Accession Number:

ADD019076

Title:

Flow Energizing system for Turbomachinery

Descriptive Note:

Patent, Filed 6 Jan 97, patented 14 Jul 98

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s):

Report Date:

1998-07-14

Pagination or Media Count:

9.0

Abstract:

The invention is directed to a flow energizing system for turbomachinery including means for forming a plurality of rotating jet-sheet blades upstream of an impeller and a component for circumferentially varying the blade geometries of the plurality of rotating jet-sheet blades. The a component for forming a plurality of rotating jet-sheet blades includes impeller shroud 26 having upstream-projecting axial extension 28 attached coaxially with and projecting upstream of shroud 26 recirculation chamber 30 surrounding shroud and axial extension, 26 and 28 recirculation flow inlet 32 formed by a gap between housing 12 and downstream ends. 20a and 26a, respectively, of impeller 20 and shroud 26, for allowing backflow to pressurize recirculation chamber 30 and a plurality of generally axially-extending jet-sheet slots 34 circumferentially distributed around a periphery of axial extension 28 and passing therethrough. The component for circumferentially varying blade geometries of the plurality of rotating jet-sheet blades includes axially-extending stationary liner 36 disposed concentric with and radially inward of axial extension 28 wherein liner 36 is shaped and configured for selectively covering portions of slots 34.

Subject Categories:

  • Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE