| 李建秋,向利,杨阳,陈川,龚芳.海洋环境氯离子沉降率及腐蚀严酷度评价研究[J].装备环境工程,2021,18(2):103-107. LI Jian-qiu,XIANG Li,YANG Yang,CHEN Chuan,GONG Fang.Evaluation of Sedimentation Rate and Corrosion Rate of Chloride Ions in Marine Environment[J].Equipment Environmental Engineering,2021,18(2):103-107. |
| 海洋环境氯离子沉降率及腐蚀严酷度评价研究 |
| Evaluation of Sedimentation Rate and Corrosion Rate of Chloride Ions in Marine Environment |
| 投稿时间：2020-08-24 修订日期：2020-09-21 |
| DOI：10.7643/issn.1672-9242.2021.02.018 |
| 中文关键词: 腐蚀速率 银片 氯离子 沉降率 环境等级 防腐防护中图分类号:TG172.5 文献标识码:A 文章编号:1672-9242(2021)02-0103-05 |
| 英文关键词:corrosion rate silver plate chloride ion sedimentation rate environmental grade corrosion protection |
| 基金项目:国家重点研发计划项目(2017YFB0903700) |
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| Author | Institution |
| LI Jian-qiu | China Southern Power Grid Power Generation Co., Ltd., Guangzhou 510630, China |
| XIANG Li | State Key Laboratory of Environmental Adaptability for Industrial Products, China Electric Institute, Guangzhou 510663, China |
| YANG Yang | State Key Laboratory of Environmental Adaptability for Industrial Products, China Electric Institute, Guangzhou 510663, China |
| CHEN Chuan | State Key Laboratory of Environmental Adaptability for Industrial Products, China Electric Institute, Guangzhou 510663, China |
| GONG Fang | Guangdong Hydropower Planning & Design Institute, Guangzhou 510635, China |
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| 中文摘要: |
| 目的 通过大气环境氯离子沉降率和严酷度评价研究，为海水抽水蓄能电站设备防腐蚀设计提供数据支撑。方法 主要利用干片法和银测试片法对海南某地区远海a点和近海b点3—6月大气中的氯离子沉降率和腐蚀速率进行研究。结果 干片法数据分析发现，每月b点氯离子沉降率高于a点，其平均温度低于a点，平均相对湿度高于a点。银片数据分析发现，b点环境较为严苛，其氯化银腐蚀膜厚于a站，其中a点腐蚀速率等级为G2，而b点除3月外腐蚀速率等级均达到G3。对比数据发现，干片法获得的每月盐雾沉降率变化趋势与银片法每月腐蚀速率变化趋势一致。结论 温度、湿度是影响大气氯离子沉降率的重要因素，而大气盐雾含量是影响设备腐蚀速率的重要影响因素，为确保海水抽水蓄能电站设备安全可靠运行，需采用控温、控湿以及除盐雾技术降低服役环境腐蚀严酷度。 |
| 英文摘要: |
| This paper evaluates and studies the sedimentation rate and corrosion rate of chloride ions in marine environment, to provide data support for the corrosion protection of seawater pumped storage power station equipment. The sedimentation rate and corrosion rate of atmospheric chloride ions at station a far from the shore and station b near the shore in a certain area of Hainan from March to June are analyzed mainly by the dry plate method and silver test plate method From the analysis of data obtained by the dry plate method, we can see that the chloride ion sedimentation rate at station b is higher than that at station a, and its average temperature is lower than that at station a, while its average relative humidity is higher than that at station a. The analysis of data obtained by the silver plate method shows that the environment of station b is harsher, the corrosion film of station b is thicker than that of station a. The corrosion rate of the station a arrives at G2, while that of the station b reaches to G3 except for March. It is found that the variation trend of salt spray sedimentation rate obtained by dry plate method is consistent with the corrosion rate obtained by silver plate method. It can be concluded that the change of temperature and humidity is an important factor for the sedimentation rate of chloride ions, such as controlling the environment temperature and humidity, and using some salt fog purification equipment to reduce the corrosion severity of the service environment. |
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