SE518992C2 - Emergency system for a gas turbine - Google Patents
Emergency system for a gas turbineInfo
- Publication number
- SE518992C2 SE518992C2 SE0003523A SE0003523A SE518992C2 SE 518992 C2 SE518992 C2 SE 518992C2 SE 0003523 A SE0003523 A SE 0003523A SE 0003523 A SE0003523 A SE 0003523A SE 518992 C2 SE518992 C2 SE 518992C2
- Authority
- SE
- Sweden
- Prior art keywords
- air
- generator
- emergency system
- solenoid valve
- gas turbine
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- 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
- F01D21/14—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to other specific conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
Abstract
Description
30 35 518 992 under den tidsperioden måste generatorn kylas och labyrint- tätningarna mäste förses med spärrluft. During that time, the generator must be cooled and the labyrinth seals must be supplied with barrier air.
Ett ändamål med föreliggande uppfinning är att till- handahålla kylluft till generatorn och spärrluft till laby- rinttätningarna under gasturbinens utrullning vid ett strömavbrott.An object of the present invention is to provide cooling air to the generator and barrier air to the labyrinth seals during the roll-out of the gas turbine in the event of a power failure.
Detta sker genom att en del av luften från kompres- sorn leds genom en separat ledning. Kompressorn kommer att I händel- se av ett strömavbrott kommer en magnetventil att öppna och verka och ta in luft så länge som rotorn roterar. en strypning kommer att minska trycket samtidigt som luft- temperaturen kommer att sjunka.This is done by passing some of the air from the compressor through a separate line. The compressor will In the event of a power failure, a solenoid valve will open and operate and take in air as long as the rotor rotates. a throttle will reduce the pressure while the air temperature will drop.
Andra ändamål och fördelar med föreliggande uppfin- ning kommer att vara självklara för en fackman vid genom- läsning av den detaljerade beskrivningen nedan över före- dragna utföringsformer.Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the detailed description below of preferred embodiments.
Kortfattad beskrivning av ritningen I bifogad figur visas nödsystemet enligt uppfinningen schematiskt.Brief description of the drawing In the attached figure, the emergency system according to the invention is shown schematically.
Detaljerad beskrivning av föredragna utförinqsformer I figuren visas en del av en gasturbin schematiskt.Detailed Description of Preferred Embodiments The figure schematically shows a part of a gas turbine.
Gasturbinen är en del av ett värmekraftsaggregat. De visade delarna är en generator 1 förbunden med en kompressor 2.The gas turbine is part of a thermal power unit. The parts shown are a generator 1 connected to a compressor 2.
Kompressorn 2 tar in luft från omgivningen så länge som gasturbinen och således kompressorn 2 roterar. Generatorn 1 är försedd med labyrinttätningar 3 såsom antytt i figuren.The compressor 2 takes in air from the surroundings as long as the gas turbine and thus the compressor 2 rotates. The generator 1 is provided with labyrinth seals 3 as indicated in the figure.
För att hindra oljeläckage anordnas spärrluft pä labyrint- tätningarnas 3 yttre sida. Dessutom förses själva genera- torn 1 med kylluft. I praktiken är spärrluften och kylluf- ten samma luft som har de två angivna funktionerna.To prevent oil leakage, barrier air is arranged on the outer side of the labyrinth seals 3. In addition, generator 1 itself is supplied with cooling air. In practice, the barrier air and the cooling air are the same air that has the two specified functions.
Vid normal drift tillhandahålls spärr- och kylluften av en fläkt 8. Luften från fläkten 8 leds via en ledning 12 till en kylare 7. Kylarens 7 funktion är att kyla luften till den önskade kyltemperaturen. Från kylaren 7 går luften Luften i två separata ledningar 13, 14 till generatorn 1. 10 15 20 25 30 518 992 3 lämnar generatorn via två ytterligare ledningar 15 och 16.During normal operation, the blocking and cooling air is provided by a fan 8. The air from the fan 8 is led via a line 12 to a cooler 7. The function of the cooler 7 is to cool the air to the desired cooling temperature. From the cooler 7 the air The air goes in two separate lines 13, 14 to the generator 1. 10 15 20 25 30 518 992 3 leaves the generator via two further lines 15 and 16.
I ledningen 12 som går från fläkten 8 till kylaren 7 är en backventil 9 placerad. Backventilen 9 hindrar luft från att gå bakåt genom fläkten 8. Luften till kompressorn 1 tas på normalt sätt från kompressorns 1 omgivning.In the line 12 which runs from the fan 8 to the radiator 7, a non-return valve 9 is placed. The non-return valve 9 prevents air from going backwards through the fan 8. The air to the compressor 1 is normally taken from the surroundings of the compressor 1.
I en nödsituation leds en del av luften från kompres- sorn 1 med hjälp av ledningen 10 till en magnetventil 5.In an emergency, some of the air is led from the compressor 1 by means of the line 10 to a solenoid valve 5.
Magnetventilen 5 är normalt stängd men kommer att öppnas automatiskt vid ett strömavbrott, genom att solenoiden kom- mer att bli strömlös. Vid normal drift finns således inget flöde i ledningen 10 som leder till magnetventilen 5.The solenoid valve 5 is normally closed but will open automatically in the event of a power failure, as the solenoid will be without power. Thus, during normal operation, there is no flow in the line 10 leading to the solenoid valve 5.
En tryckvakt 4 är placerad på generatorn 1. Från tryckvakten 4 leder en styrledning 11 till magnetventilen 5 och magnetventilen 5 kan öppnas av tryckvakten 4. Tryckvak- ten 4 kommer att öppna magnetventilen 5 om trycket i gene- ratorn understiger ett inställt värde. Magnetventilen 5 öppnas således antingen av ett strömavbrott eller av tryck- vakten 4.A pressure switch 4 is located on the generator 1. From the pressure switch 4 a control line 11 leads to the solenoid valve 5 and the solenoid valve 5 can be opened by the pressure switch 4. The pressure switch 4 will open the solenoid valve 5 if the pressure in the generator falls below a set value. The solenoid valve 5 is thus opened either by a power failure or by the pressure switch 4.
En strypning 6 är placerad efter magnetventilen 5. I den visade utföringsformen är strypningen 6 en tryckregula- tor inställd på ett önskat värde, exempelvis 0,3 bar. En fackman inser att strypningen kan ha vilken lämplig form som helst, såsom en fast strypning.A throttle 6 is located after the solenoid valve 5. In the embodiment shown, the throttle 6 is a pressure regulator set to a desired value, for example 0.3 bar. One skilled in the art will appreciate that the choke may be of any suitable shape, such as a fixed choke.
Om exempelvis fläkten 8 slutar att fungera kommer trycket i generatorn 1 att sjunka eftersom ingen kylluft matas till generatorn 1. På grund av det lägre trycket kom- mer tryckvakten 4 att öppna magnetventilen 5 och luft kom- mer att tas in med hjälp av ledningen 10 och matas till ge- neratorn 2. Således kommer kyl- och spärrluften att matas till generatorn 1 även om fläkten 8 stannar. Strypningen 6 kommer att minska trycket och luften kommer att kylas adia- batiskt, tack vare tryckfallet. Det finns således inget be- hov av kylaren i nödtillståndet. Dessutom kommer kylaren 7 inte att fungera vid ett strömavbrott. 518 992 När trycket inställt av tryckvakten 4 underskrids kommer gasturbinen att stängas av och rulla ut. Utrull- ningstiden är normalt ca 3-5 min.For example, if the fan 8 stops working, the pressure in the generator 1 will drop because no cooling air is supplied to the generator 1. Due to the lower pressure, the pressure monitor 4 will open the solenoid valve 5 and air will be taken in by means of the line 10. and is supplied to the generator 2. Thus, the cooling and shut-off air will be supplied to the generator 1 even if the fan 8 stops. The throttle 6 will reduce the pressure and the air will be cooled adiabatically, thanks to the pressure drop. There is thus no need for the radiator in the emergency. In addition, the radiator 7 will not operate in the event of a power failure. 518 992 When the pressure set by the pressure switch 4 is below, the gas turbine will be switched off and roll out. The roll-out time is normally about 3-5 minutes.
När magnetventilen 5 har öppnats vid ett nödtillstánd kommer luft att ledas via kylaren 7, som in denna situation inte verkar som en kylare. Från kylaren 7 kommer luften att gå in i generatorn via den normala ledningen 13. En del av luften kommer att gå direkt till den andra inloppsledningen 14 hos generatorn 1.When the solenoid valve 5 has been opened in an emergency, air will be led through the radiator 7, which in this situation does not act as a radiator. From the cooler 7, the air will enter the generator via the normal line 13. Some of the air will go directly to the other inlet line 14 of the generator 1.
Claims (10)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0003523A SE518992C2 (en) | 2000-09-29 | 2000-09-29 | Emergency system for a gas turbine |
AU2001288201A AU2001288201A1 (en) | 2000-09-29 | 2001-09-21 | Emergency system |
PCT/SE2001/002029 WO2002027150A1 (en) | 2000-09-29 | 2001-09-21 | Emergency system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0003523A SE518992C2 (en) | 2000-09-29 | 2000-09-29 | Emergency system for a gas turbine |
Publications (3)
Publication Number | Publication Date |
---|---|
SE0003523D0 SE0003523D0 (en) | 2000-09-29 |
SE0003523L SE0003523L (en) | 2002-03-30 |
SE518992C2 true SE518992C2 (en) | 2002-12-17 |
Family
ID=20281245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0003523A SE518992C2 (en) | 2000-09-29 | 2000-09-29 | Emergency system for a gas turbine |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2001288201A1 (en) |
SE (1) | SE518992C2 (en) |
WO (1) | WO2002027150A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2930314B1 (en) * | 2014-04-08 | 2022-06-08 | Rolls-Royce Corporation | Generator with controlled air cooling amplifier |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3641766A (en) * | 1969-11-26 | 1972-02-15 | Gen Electric | Gas turbine engine constant speed thrust modulation |
CH517990A (en) * | 1971-01-25 | 1972-01-15 | Foerderung Forschung Gmbh | Method for improving the removal of residual heat in the event of an emergency shutdown of a gas-cooled nuclear reactor and device for carrying out the method in a power generation plant |
US4791784A (en) * | 1985-06-17 | 1988-12-20 | University Of Dayton | Internal bypass gas turbine engines with blade cooling |
DE59709711D1 (en) * | 1997-12-01 | 2003-05-08 | Alstom Switzerland Ltd | Gas turbine cooling air cooler |
US6101806A (en) * | 1998-08-31 | 2000-08-15 | Alliedsignal, Inc. | Tri-mode combustion system |
-
2000
- 2000-09-29 SE SE0003523A patent/SE518992C2/en not_active IP Right Cessation
-
2001
- 2001-09-21 AU AU2001288201A patent/AU2001288201A1/en not_active Abandoned
- 2001-09-21 WO PCT/SE2001/002029 patent/WO2002027150A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
AU2001288201A1 (en) | 2002-04-08 |
WO2002027150A1 (en) | 2002-04-04 |
SE0003523L (en) | 2002-03-30 |
SE0003523D0 (en) | 2000-09-29 |
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Legal Events
Date | Code | Title | Description |
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NUG | Patent has lapsed |