Analysis Of Seismic Response Of Passive Tank Of Nuclear Power Plant

With the rise of the nuclear power industry,nuclear power industry also accompanied by negative effects,such as: the Three Mile Island nuclear power plant in America and Ukraine’s Chernobyl nuclear power plant accident,the accident aroused great attention by the nuclear power group,then the nuclear power group improve their vigilance on nuclear safety issues.They begin with thorough research and analysis of how to prevent such incidents from happening again,and then product the third generation nuclear power units,which means the use of passive safety system,prevent and mitigate the serious accidents and improve the safety and reliability of nuclear power industry.However,as early as the last century 60’s,engineering has been increased emphasis on the fluid solid coupling problem,but there is less research on the problem of the impact of the earthquake,the impact of the earthquake happens on the nuclear power plant of liquid sloshing in passive tank.This paper based on the seismic design of PCS passive drainage tank,which root in one generation’s shield building of safety shell of nuclear power plant,to analysis the size of energy and the effect of energy dissipation,which passive tank of nuclear power plant under the condition of different frequency.This paper mainly draws the following conclusions:(1)At the same acceleration,the maximum stress has nothing to do with the frequency of the wave.(2)According to the Mises stress chart of three wave analysis,the energy consumption of PCS passive gravity drainage tank is mainly in the simulation of the liquid in the tank.(3)Reasonable use of CEL technology,in the calculation of the nuclear power plant passive water tank,the water sloshing problem must be taken into account.(4)With the same frequency of El Centro wave,under different ground motion inputs,El Centro wave energy increases with the increase of time,while his kinetic energy fluctuates with time increasing.(5)According to the stress curve,the energy dissipation of Centro El wave in the seismic 0.1g is obviously weakened,and the energy dissipation is fluctuating and the energy dissipation is not weakened under the action of 0.4g earthquake.(6)computational finite element direct simulation of the AP1000 nuclear power plant containment non force fluctuation in the seismic response analysis of dynamic water tank,a powerful illustrates the calculation model of the finite element basis obtained corresponding maximum stress force of numerical accuracy can be.