Study For Regional Cathode Protection Technology Based On Numerical Simulation La 291

This paper Lamadian Oil field 291 station,Buried pipeline,containers and serious corrosion structures,And now in lamadian cathodic protection system operation process,existing protection potential distribution uneven,some position appeared protection and less protection phenomenon.Laoer multi-purpose station the highest cathodic protection potential power to 1.7 V(CSE),the minimum potential power only 0.75 V(CSE),Are not satisfy the standard requirements.In addition,the site areas individual protect blind angle.The station regional cathodic protection technology did not achieve ideal result is due to domestic regional cathodic protection technology development is relatively backward,lack of suitable for the station complex situation specifications and standards,the selection of design parameters more depend on experience,lack of theoretical guidance,design the system of cathodic protection effect and forecasting is poorer.In view of this situation,the mathematical modeling,computer numerical simulation technology,advanced technology and regional combining cathodic protection design,through the calculation of cathodic protection potential and current density distribution,to evaluate the effect of protection,optimal protection scheme,the determination of reasonable anode type,shape,amount,such as the position parameters,so as to realize the optimization of regional cathodic protection design and scientific management.Currently,we have no control station 42 a cathodic protection measures,and carry out based on numerical simulation of the regional cathodic protection technology research,through the model research and programming,setting up regional cathodic protection system data feedback correction module,form regional cathodic protection optimization design system which,for without cathodic protection of the optimal station put forward cathodic protection design scheme and has been in operation for corrosion protection stand propose optimization reform plan,ensure cathodic protection potential distribution,reduce unnecessary investment,become cathodic protection as a scientific design of the empirical design to effective protection under stand the mainland facilities has the very vital significance.The main content of the study1.She stood in the numerical simulation of the 291 theoretical calculation model research.By establishing protection potential distribution and determine the equations describing regional cathodic protection potential boundary conditions,the mathematical simulation model.2.Numerical simulation in the boundary element calculation method,and the boundary element theory of basic research,the boundary integral equation of discrete and calculated by using nonlinear boundary corrosion electric field iterative method for numerical calculation.3.In 291 she stood calculation model test study polarization boundary conditions.Using measuring instruments,the extraction of the cathode,anode material tested,get all the materials of the polarization curve data.4.Carry out simulation technology laboratory test technology research.5.La 291 stand area cathodic protection optimization design software development.6.La 291 stand area for design of cathodic protection.