EP2699765A1 - Dampfturbinengehäuse - Google Patents
DampfturbinengehäuseInfo
- Publication number
- EP2699765A1 EP2699765A1 EP12729476.7A EP12729476A EP2699765A1 EP 2699765 A1 EP2699765 A1 EP 2699765A1 EP 12729476 A EP12729476 A EP 12729476A EP 2699765 A1 EP2699765 A1 EP 2699765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam turbine
- webs
- web
- housing wall
- transition
- 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
Links
- 230000007704 transition Effects 0.000 claims abstract description 33
- 238000010276 construction Methods 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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
- F01D25/24—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
- F01D25/243—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
- 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
-
- 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
- F01D25/30—Exhaust heads, chambers, or the like
Definitions
- the invention relates to a steam turbine housing and a steam turbine with the steam turbine housing.
- a generator for generating electricity is provided, which is for example driven by a fluid energy machine.
- the fluid energy machine is a steam turbine or a gas turbine, which is used in combination with a steam turbine.
- the power plant with the pure steam turbine drive steam power plant, DK
- DK steam power plant
- GUD gas and steam power plant
- the steam turbine for the combined cycle power plant is characterized in that it is exposed to a high cyclic load, with a removal is not provided on the steam turbine.
- the cyclic loading of the steam turbine is low, wherein a removal is provided on the steam turbine. Therefore, the combined cycle steam turbine is designed differently than the DKW steam turbine.
- the inner housing is designed as a welded construction. Due to the different strength requirements and design with regard to the removal to be provided in the case of the DKW steam turbine, the inner casing for the combined cycle steam turbine is designed differently than the inner casing for the DKW steam turbine.
- a stiffening pan is conventionally provided at the removal point of the inner housing for the DKW steam turbine. Such a stiffening tray need not be provided in the inner housing for a combined cycle steam turbine, since the combined cycle steam turbine is not equipped with a removal.
- the object of the invention is to provide a steam turbine housing which is suitable both for a combined cycle steam turbine and for a steam turbine DKW.
- the steam turbine housing according to the invention has a housing ⁇ wall, on the inside of a stiffening trough is ⁇ introduced , the two axially juxtaposed, circumferential and from the housing wall radially inwardly projecting
- Inner webs between which parallel and axially centrally extending on the inside of the housing wall, a center web is mounted, the radially inner edge is straight, so that this meets with its longitudinal ends on the housing wall, whereby the circumferential extent of the center web is defined, wherein at the radially inboard edge of the with ⁇ tenstegs this is Y-shaped forked inwardly in two crossing webs, which in each case up to the adjacent inner web extend and pass into them so that the inner webs outside of the circumferential extent of the transition webs as well as within directly to the circumferential extent of the transition webs via the transition webs and the central web are attached to the housing wall.
- the stiffening tub has a high cyclic load capacity.
- the steam turbine housing according to the invention can be used with its stiffening trough not only in a DKW steam turbine, but also in a combined cycle steam turbine in which the stiffening trough is exposed to a high cyclic load.
- the steam turbine housing can be made usable for the DKW steam turbine by, for example, fitting feed-in stubs to the steam turbine housing.
- the feed nozzles are preferably arranged in the region of the middle web.
- the "Neuter housing” suitable for the two steam turbine types.
- the "Neutrumgeophuse” a geometry that corresponds to a conventional combined cycle Dampfturbinenge ⁇ housing has, and is equipped with the inventive stiffening tub.
- the steam turbine casing can then be without modification and therefore incorporated directly into a combined cycle steam turbine. If the turbine housing A downstream DKW steam turbine has to be mounted on the steam turbine housing only by means of the downstream conversion, The downstream conversion is low in effort compared with the effort that would be incurred if both for the combined cycle steam turbine and for DKW-steam turbine to produce separate steam turbine casing and held in.
- the inventive steam turbine casing the advantage that the Dampfturbinenge ⁇ housing can be manufactured in a higher number, since the turbine housing for both the combined cycle steam turbine and for the DKW Steam turbine geei gnet is. tub is equipped with its construction according to the invention so that it can withstand the high cyclic loads in a combined cycle steam turbine.
- the inner edge of the central web has a break point from which straight edge portions of the inner edge extend to the housing wall.
- the inner edge of the web portion has preferably at the inflection point a concave course, the present at the inflection point Sprei wetting angle of the edge portions before Trains t ⁇ between 150 ° and 155 °.
- the tangential extension of the center land from the break point corresponds to 12 times to 20 times the radial extent of the center land at the break point.
- the radial extent of the transition webs in the inflection point preferably corresponds to three times to seven times the radial extent of the center web at the break point.
- the ratio of the thicknesses of the transition webs to the housing wall thickness is between 0.8 to 1.2.
- the transition webs on the inner edge of the center web preferably have an opening angle between 68 ° and 85 °.
- the stiffening trough preferably has two axially juxtaposed, circumferential and from the housing wall radially inwardly projecting outer webs between which parallel and axially centrally extending the inner webs vorgese ⁇ hen, the outer webs are inclined to the inner webs out in the axial direction. Furthermore, it is preferred that the inner webs are inclined parallel to their adjacent outer webs in the axial direction.
- FIG. 2 shows a cross-section BB in Figure 1 of the exemplary form of the inventive steam turbine ⁇ housing
- FIGS. 3, 4 are three-dimensional sectional views of a DKW
- Figure 5 nengetude and steam turbines
- Figure 6 is a three-dimensional sectional view of a conventional steam turbine casing.
- Steam turbine housing 1 a housing wall 2 on. At the steam turbine housing 1 a nozzle 3 is provided. On the inside of the housing wall 2, a stiffening trough 4 is attached, which is formed circumferentially symmetrical.
- the stiffening trough 4 has a first outer web 5 and a second outer web 6, wherein the outer webs 5, 6 form the axial boundary of the stiffening trough 4.
- the outer webs 5, 6 are attached to the inside of the housing wall 2 and project radially inwards into the steam turbine housing 1.
- the stiffening trough 4 has a first inner web 7 and a second inner web 8, wherein the Inner webs extend over the circumference of the steam turbine housing 1 and are arranged between the outer webs 5, 6.
- the inner webs 7, 8 are like the outer webs 5, 6 radially inwardly into the steam turbine housing 1, wherein the inner radius of the outer webs 5, 6 and the inner webs 7, 8 is the same.
- a perforated belt 9 with a plurality of holes 10 is likewise provided on the second outer web 6 and the second inner web 8.
- the inner webs 7, 8 are arranged at an axial distance from one another, which is bridged by a plurality of tie rods 11 arranged over the circumference.
- the outer webs 5, 6 are arranged inclined relative to each other, seen radially inwardly, wherein the outer webs 5, 6 have a theorystegnenswinkel 12.
- the first inner web 7 is parallel to the first outer web 5 and the second inner web 8 is arranged inclined parallel to the second outer web 6, so that the inner webs 7, 8 have an inner web inclination angle 13.
- the outer web 12 and the inclination angle of inner ⁇ web taper angle 13 equal in their amounts.
- the inner webs 7, 8 each have a stiffening segment 14, which has a stiffening segment angle 15, which is between 90 ° and 180 °, here 120 °. Outside the stiffening segment 14, the inner webs 7, 8 are fastened to the housing wall 2. Within the stiffening segment 14, the stiffening trough 4 has a central web 16, which is arranged centrally between the inner webs 7, 8 and is fastened on the inside to the housing wall 2 and projects radially inwards from the latter. Radially on the inside, the middle web 16 forks radially inward in a Y-shape and merges into a first transition web 21 and a second transition web 22, the transition webs 21, 22 having a center opening angle 17. shut down. The center opening angle 17 is between 68 ° and 85 °.
- the central web 16 has a circumferential extent and sweeps over the center segment angle 18, which lies between 30 ° and 90 °, here at 70 °.
- the middle web 16 has a break point 35, from which a first edge section 36 and a second edge section 37 extend.
- the center web 16 has a radially inner edge 34, which is formed by the first edge portion 36 and the second edge portion 37.
- the edge portions 36, 37 form the radially inner boundary of the center web 16, wherein the edge portions 36, 37 are straight.
- the edge portions 36, 37 form secants, which are arranged symmetrically about the radial direction of the break point 35.
- the edge portions 36, 37 have in the buckling point 35 to each other a spread angle 23, which is smaller than 180 °. This results from the edge portions 36, 37 on the inner edge of the central web 16 a concave course over the circumference.
- the center web 16 has a middle web height 19 and the edge portions 36, 37 an extension perpendicular to the radial direction of the break point 35 as a middle web width 20.
- the ratio of the center web width 20 to the center web height 19 is between 12 and 20.
- the transition webs 21, 22 extend radially inwardly from the edge sections 36, 37 of the center web 16 and are inclined toward one another by the center web opening angle 17 and merge into the inner webs 7, 8, the first transition web 21 into the first inner web 7 and the second Transition ridge 22 merges into the second inner web 8. Seen radially at the point of inflection 35, the height of the transition webs 21, 22 is a transition web height 24, wherein the ratio of the transition web height 24 to the center web height 19 is between 4 and 8.
- a first Shaping edge 25 is formed and from the second edge ⁇ section 37 is formed by the transitional webs 21, 22 on the inner webs 7, 8, a second intersection edge 26.
- the edge portions 36, 37 are straight trained det, the transition webs 21, 22 plate-like out forms ⁇ , wherein the transition webs 21, 22 to spreading angle 23 have sym ⁇ metric buckling at the bending point 35th Due to the fact that the transition webs 21, 22 merge into the inner webs 7, 8 at the intersecting edges 25, 26, the intersecting edges 25, 26 are arcuate.
- the housing wall 2 has a housing wall thickness 27 and the transition webs 21, 22 have a transition web thickness 28, wherein the ratio of the transition web thickness 28 to the housing wall thickness 27 is between 0.8 and 1.2.
- FIG. 6 shows a conventional steam turbine housing 101 with a housing wall 102.
- a nozzle 103 is attached to the steam turbine housing 101.
- a stiffening trough 104 is provided radially on the inside of the housing wall 102.
- the stiffening trough 104 has a first outer web 105, a second outer web 106, a first inner web 107 and a second inner web 108.
- the outer webs 105, 106 and the inner webs 107, 108 are mutually parallel to the housing wall 102 circumferentially and secured to this radially inside.
- a perforated belt 109 having a plurality of circumferential holes 110 is provided in each case.
- the inner webs 107, 108 are arranged at an axial distance from one another, which is bridged by a plurality of tie rods 111 arranged uniformly over the circumference.
- the Outer webs 105, 106 and the inner webs 107, 108 are zueinan ⁇ parallel and at right angles to the housing wall 102.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12729476T PL2699765T3 (pl) | 2011-07-15 | 2012-06-14 | Obudowa turbiny parowej |
EP12729476.7A EP2699765B1 (de) | 2011-07-15 | 2012-06-14 | Dampfturbinengehäuse |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11174163A EP2546473A1 (de) | 2011-07-15 | 2011-07-15 | Dampfturbinengehäuse |
PCT/EP2012/061264 WO2013010727A1 (de) | 2011-07-15 | 2012-06-14 | Dampfturbinengehäuse |
EP12729476.7A EP2699765B1 (de) | 2011-07-15 | 2012-06-14 | Dampfturbinengehäuse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2699765A1 true EP2699765A1 (de) | 2014-02-26 |
EP2699765B1 EP2699765B1 (de) | 2016-05-18 |
Family
ID=46354233
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11174163A Withdrawn EP2546473A1 (de) | 2011-07-15 | 2011-07-15 | Dampfturbinengehäuse |
EP12729476.7A Active EP2699765B1 (de) | 2011-07-15 | 2012-06-14 | Dampfturbinengehäuse |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11174163A Withdrawn EP2546473A1 (de) | 2011-07-15 | 2011-07-15 | Dampfturbinengehäuse |
Country Status (6)
Country | Link |
---|---|
US (1) | US9447699B2 (de) |
EP (2) | EP2546473A1 (de) |
JP (1) | JP5727101B2 (de) |
CN (1) | CN103649473B (de) |
PL (1) | PL2699765T3 (de) |
WO (1) | WO2013010727A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106499447B (zh) * | 2016-12-22 | 2018-03-06 | 东方电气集团东方汽轮机有限公司 | 一种汽轮机低压进汽结构 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4557113A (en) | 1984-06-15 | 1985-12-10 | Westinghouse Electric Corp. | Single low pressure turbine with zoned condenser |
US4863341A (en) * | 1988-05-13 | 1989-09-05 | Westinghouse Electric Corp. | Turbine having semi-isolated inlet |
US5174120A (en) | 1991-03-08 | 1992-12-29 | Westinghouse Electric Corp. | Turbine exhaust arrangement for improved efficiency |
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 |
JP2004150357A (ja) | 2002-10-30 | 2004-05-27 | Toshiba Corp | 蒸気タービン |
US6971842B2 (en) * | 2003-09-22 | 2005-12-06 | General Electric Company | Low pressure steam turbine exhaust hood |
JP2006017015A (ja) | 2004-06-30 | 2006-01-19 | Toshiba Corp | 蒸気タービン |
JP4557787B2 (ja) | 2005-04-28 | 2010-10-06 | 株式会社東芝 | 蒸気タービン |
DE102008000284A1 (de) | 2007-03-02 | 2008-09-04 | Alstom Technology Ltd. | Dampfturbine |
DE102008043605B4 (de) | 2007-11-16 | 2015-05-07 | Alstom Technology Ltd. | Verfahren zur Herstellung eines Turbinengehäuses |
JP4991600B2 (ja) * | 2008-02-29 | 2012-08-01 | 株式会社東芝 | 蒸気タービン |
US8403628B2 (en) | 2009-12-16 | 2013-03-26 | General Electric Company | Low-pressure steam turbine hood and inner casing supported on curb foundation |
-
2011
- 2011-07-15 EP EP11174163A patent/EP2546473A1/de not_active Withdrawn
-
2012
- 2012-06-14 WO PCT/EP2012/061264 patent/WO2013010727A1/de active Application Filing
- 2012-06-14 CN CN201280035174.0A patent/CN103649473B/zh active Active
- 2012-06-14 US US14/131,477 patent/US9447699B2/en active Active
- 2012-06-14 EP EP12729476.7A patent/EP2699765B1/de active Active
- 2012-06-14 PL PL12729476T patent/PL2699765T3/pl unknown
- 2012-06-14 JP JP2014519476A patent/JP5727101B2/ja active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013010727A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP5727101B2 (ja) | 2015-06-03 |
CN103649473A (zh) | 2014-03-19 |
US20140161608A1 (en) | 2014-06-12 |
US9447699B2 (en) | 2016-09-20 |
JP2014521003A (ja) | 2014-08-25 |
CN103649473B (zh) | 2015-06-17 |
EP2699765B1 (de) | 2016-05-18 |
PL2699765T3 (pl) | 2017-04-28 |
WO2013010727A1 (de) | 2013-01-24 |
EP2546473A1 (de) | 2013-01-16 |
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