大中型立式轴流泵站经常采用虹吸式出水流道,通常是通过水泵开启后高速水流的挟气逐步将出水管内积存的空气排除来实现的。但是,在利用水流挟带空气实现虹吸的过程中,管内空气处于压缩膨胀状态,水泵机组在扬程高、流量小、功率大的不稳定工况下,容易引起振动,并伴有不规则的噪音甚至巨响,使机组效率降低,寿命缩短。另外,也可利用真空泵抽真空来实现虹吸,但需增加相应的设备,管理也较麻烦。我们在大涨泾泵站的设计中创立了既不设抽真空设备又能消除机组振动的新方法,即泵站自排式虹吸装 Large and medium-sized vertical axial flow pump station often uses siphon water outlet, usually through the water pump after the opening of the high-speed flow of gas and gradually remove the air trapped within the outlet to achieve. However, during the process of siphoning with air entrained by the water flow, the air in the tube is in a state of compression and expansion. The pump unit is prone to vibrations with unstable noise due to high lift, low flow rate and large power. Even loud noise, so that unit efficiency is reduced, life expectancy shortened. In addition, you can also use the vacuum pump vacuum to achieve siphon, but the need to increase the appropriate equipment, management is also more troublesome. We have set up Jing Pumping Station in the design of the creation of neither a vacuum pumping equipment but also eliminate the vibration of the new method that pumping station self-draining siphon