郭壁改扩建供水工程水力过渡的数值模拟  

Numerical Simulation of Hydraulic Transition of Guobi Reconstruction and Extension Water Supply Project

作　　者：吴鑫昊 苏沛兰[1] 吴建华[1] 张玉胜[1] 成一雄 WU Xin-hao;SU Pei-lan;WU Jian-hua;ZHANG Yu-sheng;CHENG Yi-xiong(College of Water Resources Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学水利科学与工程学院,山西太原030024 [2]太原理工大学土木工程学院,山西太原030024

出　　处：《水电能源科学》2022年第6期110-113,126,共5页Water Resources and Power

基　　金：山西省水利科学技术研究与推广项目(2021LS035,2021LS008);山西省基础研究计划(自由探索类)面上项目(20210302123169)。

摘　　要：以山西省晋城市郭壁改扩建供水工程三级泵站为例,探索供水工程水锤安全防护措施。通过数值模拟发现,城镇机组中2台水泵并联运行发生停泵水锤时,泵站管道最大负压和水泵最大倒转转速均不满足《泵站设计规范》要求。结合设计单位推荐的水锤防护措施,通过对比优选方式提出两阶段液控蝶阀、空气阀、真空破坏阀的联合水锤防护方案。数值模拟结果表明,在该联合防护措施下郭壁改扩建供水工程三级泵站的相关水力参数均满足《泵站设计规范》要求,系统运行安全。This paper takes the third-stage pumping station of the rebuilt and expanded water supply project in Guobi, Jincheng City, Shanxi Province as an example to explore the safety protection measures for water hammer in the water supply project. Through numerical simulation, it is found that when two water pumps in the urban unit are operated in parallel and water hammer occurs, the maximum negative pressure of the pumping station pipeline and the maximum reversing speed of the pumps do not meet the requirements of the "Pumping Station Design Code". Combining with the water hammer protection measures recommended by the design unit and comparing and optimizing methods, this paper proposes a two-stage hydraulic control butterfly valve, air valve, and vacuum break valve combined water hammer protection scheme. Numerical simulation results show that under the joint protective measures, the relevant hydraulic parameters of the third-stage pumping station of Guobi’s reconstruction and expansion of the water supply project meet the requirements of the "Pumping Station Design Specification", and the system is safe to operate.

关 键 词：供水工程 水力过渡过程 水锤防护 液控蝶阀 空气阀 真空破坏阀 

分 类 号：TV674[水利工程—水利水电工程]