摘要
在理论与数值分析基础上对清洗机的附着力进行了计算与分析,确定了新叶轮的设计流量,通过试验测定了清洗机过流量与水力损失之间的关系,并初步确定了清洗机新叶轮的设计扬程,在保证新叶轮与旧叶轮装配的互换性的基础上确定了新叶轮的设计转速,利用速度系数法设计了新叶轮,对新叶轮的运行特性进行了数值模拟与预测.试验结果表明:新叶轮使用后清洗机功率消耗大幅度降低72%,运行转速降低42%,清洗机依然附壁有力,运行平稳,内部泵组件的功率-流量特性曲线为缓降型.新叶轮达到了预期的目标,但出水盒与出水弯头依然值得进一步优化.
Based on the theoretic and numerical analyses,the adsorbability power of automatic cleaner was calculated and the necessary flow rate of new impeller is determined.The relation between flow rate and hydraulic losses of the pool cleaner was obtained by experiments and the necessary head of new impeller is achieved.New impeller could equip into former automatic cleaner successfully although the rotating speed is lower than before.The final test results show that new impeller′s power consummation falls about 72% and the motor speed reduces about 42%. The automatic cleaner can attach itself to the wall closely and run calmly, the cost of electric system reduces sharply and the running life prolongs. Although the optimization aims come true, the outflow chamber and pipe should be optimized further.
出处
《排灌机械》
EI
2009年第4期215-219,共5页
Drainage and Irrigation Machinery
基金
国家科技支撑计划项目(2008BAF34B15-1)
江苏省科技服务业计划(BM2008375)
关键词
清洗机
游泳池
叶轮
水力损失
数值模拟
automatic cleaner
swimming pool
impeller
hydraulic losses
flow simulation
