EP2396514A1 - Method for heating a turbine shaft - Google Patents
Method for heating a turbine shaftInfo
- Publication number
- EP2396514A1 EP2396514A1 EP10702463A EP10702463A EP2396514A1 EP 2396514 A1 EP2396514 A1 EP 2396514A1 EP 10702463 A EP10702463 A EP 10702463A EP 10702463 A EP10702463 A EP 10702463A EP 2396514 A1 EP2396514 A1 EP 2396514A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine shaft
- water
- turbine
- steam
- injection
- 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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
-
- 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
- F01D25/10—Heating, e.g. warming-up before 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/08—Heating, heat-insulating or cooling means
-
- 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
-
- 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
- F05D2260/85—Starting
Definitions
- the invention relates to a method for heating a turbine shaft and a steam turbine comprising a turbine shaft and a device for heating the turbine shaft.
- a starting method for starting the steam turbine is started.
- live steam valves are more or less opened.
- the values for the starting temperature, the starting pressure and the starting quality of the steam are selected such that after startup of the steam turbine an idling operation or a load operation with a low load for the steam turbine can be realized.
- Machine condition are reached by the application of hot steam regularly high material loads by the thermal expansion stresses occurring. Due to the liberalization of the energy market, it is currently common practice to decommission steam turbine plants over a longer period of time. These include short-term shutdowns or daily start / stop modes and weekend shutdowns.
- the invention begins, whose task is to provide a method and a steam turbine, which can be heated quickly.
- This object is achieved by a method for heating a turbine shaft, wherein the turbine shaft is heated by water injection.
- the task directed towards the steam turbine is achieved by a steam turbine comprising a turbine shaft and a device for injecting water onto the turbine shaft.
- the turbine shaft is a large component with a high mass and thus a comparatively high heat capacity. This leads to the fact that the turbine shaft is heated comparatively slowly with an energy supply.
- An essential idea of the invention is to heat the turbine shaft faster by spraying warm water onto the turbine shaft. By this water injection takes place a rapid heat transfer of the warm water to the turbine shaft.
- the term water is here understood to mean liquid in its state of aggregation.
- the turbine shaft is sprayed with water until a maximum Anürmformatiere is reached.
- the maximum heating speed hereby reaches values between 8 Hz and 25 Hz. Since there is a permanent transfer of heat to the turbine shaft via the injection of water, it is advantageous that the water is continuously injected onto the turbine shaft until the turbine shaft reaches the maximum heating speed during the warm-up process has reached. The start-up time is thereby further shortened.
- the warm water is taken from a preheating or from a feed pump to ensure the required steam purity, z. B. from a parallel vapor source.
- a steam circuit is generally present in such a way that water is available from the preheating section or from the feed pump.
- the water from the preheat section is opposite the water from the pump so that it has a higher temperature, the pressure in the turbine is of crucial importance.
- injection nozzles are arranged within the steam turbine, via which the warm water is sprayed onto the turbine shaft.
- Figure 1 is a schematic representation of a water injection on a turbine shaft.
- the turbine shaft 1 shows a schematic representation of a turbine shaft 1, which is designed to be double-flow.
- the turbine shaft 1 comprises a left-hand flood 2 and a right-hand flood 3.
- the turbine shaft 1 rotates about the rotation axis 4.
- live steam flows into the steam turbine via an inflow region (not shown) and relaxes along the left-hand flood 2 and the right-hand side Flood 3.
- the turbine shaft 1 includes blades not shown in detail.
- the turbine shaft 1 can heat to above 300 0 C. The temperatures can even reach values up to 630 0 C. After a standstill, the temperature of the turbine shaft 1 may be less than 100 0 C.
- the warm water 5 may have temperatures between 100 0 C and 350 0 C.
- the water is passed through a valve 7 to the injection nozzle 6. With the valve 7, the amount of water that leads through a line 8 to the injection nozzle 6, are regulated.
- the turbine shaft 1 is hereby heated by the water injection before the abutment. This means that the turbine shaft 1 is already sprayed with water during the turn operation, ie an externally supplied rotational movement via a motor. Care must be taken here, however, that the amount of water 5 injected from the injection nozzle 6 is constant over the surface of the turbine nozzle. wave 1, otherwise local tensions may arise. Furthermore, the turbine shaft 1 is sprayed so long by means of the injection nozzles 6 with warm water 5 until a maximum Anürmformatiere is reached. The heating speed assumes values between 8 Hz and 25 Hz.
- the valve 7 is fluidically coupled to a line 9, wherein the line 9 is fluidly coupled in a manner not shown on a preheating or at a feed pump.
- the turbine shaft 1 is part of a steam turbine, not shown.
- This steam turbine comprises a housing, wherein the injection nozzles 6 are arranged for injecting the water 5 within the housing.
- the position of the injectors 6 and the flow rate of hot water 5 should be selected appropriately so that the heat transfer coefficient is optimal.
- the steam turbine housing drainages which are designed such that in the housing located water can flow. These drain casings are opened during the heating process so that the water can drain off.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10702463.0A EP2396514B1 (en) | 2009-02-10 | 2010-01-25 | Method for heating a turbine shaft |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09001828A EP2216506A1 (en) | 2009-02-10 | 2009-02-10 | Method for heating a turbine shaft |
PCT/EP2010/050800 WO2010091942A1 (en) | 2009-02-10 | 2010-01-25 | Method for heating a turbine shaft |
EP10702463.0A EP2396514B1 (en) | 2009-02-10 | 2010-01-25 | Method for heating a turbine shaft |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2396514A1 true EP2396514A1 (en) | 2011-12-21 |
EP2396514B1 EP2396514B1 (en) | 2014-03-05 |
Family
ID=41053762
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09001828A Withdrawn EP2216506A1 (en) | 2009-02-10 | 2009-02-10 | Method for heating a turbine shaft |
EP10702463.0A Not-in-force EP2396514B1 (en) | 2009-02-10 | 2010-01-25 | Method for heating a turbine shaft |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09001828A Withdrawn EP2216506A1 (en) | 2009-02-10 | 2009-02-10 | Method for heating a turbine shaft |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110308251A1 (en) |
EP (2) | EP2216506A1 (en) |
JP (1) | JP2012517550A (en) |
CN (1) | CN102317576A (en) |
WO (1) | WO2010091942A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9359898B2 (en) * | 2012-04-19 | 2016-06-07 | General Electric Company | Systems for heating rotor disks in a turbomachine |
FR3007459B1 (en) * | 2013-06-19 | 2016-10-14 | Airbus Operations Sas | SYSTEM AND METHOD FOR ROTATING A ROTARY MEMBER OF A MECHANICAL DEVICE, IN PARTICULAR A TURBOMACHINE. |
JP6479386B2 (en) | 2014-09-26 | 2019-03-06 | 株式会社東芝 | Steam turbine |
EP3029280B1 (en) | 2014-12-04 | 2023-02-08 | General Electric Technology GmbH | A method for starting a steam turbine |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1230325A (en) * | 1969-03-05 | 1971-04-28 | ||
US4055048A (en) * | 1976-08-20 | 1977-10-25 | Reed Charles W | Apparatus and method for side stream demineralization of condensate in a steam cycle |
JPS5912105A (en) * | 1982-07-12 | 1984-01-21 | Fuji Electric Co Ltd | Starting system of reheat condensing steam turbine |
JPS61237802A (en) * | 1985-04-12 | 1986-10-23 | Hitachi Ltd | Warming-up method for steam turbine |
JPS6267206A (en) * | 1985-09-20 | 1987-03-26 | Hitachi Ltd | Warming up device for intermediate pressure turbine |
JPS62159704A (en) * | 1986-01-09 | 1987-07-15 | Mitsubishi Heavy Ind Ltd | Warming up method of steam turbine |
JPS63270410A (en) * | 1987-04-28 | 1988-11-08 | Nkk Corp | Heating method for low temperature substance |
US5172553A (en) * | 1992-01-21 | 1992-12-22 | Westinghouse Electric Corp. | Convective, temperature-equalizing system for minimizing cover-to-base turbine casing temperature differentials |
US5433079A (en) * | 1994-03-08 | 1995-07-18 | General Electric Company | Automated steam turbine startup method and apparatus therefor |
US5498131A (en) * | 1995-03-02 | 1996-03-12 | General Electric Company | Steam turbine with thermal stress reduction system |
JPH09177755A (en) * | 1995-12-28 | 1997-07-11 | Toshiba Corp | Rotor heating device of steam turbine |
JPH11190205A (en) * | 1997-12-25 | 1999-07-13 | Mitsubishi Heavy Ind Ltd | Thermal stability testing method for rotor |
US6311704B1 (en) * | 2000-03-03 | 2001-11-06 | Hydrochem Industrial Services | Methods and apparatus for chemically cleaning turbines |
JP2003035108A (en) * | 2001-07-24 | 2003-02-07 | Fuji Electric Co Ltd | Axial exhaust steam turbine |
JP4723884B2 (en) * | 2005-03-16 | 2011-07-13 | 株式会社東芝 | Turbine start control device and start control method thereof |
EP1707739A1 (en) * | 2005-03-24 | 2006-10-04 | Siemens Aktiengesellschaft | Steam turbine with cooled hollow shaft and corresponding cooling method |
-
2009
- 2009-02-10 EP EP09001828A patent/EP2216506A1/en not_active Withdrawn
-
2010
- 2010-01-25 WO PCT/EP2010/050800 patent/WO2010091942A1/en active Application Filing
- 2010-01-25 CN CN2010800073765A patent/CN102317576A/en active Pending
- 2010-01-25 EP EP10702463.0A patent/EP2396514B1/en not_active Not-in-force
- 2010-01-25 US US13/148,489 patent/US20110308251A1/en not_active Abandoned
- 2010-01-25 JP JP2011548639A patent/JP2012517550A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2010091942A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2012517550A (en) | 2012-08-02 |
WO2010091942A1 (en) | 2010-08-19 |
EP2216506A1 (en) | 2010-08-11 |
US20110308251A1 (en) | 2011-12-22 |
CN102317576A (en) | 2012-01-11 |
EP2396514B1 (en) | 2014-03-05 |
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