2010•Power EquipmentRequires access

Analysis on Stall Failure of Adjustable Static-blade Axial-flow Fan for Boilers

Sun Shu-kuang

Abstract

At present,axial flow induced-draft fans are generally used for coal-fired power generation units above 300 MW,most of which are of the adjustable static-blade type.Stalling failure occurring in operation of the axial-flow fans was analyzed,during which the failure was found to be mainly caused by improper opening degree of adjustable blades that made air fan work in stalling zone.The problem can be solved by turning the blade opening to an appropriate degree.

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Key concepts: Engineering, Axial compressor, Stall (fluid mechanics), Mechanical fan, Structural engineering, Boiler (water heating), Flow (mathematics), Mechanical engineering