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首页> 外文期刊>Nature reviews Cancer >Water hammer protective performance of a spherical air vessel caused by a pump trip
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Water hammer protective performance of a spherical air vessel caused by a pump trip

机译：由泵跳闸引起的球形空气船的水锤保护性能

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The use of air vessels is an effective measure to control water hammer in a long-distance water supply system. The traditional shape of such vessels is cylindrical. In this paper, an innovative spherical air vessel is proposed to improve the force characteristics of the tank. A mathematical model of the spherical air vessel was established using the method of characteristics. A comparison was performed of water-hammer protection performance between the spherical air vessel and the cylindrical air vessel based on a practical water supply project. Furthermore, a sensitivity analysis on the parameters of the spherical air vessel was performed. The results showed that the spherical air vessels had better protective performance compared with the cylindrical air vessels. Under the same protection requirements, the spherical air vessel can reduce the total volume and surface area by more than 10%. In addition, for a fixed volume of the spherical air vessel, the protective effect improves with the increase of the initial gas volume. Increasing the connecting pipe diameter of the air vessel is beneficial for low-pressure protection, whereas it is adverse to high-pressure protection; in contrast, altering the installation elevation has little effect on water-hammer protection.
机译：空气容器的使用是控制长距离供水系统中的水锤的有效措施。这种血管的传统形状是圆柱形的。本文提出了一种创新的球形空气容器，以改善罐的力特性。使用特性方法建立球形空气容器的数学模型。基于实用供水项目对球形空气容器和圆柱形空气容器之间的水锤保护性能进行了比较。此外，进行对球形空气容器参数的灵敏度分析。结果表明，与圆柱形空气容器相比，球形空气容器具有更好的保护性能。在相同的保护要求下，球形空气容器可以将总体积和表面积降低超过10％。另外，对于球形空气容器的固定体积，保护效果随着初始气体容积的增加而改善。增加空气容器的连接管道直径有利于低压保护，而它与高压保护不利;相比之下，改变安装高程对水锤保护影响不大。

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