EP1163426B1 - Turbomaschinenschaufel - Google Patents
Turbomaschinenschaufel Download PDFInfo
- Publication number
- EP1163426B1 EP1163426B1 EP00908907A EP00908907A EP1163426B1 EP 1163426 B1 EP1163426 B1 EP 1163426B1 EP 00908907 A EP00908907 A EP 00908907A EP 00908907 A EP00908907 A EP 00908907A EP 1163426 B1 EP1163426 B1 EP 1163426B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- hole
- edge
- turbomachine
- pressure side
- 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 - Lifetime
Links
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
- F01D5/12—Blades
- F01D5/22—Blade-to-blade connections, e.g. for damping vibrations
-
- 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
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
-
- 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
- F01D5/24—Blade-to-blade connections, e.g. for damping vibrations using wire or the like
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/50—Vibration damping features
Definitions
- the invention relates to a turbomachine blade provided with a damper wire hole according to the preamble of claim 1.
- the contact area. the damper wire during operation of the turbomachine to the damper wire hole is, by the distance between the boundary planes of the Reinforcements defined. This distance, or the length of the contact area is chosen so that both a sufficient static and dynamic Strength is guaranteed.
- each Bead has an annular surface which is rounded into the hole.
- the annular surfaces are preferably parallel for easier machining aligned with each other, or even parallel to the surface of the suction side or aligned parallel to the surface of the pressure side of the blade, as shown in FIG Fig. 2 of the patent is shown.
- the invention seeks to avoid all these disadvantages. Its the task to improve the efficiency of a turbomachinery blade, which having a reinforced hole for receiving a damping element.
- this is achieved in that in a device according to the preamble of claim 1, the raised end surfaces of the hole towards reinforced edge region of the airfoil with a to the leading edge of the Airfoil open, acute angle ⁇ and / or with a to the blade tip open, acute angle ⁇ are formed.
- the two acute angles ⁇ and ⁇ are in a range of 5 ° to 30 ° trained. It has been found that in such a configuration particularly slight disturbances of the flow in the region of the damping elements occur.
- Fig. 1 turbomachinery blade designed as a blade 1 turbomachinery blade consists of a blade root 2, a platform 3 and a blade 4.
- the platforms of adjacent turbine blades of the turbine wheel, not shown lie directly against each other and thus form the inner boundary of the Flow channel, which outwardly from a likewise not shown Shovel cover is completed.
- the airfoil 4 has an entry edge 5, an outlet edge 6, a suction side 7 and a pressure side 8 and has a blade tip 9.
- the blade 4 is a continuous from the suction side 7 to the pressure side 8 Hole 10 is arranged for receiving a damper wire, not shown, which reduces the blade vibrations occurring during operation.
- the blade is also formed with a hole 10 towards the reinforced edge region 11, wherein the edge region 11 on both the suction side 7 and on the pressure side 11 has a relation to the airfoil 4 raised end surface 12, 13 has.
- the end faces 12, 13 are provided with a leading edge 5 of the blade 4 open, acute angle ⁇ of about 10 ° and with an open to the blade tip 9, formed acute angle ⁇ of about 20 ° (Fig. 2, Fig. 3).
- both end surfaces 12, 13 of the reinforced edge portion 11 converge in FIG Direction of the trailing edge 6 of the airfoil 4 and in the direction of the blade root 2 such that the reinforcement of the outlet side and the blade foot side Part of the edge region 11 is formed significantly smaller than the Reinforcement of the entrance side and the blade tip side part of the edge region 11th
- This design of the airfoil 4 in the region of the hole 10 has an improved Flow guidance during operation of the turbocharger or the exhaust gas turbine result.
- this is experienced in a main flow direction 14 am Airfoil 4 along flowing working medium due to, as described above, at an acute angle to each other arranged end surfaces 12, 13 a significantly lower Disturbance as is the case with the solutions of the prior art.
- by virtue of the improved flow guidance in the region of the turbine wheel can higher efficiency of the turbocharger and thus ultimately with this Connected internal combustion engine can be achieved.
- angles ⁇ and ⁇ between the end surfaces 12, 13 of the reinforced edge portion 11 advantageously in one Range of 5 ° to 30 ° are formed.
- end surfaces 12, 13 may also be only one of the two acute angles ⁇ , ⁇ (not shown), which simplifies the production, but one represents certain efficiency waiver.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Description
- Fig. 1
- eine saugseitige Seitenansicht der Laufschaufel;
- Fig. 2
- einen Schnitt durch die Laufschaufel, entlang der Linie II-II in Fig. 1;
- Fig. 3
- einen Schnitt durch die Laufschaufel, entlang der Linie III-III in Fig. 1.
- 1
- Turbomaschinenschaufel, Laufschaufel
- 2
- Schaufelfuss
- 3
- Plattform
- 4
- Schaufelblatt
- 5
- Eintrittskante
- 6
- Austrittskante
- 7
- Saugseite
- 8
- Druckseite
- 9
- Schaufelspitze
- 10
- Loch
- 11
- Randbereich
- 12
- Endfläche
- 13
- Endfläche
- 14
- Hauptströmungsrichtung
Claims (3)
- Turbomaschinenschaufel mit Schaufelblatt, welches eine Eintrittskante (5), eine Austrittskante (6), eine Saugseite (7), eine Druckseite (8) sowie eine Schaufelspitze (9) aufweist und mit einem durchgehenden Loch (10) zur Aufnahme eines Dämpfungselementes für die Schaufelschwingungen ausgestattet ist, wobei das Schaufelblatt (4) mit einem zum Loch (10) hin verstärkten Randbereich (11) ausgebildet ist und der Randbereich (11) sowohl auf der Saugseite (7) als auch auf der Druckseite (8) eine erhabene Endfläche (12, 13) besitzt, dadurch gekennzeichnet, dass die Endflächen (12, 13) mit einem zur Eintrittskante (5) des Schaufelblattes (4) offenen, spitzen Winkel (α) und/oder mit einem zur Schaufelspitze (9) offenen, spitzen Winkel (β) ausgebildet sind.
- Turbomaschinenschaufel nach Anspruch 1, dadurch gekennzeichnet, dass der Winkel α in einem Grössenbereich von 5° ≤ α ≤ 30° ausgebildet ist.
- Turbomaschinenschaufel nach Anspruch 1, dadurch gekennzeichnet, dass der Winkel β in einem Grössenbereich von 5° ≤ β ≤ 30° ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19913265A DE19913265A1 (de) | 1999-03-24 | 1999-03-24 | Turbomaschinenschaufel |
DE19913265 | 1999-03-24 | ||
PCT/CH2000/000171 WO2000057030A1 (de) | 1999-03-24 | 2000-03-23 | Turbomaschinenschaufel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1163426A1 EP1163426A1 (de) | 2001-12-19 |
EP1163426B1 true EP1163426B1 (de) | 2003-06-18 |
Family
ID=7902195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00908907A Expired - Lifetime EP1163426B1 (de) | 1999-03-24 | 2000-03-23 | Turbomaschinenschaufel |
Country Status (8)
Country | Link |
---|---|
US (1) | US6520741B1 (de) |
EP (1) | EP1163426B1 (de) |
JP (1) | JP4531268B2 (de) |
KR (1) | KR100718859B1 (de) |
CN (1) | CN1171005C (de) |
DE (2) | DE19913265A1 (de) |
TW (1) | TW440654B (de) |
WO (1) | WO2000057030A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2928174B1 (fr) | 2008-02-28 | 2011-05-06 | Snecma | Aube avec plateforme non axisymetrique : creux et bosse sur extrados. |
KR101324249B1 (ko) * | 2011-12-06 | 2013-11-01 | 삼성테크윈 주식회사 | 스퀼러 팁이 형성된 블레이드를 구비한 터빈 임펠러 |
US20140215998A1 (en) * | 2012-10-26 | 2014-08-07 | Honeywell International Inc. | Gas turbine engines with improved compressor blades |
WO2015085078A1 (en) * | 2013-12-05 | 2015-06-11 | United Technologies Corporation | Hollow blade having internal damper |
DE102014223231B4 (de) | 2014-11-13 | 2017-09-07 | MTU Aero Engines AG | Turbomaschinenschaufelanordnung |
GB201511416D0 (en) | 2015-06-30 | 2015-08-12 | Napier Turbochargers Ltd | Turbomachinery rotor blade |
US11428106B2 (en) | 2017-09-20 | 2022-08-30 | Sulzer Management Ag | Assembly of vane units |
CN107514292A (zh) * | 2017-09-30 | 2017-12-26 | 南京赛达机械制造有限公司 | 一种抗扭断汽轮机叶片 |
CN114396315B (zh) * | 2021-12-27 | 2024-08-02 | 哈尔滨工程大学 | 一种带有混合式冷却-密封结构的锯齿冠涡轮叶片 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE393333C (de) | 1924-04-01 | Karl Imfeld Dipl Ing | Schaufelung fuer Turbinen | |
FR1252766A (fr) | 1959-12-18 | 1961-02-03 | Alsthom Cgee | Entretoises pour aubes de turbines |
JPS5035602B1 (de) * | 1970-09-14 | 1975-11-18 | ||
JPS50158705A (de) * | 1974-06-17 | 1975-12-22 | ||
JPS5395406A (en) * | 1977-02-02 | 1978-08-21 | Hitachi Ltd | Connection structure for vane |
FR2381905A1 (fr) * | 1977-02-24 | 1978-09-22 | Snecma | Perfectionnement aux ailettes mobiles de turbine |
CH622313A5 (de) * | 1977-09-14 | 1981-03-31 | Bbc Brown Boveri & Cie | |
JPS6045285B2 (ja) * | 1978-02-01 | 1985-10-08 | 株式会社日立製作所 | 動翼連結装置 |
JPS5832904A (ja) * | 1981-08-20 | 1983-02-26 | Toshiba Corp | 蒸気タ−ビン翼 |
JPS5919902U (ja) * | 1982-07-29 | 1984-02-07 | 株式会社東芝 | 蒸気タ−ビン羽根 |
JPS6278404A (ja) * | 1985-09-30 | 1987-04-10 | Toshiba Corp | 蒸気タ−ビン翼の補強構造 |
DE4229769A1 (de) * | 1992-09-05 | 1994-03-10 | Asea Brown Boveri | Dämpfungselement für Turbinenschaufeln |
US5267834A (en) * | 1992-12-30 | 1993-12-07 | General Electric Company | Bucket for the last stage of a steam turbine |
-
1999
- 1999-03-24 DE DE19913265A patent/DE19913265A1/de not_active Withdrawn
-
2000
- 2000-03-21 TW TW089105124A patent/TW440654B/zh not_active IP Right Cessation
- 2000-03-23 WO PCT/CH2000/000171 patent/WO2000057030A1/de active IP Right Grant
- 2000-03-23 EP EP00908907A patent/EP1163426B1/de not_active Expired - Lifetime
- 2000-03-23 US US09/937,316 patent/US6520741B1/en not_active Expired - Lifetime
- 2000-03-23 JP JP2000606875A patent/JP4531268B2/ja not_active Expired - Fee Related
- 2000-03-23 CN CNB008054312A patent/CN1171005C/zh not_active Expired - Fee Related
- 2000-03-23 DE DE50002590T patent/DE50002590D1/de not_active Expired - Lifetime
- 2000-03-23 KR KR1020017011799A patent/KR100718859B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2002540335A (ja) | 2002-11-26 |
CN1171005C (zh) | 2004-10-13 |
DE50002590D1 (de) | 2003-07-24 |
CN1359445A (zh) | 2002-07-17 |
WO2000057030A1 (de) | 2000-09-28 |
KR100718859B1 (ko) | 2007-05-16 |
US6520741B1 (en) | 2003-02-18 |
JP4531268B2 (ja) | 2010-08-25 |
KR20020004969A (ko) | 2002-01-16 |
DE19913265A1 (de) | 2000-09-28 |
TW440654B (en) | 2001-06-16 |
EP1163426A1 (de) | 2001-12-19 |
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