双级动叶可调轴流式引风机动叶卡涩原因分析及处理

Cause analysis and treatment for jamming of double-stage moving blade adjustable axial flow fan

华电潍坊发电有限公司进行脱硝超低排放改造后,#3,#4机组双级动叶可调轴流式引风机因叶片根部积灰多次发生卡涩,严重时导致叶片漂移。对风机叶片密封进行改造,改善了叶片根部密封环境,提高了风机运行的可靠性。

After denitration ultra-low emissions renovation in Huadian Weifang Power Generation Company Limited,unit#3,#4 double-stage moving blade adjustable axial flow fans have been jammed for several times since the soot on the blade root,and the serious scenario can be blade drifting. The modification to the fan blade sealing can improve the sealing condition of blade root and reliability of fan operation.