EP1026369A1 - Steam turbine - Google Patents

Steam turbine Download PDF

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Publication number
EP1026369A1
EP1026369A1 EP99810092A EP99810092A EP1026369A1 EP 1026369 A1 EP1026369 A1 EP 1026369A1 EP 99810092 A EP99810092 A EP 99810092A EP 99810092 A EP99810092 A EP 99810092A EP 1026369 A1 EP1026369 A1 EP 1026369A1
Authority
EP
European Patent Office
Prior art keywords
steam turbine
steam
control
control valves
same
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
Application number
EP99810092A
Other languages
German (de)
French (fr)
Other versions
EP1026369B1 (en
Inventor
Ivan Kukalj
Franz Suter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Technology GmbH
Original Assignee
ABB Alstom Power Switzerland Ltd
Alstom Power Schweiz AG
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 ABB Alstom Power Switzerland Ltd, Alstom Power Schweiz AG filed Critical ABB Alstom Power Switzerland Ltd
Priority to DE59907932T priority Critical patent/DE59907932D1/en
Priority to EP99810092A priority patent/EP1026369B1/en
Priority to US09/495,480 priority patent/US6302644B1/en
Priority to JP2000028341A priority patent/JP2000227007A/en
Publication of EP1026369A1 publication Critical patent/EP1026369A1/en
Application granted granted Critical
Publication of EP1026369B1 publication Critical patent/EP1026369B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/61—Assembly methods using limited numbers of standard modules which can be adapted by machining
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y10S415/915—Pump or portion thereof by casting or molding

Definitions

  • the invention relates to a steam turbine Regulation of live steam inflow.
  • Steam turbines with nozzle group control are known, at which the first turbine stage, too Called control stage, the steam turbine with a plurality of pressurized sectors, their steam inflow adjustable by a special control valve is. In such steam turbines, at least three or more control valves available.
  • Steam turbines without nozzle group control are also known or without control level. Such steam turbines are up to 180 MW with min. a control valve until 600 MW with two control valves and over 600 MW with four Control valves built.
  • the turbine housing of steam turbines with Control stages are constructed differently than the turbine housing of steam turbines without control stage.
  • the invention is based on the object a reduction of the cast models and the modules, in particular for the turbine casing and thereby lower To achieve set-up times and lower costs.
  • this is achieved by that on a steam turbine with or without control stage the Number of control valves for regulating the fresh steam inflow is the same, with at least two control valves are, and that the turbine outer casing at least in Area of the live steam inlet section of a steam turbine structurally identical with or without control stage is.
  • the high pressure steam turbines shown in FIGS. 1 and 2 consist of two housings, the outer housing 1 and the inner casing 2.
  • the turbine runner is not shown.
  • the outer housing 1 consists in each case from an upper housing part 3 and a lower one Housing part 4, the horizontal flange connection are interconnected.
  • the one stored in the outer housing Inner housing is also separated horizontally and has an upper housing part 5 and a lower housing part 6.
  • valve body block 7 In the steam turbines shown in FIGS. 1 and 2 are in a valve housing block 7 two control valves 8, 9 and a quick-action valve 10 are combined.
  • the valve body block is over the body of the Control valve 8 by means of a flange connection on the side upper outer housing part 3 attached.
  • One with the outlet of the control valve 8 connected connecting pipe 11 extends into the upper part of the outer housing and opens laterally into the interior of the inner housing 2.
  • the outlet of the control valve 9 is with the one leg of a downward and U-shaped bent connecting line 12 connected to her another leg on one on the lower outer housing part 4 flanged intermediate piece 13 is welded.
  • the Connection line 12 opens into a with the intermediate piece 13 connected connecting pipe 14.
  • the connecting pipe 14 extends into the lower housing part 4 of the outer housing and flows into the interior of the Inner housing 2.
  • the quick-action valve 10 has the task in the event of a rapid fire, the steam supply to the control valves 8 and 9 and thus to interrupt the turbine. It is as Security body designed and is not by one shown servo motor operated.
  • the two control valves 8 and 9 are used for Regulation of the steam flow. They are not represented by hydraulic actuators actuated.
  • the steam turbines according to FIGS. 1 and 2 differ in that the steam turbine according to Fig. 1 has a control stage and the steam turbine according to Fig. 2 is designed without a control stage.
  • the same valve housing block 7 is present, which is also in the same way on the turbine outer casing is flanged. Thanks in particular to the fact that for both types, i.e. Type with or without control stage, the same number of control valves is present and their connection arrangement and connection with respect to the Outer housing 1 and the inner housing 2 designed the same is a reduction of cast models and a reduction achieved by modules. This enables, in particular the outer housing 1 and also the valve housing block with the connections for both types of steam turbine structurally the same.
  • Fig. 1 With the steam turbine with control stage according to Fig. 1 are the inlet channels or nozzle boxes 15, 16 in Inner housing 2 integrated. That the nozzle boxes 15, 16 in Control wheel downstream of the steam flow direction is not shown.
  • the inlet channels or nozzle boxes 15, 16 are separated from each other by two partitions 17, 18, that the nozzle box 15 has a larger sector and thus a larger passage area for the live steam forms as the nozzle box 16.
  • Control valve 8 opens opens into the nozzle box 15 and control valve 9 from above from below in the nozzle box 16.
  • the two control valves can be different large openings adapted to the nozzle segments be provided.
  • Each control valve is independent in Opening and closing directions can be actuated.
  • the live steam becomes the valve housing block 7 supplied, it flows through the quick-action valve 10 and reaches the control valves arranged one behind the other 8, 9. After the control valves 8, 9, the steam is the Nozzle boxes 15, 16 and the nozzles, not shown Control stage fed.
  • the inner housing has no nozzle boxes. It there is also no control wheel. Are accordingly in the inlet section of the inner housing 2 also no partition walls 17, 18 present, so that a single annulus 19 is formed, the live steam over the two Control valves 8, 9 is supplied. Otherwise correspond the components of the steam turbine without control stage according to the Fig. 2, the components of the steam turbine shown in Fig. 1 with control level. Accordingly, the same components have the same reference numbers and it will in this regard, reference is made to the above description.
  • the high pressure steam turbines shown in FIGS. 3 and 4 differ in type and Way of construction and connection of the valve housing block. Otherwise, there are those shown in FIGS. 3 and 4 Steam turbines also from two housings, the outer housing 101 and the inner case 102.
  • the outer case consists of an upper housing part 103 and a lower housing part, not shown, the with flange connection, not shown, with each other are connected.
  • the inner housing stored in the outer housing is also separated horizontally and has one upper housing part 105.
  • the lower part of the inner casing is also not shown.
  • the steam turbines shown in FIGS. 3 and 4 each have a valve housing block 107, in which two Control valves 108, 109 and a quick-action valve 110 are installed.
  • the valve housing block 107 is on the Outer housing upper part 103 put on and by means of double Flange connection connected to this.
  • One with each connecting pipe connected to the outlets of the control valves 108, 109 111, 114 extends into the upper part 101 of the outer housing and opens into the Interior of inner housing 102.
  • the task and function of the quick-action valve 110 and the control valves 108, 109 is the same as in the steam turbines according to FIGS. 1 and 2. Die Differences and similarities of the steam turbines according to 3 and 4 are also the same as regarding the Steam turbines according to FIGS. 1 and 2. It is therefore in this relationship referred to the above statements.
  • the two types are different of the steam turbines with control stage according to FIG. 3 and without Control stage according to FIG. 4 in turn only a partial area of the inner case, due to the presence or the absence of the control level.
  • At the steam turbine 1 are in the inner housing 102 integrated nozzle boxes 115, 116 in turn through partitions, of which only those in the upper part of the inner housing partition 117 located is shown, separated from each other so that the one nozzle box one larger sector and thus a larger passage area forms for the live steam than the other nozzle box.
  • load points and training and mode of operation of the control valves and the live steam supply the statements already made for Fig. 1.
  • the turbine outer casing, the valve assembly and Parts of the inner casing for both a steam turbine certain types with and without a control level because they are structurally the same and in Size and shape match.
  • control valves of the valve assembly have generally equal openings. In special cases however, they can also have differently sized passage openings exhibit.
  • the same cast model can be used for the outer case for turbines, with and without control stage become.
  • valves and valve dispositions can be used for turbines with and without control stage be used.
  • FIG. 5 shows the upper part of a cast model 120 from above, with inserted cores 121, 122 and 123, that for the manufacture of the upper outer housing part a steam turbine according to FIG. 3 or FIG. 4 is used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

Steam turbines with or without regulation stage are built with the same amount of control valves (8, 9) for the steam inlet, and respectively two control valves are preferably provided. The valve assembly group (7), the outer turbine casing (1), and parts of the inner turbine casing (2) are built constructively equal, and can be used for steam turbines with or without regulation stage. The inner casing is equipped with integrated nozzle boxes (15,16) separated through partitions (17 18), in case of a steam turbine with regulation stage, and nozzle boxes and partitions are missing in steam turbines without regulation stage. An Independent claim is included for manufacturing an outer casing of steam turbine.

Description

Technisches GebietTechnical field

Die Erfindung betrifft eine Dampfturbine mit Regelung des Frischdampfzuflusses.The invention relates to a steam turbine Regulation of live steam inflow.

Stand der TechnikState of the art

Bekannt sind Dampfturbinen mit Düsengruppenregelung, bei welcher die erste Turbinenstufe, auch Regelstufe genannt, der Dampfturbine mit einer Mehrzahl von Beaufschlagungssektoren ausgerüstet ist, deren Dampfzufluss von je einem besonderen Regelventil einstellbar ist. Bei solchen Dampfturbinen sind jeweils mindestens drei oder mehr Regelventile vorhanden.Steam turbines with nozzle group control are known, at which the first turbine stage, too Called control stage, the steam turbine with a plurality of pressurized sectors, their steam inflow adjustable by a special control valve is. In such steam turbines, at least three or more control valves available.

Bekannt sind auch Dampfturbinen ohne Düsengruppenregelung bzw. ohne Regelstufe. Solche Dampfturbinen werden bis 180 MW mit min. einem Regelventil, bis 600 MW mit zwei Regelventilen und über 600 MW mit vier Regelventilen gebaut.Steam turbines without nozzle group control are also known or without control level. Such steam turbines are up to 180 MW with min. a control valve until 600 MW with two control valves and over 600 MW with four Control valves built.

Die Turbinengehäuse von Dampfturbinen mit Regelstufe sind konstruktiv anders gebaut als die Turbinengehäuse von Dampfturbinen ohne Regelstufe.The turbine housing of steam turbines with Control stages are constructed differently than the turbine housing of steam turbines without control stage.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, eine Reduktion der Gussmodelle und der Module, insbesondere für die Turbinengehäuse zu erreichen und dadurch geringere Rüstzeiten und geringere Kosten zu erzielen. The invention is based on the object a reduction of the cast models and the modules, in particular for the turbine casing and thereby lower To achieve set-up times and lower costs.

Erfindungsgemäss wird dies dadurch erreicht, dass an einer Dampfturbine mit oder ohne Regelstufe die Anzahl Regelventile zur Regelung des Frischdampfzuflusses gleich ist, wobei mindestens zwei Regelventile vorhanden sind, und dass das Turbinenaussengehäuse mindestens im Bereich der Frischdampfeintrittspartie einer Dampfturbine mit oder ohne Regelstufe konstruktiv gleich ausgestaltet ist.According to the invention, this is achieved by that on a steam turbine with or without control stage the Number of control valves for regulating the fresh steam inflow is the same, with at least two control valves are, and that the turbine outer casing at least in Area of the live steam inlet section of a steam turbine structurally identical with or without control stage is.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

In den Zeichnungen sind Ausführungsbeispiele der erfindungsgemässen Dampfturbine vereinfacht dargestellt.Exemplary embodiments are shown in the drawings of the steam turbine according to the invention is shown in simplified form.

Es zeigen:

  • Fig. 1 einen Querschnitt im Bereich des Frischdampfzuflusses einer ersten Ausführungsform einer HD-Dampfturbine mit Regelstufe;
  • Fig. 2 einen Querschnitt im Bereich des Frischdampfzuflusses der Ausführungsform einer HD-Dampfturbine nach Fig. 1 ohne Regelstufe;
  • Fig. 3 einen Querschnitt im Bereich des Frischdampfzuflusses einer zweiten Ausführungsform einer HD-Dampfturbine mit Regelstufe;
  • Fig. 4 einen Querschnitt im Bereich des Frischdampfzuflusses der Ausführungsform einer HD-Dampfturbine nach Fig. 3 ohne Regelstufe und
  • Fig. 5 eine schaubildliche Ansicht auf das Gussmodell des oberen Gehäuseteiles des Aussengehäuses einer Dampfturbine nach Fig. 3 und 4.
    • Show it:
  • 1 shows a cross section in the area of the live steam inflow of a first embodiment of an HP steam turbine with control stage;
  • FIG. 2 shows a cross section in the area of the live steam inflow of the embodiment of an HP steam turbine according to FIG. 1 without a control stage;
  • 3 shows a cross section in the area of the live steam inflow of a second embodiment of an HP steam turbine with control stage;
  • FIG. 4 shows a cross section in the area of the live steam inflow of the embodiment of a high-pressure steam turbine according to FIG. 3 without control stage and
  • 5 shows a perspective view of the cast model of the upper housing part of the outer housing of a steam turbine according to FIGS. 3 and 4.

    • Wege zur Ausführung der ErfindungWays of Carrying Out the Invention

    Die in den Fig. 1 und 2 dargestellten Hochdruck-Dampfturbinen bestehen aus zwei Gehäusen, dem Aussengehäuse 1 und dem Innengehäuse 2. Der Turbinenläufer ist nicht dargestellt. Das Aussengehäuse 1 besteht jeweils aus einem oberen Gehäuseteil 3 und einem unteren Gehäuseteil 4, die mit horizontaler Flanschverbindung miteinander verbunden sind. Das im Aussengehäuse gelagerte Innengehäuse ist ebenfalls horizontal getrennt und besitzt einen oberen Gehäuseteil 5 und einen unteren Gehäuseteil 6.The high pressure steam turbines shown in FIGS. 1 and 2 consist of two housings, the outer housing 1 and the inner casing 2. The turbine runner is not shown. The outer housing 1 consists in each case from an upper housing part 3 and a lower one Housing part 4, the horizontal flange connection are interconnected. The one stored in the outer housing Inner housing is also separated horizontally and has an upper housing part 5 and a lower housing part 6.

    Bei den in Fig. 1 und 2 dargestellten Dampfturbinen sind in einem Ventilgehäuseblock 7 zwei Regelventile 8, 9 und ein Schnellschussventil 10 zusammengefasst. Der Ventilgehäuseblock ist über das Gehäuse des Regelventils 8 mittels Flanschverbindung seitlich am oberen Aussengehäuseteil 3 angebracht. Ein mit dem Auslass des Regelventils 8 verbundenes Verbindungsrohr 11 erstreckt sich in den oberen Teil des Aussengehäuses hinein und mündet seitlich oben in den Innenraum des Innengehäuses 2. Der Auslass des Regelventils 9 ist mit dem einen Schenkel einer nach unten geführten und U-förmig gebogenen Verbindungsleitung 12 verbunden, die mit ihrem anderen Schenkel an einem am unteren Aussengehäuseteil 4 angeflanschten Zwischenstück 13 angeschweisst ist. Die Verbindungsleitung 12 mündet in ein mit dem Zwischenstück 13 verbunden Verbindungsrohr 14. Das Verbindungsrohr 14 erstreckt sich in den unteren Gehäuseteil 4 des Aussengehäuses hinein und mündet unten in den Innenraum des Innengehäuses 2.In the steam turbines shown in FIGS. 1 and 2 are in a valve housing block 7 two control valves 8, 9 and a quick-action valve 10 are combined. The valve body block is over the body of the Control valve 8 by means of a flange connection on the side upper outer housing part 3 attached. One with the outlet of the control valve 8 connected connecting pipe 11 extends into the upper part of the outer housing and opens laterally into the interior of the inner housing 2. The outlet of the control valve 9 is with the one leg of a downward and U-shaped bent connecting line 12 connected to her another leg on one on the lower outer housing part 4 flanged intermediate piece 13 is welded. The Connection line 12 opens into a with the intermediate piece 13 connected connecting pipe 14. The connecting pipe 14 extends into the lower housing part 4 of the outer housing and flows into the interior of the Inner housing 2.

    Das Schnellschussventil 10 hat die Aufgabe, im Schnellschussfall die Dampfzufuhr zu den Regelventilen 8 und 9 und damit zur Turbine zu unterbrechen. Es ist als Sicherheitsorgan konzipiert und wird durch einen nicht dargestellten Servomotor betätigt.The quick-action valve 10 has the task in the event of a rapid fire, the steam supply to the control valves 8 and 9 and thus to interrupt the turbine. It is as Security body designed and is not by one shown servo motor operated.

    Die zwei Regelventile 8 und 9 dienen zur Regelung des Dampfstromes. Sie werden durch nicht dargestellte hydraulische Stellglieder betätigt.The two control valves 8 and 9 are used for Regulation of the steam flow. They are not represented by hydraulic actuators actuated.

    Die Dampfturbinen gemäss den Fig. 1 und 2 unterscheiden sich dadurch, dass die Dampfturbine gemäss Fig. 1 eine Regelstufe aufweist und die Dampfturbine gemäss Fig. 2 ohne Regelstufe ausgebildet ist. In beiden Fällen ist der gleiche Ventilgehäuseblock 7 vorhanden, der auch in gleicher Art und Weise am Turbinenaussengehäuse angeflanscht ist. Dank insbesondere der Tatsache, dass für beide Bauarten, d.h. Bauart mit oder ohne Regelstufe, die gleiche Anzahl Regelventile vorhanden ist und deren Verbindungsanordnung und Anschluss in bezug auf das Aussengehäuse 1 und das Innengehäuse 2 gleich gestaltet ist, wird eine Reduktion von Gussmodellen und eine Reduktion von Modulen erzielt. Dadurch wird ermöglicht, insbesondere das Aussengehäuse 1 und auch den Ventilgehäuseblock mit den Anschlüssen für beide Bauarten einer Dampfturbine konstruktiv gleich zu gestalten.The steam turbines according to FIGS. 1 and 2 differ in that the steam turbine according to Fig. 1 has a control stage and the steam turbine according to Fig. 2 is designed without a control stage. In both The same valve housing block 7 is present, which is also in the same way on the turbine outer casing is flanged. Thanks in particular to the fact that for both types, i.e. Type with or without control stage, the same number of control valves is present and their connection arrangement and connection with respect to the Outer housing 1 and the inner housing 2 designed the same is a reduction of cast models and a reduction achieved by modules. This enables, in particular the outer housing 1 and also the valve housing block with the connections for both types of steam turbine structurally the same.

    Unterschiedlich ist bei beiden Bauarten lediglich ein Teilbereich des Innengehäuses.It is different for both types only a portion of the inner case.

    Bei der Dampfturbine mit Regelstufe gemäss Fig. 1 sind die Einlaufkanäle bzw. Düsenkästen 15, 16 im Innengehäuse 2 integriert. Das den Düsenkästen 15, 16 in Dampfflussrichtung nachgeschaltete Regelrad ist nicht dargestellt.With the steam turbine with control stage according to Fig. 1 are the inlet channels or nozzle boxes 15, 16 in Inner housing 2 integrated. That the nozzle boxes 15, 16 in Control wheel downstream of the steam flow direction is not shown.

    Die Einlaufkanäle bzw. Düsenkästen 15, 16 sind durch zwei Zwischenwände 17, 18 voneinander so getrennt, dass der Düsenkasten 15 einen grösseren Sektor und damit eine grössere Durchlassfläche für den Frischdampf bildet als der Düsenkasten 16. Regelventil 8 mündet von oben in den Düsenkasten 15 und Regelventil 9 mündet von unten in den Düsenkasten 16.The inlet channels or nozzle boxes 15, 16 are separated from each other by two partitions 17, 18, that the nozzle box 15 has a larger sector and thus a larger passage area for the live steam forms as the nozzle box 16. Control valve 8 opens opens into the nozzle box 15 and control valve 9 from above from below in the nozzle box 16.

    Mit zwei Stellventilen mit, wie dargestellt in Fig. 1, zwei verschieden grossen nachgeschalteten Düsensegmenten, können drei optimale Lastpunkte gefahren werden.With two control valves with, as shown in Fig. 1, two different sizes downstream Nozzle segments, three optimal load points can be driven become.

    Die zwei Regelventile können mit verschieden grossen, den Düsensegmenten angepassten Durchlassöffnungen versehen sein. Jedes Regelventil ist unabhängig in Öffnungs- und Schliessrichtung betätigbar.The two control valves can be different large openings adapted to the nozzle segments be provided. Each control valve is independent in Opening and closing directions can be actuated.

    Der Frischdampf wird dem Ventilgehäuseblock 7 zugeführt, er durchströmt das Schnellschussventil 10 und gelangt zu den hintereinander angeordneten Regelventilen 8, 9. Nach den Regelventilen 8, 9 wird der Dampf den Düsenkästen 15, 16 und den nicht dargestellten Düsen der Regelstufe zugeführt.The live steam becomes the valve housing block 7 supplied, it flows through the quick-action valve 10 and reaches the control valves arranged one behind the other 8, 9. After the control valves 8, 9, the steam is the Nozzle boxes 15, 16 and the nozzles, not shown Control stage fed.

    Bei der Dampfturbine ohne Regelstufe gemäss Fig. 2 weist das Innengehäuse keine Düsenkästen auf. Es ist auch kein Regelrad vorhanden. Dementsprechend sind in der Einlaufpartie des Innengehäuses 2 auch keine Zwischenwände 17, 18 vorhanden, so dass ein einziger Ringraum 19 gebildet ist, dem der Frischdampf über die beiden Regelventile 8, 9 zugeführt wird. Im übrigen entsprechen die Bauteile der Dampfturbine ohne Regelstufe gemäss der Fig. 2, den in Fig. 1 dargestellten Bauteilen der Dampfturbine mit Regelstufe. Dementsprechend weisen die gleichen Bauteile gleiche Bezugsziffern auf und es wird diesbezüglich auf die obige Beschreibung verwiesen.With the steam turbine without control stage according to Fig. 2, the inner housing has no nozzle boxes. It there is also no control wheel. Are accordingly in the inlet section of the inner housing 2 also no partition walls 17, 18 present, so that a single annulus 19 is formed, the live steam over the two Control valves 8, 9 is supplied. Otherwise correspond the components of the steam turbine without control stage according to the Fig. 2, the components of the steam turbine shown in Fig. 1 with control level. Accordingly, the same components have the same reference numbers and it will in this regard, reference is made to the above description.

    Die in den Fig. 3 und 4 dargestellten Hochdruck-Dampfturbinen unterscheiden sich in der Art und Weise des Aufbaues und des Anschlusses des Ventilgehäuseblocks. Im übrigen bestehen die in Fig. 3 und 4 dargestellten Dampfturbinen auch aus zwei Gehäusen, dem Aussengehäuse 101 und dem Innengehäuse 102. Das Aussengehäuse besteht jeweils aus einem oberen Gehäuseteil 103 und einem nicht dargestellten unteren Gehäuseteil, die mit nicht dargestellter Flanschverbindung miteinander verbunden sind. Das im Aussengehäuse gelagerte Innengehäuse ist ebenfalls horizontal getrennt und besitzt einen oberen Gehäuseteil 105.The high pressure steam turbines shown in FIGS. 3 and 4 differ in type and Way of construction and connection of the valve housing block. Otherwise, there are those shown in FIGS. 3 and 4 Steam turbines also from two housings, the outer housing 101 and the inner case 102. The outer case consists of an upper housing part 103 and a lower housing part, not shown, the with flange connection, not shown, with each other are connected. The inner housing stored in the outer housing is also separated horizontally and has one upper housing part 105.

    Der untere Innengehäuseteil ist ebenfalls nicht dargestellt.The lower part of the inner casing is also not shown.

    Die Dampfturbinen gemäss Fig. 3 und 4 weisen jeweils einen Ventilgehäuseblock 107 auf, in welchem zwei Regelventile 108, 109 und ein Schnellschussventil 110 eingebaut sind. Der Ventilgehäuseblock 107 ist auf dem Aussengehäuseoberteil 103 aufgesetzt und mittels doppelter Flanschverbindung mit diesem verbunden. Je ein mit den Auslässen der Regelventile 108, 109 verbundenes Verbindungsrohr 111, 114 erstreckt sich in den oberen Teil 101 des Aussengehäuses hinein und mündet von oben in den Innenraum des Innengehäuses 102.The steam turbines shown in FIGS. 3 and 4 each have a valve housing block 107, in which two Control valves 108, 109 and a quick-action valve 110 are installed. The valve housing block 107 is on the Outer housing upper part 103 put on and by means of double Flange connection connected to this. One with each connecting pipe connected to the outlets of the control valves 108, 109 111, 114 extends into the upper part 101 of the outer housing and opens into the Interior of inner housing 102.

    Die Aufgabe und Funktion des Schnellschussventils 110 und der Regelventile 108, 109 ist die gleiche wie bei den Dampfturbinen gemäss den Fig. 1 und 2. Die Unterschiede und Gemeinsamkeiten der Dampfturbinen gemäss Fig. 3 und 4 sind ebenfalls gleich wie betreffend die Dampfturbinen gemäss den Fig. 1 und 2. Es wird deshalb in dieser Beziehung auf die vorstehenden Ausführungen verwiesen.The task and function of the quick-action valve 110 and the control valves 108, 109 is the same as in the steam turbines according to FIGS. 1 and 2. Die Differences and similarities of the steam turbines according to 3 and 4 are also the same as regarding the Steam turbines according to FIGS. 1 and 2. It is therefore in this relationship referred to the above statements.

    Unterschiedlich ist bei den beiden Bauarten der Dampfturbinen mit Regelstufe gemäss Fig. 3 und ohne Regelstufe gemäss Fig. 4 wiederum lediglich ein Teilbereich des Innengehäuses, bedingt durch das Vorhandensein bzw. Nichtvorhandensein der Regelstufe. Bei der Dampfturbine mit Regelstufe gemäss Fig. 1 sind die im Innengehäuse 102 integrierten Düsenkästen 115, 116 wiederum durch Zwischenwände, von denen nur die im oberen Innengehäuseteil befindliche Zwischenwand 117 dargestellt ist, voneinander so getrennt, dass der eine Düsenkasten einen grösseren Sektor und damit eine grössere Durchlassfläche bildet für den Frischdampf als der andere Düsenkasten. Auch hier gilt betreffend die Lastpunkte und die Ausbildung und Wirkungsweise der Regelventile sowie die Frischdampfzuführung, die schon zu Fig. 1 gemachten Ausführungen.The two types are different of the steam turbines with control stage according to FIG. 3 and without Control stage according to FIG. 4 in turn only a partial area of the inner case, due to the presence or the absence of the control level. At the steam turbine 1 are in the inner housing 102 integrated nozzle boxes 115, 116 in turn through partitions, of which only those in the upper part of the inner housing partition 117 located is shown, separated from each other so that the one nozzle box one larger sector and thus a larger passage area forms for the live steam than the other nozzle box. The same applies here regarding load points and training and mode of operation of the control valves and the live steam supply, the statements already made for Fig. 1.

    Bei der Dampfturbine ohne Regelstufe gemäss Fig. 4 gilt das betreffend der Ausführungsform gemäss Fig. 2 weiter oben Ausgeführte. Es fehlen die Düsenkästen und das Regelrad und dementsprechend auch die Zwischenwände, so dass wiederum ein einziger Ringraum 119 vorhanden ist, dem der Frischdampf über die beiden Regelventile 108, 109 zugeführt wird.With the steam turbine without control stage according to 4 applies to the embodiment according to Fig. 2 explained above. The nozzle boxes are missing and the control wheel and accordingly the partitions, so that in turn a single annular space 119 is present is the fresh steam via the two control valves 108, 109 is supplied.

    Bei den erfindungsgemässen Ausführungen können das Turbinenaussengehäuse, die Ventilbaugruppe und Teile des Innengehäuses sowohl für Dampfturbinen eines bestimmten Typs mit, als auch ohne Regelstufe verwendet werden, da sie konstruktiv gleich ausgeführt sind und in Grösse und Form übereinstimmen.In the embodiments according to the invention the turbine outer casing, the valve assembly and Parts of the inner casing for both a steam turbine certain types with and without a control level because they are structurally the same and in Size and shape match.

    Die Stellventile der Ventilbaugruppe haben im allgemeinen gleich grosse Durchlassöffnungen. In Spezialfällen können sie jedoch auch verschieden grosse Durchlassöffnungen aufweisen.The control valves of the valve assembly have generally equal openings. In special cases however, they can also have differently sized passage openings exhibit.

    Zur Herstellung mindestens der Aussengehäuse aus Stahlguss für eine Dampfturbine eines bestimmten Typs, mit oder ohne Regelstufe, kann das gleiche Gussmodell verwendet werden.For the production of at least the outer housing made of cast steel for a steam turbine of a certain Type, with or without control stage, can be the same cast model be used.

    Das gleiche Gussmodell kann für das Aussengehäuse für Turbinen, mit und ohne Regelstufe, verwendet werden.The same cast model can be used for the outer case for turbines, with and without control stage become.

    Die gleichen Ventile und Ventildispositionen (Anordnungen) können für Turbinen mit und ohne Regelstufe verwendet werden.The same valves and valve dispositions (Arrangements) can be used for turbines with and without control stage be used.

    Für die Herstellung der Aussengehäuse der Dampfturbinen nach Fig. 1 und 2 ist somit nur ein Gussmodell, bestehend aus Oberteil und Unterteil, notwendig. Das gleiche gilt für die Dampfturbinen nach Fig. 3 und 4.For the manufacture of the outer casing 1 and 2 is therefore only a cast model, consisting of upper part and lower part, necessary. The same applies to the steam turbines according to FIGS. 3 and 4.

    Die Fig. 5 zeigt den oberen Teil eines Gussmodells 120 von oben, mit eingesetzten Kernen 121, 122 und 123, das für die Herstellung des oberen Aussengehäuseteils einer Dampfturbine nach Fig. 3 oder Fig. 4 verwendet wird. 5 shows the upper part of a cast model 120 from above, with inserted cores 121, 122 and 123, that for the manufacture of the upper outer housing part a steam turbine according to FIG. 3 or FIG. 4 is used.

    BezugszeichenlisteReference list

    11
    AussengehäuseOuter housing
    22nd
    InnengehäuseInner casing
    33rd
    oberer Aussengehäuseteilupper part of the outer casing
    44th
    unterer Aussengehäuseteillower outer housing part
    55
    oberer Innengehäuseteilupper part of the inner casing
    66
    unterer Innengehäuseteillower inner housing part
    77
    VentilgehäuseblockValve housing block
    8,98.9
    RegelventileControl valves
    1010th
    SchnellschussventilQuick-action valve
    1111
    VerbindungsrohrConnecting pipe
    1212th
    VerbindungsleitungConnecting line
    1313
    ZwischenstückSpacer
    1414
    VerbindungsrohrConnecting pipe
    15,1615.16
    DüsenkästeNozzle boxes
    17,1817.18
    ZwischenwändePartitions
    1919th
    RingraumAnnulus
    101101
    AussengehäuseOuter housing
    102102
    InnengehäuseInner casing
    103103
    oberer Aussengehäuseteilupper part of the outer casing
    105105
    oberer Innengehäuseteilupper part of the inner casing
    107107
    VentilgehäuseblockValve housing block
    108,109108.109
    RegelventileControl valves
    110110
    SchnellschussventilQuick-action valve
    111,114111,114
    VerbindungsrohrConnecting pipe
    115,116115.116
    DüsenkästeNozzle boxes
    117117
    ZwischenwandPartition
    119119
    RingraumAnnulus
    120120
    GussmodellCast model
    121,122121.122
    KerneCores
    123123
    Kerncore

    Claims (7)

    Dampfturbine mit Regelung des Frischdampfzuflusses, dadurch gekennzeichnet, dass an einer Dampfturbine mit oder ohne Regelstufe die Anzahl Regelventile zur Regelung des Frischdampfzuflusses gleich ist, wobei mindestens zwei Regelventile vorhanden sind, und dass das Turbinenaussengehäuse mindestens im Bereich der Frischdampfeintrittspartie einer Dampfturbine mit oder ohne Regelstufe konstruktiv gleich ausgestaltet ist.Steam turbine with regulation of the live steam inflow, characterized in that on a steam turbine with or without control stage the number of control valves for regulating the live steam inflow is the same, whereby there are at least two control valves, and that the Turbine outer casing at least in the area of the live steam inlet section a steam turbine with or without Control level is structurally identical. Dampfturbine nach Anspruch 1, dadurch gekennzeichnet, dass zwei Regelventile vorhanden sind.Steam turbine according to claim 1, characterized in that there are two control valves. Dampfturbine nach Anspruch 1, dadurch gekennzeichnet, dass die Regelventile in einem Ventilgehäuseblock angeordnet sind, und der Ventilgehäuseblock für eine Dampfturbine mit oder ohne Regelstufe konstruktiv gleich ausgestaltet ist, so dass er für beide Varianten verwendbar ist.Steam turbine according to claim 1, characterized in that the control valves in a valve body block are arranged, and the valve housing block constructive for a steam turbine with or without control stage is designed the same, so that it is for both variants is usable. Dampfturbine nach Anspruch 1, dadurch gekennzeichnet, dass alle Regelventile gleich grosse Durchlassöffnungen aufweisen.Steam turbine according to claim 1, characterized in that all control valves have the same size openings exhibit. Dampfturbine nach Anspruch 1, dadurch gekennzeichnet, dass bei einer Dampfturbine mit Regelstufe die Düsenflächen der Beaufschlagungssektoren verschieden gross sind.Steam turbine according to claim 1, characterized in that in a steam turbine with control stage the nozzle areas of the application sectors are different are big. Verfahren zur Herstellung des Aussengehäuses einer Dampfturbine nach Patentanspruch 1, dadurch gekennzeichnet, dass mindestens das zur Herstellung der Frischdampfeintrittspartie des Aussengehäuses verwendete Gussmodell für eine Dampfturbine mit oder ohne Regelstufe konstruktiv gleich ausgestaltet ist.Process for the production of the outer casing a steam turbine according to claim 1, characterized characterized in that at least that used to manufacture the Live steam inlet section of the outer casing used Cast model for a steam turbine with or without control stage is structurally the same. Gussmodell zur Herstellung des Aussengehäuses einer Dampfturbine nach Anspruch 1 mit oder ohne Regelstufe, dadurch gekennzeichnet, dass das Gussmodell in Form und Grösse gleich ist.Cast model for the production of the outer housing a steam turbine according to claim 1 with or without Control stage, characterized in that the cast model is the same in shape and size.
    EP99810092A 1999-02-04 1999-02-04 Steam turbine Expired - Lifetime EP1026369B1 (en)

    Priority Applications (4)

    Application Number Priority Date Filing Date Title
    DE59907932T DE59907932D1 (en) 1999-02-04 1999-02-04 steam turbine
    EP99810092A EP1026369B1 (en) 1999-02-04 1999-02-04 Steam turbine
    US09/495,480 US6302644B1 (en) 1999-02-04 2000-02-01 Steam turbine
    JP2000028341A JP2000227007A (en) 1999-02-04 2000-02-04 Steam turbine

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    EP99810092A EP1026369B1 (en) 1999-02-04 1999-02-04 Steam turbine

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    EP1026369A1 true EP1026369A1 (en) 2000-08-09
    EP1026369B1 EP1026369B1 (en) 2003-12-03

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    US (1) US6302644B1 (en)
    EP (1) EP1026369B1 (en)
    JP (1) JP2000227007A (en)
    DE (1) DE59907932D1 (en)

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    ITMI20091872A1 (en) * 2009-10-28 2011-04-29 Alstom Technology Ltd "ENVELOPE SYSTEM FOR A STEAM TURBINE"
    EP2466076A1 (en) * 2010-12-20 2012-06-20 Alstom Technology Ltd High temperature steam valve
    EP2644844A1 (en) * 2012-03-30 2013-10-02 Alstom Technology Ltd Gas turbine with inner and outer housing and method of disassembling the housings
    BE1023377B1 (en) * 2015-08-26 2017-02-28 Safran Aero Boosters S.A. AXIAL TURBOMACHINE COMPRESSOR BOSS CASING

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    US6631858B1 (en) * 2002-05-17 2003-10-14 General Electric Company Two-piece steam turbine nozzle box featuring a 360-degree discharge nozzle
    JP2005113721A (en) * 2003-10-06 2005-04-28 Hitachi Ltd Steam turbine
    US10178965B2 (en) * 2007-06-22 2019-01-15 Ipventure, Inc. Activity monitoring system for pregnant women
    JP2010048216A (en) * 2008-08-25 2010-03-04 Fuji Electric Systems Co Ltd Main steam inlet part of steam turbine
    JP2020097894A (en) * 2018-12-17 2020-06-25 東芝エネルギーシステムズ株式会社 Turbine casing
    EP3744952B1 (en) * 2019-05-31 2022-12-14 Siemens Energy Global GmbH & Co. KG Casing arrangement for fluid power equipment

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    ITMI20091872A1 (en) * 2009-10-28 2011-04-29 Alstom Technology Ltd "ENVELOPE SYSTEM FOR A STEAM TURBINE"
    US8834110B2 (en) 2009-10-28 2014-09-16 Alstom Technology Ltd Steam turbine casing system
    EP2466076A1 (en) * 2010-12-20 2012-06-20 Alstom Technology Ltd High temperature steam valve
    US9091363B2 (en) 2010-12-20 2015-07-28 Alstom Technology Ltd. High temperature steam valve
    EP2644844A1 (en) * 2012-03-30 2013-10-02 Alstom Technology Ltd Gas turbine with inner and outer housing and method of disassembling the housings
    BE1023377B1 (en) * 2015-08-26 2017-02-28 Safran Aero Boosters S.A. AXIAL TURBOMACHINE COMPRESSOR BOSS CASING

    Also Published As

    Publication number Publication date
    DE59907932D1 (en) 2004-01-15
    JP2000227007A (en) 2000-08-15
    EP1026369B1 (en) 2003-12-03
    US6302644B1 (en) 2001-10-16

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