JP5546816B2 - 蒸気タービンエンジンの低圧セクション用の蒸気タービン回転動翼 - Google Patents
蒸気タービンエンジンの低圧セクション用の蒸気タービン回転動翼 Download PDFInfo
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- JP5546816B2 JP5546816B2 JP2009205404A JP2009205404A JP5546816B2 JP 5546816 B2 JP5546816 B2 JP 5546816B2 JP 2009205404 A JP2009205404 A JP 2009205404A JP 2009205404 A JP2009205404 A JP 2009205404A JP 5546816 B2 JP5546816 B2 JP 5546816B2
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- Prior art keywords
- flat portion
- steam turbine
- cover
- blade
- flat
- Prior art date
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- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000007704 transition Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
-
- 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
- F01D5/142—Shape, i.e. outer, aerodynamic form of the blades of successive rotor or stator blade-rows
- F01D5/143—Contour of the outer or inner working fluid flow path wall, i.e. shroud or hub contour
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
本発明の1つの実施形態による動翼20は、蒸気タービンの低圧セクションのL2段で使用するのが好ましい。しかしながら、この動翼はまた、その他の段又はその他のセクション(例えば、高い又は中間の)でも同様に使用することができる。上述のように、動翼20における1つの好ましい動翼長さは、約10.56インチ(26.82cm)である。この動翼長さは、約20.09平方フィート(1.87m2)のL2段出口環状空間面積をもたらすことができる。この拡大かつ改良型の出口環状空間面積は、蒸気がL2段動翼から出る時に該蒸気が受ける運動エネルギー損失を減少させることができる。このより少ない損失により、タービン効率の向上が得られる。
12 ロータ
14 シャフト
18 ロータホイール
20 回転動翼
22 静翼
24 蒸気
26 入口
30 正圧側面
32 負圧側面
34 前縁
36 後縁
38 半径方向長さ
40 ダブテール部
41 グルーブ
42 翼形部
43 ダブテール軸方向幅
44 根元部
46 先端部
48 カバー
50 カバーと先端部との間のフィレット半径
52 カバーの第1の平坦部
54 カバーの第2の平坦部
56 陥凹部
58 ロータセクションとダブテール部との間のフィレット半径
60 プラットフォーム
62 カバーが前縁から離れた所定の距離まで延びる位置
64 非接触面
66 接触面
68 ギャップ
Claims (10)
- 翼形部(42)と、
前記翼形部(42)の一端部に取付けられた根元部(44)と、
前記根元部(44)から突出しかつ斜め軸方向挿入式ダブテール(40)を含むダブテール部(40)と、
前記根元部(44)と反対側の端部において前記翼形部(42)に取付けられた先端部(46)と、
前記先端部(46)の一部として一体形に形成されたカバー(48)と
を含む蒸気タービン回転動翼(20)であって、前記カバー(48)が、第1の平坦部(52)と、第2の平坦部(54)と、第1の平坦部(52)及び第2の平坦部(54)間に横方向に設置された陥凹部(56)とを含み、前記陥凹部(56)が、前記第1の平坦部(52)及び該陥凹部(56)が隣接する第1の端部において第1の平坦部(52)より下方に設置され、前記陥凹部(56)が、前記第2の平坦部(54)及び該陥凹部(56)が隣接する第2の端部において第2の平坦部(54)まで上方に立ち上がり、前記第2の平坦部(54)が、前記第1の平坦部(52)より上方に***している、蒸気タービン回転動翼(20)。 - 該動翼(20)が、20.09平方フィート(1.87m2)以上の出口環状空間面積を含む、請求項1記載の蒸気タービン回転動翼(20)。
- 該動翼(20)が、1500回転/分〜3600回転/分の範囲にある作動速度を有する、請求項1又は請求項2記載の蒸気タービン回転動翼(20)。
- 前記カバー(48)が、該動翼(20)の前縁(34)より所定の距離だけ離れた前記先端部(46)に沿った位置から該動翼(20)の後縁(36)まで延びる、請求項1乃至請求項3のいずれか1項記載の蒸気タービン回転動翼(20)。
- 前記カバー(48)が、該蒸気タービン回転動翼(20)の段における隣接カバー(48)と接触状態にならないように構成された非接触面(64)と、該蒸気タービン動翼(20)の段における前記隣接カバー(48)と接触状態になるように構成された接触面(66)とを含み、前記非接触面(64)が、前記第1の平坦部(52)、第2の平坦部(54)及び陥凹部(56)の一部分を含み、前記接触面(66)が、前記第2の平坦部(54)の一部分を含む、請求項1乃至請求項4のいずれか1項記載の蒸気タービン回転動翼(20)。
- タービンロータ(18)の周りに配置された複数の後段蒸気タービン動翼(20)を含む蒸気タービン(10)の低圧タービンセクションであって、前記複数の後段蒸気タービン動翼(20)の各々が、
10.56インチ(26.82cm)以上の長さを有する翼形部(42)と、
前記翼形部(42)の一端部に取付けられた根元部(44)と、
前記根元部(44)から突出しかつ斜め軸方向挿入式ダブテール(40)を含むダブテール部(40)と、
前記根元部(44)と反対側の端部において前記翼形部(42)に取付けられた先端部(46)と、
前記先端部(46)の一部として一体形に形成されたカバー(48)と
を含んでおり、前記カバー(48)が、第1の平坦部(52)と、第2の平坦部(54)と、第1の平坦部(52)及び第2の平坦部(54)間に横方向に設置された陥凹部(56)とを含み、前記陥凹部(56)が、前記第1の平坦部(52)及び該陥凹部(56)が隣接する第1の端部において第1の平坦部(52)より下方に設置され、前記陥凹部(56)が、前記第2の平坦部(54)及び該陥凹部(56)が隣接する第2の端部において第2の平坦部(54)まで上方に立ち上がり、前記第2の平坦部(54)が、前記第1の平坦部(52)より上方に***している、低圧タービンセクション。 - 前記複数の後段蒸気タービン動翼(20)が、20.09平方フィート(1.87m2)以上の出口環状空間面積を含む、請求項6記載の低圧タービンセクション。
- 前記複数の後段蒸気タービン動翼(20)が、1500回転/分〜3600回転/分の範囲にある作動速度を有する、請求項6又は請求項7記載の低圧タービンセクション。
- 前記複数の後段蒸気タービン動翼(20)のカバー(48)が、該カバー(48)間に公称ギャップ(68)を備えた状態で組立てられる、請求項6乃至請求項8のいずれか1項記載の低圧タービンセクション。
- 前記公称ギャップ(68)が、−0.002インチ(−0.051mm)〜0.008インチ(0.203mm)の範囲にある、請求項9記載の低圧タービンセクション。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/205,938 | 2008-09-08 | ||
US12/205,938 US8057187B2 (en) | 2008-09-08 | 2008-09-08 | Steam turbine rotating blade for a low pressure section of a steam turbine engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010065692A JP2010065692A (ja) | 2010-03-25 |
JP5546816B2 true JP5546816B2 (ja) | 2014-07-09 |
Family
ID=41479074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009205404A Active JP5546816B2 (ja) | 2008-09-08 | 2009-09-07 | 蒸気タービンエンジンの低圧セクション用の蒸気タービン回転動翼 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8057187B2 (ja) |
EP (1) | EP2161409B1 (ja) |
JP (1) | JP5546816B2 (ja) |
RU (1) | RU2506430C2 (ja) |
Families Citing this family (8)
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US10072510B2 (en) | 2014-11-21 | 2018-09-11 | General Electric Company | Variable pitch fan for gas turbine engine and method of assembling the same |
FR3032941B1 (fr) * | 2015-02-24 | 2017-03-10 | Snecma | Soufflante non carenee de turbomachine d'aeronef |
US10100653B2 (en) | 2015-10-08 | 2018-10-16 | General Electric Company | Variable pitch fan blade retention system |
US10808535B2 (en) * | 2018-09-27 | 2020-10-20 | General Electric Company | Blade structure for turbomachine |
EP3862571A1 (en) * | 2020-02-06 | 2021-08-11 | ABB Schweiz AG | Fan, synchronous machine and method for producing a fan |
US11674435B2 (en) | 2021-06-29 | 2023-06-13 | General Electric Company | Levered counterweight feathering system |
US11795964B2 (en) | 2021-07-16 | 2023-10-24 | General Electric Company | Levered counterweight feathering system |
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-
2008
- 2008-09-08 US US12/205,938 patent/US8057187B2/en active Active
-
2009
- 2009-08-28 EP EP09168948.9A patent/EP2161409B1/en active Active
- 2009-09-07 RU RU2009133263/06A patent/RU2506430C2/ru not_active IP Right Cessation
- 2009-09-07 JP JP2009205404A patent/JP5546816B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
JP2010065692A (ja) | 2010-03-25 |
US20100061856A1 (en) | 2010-03-11 |
EP2161409B1 (en) | 2020-03-18 |
EP2161409A2 (en) | 2010-03-10 |
RU2009133263A (ru) | 2011-03-20 |
RU2506430C2 (ru) | 2014-02-10 |
EP2161409A3 (en) | 2017-06-14 |
US8057187B2 (en) | 2011-11-15 |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |