EP2723996A1 - Verfahren zur temperaturausgleichung in einer dampfturbine - Google Patents
Verfahren zur temperaturausgleichung in einer dampfturbineInfo
- Publication number
- EP2723996A1 EP2723996A1 EP12745820.6A EP12745820A EP2723996A1 EP 2723996 A1 EP2723996 A1 EP 2723996A1 EP 12745820 A EP12745820 A EP 12745820A EP 2723996 A1 EP2723996 A1 EP 2723996A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- sealing
- steam
- outer housing
- steam turbine
- 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
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
-
- 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
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/26—Double casings; Measures against temperature strain in casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
- F01K13/025—Cooling the interior by injection during idling or stand-by
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
- F01K7/165—Controlling means specially adapted therefor
-
- 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
Definitions
- the invention relates to a steam turbine comprising an outer ⁇ housing, a valve disposed within the outer housing inner ⁇ housing and a rotatable gela ⁇ siege within the inner housing rotor, wherein a gap is formed between the inner housing and the outer housing, wherein between the outer housing and the rotor has a Sealing vapor seal is thoroughlybil ⁇ det.
- the invention relates to a method for avoiding a housing bend of a steam turbine.
- the turbine housing of a steam turbine generally comprises an inner housing and an outer housing, wherein a gap is etcbil ⁇ det between the inner housing and the outer housing. These two housing parts in turn have an upper ⁇ half and a lower half, in high-pressure turbines, the outer housing is designed as a pot design. In particular, after switching off the steam turbine occur on and between the housings temperature differences, which may be several Kelvin between the lower half and the relatively hot surface.
- steam turbines have an inner housing and an outer housing surrounding the inner housing, wherein a gap is formed by this double-shell housing construction.
- the inner housing is at least partially surrounded by a casing in its axial extent, which is arranged in the intermediate space.
- the invention has for its object to prevent curvature of the outer casing, in particular when cooling the turbine, or at least to keep low. Furthermore, a method for avoiding a housing distortion when switching off the turbine should be specified.
- the first object is achieved by a steam turbine comprising an outer housing, an inner housing disposed within the outer housing and a rotatably mounted within the inner housing rotor, wherein between the Inner housing and the outer housing a gap is thoroughlybil ⁇ det, wherein between the outer housing and the rotor, a sealing vapor seal is formed, wherein the outer housing has an inflow opening for flowing from the sealing vapor in the intermediate space.
- the object directed to a method according to the invention is achieved by a method for preventing a housing bending of a steam turbine when switching off the steam turbine, wherein in a space formed between an inner housing and an outer housing surrounding the outer housing, a forced turbulence of the medium located in the intermediate space by an influx of Sealing vapor via an opening in the outer housing in the intermediate space.
- the invention is based on the consideration that a formation of temperature layers in the intermediate space is avoided by the injection of sealing vapor. This leads to a turbulence of the layers and thus to a reduction in the thermal stresses, which in turn reduces the curvature of the outer housing.
- the inflow opening is fluidically connected to the sealing vapor seal, which is a relatively ticagüns ⁇ term solution.
- a sealing steam line is formed which, on the one hand, allows inflow to the sealing vapor seal with sealing vapor and, moreover, has a branch, which is fluidically connected to the inflow opening.
- a steam turbine 1 shown in cross-sectional view, which comprises an outer housing 2 and an inner housing 3 arranged inside the outer housing 2.
- Inner ⁇ half of the inner housing 3, a rotor 4 is rotatably mounted about a rotation ⁇ axis 5. Between the inner housing 3 and the outer housing 4, a gap 6 is formed.
- the inner ⁇ housing 3 and the outer housing 2 can be divided into a first, upper portion, the upper half, and in a second, lower portion, the lower half, respectively.
- the steam turbine 1 further has a sealing region 7, which separates an outer space 8 from an inner space 9 of the steam turbine 1. Between the rotor and the outer casing 2 in the sealing region 7, no fluidic Ver ⁇ connection should be performed.
- the sealing region 7 has a sealing steam opening 10, which is designed such that a cold sealing steam, which can be supplied externally, can flow into a gap between the outer housing 2 and the rotor 4. With the help of so-called Wrasendampfabsaugungen 11, a mixed steam is sucked off again.
- the outer housing 2 has an inflow opening 13 for the flow of sealing vapor into the intermediate space 6.
- the inflow opening 13 is fluidically connected to the sealing steam opening 10.
- FIG. 2 shows a cross-section of the steam turbine 1 viewed in the direction of rotation axis 5.
- the inflow opening is disposed position in the outer casing 2 in a 12 o'clock. 13
- FIG. 1 shows a sealing steam line 14, in which sealing vapor is formed in a sealing space between sealing vapor seal 12 and rotor 4.
- sealing steam line 14 is shown in dashed lines. On a representation of the sealing steam line for the other shown in Figure 1 sealing steam openings 10 has been omitted for reasons of clarity.
- the sealing steam line 14 comprises a branch 16, which is fluidically connected to the inflow opening 13. To regulate the sealing steam flow in the branch 16, a valve 17 is arranged.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12745820.6A EP2723996B1 (de) | 2011-09-05 | 2012-08-03 | Verfahren zur temperaturausgleichung in einer dampfturbine |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11180026A EP2565401A1 (de) | 2011-09-05 | 2011-09-05 | Verfahren zur Temperaturausgleichung in einer Dampfturbine |
PCT/EP2012/065215 WO2013034377A1 (de) | 2011-09-05 | 2012-08-03 | Verfahren zur temperaturausgleichung in einer dampfturbine |
EP12745820.6A EP2723996B1 (de) | 2011-09-05 | 2012-08-03 | Verfahren zur temperaturausgleichung in einer dampfturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2723996A1 true EP2723996A1 (de) | 2014-04-30 |
EP2723996B1 EP2723996B1 (de) | 2019-10-16 |
Family
ID=46642506
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11180026A Withdrawn EP2565401A1 (de) | 2011-09-05 | 2011-09-05 | Verfahren zur Temperaturausgleichung in einer Dampfturbine |
EP12745820.6A Active EP2723996B1 (de) | 2011-09-05 | 2012-08-03 | Verfahren zur temperaturausgleichung in einer dampfturbine |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11180026A Withdrawn EP2565401A1 (de) | 2011-09-05 | 2011-09-05 | Verfahren zur Temperaturausgleichung in einer Dampfturbine |
Country Status (5)
Country | Link |
---|---|
US (1) | US9416684B2 (de) |
EP (2) | EP2565401A1 (de) |
JP (2) | JP5837204B2 (de) |
CN (1) | CN103764956B (de) |
WO (1) | WO2013034377A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106194284B (zh) * | 2016-07-22 | 2017-07-28 | 东方电气集团东方汽轮机有限公司 | 一种汽轮机夹层蒸汽参数调整及运行的方法 |
US11181041B2 (en) * | 2017-02-02 | 2021-11-23 | General Electric Company | Heat recovery steam generator with electrical heater system and method |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2815645A (en) * | 1955-03-01 | 1957-12-10 | Gen Electric | Super-critical pressure elastic fluid turbine |
JP3051560B2 (ja) | 1992-04-09 | 2000-06-12 | 三菱重工業株式会社 | 蒸気タービンにおける外車室上下半部間温度差の低減方法及び装置 |
WO1999017000A1 (de) | 1997-09-26 | 1999-04-08 | Siemens Aktiengesellschaft | Gehäuse für eine strömungsmaschine |
CN1119511C (zh) | 1998-08-18 | 2003-08-27 | 西门子公司 | 透平机壳体和避免其在关停透平机后发生弯曲变形的方法 |
JP2003148109A (ja) | 2001-11-12 | 2003-05-21 | Mitsubishi Heavy Ind Ltd | 蒸気タービン車室の変形量調整装置 |
JP2003254010A (ja) | 2002-03-01 | 2003-09-10 | Mitsubishi Heavy Ind Ltd | 蒸気タービン車室 |
JP2003328702A (ja) | 2002-05-14 | 2003-11-19 | Mitsubishi Heavy Ind Ltd | 蒸気タービンの内部強制冷却システム |
DE50312764D1 (de) * | 2003-03-06 | 2010-07-15 | Siemens Ag | Verfahren zur Kühlung einer Strömungsmaschine und Strömungsmaschine dafür |
JP4488787B2 (ja) * | 2003-04-30 | 2010-06-23 | 株式会社東芝 | 蒸気タービンプラントおよびその中圧タービンの冷却方法 |
US7003956B2 (en) | 2003-04-30 | 2006-02-28 | Kabushiki Kaisha Toshiba | Steam turbine, steam turbine plant and method of operating a steam turbine in a steam turbine plant |
JP4509664B2 (ja) * | 2003-07-30 | 2010-07-21 | 株式会社東芝 | 蒸気タービン発電設備 |
DE502004010299D1 (de) * | 2004-08-23 | 2009-12-10 | Siemens Ag | Dampfabführung zur kühlung der aussengehäuse in einer dampfturbine |
US20060233634A1 (en) * | 2005-04-18 | 2006-10-19 | General Electric Company | Method of indicating sealing steam temperature and related apparatus |
EP1998014A3 (de) | 2007-02-26 | 2008-12-31 | Siemens Aktiengesellschaft | Verfahren zum Betreiben einer mehrstufigen Dampfturbine |
EP2067933B1 (de) * | 2007-08-31 | 2011-11-16 | Siemens Aktiengesellschaft | Sicherheitskonzept für eine Dampfturbine |
JP5433183B2 (ja) | 2008-08-07 | 2014-03-05 | 株式会社東芝 | 蒸気タービンおよび蒸気タービンプラントシステム |
EP2261464A1 (de) * | 2009-06-09 | 2010-12-15 | Siemens Aktiengesellschaft | Turbomaschine |
US8545166B2 (en) * | 2010-07-28 | 2013-10-01 | General Electric Company | System and method for controlling leak steam to steam seal header for improving steam turbine performance |
EP2431570A1 (de) * | 2010-09-16 | 2012-03-21 | Siemens Aktiengesellschaft | Dampfturbine mit einem Schubausgleichskolben und Nassdampfabsperrung |
-
2011
- 2011-09-05 EP EP11180026A patent/EP2565401A1/de not_active Withdrawn
-
2012
- 2012-08-03 JP JP2014527568A patent/JP5837204B2/ja not_active Expired - Fee Related
- 2012-08-03 EP EP12745820.6A patent/EP2723996B1/de active Active
- 2012-08-03 US US14/241,273 patent/US9416684B2/en not_active Expired - Fee Related
- 2012-08-03 WO PCT/EP2012/065215 patent/WO2013034377A1/de active Application Filing
- 2012-08-03 CN CN201280043198.0A patent/CN103764956B/zh not_active Expired - Fee Related
-
2015
- 2015-05-12 JP JP2015097255A patent/JP5996717B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013034377A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP5837204B2 (ja) | 2015-12-24 |
US9416684B2 (en) | 2016-08-16 |
JP5996717B2 (ja) | 2016-09-21 |
JP2014525538A (ja) | 2014-09-29 |
EP2565401A1 (de) | 2013-03-06 |
EP2723996B1 (de) | 2019-10-16 |
CN103764956A (zh) | 2014-04-30 |
WO2013034377A1 (de) | 2013-03-14 |
CN103764956B (zh) | 2015-11-25 |
US20140366538A1 (en) | 2014-12-18 |
JP2015148232A (ja) | 2015-08-20 |
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