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假(Jia)如(Ru)储(Chu)存(Cun)介(Jie)质(Zhi)是(Shi)导(Dao)电(Dian)的(De),(?)那(Na)么(Me)平(Ping)底(Di)油(You)罐(Guan)内(Nei)部(Bu)的(De)阴(Yin)极(Ji)保(Bao)护(Hu)是(Shi)可(Ke)能(Neng)的(De)[17。(?)油(You)罐(Guan)底(Di)部(Bu)常(Chang)发(Fa)生(Sheng)水(Shui)与(Yu)导(Dao)致(Zhi)腐(Fu)蚀(Shi)的(De)杂(Za)质(Zhi)(盐(Yan)类(Lei)如(Ru)氯(Lu)化(Hua)物(Wu))的(De)分(Fen)凝(Ning)。(?)假(Jia)如(Ru)电(Dian)解(Jie)质(Zhi)能(Neng)够(Gou)覆(Fu)盖(Gai)油(You)罐(Guan)底(Di)部(Bu)到(Dao)足(Zu)够(Gou)深(Shen)度(Du),(?)那(Na)么(Me)按(An)照(Zhao)DIN 4119标(Biao)准(Zhun)进(Jin)行(Xing)设(She)计(Ji),(?)实(Shi)施(Shi)阴(Yin)极(Ji)保(Bao)护(Hu)能(Neng)够(Gou)防(Fang)止(Zhi)罐(Guan)底(Di)板(Ban)腐(Fu)蚀(Shi)。(?)燃(Ran)油(You)生(Sheng)产(Chan)企(Qi)业(Ye)和(He)供(Gong)应(Ying)商(Shang)通(Tong)常(Chang)会(Hui)采(Cai)取(Qu)措(Cuo)施(Shi)防(Fang)止(Zhi)电(Dian)解(Jie)质(Zhi)溶(Rong)液(Ye)进(Jin)人(Ren),(?)因(Yin)为(Wei)按(An)照(Zhao)DIN51603标(Biao)准(Zhun)它(Ta)们(Men)会(Hui)危(Wei)及(Ji)油(You)品(Pin)的(De)纯(Chun)度(Du),(?)并(Bing)且(Qie)会(Hui)损(Sun)坏(Huai)罐(Guan)底(Di)的(De)加(Jia)热(Re)电(Dian)路(Lu)。(?)无(Wu)论(Lun)如(Ru)何(He),(?)至(Zhi)今(Jin)还(Huan)没(Mei)有(You)一(Yi)例(Li)因(Yin)为(Wei)引(Yin)入(Ru)电(Dian)解(Jie)质(Zhi)溶(Rong)液(Ye)或(Huo)因(Yin)为(Wei)阴(Yin)极(Ji)保(Bao)护(Hu)的(De)反(Fan)应(Ying)产(Chan)物(Wu)而(?)造(Zao)成(Cheng)损(Sun)坏(Huai)。(?)

  有(You)关(Guan)方(Fang)面(Mian)已(Yi)经(Jing)起(Qi)草(Cao)了(Liao)一(Yi)份(Fen)题(Ti)为(Wei)“(?)燃(Ran)油(You)罐(Guan)内(Nei)部(Bu)阴(Yin)极(Ji)保(Bao)护(Hu)”(?)的(De)标(Biao)准(Zhun)建(Jian)议(Yi)稿(Gao),(?)说(Shuo)明(Ming)了(Liao)油(You)罐(Guan)内(Nei)部(Bu)阴(Yin)极(Ji)保(Bao)护(Hu)的(De)各(Ge)项(Xiang)要(Yao)求(Qiu)[18]。(?)包(Bao)含(Han)以(Yi)下(Xia)内(Nei)容(Rong):在(Zai)电(Dian)阻(Zu)率(Lu)不(Bu)大(Da)于(Yu)2000·(?)cm的(De)饮(Yin)用(Yong)水(Shui)中(Zhong)溶(Rong)解(Jie)碳(Tan)酸(Suan)氢(Qing)钠(Na)以(Yi)配(Pei)制(Zhi)电(Dian)解(Jie)质(Zhi)溶(Rong)液(Ye),(?)利(Li)用(Yong)该(Gai)溶(Rong)液(Ye)完(Wan)全(Quan)浸(Jin)没(Mei)罐(Guan)里(Li)的(De)阳(Yang)极(Ji)。(?)

  油(You)罐(Guan)的(De)吸(Xi)人(Ren)管(Guan)应(Ying)恰(Qia)当(Dang)安(An)置(Zhi)使(Shi)电(Dian)解(Jie)质(Zhi)不(Bu)被(Bei)吸(Xi)出(Chu)。(?)并(Bing)且(Qie),(?)装(Zhuang)油(You)管(Guan)必(Bi)须(Xu)设(She)计(Ji)成(Cheng)装(Zhuang)油(You)时(Shi)对(Dui)电(Dian)解(Jie)质(Zhi)的(De)扰(Rao)动(Dong)越(Yue)小(Xiao)越(Yue)好(Hao)。(?)假(Jia)如(Ru)燃(Ran)油(You)进(Jin)入(Ru)罐(Guan)的(De)速(Su)率(Lu)不(Bu)超(Chao)过(Guo)0.3m·(?)s-1,(?)即(Ji)能(Neng)够(Gou)防(Fang)止(Zhi)不(Bu)利(Li)的(De)扰(Rao)动(Dong)。(?)吸(Xi)入(Ru)管(Guan)的(De)一(Yi)端(Duan)必(Bi)须(Xu)在(Zai)电(Dian)解(Jie)质(Zhi)液(Ye)面(Mian)上(Shang)方(Fang)不(Bu)少(Shao)于(Yu)5cm。(?)选(Xuan)用(Yong)AZ63型(Xing)这(Zhe)样(Yang)的(De)镁(Mei)阳(Yang)极(Ji)(见(Jian)6.2.4节(Jie))作(Zuo)为(Wei)牺(Xi)牲(Sheng)阳(Yang)极(Ji)。(?)其(Qi)电(Dian)流(Liu)容(Rong)量(Liang)约(Yue)为(Wei)1100A·(?)h·(?)kg-1,(?)每(Mei)平(Ping)方(Fang)米(Mi)受(Shou)保(Bao)护(Hu)的(De)罐(Guan)表(Biao)面(Mian)需(Xu)要(Yao)长(Chang) 35cm、(?)重(Zhong)0.8kg的(De)阳(Yang)极(Ji)。(?)在(Zai)距(Ju)罐(Guan)底(Di) 3~5mm的(De)距(Ju)离(Li)上(Shang),(?)它(Ta)们(Men)与(Yu)罐(Guan)底(Di)板(Ban)实(Shi)现(Xian)电(Dian)分(Fen)离(Li),(?)并(Bing)成(Cheng)均(Jun)匀(Yun)分(Fen)布(Bu)。(?)这(Zhe)些(Xie)阳(Yang)极(Ji)相(Xiang)互(Hu)实(Shi)现(Xian)电(Dian)连(Lian)接(Jie),(?)并(Bing)用(Yong)一(Yi)绝(Jue)缘(Yuan)电(Dian)缆(Lan)连(Lian)接(Jie)到(Dao)罐(Guan)的(De)拱(Gong)顶(Ding)。(?)牺(Xi)牲(Sheng)阳(Yang)极(Ji)产(Chan)生(Sheng)大(Da)量(Liang)腐(Fu)蚀(Shi)产(Chan)物(Wu),(?)形(Xing)成(Cheng)淤(Yu)渣(Zha)和(He)杂(Za)质(Zhi)。(?)使(Shi)用(Yong)惰(Duo)性(Xing)的(De)强(Qiang)制(Zhi)电(Dian)流(Liu)辅(Fu)助(Zhu)阳(Yang)极(Ji)时(Shi)就(Jiu)不(Bu)会(Hui)有(You)这(Zhe)些(Xie)缺(Que)点(Dian)。(?)这(Zhe)些(Xie)通(Tong)常(Chang)是(Shi)有(You)金(Jin)属(Shu)氧(Yang)化(Hua)物(Wu)涂(Tu)层(Ceng)的(De)钛(Tai)阳(Yang)极(Ji)(见(Jian) 7.2.3节(Jie))。(?)不(Bu)可(Ke)使(Shi)用(Yong)铂(Bo)或(Huo)镀(Du)铂(Bo)阳(Yang)极(Ji),(?)因(Yin)为(Wei)存(Cun)在(Zai)爆(Bao)炸(Zha)危(Wei)险(Xian)[17]。(?)强(Qiang)制(Zhi)电(Dian)流(Liu)辅(Fu)助(Zhu)阳(Yang)极(Ji)按(An)牺(Xi)牲(Sheng)阳(Yang)极(Ji)一(Yi)样(Yang)的(De)方(Fang)法(Fa)安(An)装(Zhuang)。(?)每(Mei) 2m?受(Shou)保(Bao)护(Hu)的(De)表(Biao)面(Mian)需(Xu)要(Yao) 10cm 长(Chang)的(De)阳(Yang)极(Ji)。(?)

用(Yong)截(Jie)面(Mian)为(Wei) 2.5mm?的(De)耐(Nai)矿(Kuang)物(Wu)油(You)的(De)铜(Tong)质(Zhi)绝(Jue)缘(Yuan)导(Dao)线(Xian)(如(Ru)特(Te)氟(Fu)隆(Long)绝(Jue)缘(Yuan)电(Dian)缆(Lan))把(Ba)阳(Yang)极(Ji)连(Lian)接(Jie)到(Dao)受(Shou)保(Bao)护(Hu)目(Mu)的(De)物(Wu)上(Shang)或(Huo)连(Lian)接(Jie)到(Dao)变(Bian)压(Ya)整(Zheng)流(Liu)器(Qi)上(Shang)。(?)变(Bian)压(Ya)整(Zheng)流(Liu)器(Qi)必(Bi)须(Xu)满(Man)足(Zu)参(Can)考(Kao)文(Wen)献(Xian)[6]中(Zhong)的(De)要(Yao)求(Qiu),(?)并(Bing)具(Ju)备(Bei)监(Jian)控(Kong)其(Qi)操(Cao)作(Zuo)的(De)功(Gong)能(Neng)。(?)在(Zai)每(Mei)种(Zhong)情(Qing)况(Kuang)下(Xia),(?)这(Zhe)些(Xie)阳(Yang)极(Ji)的(De)使(Shi)用(Yong)寿(Shou)命(Ming)设(She)计(Ji)为(Wei)至(Zhi)少(Shao)15年(Nian)。(?)

在(Zai)调(Diao)试(Shi)阶(Jie)段(Duan)必(Bi)须(Xu)对(Dui)阴(Yin)极(Ji)保(Bao)护(Hu)装(Zhuang)置(Zhi)进(Jin)行(Xing)测(Ce)试(Shi),(?)并(Bing)且(Qie)至(Zhi)少(Shao)每(Mei)年(Nian)测(Ce)试(Shi)1次(Ci)。(?)应(Ying)使(Shi)用(Yong)专(Zhuan)用(Yong)探(Tan)头(Tou)在(Zai)油(You)层(Ceng)下(Xia)罐(Guan)底(Di)板(Ban)的(De)几(Ji)个(Ge)点(Dian)上(Shang)测(Ce)量(Liang)电(Dian)位(Wei)。(?)如(Ru)2.4节(Jie)描(Miao)述(Shu)的(De)那(Na)样(Yang),(?)按(An)照(Zhao)式(Shi)(2-39)检(Jian)测(Ce)断(Duan)电(Dian)电(Dian)位(Wei)与(Yu)保(Bao)护(Hu)电(Dian)位(Wei)作(Zuo)为(Wei)检(Jian)查(Cha)保(Bao)护(Hu)准(Zhun)则(Ze)的(De)重(Zhong)要(Yao)手(Shou)段(Duan)。(?)


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