摘要
针对扬程为375 m(3.75 MPa)的超高扬程泵站供水系统,在设计阶段采用Wanda水锤计算软件对断电停泵水锤特点进行分析,并比较不同水锤防护措施对输水系统正压、负压水锤的影响。为准确评估和验证模拟设计的水锤防护措施在实际工程应用的有效性,采用水锤监测系统现场实测断电停泵工况。结果表明:采用防水锤空气阀、多功能水泵控制阀、水击泄放阀和空气罐的水锤联合防护方案,现场实测最大、最小压力与模拟结果误差均小于10%,有效降低了断电停泵水锤增压,消除了管线负压,保证了管线安全运行;相同设计体积下,空气罐安装位置距离产生负压的管线段越近,负压缓解效果越好;水锤监测系统为准确评估水锤防护措施的有效性和模型校核提供了科学依据。
Wanda water hammer calculation software was used to analyze the characteristics of water hammer during power outage and pump shutdown in the water supply system of the ultra‑high lift pumping station with a head of 375 m(3.75 MPa)in the design phase.The impact of different water hammer protection measures on the positive and negative pressure water hammer of the water delivery system was compared.To accurately evaluate and verify the effectiveness of simulated water hammer protection measures in practical engineering applications,a water hammer monitoring system was used to measure the power outage and pump shutdown conditions on site.The results show that the integrated protection scheme of water hammer using waterproof hammer air valve,multi‑functional water pump control valve,water hammer relief valve,and air tank has an error of less than 10%between the maximum and minimum pressure measured on site and the simulation results.It effectively reduces the pressure increase of water hammer during power outage and pump shutdown,eliminates negative pressure in the pipeline,and ensures the safe operation of the pipeline;under the same design volume,the closer the installation position of the air tank is to the pipeline segment that generates negative pressure,the better the negative pressure relief effect;the water hammer monitoring system provides a scientific basis for accurately evaluating the effectiveness of water hammer protection measures and model verification.
作者
蒋丽云
徐秋红
吴若希
盛炟
JIANG Li‑yun;XU Qiu‑hong;WU Ruo‑xi;SHENG Da(Zhuzhou Zhuhua Smart Water Technology Co.Ltd.,Zhuzhou 412000,China;College of Civil Engineering,Hunan University,Changsha 410000,China)
出处
《中国给水排水》
北大核心
2025年第14期94-100,共7页
China Water & Wastewater
关键词
超高扬程泵站
水锤监测系统
水击泄放阀
空气罐
水锤联合防护
监测验证
ultra‑high lift pumping station
water hammer monitoring system
water hammer relief valve
air tank
integrated water hammer protection
monitoring validation
