摘要
在多种规格风机尾管上的不同部位测试静压ΔP,同时改变风机风量。找出由于尾管端口作用对气流造成的影响系数θ以及θ与尾管直径、测压位置和流置的关系。用θ、尾管直径和ΔP值计算风量,这种办法灵敏度高,装置简单、使用方便且能量损失小。
Static pressure ΔP is measured on tails pipes of air blowers of various specifications while changing air volume flow. A coefficient θ which reflects the influence of the tail pipe entrance on the air flow and a relation among θ, the tail pipe diameterd, the pressure measuring place and the volume flow are found out. Air volume flow can be determined by calculating parameters θ, d and ΔP. This method has advantages of high sensitivity, simple apparatus, easy operation and small energy loss.
关键词
鼓风机
送风调节
风量
测试
tail pipe air blower, choked flow coefficient, pressure difference
