Research On Water Hammer Control Technology Of Closed Transportation Of Crude Oil Pipeline From Daqing To Jinxi

The process system of long-distance pipeline is a unified and continous system.During the course of the long distance oil transportation,the abnormal pump stopping&closing of the valves incautiously in the initial and medium station may lead to water hammer.When the water hammer wave propagates along pipeline,it will lead to an excessive pressure on the pipeline partly.This will cause pipeline breaking&equipment damaging.Liquid column separation will be a serious threat to the safety operation of pipelines.So to protect the pipeline not be damaged at the accident conditions,it is very important to make a water hammer analysis,and then according to the analysis to give out a feasibility safety protection method and make a corresponding processing.Give out the pump running calculation formula through the hydraulic analysis of the closed transportation of the pipeline and the study of the pump running scheme,and give out the pump running scheme of the oil pipeline from Daqing to Jinxi.According to the character of the variable frequency pump,give out two calculations formulas of the energy saving,one is pump character calculation method,the other is the pipeline calculation method.And then give out the effective of the energy saving of the oil pipeline from Daqing to Jinxi.Give the water hammer simulation of the valves shutdown,pump stopping,power failure,fire situation of the initial station,medium station,give out the water hammer simulation that the valve is shutdown at the terminal station of the trunk line and branch line,the RTU valve is shutdown and give out the water hammer simulation assuming there is a leak of the trunk line or branch line.Make the results of water hammer according to the water hammer simulation,and provide the water hammer control scheme at all kinds of accident situations of Daqing to Jinxi Oil Pipeline.