EP0457241A1 - Impulsturbinenstufe mit verminderten Strömungsverlusten - Google Patents
Impulsturbinenstufe mit verminderten Strömungsverlusten Download PDFInfo
- Publication number
- EP0457241A1 EP0457241A1 EP91107717A EP91107717A EP0457241A1 EP 0457241 A1 EP0457241 A1 EP 0457241A1 EP 91107717 A EP91107717 A EP 91107717A EP 91107717 A EP91107717 A EP 91107717A EP 0457241 A1 EP0457241 A1 EP 0457241A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disc
- diaphragm
- turbine
- grid
- turbine stage
- 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.)
- Granted
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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
-
- 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
- F01D11/001—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between stator blade and rotor
-
- 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
- F01D5/145—Means for influencing boundary layers or secondary circulations
-
- 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
- Y10S415/00—Rotary kinetic fluid motors or pumps
- Y10S415/914—Device to control boundary layer
Definitions
- the present invention relates to an action turbine stage comprising a grid of fixed blades integral with the stator of the turbine supporting a diaphragm followed by a grid of movable blades mounted on a disk integral with the rotor of the turbine.
- the action turbine stage according to the invention making it possible to reduce the reinjection of the leakage flow and therefore to increase the efficiency is characterized in that said disc is provided with transverse pipes parallel to the axis of the rotor and in that the inlets of said pipes opening into the space between the diaphragm and the disc are provided with scoops open laterally in the direction of rotation to send the fluid towards the inside of the pipes.
- the known action turbine stage (FIG. 1) comprises a grid 1 of fixed vanes 2 secured to the stator 3. This grid 1 supports a diaphragm 4 provided with a seal 5 facing the rotor 6 of the turbine .
- the grid 1 is followed by a grid 7 of movable vanes 8 carried by a disc 9 secured to the rotor 6.
- a leakage current 10 coming from upstream from the diaphragm 4 passes through the seal 5 and is injected according to a current 11 at the foot of the moving blades 8.
- This current 11 disturbs the main flow and therefore reduces the yield . This reduction is very noticeable for the vanes 8 of small elongations (ratio of their height to their chord).
- the discs 9 are provided with transverse pipes 12 arranged at the same distance R from the axis of the rotor and parallel to the latter. In the pipes were arranged hollow sockets 13 leveling the disc 9 on its downstream face and protruding on the upstream face.
- This overpressure sets in motion the fluid in the pipes 12 which goes from the upstream face to the downstream face of the disc 9.
- the efficiency of the scoops 15 is increased by the presence of a circumferential groove 17 formed in the diaphragm 4 opposite the row of scoops 15.
- the fluid leaving the pipes 12 is used to supply the diaphragm seal of the next stage, the flow rate of which is generally close to 10 is equal to the flow rate 19 leaving the pipes 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Control Of Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9005992 | 1990-05-14 | ||
FR909005992A FR2661946B1 (fr) | 1990-05-14 | 1990-05-14 | Etage de turbine a action avec pertes secondaires reduites. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0457241A1 true EP0457241A1 (de) | 1991-11-21 |
EP0457241B1 EP0457241B1 (de) | 1994-12-07 |
Family
ID=9396585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91107717A Expired - Lifetime EP0457241B1 (de) | 1990-05-14 | 1991-05-13 | Impulsturbinenstufe mit verminderten Strömungsverlusten |
Country Status (10)
Country | Link |
---|---|
US (1) | US5125794A (de) |
EP (1) | EP0457241B1 (de) |
JP (1) | JPH04228803A (de) |
CN (1) | CN1057506A (de) |
AT (1) | ATE115234T1 (de) |
CS (1) | CS139491A3 (de) |
DE (1) | DE69105613T2 (de) |
FR (1) | FR2661946B1 (de) |
MX (1) | MX166760B (de) |
ZA (1) | ZA913636B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012052740A1 (en) * | 2010-10-18 | 2012-04-26 | University Of Durham | Sealing device for reducing fluid leakage in turbine apparatus |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1167695A1 (de) * | 2000-06-21 | 2002-01-02 | Siemens Aktiengesellschaft | Gasturbine und Gasturbinenleitschaufel |
US6779972B2 (en) * | 2002-10-31 | 2004-08-24 | General Electric Company | Flowpath sealing and streamlining configuration for a turbine |
GB0319002D0 (en) | 2003-05-13 | 2003-09-17 | Alstom Switzerland Ltd | Improvements in or relating to steam turbines |
US8047767B2 (en) * | 2005-09-28 | 2011-11-01 | General Electric Company | High pressure first stage turbine and seal assembly |
GB2440344A (en) | 2006-07-26 | 2008-01-30 | Christopher Freeman | Impulse turbine design |
IT1403416B1 (it) * | 2010-12-21 | 2013-10-17 | Avio Spa | Rotore palettato di una turbina a gas per motori aeronautici e metodo per il raffreddamento di detto rotore palettato |
DE102011121634B4 (de) * | 2010-12-27 | 2019-08-14 | Ansaldo Energia Ip Uk Limited | Turbinenschaufel |
EP2520764A1 (de) * | 2011-05-02 | 2012-11-07 | MTU Aero Engines GmbH | Schaufel mit gekühltem Schaufelfuss |
US9702261B2 (en) * | 2013-12-06 | 2017-07-11 | General Electric Company | Steam turbine and methods of assembling the same |
JP7202259B2 (ja) * | 2019-05-31 | 2023-01-11 | 三菱重工業株式会社 | 蒸気タービン |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE863152C (de) * | 1940-09-21 | 1953-01-15 | Alfred Dr-Ing Buechi | Kuehleinrichtung fuer Turbinenraeder |
GB751011A (en) * | 1953-07-06 | 1956-06-27 | Napier & Son Ltd | Improvements in or relating to the cooling of turbine blades |
CH529914A (de) * | 1971-08-11 | 1972-10-31 | Mo Energeticheskij Institut | Turbinenstufe |
FR2381179A1 (fr) * | 1977-02-18 | 1978-09-15 | Rolls Royce | Systeme de refroidissement de turbomachines |
GB2062118A (en) * | 1979-11-05 | 1981-05-20 | Covebourne Ltd | Improvements in or relating to a turbine |
GB1605282A (en) * | 1973-10-27 | 1987-12-23 | Rolls Royce 1971 Ltd | Bladed rotor for gas turbine engine |
FR2638206A1 (fr) * | 1988-10-21 | 1990-04-27 | Mtu Muenchen Gmbh | Dispositif d'amenee d'air de refroidissement pour les aubes de rotor de turbines a gaz |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1230325A (de) * | 1969-03-05 | 1971-04-28 | ||
GB1350471A (en) * | 1971-05-06 | 1974-04-18 | Secr Defence | Gas turbine engine |
BE791162A (fr) * | 1971-11-10 | 1973-03-01 | Penny Robert N | Rotor de turbine |
US4453888A (en) * | 1981-04-01 | 1984-06-12 | United Technologies Corporation | Nozzle for a coolable rotor blade |
JPS6014161A (ja) * | 1983-07-06 | 1985-01-24 | Ngk Spark Plug Co Ltd | 空燃比センサ |
US4708588A (en) * | 1984-12-14 | 1987-11-24 | United Technologies Corporation | Turbine cooling air supply system |
US4674955A (en) * | 1984-12-21 | 1987-06-23 | The Garrett Corporation | Radial inboard preswirl system |
US4882902A (en) * | 1986-04-30 | 1989-11-28 | General Electric Company | Turbine cooling air transferring apparatus |
US4666368A (en) * | 1986-05-01 | 1987-05-19 | General Electric Company | Swirl nozzle for a cooling system in gas turbine engines |
US4761116A (en) * | 1987-05-11 | 1988-08-02 | General Electric Company | Turbine blade with tip vent |
-
1990
- 1990-05-14 FR FR909005992A patent/FR2661946B1/fr not_active Expired - Lifetime
-
1991
- 1991-05-10 MX MX025749A patent/MX166760B/es unknown
- 1991-05-13 EP EP91107717A patent/EP0457241B1/de not_active Expired - Lifetime
- 1991-05-13 DE DE69105613T patent/DE69105613T2/de not_active Expired - Fee Related
- 1991-05-13 CS CS911394A patent/CS139491A3/cs unknown
- 1991-05-13 AT AT91107717T patent/ATE115234T1/de not_active IP Right Cessation
- 1991-05-13 US US07/699,127 patent/US5125794A/en not_active Expired - Fee Related
- 1991-05-14 ZA ZA913636A patent/ZA913636B/xx unknown
- 1991-05-14 CN CN91103783A patent/CN1057506A/zh active Pending
- 1991-05-14 JP JP3204991A patent/JPH04228803A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE863152C (de) * | 1940-09-21 | 1953-01-15 | Alfred Dr-Ing Buechi | Kuehleinrichtung fuer Turbinenraeder |
GB751011A (en) * | 1953-07-06 | 1956-06-27 | Napier & Son Ltd | Improvements in or relating to the cooling of turbine blades |
CH529914A (de) * | 1971-08-11 | 1972-10-31 | Mo Energeticheskij Institut | Turbinenstufe |
GB1605282A (en) * | 1973-10-27 | 1987-12-23 | Rolls Royce 1971 Ltd | Bladed rotor for gas turbine engine |
FR2381179A1 (fr) * | 1977-02-18 | 1978-09-15 | Rolls Royce | Systeme de refroidissement de turbomachines |
GB2062118A (en) * | 1979-11-05 | 1981-05-20 | Covebourne Ltd | Improvements in or relating to a turbine |
FR2638206A1 (fr) * | 1988-10-21 | 1990-04-27 | Mtu Muenchen Gmbh | Dispositif d'amenee d'air de refroidissement pour les aubes de rotor de turbines a gaz |
Non-Patent Citations (3)
Title |
---|
JP-B-60014161 11 avril 1985 * |
POWER. vol. 133, no. 6, juin 1989, NEW YORK US pages S4 - S5; "Steam turbines and auxiliaries." * |
W.Traupel: "Termische Turbomaschinen" 1977, Springer Verlag, Berlin * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012052740A1 (en) * | 2010-10-18 | 2012-04-26 | University Of Durham | Sealing device for reducing fluid leakage in turbine apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN1057506A (zh) | 1992-01-01 |
FR2661946B1 (fr) | 1994-06-10 |
DE69105613T2 (de) | 1995-04-27 |
FR2661946A1 (fr) | 1991-11-15 |
US5125794A (en) | 1992-06-30 |
JPH04228803A (ja) | 1992-08-18 |
CS139491A3 (en) | 1992-01-15 |
DE69105613D1 (de) | 1995-01-19 |
MX166760B (es) | 1993-02-02 |
ZA913636B (en) | 1992-02-26 |
EP0457241B1 (de) | 1994-12-07 |
ATE115234T1 (de) | 1994-12-15 |
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