CAJ | 학술논문

【目的】为给即热式热水器的底部加强板添加外加电流阴极保护系统，并获得均匀的电场分布。【方法】利用有限元法对两种型号即热式热水器底部加强板，在不同辅助阳极排布方式下的阴极保护电场进行数值模拟。【结果】在与钢条垂直方向，当辅助阳极位于热水器内胆高度的4/9处时，底板电位开始达到均匀分布。在与钢条平行方向，当阳极在热水器内胆长度的11/18到13/18的范围内，底板左右两端电位分布较均匀。随着辅助阳极数量的增加，底板表面的电位分布更为均匀，但对底板的电位数值变负未有太大的影响。将求解的平面空间分层并折算成直线，以辅助阳极所在的位置为中心，阳极两边均出现电位自衰减现象。【结论】采用2个辅助阳极较为经济。阳极的最佳位置区间为一个顶点坐标固定的长方形域。可根据衰减曲线，通过调节辅助阳极的电位，使离阳极最远的两个末端的电位达到保护要求。
【목적】위급즉열식열수기적저부가강판첨가외가전류음겁보호계통，병획득균균적전장분포。【방법】이용유한원법대량충형호즉열식열수기저부가강판，재불동보조양겁배포방식하적음겁보호전장진행수치모의。【결과】재여강조수직방향，당보조양겁위우열수기내담고도적4/9처시，저판전위개시체도균균분포。재여강조평행방향，당양겁재열수기내담장도적11/18도13/18적범위내，저판좌우량단전위분포교균균。수착보조양겁수량적증가，저판표면적전위분포경위균균，단대저판적전위수치변부미유태대적영향。장구해적평면공간분층병절산성직선，이보조양겁소재적위치위중심，양겁량변균출현전위자쇠감현상。【결론】채용2개보조양겁교위경제。양겁적최가위치구간위일개정점좌표고정적장방형역。가근거쇠감곡선，통과조절보조양겁적전위，사리양겁최원적량개말단적전위체도보호요구。
Objective]Aiming to design the impressed current cathodic protection system for the bottom steel plate of a constant water heater and to obtain the uniform electric field dis-tribution.[Methods]The finite element method was used to calculate electric field from ca-thodic protection of the strengthening plate based on different arrangements of auxiliary an-odes.[Results]When the auxiliary anodes being vertical to the steel bar were placed at 4/9 of the heater height,the potential began to be uniformly distributed.When the anode being parallel to the steel bar were placed at 1 1/18 to 13/18 of the heater length,the potential dis-attenuating phenomenon about potential.[Conclusion]So two auxiliary anodes were enough and economic.The anodes were preferably placed in a rectangular shape with specific coordi-nates.According to the attenuating curve,potentials of two ends can be adjusted to meet the requirement of standard.