EP0751283B1 - Abstützung einer Niederdruck-Dampfturbine - Google Patents

Abstützung einer Niederdruck-Dampfturbine Download PDF

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Publication number
EP0751283B1
EP0751283B1 EP96810367A EP96810367A EP0751283B1 EP 0751283 B1 EP0751283 B1 EP 0751283B1 EP 96810367 A EP96810367 A EP 96810367A EP 96810367 A EP96810367 A EP 96810367A EP 0751283 B1 EP0751283 B1 EP 0751283B1
Authority
EP
European Patent Office
Prior art keywords
pressure steam
low
outer casing
steam turbine
concrete foundation
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
EP96810367A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0751283A3 (de
EP0751283A2 (de
Inventor
Heinrich Lageder
Urs Ritter
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 Switzerland GmbH
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
Application filed by Alstom SA filed Critical Alstom SA
Publication of EP0751283A2 publication Critical patent/EP0751283A2/de
Publication of EP0751283A3 publication Critical patent/EP0751283A3/de
Application granted granted Critical
Publication of EP0751283B1 publication Critical patent/EP0751283B1/de
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
    • F01D25/24—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
    • 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
    • F01D25/26—Double casings; Measures against temperature strain in casings

Definitions

  • the invention relates to a capacitor Low pressure steam turbine.
  • EP-A1-05 75 642 discloses a double-casing low-pressure steam turbine known, which mainly consists of an inner housing with the turbine rotor and an outer casing with an evaporation chamber consists.
  • the outer housing is divided into two, i.e. it has an upper and a lower part.
  • the outer housing lower part is designed as an empty steel casing and in arranged a recess of the concrete foundation.
  • the capacitor connects to the end of the lower part of the housing. Either the parting line of the two housing parts as well as the capacitor connection are part of the foundation.
  • the bearings for the inclusion of the rotor are above the Parting plane, i.e. above the foundation table.
  • EP-A1-03 84 200 describes a steam condenser at ground level Installation next to the steam turbine known, which over an exhaust hood is connected to the steam turbine.
  • the Steam escapes above the foundation.
  • the capacitor is simple Sliding shoes supported separately from the steam turbine, which reduces the load on the concrete foundation.
  • the invention tries to avoid all these disadvantages. you the task is based on the efficiency of one with one Increase condenser connected low pressure steam turbine and reduce their manufacturing costs.
  • the Parting plane of the upper and lower part of the outer housing in Axle height of the turbine rotor lies and the concrete foundation up to the parting line.
  • Both the lower part of the outer case as well as the bearings of the turbine rotor are in the concrete foundation established.
  • the outer casing is at least one-sided open, the opening (s) being rectangular and arranged horizontally to the axis of the turbine rotor is / are. With only one side opening of the outer housing is a capacitor with two side openings connected.
  • the upper part of the External housing from a mounting hood and one with the lower part and connected to the capacitor in a material or non-positive manner Frame member is both with the lower part of the outer housing as well as with the frame part or positively connected, the latter between the capacitor and mounting hood is arranged. With two capacitors a frame part is formed on both sides.
  • the outer housing is open on one side, the to the side and at the same level as the low-pressure steam turbine attached condenser in the area of the entire opening with be connected to the evaporation chamber. Is the outer casing on both sides Open, both capacitors are the same Way connected to the steam room. The steam flow arrives with both variants directly and without again to be redirected to the condenser. Consequently the pressure loss is reduced and the efficiency compared improved the prior art.
  • the frame part which is connected by material or force fit serves the purpose Stiffening of the outer housing upper part.
  • the hood can be designed as an assembly hood. It is therefore much lighter and simpler than the evaporation hoods of the prior art. Also guaranteed the mounting hood for better accessibility the internal components of the low pressure steam turbine. Also a welded sheet steel construction of the assembly hood is possible. This reduces the manufacturing costs and the Installation work on the steam turbine continues.
  • the frame part or the frame parts of the upper part are material or non-positive connected to the lower part of the outer housing.
  • loose Parts are just the inner casing with the turbine rotor and executed the assembly hood.
  • outer housing lower part and frame part / s
  • outer formwork ribs are at the lower part of the outer housing several preferably arranged vertical, outer formwork ribs. This creates when creating the concrete foundation an intimate connection with the lower part, so that the occurring forces are better derived via the foundation can be.
  • low pressure steam turbines can be realized, in which system two or more, analog trained Low pressure steam turbines are connected to each other.
  • turbo group consisting of a low pressure steam turbine and associated high pressure or medium pressure steam turbines possible, the high pressure or medium pressure steam turbines Have bearings, which are analog the bearings of the low pressure steam turbine are.
  • the low-pressure steam turbine is located on the ground floor and has a double casing trained, i.e. their housing essentially consists an outer housing 1 and an inner housing 2, which are arranged separately from each other. This allows the mass and movement forces of the outer housing 1 are not act on the inner housing 2 and vice versa.
  • An evaporation chamber 3 is located between the outer and inner housings 1, 2 educated.
  • a turbine rotor 4 is arranged in the inner housing 2 and rotatably connected to a shaft end part 5.
  • the two-part outer housing 1 consists of an upper and a Lower part 6, 7, the parting plane 8 at the level of the axis 9 of the turbine rotor 4.
  • On both sides of the turbine rotor 4 is a bearing 10 with corresponding support bearings 11 for the turbine rotor 4 formed (Fig. 1).
  • the outer casing 1 has a housing bushing 12 on both sides for the shaft end part 5 of the turbine rotor 4. In the area of each housing bushing 12 is an encapsulated on the shaft end part 5 Shaft seal 13 arranged which the evaporation chamber 3 after seals outside.
  • the low pressure steam turbine is supported by a concrete foundation 14 added, which has a recess 15 for this purpose.
  • the lower part 7 of the outer housing 1 is as one Steel formwork up to the parting line 8 of the outer casing 1 reaching concrete foundation 14 formed. So that are both the lower part 7 of the outer housing 1 and the bearings 10 of the turbine rotor 4 set in the concrete foundation 14 (Fig. 1, Fig. 2).
  • a condenser 16 is arranged and connected to the evaporation chamber 3.
  • the condenser 16 like the steam turbine, is at ground level established.
  • the outer casing 1 of the low-pressure steam turbine perpendicular and horizontal to axis 9 of the turbine rotor 4 open on one side.
  • the capacitor 16 connects to the opening 17 of the outer housing 1 (FIG. 2).
  • the lower part 7 of the outer housing 1 has a top view a U-shape, which is open to the capacitor 16 (Fig. 3).
  • the formwork ribs 18 can of course also be aligned differently his.
  • the upper part 6 of the outer housing 1 is a mounting hood 19 and one with the lower part 7 and the capacitor Form-fittingly connected frame part 20 is formed.
  • the assembly hood 19 closes the evaporation chamber 3 above the parting plane 8 complete. It consists of a welded sheet steel construction with two end walls 21 and stiffeners 22 as well as a vertical and a horizontal Connection flange 23, 24.
  • an evaporator nozzle 25 attached over which the steam from the not shown medium pressure steam turbine is fed.
  • the frame part 20 is bow-shaped and on the capacitor 16 and welded to the lower part 7 of the outer housing 1 (Fig. 2). It is at least partially inside hollow and is in the manufacture of the concrete foundation 14th shed simultaneously with the lower part 7 of the outer housing 1. Of course, it can also only be welded. A positive connection by means of screws is also possible.
  • the frame part 20 carries the mounting hood 19 and is the link between it and the capacitor 16. For this purpose, it is connected to the vertical connecting flange 23 Mounting hood 19 screwed. However, another can non-positive or a positive connection selected become.
  • To seal the lower part 7 of the outer housing 1 screwed mounting hood 19 is on the horizontal Connection flange 24 welded a sealing strip, not shown. Another sealing strip is between the vertical Connection flange 23 and the frame part 20 arranged.
  • other suitable sealants can also be used Find use.
  • the bearing saddle 26 receives an oil pan 27, which with an in the concrete foundation 14 integrated oil drain line 28 connected is.
  • the support bearing 11 is arranged in the bearing saddle 26 and secured against vertical movements (Fig. 1).
  • the depository 10 is covered with a housing cover 29.
  • the inner housing is in the region of the base 30 of the recess 15 2 of the low pressure steam turbine mounted on four supports 31 and guided over two guides 32 in the axial direction.
  • the guides 32 are connected to the concrete foundation 14 and adjustable transversely to the axis 9 of the turbine rotor 4 (FIG. 4).
  • the steam flow from the medium pressure steam turbine, not shown, over the Inlet nozzle 25 introduced into the inner housing 2. He drives the turbine rotor 4 and is up to the evaporation pressure relaxed. Finally, the steam passes through the Evaporation chamber 3 and the opening 17 of the outer housing 1 direct path, i.e. without having to be redirected again in the capacitor 16 and is deposited there.
  • capacitors 16 connected to the low pressure steam turbine.
  • their Outer housing 1 on both sides at right angles and horizontally arranged to the axis 9 of the turbine rotor 4, lateral Opening 17 on.
  • capacitor 16 at each opening 17 connected and each with a frame part 20 and the lower part 7 of the outer housing 1 connected (not shown). All other components are essentially analogous to that shown Embodiment designed and arranged.
  • the invention is not limited to the exemplary embodiment described and illustrated with a low-pressure steam turbine.
  • two or more, analog, low-pressure steam turbines can be connected to one another.
  • the bearing points of high-pressure or medium-pressure steam turbines connected to the low-pressure steam turbine to form a turbo group can also be designed in the same way as the bearing points 10 of the low-pressure steam turbine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP96810367A 1995-06-30 1996-06-06 Abstützung einer Niederdruck-Dampfturbine Expired - Lifetime EP0751283B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19523923A DE19523923C2 (de) 1995-06-30 1995-06-30 Niederdruck-Dampfturbine
DE19523923 1995-06-30

Publications (3)

Publication Number Publication Date
EP0751283A2 EP0751283A2 (de) 1997-01-02
EP0751283A3 EP0751283A3 (de) 1999-03-24
EP0751283B1 true EP0751283B1 (de) 2002-10-02

Family

ID=7765726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810367A Expired - Lifetime EP0751283B1 (de) 1995-06-30 1996-06-06 Abstützung einer Niederdruck-Dampfturbine

Country Status (4)

Country Link
US (1) US5779435A (ja)
EP (1) EP0751283B1 (ja)
JP (1) JP3863596B2 (ja)
DE (2) DE19523923C2 (ja)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19715492C2 (de) * 1997-04-14 1999-08-12 Siemens Ag Dampfturbinenanlage
DE19755981B4 (de) * 1997-12-17 2005-09-15 Alstom Dampfturbinenanlage
EP1046789A1 (de) 1999-04-22 2000-10-25 Asea Brown Boveri AG Lagerblock für eine Dampfturbine und Verfahren zur Montage desselben
US6971842B2 (en) * 2003-09-22 2005-12-06 General Electric Company Low pressure steam turbine exhaust hood
DE502005011027D1 (de) 2005-03-23 2011-04-14 Siemens Ag Rohrdurchführung und Verfahren zum Durchführen eines Mediums durch eine Trennwand
US7640724B2 (en) * 2006-01-25 2010-01-05 Siemens Energy, Inc. System and method for improving the heat rate of a turbine
EP2372111A1 (en) * 2010-03-27 2011-10-05 Alstom Technology Ltd Low pressure turbine with two independent condensing systems
CN102242646B (zh) * 2010-05-13 2014-09-03 上海电气电站设备有限公司 汽轮机的低压外缸下半的低压钢架的布置结构
JP5374454B2 (ja) * 2010-07-16 2013-12-25 三菱重工業株式会社 軸受箱固定方法及び装置
JP2012112359A (ja) * 2010-11-26 2012-06-14 Toshiba Corp 軸流排気タービンの軸受台カバーおよび軸流排気タービン
JP5766447B2 (ja) * 2011-01-19 2015-08-19 三菱日立パワーシステムズ株式会社 タービン外部車室
US8821110B2 (en) * 2011-05-05 2014-09-02 General Electric Company Support arrangement for a steam turbine LP inner casing
EP2828487B1 (en) 2012-03-20 2017-12-06 General Electric Technology GmbH Low pressure steam turbine seal arrangement
ES2635107T3 (es) 2013-02-05 2017-10-02 General Electric Technology Gmbh Central termoeléctrica de vapor con una segunda turbina de baja presión y un sistema de condensación adicional y procedimiento para la operación de dicha central termoeléctrica de vapor
EP2832959A1 (de) * 2013-08-01 2015-02-04 Siemens Aktiengesellschaft Gehäuse, insbesondere Außengehäuse für eine Niederdruckdampfturbine
JP6087803B2 (ja) * 2013-12-25 2017-03-01 三菱重工業株式会社 蒸気タービン
JP5766835B2 (ja) * 2014-02-24 2015-08-19 三菱日立パワーシステムズ株式会社 タービン外部車室用架台の施工方法
JP6235502B2 (ja) * 2015-01-27 2017-11-22 三菱日立パワーシステムズ株式会社 蒸気タービン設備
CN106499451A (zh) * 2016-11-01 2017-03-15 东方电气集团东方汽轮机有限公司 一种汽轮机低压缸结构
JP6755783B2 (ja) * 2016-11-24 2020-09-16 株式会社東芝 蒸気タービン
JP6817795B2 (ja) * 2016-11-24 2021-01-20 株式会社東芝 蒸気タービン
JP6884660B2 (ja) * 2017-07-13 2021-06-09 三菱パワー株式会社 蒸気タービンシステム
JP6833745B2 (ja) * 2018-03-06 2021-02-24 株式会社東芝 蒸気タービン
JP7330084B2 (ja) * 2019-12-11 2023-08-21 株式会社東芝 蒸気タービン
CN112459848A (zh) * 2020-11-23 2021-03-09 东方电气集团东方汽轮机有限公司 一种方便纯凝背压切换的三缸三排汽汽轮机及其切换方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034924B (de) * 1953-08-21 1958-07-24 Sulzer Ag Gasturbine mit verripptem Gehaeuse
US3520634A (en) * 1966-12-02 1970-07-14 Bbc Brown Boveri & Cie Exhaust steam housing for low pressure steam turbines
SE335994B (ja) * 1970-04-13 1971-06-21 Asea Atom Ab
US3628884A (en) * 1970-06-26 1971-12-21 Westinghouse Electric Corp Method and apparatus for supporting an inner casing structure
FR2583458B1 (fr) * 1985-06-14 1987-08-07 Alsthom Atlantique Dispositif de liaison entre une turbine a vapeur et un condenseur.
US4866941A (en) * 1988-07-05 1989-09-19 Westinghouse Electric Corp. Single condenser arrangement for side exhaust turbine
EP0384200B1 (de) * 1989-02-23 1993-09-22 Asea Brown Boveri Ag Dampfkondensator
FR2651276B1 (fr) * 1989-08-28 1991-10-25 Alsthom Gec Condenseur en beton pour turbine a echappement axial et turbine munie d'un tel condenseur.
EP0575642B1 (de) * 1992-06-20 1997-01-22 Asea Brown Boveri Ag Aussengehäuse einer Niederdruck Dampfteilturbine
FR2697053B1 (fr) * 1992-10-21 1994-12-09 Alsthom Gec Condenseur en béton pour turbine à vapeur à échappement axial avec montage simplifié des faisceaux.

Also Published As

Publication number Publication date
DE59609737D1 (de) 2002-11-07
DE19523923C2 (de) 2003-09-18
DE19523923A1 (de) 1997-01-02
JP3863596B2 (ja) 2006-12-27
EP0751283A3 (de) 1999-03-24
JPH0913913A (ja) 1997-01-14
US5779435A (en) 1998-07-14
EP0751283A2 (de) 1997-01-02

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