论文部分内容阅读
通常水泵吸水系统大多设置水下足阀引水启动,水下足阀阻力大,易为砂、石等杂物所阻搁,也较易磨损,检修工作量较大。水上足阀的使用虽然改善了由于足阀在水下带来的维修困难条件,但未能解决其基本缺点;特别是在足阀不够严密或有漏泄时,往往要多次引灌、多次停开水泵,才能正常投入运转。水射器真空引水启动要耗费一定水量,启动时间较长,又需要另设配套设备。以上各种系统,停泵时间较长时,再启动工
Usually the pump water-absorbing system is usually set to start the underwater foot valve diversion. The resistance of the submarine foot valve is large. It is easily blocked by sand, stone and other debris, and it is also relatively easy to wear. The workload of maintenance is large. Although the use of water foot valve improves the difficult maintenance conditions caused by the foot valve in the water, it fails to solve the basic shortcomings; in particular, when the foot valve is not tight enough or leaks, it often requires multiple irrigation and multiple times. Stop the pump before it can be put into operation. Water ejector vacuum diverting starts to consume a certain amount of water, and the start-up time is longer, and it needs another auxiliary equipment. In the above systems, when the pump stop time is longer, start the work again.