) | 2015-07-22 |
JP5604684B2 (en) | 2014-10-15 |
CN103052768A (en) | 2013-04-17 |
JP2013531182A (en) | 2013-08-01 |
EP2412937A1 (en) | 2012-02-01 |
WO2012013531A1 (en) | 2012-02-02 |
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