EP0575642A1 - Carter extérieur d'une turbine à vapeur basse pression - Google Patents

Carter extérieur d'une turbine à vapeur basse pression Download PDF

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Publication number
EP0575642A1
EP0575642A1 EP92110432A EP92110432A EP0575642A1 EP 0575642 A1 EP0575642 A1 EP 0575642A1 EP 92110432 A EP92110432 A EP 92110432A EP 92110432 A EP92110432 A EP 92110432A EP 0575642 A1 EP0575642 A1 EP 0575642A1
Authority
EP
European Patent Office
Prior art keywords
foundation
casing
turbine
pressure steam
parting plane
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.)
Granted
Application number
EP92110432A
Other languages
German (de)
English (en)
Other versions
EP0575642B1 (fr
Inventor
Rainer Erber
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP92110432A priority Critical patent/EP0575642B1/fr
Priority to DE59207955T priority patent/DE59207955D1/de
Priority to US08/070,934 priority patent/US5290146A/en
Publication of EP0575642A1 publication Critical patent/EP0575642A1/fr
Application granted granted Critical
Publication of EP0575642B1 publication Critical patent/EP0575642B1/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

Definitions

  • the invention relates to the welded outer casing of a low-pressure steam turbine, which consists of an upper and a lower part, a capacitor being located on the lower part and the lower part being connected to the foundation in such a way that the housing can be expanded.
  • Such outer casings of LP steam turbines are known. They are designed as welded structures and consist of an upper part and a supporting lower part. The parting plane between these two parts is in the horizontal plane of the turbine axis.
  • the outer housing lies on the foundation with supports attached laterally over the entire length of the lower part.
  • the supports are designed in such a way that the outer housing can expand freely.
  • the lateral center guide of the outer housing is ensured by wedge guides on the foundation plates.
  • the capacitor is welded to the load-bearing lower part of the base.
  • the invention tries to avoid all these disadvantages. It is therefore an object of the invention to provide a low-pressure steam turbine outer casing which enables higher efficiency with reduced transport, material and assembly costs.
  • the lower part consists of a casing of the foundation
  • the parting plane between the upper and lower part of the outer housing runs parallel below the horizontal plane of the turbine axis and this parting plane and the condenser connection are components of the foundation. It is advantageous if the distance between this parting plane and the horizontal plane of the turbine axis is approximately 1 meter.
  • the support of the LP outer housing / inner housing remains in the usual parting plane.
  • the advantages of the invention are based primarily on the fact that the modified lower part of the outer casing of the low-pressure turbine part in contrast to the prior art, it is not a supporting lower part and therefore does not represent an outer housing lower part in the original sense.
  • the advantages of the invention can be seen, inter alia, in the elimination of the previously usual transportation of the very heavy and large ND lower parts. All work can be carried out with relatively simple components on the construction site. There is a cost reduction of approximately 50%. Since the force introduction of the capacitor goes directly into the foundation and the vacuum can be absorbed from the lower part via the foundation, rods and struts in the modified ND lower part according to the invention can be reduced by approx. 80% in comparison to the prior art, thereby increasing the efficiency.
  • the outer casing of a low-pressure steam turbine It consists of a split upper housing part 1 and a modified lower housing part 2 in the form of an empty casing of the foundation 5.
  • the evaporation walls of the modified lower housing part 2 are connected to the foundation 5 by means of numerous anchors 7 in such a way that expansion is made possible. This is also achieved by attaching membranes.
  • the support for the inner casing 8 of the LP sub-turbine is fastened in the foundation 5.
  • Under the modified lower part 2 of the LP turbine is the Capacitor 3, the capacitor connection 4 being a direct component of the foundation 5.
  • the parting plane 6 between the upper part 1 and the modified lower part 2 of the outer housing runs parallel to the horizontal plane of the turbine axis. The distance between these two levels is 1 m.
  • the foundation 5 extends in height to the parting plane 6 between the upper and lower part, ie the parting plane is part of the foundation 5.
  • the steam passes from the outlet of the MD sub-turbine via an overflow line directly into the LP sub-turbine. There it is depressurized to the evaporation pressure and then deposited in the condenser 3. For venting and dewatering the gap between the foundation 5 and the evaporation walls of the modified lower part 2 of the turbine outer casing, 5 cutouts are provided at the upper and lower ends of the foundation.
  • the lower part 2 of the outer casing of the LP sub-turbine has no foundation supports.
  • the force introduction of the capacitor 3 no longer goes into the foundation 5 via the LP turbine lower part, but instead takes place directly into the foundation 5.
  • the vacuum pull can be absorbed via the foundation 5. The result is that the number of struts in the lower part can be kept very low, thereby increasing the efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP92110432A 1992-06-20 1992-06-20 Carter extérieur d'une turbine à vapeur basse pression Expired - Lifetime EP0575642B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP92110432A EP0575642B1 (fr) 1992-06-20 1992-06-20 Carter extérieur d'une turbine à vapeur basse pression
DE59207955T DE59207955D1 (de) 1992-06-20 1992-06-20 Aussengehäuse einer Niederdruck Dampfteilturbine
US08/070,934 US5290146A (en) 1992-06-20 1993-06-04 Outer casing of a low-pressure part of a steam turbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92110432A EP0575642B1 (fr) 1992-06-20 1992-06-20 Carter extérieur d'une turbine à vapeur basse pression

Publications (2)

Publication Number Publication Date
EP0575642A1 true EP0575642A1 (fr) 1993-12-29
EP0575642B1 EP0575642B1 (fr) 1997-01-22

Family

ID=8209729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110432A Expired - Lifetime EP0575642B1 (fr) 1992-06-20 1992-06-20 Carter extérieur d'une turbine à vapeur basse pression

Country Status (3)

Country Link
US (1) US5290146A (fr)
EP (1) EP0575642B1 (fr)
DE (1) DE59207955D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5779435A (en) * 1995-06-30 1998-07-14 Asea Brown Boveri Ag Low-pressure steam turbine
EP1046789A1 (fr) 1999-04-22 2000-10-25 Asea Brown Boveri AG Structure de support pour une turbine à vapeur et sa méthode de construction
EP2832959A1 (fr) * 2013-08-01 2015-02-04 Siemens Aktiengesellschaft Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971842B2 (en) * 2003-09-22 2005-12-06 General Electric Company Low pressure steam turbine exhaust hood
US7785068B2 (en) * 2007-05-17 2010-08-31 General Electric Company Steam turbine exhaust hood and method of fabricating the same
JP6235989B2 (ja) 2014-12-01 2017-11-22 三菱日立パワーシステムズ株式会社 蒸気タービンケーシング
JP6817795B2 (ja) * 2016-11-24 2021-01-20 株式会社東芝 蒸気タービン
JP6847673B2 (ja) * 2017-01-17 2021-03-24 株式会社東芝 タービン排気室

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004392A2 (fr) * 1978-03-21 1979-10-03 BBC Aktiengesellschaft Brown, Boveri & Cie. Dispositif de support pour une turbine et un condensateur
DE3826508A1 (de) * 1988-08-04 1990-02-08 Asea Brown Boveri Auflagerung einer axial fixierten dampfturbine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642380A (en) * 1970-04-07 1972-02-15 Westinghouse Electric Corp Turbine support structure
CH552130A (de) * 1972-11-28 1974-07-31 Bbc Brown Boveri & Cie Turbinengehaeuse.
CH552129A (de) * 1972-11-28 1974-07-31 Bbc Brown Boveri & Cie Gehaeuse einer stroemungsmaschine.
JPS5938402B2 (ja) * 1975-11-07 1984-09-17 株式会社日立製作所 タ−ビンテイアツケ−シング
JPS6397807A (ja) * 1986-10-13 1988-04-28 Toshiba Corp 蒸気タービン

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0004392A2 (fr) * 1978-03-21 1979-10-03 BBC Aktiengesellschaft Brown, Boveri & Cie. Dispositif de support pour une turbine et un condensateur
DE3826508A1 (de) * 1988-08-04 1990-02-08 Asea Brown Boveri Auflagerung einer axial fixierten dampfturbine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 336 (M-739)1988 & JP-A-63 097 807 ( TOSHIBA CORP ) 28. April 1988 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5779435A (en) * 1995-06-30 1998-07-14 Asea Brown Boveri Ag Low-pressure steam turbine
EP1046789A1 (fr) 1999-04-22 2000-10-25 Asea Brown Boveri AG Structure de support pour une turbine à vapeur et sa méthode de construction
EP2832959A1 (fr) * 2013-08-01 2015-02-04 Siemens Aktiengesellschaft Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression
WO2015014681A1 (fr) * 2013-08-01 2015-02-05 Siemens Aktiengesellschaft Carter, en particulier carter extérieur pour une turbine à vapeur à basse pression

Also Published As

Publication number Publication date
US5290146A (en) 1994-03-01
EP0575642B1 (fr) 1997-01-22
DE59207955D1 (de) 1997-03-06

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