沉降罐用可更换牺牲阳极的研制与应用
Development and Application of Replaceable Sacrificial Anode for Settling Tank
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- 引用格式:
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郭亮,张新发,吴保玉.沉降罐用可更换牺牲阳极的研制与应用[J].天然气与石油,2019,37(2):103-107.doi:10.3969/j.issn.1006-5539.2019.02.017
Guo Liang, Zhang Xinfa, Wu Baoyu.Development and Application of Replaceable Sacrificial Anode for Settling Tank[J].Natural Gas and Oil,2019,37(2):103-107.doi:10.3969/j.issn.1006-5539.2019.02.017
- DOI:
- 10.3969/j.issn.1006-5539.2019.02.017
- 作者:
- 郭亮1,2 张新发1,2 吴保玉1,2
Guo Liang1,2 Zhang Xinfa1,2 Wu Baoyu1,2
- 作者单位:
- 1. 中国石油集团川庆钻探工程有限公司工程技术研究院,2. 低渗透油气田勘探开发国家工程实验室
1. CNPC CCDC Drilling Engineering Technology Research Institute; 2. National Engineering Laboratory for Exploration and Development of Low-Permeability Oil & Gas Fields
- 关键词:
- 更换;牺牲阳极;沉降罐;保护
Replacement; Sacrificial anode; Settling tanks; Protection
- 摘要:
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针对沉降罐用普通阳极现场更换程序繁琐等更换难题,设计研制出一种用于原油沉降罐内壁防腐的可更换牺牲阳极并配套以更换方法。可更换牺牲阳极由可更换单元、焊接铁脚、防腐扣盒等组成,牺牲阳极材料选用铝-锌-铟系合金。对2 000 m3沉降罐罐壁内部高度4 m以下区域和罐底内部进行保护设计,设计寿命8～10 a,最小保护电位-0.85 V,共需62支阳极。首次使用时,需进行焊接安装,更换时,只需拆卸螺栓即可进行,无需动电动火,可有效减轻常规牺牲阳极更换作业带来的工作强度，减少安全隐患。该研究对于管线、船舶等处的牺牲阳极更换作业具有一定借鉴意义。
In order to solve the problem of replacement of common anodes used in settling tanks, a replaceable sacrificial anode for corrosion protection of the inner wall of crude oil settling tanks was designed and developed. The replaceable sacrificial anode consists of a replaceable unit, a welded iron foot, a corrosion-proof buckle box, etc.The material of sacrificial anode is an aluminum-zinc-indium alloy.The protection is applied to 4m below inner wall of the 2000m3settlement tank and the tank bottom floor, with the design life of 8 to 10 years, the minimum protection potential: -0.85V, a total of 62 anodes.When used for the first time, it needs to be installed by weldingand it can be replaced by removing the bolts withoutelectricity and fire, which can effectively reduce the work intensity and safety hazards caused by the conventional sacrificial anode replacement work.The research has certain reference significance for the replacement of sacrificial anodes in pipelines and ships.
