EP 0457241 A1 19911121 - Impulse turbine stage with reduced secondary losses.
Title (en)
Impulse turbine stage with reduced secondary losses.
Title (de)
Impulsturbinenstufe mit verminderten Strömungsverlusten.
Title (fr)
Etage de turbine à action avec pertes secondaires réduites.
Publication
Application
Priority
FR 9005992 A 19900514
Abstract (en)
Impulse turbine stage comprising a bank (1) of fixed blades (2) integral with the stator (3) of the turbine supporting a diaphragm (4) followed by a bank (7) of moving blades (8) mounted on a disc (9) integral with the rotor (6) of the turbine, characterised in that the said disc (9) is provided with transverse ducts (2) parallel to the axis of the rotor (6) and in that the inlets of the said ducts (12) opening into the space between the diaphragm (4) and the disc (9) are provided with scoops (15) oriented to send the fluid towards the inside of the ducts (12). <??>The invention allows a reduction of the secondary losses of an impulse turbine. <IMAGE>
IPC 1-7
IPC 8 full level
F01D 1/02 (2006.01); F01D 5/06 (2006.01); F01D 5/14 (2006.01); F01D 11/00 (2006.01)
CPC (source: EP US)
F01D 1/02 (2013.01 - EP US); F01D 5/145 (2013.01 - EP US); F01D 11/001 (2013.01 - EP US); Y10S 415/914 (2013.01 - EP US)
Citation (search report)
- [Y] GB 1605282 A 19871223 - ROLLS ROYCE 1971 LTD
- [Y] DE 863152 C 19530115 - BUECHI ALFRED DR-ING
- [Y] CH 529914 A 19721031 - MO ENERGETICHESKIJ INSTITUT [RU]
- [A] GB 751011 A 19560627 - NAPIER & SON LTD
- [A] GB 2062118 A 19810520 - COVEBOURNE LTD
- [A] FR 2638206 A1 19900427 - MTU MUENCHEN GMBH [DE]
- [A] FR 2381179 A1 19780915 - ROLLS ROYCE [GB]
- [Y] W.Traupel: "Termische Turbomaschinen" 1977, Springer Verlag, Berlin
- [A] POWER. vol. 133, no. 6, juin 1989, NEW YORK US pages S4 - S5; "Steam turbines and auxiliaries."
- [AD] JP-B-60014161 11 avril 1985
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0457241 A1 19911121; EP 0457241 B1 19941207; AT E115234 T1 19941215; CN 1057506 A 19920101; CS 139491 A3 19920115; DE 69105613 D1 19950119; DE 69105613 T2 19950427; FR 2661946 A1 19911115; FR 2661946 B1 19940610; JP H04228803 A 19920818; MX 166760 B 19930202; US 5125794 A 19920630; ZA 913636 B 19920226
DOCDB simple family (application)
EP 91107717 A 19910513; AT 91107717 T 19910513; CN 91103783 A 19910514; CS 139491 A 19910513; DE 69105613 T 19910513; FR 9005992 A 19900514; JP 20499191 A 19910514; MX 2574991 A 19910510; US 69912791 A 19910513; ZA 913636 A 19910514