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WO1994029643A1 - Gas-turbine installation with series-connected waste-heat steam generator - Google Patents

Gas-turbine installation with series-connected waste-heat steam generator Download PDF

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Publication number
WO1994029643A1
WO1994029643A1 PCT/DE1994/000616 DE9400616W WO9429643A1 WO 1994029643 A1 WO1994029643 A1 WO 1994029643A1 DE 9400616 W DE9400616 W DE 9400616W WO 9429643 A1 WO9429643 A1 WO 9429643A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
flue gas
turbine
gas turbine
steam generator
Prior art date
Application number
PCT/DE1994/000616
Other languages
German (de)
French (fr)
Inventor
Alfred Kessler
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO1994029643A1 publication Critical patent/WO1994029643A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
    • F16K11/0525—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves the closure members being pivoted around an essentially central axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1807—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines
    • F22B1/1815—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines using the exhaust gases of combustion engines using the exhaust gases of gas-turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

Definitions

  • the invention relates to a gas turbine system with a waste heat steam generator connected downstream of the gas turbine via a flue gas duct for generating steam, in particular for a steam turbine.
  • the heat contained in the expanded flue gas from the gas turbine is used to generate steam, e.g. used for a steam turbine or another heat consumer (process steam, district heating).
  • the heat transfer takes place in the heat recovery steam generator downstream of the gas turbine via the flue gas duct.
  • heating surfaces in the form of tube bundles are arranged in the waste heat steam generator, which are connected in a water-steam cycle usually constructed from several pressure stages. In the water-steam cycle is the heat consumer, i.e. in a gas and steam turbine system, the steam turbine is switched.
  • the invention is therefore based on the object of further developing a gas turbine system of the type mentioned at the beginning with simple means such that an economical mode of operation is possible regardless of the operating state of the gas turbine.
  • This object is achieved according to the invention by a slide arrangement for closing the cross section of the flue gas duct while simultaneously opening a bypass cross section of the flue gas duct for discharging air conducted through the gas turbine.
  • a number of flue gas flaps arranged in the manner of a louver are expediently provided.
  • at least one bypass flap is expediently provided.
  • the flaps are actuated with a common drive to make it easy to open and close the two duct cross-sections at the same time. This ensures that either the cross section of the flue gas duct is open and the bypass cross section is closed, or that conversely the bypass cross section is open and the cross section of the flue gas duct is closed.
  • the flaps are expediently in a common flap arranged pen housing, the length of which is approximately 5 to 10% of the width and / or the height.
  • the waste heat duct cools down only slowly when the cross section of the flue gas duct is closed when the gas turbine is switched off, the air flowing through the gas turbine being able to flow out via the bypass cross section of the flue gas duct. Due to the slow cooling of the heat recovery steam generator in the standstill phase of the gas turbine, the heat losses in the heat recovery steam generator and the thermal shock loads on the components of the heat recovery steam generator are particularly low. The low heat loss enables short operating times for any auxiliary boiler that may be provided, so that low operating costs and a long service life of the system are achieved with a simultaneously low environmental impact.
  • the gas turbine system 1 comprises a gas turbine 2 and a waste heat generator 6 connected to it via a flue gas duct 4, to which a steam turbine 10 is connected via a steam line 8.
  • hot flue gas RG flows in the direction of arrow 12 over the flue gas duct 4 and through the heat recovery steam generator 6.
  • the heat contained in the hot flue gas RG is passed to one (not.) Via heating surfaces 14 arranged within the heat recovery steam generator 6 ) shown water-steam cycle of the steam turbine 10.
  • the cooled flue gas RG leaves the heat recovery steam generator 6 via its chimney 16.
  • Flaps 18, which are arranged in the manner of a louver and are part of a slide arrangement, are provided within the flue gas duct 4 to close the entire flue gas duct cross section. Another part of the slide arrangement is formed by a bypass flap 24, which serves to close the cross section of a bypass opening 26.
  • the slide arrangement with the flaps 18 and 24 is arranged in a common flap housing 28.
  • the length A of the flap housing 28 is approximately 0.25 to 0.8 m in the case of a flap housing 28, for example 5 to 8 m wide and 5 to 8 m high.
  • the flaps 18 are connected to an electrically, hydraulically or pneumatically operated drive 32 via a linkage 30 common to them.
  • the drive 32 is also connected to the bypass flap 24 via a further linkage 34, so that the flaps 18 and 24 are always actuated simultaneously.
  • a slide can also be used to close the flue gas duct cross section.
  • the gas turbine 2 switched off, i.e. When the latter is running in rotary mode, air L is passed through the gas turbine 2 for cooling it over a period of several hours when the intake duct is open (not shown).
  • the flaps 18 and the bypass flap 24 are actuated by means of the drive 32, so that the cross section of the flue gas duct 4 is closed and the cross section of the bypass opening 26 is open.
  • the heat recovery steam generator 6 is then closed on the inlet side, so that there is no forced cooling there.
  • the air L used for cooling the gas turbine 2 is discharged via the bypass opening 26 in the direction of the arrow 36.
  • the bypass opening 26 is provided with a cover or roof 27 and opens into the free atmosphere.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The gas-turbine installation (1) proposed includes a waste-heat steam generator (6) connected to the gas turbine (2) by the exhaust-gas duct (4) and intended for the generation of steam for, in particular, a steam turbine (10). The invention calls for the provision of a slide assembly (18, 24) which closes off the exhaust-gas duct (4), at the same time opening a bypass line (26) to allow air (L) which has passed through the gas turbine (2) to be drawn off. This enables the installation (1) to be operated economically even when the gas turbine (2) is switched off but turning.

Description

Beschreibungdescription
Gasturbinenanlage mit nachgeschaltetem AbhitzedampferzeugerGas turbine system with downstream heat recovery steam generator
Die Erfindung bezieht sich auf eine Gasturbinenanlage mit ei¬ nem der Gasturbine über einen Rauchgaskanal nachgeschalteten Abhitzedampferzeuger zur Erzeugung von Dampf, insbesondere für eine Dampfturbine.The invention relates to a gas turbine system with a waste heat steam generator connected downstream of the gas turbine via a flue gas duct for generating steam, in particular for a steam turbine.
Bei einer derartigen Gasturbinenanlage wird die im entspann¬ ten Rauchgas aus der Gasturbine enthaltene Wärme zur Erzeu¬ gung von Dampf, z.B. für eine Dampfturbine oder einen anderen Wärmeverbraucher (Prozeßdampf, Fernwärme), genutzt. Die Wärmeübertragung erfolgt in dem der Gasturbine über den Rauchgaskanal nachgeschalteten Abhitzedampferzeuger. Dazu sind in dem Abhitzedampferzeuger Heizflächen in Form von Rohrbündeln angeordnet, die in einen üblicherweise aus mehre¬ ren Druckstufen aufgebauten Wasser-Dampf-Kreislauf geschaltet sind. In den Wasser-Dampf-Kreislauf ist der Wärmeverbraucher, d.h. bei einer Gas- und Dampfturbinenanlage die Dampfturbine, geschaltet.In such a gas turbine plant, the heat contained in the expanded flue gas from the gas turbine is used to generate steam, e.g. used for a steam turbine or another heat consumer (process steam, district heating). The heat transfer takes place in the heat recovery steam generator downstream of the gas turbine via the flue gas duct. For this purpose, heating surfaces in the form of tube bundles are arranged in the waste heat steam generator, which are connected in a water-steam cycle usually constructed from several pressure stages. In the water-steam cycle is the heat consumer, i.e. in a gas and steam turbine system, the steam turbine is switched.
Bei einer Gasturbinenanlage, insbesondere bei einer kombi¬ nierten Gas- und Dampfturbinenanlage, bei der in Strömungs- richtung des Rauchgases hinter der Gasturbine kein Bypasska- in vorhanden ist, besteht keine Möglichkeit, die Gasturbine im sogenannten "Single cycle-Betrieb" allein zu betreiben, weil das Rauchgas aus der Gasturbine über den Abhitze¬ dampferzeuger abgeführt werden muß. Wird die Gasturbine abge- schaltet, z.B. betriebsbedingt oder zu Revisions- oder Repa¬ raturzwecken, kühlt der Abhitzedampferzeuger zwangsläufig ab. Die Abkühlung erfolgt dabei sehr schnell, da nach dem Ab¬ fahren der Gasturbine diese noch mehrere Stunden im Drehbe¬ trieb (turn-Betrieb) läuft und dabei über einen Ansaugkanal der Gasturbine strömende kühle Luft durch den Abhitzedampfer¬ zeuger geführt wird. Der mit dem Abkühlen des Abhitzedampfer¬ zeugers in der Stillstandsphase der Gasturbine verbundene große Temperaturwechsel führt zu einer erheblichen Belastung der Bauteile des Abhitzedampferzeugers. Außerdem ist aufgrund der starken Abkühlung des Abhitzedampferzeugers die Aufwärm¬ zeit beim erneuten Anfahren der Anlage besonders lang. Um dennoch den Abhitzedampferzeuger bei abgeschalteter Gastur¬ bine zumindest auf der in einer Niederdruckstufe der Dampf¬ turbine herrschenden Temperatur zu halten, wird häufig ein zusätzlicher Hilfskessel zur Erzeugung von Hilfsdampf be¬ reitgestellt. Eine derartige Betriebsweise ist allerdings be- sonders unwirtschaftlich.In the case of a gas turbine system, in particular in a combined gas and steam turbine system, in which there is no bypass valve in the direction of flow of the flue gas behind the gas turbine, there is no possibility of operating the gas turbine alone in the so-called "single cycle mode" , because the flue gas must be removed from the gas turbine via the Abhitze¬ steam generator. If the gas turbine is switched off, for example for operational reasons or for revision or repair purposes, the heat recovery steam generator inevitably cools down. The cooling takes place very quickly, since after the gas turbine has been shut down, it continues to run for several hours in the rotary mode (turn mode) and cool air flowing through an intake duct of the gas turbine is guided through the heat recovery steam generator. The one associated with the cooling of the heat recovery steam generator in the standstill phase of the gas turbine Large temperature changes lead to a considerable load on the components of the heat recovery steam generator. In addition, due to the strong cooling of the heat recovery steam generator, the warm-up time when starting up the system again is particularly long. In order nevertheless to keep the waste heat steam generator at least at the temperature prevailing in a low-pressure stage of the steam turbine when the gas turbine is switched off, an additional auxiliary boiler is often provided for generating auxiliary steam. Such an operation is particularly uneconomical.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Gastur¬ binenanlage der eingangs genannten Art mit einfachen Mitteln derart weiterzubilden, daß unabhängig vom Betriebszustand der Gasturbine eine wirtschaftliche Betriebsweise möglich ist.The invention is therefore based on the object of further developing a gas turbine system of the type mentioned at the beginning with simple means such that an economical mode of operation is possible regardless of the operating state of the gas turbine.
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Schie¬ beranordnung zum Verschließen des Querschnitts des Rauchgas¬ kanals bei gleichzeitigem Öffnen eines Bypassquerschnitts des Rauchgaskanals zum Abführen von durch die Gasturbine geführ¬ ter Luft.This object is achieved according to the invention by a slide arrangement for closing the cross section of the flue gas duct while simultaneously opening a bypass cross section of the flue gas duct for discharging air conducted through the gas turbine.
Zum Verschließen des Querschnitts des Rauchgaskanals ist zweckmäßigerweise eine Anzahl von jalousieartig angeordneten Rauchgasklappen vorgesehen. Zum Öffnen des Bypassquerschnitts des Rauchgaskanals ist zweckmäßigerweise mindestens eine Bypassklappe vorgesehen.To close the cross section of the flue gas duct, a number of flue gas flaps arranged in the manner of a louver are expediently provided. To open the bypass cross section of the flue gas duct, at least one bypass flap is expediently provided.
Um das gleichzeitige Öffnen und Schließen der beiden Kanal- querschnitte in einfacher Weise zu ermöglichen, werden die Klappen mit einem gemeinsamen Antrieb betätigt. Dadurch ist sichergestellt, daß entweder der Querschnitt des Rauchgaska¬ nals geöffnet und der Bypassquerschnitt geschlossen ist, oder daß umgekehrt der Bypassquerschnitt geöffnet und der Quer- schnitt des Rauchgaskanals geschlossen ist. Dazu sind die Klappen zweckmäßigerweise in einem ihnen gemeinsamen Klap- pengehäuse angeordnet, dessen Länge etwa 5 bis 10 % der Brei¬ te und/oder der Höhe beträgt.The flaps are actuated with a common drive to make it easy to open and close the two duct cross-sections at the same time. This ensures that either the cross section of the flue gas duct is open and the bypass cross section is closed, or that conversely the bypass cross section is open and the cross section of the flue gas duct is closed. For this purpose, the flaps are expediently in a common flap arranged pen housing, the length of which is approximately 5 to 10% of the width and / or the height.
Die mit der Erfindung erzielten Vorteile bestehen insbeson- dere darin, daß der Abhitzekanal durch Verschließen des Querschnitts des Rauchgaskanals beim Drehbetrieb der abge¬ schalteten Gasturbine nur langsam abkühlt, wobei die durch die Gasturbine strömende Luft über den Bypassquerschnitt des Rauchgaskanals abströmen kann. Durch die langsame Abkühlung des Abhitzedampferzeugers in der Stillstandsphase der Gas¬ turbine sind die Wärmeverluste im Abhitzedampferzeuger und die Temperaturwechselbelastungen der Bauteile des Abhitze¬ dampferzeugers besonders gering. Der geringe Wärmeverlust ermöglicht kurze Betriebszeiten für einen eventuell bereit- gestellten Hilfskessel, so daß bei gleichzeitig geringer Um¬ weltbelastung niedrige Betriebskosten und eine lange Lebens¬ dauer der Anlage erzielt werden.The advantages achieved by the invention are, in particular, that the waste heat duct cools down only slowly when the cross section of the flue gas duct is closed when the gas turbine is switched off, the air flowing through the gas turbine being able to flow out via the bypass cross section of the flue gas duct. Due to the slow cooling of the heat recovery steam generator in the standstill phase of the gas turbine, the heat losses in the heat recovery steam generator and the thermal shock loads on the components of the heat recovery steam generator are particularly low. The low heat loss enables short operating times for any auxiliary boiler that may be provided, so that low operating costs and a long service life of the system are achieved with a simultaneously low environmental impact.
Ein Ausführungsbeispiel der Erfindung wird anhand einer Zeichnung näher erläutert. Sie zeigt eine vereinfachte Sei¬ tenansicht einer Gasturbinenanlage mit einer Klappenanordnung im Rauchgaskanal.An embodiment of the invention is explained in more detail with reference to a drawing. It shows a simplified side view of a gas turbine system with a flap arrangement in the flue gas duct.
Die Gasturbinenanlage 1 umfaßt eine Gasturbine 2 und einen dieser über einen Rauchgaskanal 4 nachgeschalteten Abhitze¬ dampferzeuger 6, an den über eine Dampfleitung 8 eine Dampf¬ turbine 10 angeschlossen ist.The gas turbine system 1 comprises a gas turbine 2 and a waste heat generator 6 connected to it via a flue gas duct 4, to which a steam turbine 10 is connected via a steam line 8.
Beim Betrieb der Anlage 1 strömt heißes Rauchgas RG in Rich- tung des Pfeils 12 über den Rauchgaskanal 4 und durch den Ab¬ hitzedampferzeuger 6. Die im heißen Rauchgas RG enthaltene Wärme wird über innerhalb des Abhitzedampferzeugers 6 ange¬ ordneten Heizflächen 14 an einen (nicht dargestellten) Was¬ ser-Dampf-Kreislauf der Dampfturbine 10 übertragen. Das ab- gekühlte Rauchgas RG verläßt den Abhitzedampferzeuger 6 über dessen Kamin 16. Innerhalb des Rauchgaskanals 4 sind zum Verschließen des ge¬ samten Rauchgaskanalquerschnitts jalousieartig angeordnete Klappen 18 als Teil einer Schieberanordnung vorgesehen. Ein weiterer Teil der Schieberanordnung wird durch eine Bypass- klappe 24 gebildet, die zum Verschließen des Querschnitts ei¬ ner Bypassöffnung 26 dient. Die Schieberanordnung mit den Klappen 18 und 24 ist in einem gemeinsamen Klappengehäuse 28 angeordnet. Die Länge A des Klappengehäuses 28 beträgt bei einem z.B. 5 bis 8 m breiten und 5 bis 8 m hohen Klappenge- h use 28 etwa 0,25 bis 0,8 m.During operation of the system 1, hot flue gas RG flows in the direction of arrow 12 over the flue gas duct 4 and through the heat recovery steam generator 6. The heat contained in the hot flue gas RG is passed to one (not.) Via heating surfaces 14 arranged within the heat recovery steam generator 6 ) shown water-steam cycle of the steam turbine 10. The cooled flue gas RG leaves the heat recovery steam generator 6 via its chimney 16. Flaps 18, which are arranged in the manner of a louver and are part of a slide arrangement, are provided within the flue gas duct 4 to close the entire flue gas duct cross section. Another part of the slide arrangement is formed by a bypass flap 24, which serves to close the cross section of a bypass opening 26. The slide arrangement with the flaps 18 and 24 is arranged in a common flap housing 28. The length A of the flap housing 28 is approximately 0.25 to 0.8 m in the case of a flap housing 28, for example 5 to 8 m wide and 5 to 8 m high.
Die Klappen 18 sind über ein ihnen gemeinsames Gestänge 30 mit einem elektrisch, hydraulisch oder pneumatisch betriebe¬ nen Antrieb 32 verbunden. Der Antrieb 32 ist über ein weite- res Gestänge 34 auch mit der Bypassklappe 24 verbunden, so daß die Klappen 18 und 24 stets gleichzeitig betätigt werden. Anstelle der Klappen 18 kann auch ein Schieber zum Verschließen des Rauchgaskanalquerschnitts verwendet werden.The flaps 18 are connected to an electrically, hydraulically or pneumatically operated drive 32 via a linkage 30 common to them. The drive 32 is also connected to the bypass flap 24 via a further linkage 34, so that the flaps 18 and 24 are always actuated simultaneously. Instead of the flaps 18, a slide can also be used to close the flue gas duct cross section.
Bei abgeschalteter Gasturbine 2, d.h. wenn diese im Drehbe¬ trieb läuft, wird bei offenem (nicht dargestelltem) Ansaug¬ kanal über eine Zeitdauer von mehreren Stunden Luft L zum Abkühlen der Gasturbine 2 durch diese hindurchgeführt. Bei einer Drehzahl der Gasturbine von etwa 600 bis 700 U/min wer- den mittels des Antriebs 32 die Klappen 18 und gleichzeitig die Bypassklappe 24 betätigt, so daß der Querschnitt des Rauchgaskanals 4 verschlossen und der Querschnitt der Bypass¬ öffnung 26 geöffnet ist. Der Abhitzedampferzeuger 6 ist dann eingangsseitig verschlossen, so daß dort keine Zwangsabküh- lung erfolgt. Die zur Kühlung der Gasturbine 2 dienende Luft L wird über die Bypassöffnung 26 in Richtung des Pfeils 36 abgeführt. Die Bypassöffnung 26 ist mit einem Deckel oder Dach 27 versehen und mündet in die freie Atmosphäre. With the gas turbine 2 switched off, i.e. When the latter is running in rotary mode, air L is passed through the gas turbine 2 for cooling it over a period of several hours when the intake duct is open (not shown). At a speed of the gas turbine of approximately 600 to 700 rpm, the flaps 18 and the bypass flap 24 are actuated by means of the drive 32, so that the cross section of the flue gas duct 4 is closed and the cross section of the bypass opening 26 is open. The heat recovery steam generator 6 is then closed on the inlet side, so that there is no forced cooling there. The air L used for cooling the gas turbine 2 is discharged via the bypass opening 26 in the direction of the arrow 36. The bypass opening 26 is provided with a cover or roof 27 and opens into the free atmosphere.

Claims

Patentansprüche Claims
1. Gasturbinenanlage mit einem der Gasturbine (2) über einen Rauchgaskanal (4) nachgeschalteten Abhitzedampferzeuger (6) zur Erzeugung von Dampf, insbesondere für eine Dampfturbine (10), g e k e n n z e i c h n e t d u r c h eine Schie¬ beranordnung (18, 24) zum Verschließen des Querschnitts des Rauchgaskanals (4) bei gleichzeitigem Öffnen eines Bypass¬ querschnitts (26) zum Abführen von durch die Gasturbine ge- führter Luft (L) .1. Gas turbine system with one of the gas turbines (2) via a flue gas duct (4) downstream waste heat generator (6) for generating steam, in particular for a steam turbine (10), characterized by a slide arrangement (18, 24) for closing the cross section of the flue gas duct (4) with simultaneous opening of a bypass cross section (26) for removing air (L) passed through the gas turbine.
2. Anlage nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß zum Ver¬ schließen des Querschnitts des Rauchgaskanals (4) eine Anzahl von jalousieartig angeordneten Rauchgasklappen (18) vorgese¬ hen sind, und daß zum Öffnen des Bypassquerschnitts (26) min¬ destens eine Bypassklappe (24) vorgesehen ist.2. Installation according to claim 1, characterized in that for closing the cross section of the flue gas duct (4) a number of blind gas flaps (18) are provided, and that for opening the bypass cross section (26) at least one bypass flap ( 24) is provided.
3. Anlage nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , daß die By¬ passklappe (24) und die Rauchgasklappen (18) mit einem ge¬ meinsamen Antrieb (32) gleichzeitig betätigbar sind.3. System according to claim 2, so that the bypass flap (24) and the flue gas flaps (18) can be actuated simultaneously with a common drive (32).
4. Anlage nach Anspruch 2 oder 3, d a d u r c h g e k e n n z e i c h n e t , daß die By¬ passklappe (24) und die Rauchgasklappen (18) in einem ihnen gemeinsamen Klappengehäuse (28) angeordnet sind, wobei die Länge (A) des Klappengehäuses (28) etwa 5 bis 10 % der Breite und/oder der Höhe beträgt. 4. Plant according to claim 2 or 3, characterized in that the By¬ pass flap (24) and the flue gas flaps (18) are arranged in a common flap housing (28), the length (A) of the flap housing (28) about 5 to 10% of the width and / or the height.
PCT/DE1994/000616 1993-06-15 1994-06-01 Gas-turbine installation with series-connected waste-heat steam generator WO1994029643A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934319732 DE4319732A1 (en) 1993-06-15 1993-06-15 Gas turbine system with downstream heat recovery steam generator
DEP4319732.9 1993-06-15

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WO1994029643A1 true WO1994029643A1 (en) 1994-12-22

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WO2021259570A1 (en) * 2020-06-22 2021-12-30 Siemens Aktiengesellschaft Gas and steam turbine power plant and method for retrofitting such a plant

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FR2730761B1 (en) * 1995-02-16 1997-04-30 Gec Alsthom Cycles Combines Sa DEVICE FOR MAINTAINING THE PRESSURE OF THE STEAM IN A RECOVERY BOILER
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