| 引用本文: | 石晓悟,何武全,田雨丰,等.山丘区自压输水管道水锤防护措施研究[J].灌溉排水学报,0,():-. |
| Shi Xiaowu,He Wuquan,Tian Yufeng,et al.山丘区自压输水管道水锤防护措施研究[J].灌溉排水学报,0,():-. |
|
| 摘要: |
| 为避免山丘区自压输水管道因水锤而遭受破坏,保障管道的安全运行。针对山丘区地势起伏的自压输水管道中水锤现象正负压较大的特点,以陕西省千阳县一自压输水管道工程为例,依据水锤基本计算理论,采用倾斜直管和拟合等效短直管相结合的数值模拟方法,分别模拟产生负压极大值的各个驼峰断面,设置进排气阀后的防护效果和正压最大值的末端控制阀门断面前设置超压泄压阀的防护效果,对计算模拟结果进行分析,确定水锤防护措施及具体位置。结果表明采用进排气阀和超压泄压阀联合防护水锤的方法,可以有效缓解水锤现象的发生,保证管道内的压力在设计压力允许范围内。 |
| 关键词: 山丘区;自压管道输水;水锤防护;数值模拟;进排气阀;超压泄压阀 |
| DOI： |
| 分类号:S274 |
| 基金项目:国家重点研发计划课题(2022YFD1900402) |
|
| Study on Water Hammer Protection Measures for Gravity Flow Pipeline in Hilly Area |
|
Shi Xiaowu, He Wuquan, Tian Yufeng, Li Qianxi
|
|
College of Water Resources and Architectural Engineering,Northwest A F University,Shaanxi Yangling
|
| Abstract: |
| In order to avoid the damage of gravity flow pipeline in hilly area due to the water hammer and ensure the safe operation of the pipeline. In view of the large positive and negative pressure of the water hammer phenomenon in the gravity flow pipeline with undulating terrain in the hilly area, taking the gravity flow pipeline project in Qianyang County, Shaanxi Province as an example, based on the basic calculation theory of the water hammer, the numerical simulation method combining the inclined straight pipe and the fitting equivalent short straight pipe is adopted, Respectively simulate the protective effect of each hump section that produces the maximum negative pressure after setting the inlet and exhaust valve and the protective effect of setting the over-pressure relief valve in front of the end control valve section of the maximum positive pressure, analyze the calculation and simulation results, and determine the water hammer protection measures and specific locations. The results show that the combination of inlet and exhaust valve and over-pressure relief valve to prevent water hammer effectively alleviates the occurrence of water hammer and ensures that the pressure in the pipeline is within the allowable range of design pressure. |
| Key words: hilly area;gravity flow pipeline water conveyance;water hammer protection;numerical simulation;inlet and exhaust valve;over-pressure relief valve |
