研制电厂除灰系统用泵的几点体会  

A Discussion on Development of Slurry Pump for Power Plant Ash Disposal

作　　者：崔巍[1] 唐学林[1] 李钢[1] 

机构地区：[1]煤炭科学研究总院唐山分院

出　　处：《水力采煤与管道运输》1997年第3期37-39,48,共3页Hydraulic Coal Mining & Pipeline Transportation

摘　　要：电厂除灰系统技术改造工程中，输送灰浆所用渣浆泵的运行工况点主要取决于管道阻力。如使用扬程特性曲线平缓的渣浆泵，当灰浆浓度变化，引起管道阻力变化，导致泵的流量急剧改变，不能适应生产要求。针对此类问题，作者对该类渣浆泵的设计进行了改进，对其过流部件的材质进行了更换，从而使输送灰浆所用渣浆泵运行寿命达到了5000h以上，取得了很好的经济效益。The operating point of a slurry pomp used for this purpose depends mainly on pipe resistance. Use of a slurry pump operating with a flat head characteristic curve would result in abrupt change of flowrate due to varforion of pipe resistance whenever tha density of slurry varies. To cope with this problem a slurry pump with inproved design has ben developed,in which new materisls are used for the parts in contact with slurry flow.As a result the. service life of the ash disposal pump is over 5000 hours,bringing about therefore favourable economic result.

关 键 词：灰浆 管道输送 渣浆泵 除灰系统 发电厂 

分 类 号：TM621.7[电气工程—电力系统及自动化]