| 长距离输水工程停泵水锤的空气罐与气阀防护比较研究 |
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| 引用本文： | 黄玉毅 李建刚 符向前 蒋 劲 兰刚,范征.长距离输水工程停泵水锤的空气罐与气阀防护比较研究[J].中国农村水利水电,2014,0(8):186-188. |
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| 作者姓名： | 黄玉毅 李建刚 符向前 蒋 劲 兰刚 范征 |
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| 作者单位： | 1. 酒泉市水利水电勘测设计院
2. 武汉大学 |
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| 基金项目： | 基于Steger-Warming FVS 的长管道气液两相瞬变流计算及其水锤的气阀防护研究 |
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| 摘 要： | 针对寒冷地区长距离输水管道户外设置水锤防护措施困难的特点，提出了空气罐方法的水锤防护措施，阐述了空气罐的工作原理，推导了空气罐和空气阀的边界条件的数学模型，并结合北方某工程实例，应用特征线法对采用空气阀和空气罐两种不同措施的防护效果进行数值模拟和比较分析，并且计算出管道出现汽化时气体体积变化。结果表明空气罐能有效消除空化体积抑制事故停泵后管道内剧烈的压力波动，是一种有效的水锤防护措施。
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| 收稿时间： | 2014-01-21 |
| 修稿时间： | 2014-04-24 |
Research on the Comparison of Air Vessel and Air Valve on Pump-stopping Water Hammer Protection of Long Distance Pipeline |
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| Abstract: | For long-distance water pipelines in cold regions, setting water hammer protection outdoor is very difficult.In order to protect these pipelines,we proposed the method of air vessel as water hammer protection , described the operating principle and the mathematical model of air valve and air vessel, as well as their boundary conditions were conducted. Combined with a specific case, the protection effect of the two different measures were compared through numerical simulation with the characteristic line method. The change of cavitation volume was calculated when vaporization appeared. The results show that the air vessel can effectively suppress the pressure fluctuations of pumping accident, it is an effective measure to prevent water hammer. |
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