伸顶通气排水立管的排水能力与管径的关系

Relation between Capacity and Diameter of Drainage Stack

当保持立管内的最大负压不变时 ,排水立管的充水率随管径的增加而减小。不同管径立管的排水能力不应该按同一的充水率来计算 ,管径越大采用的充水率应该越小。当保持立管内的最大负压不变时 ,排水立管的流量随管径增加 ,但不是与管径平方成正比。

In case when the maximum vacuum level inside the sewer stack remains in constant, smaller liquid fullness comes forth as bigger diameter of the stack. So the discharge capacity of the stack has to be calculated on basis of different fullness. The bigger pipe size is, the smaller fullness is. The discharge might be increased with the size of the pipe, but not proportional directly to the square of the diameter.