EP2481885A1 - Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage - Google Patents

Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage Download PDF

Info

Publication number
EP2481885A1
EP2481885A1 EP11152916A EP11152916A EP2481885A1 EP 2481885 A1 EP2481885 A1 EP 2481885A1 EP 11152916 A EP11152916 A EP 11152916A EP 11152916 A EP11152916 A EP 11152916A EP 2481885 A1 EP2481885 A1 EP 2481885A1
Authority
EP
European Patent Office
Prior art keywords
steam
vane
row
vanes
injected
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.)
Withdrawn
Application number
EP11152916A
Other languages
German (de)
English (en)
Inventor
Tilman Auf Dem Kampe
Ulrich Beul
Boris Dobrzynski
Ralf Hoffacker
Mario Koebe
Dieter Minninger
Uwe Sieber
Andreas Stiehm
Stefan Völker
Adam Zimmermann
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to EP11152916A priority Critical patent/EP2481885A1/fr
Publication of EP2481885A1 publication Critical patent/EP2481885A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • F01D5/145—Means for influencing boundary layers or secondary circulations
    • 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
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/148—Blades with variable camber, e.g. by ejection of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/12—Fluid guiding means, e.g. vanes

Definitions

  • the invention relates to a guide vane row for a steam turbine according to the preamble of claim 1, as well as a method for fine adjustment of the absorption capacity of such a guide vane row.
  • Vanes rows have a plurality of vanes, which are arranged distributed uniformly over the circumference, wherein between the vanes blade channels are formed. Radially, the blade channels are limited on the hub side by a hub contour ring and on the housing side by a housing contour ring.
  • the absorption capacity of the steam turbine is largely determined by the absorption capacity of the first guide vane row, so that in the design of the steam turbine this vane row is of particular importance.
  • the absorption capacity of this first row of guide vanes which is also referred to as the vane ring, is determined essentially by its flow cross section, which comprises the entirety of all effective cross sections of the vane ducts.
  • the vane rows, and in particular the vane ring at nuclear power plants, are subject in their manufacture building tolerances of about conventional ⁇ 2%.
  • the flow cross-section and thus the actual swallowing capacity deviate from the size originally used in the design of the steam turbine.
  • the steam steam turbine main steam valve must be throttled at a constant turbine speed and constant live steam pressure in order to maintain the live steam pressure in front of the steam turbine. The throttling then leads to an additional loss of vapor pressure via the main steam valve. If the steam turbine used in a nuclear power plant, for example, it may lead to a drop in generator power of up to 5 megawatts.
  • the vanes of the steam turbine are usually designed to be about 2% too large.
  • the invention has for its object to provide a guide vane row for a steam turbine and a method for fine adjustment of the absorption capacity of such a guide vane row, with which the aforementioned disadvantages are overcome.
  • Such an adjustment or fine adjustment is preferably carried out once when commissioning the steam turbine by the actual and desired value of the ability to swallow the vane row is compared and the pressure of the injected steam is controlled so that the actual value within an allowable tolerance band of Target value comes to rest.
  • the regulation of the ability to swallow can also be repeated as required, for example during the later operation of the steam turbine during a load change.
  • the ability to swallow can also be reduced and increased dynamically during operation, thus adapting to current operating conditions.
  • the fact that the pressure which is present in the interior of the at least one guide vane makes it possible to adjust the absorption capacity of the steam turbine variably and quickly adapted to current operating conditions.
  • the steam is injected into the blade channels via the blade sides of the guide blades in such a way that a virtually uniform boundary layer is formed on the surfaces of the blade sides.
  • At least one of the bushings is arranged so that a correspondingly changed flow profile between the guide vanes is achieved.
  • a more homogeneous boundary layer can be achieved if several vapor passages are arranged next to one another distributed over the height of the guide blade and / or over the profile circumference.
  • the guide vane ring is designed according to the invention as the first row of guide vanes of the steam turbine, since it determines the absorption capacity of the steam turbine, especially in the case of nuclear power plants. Further injections from at least one of the guide vanes of a plurality, for example, the guide vane ring subsequent, rows of guide blades improve the inventive method on.
  • the method according to the invention can be realized in a particularly simple manner if the injected steam is tapped off upstream of the respective row of guide blades to be matched, in particular in front of a main steam valve for the first row of vanes, since there is always steam at a higher pressure level than the row of guide vanes itself to be adapted.
  • such flow channels K are determined by a plurality of blade channels, which form through free spaces between the guide vanes L arranged adjacent to one another in the circumferential direction of a row of guide blades.
  • the cross section across all blade channels then forms the flow cross section which is effectively available for a process steam mass flow P as the process medium.
  • a steam D injected under pressure from the guide blade L into a blade channel K obstructs this process steam mass flow P and thus acts more or less like a narrowing of the flow cross-section which is effectively available to it, which leads to a reduction in the absorption capacity of the steam turbine.
  • FIGS. 2 to 4 Various exemplary embodiments of guide vanes L designed according to the invention are shown in FIGS. 2 to 4 shown schematically.
  • two sections through vanes FIGS. 2 and 3
  • a plan view of the profile of a vane FIG. 4
  • passages B any type of openings in the guide vane wall are possible, which allow vapor D from the interior of the guide vanes out to the surface of the vane.
  • This can be simple holes, or even elongated recesses as in FIG. 4 shown in plan view.
  • a vane L has at least one single passage B, which is arranged, for example, in the region of the front edge of the suction side of the vane.
  • the passage can be made elongated over the height of the vane L as a single passage, or as in plan view in FIG FIG. 4 shown consist of several over the height of the vane in a row lying individual bushings B.
  • a plurality of distributed over the profile of the guide blade L rows with bushings B are provided, wherein also here the rows are preferably arranged in the region of the front edge of the suction side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Control Of Turbines (AREA)
EP11152916A 2011-02-01 2011-02-01 Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage Withdrawn EP2481885A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11152916A EP2481885A1 (fr) 2011-02-01 2011-02-01 Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11152916A EP2481885A1 (fr) 2011-02-01 2011-02-01 Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage

Publications (1)

Publication Number Publication Date
EP2481885A1 true EP2481885A1 (fr) 2012-08-01

Family

ID=44146239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11152916A Withdrawn EP2481885A1 (fr) 2011-02-01 2011-02-01 Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage

Country Status (1)

Country Link
EP (1) EP2481885A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3098393A1 (fr) * 2015-05-11 2016-11-30 General Electric Company Système et procédé de contrôle de flux dans la turbine
US9617874B2 (en) 2013-06-17 2017-04-11 General Electric Technology Gmbh Steam power plant turbine and control method for operating at low load
US20210301684A1 (en) * 2020-03-30 2021-09-30 General Electric Company Fluidic flow control device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976186C (de) * 1952-01-01 1963-04-18 Snecma Turbomaschine, insbesondere Gasturbine
FR1519899A (fr) * 1967-02-24 1968-04-05 Creusot Forges Ateliers Perfectionnements aux aubages distributeurs des parties basse pression d'une turbine à vapeur
US20070274824A1 (en) * 2006-05-23 2007-11-29 General Electric Company Airfoil and method for moisture removal and steam injection
WO2008065447A1 (fr) * 2006-12-01 2008-06-05 Parsons Brinckerhoff Limited Dispositif de régulation d'écoulement
EP2072756A2 (fr) * 2007-12-19 2009-06-24 United Technologies Corporation Systèmes et procédés incorporant des aubes de section au col variable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976186C (de) * 1952-01-01 1963-04-18 Snecma Turbomaschine, insbesondere Gasturbine
FR1519899A (fr) * 1967-02-24 1968-04-05 Creusot Forges Ateliers Perfectionnements aux aubages distributeurs des parties basse pression d'une turbine à vapeur
US20070274824A1 (en) * 2006-05-23 2007-11-29 General Electric Company Airfoil and method for moisture removal and steam injection
WO2008065447A1 (fr) * 2006-12-01 2008-06-05 Parsons Brinckerhoff Limited Dispositif de régulation d'écoulement
EP2072756A2 (fr) * 2007-12-19 2009-06-24 United Technologies Corporation Systèmes et procédés incorporant des aubes de section au col variable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9617874B2 (en) 2013-06-17 2017-04-11 General Electric Technology Gmbh Steam power plant turbine and control method for operating at low load
EP3098393A1 (fr) * 2015-05-11 2016-11-30 General Electric Company Système et procédé de contrôle de flux dans la turbine
US9957900B2 (en) 2015-05-11 2018-05-01 General Electric Company System and method for flow control in turbine
EP3098393B1 (fr) * 2015-05-11 2020-12-23 General Electric Company Système et procédé de contrôle de flux dans la turbine
US20210301684A1 (en) * 2020-03-30 2021-09-30 General Electric Company Fluidic flow control device
WO2021197977A1 (fr) * 2020-03-30 2021-10-07 General Electric Company Dispositif de régulation fluidique de flux dans une turbine à vapeur

Similar Documents

Publication Publication Date Title
EP1113145B1 (fr) Aube pour turbine a gaz avec section de mesure sur le bord de fuite
DE10127451A1 (de) Verfahren zur Steuerung einer Windenergieanlage
EP3097623B1 (fr) Régulateur de puissance avec précommande pour parc èolien
DE4214775A1 (de) Dampfturbine mit einem Drehschieber
EP3280021B1 (fr) Procédé de réglage de la distribution de puissance réactive d'un parc éolien et parc éolien correspondant
DE1551261B2 (de) Vorrichtung zur Regelung einer Heiz-Dampfkraftanlage
EP2606206B1 (fr) Procédé pour réguler une augmentation de puissance à court terme d'une turbine à vapeur
WO2013029914A1 (fr) Conduit de dérivation de vapeur
DE102009012322A1 (de) Durchlaufverdampfer
EP2481885A1 (fr) Ensemble d'aubes directrices et procédé d'ajustement précis de la capacité de débit massique d'une telle aubage
CH705822B1 (de) Axialverdichter für eine Strömungsmaschine, insbesondere eine Gasturbine.
EP2606205A2 (fr) Turbine à vapeur dotée d'un surchauffeur
EP1784558A1 (fr) Turbine à vapeur
DE102014115963A1 (de) Rotor-Kühlung
DE102010040623A1 (de) Verfahren zur Regelung einer kurzfristigen Leistungserhöhung einer Dampfturbine
DE102006013139A1 (de) Dampfturbinenrotoren
EP1512905A1 (fr) Générateur de vapeur à passage unique et méthode pour faire fonctionner ledit générateur de vapeur à passage unique
CH435318A (de) Einrichtung zur Regelung des Mediumstromes von mehreren Quellen verschiedenen Druckes zu einer Turbine
DE19961565A1 (de) Verfahren zur Einstellung des Durchflussvolumens eines Kühlmediums durch eine Turbinenkomponente
EP2638250B1 (fr) Anneau statorique aubagé pour une turbine à vapeur doté d'un dispositif d'ajustement précis de la capacité de débit et procédé associé
EP3658753B1 (fr) Réglage de turbine à vapeur
DE4344070C2 (de) Dampfturbine mit einer Einrichtung zur Auskopplung eines Teiles des Dampfmassenstromes
DE102022102237B3 (de) Pelton Turbine und Betriebsverfahren
DE102016205647B4 (de) Ringgatter für eine hydraulische Maschine und Verfahren zum Schließen
EP2975223A1 (fr) Couronne directrice réglable, procédé de fabrication et turbine à vapeur

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20130202