EP2852743A1 - Turbomachine dotée d'un rotor et d'un carter - Google Patents

Turbomachine dotée d'un rotor et d'un carter

Info

Publication number
EP2852743A1
EP2852743A1 EP13745011.0A EP13745011A EP2852743A1 EP 2852743 A1 EP2852743 A1 EP 2852743A1 EP 13745011 A EP13745011 A EP 13745011A EP 2852743 A1 EP2852743 A1 EP 2852743A1
Authority
EP
European Patent Office
Prior art keywords
bearing
rotor
housing
last
stage
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Withdrawn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
EP13745011.0A
Other languages
German (de)
English (en)
Inventor
Marcel Seiler
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 EP13745011.0A priority Critical patent/EP2852743A1/fr
Publication of EP2852743A1 publication Critical patent/EP2852743A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • 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
    • 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
    • F01D5/02—Blade-carrying members, e.g. rotors
    • 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
    • F01D9/00—Stators
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
    • 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
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/06—Arrangements of bearings; Lubricating
    • 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
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/32—Application in turbines in gas turbines
    • F05D2220/321—Application in turbines in gas turbines for a special turbine stage
    • F05D2220/3215—Application in turbines in gas turbines for a special turbine stage the last stage of the turbine

Definitions

  • Turbomachine comprising a rotor and a housing
  • the invention relates to a turbomachine, in particular a steam turbine comprising a rotor which is rotatably mounted and comprises moving blades, a housing which is arranged around the rotor, wherein the housing comprises guide vanes, a first bearing and a second bearing for supporting the rotor.
  • flow machines In the municipal energy supply, among other things flow machines are used, which have a comparatively large length.
  • An example of such a flow machine is a steam turbine, which essentially has one
  • Rotor and having a housing disposed around the rotor The rotor is here a component that can be several meters long and have a weight of several tons.
  • the rotors are rotatably mounted on two bearings, which in operation comparatively high rotational speeds such as 50 Hz or 60 Hz or more may occur.
  • Such high rotational frequencies coupled with the weight and length of the rotors, require precise manufacture for safe operation.
  • the maximum length of such a rotor executed is limited by the fact that the rigidity of the turbine branch is limited and can not be extended in connection with the rotor dynamic properties. Furthermore, the maximum length of the rotor depends strongly on the position of the bearings and the support of the bearing housing.
  • the object of the invention is to provide a rotor-dynamically improved turbomachine. This problem is solved by a turbomachine according to claim 1.
  • the stiffness-optimal bearing positions lie with a uniformly loaded shaft at the so-called Bessel points. These bessel points are calculated to be about 22% of the wavelength away from the shaft ends.
  • the invention therefore proposes to displace at least one bearing in such a way that the rotor dynamic properties are fundamentally improved.
  • the bearing be arranged upstream of a stator blade stage in the flow direction. It is thus proposed that the bearing is not a separate component on
  • Rotor end is arranged, but rather in the blade - path of the turbomachine is integrated. It is initially proposed to arrange the bearing in front of a blade stage.
  • the invention offers the advantage that the bearing housing can now be carried by a vane stage without additional bearing supports.
  • the second bearing before a last blade stage. This means that the bearing is arranged in the flow channel in such a way that the bearing is arranged before the last blade stage.
  • the bearing housing is arranged on bearing supports configured as guide vanes.
  • the bearing supports fulfill a thermody- namic function, namely the thermodynamic function of a guide vane.
  • the bearing supports are designed to be a fluid mechanical follow profile, which is predetermined by a vane stage.
  • the bearing displaced into the flow path can also fulfill thermodynamic properties, since the bearing supports are also designed as guide vanes.
  • a diffuser is arranged after the last blade stage.
  • the diffuser now advantageously no longer has a disturbing bearing support in the flow path and can thus carry out the pressure recovery in a more targeted manner.
  • the bearing support formed as a guide vane is designed such that it has a device for exchanging energy and signals.
  • the invention provides the advantage that a bearing integrated in the vane stage now requires less axial space and allows a smaller distance to the condenser. Since the bearing is carried by the vane stage, no bearing supports are required, which lead to material and manufacturing costs and impede the outflow to the condenser. In addition, the rigidity of the sub-turbine train is significantly increased, resulting in a significantly improved rotor dynamics. This may allow for a reduction in radial clearance to further improve efficiency.
  • the invention offers the advantage that larger outflow cross sections are realized and longer blade paths are used.
  • FIG. 1 a cross-sectional view of a steam turbine.
  • the figure shows an embodiment of a turbomachine designed as a steam turbine 1.
  • This steam turbine 1 essentially comprises a rotor 3 rotatably mounted about an axis of rotation 2, on which a first rotor blade stage 5, a second rotor blade stage 6 and a third rotor blade stage 7 are arranged on the rotor surface 4.
  • the steam turbine 1 further includes a housing not shown in detail, which is arranged around the rotatably mounted rotor 3. On the housing, a first vane stage 8, a second vane stage 9 and a third vane stage 10 are arranged.
  • the rotor 3 is mounted on a foundation 12 via a first bearing 13 and a second bearing 14.
  • the first bearing 13 is arranged at a first end 15 of the rotor 3.
  • the second bearing 14 is arranged at a second end 16.
  • the second bearing 14 is arranged in the flow path 11 in front of the third blade stage 7, that is to say the last rotor blade stage.
  • the bearing comprises a bearing housing 17, which is arranged around the second bearing 14.
  • To the bearing housing designed as a guide vane bearing support 19 is arranged. Since the bearing support 19 designed as a guide vane is arranged in the flow path 11, this bearing support 19 embodied as a guide vane participates in the energy conversion of the vapor present in the flow path 11.
  • a diffuser 20 is arranged, in which a pressure recovery of the vapor located in the flow path 11 takes place.
  • the bearing support 19 formed as a guide vane with the second bearing 14 also before the second blade stage 6 or even further forward in the flow path 11 are arranged.
  • devices 21 are provided for the exchange of energy and signals.
  • the rotor (3) seen in the flow direction on a first, second, penultimate and last blade row.
  • the housing has seen in the flow direction on a first, second, penultimate and last row of vanes.
  • the second bearing is arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une turbine à vapeur (1) dotée d'un rotor (3) et d'un carter, le palier (14) étant destiné à soutenir le rotor (3) en amont du dernier étage d'aubes mobiles.
EP13745011.0A 2012-08-21 2013-07-24 Turbomachine dotée d'un rotor et d'un carter Withdrawn EP2852743A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13745011.0A EP2852743A1 (fr) 2012-08-21 2013-07-24 Turbomachine dotée d'un rotor et d'un carter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12181150.9A EP2700798A1 (fr) 2012-08-21 2012-08-21 Turbomachine comprenant un rotor et un boîtier
EP13745011.0A EP2852743A1 (fr) 2012-08-21 2013-07-24 Turbomachine dotée d'un rotor et d'un carter
PCT/EP2013/065585 WO2014029580A1 (fr) 2012-08-21 2013-07-24 Turbomachine dotée d'un rotor et d'un carter

Publications (1)

Publication Number Publication Date
EP2852743A1 true EP2852743A1 (fr) 2015-04-01

Family

ID=46967941

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12181150.9A Withdrawn EP2700798A1 (fr) 2012-08-21 2012-08-21 Turbomachine comprenant un rotor et un boîtier
EP13745011.0A Withdrawn EP2852743A1 (fr) 2012-08-21 2013-07-24 Turbomachine dotée d'un rotor et d'un carter

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12181150.9A Withdrawn EP2700798A1 (fr) 2012-08-21 2012-08-21 Turbomachine comprenant un rotor et un boîtier

Country Status (7)

Country Link
US (1) US20150211385A1 (fr)
EP (2) EP2700798A1 (fr)
JP (1) JP5956077B2 (fr)
KR (1) KR20150040929A (fr)
CN (1) CN104583563B (fr)
IN (1) IN2015DN00390A (fr)
WO (1) WO2014029580A1 (fr)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919888A (en) * 1957-04-17 1960-01-05 United Aircraft Corp Turbine bearing support
US3327473A (en) * 1966-01-11 1967-06-27 Gen Motors Corp Engine support structure
GB1605252A (en) * 1976-12-17 1986-06-04 Rolls Royce Gas turbine engines
DE59205187D1 (de) * 1992-10-05 1996-03-07 Asea Brown Boveri Leitschaufeleinhängung für axialdurchströmte Turbomaschine
US6030176A (en) * 1995-07-19 2000-02-29 Siemens Aktiengesellschaft Structural member for an exhaust-gas connection of a turbomachine, in particular a steam turbine, and set of at least two structural members
JP3772019B2 (ja) * 1998-04-21 2006-05-10 株式会社東芝 蒸気タービン
US7523615B2 (en) * 2005-03-30 2009-04-28 General Electric Company Telemetry system
US7513102B2 (en) * 2005-06-06 2009-04-07 General Electric Company Integrated counterrotating turbofan
US7632064B2 (en) * 2006-09-01 2009-12-15 United Technologies Corporation Variable geometry guide vane for a gas turbine engine
EP1930543A1 (fr) * 2006-12-04 2008-06-11 Siemens Aktiengesellschaft Turbine à admission partielle
EP1970530A1 (fr) * 2007-03-12 2008-09-17 Siemens Aktiengesellschaft Rotor d'une turbomachine thermique et turbomachine thermique
US8511986B2 (en) * 2007-12-10 2013-08-20 United Technologies Corporation Bearing mounting system in a low pressure turbine
US8616834B2 (en) * 2010-04-30 2013-12-31 General Electric Company Gas turbine engine airfoil integrated heat exchanger
US9222413B2 (en) * 2012-07-13 2015-12-29 United Technologies Corporation Mid-turbine frame with threaded spokes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2014029580A1 *

Also Published As

Publication number Publication date
CN104583563B (zh) 2016-09-28
EP2700798A1 (fr) 2014-02-26
IN2015DN00390A (fr) 2015-06-19
KR20150040929A (ko) 2015-04-15
JP2015526639A (ja) 2015-09-10
US20150211385A1 (en) 2015-07-30
WO2014029580A1 (fr) 2014-02-27
JP5956077B2 (ja) 2016-07-20
CN104583563A (zh) 2015-04-29

Similar Documents

Publication Publication Date Title
DE2436635C3 (de) Hydraulische Maschine
EP2140114A2 (fr) Palier axial notamment pour un turbocompresseur
EP3064706A1 (fr) Rangée d'aubes directrices pour une turbomachine traversée axialement
WO2008104465A2 (fr) Procédé de fonctionnement d'une turbine à vapeur à plusieurs étages
EP2041397B1 (fr) Réduction d'amplitude de vibrations flexurales d'un rotor
DE112007001870T5 (de) Dampfturbinen
EP3095957B1 (fr) Disque de rotor pour compresseur
EP2802748B1 (fr) Turbomachine avec refroidissement de vis
DE102017212311A1 (de) Umströmungsanordung zum Anordnen im Heißgaskanal einer Strömungsmaschine
DE102005032381A1 (de) Turbine für eine Wasserkraftanlage
EP3423703A1 (fr) Turbine hydraulique, notamment turbine axiale, et centrale hydroélectrique équipé de celle-ci
EP1746256A1 (fr) Diminution des pertes dues au jeu en bout d'aubes dans les turbomachines
EP3155226B1 (fr) Turbine à vapeur et procédé de fonctionnement d'une turbine à vapeur
EP3498972B1 (fr) Module de turbine pour une turbomachine
EP2831379A1 (fr) Bague de support
EP2877699B1 (fr) Turbine à basse pression
EP2852743A1 (fr) Turbomachine dotée d'un rotor et d'un carter
EP2598724B1 (fr) Turbine à vapeur et procédé pour refroidir une turbine à vapeur
EP3128134A1 (fr) Agencement pour une turbine a vapeur et procédé de fixation associé
WO2015090785A1 (fr) Fixation axiale d'un palier planétaire
EP2812540B1 (fr) Rotor pour une turbine à vapeur et turbine à vapeur correspondante
AT526277B1 (de) Schacht-Turbine mit Ringgenerator sowie Förder- und Drosselvorrichtungen
EP1644613A1 (fr) Turbine a vapeur
DE102012109168A1 (de) Asymmetrische Umlenkplatte für eine Dampfturbinenabdampfhaube
WO2018036710A1 (fr) Aube mobile, couronne d'aubes mobiles et turbine

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

17P Request for examination filed

Effective date: 20141222

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

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170321

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: 20170801