The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1992
Filed:
May. 13, 1991
Applicant:
Inventor:
Francois Detanne, Paris, FR;
Assignee:
GEC Alsthom SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
415115 ; 415116 ; 415914 ;
Abstract
An impulse turbine stage comprising a set (1) of fixed vanes (2) fixed to the stator (3) of the turbine and supporting a diaphragm (4), followed by a set (7) of moving vanes (8) mounted on a disc (9) fixed to the rotor (6) of the turbine, the stage being characterized in that said disk (9) is provided with through ducts (12) parallel to the axis of the rotor (6) and in that the inlets to the ducts (12) opening out into the gap between the diaphragm (6) and the disk (9) are provided with scoops (15) open sideways in the direction of rotation to direct fluid into the ducts (12). The invention serves to reduce the secondary losses of an impulse turbine.