MPS275辊盘式中速磨煤机安装中的问题及处理

Problems and Treatment of MPS275 Disc-roller Medium-speed Mill

天津北疆一期2×1000MW机组工程安装了6台型号为MPS275辊盘式中速磨煤机,该磨煤机与300、600MW机组中速磨煤机相比结构有一定的变化,而且体积和单件质量较大,在运输、安装中易出现变形,造成组合、安装中出现较大误差。在施工现场采取了基础台板变形和下架体偏差的控制,喷嘴环间隙和分离器施工方案的调整等措施,很好地解决了工程中出现的问题,顺利完成了磨煤机的安装施工任务。

Six MPS275 disc-roller medium-speed mills were installed for the two 1 000 MW units of Tianjin Beijiang Phase 1 Power Plant.Compared to the medium-speed mills for 300 MW or 600 MW units,this kind of mill is larger in volume and weight,and is prone to deformation during transportation and installation,and as a result,larger errors occur in the process of assembly and instillation.Measures were taken on the construction site,including control of the deformation of the foundation bedplate and the deviation of the scaffold,adjustment of the nozzle ring clearance,and construction method adjustment for divider,which have well solved the above-said problems.