大型低扬程全地下排涝泵站工艺设计

Process Design of Large-sized Full Underground Drainage Pumping Station with Low Head

摘要:

龙昆沟北雨水排涝泵站是龙昆沟流域系统治涝方案的重要节点工程，泵站项目的实施可以有效提高片区的排涝保障能力。泵站规划设计流量为80 m³/s，属于特低扬程大流量泵站，是海南省已建规模最大排涝泵站。从水泵性能、环境影响、工程投资及运行维护等多方面综合比选，使用湿式全贯流潜水泵，并采用全地埋式布置型式。经装置模型试验，扬程范围内泵装置效率较高，水泵选型可满足泵站安全运行要求。

Abstract:

The Longkungou North Rainwater Drainage Pumping Station is an important node project in the flood control and waterlogging drainage scheme for the Longkungou River Basin. The implementation of the pumping station project can effectively improve the waterlogging drainage capabilities of the area. The planned design flow of the pumping station is 80 m³/s, belonging to the pumping station with low head and large flow. And the pumping station is the built waterlogging drainage pumping station with the largest waterlogging drainage capacity in Hainan Province. The pump performances, environmental effect, engineering investment, operation, maintenance and other aspects are comprehensively compared and selected. The wet full-flow submersible pump is used with the fully underground layout type. The pump unit efficiency within the range of head is higher through the unit modelling test. The selection of the pump type can meet the safe operation requirements of the pumping station.