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Water distribution network is an important part of water supply system, purified water through intricate underground pipe network, to the user terminal. General waterworks water quality can meet the national drinking water standards, but through the water supply network to the user, the water stays in the water supply network in a period of time, during this period will be secondary pollution. Pipe network in the \Comparison of several pipe cleaning methods drawn, pressure pulse method is a very good pipe flushing method. Flushing pressure pulse method to improve efficiency, reduce secondary pollution of water pipe network has important theoretical and practical significance. \Growth ring formation mechanism of complex, both physically precipitation, electrochemical corrosion of pipelines, chemical stability, biological stability, in terms of the metal tube, but also by iron bacteria, sulfate-reducing bacteria corrosion. \ability to influence through the water pipes, water pressure, increasing the water supply and drain energy consumption. Through the test platform designed to build on the pressure pulse pipeline flushing method by studying the pattern of pulses. Experimental results show that the gas pressure and water flow to determine certain circumstances, to maintain gas time constant, inflation time, the initial flow rate, pressure increases rapidly, the late slow growth, and in the time of 5s, when inflated, the flow rate , the pressure reaches a maximum value. Remain unchanged inflation time, with time to stop the growth of gas inside the tube of the flow rate, pressure linearly increasing trend, pipe flow turbulence intensified, flushing effect is enhanced; gas pressure in certain cases, changing the water flow, to get water supply flow and pipe flow velocity, a linear relationship between the pressure; water flow in certain cases, changing the gas pressure, gas pressure and the pipe to get the flow velocity, a linear relationship between the pressure. Experimental pipeline gas-liquid two-phase numerical simulation. For experimental pipe sections were established straight inlet pipe and elbow mesh model. Using the method for solving unsteady separation of straight pipe at the inlet gas, water two-phase flow is simulated in 0.0005s, 0.0010s, 0.0015s and 0.0020s displays real-time results. For gas and water two-phase flow pattern analysis, research results under certain boundary conditions, the experimental pipe sections will form a \\Using the steady-state solver pipe flow field, the pressure on the inside and outside of pipe and tube velocity distribution studies have shown that bending of the \
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