EP1630359A1 - Dampfturbine mit zwei Dampfräumen - Google Patents

Dampfturbine mit zwei Dampfräumen Download PDF

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Publication number
EP1630359A1
EP1630359A1 EP04019959A EP04019959A EP1630359A1 EP 1630359 A1 EP1630359 A1 EP 1630359A1 EP 04019959 A EP04019959 A EP 04019959A EP 04019959 A EP04019959 A EP 04019959A EP 1630359 A1 EP1630359 A1 EP 1630359A1
Authority
EP
European Patent Office
Prior art keywords
housing
steam
steam turbine
turbine according
partial surfaces
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Withdrawn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
EP04019959A
Other languages
German (de)
English (en)
French (fr)
Inventor
Max Wiesenberger
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 EP04019959A priority Critical patent/EP1630359A1/de
Priority to EP05777733A priority patent/EP1781901B1/de
Priority to US11/660,638 priority patent/US8221063B2/en
Priority to AT05777733T priority patent/ATE519924T1/de
Priority to CN2005800343922A priority patent/CN101057062B/zh
Priority to PCT/EP2005/053954 priority patent/WO2006021513A1/de
Priority to PL05777733T priority patent/PL1781901T3/pl
Publication of EP1630359A1 publication Critical patent/EP1630359A1/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Withdrawn legal-status Critical Current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
    • F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
    • F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
    • F01D1/023—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines the working-fluid being divided into several separate flows ; several separate fluid flows being united in a single flow; the machine or engine having provision for two or more different possible fluid flow paths
    • 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
    • F01D25/246—Fastening of diaphragms or stator-rings
    • 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
    • F05D2240/00—Components
    • F05D2240/10—Stators
    • F05D2240/14—Casings or housings protecting or supporting assemblies within
    • 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
    • F05D2250/30—Arrangement of components
    • F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05D2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
    • 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
    • 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
    • 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
    • F05D2250/52—Outlet

Definitions

  • the invention relates to a steam turbine with two steam chambers, which are surrounded by a substantially tubular housing and separated from each other by at least one partition wall arranged in the housing.
  • the partitions which separate the steam rooms from each other, must be easy to produce while still withstand the pressure occurring permanently.
  • the connections must be designed with cross-sectional areas which, in accordance with the quantities of fluid to be led through the steam chambers, are often comparatively large.
  • the outer surfaces of the individual steam rooms are in part only relatively narrow strips, on which there is not enough space for arranging said connections.
  • the invention has for its object to provide a generic steam turbine to which results in the partitions particularly low thermal stresses, but at the same time is made very compact.
  • the object is achieved according to the invention with a steam turbine mentioned above, in which the partition wall is designed from at least two planar partial surfaces, which are designed inclined relative to each other.
  • the dividing wall to be provided in a housing of a steam turbine is not designed solely as a flat or curved surface, but rather folds or creases are specifically formed in the dividing wall, against which planar partial surfaces adjoin one another.
  • the walls folded in this way can actually be produced by a folding process or by joining two planar pieces, for example by welding.
  • the dividing walls according to the invention and in particular their flat part surfaces expand uniformly without any particular shape change and no additional stresses are generated on the associated housing.
  • the wrinkles further lead to a stiffening of the walls and allow, as will be explained in more detail below, a more flexible distribution of the steam rooms.
  • a flat partial surface of a partition wall can be extended out of the actual housing region and therefore form part of a wall of a connecting piece on the housing. This results in a more favorable introduction of external support forces in the housing structure.
  • the folds according to the invention are particularly advantageously designed as straight folding edges, on which partial surfaces adjoin one another.
  • Such straight folding edges can be produced inexpensively by simple buckling or by welding straight plate edges.
  • the partial surfaces designed according to the invention with folded edges adjoin one another at folded edges, which are arranged asymmetrically relative to a longitudinal axis of the tubular housing. This ensures that the partitions according to the invention are constructed in particular not rotationally symmetrical. Such a design is particularly advantageous with regard to the thermal expansion stresses resulting from temperature retention.
  • a dividing wall according to the invention which is particularly cost-effective to develop and produce is characterized in that it is designed with a central partial surface, on which several further partial surfaces distributed over the circumference join, which are inclined to the central partial surface. While the central partial surface for separating the steam chambers is provided directly on a rotor rotating in the housing, the further partial surfaces distributed around this central partial surface can be arranged differently inclined depending on the space requirement in the respective steam chambers and on the surrounding tubular housing. At the same time result comparatively simple folding and / or joint edges.
  • partition walls according to the invention Further standardization of the partition walls according to the invention and a reduction of costs associated therewith is possible by connecting inclined partial surfaces which are of equal size distributed over the circumference of the central partial surface.
  • the above-mentioned asymmetrical shape of the partitions according to the invention can be achieved particularly advantageously by three inclined faces.
  • These three inclined partial surfaces may, for example, advantageously be arranged on one side of a substantially rectangular central partial surface, wherein the central partial surface is designed to continue even on the fourth side of the substantially rectangular basic shape until the housing is continued.
  • the central surface is oriented substantially perpendicular to a longitudinal axis of the tubular housing and thus perpendicular to a rotor rotating in the housing.
  • the invention proposes that in a generic steam turbine at least two connections for steam on the housing are designed such that one of Vapor spaces starting from an associated connection into the housing has decreasing cross-sectional areas or widths while the vapor space located beyond the partition wall has in the direction of an associated connection out of the housing enlarging cross-sectional areas or widths.
  • the decreasing cross-sectional areas are therefore arranged directly next to increasing cross-sectional areas and thus lead to a total of a particularly compact and space-saving design of such a steam turbine according to the invention.
  • sufficient space for the placement of terminals can be created by the inventive design of parting surfaces on the outer sides of the housing.
  • the cross-sectional profiles along the flow paths in the individual steam chambers can be designed in accordance with the area requirement which, for example, decreases at an inlet with increasing distance from the inlet nozzle.
  • the area with a small area requirement of a vapor space is adjacent to the area with a large area requirement of the adjacent vapor space. This results in a comparatively short length of the tubular housing with a particularly favorable space utilization.
  • a tubular housing 12 and dividing walls 14a-d arranged therein are illustrated by a steam turbine 10.
  • the housing 12 is substantially tubular in shape along a longitudinal axis 16 and has on its outside a steam inlet 18 in the form of a nozzle. On the outside of the housing 12 further vapor outlets 20 and 22 are arranged, which serve as taps for branching preheating.
  • the housing 12 is divided with a total of four partitions 14a, 14b, 14c and 14d in five steam rooms 24a to 24e, in which the steam inlet 18 opens into the steam chamber 24c, from the steam chambers 24b and 24d each have a "small" steam outlet 20 and from the Steam rooms 24a and 24e each lead out two "large” steam outlets 22.
  • the flow of steam through the housing 12 is guided in the region of the steam chambers 24b and 24d by a respective pipe section 30, with which the partitions 14a and 14b or 14c and 14d are connected to each other in the region of the associated openings 26 ,
  • the steam turbine 10 is designed to be particularly compact in the axial direction and thus a particularly inexpensive to realize short distance between associated (not shown) bearings of the steam turbine rotor is achieved and also the housing 12 and the partitions 14 with temperature changes to the steam turbine 10 is not excessively large strain voltages are subjected
  • the partitions 14 are each formed of individual flat faces 32 which are arranged inclined to the longitudinal axis 16 by a respective central part surface 34. The thus on the central part surface 34 radially outer surface portions 32 each border at straight folding edges 36 to the central part surface 34th
  • the outer partial surfaces 32 of the vapor space 24 c are inclined on the side of the steam inlet 18 in such a way that the steam inlet 18 has cross-sectional widths or areas which decrease in the housing 12.
  • the outer partial surfaces 32 of the partition walls 14b and 14c are inclined to each other such that the cross-sectional widths or areas of the vapor space 24c decrease further with increasing distance from the steam inlet 18.
  • the central partial surfaces 34 of the partition walls 14b and 14c are aligned perpendicular to the longitudinal axis 16.
  • FIG. 6 it can also be seen that the central partial surfaces 34 of the partition walls 14b and 14c are each continued laterally from the steam inlet 18 to the housing 12 and no folding edges are provided there.
  • the partitions 14a and 14d are each designed as "shells" which three outer inclined inclined surfaces 32 are formed on a central part surface 34.
  • the outer partial surfaces 32 of the partition walls 14a and 14d are each inclined in the axial direction to the front side openings 28 of the associated steam chambers 24a and 24e.
  • the upper outer partial surface 32 of the partition walls 14a and 14d extends in each case substantially parallel to the upper outer partial surfaces 32 of the partition walls 14b and 14c (see also FIG. 1, upper half).
  • lower portion of the partitions 14 is by the mutually inclined outer faces 32 of the partitions 14b and 14c and perpendicular to the longitudinal axis 16 to bottom extending central face 34 of the partitions 14a and 14d, a widening of the steam chambers 24b and 24d in the direction reached on the "small" steam outlets 20.
  • an overall increase in the cross-sectional areas of the annular vapor spaces 24b and 24d bounded towards the center by the tube section 30 in the direction of the vapor outlets 20 results from top to bottom.
  • two steam outlets 22 are provided at the bottom. These steam outlets 22 lie in a region of the steam chambers 24a and 24e, respectively, where the steam chambers 24a and 24e are particularly wide in the axial direction because of the shape of the partitions 14a and 14d. In contrast, in the upper and lateral regions, the steam chambers 24a and 24e are comparatively narrow because of the three outer partial surfaces 32 grouped around the central partial surface 34 on the partition walls 14a and 14d.
  • access openings or manholes 38 are formed on the housing 12 just above the parting line of the lower part, which due to the selected shape of the partitions 14 has a particularly easy access and good access to the areas to be machined inside allow the housing 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP04019959A 2004-08-23 2004-08-23 Dampfturbine mit zwei Dampfräumen Withdrawn EP1630359A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP04019959A EP1630359A1 (de) 2004-08-23 2004-08-23 Dampfturbine mit zwei Dampfräumen
EP05777733A EP1781901B1 (de) 2004-08-23 2005-08-11 Dampfturbine mit zwei dampfräumen
US11/660,638 US8221063B2 (en) 2004-08-23 2005-08-11 Steam turbine with two steam chambers
AT05777733T ATE519924T1 (de) 2004-08-23 2005-08-11 Dampfturbine mit zwei dampfräumen
CN2005800343922A CN101057062B (zh) 2004-08-23 2005-08-11 有两个蒸汽腔室的汽轮机
PCT/EP2005/053954 WO2006021513A1 (de) 2004-08-23 2005-08-11 Dampfturbine mit zwei dampfräumen
PL05777733T PL1781901T3 (pl) 2004-08-23 2005-08-11 Turbina parowa z dwiema przestrzeniami parowymi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04019959A EP1630359A1 (de) 2004-08-23 2004-08-23 Dampfturbine mit zwei Dampfräumen

Publications (1)

Publication Number Publication Date
EP1630359A1 true EP1630359A1 (de) 2006-03-01

Family

ID=34926264

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04019959A Withdrawn EP1630359A1 (de) 2004-08-23 2004-08-23 Dampfturbine mit zwei Dampfräumen
EP05777733A Not-in-force EP1781901B1 (de) 2004-08-23 2005-08-11 Dampfturbine mit zwei dampfräumen

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05777733A Not-in-force EP1781901B1 (de) 2004-08-23 2005-08-11 Dampfturbine mit zwei dampfräumen

Country Status (6)

Country Link
US (1) US8221063B2 (zh)
EP (2) EP1630359A1 (zh)
CN (1) CN101057062B (zh)
AT (1) ATE519924T1 (zh)
PL (1) PL1781901T3 (zh)
WO (1) WO2006021513A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102444426B (zh) 2010-09-30 2015-05-27 阿尔斯通技术有限公司 改装汽轮机的方法
US20130078089A1 (en) * 2011-09-26 2013-03-28 General Electric Company Steam turbine single shell extraction lp casing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232993A (en) * 1977-06-13 1980-11-11 Hitachi, Ltd. Low pressure casing for a steam turbine
US5123812A (en) * 1990-09-12 1992-06-23 Westinghouse Electric Corp. Apparatus for aligning a blade ring in a steam turbine
JP2000356110A (ja) * 1999-06-15 2000-12-26 Mitsubishi Heavy Ind Ltd 蒸気タービンの蒸気入出口圧損低減構造
JP2004100482A (ja) * 2002-09-05 2004-04-02 Mitsubishi Heavy Ind Ltd 低圧蒸気タービン

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1273633A (en) * 1917-11-14 1918-07-23 Ljungstrom Angturbin Ab Reversible radial-flow turbine.
CH564680A5 (zh) * 1973-10-16 1975-07-31 Bbc Brown Boveri & Cie
CH578680A5 (zh) * 1974-11-18 1976-08-13 Bbc Brown Boveri & Cie
JPS5531413A (en) * 1978-08-25 1980-03-05 Toshiba Corp Moisture separator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232993A (en) * 1977-06-13 1980-11-11 Hitachi, Ltd. Low pressure casing for a steam turbine
US5123812A (en) * 1990-09-12 1992-06-23 Westinghouse Electric Corp. Apparatus for aligning a blade ring in a steam turbine
JP2000356110A (ja) * 1999-06-15 2000-12-26 Mitsubishi Heavy Ind Ltd 蒸気タービンの蒸気入出口圧損低減構造
JP2004100482A (ja) * 2002-09-05 2004-04-02 Mitsubishi Heavy Ind Ltd 低圧蒸気タービン

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Also Published As

Publication number Publication date
CN101057062B (zh) 2010-05-26
US20090116957A1 (en) 2009-05-07
PL1781901T3 (pl) 2012-01-31
ATE519924T1 (de) 2011-08-15
CN101057062A (zh) 2007-10-17
US8221063B2 (en) 2012-07-17
WO2006021513A1 (de) 2006-03-02
EP1781901B1 (de) 2011-08-10
EP1781901A1 (de) 2007-05-09

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