核电厂板式热交换器的泄漏原因
Leakage Reasons for Plate Heat Exchanger in Nuclear Power Plant
摘 要
采用冲刷腐蚀试验研究了某核电厂SEM板式热交换器的泄漏原因。结果表明：穿孔泄漏的直接原因是海水中泥沙含量大；泥沙等在流道内沉积，造成流道变窄，使得流速增大是穿孔泄漏的根本原因。
冲刷腐蚀
核电厂
措施
plate heat exchanger
erosion corrosion
nuclear power plant
measure
Abstract
Erosion corrosion test was used to study the leakage reason for a plate heat exchanger in a nuclear power plant. The results revealed that the direct cause of perforation was the high sand contents in sea water. And the root cause of perforation was the deposition of sand in the flow channel, resulting in a narrow channel, which makes the flow rate increase.
中图分类号 TG172 DOI 10.11973/fsyfh-201707003
所属栏目 核电设备材料防护
基金项目
收稿日期 2016/4/29
修改稿日期
网络出版日期
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引用该论文: LAI Ping,MENG Mingqiang,ZHANG Lefu. Leakage Reasons for Plate Heat Exchanger in Nuclear Power Plant[J]. Corrosion & Protection, 2017, 38(7): 499
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参考文献
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【3】杨冬. 田湾核电站凝汽器真空系统板式热交换器缺陷及处理[J]. 中国核电,2015(1):34-37.
【4】孟铭强,张乐福,韩光辉,等. 闭式冷却水板式换热器的应用与维护[J]. 发电设备,2014(6):435-437.
【5】朱娟,张乔斌. 冲刷腐蚀的研究现状[J]. 中国腐蚀与防护学报,2014,34(3):199-210.
【6】李平. 酸性液固两相流中不锈钢冲刷腐蚀行为的研究[D]. 武汉:华中科技大学,2006.
【7】XU J,ZHUO C Z,HAN D Z,et al. Erosion-corrosion behavior of nanoparticle reinforced Ni matrix composite alloying layer by duplex surface treatment in aqueous slurry environment[J]. Corros Sci,2009,51(5):1055-1068.
【8】ZHANG G A,XU L Y,CHENG Y F. Investigation of erosion-corrosion of 3003 aluminum alloy in ethylene glycol-water solution by impingement jet system[J]. Corros Sci,2009,51(2):283-290.
【9】MENG H,HU X,NEVILLE A. A systematic erosion-corrosion study of two stainless steels in marine conditions via experimental design[J]. Wear,2007,263(1/6):355-362.
【10】HU X,NEVILLE A. An examination of the electrochemical characteristics of two stainless steels (UNS S32654 and UNS S31603) under liquid-solid impingement[J]. Wear,2004,256(5):537-544.
【11】ZHENG Y G,YU H,JIANG S L,et al. Effect of the sea mud on erosion corrosion behaviors of carbon steel and low alloy steel in 2.4% NaCl solution[J]. Wear,2008,264(11/12):1051-1058.
【12】刘新宽,方其先. 两种不锈钢冲刷腐蚀的研究[J]. 化工机械,1998,25(1):12-15.
【13】吴成红,甘复兴. 金属在两相流动水体中的冲刷腐蚀[J]. 材料保护,2000,33(4):33-35.
【14】徐哲. 液固两相流条件下P110钢冲刷腐蚀研究[D]. 大庆:东北石油大学,2011.
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