EP1039255B1 - Steam power plant - Google Patents

Steam power plant Download PDF

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Publication number
EP1039255B1
EP1039255B1 EP00105239A EP00105239A EP1039255B1 EP 1039255 B1 EP1039255 B1 EP 1039255B1 EP 00105239 A EP00105239 A EP 00105239A EP 00105239 A EP00105239 A EP 00105239A EP 1039255 B1 EP1039255 B1 EP 1039255B1
Authority
EP
European Patent Office
Prior art keywords
condenser
turbine
power plant
neck
steam power
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.)
Expired - Lifetime
Application number
EP00105239A
Other languages
German (de)
French (fr)
Other versions
EP1039255A1 (en
Inventor
Ulrich Dr.-Ing. Häuser
Pengcheng Dipl.-Ing. Zhang
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.)
Alstom SA
Original Assignee
Alstom SA
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
Priority claimed from DE10005727A external-priority patent/DE10005727A1/en
Application filed by Alstom SA filed Critical Alstom SA
Publication of EP1039255A1 publication Critical patent/EP1039255A1/en
Application granted granted Critical
Publication of EP1039255B1 publication Critical patent/EP1039255B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28BSTEAM OR VAPOUR CONDENSERS
    • F28B1/00Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/02Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium

Definitions

  • the invention relates to a steam power plant according to the preamble of claim 1.
  • Such a steam power plant is known from DE 196 42 100 A1 US-A-4 866 941, US-A-3 973 404 and WO 98/15720.
  • the condenser is there Arranged and located laterally next to the turbine on the turbine foundation thus obviously within the nacelle not shown there.
  • the order of the capacitor inside the machine house leads to widening of the nacelle by several meters, which leads to a corresponding enlargement the span and the installation height of the nacelle crane. For cost reasons the widening is carried out as little as possible, so that an optimization the construction of the condenser neck to contribute to an improvement in efficiency of the power plant is restricted.
  • the task is to specify a steam power plant of the type mentioned at the beginning, which leads to a machine house that is reduced in height and width, and yet brings no restriction in the design of the condenser neck.
  • the condenser with its inlets and outlets for the main cooling water is in an extension of a nacelle arranged.
  • the length of the condenser neck can be freely due to its arrangement in one expandable extension freely chosen regardless of the nacelle height and width become.
  • Over the entire outflow cross-section of the condenser neck is an even inflow field ensured.
  • the arrangement ensures an optimal definition of the diffuser angle ⁇ , which influences the flow behavior in the condenser neck. In such a way optimally designed condenser neck, the steam flow is low loss to a lower speed delayed with simultaneous pressure recovery.
  • the Condenser neck a predeterminable gradient in the direction of the condenser, the Center line of the condenser is located below the turbine center line.
  • Figures 1 and 2 show a turbo group 1 of a steam power plant, not shown, supported on a foundation plate 2 insulated from the nacelle 3 is.
  • An extension 4 borders the machine house 3. From the machine house and extension only the supporting structure is shown, to take a look at the arrangement of those inside Components.
  • the cultivation can depend on the climatic conditions as a complete enclosure, only with a roof or in open-air construction be trained.
  • the machine house is in the longitudinal direction 3 aligned the turbo group 1 and fixed relative to the nacelle.
  • An exhaust steam flow leaving the low-pressure part of the turbine 10 via an outlet housing 5 passes through a condenser neck 6 acting as a diffuser to an im Attachment 4 arranged condenser 7.
  • An inlet and outlet 8, 9 for the main cooling water is connected to pipes, not shown.
  • the condenser neck bridges the distance between the condenser 7 and the outlet housing 5 and penetrates the wall 11 between the extension 4 and the nacelle 3. How 2, the condenser neck 6 points in the direction Condenser 7 acting gradient, which is so large that a condensate return to the turbine is safely avoided.
  • the center line 13 of the capacitor 7 is located below the turbine centerline 12 to e.g. B. a reflux of the condensate to ensure the low pressure turbines. Due to the lateral arrangement of the Capacitor 7 results in a low construction of the turbo group and thus also a correspondingly lower engine house. It is also an optimal one Definition of the diffuser angle ⁇ , which is the flow behavior in the condenser neck influenced, guaranteed. To improve the efficiency of the steam power plant can be the length of the condenser neck for optimal design of the condenser diffuser can be easily changed.

Description

Die Erfindung betrifft ein Dampfkraftwerk nach dem Oberbegriff des Anspruchs 1.The invention relates to a steam power plant according to the preamble of claim 1.

Ein derartiges Dampfkraftwerk ist aus DE 196 42 100 A1 US-A-4 866 941, US-A-3 973 404 sowie WO 98/15720 bekannt. Dort ist der Kondensator seitlich neben der Turbine auf dem Turbinenfundament angeordnet und befindet sich somit offenbar innerhalb des dort nicht dargestellten Maschinenhauses. Die Anordnung des Kondensators innerhalb des Maschinenhauses führt zu einer Verbreiterung des Maschinenhauses um mehrere Meter, was zu einer entsprechenden Vergrößerung der Spannweite und der Einbauhöhe des Maschinenhauskranes führt. Aus Kostengründen wird die Verbreiterung so gering wie möglich ausgeführt, sodaß eine Optimierung der Konstruktion des Kondensatorhalses zum Beitrag einer Wirkungsgradverbesserung des Kraftwerkes eingeschränkt ist. Bei Anordnung von Turbine und Kondensator auf gleichem Fundament, ist ein Rückfluß des Kondensats zu Niederdruckturbinen nicht gesichert und eine größere Förderhöhe der Hauptkühlwasserpumpen zu erwarten. Ferner kann der Kondensatspeicher des Kondensators nur durch eine Sonderkonstruktion zum Zwecke der Entwässerung der im Vakuumzustand befindlichen Komponenten direkt eingesetzt werden. Nach der DE 196 42 100A1 ist die Mittellinie des Kondensators oberhalb der Turbinenmittellinie angeordnet. Dabei entsteht durch die Abdampfumlenkung ein ungünstiges Strömungsverhalten und ein höherer Druckverlust. Eine zusätzliche Entwässerungseinrichtung des Niederdruckturbinengehäuses ist erforderlich, was mit einer Vergrößerung der Bauhöhe des Oberteils des Niederdruckturbinengehäuses und damit einer entsprechenden Erhöhung des Maschinenhauses einhergeht.Such a steam power plant is known from DE 196 42 100 A1 US-A-4 866 941, US-A-3 973 404 and WO 98/15720. The condenser is there Arranged and located laterally next to the turbine on the turbine foundation thus obviously within the nacelle not shown there. The order of the capacitor inside the machine house leads to widening of the nacelle by several meters, which leads to a corresponding enlargement the span and the installation height of the nacelle crane. For cost reasons the widening is carried out as little as possible, so that an optimization the construction of the condenser neck to contribute to an improvement in efficiency of the power plant is restricted. With arrangement of turbine and Condenser on the same foundation is a return flow of the condensate to low pressure turbines not secured and a higher head of the main cooling water pumps expected. Furthermore, the condensate storage of the capacitor can only be done by one Special construction for the purpose of dewatering the ones in vacuum Components can be used directly. According to DE 196 42 100A1 is the center line of the capacitor arranged above the turbine center line. This creates an unfavorable flow behavior and a higher flow deflection Pressure loss. An additional drainage device for the low-pressure turbine housing is required, which with an increase in the height of the upper part of the Low pressure turbine housing and thus a corresponding increase in the nacelle accompanied.

Es stellt sich die Aufgabe ein Dampfkraftwerk der eingangs genannten Art anzugeben, das zu einem in seiner Höhe und Breite reduzierten Maschinenhaus führt und trotzdem keine Beschränkung in der Ausgestaltung des Kondensatorhalses bringt.The task is to specify a steam power plant of the type mentioned at the beginning, which leads to a machine house that is reduced in height and width, and yet brings no restriction in the design of the condenser neck.

Gelöst wird diese Aufgabe erfindungsgemäß durch die im Anspruch 1 angegebenen Merkmale.This object is achieved according to the invention by those specified in claim 1 Characteristics.

Danach ist der Kondensator mit seinen Ein- und Auslassen für das Hauptkühlwasser in einem Anbau eines Maschinenhauses angeordnet.Then the condenser with its inlets and outlets for the main cooling water is in an extension of a nacelle arranged.

Mit dieser Anordnung gelingt eine Reduzierung des Bauvolumens des Maschinenhauses. Die Länge des Kondensatorhalses kann auf Grund seiner Anordnung in einem frei ausdehnbaren Anbau unabhängig von der Maschinenhaushöhe und -breite frei gewählt werden. Damit ist eine optimale Auslegung des Kondensatordiffusors zur Verbesserung des Wirkungsgrades des Dampfkraftwerkes gewährleistet. Über dem gesamten Ausströmungsquerschnitt des Kondensatorhalses ist ein gleichmäßiges Zuströmungsfeld sichergestellt. Die Anordnung gewährleistet eine optimale Festlegung des Diffusorwinkels λ, der das Strömungsverhalten im Kondensatorhals beeinflußt. In einem derart optimal ausgelegten Kondensatorhals wird die Dampfströmung verlustarm auf eine niedrigere Geschwindigkeit mit gleichzeitigem Druckrückgewinn verzögert. With this arrangement, the construction volume of the machine house can be reduced. The length of the condenser neck can be freely due to its arrangement in one expandable extension freely chosen regardless of the nacelle height and width become. This is an optimal design of the condenser diffuser for improvement guaranteed the efficiency of the steam power plant. Over the entire outflow cross-section of the condenser neck is an even inflow field ensured. The arrangement ensures an optimal definition of the diffuser angle λ, which influences the flow behavior in the condenser neck. In such a way optimally designed condenser neck, the steam flow is low loss to a lower speed delayed with simultaneous pressure recovery.

Um einen Kondensatrücklauf vom Kondensator zur Turbine zu verhindern und ein ungünstiges Strömungsverhalten durch die Abdampfumlenkung zu vermeiden, weist der Kondensatorhals ein vorgebbares Gefälle in Richtung Kondensator auf, wobei sich die Mittellinie des Kondensators unterhalb der Turbinenmittellinie befindet.To prevent a condensate return from the condenser to the turbine and an unfavorable one To avoid flow behavior by the exhaust steam deflection, the Condenser neck a predeterminable gradient in the direction of the condenser, the Center line of the condenser is located below the turbine center line.

Anhand eines Ausführungsbeispieles und der schematischen Figuren 1 und 2 wird die erfindungsgemäße Anordnung beschrieben.Using an exemplary embodiment and the schematic figures 1 and 2, the Arrangement according to the invention described.

Dabei zeigt die

Fig.1
eine Ansicht von oben auf die wichtigsten Komponenten eines in einem Maschinenhaus und einem Anbau angeordneten Dampfkraftwerkes und
Fig.2
eine Ansicht in Pfeilrichtung II der Fig. 1 mit einem Querschnitt im Bereich des Kondensators.
The shows
Fig.1
a view from above of the most important components of a steam power plant arranged in a machine house and an extension and
Fig.2
a view in the direction of arrow II of FIG. 1 with a cross section in the region of the capacitor.

Die Figuren 1 und 2 zeigen eine Turbogruppe 1 eines nicht weiter dargestellten Dampfkraftwerkes, die auf einer vom Maschinenhaus 3 isolierten Fundamentplatte 2 abgestützt ist. Ein Anbau 4 grenzt an das Maschinenhaus 3. Von Maschinenhaus und Anbau ist nur die Tragstruktur dargestellt, um den Blick auf die Anordnung der darin befindlichen Komponenten zu ermöglichen. Der Anbau kann je nach Klimabedingungen als vollständige Einhausung, nur mit einem Dach versehen oder in Freiluftbauweise ausgebildet sein.Figures 1 and 2 show a turbo group 1 of a steam power plant, not shown, supported on a foundation plate 2 insulated from the nacelle 3 is. An extension 4 borders the machine house 3. From the machine house and extension only the supporting structure is shown, to take a look at the arrangement of those inside Components. The cultivation can depend on the climatic conditions as a complete enclosure, only with a roof or in open-air construction be trained.

Wie insbesondere aus der Fig 1 ersichtlich ist, ist in Längserstreckung des Maschinenhauses 3 die Turbogruppe 1 ausgerichtet und relativ zum Maschinenhaus festgelegt. Ein den Niederdruckteil der Turbine 10 über ein Auslaßgehäuse 5 verlassender Abdampfstrom gelangt über einen als Diffusor wirkenden Kondensatorhals 6 zu einem im Anbau 4 angeordneten Kondensator 7. Ein Ein-und Auslaß 8, 9 für das Hauptkühlwasser ist mit nicht dargestellten Rohrleitungen verbunden. Der Kondensatorhals überbrückt den Abstand zwischen dem Kondensator 7 und dem Auslassgehäuse 5 und durchdringt dabei die Wand 11 zwischen dem Anbau 4 und dem Maschinenhaus 3. Wie insbesondere aus der Fig 2 ersichtlich, weist der Kondensatorhals 6 ein in Richtung Kondensator 7 wirkendes Gefälle auf, das so groß bemessen ist, daß ein Kondensatrücklauf zur Turbine sicher vermieden wird. Die Mittellinie 13 des Kondensators 7 befindet sich unterhalb der Turbinenmittellinie 12, um z. B. einen Rückfluß des Kondensats zu den Niederdruckturbinen sicherzustellen. Durch die seitliche Anordnung des Kondensators 7 ergibt sich eine niedrige Bauweise der Turbogruppe und somit auch ein entsprechend niedriger ausgeführtes Maschinenhaus. Ferner ist eine optimale Festlegung des Diffusorwinkels λ, der das Strömungsverhalten im Kondensatorhals beinflußt, gewährleistet. Zur Verbesserung des Wirkungsgrades des Dampfkraftwerkes kann die Länge des Kondensatorhalses zur optimalen Auslegung des Kondensatordiffusors problemlos verändert werden.As can be seen in particular from FIG. 1, the machine house is in the longitudinal direction 3 aligned the turbo group 1 and fixed relative to the nacelle. An exhaust steam flow leaving the low-pressure part of the turbine 10 via an outlet housing 5 passes through a condenser neck 6 acting as a diffuser to an im Attachment 4 arranged condenser 7. An inlet and outlet 8, 9 for the main cooling water is connected to pipes, not shown. The condenser neck bridges the distance between the condenser 7 and the outlet housing 5 and penetrates the wall 11 between the extension 4 and the nacelle 3. How 2, the condenser neck 6 points in the direction Condenser 7 acting gradient, which is so large that a condensate return to the turbine is safely avoided. The center line 13 of the capacitor 7 is located below the turbine centerline 12 to e.g. B. a reflux of the condensate to ensure the low pressure turbines. Due to the lateral arrangement of the Capacitor 7 results in a low construction of the turbo group and thus also a correspondingly lower engine house. It is also an optimal one Definition of the diffuser angle λ, which is the flow behavior in the condenser neck influenced, guaranteed. To improve the efficiency of the steam power plant can be the length of the condenser neck for optimal design of the condenser diffuser can be easily changed.

Claims (2)

  1. Steam generating station, comprising a turbine group (1), a condenser (7) connected to the turbine group via a condenser neck (6) and disposed laterally with respect to the turbine group, and comprising main cooling-water lines leading away from and to the condenser, characterized in that the condenser (7) with its inlets and outlets (8, 9) for the main cooling water is disposed in an extension (4) of a machinery house (3).
  2. Steam generating station according to Claim 1, characterized in that the bisecting line (13) of the condenser (7) is located underneath the turbine bisecting line (12) and in that the condenser neck (6) has a predeterminable gradient in the direction of the condenser (7).
EP00105239A 1999-03-19 2000-03-13 Steam power plant Expired - Lifetime EP1039255B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19912415 1999-03-19
DE19912415 1999-03-19
DE10005727A DE10005727A1 (en) 1999-03-19 2000-02-09 Steam power plant
DE10005727 2000-02-09

Publications (2)

Publication Number Publication Date
EP1039255A1 EP1039255A1 (en) 2000-09-27
EP1039255B1 true EP1039255B1 (en) 2003-08-27

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EP00105239A Expired - Lifetime EP1039255B1 (en) 1999-03-19 2000-03-13 Steam power plant

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US (1) US6230493B1 (en)
EP (1) EP1039255B1 (en)
JP (1) JP2000320307A (en)
CN (1) CN1211567C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT1004751E (en) * 1998-11-25 2003-07-31 Alstom Power Generation Ag THERMAL CENTER INSTALLED OUTDOOR

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549641B2 (en) * 1974-01-23 1979-04-26
US3939356A (en) * 1974-07-24 1976-02-17 General Public Utilities Corporation Hydro-air storage electrical generation system
US3953971A (en) * 1975-01-02 1976-05-04 Parker Sidney A Power generation arrangement
US4038821A (en) * 1976-02-12 1977-08-02 Black Jerimiah B Fluid current motor
US4464080A (en) * 1979-08-09 1984-08-07 Gorlov Alexander M High volume tidal or current flow harnessing system
JPS63282693A (en) * 1987-05-06 1988-11-18 Toshiba Corp Building for turbine
US4866941A (en) * 1988-07-05 1989-09-19 Westinghouse Electric Corp. Single condenser arrangement for side exhaust turbine
JP3138310B2 (en) * 1992-01-17 2001-02-26 株式会社日立製作所 Power plant and construction method of power plant
DE19640100B4 (en) 1996-09-28 2005-07-14 Sauer-Danfoss Holding Aps Hydraulic system
WO1998015720A1 (en) * 1996-10-08 1998-04-16 Siemens Aktiengesellschaft Steam turbine system
DE19642100B4 (en) 1996-10-12 2011-09-29 Alstom steam condenser

Also Published As

Publication number Publication date
US6230493B1 (en) 2001-05-15
CN1211567C (en) 2005-07-20
EP1039255A1 (en) 2000-09-27
JP2000320307A (en) 2000-11-21
CN1273355A (en) 2000-11-15

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