通风机并联运行“工况点对”迁移规律的实验研究

The experimental research on moving law of a pair of operationpoints under fans parallel connection

以轴流风机并联工作实验为基础 ,研究了通风机并联运行“工况点对”的迁移规律 .发现当风阻增大和减小时 ,处于不同位置的“运行工况点”具有不同的稳定性 ,有的稳定性极大 ,有的稳定性极小 .在矿井实际条件下 ,风阻的经常性波动 。

Based on the parallel operation experiments of axial-flow fans, moving law of a pair of operation points have been studied.Experement results show that the operation points in the different positions have different stabilities for the upward and downward variation of the different air resistance,in which some stabilities may be greater or smaller.So, in the conditions of mine operation,the variation of the air resistance have great possibilities to lead to the unstability of the fan operation.