Study The Influence Of Rotational Inertia On Hydraulic Transients In Long-Distance Water Pipeline

With the rapid economic development and population growth, and uneven distribution of water resources coupled with climate change, regional water shortage is very serious.,Water transfer within a small area in the past have been difficult to meet the demand for water in some areas,,Urgent need to build a number of long-distance water transfer project to solve the problem of regional water resources uneven distribution,,In order to achieve the optimal allocation of water resources.Long distance pressure pipeline in the transition process is relatively complicated hydraulic,When pumping accidents,,If there is no reasonable water hammer protection, Distribution system is likely to occur such devastating incidents of water hammer., Computer simulation of the accident by stopping the hydraulic pump when the system transition process,,Predict water hammer boost for the selection of cost-effective to provide evidence of water hammer protection.。Currently,,Pump for hydraulic transition process depends on water pump inertia equation,。Pump inertia is to describe the operation of the hydraulic pump during the transition condition of the important parameters,However, the improvement and updating of existing machinery and electronic products faster,In the project to choose a suitable moment of inertia of the pump or how much of the flywheel installed,Long-distance water diversion project on the guiding significance.In this paper, examples of Port Sudan Water Transfer Project,Using C++ language computer program for calculating Water hammer analysis,Mainly analyzes the moment of inertia the pump stops pumping of rotational inertia on the results of calculation of water hammer.This analysis shows that Lift the water diversion project in the high moment of inertia using high-volume water pump, or by loading when the inertia flywheel,The outlet of the water hammer pump boost, buck reduced;Pump reversal reduce;The time of Service flow pumps appear negative is delayed;The time of Water Pump (maximum) number of emerging reversal is delayed;When Water supply project in the water column separation and drying and then to bridge the potential danger of water hammer occurs, By inertia or by volume of the pump unit mounted flywheel;The effects of water hammer is particularly evident。For the flat channel is no significant effect.