离心泵启动时,若泵内存有空气,由于空气密度很低,旋转后产生的离心力小,因而叶轮中心区所形成的低压不足以将储槽内的液体吸入泵内,虽启动离心泵也不能输送液体。此种现象称为气缚,表示离心泵无自吸能力,所以必须在启动前向壳内灌满液体。
本文简述了利用自吸筒来替代离心泵水下底阀,以解决离心泵气缚现象的工艺设计。
This article briefs the process design of the replacement of centrifugal pump's underwater bottom valve by self-absorption cylinder so as to solve the aerial binding phenomenon with centrifugal pumps.
实践证明:利用这种无重复灌水泵设计能解决离心泵的气缚现象,降低了运行及设备维修费用,此技术在废水处理和循环回收工程上具有推广意义。
Practice proves that using this design will reduce both operation cost and maintenance cost. This technology has popularizing significance in sewage treatment and water reclamation engineering.
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