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In the hydraulic transition process of remote and up-and-down water supply project, vaporization and column separation easily occur, which may cause water hammer damage to the pipeline. In this paper, the principle and boundary conditions of air valve and one-way surge tank were analyzed. The numerical simulation of hydraulic transition process was conducted on the calculation model of gas-liquid...
The water hammer occurs frequently in the water conveyance system, especially in the long distance system. In order to prevent the occurrence of vaporization phenomenon in the pipelines caused by the power-off water hammer, installation of air valve is the most common water hammer protection measure. The air valve should not only discharge the air of the tube when the station start the pump, but also...
This paper analyzes a multi-valve protection of water hammer in long-distance Pipelines based on simulated calculation of the water transition process for a water supply project. Against the problems shown by the results, measures of a multi-valve protection have been taken. As the pipeline has a serious negative pressure phenomenon and thus non-continuous flow of fluid, air valves have been installed...
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