扇贝;
The induced draught fan in pulverizing system is replaced with more suitable type because the old fan has problem of main shaft rupture and shell vibration, short lifetime after long time operation, lower reliability.
考虑到改前风机运行中存在的主轴断裂、机壳振动等实际问题,使用时间较长,剩余寿命较少,可靠性较低;
Its application shows that it is effective to control the noise radiation of fan shell and reduce noise by forty percent.
应用表明控制蜗壳声辐射的效果好,相对降噪率达40%。
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