
[物化] 外加電流陰極防護
Main application:It is Widely applied to the impressed current cathodic protection of oil drilling platform at sea, buried pipeline and cables under ground.
主要用途: 高矽鑄鐵陽極廣泛應用于海上石油鑽井平台、地下管道、地下電纜等設施的外加電流的陰極保護。
This article presents the selection and application of PID control which acts as the intelligent control core in the ship's impressed current cathodic protection system.
本文介紹了在艦船外加電流的陰極保護系統中,作為智能控制核心的PID控制的選擇與應用。
There are two basic methods of applying cathodic protection to a metallic structure in contact with an electrolyte. These are galvanic cathodic protection and impressed current cathodic protection.
有兩種對電解質中金屬表面提供陰極保護的基本方法,它們是原電池陰極保護和外加電流陰極保護。
According to comparative study, it is believed that it is more reliable to use impressed current cathodic protection system f…
認為對具有高電阻墊層的大型儲罐罐底,采用外加電流陰極保護系統,較為可靠。
A 1∶100 physical scale model of a vessel is established and used to study the distribution of the potential in the impressed current cathodic protection(ICCP) system of a hull′s double-zones.
建立某船1∶100縮比模型,研究了船體雙區域外加電流陰極保護系統中船體保護電位分布。
Auxiliary anode is the key part of impressed current cathodic protection system.
其中外加電流的關鍵部件是輔助陽極。
In the well casing cathodic protection system, impressed current could effectively depress external corrosion of the casing.
在油井套管陰極保護系統中,外加陰極電流可以有效地抑制油井套管外壁的腐蝕;
Normally cathodic protection is acquired by sacrificial anodes or impressed current.
陰極保護常采用犧牲陽極法和外加電流法。
Specific cathodic protection methods, including titanium based anode for impressed current system and Zn sheet anode for sacrificial anode system, are introduced.
重點介紹了陰極保護的具體做法,一種是以钛基陽極作為輔助陽極的外加電流法,另一種是采用鋅闆陽極的犧牲陽極法。
The effects of the impressed direct current ( DC) on the performance of the sacrificial anode were stu***d in a simulated cathodic protection ( CP) system.
通過電化學技術研究了外加直流電流與犧牲陽極陰極保護聯合使用時,外加直流對犧牲陽極保護效果的影響。
The cathodic protection tests for internal surface protection of the intake steel pipes with different internal diameters by impressed current and sacrificial anode methods are carried out.
采用外加電流和犧牲陽極對兩種不同内徑的引水鋼管内壁進行陰極保護試驗。
This product scope including soil directly bury cable tray installed in the submerged in water and Marine mud buried in the free flow of water device laid impressed current cathodic protection system.
本産品的適用範圍包括土壤中直接埋設、電纜橋架中安裝、浸沒在水中、埋設在海洋泥漿中和自由流動海水裝置中鋪設的外加電流陰極保護系統。
The corrosion of seawater pipes can be effectively controlled in virtue of impressed current cathodic protection.
外加電流陰極保護技術可以有效地抑制海水管道的腐蝕。
Impressed current cathodic protection technique is a kind of efficient measures for avoiding and slower the metal corrosion, so it was used more and more widely.
強制電流陰極保護技術是防止和緩解金屬腐蝕的有效措施,因此得到了廣泛應用。
Potentiostat, as the impressed current cathodic protection power, has been widely used in underground metallic pipeline anticorrosion.
恒電位儀作為陰極保護電源,被廣泛應用于埋地金屬管道的防腐蝕工程中。
impressed current(外加電流)是電化學防腐技術中通過外部電源向被保護金屬施加直流電的系統。該系統利用整流器或恒電位儀主動調整電流方向,使金屬表面形成陰極極化狀态,抑制氧化反應發生。典型應用包括埋地管道、船舶外殼和儲油罐的防腐工程,例如美國腐蝕工程師協會(NACE International)标準RP0169-2002中明确規定了其操作規範。
cathodic protection(陰極保護)是通過降低金屬電化學電位實現防腐蝕的技術手段,分為外加電流型和犧牲陽極型兩類。其核心原理基于金屬在電解質中的電偶序排列,通過強制被保護金屬成為陰極,使腐蝕反應轉移到輔助陽極材料上。國際标準化組織ISO 15589-1:2015詳細定義了該技術在油氣管道中的應用要求。
impressed current cathodic protection(外加電流陰極保護)作為主動防護技術,相比傳統犧牲陽極法具有更高電流輸出能力和更長保護周期。英國标準BS EN 12954:2001指出,該系統特别適用于高電阻率環境或大型基礎設施保護,例如跨海橋梁樁基的防腐蝕工程,通過钛混合金屬氧化物陽極等高效材料實現精準電位控制。美國能源部2020年技術報告顯示,該技術可将金屬結構壽命延長至50年以上。
Impressed Current Cathodic Protection(ICCP)即“外加電流陰極保護”,是一種通過外部電源主動提供保護電流的防腐蝕技術。以下為詳細解析:
核心原理
利用直流電源(恒電位儀)向被保護的金屬結構(如船體、管道)施加電流,使其成為陰極,從而抑制金屬失去電子(即氧化反應)。輔助陽極(如鉑钛合金)作為電流輸出端,通過海水或土壤等介質構成回路。
系統組成
應用場景
主要用于大型金屬設施,如船舶(船體、舵機)、埋地管道、儲罐等。例如船舶在海水環境中,ICCP系統可有效對抗電化學腐蝕。
與犧牲陽極法的區别
|對比項 |ICCP |犧牲陽極法 |
|------------------|------------------------|------------------------|
| 電流來源 | 外部電源供電 | 陽極自身氧化反應 |
| 適用規模 | 大型、高腐蝕環境 | 小型或局部保護 |
| 維護需求 | 需定期監測和調整 | 陽極消耗後需更換 |
優缺點
ICCP通過主動控制電流實現高效防腐蝕,是工業領域的關鍵防護技術,尤其適用于船舶和長距離管道等場景。如需更詳細案例,可參考、5、10的完整内容。
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