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在34层高度的试验塔上,采用定流量排水装置排水,考察在不同影响因素下S型存水弯内的水封高度变化及水封损失情况,探究其抵抗排水管道内负压波动的水封保持能力。结果表明:定流量排水120 s时S型存水弯水封高度损失最大,存水弯下肢端管径为80 mm时水封高度损失最小,存水弯下肢端与水平方向夹角为90°时水封高度损失最小。在排水的中后期水封液面波动幅度最大,导致负压抽吸的水封损失最多。
On the 34-story test tower, the drainage of constant flow drainage device was adopted to investigate the variation of water seal height and the loss of water seal in S-type trap with different factors, and the water resistance to the negative pressure fluctuation in drainage pipe Capability to keep The results show that the water seal loss is the largest when S is lower than 120 mm when the discharge is at 120 s, and the angle between the lower extremity of the trap and the horizontal is 90 ° When the water seal height loss is minimal. In the mid-late drainage the maximum liquid level fluctuation, resulting in the most negative pressure seal suction loss.