JP5550651B2 - 蒸気タービンの最終段のためのブレード配列 - Google Patents
蒸気タービンの最終段のためのブレード配列 Download PDFInfo
- Publication number
- JP5550651B2 JP5550651B2 JP2011528282A JP2011528282A JP5550651B2 JP 5550651 B2 JP5550651 B2 JP 5550651B2 JP 2011528282 A JP2011528282 A JP 2011528282A JP 2011528282 A JP2011528282 A JP 2011528282A JP 5550651 B2 JP5550651 B2 JP 5550651B2
- Authority
- JP
- Japan
- Prior art keywords
- cover plate
- blade
- protrusion
- steam turbine
- rotating blade
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000003628 erosive effect Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Images
Classifications
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- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
- F01D5/225—Blade-to-blade connections, e.g. for damping vibrations by shrouding
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
-
- 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
- F05D2230/00—Manufacture
- F05D2230/40—Heat treatment
- F05D2230/41—Hardening; Annealing
-
- 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
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/121—Fluid guiding means, e.g. vanes related to the leading edge of a stator vane
-
- 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
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
特許文献3は、カバープレートを一体化した、蒸気タービンの最終段ブレードを開示しており、ブレードの後端は、ねじり力によって、隣接するブレードの前端と接触している。そのために、後端は、それぞれ半径方向に対して階段状に構成されている。
特許文献4は、カバープレートを一体化し、そのカバープレートに、ブレード部分を水滴から防護する役割を果たすフィンを備えた最終段ブレードを開示している。
2 ブレード基底部
3 ブレードシート
4 被圧側
5 吸気側
6 前端
6’ カバープレートの吸気側部分
6'' カバープレートの被圧側部分
7 後端
8 カバープレート
9 吸気側のカバープレート凹み面
10 ブレード
13 ブレードシート
14 被圧側
15 吸気側
16 前端
16’ カバープレートの吸気側部分
16'' カバープレートの被圧側部分
17 後端
18 カバープレート
19 吸気側のカバープレート凹み面
20 突起部
21 窪み
22 後方側面
α 円周方向と前端から突起部の最高点までの線との間の角度
A タービン回転軸に対して平行な軸方向
B 前端の最大に延びる部分と突起部の最大に延びる部分とを通る線
C 円周方向、回転方向
Emax 突起部の軸方向に最大に延びる部分
W 水滴の経路
W0 大きい水滴のフロー経路
W1 小さい水滴のフロー経路
rt1 後端の張り出し部分におけるカバープレートの半径方向のサイズ
rt2 突起部におけるカバープレートの半径方向のサイズ
Claims (6)
- ブレード(10)の各々にカバープレート(18)が一体化された、蒸気タービンの最終段のための回転するブレード配列において、
各ブレード(10)の前端(16)近傍に設けられ、その配列内の各ブレード(10)のカバープレート(18)が、それぞれ被圧側(14)に、フロー方向に関して後方のブレードの吸気側のカバープレート凹み面(19)を少なくとも一部の水滴に対して防護するための突起部(20)を有することを特徴とする回転するブレード配列。 - 突起部(20)が、カバープレート(18)の被圧側から蒸気タービンの回転軸に対して平行な軸方向(A)に突き出ていることを特徴とする請求項1に記載の回転するブレード配列。
- 突起部(20)は、カバープレート(18)の吸気側と被圧側との間のカバープレートの質量バランスが保証されるように、カバープレート(18)から突き出す形でブレードの後端(17)に配置されていることを特徴とする請求項1に記載の回転するブレード配列。
- 突起部(20)は、カバープレート(18)の前端(16)の側の半分の部分内に配置されていることを特徴とする請求項3に記載の回転するブレード配列。
- ブレード(10)の前端(16)と突起部(20)の蒸気タービンの回転軸に対して平行な軸方向(A)に最大に延びる部分(Emax )との間に、窪み(21)が有ることを特徴とする請求項2に記載の回転するブレード配列。
- 突起部(20)の半径方向のサイズ(rt2 )が、ブレード(10)の後端(17)の領域におけるカバープレート(18)の半径方向のサイズ(rt1 )よりも大きいことを特徴とする請求項1に記載の回転するブレード配列。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH01540/08 | 2008-09-29 | ||
CH01540/08A CH699598A1 (de) | 2008-09-29 | 2008-09-29 | Schaufelreihe für die Endstufe einer Dampfturbine. |
PCT/EP2009/061602 WO2010034614A1 (de) | 2008-09-29 | 2009-09-08 | Schaufelreihe für endstufe einer dampfturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012504203A JP2012504203A (ja) | 2012-02-16 |
JP5550651B2 true JP5550651B2 (ja) | 2014-07-16 |
Family
ID=40352014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011528282A Active JP5550651B2 (ja) | 2008-09-29 | 2009-09-08 | 蒸気タービンの最終段のためのブレード配列 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8425193B2 (ja) |
JP (1) | JP5550651B2 (ja) |
CN (1) | CN102165141B (ja) |
CH (1) | CH699598A1 (ja) |
DE (1) | DE112009002266B4 (ja) |
WO (1) | WO2010034614A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9121285B2 (en) * | 2012-05-24 | 2015-09-01 | General Electric Company | Turbine and method for reducing shock losses in a turbine |
ES2579065T3 (es) | 2012-12-21 | 2016-08-04 | Mtu Aero Engines Gmbh | Álabe de turbina con anillo de refuerzo y diente de corte |
CN103742203B (zh) * | 2014-02-11 | 2016-04-27 | 上海电气电站设备有限公司 | 汽轮机末级长叶片 |
US10934847B2 (en) | 2016-04-14 | 2021-03-02 | Mitsubishi Power, Ltd. | Steam turbine rotor blade, steam turbine, and method for manufacturing steam turbine rotor blade |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3751182A (en) * | 1971-08-20 | 1973-08-07 | Westinghouse Electric Corp | Guide vanes for supersonic turbine blades |
DE3413628C2 (de) * | 1983-04-25 | 1996-09-19 | Gen Electric | Spaltdichtung für eine Dampfturbine |
DE20023475U1 (de) * | 1999-08-18 | 2004-05-06 | Kabushiki Kaisha Toshiba, Kawasaki | Laufschaufelvorrichtung für eine Turbine |
JP2001055902A (ja) * | 1999-08-18 | 2001-02-27 | Toshiba Corp | タービン動翼 |
JP4123129B2 (ja) * | 2003-10-28 | 2008-07-23 | 株式会社日立製作所 | タービン動翼 |
US7097428B2 (en) * | 2004-06-23 | 2006-08-29 | General Electric Company | Integral cover bucket design |
JP4765882B2 (ja) * | 2006-10-05 | 2011-09-07 | 株式会社日立製作所 | 蒸気タービン動翼 |
-
2008
- 2008-09-29 CH CH01540/08A patent/CH699598A1/de not_active Application Discontinuation
-
2009
- 2009-09-08 DE DE200911002266 patent/DE112009002266B4/de active Active
- 2009-09-08 WO PCT/EP2009/061602 patent/WO2010034614A1/de active Application Filing
- 2009-09-08 JP JP2011528282A patent/JP5550651B2/ja active Active
- 2009-09-08 CN CN200980138192.XA patent/CN102165141B/zh active Active
-
2011
- 2011-03-24 US US13/071,235 patent/US8425193B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2010034614A1 (de) | 2010-04-01 |
CH699598A1 (de) | 2010-03-31 |
CN102165141B (zh) | 2014-06-18 |
DE112009002266A5 (de) | 2011-07-28 |
US8425193B2 (en) | 2013-04-23 |
JP2012504203A (ja) | 2012-02-16 |
CN102165141A (zh) | 2011-08-24 |
US20110268574A1 (en) | 2011-11-03 |
DE112009002266B4 (de) | 2015-05-13 |
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