JP5143389B2 - 翼端漏れ損失低減のための蒸気冷却型ガスタービン動翼 - Google Patents
翼端漏れ損失低減のための蒸気冷却型ガスタービン動翼 Download PDFInfo
- Publication number
- JP5143389B2 JP5143389B2 JP2006250275A JP2006250275A JP5143389B2 JP 5143389 B2 JP5143389 B2 JP 5143389B2 JP 2006250275 A JP2006250275 A JP 2006250275A JP 2006250275 A JP2006250275 A JP 2006250275A JP 5143389 B2 JP5143389 B2 JP 5143389B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- thermal barrier
- tip
- barrier coating
- gas turbine
- 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
- F01D5/20—Specially-shaped blade tips to seal space between tips and stator
-
- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/12—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part
- F01D11/122—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator using a rubstrip, e.g. erodible. deformable or resiliently-biased part with erodable or abradable material
-
- 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
- F01D5/288—Protective coatings for blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
10 動翼
12 エーロフォイル部分
14 圧力面
16 吸込面
18 外側の翼端
20 翼端キャップ
22 遮熱コーティング
30 コーティング材料
34 湾曲した面
41 リッジ
44 吸込側
26、28 リッジ
24、32 キャビティ
36、50 吸込側
38、52 圧力側
40、46、54 エーロフォイル
Claims (7)
- 閉ループ蒸気冷却回路を有するとともに半径方向外側の翼端キャップ(20)を有するエーロフォイル部分(12)を備えるガスタービン用の第1ステージ蒸気冷却型動翼(10)であって、前記半径方向外側の翼端キャップ(20)が遮熱コーティング(22)で被覆されており、該遮熱コーティングの厚さの減少した領域によって画成されるキャビティ(24,32)が前記半径方向外側の翼端キャップ(20)の少なくとも中心部に設けられていて、該キャビティ(24,32)が前記エーロフォイル部分の吸込側(16)又は圧力側(14)のいずれかのみに沿ってリッジ(42)を形成している、動翼(10)。
- 前記キャビティ(24,32)が、6〜30ミル(0.15〜0.76mm)の深さを有する、請求項1記載の動翼。
- 前記キャビティ(24,32)の中心での遮熱コーティング(22)の最小厚さが30ミル(0.76mm)である、請求項1又は請求項2記載の動翼。
- 第1ステージ蒸気冷却型ガスタービン動翼(10)の半径方向外側の翼端(18)の翼端漏れ損失を低減する方法であって、
(a)閉ループ蒸気冷却回路を有するとともに半径方向外側の翼端キャップ(20)を有するエーロフォイル部分(12)を備える第1ステージ蒸気冷却型ガスタービン動翼(10)を準備する段階と、
(b)前記動翼(10)の半径方向外側の翼端キャップ(20)全体を第1の厚さの遮熱コーティング(30)でコーティングする段階と、
(c)前記遮熱コーティング(30)の前記第1の厚さを機械加工又は研磨によって減少させることにより、遮熱コーティングの厚さの減少した領域によって画成されるキャビティ(24,32)が前記翼端キャップ(20)の少なくとも中心部に形成されるとともに前記エーロフォイル部分の吸込側(16)又は圧力側(14)のいずれかのみに沿ってリッジ(42)が形成されるように、前記遮熱コーティング(22)を再表面仕上げする段階と
を含む方法。 - 前記遮熱コーティング(30)の前記第1の厚さが60〜110ミル(1.5〜2.8mm)である、請求項4記載の方法。
- 前記キャビティ(24,32)が、6〜30ミル(0.15〜0.76mm)の深さを有する、請求項4又は請求項5記載の方法。
- 前記キャビティ(24,32)の中心での遮熱コーティング(22)の最小厚さが30ミル(0.76mm)である、請求項4乃至請求項6のいずれか1項の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/228,241 US7922455B2 (en) | 2005-09-19 | 2005-09-19 | Steam-cooled gas turbine bucker for reduced tip leakage loss |
US11/228,241 | 2005-09-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007085344A JP2007085344A (ja) | 2007-04-05 |
JP5143389B2 true JP5143389B2 (ja) | 2013-02-13 |
Family
ID=37216163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006250275A Expired - Fee Related JP5143389B2 (ja) | 2005-09-19 | 2006-09-15 | 翼端漏れ損失低減のための蒸気冷却型ガスタービン動翼 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7922455B2 (ja) |
EP (1) | EP1764478A3 (ja) |
JP (1) | JP5143389B2 (ja) |
CN (1) | CN1936275B (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080317597A1 (en) * | 2007-06-25 | 2008-12-25 | General Electric Company | Domed tip cap and related method |
GB201017797D0 (en) * | 2010-10-21 | 2010-12-01 | Rolls Royce Plc | An aerofoil structure |
US8662849B2 (en) * | 2011-02-14 | 2014-03-04 | General Electric Company | Component of a turbine bucket platform |
US8807955B2 (en) * | 2011-06-30 | 2014-08-19 | United Technologies Corporation | Abrasive airfoil tip |
US9151169B2 (en) * | 2012-03-29 | 2015-10-06 | General Electric Company | Near-flow-path seal isolation dovetail |
US9186757B2 (en) * | 2012-05-09 | 2015-11-17 | Siemens Energy, Inc. | Method of providing a turbine blade tip repair |
CN102680144B (zh) * | 2012-05-21 | 2014-04-02 | 东南大学 | 汽轮机中间分隔轴封漏汽率对机组热耗率影响的测算方法 |
US9464536B2 (en) | 2012-10-18 | 2016-10-11 | General Electric Company | Sealing arrangement for a turbine system and method of sealing between two turbine components |
US20150308276A1 (en) * | 2012-12-17 | 2015-10-29 | General Electric Company | Robust turbine blades |
CN103541777B (zh) * | 2013-11-05 | 2015-05-06 | 南京航空航天大学 | 用于叶轮机械的叶片式无泄漏封严结构 |
US20150300180A1 (en) * | 2014-04-22 | 2015-10-22 | United Technologies Corporation | Gas turbine engine turbine blade tip with coated recess |
US10876415B2 (en) | 2014-06-04 | 2020-12-29 | Raytheon Technologies Corporation | Fan blade tip as a cutting tool |
US20160237831A1 (en) * | 2015-02-12 | 2016-08-18 | United Technologies Corporation | Abrasive blade tip with improved wear at high interaction rate |
US20160237832A1 (en) * | 2015-02-12 | 2016-08-18 | United Technologies Corporation | Abrasive blade tip with improved wear at high interaction rate |
US10107108B2 (en) | 2015-04-29 | 2018-10-23 | General Electric Company | Rotor blade having a flared tip |
US10047613B2 (en) | 2015-08-31 | 2018-08-14 | General Electric Company | Gas turbine components having non-uniformly applied coating and methods of assembling the same |
US10544698B2 (en) | 2016-06-20 | 2020-01-28 | United Technologies Corporation | Air seal abrasive coating and method |
US11078588B2 (en) | 2017-01-09 | 2021-08-03 | Raytheon Technologies Corporation | Pulse plated abrasive grit |
US10995623B2 (en) * | 2018-04-23 | 2021-05-04 | Rolls-Royce Corporation | Ceramic matrix composite turbine blade with abrasive tip |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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US4390320A (en) * | 1980-05-01 | 1983-06-28 | General Electric Company | Tip cap for a rotor blade and method of replacement |
US4589823A (en) * | 1984-04-27 | 1986-05-20 | General Electric Company | Rotor blade tip |
JPS62186004A (ja) * | 1986-02-10 | 1987-08-14 | Toshiba Corp | 軸流タ−ビン |
US4802828A (en) * | 1986-12-29 | 1989-02-07 | United Technologies Corporation | Turbine blade having a fused metal-ceramic tip |
US5603603A (en) * | 1993-12-08 | 1997-02-18 | United Technologies Corporation | Abrasive blade tip |
EP0661415A1 (de) | 1993-12-17 | 1995-07-05 | Sulzer Innotec Ag | Einrichtung mit rotierfähigem Körper, Gehäuse und dazwischen liegendem Dichtspalt |
US5584663A (en) * | 1994-08-15 | 1996-12-17 | General Electric Company | Environmentally-resistant turbine blade tip |
DE4432998C1 (de) | 1994-09-16 | 1996-04-04 | Mtu Muenchen Gmbh | Anstreifbelag für metallische Triebwerkskomponente und Herstellungsverfahren |
JP3453268B2 (ja) * | 1997-03-04 | 2003-10-06 | 三菱重工業株式会社 | ガスタービン翼 |
JPH11247612A (ja) * | 1998-03-02 | 1999-09-14 | Mitsubishi Heavy Ind Ltd | 動翼のチップシンニング |
DE19824583A1 (de) | 1998-06-02 | 1999-12-09 | Abb Patent Gmbh | Turbinenschaufel |
US6755619B1 (en) | 2000-11-08 | 2004-06-29 | General Electric Company | Turbine blade with ceramic foam blade tip seal, and its preparation |
JP2002227606A (ja) * | 2001-02-02 | 2002-08-14 | Mitsubishi Heavy Ind Ltd | タービン動翼先端部シール構造 |
US6461107B1 (en) | 2001-03-27 | 2002-10-08 | General Electric Company | Turbine blade tip having thermal barrier coating-formed micro cooling channels |
US6502304B2 (en) | 2001-05-15 | 2003-01-07 | General Electric Company | Turbine airfoil process sequencing for optimized tip performance |
US6616410B2 (en) | 2001-11-01 | 2003-09-09 | General Electric Company | Oxidation resistant and/or abrasion resistant squealer tip and method for casting same |
US6991430B2 (en) | 2003-04-07 | 2006-01-31 | General Electric Company | Turbine blade with recessed squealer tip and shelf |
-
2005
- 2005-09-19 US US11/228,241 patent/US7922455B2/en not_active Expired - Fee Related
-
2006
- 2006-09-14 EP EP06254794A patent/EP1764478A3/en not_active Withdrawn
- 2006-09-15 JP JP2006250275A patent/JP5143389B2/ja not_active Expired - Fee Related
- 2006-09-18 CN CN2006101399014A patent/CN1936275B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1936275B (zh) | 2012-10-31 |
US20070224049A1 (en) | 2007-09-27 |
CN1936275A (zh) | 2007-03-28 |
EP1764478A2 (en) | 2007-03-21 |
JP2007085344A (ja) | 2007-04-05 |
EP1764478A3 (en) | 2008-10-29 |
US7922455B2 (en) | 2011-04-12 |
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