彭泽煊,任厚珉.油温对海底输油管线阴极保护的影响[J].表面技术,2015,44(1):136-140.
PENG Ze-xuan,REN Hou-min.Effect of Oil Temperature on the Cathodic Protection of Submarine Oil Pipeline[J].Surface Technology,2015,44(1):136-140 |
| 油温对海底输油管线阴极保护的影响 |
| Effect of Oil Temperature on the Cathodic Protection of Submarine Oil Pipeline |
| 投稿时间：2014-09-08 修订日期：2015-01-20 |
| DOI： |
| 中文关键词: 偶合电极 保护电位 偶合电流 牺牲阳极 |
| 英文关键词:coupling electrode protection potential coupling current sacrificial anode |
| 基金项目: |
| 作者 | 单位 |
| 彭泽煊 | 中海石油(中国)有限公司 湛江分公司, 广东 湛江 524057 |
| 任厚珉 | 中海石油(中国)有限公司 湛江分公司, 广东 湛江 524057 |
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| Author | Institution |
| PENG Ze-xuan | China National Offshore Oil Corporation China Limited Zhanjiang, Zhanjiang 524057, China |
| REN Hou-min | China National Offshore Oil Corporation China Limited Zhanjiang, Zhanjiang 524057, China |
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| 中文摘要: |
| 目的 研究油温对海底输油管道阴极保护的影响。 方法 通过模拟海水实验,参照 GB/ T17848—1999 实验方法,分析铁电极、铝电极和偶合电极在不同油温下的腐蚀电位和偶合电流的变化规律,测试 25 ℃和 75 ℃海水中牺牲阳极的工作电位,并计算阳极的电流效率,观察阳极的腐蚀形貌，结果在 25 ~75 ℃范围内,铝电极随着温度升高自腐蚀电位负正℃,铁电极随着温度升高自腐蚀电位负℃。 偶合电位正℃,偶合电流显著增大。 结论 与 25 ℃相比,牺牲阳极在 75 ℃ 海水中,保护电位下降,阴极保护效果降低。 |
| 英文摘要: |
| Objective To study the effects of the oil temperature on cathodic protection devices of submarine oil pipeline. Methods Referring to the testing standard GB/ T 17848—1999, the changing rules of corrosion potential and coupled current of the iron electrode, aluminum electrode and coupling electrode at different oil temperatures were analyzed through simulated seawater experiment. The working potentials of sacrificial anode at 25 ℃ and 75 ℃ were tested, and the current efficiency of anode was calculated. The corrosion morphology of anode was observed. Results In the range of 25 ℃ to 75 ℃, the corrosion potential of aluminum electrode increased, the corrosion potential of iron electrode decreased, the coupled potential shifted to positive value and the coupled current significantly increased with increasing temperature. Conclusion The protection potential and protection current efficiency of sacrificial anode decreased in 75 ℃ seawater when compared to those at 25 ℃. |
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