EP0983422B1 - Ensemble palier pour installation a turbine a vapeur - Google Patents

Ensemble palier pour installation a turbine a vapeur Download PDF

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Publication number
EP0983422B1
EP0983422B1 EP98933491A EP98933491A EP0983422B1 EP 0983422 B1 EP0983422 B1 EP 0983422B1 EP 98933491 A EP98933491 A EP 98933491A EP 98933491 A EP98933491 A EP 98933491A EP 0983422 B1 EP0983422 B1 EP 0983422B1
Authority
EP
European Patent Office
Prior art keywords
steam turbine
housing
steam
turbine
capacitor
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
EP98933491A
Other languages
German (de)
English (en)
Other versions
EP0983422A1 (fr
Inventor
Wolfgang Kupka
Helmut Kühn
Dietrich Hintze
Jürgen KRAFT
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
Publication of EP0983422A1 publication Critical patent/EP0983422A1/fr
Application granted granted Critical
Publication of EP0983422B1 publication Critical patent/EP0983422B1/fr
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
    • F01D25/28—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
    • F01D25/162—Bearing supports

Definitions

  • the invention relates to a steam turbine system a steam turbine, the turbine runner in a repository is stored.
  • a steam turbine is typically used in a power plant to drive a generator or in an industrial plant used to drive a work machine.
  • the Steam turbine supplied as a flow medium serving steam, who relaxes while working in the steam turbine.
  • To the steam usually comes in through its relaxation Steam turbine casing of the steam turbine in one of these Condenser and condenses there.
  • the evaporator housing can be flowed through axially or radially.
  • the condensate is then fed to a steam generator as feed water and after its evaporation it gets back into the Steam turbine, so that a closed water-steam cycle arises.
  • the turbine runner of such a steam turbine is usually in a number of axial and / or radial bearings stored.
  • One of these camps also known as a repository, is in the interior, for example in the inner hub, the Steam housing arranged and is used to fix the in the steam housing located shaft end of the turbine rotor.
  • the repository is usually designed as a radial bearing, thus as a bearing for absorbing radial forces.
  • a steam turbine is known from DE 196 15 011 A1 which is a bearing housing formed from bearing shells or halves of the turbine rotor's repository directly with the exhaust housing connected is.
  • the bearing housing of the End bearing via radially arranged support arms centrally in the exhaust steam housing supported.
  • the bearing housing of the repository is arranged within the area that the Operation of the steam turbine is traversed by steam.
  • the repository however, a steam turbine designed in this way is special sensitive to movement or tension the evaporator housing, for example as a result of load changes. In addition, such an interpretation is only a limited one Stiffness of the repository achievable.
  • the arrangement of the bearing housing of the repository within the steam flow still a lot of effort in sealing the oil space compared to the area through which steam flows.
  • a steam turbine is known from US Pat. No. 5,106,264 Turbine rotor is stored in a repository, which in a Carrier is held. The carrier is through the evaporator housing the steam turbine is carried out and is supported on a foundation block.
  • the invention has for its object a steam turbine system specify the type of steam turbine with particularly high rigidity of the repository, high stability with respect to movements of the evaporation housing.
  • a cellar-less should be possible with particularly little effort or ground-level installation of the capacitor.
  • the invention is based on the consideration that the repository for a high stability against the movements of the Evaporator housing should be mechanically decoupled from this.
  • a mechanical Connection of the repository to the foundation or base frame of the Steam turbine may be provided. This can be achieved by using a Carrier for the repository is provided, which in turn directly is supported on the foundation block.
  • the repository can be arranged in an inner hub of the exhaust steam housing.
  • a basement-less or ground-level installation of the capacitor is avoiding an unfavorable pressure drop by doing without a usually between the Steam turbine and the condenser switched overflow line allows.
  • the capacitor is directly on the turbine housing connected.
  • the connection of the turbine housing and capacitor should do so for absorbing frictional forces especially with different expansion behavior of the turbine housing and capacitor must be rigid.
  • thermal expansion of the steam turbine system leads to a shift of the capacitor relative to its foundation without that shifts in the vertical direction can occur.
  • Displacement of the capacitor in the horizontal direction is advantageously for storing the A multi-ball bearing capacitor is provided.
  • the evaporation housing is expediently supported on the foundation over a number of on the side of the exhaust housing arranged claws.
  • the claws should be on the side be arranged on the evaporator housing such that they are due their storage in a respective slide bearing torque of the exhaust steam casing caused the turbine rotor take up.
  • the turbine housing is through center guides at its front end and at its rear end in the middle of the wave supported.
  • the capacitor advantageously comprises a number of condenser elements, two of which are each on the exhaust housing are arranged opposite each other.
  • the advantages achieved with the invention are in particular in that directly by holding the repository the foundation has a particularly high rigidity of the repository can be reached with particularly simple means.
  • the repository is also mechanically decoupled from the exhaust housing and thus insensitive to movements of the evaporation casing.
  • By the holder of the repository can directly on the foundation furthermore the bearing housing within a shaft area and thus outside the area through which steam flows be arranged. The effort to seal the Repository opposite the area through which steam flows is particularly low.
  • the steam turbine 1 according to FIG. 1 comprises an exhaust steam housing 2, by the steam relaxed in the steam turbine 1 1 not shown, downstream of the steam turbine 1 Capacitor can be supplied.
  • the evaporator casing 2 is composed of a lower housing component 4 and an upper housing component 6 composed.
  • the lower housing component 4 and the upper housing component 6 are each in one piece and as Welded construction carried out.
  • the steam turbine 1 is in the Embodiment intended for use as an industrial turbine and for a mechanical output of about 6 to 8 MW designed. Alternatively, the steam turbine 1 can also Use as a power plant turbine with a comparatively higher mechanical Performance.
  • a radial bearing Repository 8 for the turbine runner 10 of the steam turbine 1 arranged.
  • the turbine runner 10 is also in one Number of others designed as radial and / or axial bearings Bearing 12 rotatably supported about its central axis 14.
  • This in an inner hub arranged end bearing 8 comprises bearing parts 16, 18, which together a bearing housing for the actual warehouse 20 of the repository 8 form. More details regarding the Design of the repository 8 and the associated sealing arrangement can also be seen in FIG 1; you will be for the sake of clarity, however, not discussed here.
  • the middle rib 28 is thereby in the manner of a shaft through the exhaust steam housing 2 guided, the interior 26 of the central rib 28 via openings 30 communicates with the surrounding atmosphere.
  • the end the bearing parts 16, 18 formed bearing housing of the repository 8 is within a trained as an inner hub, in Compared to the central rib 28 thickened shaft area 32 and thus outside the area through which steam flows arranged. The effort to seal the repository 8 compared to the area through which steam flows particularly low.
  • the lower housing component 4 and the upper housing component 6 are each designed as a half-shell and in a parting plane 34 assembled to form the evaporation housing 2.
  • the housing components are for assembly or inspection purposes 4, 6 each provided with suspensions 36.
  • At the bottom Housing component 4 of the evaporation housing 2 are also a Number of claws 38 arranged, each in no closer illustrated manner is mounted in a plain bearing.
  • the Claws 38 are arranged laterally on the evaporation housing 2, that due to their storage in the respective Plain bearings applied by the turbine runner 10 Record torques during the operation of the steam turbine 1.
  • the repository 8 is also mechanical from the evaporator housing 2 decoupled and thus insensitive to movements of the Evaporation housing 2 during the operation of the steam turbine 1.
  • the storage of the evaporator housing 2 in the plain bearings by means of the claw 38 also compensates for torques of the turbine rotor 10 safely.
  • the steam turbine is slide bearings for storing the claws 38 1 designed such that thermal movements transverse to the central axis 14 of the turbine rotor 10 due to thermal expansion, for example when changing loads, not causing damage on the steam turbine 1.
  • Claws 38 already largely pre-assemble the steam turbine 1 possible at the place of manufacture.
  • the lower housing component 4 of the evaporation housing 2 is arranged on a support frame 42, which in turn is on the ground-level foundation block 22 attached to a machine house, not shown is.
  • the steam turbine 1 is in a not shown Water-steam circuit of the steam turbine system 40 switched. In the water-steam cycle, the steam turbine 1 is a condenser 44 connected downstream, the two capacitor elements in the exemplary embodiment 46, 48 includes. Alternatively, it can also a different number of capacitor elements can be provided.
  • the capacitor elements 46, 48 of the capacitor 44 are each via a flange 50, 52 with the evaporator housing 2 Steam turbine 1 rigidly releasably connected. To make the there are rigid detachable connections on each flange 50, 52 a screw connection is provided.
  • the evaporation housing 2 is designed so that all for the outflow of the turbine exhaust flow provided in the upper housing component 6 are integrated. Independent of individual design of the steam turbine 1 is thus a standardized component can be used as the lower housing component 4.
  • the capacitor elements 46, 48 of the capacitor 44 For storing the capacitor elements 46, 48 of the capacitor 44 is a bearing block arranged on the foundation block 22 56 or 58 provided. On the respective warehouse block 56, 58 is the respective capacitor element 46 or 48 by means of a number of supports 60 and 62 in horizontal Slidably supported in the direction. The capacitor 44 is thus slidably mounted on the foundation block 22.
  • the bearing blocks 56, 58 are dimensioned in such a height that the supports 60, 62 approximately at the level of the central axis 14 of the Turbine rotor 10 of the steam turbine 1 are arranged. By this arrangement is an occurrence of vertical force components in the supports 60, 62 largely at thermal stresses avoided.
  • multi-ball bearings are used as supports 60, 62 intended.
  • the supports 60, 62 but also as elastomers or as pendulum supports be trained.
  • the capacitor elements 46, 48 are opposite one another arranged on the steam housing 2 of the steam turbine 1.
  • the at the horizontal displacement of the capacitor elements 46, 48 due to thermal expansion occurring on the exhaust housing 2 due to the frictional forces in the supports 60, 62 acting reaction forces compensate each other due to this symmetrical arrangement almost. A shift of the upper housing part due to thermal expansion is therefore safe avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Support Of The Bearing (AREA)

Claims (4)

  1. Installation (40) à turbine à vapeur, comportant une turbine (1) à vapeur dont le rotor (10) de turbine est monté dans un palier (8) d'extrémité qui est maintenu par un support (24) s'appuyant sur un bloc (22) de fondation et passant à travers le carter (2) de vapeur d'échappement de la turbine (1) à vapeur,
    caractérisée en ce que le carter (2) de vapeur d'échappement est assemblé rigidement de manière amovible à un condenseur (44), et le condenseur est monté sur une pluralité d'éléments (60, 62) d'appui qui sont disposés à hauteur de l'axe (14) médian du rotor (10) de turbine.
  2. Turbine (1) à vapeur suivant la revendication 1, dont le carter (2) de vapeur d'échappement comporte une pluralité de pattes (38) de fixation qui sont chacune montées dans un palier lisse.
  3. Installation (40) à turbine à vapeur suivant la revendication 1 ou 2, dans laquelle un roulement à billes multiples est prévu pour le montage du condenseur (44).
  4. Installation (40) à turbine à vapeur suivant l'une des revendications 1 à 3, dans laquelle le condenseur (44) comprend une pluralité d'éléments (46, 48) de condenseur, qui sont disposés deux par deux en vis-à-vis sur le carter (2) de vapeur d'échappement.
EP98933491A 1997-05-21 1998-05-08 Ensemble palier pour installation a turbine a vapeur Expired - Lifetime EP0983422B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19721317 1997-05-21
DE19721317 1997-05-21
PCT/DE1998/001297 WO1998053183A1 (fr) 1997-05-21 1998-05-08 Ensemble palier pour installation a turbine a vapeur

Publications (2)

Publication Number Publication Date
EP0983422A1 EP0983422A1 (fr) 2000-03-08
EP0983422B1 true EP0983422B1 (fr) 2002-10-02

Family

ID=7830117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98933491A Expired - Lifetime EP0983422B1 (fr) 1997-05-21 1998-05-08 Ensemble palier pour installation a turbine a vapeur

Country Status (6)

Country Link
US (1) US6231305B1 (fr)
EP (1) EP0983422B1 (fr)
JP (1) JP4162723B2 (fr)
CZ (1) CZ292470B6 (fr)
DE (1) DE59805811D1 (fr)
WO (1) WO1998053183A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846224A1 (de) * 1998-10-07 2000-04-20 Siemens Ag Dampfturbine mit einem Abdampfgehäuse
DE102006027237A1 (de) * 2005-06-14 2006-12-28 Alstom Technology Ltd. Dampfturbine
US20110000222A1 (en) * 2007-08-31 2011-01-06 General Electric Company Gas turbine rotor-stator support system
CN102265001B (zh) * 2008-12-22 2015-07-08 西门子公司 涡轮机支座单元
US20120195750A1 (en) * 2011-01-31 2012-08-02 General Electric Company Turbomachine supports having thermal control system
EP2977565A1 (fr) * 2014-07-21 2016-01-27 Siemens Aktiengesellschaft Agencement de turbomachine
DE102015213257A1 (de) * 2015-07-15 2017-01-19 Siemens Aktiengesellschaft Abdampfgehäuse für eine Turbine, Turbinengestell, Turbinengehäuse und Montagesystem
CN111608747B (zh) * 2020-04-07 2022-05-10 东方电气集团东方汽轮机有限公司 短跨距汽轮机转子支承结构及汽轮机转子支撑安装方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643078A (en) * 1946-05-07 1953-06-23 Parsons & Marine Eng Turbine Elastic fluid turbine support
FR1315513A (fr) * 1961-03-08 1963-01-18 Parsons & Marine Eng Turbine Boîtier de paliers pour organes rotatifs
DE2147444A1 (de) * 1971-09-23 1973-03-29 Kraftwerk Union Ag Dampfturbinenanlage
CH570549A5 (fr) * 1974-04-09 1975-12-15 Bbc Sulzer Turbomaschinen
SU1240923A1 (ru) * 1984-04-06 1986-06-30 Всесоюзный Дважды Ордена Трудового Красного Знамени Теплотехнический Научно-Исследовательский Институт Им.Ф.Э.Дзержинского Устройство дл установки корпуса турбомашины
SU1430560A1 (ru) * 1987-02-27 1988-10-15 Е.М.Семижонов Устройство креплени конденсатора паровой турбины при гидравлическом испытании
FR2646470B1 (fr) * 1989-04-26 1991-07-05 Alsthom Gec Systeme de supportage du rotor dans une turbine a echappement axial avec le palier cote echappement a raideur isotrope, directement flasque sur la fondation
FR2646469B1 (fr) * 1989-04-28 1991-07-05 Alsthom Gec Systeme de supportage du rotor dans une turbine a echappement axial avec le palier cote echappement integre a la fondation

Also Published As

Publication number Publication date
JP2001527620A (ja) 2001-12-25
WO1998053183A1 (fr) 1998-11-26
DE59805811D1 (de) 2002-11-07
CZ412899A3 (cs) 2000-05-17
CZ292470B6 (cs) 2003-09-17
EP0983422A1 (fr) 2000-03-08
US6231305B1 (en) 2001-05-15
JP4162723B2 (ja) 2008-10-08

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