| 杨开林.控制输水管道瞬态液柱分离的空气阀调压室[J].水利学报,2011,42(7): |
| 控制输水管道瞬态液柱分离的空气阀调压室 |
| Air-valve surge tank for controlling liquid column separation in water supply projects |
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| DOI： |
| 中文关键词: 空气阀调压室 液柱分离 管道 |
| 英文关键词: Air-valve surge tank liquid column separation water supply projects |
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| 中文摘要: |
| 提出了用于控制输水管道瞬态液柱分离的新型空气阀调压室，即在输水线路上设置一个短管，短管顶部密封，然后在它顶部设置空气阀。在正常输水时，空气阀关闭，调压室 （短管） 充满水体，没有气体。当调压室顶部水压下降到大气压以下时，空气阀进气，在调压室中形成气囊，防止输水管道发生液体汽化现象，或者出现超过管道承受能力的高度真空压力。当调压室底部水压超过大气压时，调压室中气体压缩，气体由空气阀缓慢排出，避免发生较大冲击水压。 |
| 英文摘要: |
| A new type air-valve surge tank for controlling liquid column separation occured to water supply projects is developed. It consists of a vertical short pipe and air valves installed on the top. The tanks are installed on the main to form a series of local convexities. They are full of water during normal operations. As soon as the water pressure drops to under the atmospheric pressure，air will be sucked into the tank through the air valve to form an air chamber. The air in the tank will be released slowly while the water pressure is greater than the atmospheric pressure. The application indicates that the tank not only can control the negative pressure during hydraulic transients，but also the positive pressure. |
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