Pipe network node flow measuring and dispatching method based on pressure monitoring

Abstract

A pipe network node flow measuring and dispatching method based on pressure monitoring comprises the steps that node pressure of a predetermined node in a pipe network is measured actually, and according to the measured node pressure, based on the discrete point spatial interpolation computing method, node water heads of all nodes are worked out; the pipe section flow of a predetermined pipe section is measured actually, coefficients of friction resistance of all flow measuring pipe sections are determined according to the actually measured pipe section flow and the worked-out node water heads, pipelines are grouped through the spatial clustering algorithm according to the coefficients of friction resistance of the pipe sections, and coefficients of friction resistance of all pipe sections are determined; according to the worked-out node water heads, the coefficients of friction resistance of the pipe sections, pipe lengths and pipe diameters, the pipe section flows of all the pipe sections are worked out; according to the material equilibrium principle, the node flows of all the nodes are worked out, and therefore pipe network model updating and checking, pipe network dispatching, leakage quantity analysis, leaking point positioning and other pipeline maintenance and operation management are conducted conveniently. By applying the method, energy consumption and loss due to leakage can be reduced substantially, and the pipeline management level is improved.

Description

technical field [0001] The invention relates to the calculation, analysis and scheduling of pipe networks in water supply systems, drainage systems, gas supply systems, heat supply systems, oil transportation systems, chemical industry and other liquid and gas supply systems, especially a pressure monitoring based flow of pipe network nodes Metering and Scheduling Methods. Background technique [0002] Archimedes of ancient Greece ( Since 287-212 BC) proposed the Archimedes’ law of hydrostatics, Leonardo da Vinci (Leonardo da Vinci, 1452-1519) proposed the principle of water waves and pipe flow, Evangelista .Torricelli (Evangelista Torricelli, 1608-1647) proposed Torricelli's law for the calculation of orifice outlet flow velocity, Isaac Newton (Isaac Newton, 1643-1727) proposed Newton's fluid mechanics theory, Blaise Pascal (Blaise Pascal, 1623-1662) proposed Pascal's law about pressure, Daniel Bernoulli (Daniel Bernoulli, 1700-1782) proposed Bernoulli's equation, and th...

AI Technical Summary

Problems solved by technology

Due to the uncertainty of node flow and friction coefficient of pipe sections, the uncertainty of newly added pipelines, the uncertainty of valve switches, the uncertainty of fire and accident water, etc., the pipe network model can only be used for planning and design and engineering design plans, etc., limit the role of the pipe network model, resulting in waste of energy, increase in burst pipes and increase in water leakage for the maintenance and management of the pipe network

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