管道内海水流动特性对碳钢阴极保护影响的试验与数值模拟研究

吴昉赟, 乔睿鑫, 李旭宁, 尚浩杰, 陆丰华, 周澄, 王欣, 董亮

Influence of Seawater Flow Characteristics Inside Pipelines on Cathodic Protection of Carbon Steel Pipelines-Experiment and Numerical Simulation

WU Fangyun, QIAO Ruixin, LI Xuning, SHANG Haojie, LU Fenghua, ZHOU Cheng, WANG Xin, DONG Liang

表1 弯头不同位置处20#碳钢阻抗数据

Table 1 20# carbon steel impedance data at different positions of the elbow

Test site Polarization potential E / V RS / Ω·cm2 CPE-T / F·cm-2 CPE-P / F·cm-2 Rp / Ω·cm2 B1 -0.7 14.23 3.121 × 10-3 0.657 121.4 -0.8 14.13 2.284 × 10-3 0.786 105.7 -0.9 14.00 1.348 × 10-3 0.752 146.2 -1.0 15.12 9.473 × 10-4 0.843 130.3 -1.1 15.62 1.043 × 10-3 0.774 124.0 -1.2 17.98 8.996 × 10-4 0.774 128.5 B2 -0.7 18.74 2.252 × 10-3 0.696 43.4 -0.8 18.74 2.264 × 10-3 0.679 89.73 -0.9 20.13 2.398 × 10-3 0.848 87.32 -1.0 14.99 1.466 × 10-3 0.830 93.00 -1.1 20.60 9.119 × 10-4 0.876 86.83 -1.2 25.56 7.404 × 10-4 0.752 88.50 B3 -0.7 12.79 1.104 × 10-3 0.641 97.80 -0.8 12.8 1.326 × 10-3 0.708 96.19 -0.9 11.36 1.246 × 10-3 0.789 92.23 -1.0 11.58 7.838 × 10-4 0.745 93.62 -1.1 12.29 7.675 × 10-4 0.736 94.93 -1.2 16.26 1.147 × 10-3 0.729 96.90 C1 -0.7 22.37 1.304 × 10-3 0.682 66.19 -0.8 17.44 1.433 × 10-3 0.748 144.6 -0.9 23.74 1.147 × 10-3 0.751 147.2 -1.0 17.78 1.352 × 10-3 0.842 137.10 -1.1 16.75 9.062 × 10-4 0.849 135.6 -1.2 22.37 1.304 × 10-3 0.682 133.5 C2 -0.7 15.51 1.794 × 10-3 0.573 69.12 -0.8 15.4 1.912 × 10-3 0.634 113.2 -0.9 16.55 1.640 × 10-3 0.817 101.2 -1.0 14.48 8.132 × 10-4 0.795 120.1 -1.1 14.14 9.012 × 10-4 0.681 116.7 -1.2 29.34 7.146 × 10-4 0.988 108.4 C3 -0.7 7.54 2.350 × 10-3 0.690 42.32 -0.8 7.73 2.077 × 10-3 0.771 100.1 -0.9 7.84 1.666 × 10-3 0.783 102.7 -1.0 8.44 1.015 × 10-3 0.904 101.6 -1.1 7.76 9.915 × 10-4 0.723 104.8 -1.2 9.59 1.929 × 10-3 0.656 125.4