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玻璃钢风机失速现象

作者: 来源: 发布日期: 2024-06-24 浏览次数:
信息摘要:
玻璃钢风机失速一般发生在两台风机运行时,由于风压太大或风量太小而引起动叶出口产生涡流而不打风,从而引起负荷偏差大,动叶自动。其现象是,当两个离心风机并列运行并投入自动控制时,离心风机的动叶扩大的风管风…

玻璃钢风机失速一般发生在两台风机运行时,由于风压太大或风量太小而引起动叶出口产生涡流而不打风,从而引起负荷偏差大,动叶自动。其现象是,当两个离心风机并列运行并投入自动控制时,离心风机的动叶扩大的风管风压下降的一个风机的电流几乎没有变化,另一个(发生失速)鼓风机的电流下降,电流下降的离心风机轴承温度上升,振动增大。

玻璃钢风机

玻璃钢风机失速现象,并联运行的离心风机失速出现下列现象:

(1)失速风机压头减小,流量增加,电流大幅度下降,出口风温增大;

(2)失速风机的噪声明显增加,严重时会引起壳体、风道、烟道的振动;

(3)失速风机振动增大,DCS发出呼吸振动大警报;

(4)投入自动时,与失速风机并联运行的另一台风机的电流、容积比大幅度上升;

(5)在自动状态下,另一风向的机翼开度增加,与风机“喘振”不同的是,风机失速后,风压、流量下降,脉动没有发生。

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