Small Annular Pipe Cut-off Water Hammer Calculation And Protection Research

With the expansion of city, the water supply network system is becoming more and morebigger. Water supply network is one of the most important infrastructure of modern city, alsois an important part of urban water supply system, relative to the safety of water supply pipenetwork project requirements also more and more high, urban water supply network has a lotof drawbacks, however, burst, exposure accidents occur frequently. At present, the waterhammer in long distance water conveyance project of hazard have been seriously, it isincreasingly in-depth studies on analysis and calculation, and for water supply pipe networkof water hammer accident reason research very little. Based on the research results alreadyobtained by a continuous flow transient theory as the foundation, focus on water supplynetwork flows are bridging the harm of water hammer and its protective measures.Summarizing predecessors’ research on gas liquid two phase flow, on the basis of thispaper expounds the basic principle and method to compute the water hammer protection, andestablish the appropriate boundary conditions. Paper cut-out water hammer protection ofcomputational mathematics model is established, and instance through Rio DE park waterbooster water hammer calculation analysis. And based on the research achievements of longdistance water conveyance project of water hammer protection, and briefly expounds thesmall water supply pipe network of water hammer protection calculation program compiled,binding force DE park instance of single water source for the water conveyance project ofwater supply network cutoff of water hammer in vc++language programming andsimulation run, through the comparative analysis of different schemes, finally draw a singlewater source of water supply network water hammer protective measures of the bestsolutions.Of the research of this paper for small annular pipe network and water hammerprotection provides reference value and significance, as well as the optimization of urbanwater pipe network of water hammer protection measures has a far-reaching influence.