管道输送液体,水头大的采用重力自流,水头小的或负水头的,采用水泵加压输水,或两者结合应用。笔者认为,管输,尤其是长距离引水、城镇配水,除采用上述两种输水形式外,客观上存在着第三种输水形式:虹吸流。1990年初,经过长期的努力,虹吸原理的研究及实际应用有了重大突破。福建泉州长距离引水工程设计研究所,根据虹吸原理,研制成功一种新型虹吸装置;潜水式真 Plumbing liquid, large head using gravity gravity, the head of small or negative head, the use of pressurized water pump, or a combination of both applications. In my opinion, the pipe transport, especially long-distance water diversion, urban water distribution, in addition to the use of the two forms of water delivery, the objective existence of a third form of water transport: siphon flow. At the beginning of 1990, after long-term efforts, the siphon principle research and practical application have made a major breakthrough. Fujian Quanzhou long-distance diversion project design institute, according to the siphon principle, the successful development of a new type of siphon device; diving true