悬浮管道由于管道淤堵或者管道阀门启闭会在管道中产生水锤效应并导致管道产生振摆现象，水锤压力和振摆幅度会受到管流流速、管道阀门关闭时间和管道长度富余度的影响。为了研究上述因素影响，开展了悬浮管道物理模型试验，试验过程中监测了管道水锤强度和振摆幅度。试验结果表明：阀门关闭时间越短，管道流量越大，悬浮管道水锤压力和振摆幅度则越大；当阀门关闭时间过小和管道流量过大时，还会造成管道破裂；管道水锤压力会随着管道长度富余度的增长而增大，而摆动程度则在一定范围内会减小。
Abstract
Water hammer and piping vibration will be caused when the suspended pipelines are blocked up or closed. The caused water hammer pressure and vibration rate are related to the flow velocity of the water in the pipeline, the closing time of the pipeline valve and the surplus degree of the pipeline length. To study the effects of those factors on the water hammer pressure and vibration rate, model tests of suspended pipeline are carried out. In the test, the pressure of the water hammer and vibration rate of the pipeline valve are monitored. The test results show that the increase in the valve closing time and the flow velocity would increase the water hammer pressure and vibration rate of the suspended pipeline. The suspended pipeline would burst when the valve closing time is too small and the flow velocity is too large. The water hammer pressure of the pipeline increases with the increase in the surplus degree of the pipeline length, while vibration rate decreases within a certain range of the surplus degree.
关键词
悬浮管道 /
水锤压力 /
振摆幅度 /
阀门关闭时间 /
富余度
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Key words
suspended pipelines /
water hammer /
vibration rate /
valve closing time /
surplus degree
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基金
中央级公益性科研院所基本科研业务费专项项目;国家自然科学基金青年科学基金项目;十三五国家重点研发计划项目;十三五国家重点研发计划项目
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