Study On The Effect Of Water Hammer Protection Device Used For Pipeline Water Hammer Protection

Due to rapidly development of the industry and the improvement of people’s living standard, water demand of the life and the production is increasing.However, in our country, distribution of water has a special uneven spatial.In some parts of the shortage of water resources has been restricted to the local economic development. In order to ensure water supply, alleviate the contradiction of water supply, inter-basin water transfer, there has more and more long distance water conveyance project. In long distance water conveyance project of gravity flow, the phenomenon often occurs when the pipeline on the downhill, crossing the river, embankments, railway and so on with laying long distance along the terrain.It bring great harm to pipeline security. In order to ensure the safe operation of pipeline, should choose safe and reliable, economic and efficient water hammer protection measures.In this paper, based on the research situation of domestic and foreign water hammer, this paper briefly introduces the basic theory of water hammer and its calculation equation. After separate categories, the paper detailed instructs the working principle, characteristics and the boundary conditions about the water hammer protection of pressure protection device such as exhaust valve, slow close check valve, pressure relief valve, decompression constant pressure valve, pressure regulating valve tower and repair and so on. Through the calculation of water hammer of the characteristic line method, and combined with the boundary conditions of various kinds of relief protection devices, using C+ + program for computer programming computing platform.The end of this paper to Xinjiang JK water case, it calculate all kinds of working condition of unsteady flow.Through a large number of calculation data and charts, and For different pressure relief protection water hammer protection effects of the pipes.For different pressure relief protection water hammer protection effects of the pipes, than pipeline optimal operating conditions are selected, and the optimum schemes for the water hammer protection measures.in order to choose more economic and more according engineering to water hammer protection measures.