Metering water to turbine bucket cooling passages by flow...

Details Metering water to turbine bucket cooling passages by flow... Metering water to turbine bucket cooling passages by flow...

F - Mech Eng,Light,Heat,Weapons

01

D

170/71

F01D 25/12 (2006.01) F01D 5/18 (2006.01)

Patent

CA 1159371

51DV 2684 METERING WATER TO TURBINE BUCKET COOLING PASSAGES BY FLOW RESISTANCE DEVICES ABSTRACT OF THE DISCLOSURE An improved cooling system utilizes flow resistant devices to distributing liquid coolane to air foil coolant channels in a bucket of a turbine. A separate flow resistance device associated with each of the air foil coolant channels resists the flow of liquid coolant into the coolant channels whereby a fluid head is developed in a standpipe upstream of the flow resistance devices. The fluid head, together with the outward radial acceleration meters the flow of fluid through each flow resistance device according to the head. In the disclosed embodiments, the flow resistant devices alternately take the form of a tortuous passage, an orifice and a plurality of vortex flow chambers.

381075

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