EP2832959A1 - Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression - Google Patents

Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression Download PDF

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Publication number
EP2832959A1
EP2832959A1 EP13178867.1A EP13178867A EP2832959A1 EP 2832959 A1 EP2832959 A1 EP 2832959A1 EP 13178867 A EP13178867 A EP 13178867A EP 2832959 A1 EP2832959 A1 EP 2832959A1
Authority
EP
European Patent Office
Prior art keywords
housing
metal walls
stiffening means
sheet metal
steam turbine
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Withdrawn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
EP13178867.1A
Other languages
German (de)
English (en)
Inventor
David Barkowski
Manuel Ettler
Ralf Hoffacker
Bora Kocdemir
Simon Voss
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 EP13178867.1A priority Critical patent/EP2832959A1/fr
Priority to PCT/EP2014/065782 priority patent/WO2015014681A1/fr
Priority to EP14747331.8A priority patent/EP2997238A1/fr
Priority to CN201480038748.9A priority patent/CN105378233A/zh
Publication of EP2832959A1 publication Critical patent/EP2832959A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/12—Two-dimensional rectangular
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/14—Two-dimensional elliptical
    • F05D2250/141—Two-dimensional elliptical circular

Definitions

  • the invention relates to a housing, in particular an outer housing for a low-pressure steam turbine, according to the preamble of claim 1.
  • An example of a housing is from the EP 0 575 642 A1 known.
  • the outer housing is designed here as welded constructions and consists of an upper part and a supporting lower part.
  • the supporting lower part is connected to the bottom of the capacitor. Together, these then form a closed space to the environment in which atmospheric pressure prevails.
  • the condenser pressure which usually moves in the two-digit millibar range, is present inside the outer housing, the full ambient pressure acts on the outer housing. Due to the design of the outer housing as a large-scale sheet metal construction, the problem arises that large forces act on this outer shell of large-scale sheet metal walls, and it comes to deformations of the same.
  • stiffeners are provided.
  • inner stiffening rods which are arranged in a kind of a truss structure used.
  • the object of the invention is to provide a housing which overcomes these disadvantages.
  • Pass wedges between the at least one annular stiffening means and the sheet metal walls allow that the outer dimensions of the at least one annular stiffening means do not have to correspond exactly to the default dimensions of the inner dimensions of the housing.
  • the stiffening rings can thus have a slightly smaller outer diameter and the remaining gaps between the annular stiffening means and the metal walls of the housing are then closed by the introduced into the columns pass wedges or other intermediate elements for closing the remaining column, so that the components then, for. B. can be joined together by welding.
  • the annular stiffening means may be provided in different vertical planes of the housing and welded to the inside of the metal walls of the housing.
  • the annular stiffening means are each arranged horizontally in the vertical planes, so that a plurality of annular stiffening means come to rest parallel to one another.
  • the effect according to the invention is still given even if the annular stiffening means are almost horizontal, that is to say are arranged with slight angular deviations from the horizontal, to each other in different vertical planes.
  • annular stiffening means are nearly circular, they support the sheet metal walls of the housing at the locations of the sheet metal wall surfaces where, owing to the large pressure difference, the greatest deformation is present, namely in the middle between two sheet metal wall edges.
  • annular stiffening means are oval, the support of the sheet metal walls takes place decentrally at points which lie closer to the sheet-metal wall edges. If such oval annular stiffening means are each rotated by 90 degrees in directly superimposed vertical planes, a support of the sheet metal walls and thus a rigidity at different points of the sheet metal walls can be achieved. The stiffness can be further improved when oval and nearly circular stiffeners alternate over the various vertical planes, thus supporting the sheet metal walls in each of the planes at different locations on the wall surface.
  • FIG. 1 1 is a plan view of a lower part 1 of the housing with a welded capacitor of a low-pressure steam turbine.
  • Large-scale lateral metal walls 2 on a rectangular - here square - base limit the volume of this base and form together with the upper part of the housing of the low-pressure steam turbine.
  • the four lateral sheet metal walls 2 are each at their edges with each other and welded to the floor panel.
  • the sheet metal walls 2 do not have sufficient inherent rigidity due to their large sheet metal structures themselves. Due to the large pressure difference between the environment and the coated volume, it can thus lead to denting, so that a safe operation of the low-pressure steam turbine is no longer guaranteed.
  • stiffening means R1 are provided for stiffening the large-area sheet-metal walls, but at the same time also have the simplest possible construction and thus a low cost and assembly outlay.
  • the annular stiffening means R1 then absorb the forces acting on the sheet metal walls due to the high pressure difference between the environment and the interior.
  • this annular stiffening means R1 is formed almost circular for a lower part 1 with a square base.
  • the forces resulting from the pressure difference can be taken up exactly at the points of the sheet metal walls 2, where they have their weakest point for a force , namely in the middle between two edges of a large sheet metal wall.
  • the outer dimensions of the annular stiffening means need not have accurate dimensions with respect to the internal dimensions of the volume enclosed by the sheet metal walls 2. Rather, at the points 3 not shown here fitting keys in possibly existing gaps between the at least one annular stiffening means R1 and the sheet metal walls 2 of the lower part 1 is introduced and then with the stiffening agent R1 be welded to the sheet metal walls 2. Ultimately, it is always important that the stiffening means interact with the sheet metal walls in such a way that impermissible denting of the sheet metal walls is prevented.
  • FIG. 2 a second embodiment of the annular stiffening means is shown.
  • the annular stiffening means R2 and R3 are formed here oval and rotated 90 degrees against each other introduced into two different vertical planes in the lower part 1 and welded to the sheet-metal walls 2. Due to their oval shape, the annular stiffening means R2 and R3 now support the sheet-metal walls 2 at points 3 'which lie closer to the edges. If these two vertical planes lie below one another without appreciable distance, the annular reinforcing means can additionally be welded together at the junctions 4 or joined together in any other way.
  • the present invention is not limited to the two previously described embodiments for a low-mounted capacitor. Rather, it is also applicable to any type of housing structure of steam turbines, which have a nearly rectangular cross section and which are loaded by external pressure, such as the adjacent to the lower part of the condenser housing or low pressure steam turbine outer casing or low pressure steam turbine outer casing for other types of installation than the outflow downward.
  • the basic idea is that, for housings that have a rectangular cross-section due to other constraints, an annular stiffener, which per se has the most favorable structure to withstand the given load, is used for stiffening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
EP13178867.1A 2013-08-01 2013-08-01 Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression Withdrawn EP2832959A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13178867.1A EP2832959A1 (fr) 2013-08-01 2013-08-01 Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression
PCT/EP2014/065782 WO2015014681A1 (fr) 2013-08-01 2014-07-23 Carter, en particulier carter extérieur pour une turbine à vapeur à basse pression
EP14747331.8A EP2997238A1 (fr) 2013-08-01 2014-07-23 Carter, en particulier carter extérieur pour une turbine à vapeur à basse pression
CN201480038748.9A CN105378233A (zh) 2013-08-01 2014-07-23 壳体、特别是用于低压汽轮机的外壳体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13178867.1A EP2832959A1 (fr) 2013-08-01 2013-08-01 Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression

Publications (1)

Publication Number Publication Date
EP2832959A1 true EP2832959A1 (fr) 2015-02-04

Family

ID=48906147

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13178867.1A Withdrawn EP2832959A1 (fr) 2013-08-01 2013-08-01 Boîtier, notamment boîtier extérieur pour une turbine à vapeur à basse pression
EP14747331.8A Withdrawn EP2997238A1 (fr) 2013-08-01 2014-07-23 Carter, en particulier carter extérieur pour une turbine à vapeur à basse pression

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14747331.8A Withdrawn EP2997238A1 (fr) 2013-08-01 2014-07-23 Carter, en particulier carter extérieur pour une turbine à vapeur à basse pression

Country Status (3)

Country Link
EP (2) EP2832959A1 (fr)
CN (1) CN105378233A (fr)
WO (1) WO2015014681A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018201488A1 (de) * 2018-01-31 2019-08-01 Siemens Aktiengesellschaft Elektrisches Gerät mit Pressplatten zum Verspannen eines magnetisierbaren Kerns

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0575642A1 (fr) * 1992-06-20 1993-12-29 Asea Brown Boveri Ag Carter extérieur d'une turbine à vapeur basse pression
EP0751283A2 (fr) * 1995-06-30 1997-01-02 ABB Management AG Support pour turbine à vapeur à basse pression
US20130177443A1 (en) * 2011-01-19 2013-07-11 Makoto Kondo Turbine external compartment, frame for turbine external compartment, and method of constructing frame for turbine external compartment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892500A (en) * 1974-07-10 1975-07-01 Westinghouse Electric Corp Adjustable axial positioning device
JP3595438B2 (ja) * 1997-09-17 2004-12-02 三菱重工業株式会社 低圧蒸気タービン内車室支持構造
US7785068B2 (en) * 2007-05-17 2010-08-31 General Electric Company Steam turbine exhaust hood and method of fabricating the same
CN201714422U (zh) * 2010-07-02 2011-01-19 王宽喜 应急救生舱

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0575642A1 (fr) * 1992-06-20 1993-12-29 Asea Brown Boveri Ag Carter extérieur d'une turbine à vapeur basse pression
EP0751283A2 (fr) * 1995-06-30 1997-01-02 ABB Management AG Support pour turbine à vapeur à basse pression
US20130177443A1 (en) * 2011-01-19 2013-07-11 Makoto Kondo Turbine external compartment, frame for turbine external compartment, and method of constructing frame for turbine external compartment

Also Published As

Publication number Publication date
CN105378233A (zh) 2016-03-02
WO2015014681A1 (fr) 2015-02-05
EP2997238A1 (fr) 2016-03-23

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