EP2211022A1 - Einlassspiralgehäuse für eine Dampfturbine und Dampfturbine - Google Patents

Einlassspiralgehäuse für eine Dampfturbine und Dampfturbine Download PDF

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Publication number
EP2211022A1
EP2211022A1 EP09000798A EP09000798A EP2211022A1 EP 2211022 A1 EP2211022 A1 EP 2211022A1 EP 09000798 A EP09000798 A EP 09000798A EP 09000798 A EP09000798 A EP 09000798A EP 2211022 A1 EP2211022 A1 EP 2211022A1
Authority
EP
European Patent Office
Prior art keywords
inlet volute
steam turbine
inlet
volute
parts
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Withdrawn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
EP09000798A
Other languages
English (en)
French (fr)
Inventor
Per Hortlund
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 EP09000798A priority Critical patent/EP2211022A1/de
Publication of EP2211022A1 publication Critical patent/EP2211022A1/de
Withdrawn legal-status Critical Current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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/026—Scrolls for radial machines or engines
    • 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
    • F01D25/243—Flange connections; Bolting arrangements
    • 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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Definitions

  • the present invention relates to an inlet volute of a steam turbine, whereby the inlet volute supplies steam to blades which are fixed at a rotor device which is rotatably mounted around an axis, whereby the inlet volute is arranged inside an outer casing of the steam turbine and whereby the inlet volute is split along a split plane in two parts which are being fixed together to build the inlet volute.
  • the invention relates further to a steam turbine comprising at least one inlet volute, which is arranged inside an outer casing of the steam turbine, whereby the at least one inlet volute supplies steam to blades which are fixed at a rotor device which is rotatably mounted around an axis.
  • the inlet volute of a steam turbine supplies steam evenly over the circumference of a turbine stage, leading to aerodynamic efficiency.
  • the inlet volute for even steam distribution to the first inlet stage protect the outer turbine casing from very hot inlet steam.
  • a single inlet volume provides optimal performance for combined-cycle sliding pressure operation.
  • the inlet volute is surrounded by the outer turbine casing.
  • the dimension of the outer casing is therefore dependent from the size and form of the inlet volute.
  • Known inlet volutes comprise to parts which are fixed together at a horizontal split plane. Horizontal means the direction of the split plane relating to the axis of the rotor device of the steam turbine.
  • the problem to be solved by the present invention is to keep the dimension of an inlet volute, which consists of two parts, of a steam turbine and the size of the outer casing of the steam turbine, in which the inlet volute is arranged, small.
  • a steam turbine should be established, whereby the dimension of the steam turbine can be kept small.
  • an inlet volute of a steam turbine whereby the inlet volute supplies steam to blades which are fixed at a rotor device which is rotatably mounted around an axis, whereby the inlet volute is arranged inside an outer casing of the steam turbine whereby the inlet volute is split along a split plane in two parts which are being fixed together to build the inlet volute, and whereby the split plane of the two parts of the inlet volute is inclined relating to the axis of the rotor device of the steam turbine.
  • the core of the invention is the specific location and arrangement of the split plane of the two parts of the inlet volute.
  • the split plane is inclined with regard to the extension of the axis of the rotor of the steam turbine. This enables that the dimension of the inlet volute inside the outer casing of the steam turbine can be kept relatively small.
  • the fixation of the two parts can be made along the inclined split plane and therefore the fixating devices, like bolts, can be placed at an inconsiderable position. That means the fixation of the two parts of the inlet volute is been made at a position, in which the fixation does not enlarge the dimension of the inlet volute inside the outer turbine casing.
  • Inclined means that the split plane is arranged in an angle between 0° and 90° regarding the axis of the rotor of the steam turbine.
  • the outer casing of the steam turbine can be kept small because the fixating devices of the inlet volute are arranged at a position, where they do not influence the form of the outer casing. Because of keeping the dimensions of the volute down it is possible to save size on the outer turbine casing.
  • the arrangement of the split plane of the two parts of the inlet volute and therefore the position of the fixating devices to fix both parts together enable that there is no need of extra space for the split plane fixating devices, like split plane bolts. An inlet volute like this can save space to keep the dimensions of the outer casing down.
  • the split plane of the inlet volute is inclined with an angle between 20° to 70°, in particular between 40° to 50°, relating to the axis of the steam turbine.
  • the arrangement of the split plane in such a way allows that the outer casing of the steam turbine can be arranged vertically and horizontally as near as possible next to the inlet volute, because the fixation of the two parts of the inlet volute is arranged at the split plane.
  • an inlet volute is preferred where the plane of the inlet volute is inclined with an angle of 45° in regard to the axis of the steam turbine.
  • the two parts of the inlet volute can be fixed together by different fixating devices.
  • the two parts of the inlet volute are fixed together by bolts or screws, respectively.
  • the fixation could be made by a clamp-connection or a welded-connection, as well.
  • the two parts of the inlet volute comprise in a preferred embodiment bore holes for passing through bolts.
  • the inlet volute comprises a fixating device for fixation at the outer casing of the steam turbine.
  • the fixating device can comprise a bore hole, a clamp-connection or a welded-connection.
  • a steam turbine comprising at least one inlet volute, which is arranged inside an outer casing of the steam turbine, whereby the at least one inlet volute supplies steam to blades which are fixed at a rotor device which is rotatably mounted around an axis, and whereby the inlet volute is being built according to the first aspect of the invention.
  • a steam turbine having such an inlet volute can have smaller outer dimensions, because the outer turbine casing can be kept smaller, then the known outer turbine casing.
  • the outer casing can be arranged very close to the casing of the inlet volute in vertically and horizontally direction, because the fixating devices are placed in the area between the vertically and horizontally direction of the inlet volute.
  • the inclined split plane enables the arrangement of the fixating devices, like bolts, to mount the two parts of the inlet volute together, in an inconspicuous place.
  • the inlet volute is preferred fixed at the outer turbine casing by means of a fixating device, like a bolded-connection.
  • the steam turbine is preferably a low-pressure steam turbine.
  • Fig. 1 shows an inlet volute 1 which is divided into a first 4 and a second part 5.
  • the two parts 4, 5 are mounted to each other at the split plane 3.
  • the split plane 3 is inclined in regard to the direction of the axis 6 of a not shown rotor device of the steam turbine.
  • the angle ⁇ has preferably a value between 40° and 50°.
  • the two parts 4, 5 are fixed to each other by fixating devices 8.
  • the fixating devices 8 are bolts.
  • the advantage of such an inlet volute 1 is that because of the specific arrangement of the split plane 3 und therefore of the fixating devices 8, the inlet volute 1 can be build very small, especially in the horizontal and vertical direction.
  • the fixating devices 8 are placed at a very in inconspicuous position.
  • the outer casing which surrounds the inlet volute 1
  • the outer casing which surrounds the inlet volute 1
  • the special arrangement of the split plane 3 and therefore of the fixating devices 8 can save space to keep the dimensions of the outer turbine casing 2 down.
  • Between the two parts 4, 5 of the inlet volute 1 can be a special sealing.
  • the inlet volute 1 supplies steam 7 evenly over the circumference of the first turbine stage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP09000798A 2009-01-21 2009-01-21 Einlassspiralgehäuse für eine Dampfturbine und Dampfturbine Withdrawn EP2211022A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09000798A EP2211022A1 (de) 2009-01-21 2009-01-21 Einlassspiralgehäuse für eine Dampfturbine und Dampfturbine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09000798A EP2211022A1 (de) 2009-01-21 2009-01-21 Einlassspiralgehäuse für eine Dampfturbine und Dampfturbine

Publications (1)

Publication Number Publication Date
EP2211022A1 true EP2211022A1 (de) 2010-07-28

Family

ID=40934896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000798A Withdrawn EP2211022A1 (de) 2009-01-21 2009-01-21 Einlassspiralgehäuse für eine Dampfturbine und Dampfturbine

Country Status (1)

Country Link
EP (1) EP2211022A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103769541A (zh) * 2014-01-23 2014-05-07 中国人民解放军总参谋部第六十研究所 蜗壳中心分模成型方法及其成型工装
CN108928013A (zh) * 2018-07-12 2018-12-04 台州市中冠模业有限公司 一种变截面螺旋壳体模具
CN109268074A (zh) * 2018-07-19 2019-01-25 哈尔滨汽轮机厂有限责任公司 一种带360°蜗壳进汽式内缸的低压核电汽轮机
CN111140360A (zh) * 2019-11-27 2020-05-12 西安航天动力研究所 一种燃气涡轮导管及其成型方法
CN112922678A (zh) * 2021-02-03 2021-06-08 东方电气集团东方汽轮机有限公司 一种用于汽轮机的轴向出汽的进汽室

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2295223A1 (fr) * 1974-12-16 1976-07-16 Bbc Brown Boveri & Cie Turbomachine thermique, en particulier turbine a vapeur basse pression
EP0128343A1 (de) * 1983-06-09 1984-12-19 BBC Aktiengesellschaft Brown, Boveri & Cie. Zweigehäuseturbine mit mindestens einem Ventil für horizontale Dampfzuführung
EP1033478A2 (de) * 1999-03-02 2000-09-06 ABB Alstom Power (Schweiz) AG Gehäuse für eine thermische Turbomaschine
JP2005315122A (ja) * 2004-04-27 2005-11-10 Toshiba Corp 蒸気タービン

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2295223A1 (fr) * 1974-12-16 1976-07-16 Bbc Brown Boveri & Cie Turbomachine thermique, en particulier turbine a vapeur basse pression
EP0128343A1 (de) * 1983-06-09 1984-12-19 BBC Aktiengesellschaft Brown, Boveri & Cie. Zweigehäuseturbine mit mindestens einem Ventil für horizontale Dampfzuführung
EP1033478A2 (de) * 1999-03-02 2000-09-06 ABB Alstom Power (Schweiz) AG Gehäuse für eine thermische Turbomaschine
JP2005315122A (ja) * 2004-04-27 2005-11-10 Toshiba Corp 蒸気タービン

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103769541A (zh) * 2014-01-23 2014-05-07 中国人民解放军总参谋部第六十研究所 蜗壳中心分模成型方法及其成型工装
CN103769541B (zh) * 2014-01-23 2017-02-01 中国人民解放军总参谋部第六十研究所 蜗壳中心分模成型方法及其成型工装
CN108928013A (zh) * 2018-07-12 2018-12-04 台州市中冠模业有限公司 一种变截面螺旋壳体模具
CN108928013B (zh) * 2018-07-12 2023-12-01 台州市中冠模业有限公司 一种变截面螺旋壳体模具
CN109268074A (zh) * 2018-07-19 2019-01-25 哈尔滨汽轮机厂有限责任公司 一种带360°蜗壳进汽式内缸的低压核电汽轮机
CN111140360A (zh) * 2019-11-27 2020-05-12 西安航天动力研究所 一种燃气涡轮导管及其成型方法
CN112922678A (zh) * 2021-02-03 2021-06-08 东方电气集团东方汽轮机有限公司 一种用于汽轮机的轴向出汽的进汽室

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