JP5069072B2 - タービンブレード並びにタービンブレード冷却システム及び方法 - Google Patents
タービンブレード並びにタービンブレード冷却システム及び方法 Download PDFInfo
- Publication number
- JP5069072B2 JP5069072B2 JP2007255374A JP2007255374A JP5069072B2 JP 5069072 B2 JP5069072 B2 JP 5069072B2 JP 2007255374 A JP2007255374 A JP 2007255374A JP 2007255374 A JP2007255374 A JP 2007255374A JP 5069072 B2 JP5069072 B2 JP 5069072B2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- wall
- extending
- recessed
- shelf
- 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.)
- Expired - Fee Related
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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
- 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
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/187—Convection cooling
-
- 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
- F01D5/20—Specially-shaped blade tips to seal space between tips and stator
-
- 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
- F05D2260/00—Function
- F05D2260/20—Heat transfer, e.g. cooling
- F05D2260/202—Heat transfer, e.g. cooling by film cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
14 ステータシュラウド
16 ロータブレード
20 燃焼ガス
22 翼形部
24 先端
26 根元
28 ダブテール
30 プラットフォーム
31 外側壁
32 第1の側面(正圧)
34 第2の側面(負圧)
36 前縁
38 後縁
40 冷却回路
42 冷却空気
50 先端キャップ
52 先端壁
54 陥凹部分
60 先端シェルフ
64 先端シェルフ孔
66 接合部
70 先端壁開口
72 中心軸線
76 出口
82 平坦頂面
86 基部
88 半径方向最外側領域
90 第1の半径(外側面)
92 外側面
94 第2の半径(内側面)
96 内側面
102 冷却孔
104 冷却孔
106 冷却孔
108 先端キャップ供給孔
C 先端間隙
角度A 中心線傾斜についての鋭角
矢印D 渦流の図示
距離E 平坦頂面からの先端壁開口の半径方向距離
Claims (10)
- 根元(26)から半径方向外向きに延びかつその前縁(36)から後縁(38)まで横方向に延びる正圧及び負圧側面(32、34)を備えた外側壁(31)を含む翼形部(22)と、
前記正圧及び負圧側面間でかつ前記前縁及び後縁間で延びる先端キャップ(50)と、
前記先端キャップから外向きに延びかつ前記外側壁の正圧側面から内寄りに陥凹して該外側壁との間に先端シェルフ(60)を形成した陥凹先端壁部分(54)を含む先端壁(52)と、
前記翼形部内で延びかつ部分的に前記先端キャップが境界となった内部冷却回路(40)と、
前記内部冷却回路と流れ連通状態で前記先端シェルフを貫通して延びる少なくとも1つの先端シェルフ孔(64)と、
前記内部冷却回路と流れ連通状態で前記先端シェルフの半径方向外側の前記陥凹先端壁部分を貫通して該陥凹先端壁部分の外側面(92)まで延びる少なくとも1つの先端壁開口(70)と、
を含むことを特徴とするタービンブレード(16)。 - 前記内部冷却回路と流れ連通状態で前記先端シェルフの半径方向外側の前記陥凹先端壁部分を貫通して延びる複数の先端壁開口(70)を有する、請求項1記載のタービンブレード。
- 前記少なくとも1つの先端壁開口が、中心線(72)と関連付けられ、前記中心線が、半径方向に延びる線に対して鋭角で配向される、請求項1又は請求項2のいずれか1項記載のタービンブレード。
- 前記陥凹先端壁部分が、その基部(86)における最大壁厚さから該基部から半径方向に配置された位置における最小壁厚さまでテーパしている、請求項1、請求項2又は請求項3のいずれか1項記載のタービンブレード。
- 前記複数の先端壁開口の各々が、前記複数の先端シェルフ孔の各々と千鳥状配置の関係で配置される、請求項2、請求項3又は請求項4のいずれか1項記載のタービンブレード。
- 翼形部外側壁の正圧側面(32)から内寄りに陥凹した先端壁(52)の陥凹先端壁部分(54)と前記翼形部外側壁(31)との間に形成された先端シェルフ(60)を貫通して延びる少なくとも1つの先端シェルフ孔を通して、翼形部の内部冷却回路(40)から冷却空気を送る段階と、
前記陥凹先端壁部分を貫通して該陥凹先端壁部分の外側面(92)まで延びる少なくとも1つの先端壁開口(70)を通して、前記内部冷却回路から冷却空気を送る段階と、を含み、
前記少なくとも1つの先端壁開口を通して送られる冷却空気が、前記少なくとも1つの先端シェルフ孔を通して送られる冷却空気が高温燃焼ガスストリーム(20)と合流しかつ混合する場所の下流で、該高温燃焼ガスストリームと合流しかつ混合する、
ことを特徴とする冷却方法。 - 前記高温燃焼ガスストリーム内に対流冷却渦効果を形成させて、前記少なくとも1つの先端シェルフ孔及び少なくとも1つの先端壁開口からの冷却空気が該高温燃焼ガスストリームと合流しかつ混合した後に、該ガスストリームの少なくとも一部分を先端領域内で再循環させるようにする段階をさらに含む、請求項6記載の方法。
- 翼形部(22)の内部冷却回路(40)と、
前記内部冷却回路と流れ連通状態で、先端キャップ(50)から外向きに延びる先端壁(52)の陥凹先端壁部分(54)と前記翼形部の外側壁との間に形成された先端シェルフ(60)を貫通して延びる少なくとも1つの先端シェルフ孔(64)と、
前記内部冷却回路と流れ連通状態で前記陥凹先端壁部分を貫通して該陥凹先端壁部分の外側面(92)まで延びる少なくとも1つの先端壁開口(70)と、
を含むことを特徴とする冷却システム。 - 前記内部冷却回路と流れ連通状態で前記先端シェルフを貫通して延びる複数の先端シェルフ孔(64)と、
前記内部冷却回路と流れ連通状態で前記陥凹先端壁部分を貫通して延びる複数の先端壁開口(70)と、
をさらに含む、請求項8記載のシステム。 - 前記先端壁開口が、前記先端シェルフ孔の回路に対して千鳥状配置の関係で配置される、請求項9記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/606,731 US7857587B2 (en) | 2006-11-30 | 2006-11-30 | Turbine blades and turbine blade cooling systems and methods |
US11/606,731 | 2006-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008138665A JP2008138665A (ja) | 2008-06-19 |
JP5069072B2 true JP5069072B2 (ja) | 2012-11-07 |
Family
ID=38562869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007255374A Expired - Fee Related JP5069072B2 (ja) | 2006-11-30 | 2007-09-28 | タービンブレード並びにタービンブレード冷却システム及び方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7857587B2 (ja) |
EP (1) | EP1927727B1 (ja) |
JP (1) | JP5069072B2 (ja) |
CN (1) | CN101191424B (ja) |
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2006
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-
2007
- 2007-09-25 EP EP07117102.9A patent/EP1927727B1/en not_active Expired - Fee Related
- 2007-09-28 CN CN200710161323.9A patent/CN101191424B/zh active Active
- 2007-09-28 JP JP2007255374A patent/JP5069072B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN101191424B (zh) | 2014-03-19 |
US7857587B2 (en) | 2010-12-28 |
EP1927727A3 (en) | 2013-07-31 |
US20080131278A1 (en) | 2008-06-05 |
CN101191424A (zh) | 2008-06-04 |
EP1927727B1 (en) | 2016-04-20 |
EP1927727A2 (en) | 2008-06-04 |
JP2008138665A (ja) | 2008-06-19 |
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