WO1997008431A1 - Verfahren und vorrichtung zur kühlung einer niederdruck-teilturbine - Google Patents
Verfahren und vorrichtung zur kühlung einer niederdruck-teilturbine Download PDFInfo
- Publication number
- WO1997008431A1 WO1997008431A1 PCT/DE1996/001506 DE9601506W WO9708431A1 WO 1997008431 A1 WO1997008431 A1 WO 1997008431A1 DE 9601506 W DE9601506 W DE 9601506W WO 9708431 A1 WO9708431 A1 WO 9708431A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coolant
- low
- turbine
- steam
- pressure
- Prior art date
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
- 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
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
- F01D19/02—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith dependent on temperature of component parts, e.g. of turbine-casing
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/04—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator or to breaking-off of a part of the rotor, e.g. indicating such position
- F01D21/06—Shutting-down
-
- 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
- F01D25/12—Cooling
-
- 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
- F05D2240/00—Components
- F05D2240/10—Stators
-
- 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
- F05D2260/97—Reducing windage losses
Definitions
- the invention relates to a method for cooling the low-pressure sub-turbine of a steam turbine connected to a water-steam circuit, in which a coolant flows through the low-pressure sub-turbine, in particular in idle mode. It is also directed to a device for performing the method.
- a turboset with a heating steam turbine is often designed in such a way that when heat is extracted from a medium-pressure sub-turbine, the or each low-pressure sub-turbine does not receive any significant steam supply and thus operates in idle mode.
- this leads to a high level of heating of the blading in the low-pressure sub-turbine of the steam turbine, in particular with full heat extraction and shut-off of the low-pressure sub-turbine.
- the stated object is achieved according to the invention in that condensate is used as the coolant, which is taken from a condenser connected downstream of the steam turbine, the coolant being fed back into the water-steam circuit after flowing through the low-pressure part-tube is after at least a partial flow of the coolant has given up the heat absorbed during cooling to the water-steam cycle and has itself been cooled.
- the invention is based on the consideration that a suitable coolant for cooling the low-pressure turbine part in idle or low-load operation in addition to its property of effective cooling as a further property, the ability to recover as much of the heat loss as possible by ventilation of the turbine output stages.
- the coolant should have a correspondingly low temperature. Since the condenser for maintaining a necessary vacuum is also in operation when the low-pressure partial turbine is idling, the use of condensate as a coolant is particularly suitable, especially since it also has a suitable temperature.
- the coolant is expediently carried out in a closed cooling loop.
- the coolant is expediently guided through channels present in the or each guide vane of the low-pressure sub-turbine.
- the coolant can also flow through the inside of the housing
- the partial stream of the warmed or heated coolant is expediently fed to the condenser on its outflow side after cooling, while the other partial stream is fed directly to the condenser on its inflow side.
- the warmed-up coolant is fed into the water-steam cycle, this is done with regard to its pressure and temperature at a suitable point and by regulating the end temperature of the warmed-up coolant. With a particularly suitable regulation of the final temperature of the coolant, the coolant flow supplied to the low-pressure sub-turbine is set.
- the stated object is achieved according to the invention that in the coolant line in the flow direction behind the low-pressure turbine part, a heat exchanger is connected on the primary side, the secondary side of which is connected to the water-steam circuit.
- the heat contained in the warmed-up coolant can be decoupled in a particularly suitable manner for recovery and can be dissipated to the water-steam cycle at a suitable point where there is a low condensate pressure, e.g. after a first low pressure preheater.
- the coolant line is expediently connected to the condensate collecting container or Hotwell provided directly below the condenser.
- the coolant line is expedient connected to the pressure side of a condensate pump switched into the water-steam circuit.
- a circulation pump can be connected into the coolant line. Switching on a circulation pump is particularly expedient if the coolant is routed directly to the hotwell of the condenser in a separate cooling loop with connection of the coolant line.
- FIG. 1 shows a functional diagram for cooling the guide vanes of a low-pressure sub-turbine by means of condensate removed behind a condensate pump
- FIG. 2 shows an alternative functional diagram with a cooling loop guided over a condenser hotwell.
- FIG. 1 shows schematically only the final stage of a steam turbine 1 with a double-flow low-pressure turbine section 2 and a condenser 4 arranged underneath it and its collecting tank or hotwell 6 for condensate K.
- This is connected via a condensate line 8 to a condensate pump 10 only in a Water-steam circuit 12 of the steam turbine 1 shown in a cutout.
- the condensate line 8 opens via a first preheater 14 and a second preheater 16 into a feed water tank 18 which is also connected to the water-steam circuit 12.
- condensate K flows out of the hotwell 6 of the condenser 4 via the condensate line 8 and the condensate pump 10 and via the preheaters 14 and 16 into the feed water tank 18, where it is collected and usually degassed. From there it is called feed water S in In a manner not shown, evaporator and superheater heating surfaces connected to the water-steam circuit 12 are supplied to produce steam for the steam turbine 1. The steam is expanded in the steam turbine 1 while performing work and then fed into the condenser 4, where it condenses. The condensate 4 is collected in the Hotwell 6.
- a partial flow t-j_ of the condensate K from the hotwell 6 of the condenser 4 is fed to the low-pressure sub-turbine 2 via a coolant line 22 connected to the condensate line 8 on the pressure side of the condensate pump 10.
- the coolant K ′ flows through guide vanes 24 of the low-pressure turbine section 2, only two of which are shown.
- 24 channels are provided within the guide vanes in a manner not shown, which are networked together in a cooling loop.
- the coolant K 'can also be located within the inner housing 26
- Low-pressure turbine section 2 flow through channels that may be outer or inner contours of the inner housing 26. This is indicated by the arrows 28.
- the coolant line 22 there is a valve 30 on the inflow side for setting the amount of coolant K 'supplied to the low-pressure sub-turbine 2 per unit of time, i.e. switched to adjust the partial condensate flow t] _.
- the coolant line 22 is downstream, i.e. in the direction of flow of the coolant K 'behind the low-pressure turbine section 2, through the second preheater 16 and opens into the feed water tank 18. Between the low-pressure turbine section 2 and the second preheater 16, a non-return valve 32 is connected in the coolant line 22.
- the partial flow t- j _ of the coolant K ′ led via the coolant line 22 takes place when it flows through the guide vanes 24 and / or the inner housing 26, the heat generated by ventilation in idle or low-load operation from the low-pressure sub-turbine 2 and releases it in the second preheater 16 to the condensate K flowing to the feed water tank 18.
- the coolant K 'cooled in the process is mixed in the feed water tank 18 with the condensate K fed directly to it.
- a temperature sensor 34 measures the current final temperature T ⁇ . of the warmed-up coolant K 'on the outflow side of the low-pressure sub-turbine 2 connected inside the cooling loop into the coolant line 22
- Controller module 36 outputs a signal line 38 based on the measured end temperature T ⁇ . and a predeterminable target temperature determined control variable to the controllable valve 30 for setting the coolant flow t].
- the low-pressure turbine part 2 is cooled in a particularly simple manner by condensate K as coolant K 'from the hotwell 6 of the condenser 4 via a circulating pump 40 connected to a coolant line 22' to the guide vanes 24 Nie ⁇ derdruck partial turbine 2 is promoted.
- a partial flow t2 of the coolant K ', which is itself heated during cooling, is conducted via the partial flow line 42, into which a valve 44 is connected, via the partial flow line 42 connected to the coolant line 22' on the outflow side.
- the amount of the coolant K 'taken from the hotwell 6 per unit of time is in turn set by means of the valve 30' connected into the coolant line 22 '.
- the valve 30 ' is in turn actuated by the controller module 36 as a function of the temperature measuring sensor 34 measured final temperature T- ⁇ . of the heated cooling means K 'controlled.
- the remaining partial flow t3 of the heated coolant K ' which can be adjusted by means of valves 48 and 50, is in turn passed through a heat exchanger or preheater 16', again giving off its heat at a suitable point to the water-steam circuit 12 of the steam turbine 1 .
- the coolant K ' is therefore conducted in a separate cooling circuit 52 which is closed directly via the condenser 4.
- the guide vanes 24 can also be heated with steam via their cooling channels, which should be removed from a turbine tap in a manner known per se and not shown here.
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)
- Control Of Turbines (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96934354A EP0847482B1 (de) | 1995-08-31 | 1996-08-12 | Verfahren und vorrichtung zur kühlung einer niederdruck-teilturbine |
DE59608085T DE59608085D1 (de) | 1995-08-31 | 1996-08-12 | Verfahren und vorrichtung zur kühlung einer niederdruck-teilturbine |
JP50968597A JP3866288B2 (ja) | 1995-08-31 | 1996-08-12 | 蒸気タービンの低圧タービン部の冷却方法および装置 |
UA98021042A UA44799C2 (uk) | 1995-08-31 | 1996-08-12 | Спосіб та пристрій для охолодження cтупеня турбіни низького тиску |
US09/033,142 US6094914A (en) | 1995-08-31 | 1998-03-02 | Method and device for cooling a low-pressure turbine section |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19532199.5 | 1995-08-31 | ||
DE19532199 | 1995-08-31 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/033,142 Continuation US6094914A (en) | 1995-08-31 | 1998-03-02 | Method and device for cooling a low-pressure turbine section |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997008431A1 true WO1997008431A1 (de) | 1997-03-06 |
Family
ID=7770948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1996/001506 WO1997008431A1 (de) | 1995-08-31 | 1996-08-12 | Verfahren und vorrichtung zur kühlung einer niederdruck-teilturbine |
Country Status (12)
Country | Link |
---|---|
US (1) | US6094914A (de) |
EP (1) | EP0847482B1 (de) |
JP (1) | JP3866288B2 (de) |
KR (1) | KR100437922B1 (de) |
CN (1) | CN1076075C (de) |
DE (1) | DE59608085D1 (de) |
ES (1) | ES2166909T3 (de) |
IN (1) | IN187336B (de) |
RU (1) | RU2160368C2 (de) |
TW (1) | TW312727B (de) |
UA (1) | UA44799C2 (de) |
WO (1) | WO1997008431A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19926949A1 (de) * | 1999-06-14 | 2000-12-21 | Abb Alstom Power Ch Ag | Kühlungsanordnung für Schaufeln einer Gasturbine |
EP1152125A1 (de) * | 2000-05-05 | 2001-11-07 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Kühlung eines Einström-Wellenbereichs einer Dampfturbine |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20050281A1 (it) * | 2005-04-27 | 2006-10-28 | Ansaldo Energia Spa | Impianto a turbina provvisto di un prelievo di vapore e di un sistema per raffreddare una sezione di turbina disposta a valle di tale prelievo |
US8739541B2 (en) * | 2010-09-29 | 2014-06-03 | General Electric Company | System and method for cooling an expander |
EP2620604A1 (de) * | 2012-01-25 | 2013-07-31 | Siemens Aktiengesellschaft | Verfahren zur Steuerung eines Abkühlungsprozesses von Turbinenkomponenten |
JP5916431B2 (ja) * | 2012-02-22 | 2016-05-11 | 三菱重工業株式会社 | 発電プラントおよびその運転方法 |
RU2540213C1 (ru) * | 2013-07-18 | 2015-02-10 | Открытое акционерное общество "Научно-производственное объединение по исследованию и проектированию энергетического оборудования им. И.И. Ползунова" (ОАО "НПО ЦКТИ") | Часть низкого давления паровой турбины |
KR102117826B1 (ko) | 2016-03-30 | 2020-06-02 | 미츠비시 쥬고교 가부시키가이샤 | 플랜트, 및 그 운전 방법 |
CN107035439B (zh) * | 2017-06-27 | 2023-09-12 | 中国船舶重工集团公司第七�三研究所 | 一种凝汽式汽轮机后汽缸冷却系统 |
US10626843B2 (en) * | 2018-03-05 | 2020-04-21 | Job Freedman | Hybrid heat engine |
US11542838B2 (en) | 2020-09-03 | 2023-01-03 | Job E. Freedman | Hybrid heat engine system |
CN113153456B (zh) * | 2021-04-16 | 2023-05-12 | 西安交通大学 | 一种汽轮机静叶加热除湿试验系统 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CH202313A (de) * | 1937-05-08 | 1939-01-15 | Oerlikon Maschf | Verfahren zur Kühlung leerlaufender Dampfturbinen. |
DE905137C (de) * | 1951-03-14 | 1954-02-25 | Huettenwerk Watenstedt Salzgit | Verfahren zur Bereitschaftshaltung von Dampfturbinen |
GB1250097A (de) * | 1968-04-10 | 1971-10-20 | ||
SU1084472A1 (ru) * | 1982-05-12 | 1984-04-07 | Белорусский Ордена Трудового Красного Знамени Политехнический Институт | Способ разгрузки теплофикационной паротурбинной установки со ступенчатым подогревом сетевой воды |
SU1092288A1 (ru) * | 1983-02-07 | 1984-05-15 | Предприятие П/Я А-3513 | Цилиндр низкого давлени теплофикационной паровой турбины |
US4891937A (en) * | 1982-10-13 | 1990-01-09 | Hitachi, Ltd. | Heat recovery system |
EP0508387A1 (de) * | 1991-04-09 | 1992-10-14 | Mitsubishi Jukogyo Kabushiki Kaisha | Verfahren zur Verhinderung des Anhaftens von Kesselstein und Düse einer geothermischen Dampfturbine |
DE4129518A1 (de) * | 1991-09-06 | 1993-03-11 | Siemens Ag | Kuehlung einer niederbruck-dampfturbine im ventilationsbetrieb |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58140408A (ja) * | 1982-02-17 | 1983-08-20 | Hitachi Ltd | 蒸気タ−ビンの冷却装置 |
JPH05106406A (ja) * | 1991-10-21 | 1993-04-27 | Toshiba Corp | 蒸気タービンの冷却方法 |
JP2954797B2 (ja) * | 1992-10-05 | 1999-09-27 | 株式会社東芝 | 蒸気タ−ビンの強制冷却装置 |
DE4336143C2 (de) * | 1993-10-22 | 1995-11-16 | Erich Wuerzinger | Kühlverfahren für Turbomaschinen |
-
1996
- 1996-08-12 JP JP50968597A patent/JP3866288B2/ja not_active Expired - Lifetime
- 1996-08-12 RU RU98105693/06A patent/RU2160368C2/ru active
- 1996-08-12 CN CN96196428A patent/CN1076075C/zh not_active Expired - Lifetime
- 1996-08-12 KR KR10-1998-0701420A patent/KR100437922B1/ko not_active IP Right Cessation
- 1996-08-12 ES ES96934354T patent/ES2166909T3/es not_active Expired - Lifetime
- 1996-08-12 UA UA98021042A patent/UA44799C2/uk unknown
- 1996-08-12 EP EP96934354A patent/EP0847482B1/de not_active Expired - Lifetime
- 1996-08-12 DE DE59608085T patent/DE59608085D1/de not_active Expired - Lifetime
- 1996-08-12 WO PCT/DE1996/001506 patent/WO1997008431A1/de active IP Right Grant
- 1996-08-15 TW TW085109948A patent/TW312727B/zh active
- 1996-08-19 IN IN1472CA1996 patent/IN187336B/en unknown
-
1998
- 1998-03-02 US US09/033,142 patent/US6094914A/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH202313A (de) * | 1937-05-08 | 1939-01-15 | Oerlikon Maschf | Verfahren zur Kühlung leerlaufender Dampfturbinen. |
DE905137C (de) * | 1951-03-14 | 1954-02-25 | Huettenwerk Watenstedt Salzgit | Verfahren zur Bereitschaftshaltung von Dampfturbinen |
GB1250097A (de) * | 1968-04-10 | 1971-10-20 | ||
SU1084472A1 (ru) * | 1982-05-12 | 1984-04-07 | Белорусский Ордена Трудового Красного Знамени Политехнический Институт | Способ разгрузки теплофикационной паротурбинной установки со ступенчатым подогревом сетевой воды |
US4891937A (en) * | 1982-10-13 | 1990-01-09 | Hitachi, Ltd. | Heat recovery system |
SU1092288A1 (ru) * | 1983-02-07 | 1984-05-15 | Предприятие П/Я А-3513 | Цилиндр низкого давлени теплофикационной паровой турбины |
EP0508387A1 (de) * | 1991-04-09 | 1992-10-14 | Mitsubishi Jukogyo Kabushiki Kaisha | Verfahren zur Verhinderung des Anhaftens von Kesselstein und Düse einer geothermischen Dampfturbine |
DE4129518A1 (de) * | 1991-09-06 | 1993-03-11 | Siemens Ag | Kuehlung einer niederbruck-dampfturbine im ventilationsbetrieb |
Non-Patent Citations (2)
Title |
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DATABASE WPI Section PQ Week 0285, Derwent World Patents Index; Class Q51, Page 1, AN 85-010296, XP002024197 * |
DATABASE WPI Section PQ Week 2585, Derwent World Patents Index; Class Q51, Page 1, AN 85-151282, XP002024196 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19926949A1 (de) * | 1999-06-14 | 2000-12-21 | Abb Alstom Power Ch Ag | Kühlungsanordnung für Schaufeln einer Gasturbine |
US6422811B1 (en) | 1999-06-14 | 2002-07-23 | Alstom (Switzerland) Ltd | Cooling arrangement for blades of a gas turbine |
DE19926949B4 (de) * | 1999-06-14 | 2011-01-05 | Alstom | Kühlungsanordnung für Schaufeln einer Gasturbine |
EP1152125A1 (de) * | 2000-05-05 | 2001-11-07 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Kühlung eines Einström-Wellenbereichs einer Dampfturbine |
WO2001086122A1 (de) * | 2000-05-05 | 2001-11-15 | Siemens Aktiengesellschaft | Verfahren und vorrichtung zur kühlung eines einström-wellenbereichs einer dampfturbine |
US6824351B2 (en) | 2000-05-05 | 2004-11-30 | Siemens Aktienegesellschaft | Method and device for cooling the inflow area of the shaft of a steam turbine |
CN1309938C (zh) * | 2000-05-05 | 2007-04-11 | 西门子公司 | 用于冷却汽轮机轴入流区的方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1194025A (zh) | 1998-09-23 |
JPH11511222A (ja) | 1999-09-28 |
US6094914A (en) | 2000-08-01 |
EP0847482A1 (de) | 1998-06-17 |
UA44799C2 (uk) | 2002-03-15 |
KR100437922B1 (ko) | 2004-08-16 |
RU2160368C2 (ru) | 2000-12-10 |
JP3866288B2 (ja) | 2007-01-10 |
TW312727B (de) | 1997-08-11 |
ES2166909T3 (es) | 2002-05-01 |
EP0847482B1 (de) | 2001-10-31 |
DE59608085D1 (de) | 2001-12-06 |
CN1076075C (zh) | 2001-12-12 |
KR19990044185A (ko) | 1999-06-25 |
IN187336B (de) | 2002-03-30 |
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