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1. (WO2017041099) VOLUTE DESIGN FOR LOWER MANUFACTURING COST AND RADIAL LOAD REDUCTION

Pub. No.:    WO/2017/041099    International Application No.:    PCT/US2016/050412
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Wed Sep 07 01:59:59 CEST 2016
IPC: F04D 29/00
F04D 29/40
F04D 29/42
F04D 29/44
Applicants: FLUID HANDLING LLC
Inventors: RUZICA, Paul J.
Title: VOLUTE DESIGN FOR LOWER MANUFACTURING COST AND RADIAL LOAD REDUCTION
Abstract:
A volute for a pump featuring a volute or casing having a pump inlet for receiving a fluid being pumped, a pump discharge for providing the fluid, and a volute or casing vane forming double volutes therein. The volute has an upper cutwater and also has a lower cutwater. The upper cutwater having a throat area dimensioned to be greater than and not equal to a lower cutwater throat area so the upper cutwater throat area and the lower cutwater throat area provide substantially equal flow velocity at both the upper cutwater and the lower cutwater in response to an angular sweep of the fluid being pumped. The end of passage for the upper cutwater is dimensioned with an upper cutwater passage area that is greater than and not equal to a corresponding lower cutwater passage area of the corresponding end of passage for the lower cutwater.