Turbine blade and diaphragm construction

Details Turbine blade and diaphragm construction Turbine blade and diaphragm construction

2007-03-27

2010-06-01

Nguyen, Ninh H (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

C415S211100, C029S889220

Reexamination Certificate

active

07726938

ABSTRACT:
An axial flow turbine blade and diaphragm construction comprises an annulus of static turbine blades20and inner and outer spacer rings40, 42having apertures41, 43shaped to accommodate inner and outer platform portions22, 23of the blades, whereby the platform portions and the spacer rings together form inner and outer port walls of the turbine diaphragm. A particular feature of the blades is that the inner and outer platform portions22and23have straight side edges22B,22C and23B,23C, which are joined to each other by curved leading edges22D and23D that in plan view have a shape that follows the edge of the corner fillet24in the region of the leading edge26of the aerofoil21.

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Great Britain Patent Office Search Report dated Jul. 13, 2006.
Search Report issued by the German Patent Office in corresponding German Patent Application No. 10 2007 002 326.1; mailed Oct. 19, 2007.

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