仪(Yi)表(Biao)现(Xian)场(Chang)维(Wei)护(Hu)经(Jing)验(Yan)
当(Dang)前(Qian)随(Sui)着(Zhuo)石(Shi)化(Hua)、(?)钢(Gang)铁(Tie)、(?)造(Zao)纸(Zhi)、(?)食(Shi)品(Pin)和(He)医(Yi)药(Yao)企(Qi)业(Ye)自(Zi)动(Dong)化(Hua)水(Shui)平(Ping)的(De)不(Bu)断(Duan)提(Ti)高(Gao),(?)对(Dui)现(Xian)场(Chang)仪(Yi)器(Qi)维(Wei)修(Xiu)人(Ren)员(Yuan)的(De)技(Ji)术(Shu)水(Shui)平(Ping)提(Ti)出(Chu)了(Liao)更(Geng)高(Gao)的(De)要(Yao)求(Qiu)。(?)为(Wei)了(Liao)缩(Suo)短(Duan)仪(Yi)器(Qi)故(Gu)障(Zhang)处(Chu)理(Li)时(Shi)间(Jian),(?)保(Bao)证(Zheng)安(An)全(Quan)生(Sheng)产(Chan),(?)提(Ti)高(Gao)经(Jing)济(Ji)效(Xiao)益(Yi),(?)本(Ben)文(Wen)介(Jie)绍(Shao)了(Liao)仪(Yi)器(Qi)维(Wei)修(Xiu)人(Ren)员(Yuan)的(De)现(Xian)场(Chang)维(Wei)修(Xiu)经(Jing)验(Yan)。(?)
一(Yi)、(?)现(Xian)场(Chang)仪(Yi)表(Biao)系(Xi)统(Tong)故(Gu)障(Zhang)的(De)基(Ji)本(Ben)分(Fen)析(Xi)步(Bu)骤(Zhou)
现(Xian)场(Chang)仪(Yi)表(Biao)的(De)测(Ce)量(Liang)参(Can)数(Shu)一(Yi)般(Ban)分(Fen)为(Wei)四(Si)个(Ge)参(Can)数(Shu):温(Wen)度(Du)、(?)压(Ya)力(Li)、(?)流(Liu)量(Liang)和(He)液(Ye)位(Wei)。(?)
根(Gen)据(Ju)测(Ce)量(Liang)参(Can)数(Shu)的(De)不(Bu)同(Tong),(?)分(Fen)析(Xi)不(Bu)同(Tong)现(Xian)场(Chang)仪(Yi)器(Qi)的(De)故(Gu)障(Zhang)。(?)
1.首(Shou)先(Xian),(?)在(Zai)分(Fen)析(Xi)现(Xian)场(Chang)仪(Yi)表(Biao)故(Gu)障(Zhang)之(Zhi)前(Qian),(?)必(Bi)须(Xu)全(Quan)面(Mian)了(Liao)解(Jie)相(Xiang)关(Guan)仪(Yi)表(Biao)系(Xi)统(Tong)的(De)生(Sheng)产(Chan)过(Guo)程(Cheng)、(?)生(Sheng)产(Chan)过(Guo)程(Cheng)和(He)条(Tiao)件(Jian),(?)了(Liao)解(Jie)仪(Yi)表(Biao)系(Xi)统(Tong)的(De)设(She)计(Ji)方(Fang)案(An)、(?)设(She)计(Ji)意(Yi)图(Tu)、(?)结(Jie)构(Gou)、(?)特(Te)点(Dian)、(?)性(Xing)能(Neng)和(He)参(Can)数(Shu)要(Yao)求(Qiu)。(?)
2.在(Zai)分(Fen)析(Xi)和(He)检(Jian)查(Cha)现(Xian)场(Chang)仪(Yi)表(Biao)系(Xi)统(Tong)故(Gu)障(Zhang)之(Zhi)前(Qian),(?)应(Ying)告(Gao)知(Zhi)现(Xian)场(Chang)操(Cao)作(Zuo)人(Ren)员(Yuan)生(Sheng)产(Chan)负(Fu)荷(He)和(He)原(Yuan)材(Cai)料(Liao)参(Can)数(Shu)的(De)变(Bian)化(Hua)。(?)
条(Tiao)件(Jian),(?)检(Jian)查(Cha)故(Gu)障(Zhang)仪(Yi)器(Qi)记(Ji)录(Lu)曲(Qu)线(Xian),(?)综(Zong)合(He)分(Fen)析(Xi),(?)确(Que)定(Ding)仪(Yi)器(Qi)故(Gu)障(Zhang)原(Yuan)因(Yin)。(?)
3.如(Ru)果(Guo)仪(Yi)器(Qi)记(Ji)录(Lu)曲(Qu)线(Xian)是(Shi)一(Yi)条(Tiao)死(Si)线(Xian)(没(Mei)有(You)任(Ren)何(He)变(Bian)化(Hua)的(De)线(Xian)称(Cheng)为(Wei)死(Si)线(Xian)),(?)或(Huo)者(Zhe)记(Ji)录(Lu)曲(Qu)线(Xian)最(Zui)初(Chu)波(Bo)动(Dong),(?)现(Xian)在(Zai)突(Tu)然(Ran)变(Bian)成(Cheng)一(Yi)条(Tiao)直(Zhi)线(Xian);(?)故(Gu)障(Zhang)很(Hen)可(Ke)能(Neng)发(Fa)生(Sheng)在(Zai)仪(Yi)器(Qi)系(Xi)统(Tong)中(Zhong)。(?)目(Mu)前(Qian),(?)大(Da)多(Duo)数(Shu)记(Ji)录(Lu)仪(Yi)器(Qi)是(Shi)集(Ji)散(San)控(Kong)制(Zhi)系(Xi)统(Tong)计(Ji)算(Suan)机(Ji)系(Xi)统(Tong),(?)它(Ta)具(Ju)有(You)很(Hen)高(Gao)的(De)灵(Ling)敏(Min)度(Du),(?)对(Dui)参(Can)数(Shu)的(De)变(Bian)化(Hua)反(Fan)应(Ying)非(Fei)常(Chang)灵(Ling)敏(Min)。(?)此(Ci)时(Shi),(?)可(Ke)以(Yi)人(Ren)为(Wei)地(Di)改(Gai)变(Bian)工(Gong)艺(Yi)参(Can)数(Shu),(?)以(Yi)观(Guan)察(Cha)曲(Qu)线(Xian)的(De)变(Bian)化(Hua)。(?)如(Ru)果(Guo)没(Mei)有(You)变(Bian)化(Hua),(?)基(Ji)本(Ben)上(Shang)可(Ke)以(Yi)断(Duan)定(Ding)仪(Yi)器(Qi)系(Xi)统(Tong)有(You)问(Wen)题(Ti)。(?)如(Ru)果(Guo)有(You)正(Zheng)常(Chang)的(De)变(Bian)化(Hua),(?)基(Ji)本(Ben)上(Shang)可(Ke)以(Yi)断(Duan)定(Ding)仪(Yi)器(Qi)系(Xi)统(Tong)没(Mei)有(You)大(Da)问(Wen)题(Ti)。(?)
4.当(Dang)工(Gong)艺(Yi)参(Can)数(Shu)发(Fa)生(Sheng)变(Bian)化(Hua)时(Shi),(?)发(Fa)现(Xian)记(Ji)录(Lu)曲(Qu)线(Xian)突(Tu)然(Ran)变(Bian)化(Hua)或(Huo)跳(Tiao)至(Zhi)最(Zui)大(Da)或(Huo)最(Zui)小(Xiao),(?)此(Ci)时(Shi)的(De)故(Gu)障(Zhang)经(Jing)常(Chang)出(Chu)现(Xian)在(Zai)仪(Yi)器(Qi)系(Xi)统(Tong)中(Zhong)。(?)
5.故(Gu)障(Zhang)发(Fa)生(Sheng)前(Qian),(?)仪(Yi)器(Qi)记(Ji)录(Lu)曲(Qu)线(Xian)始(Shi)终(Zhong)正(Zheng)常(Chang)。(?)波(Bo)动(Dong)发(Fa)生(Sheng)后(Hou),(?)记(Ji)录(Lu)曲(Qu)线(Xian)变(Bian)得(De)不(Bu)规(Gui)则(Ze)或(Huo)使(Shi)系(Xi)统(Tong)难(Nan)以(Yi)控(Kong)制(Zhi),(?)甚(Shen)至(Zhi)手(Shou)动(Dong)操(Cao)作(Zuo)也(Ye)无(Wu)法(Fa)控(Kong)制(Zhi)。(?)此(Ci)时(Shi),(?)故(Gu)障(Zhang)可(Ke)能(Neng)是(Shi)由(You)进(Jin)程(Cheng)操(Cao)作(Zuo)系(Xi)统(Tong)引(Yin)起(Qi)的(De)。(?)
6.当(Dang)发(Fa)现(Xian)集(Ji)散(San)控(Kong)制(Zhi)系(Xi)统(Tong)显(Xian)示(Shi)仪(Yi)表(Biao)异(Yi)常(Chang)时(Shi),(?)可(Ke)现(Xian)场(Chang)检(Jian)查(Cha)同(Tong)一(Yi)可(Ke)视(Shi)仪(Yi)表(Biao)的(De)指(Zhi)示(Shi)值(Zhi)。(?)如(Ru)果(Guo)它(Ta)们(Men)非(Fei)常(Chang)不(Bu)同(Tong),(?)很(Hen)可(Ke)能(Neng)仪(Yi)器(Qi)系(Xi)统(Tong)出(Chu)现(Xian)故(Gu)障(Zhang)。(?)
简(Jian)而(?)言(Yan)之(Zhi),(?)在(Zai)分(Fen)析(Xi)现(Xian)场(Chang)仪(Yi)表(Biao)故(Gu)障(Zhang)的(De)原(Yuan)因(Yin)时(Shi),(?)应(Ying)特(Te)别(Bie)注(Zhu)意(Yi)被(Bei)测(Ce)控(Kong)制(Zhi)对(Dui)象(Xiang)和(He)控(Kong)制(Zhi)阀(Fa)特(Te)性(Xing)的(De)变(Bian)化(Hua),(?)这(Zhe)可(Ke)能(Neng)是(Shi)现(Xian)场(Chang)仪(Yi)表(Biao)系(Xi)统(Tong)故(Gu)障(Zhang)的(De)原(Yuan)因(Yin)。(?)因(Yin)此(Ci),(?)应(Ying)全(Quan)面(Mian)考(Kao)虑(Lu)并(Bing)仔(Zi)细(Xi)分(Fen)析(Xi)现(Xian)场(Chang)仪(Yi)表(Biao)系(Xi)统(Tong)和(He)工(Gong)艺(Yi)操(Cao)作(Zuo)系(Xi)统(Tong),(?)检(Jian)查(Cha)原(Yuan)因(Yin)。(?)
二(?)、(?)仪(Yi)表(Biao)控(Kong)制(Zhi)系(Xi)统(Tong)故(Gu)障(Zhang)分(Fen)析(Xi)的(De)四(Si)大(Da)测(Ce)量(Liang)参(Can)数(Shu)步(Bu)骤(Zhou)
1.温(Wen)控(Kong)仪(Yi)表(Biao)系(Xi)统(Tong)故(Gu)障(Zhang)分(Fen)析(Xi)步(Bu)骤(Zhou)
在(Zai)分(Fen)析(Xi)温(Wen)控(Kong)仪(Yi)表(Biao)系(Xi)统(Tong)的(De)故(Gu)障(Zhang)时(Shi),(?)首(Shou)先(Xian)要(Yao)注(Zhu)意(Yi)两(Liang)点(Dian):系(Xi)统(Tong)仪(Yi)表(Biao)主(Zhu)要(Yao)由(You)电(Dian)气(Qi)仪(Yi)表(Biao)进(Jin)行(Xing)测(Ce)量(Liang)、(?)指(Zhi)示(Shi)和(He)控(Kong)制(Zhi);(?)这(Zhe)个(Ge)系(Xi)统(Tong)中(Zhong)仪(Yi)器(Qi)的(De)测(Ce)量(Liang)经(Jing)常(Chang)落(Luo)后(Hou)。(?)
(1)温(Wen)度(Du)仪(Yi)表(Biao)系(Xi)统(Tong)的(De)指(Zhi)示(Shi)值(Zhi)突(Tu)然(Ran)变(Bian)为(Wei)最(Zui)大(Da)或(Huo)最(Zui)小(Xiao)值(Zhi),(?)这(Zhe)通(Tong)常(Chang)是(Shi)仪(Yi)表(Biao)系(Xi)统(Tong)故(Gu)障(Zhang)。(?)因(Yin)为(Wei)温(Wen)度(Du)计(Ji)系(Xi)统(Tong)的(De)测(Ce)量(Liang)滞(Zhi)后(Hou)大(Da),(?)不(Bu)会(Hui)有(You)突(Tu)然(Ran)的(De)变(Bian)化(Hua)。(?)此(Ci)时(Shi),(?)故(Gu)障(Zhang)原(Yuan)因(Yin)主(Zhu)要(Yao)是(Shi)热(Re)电(Dian)偶(Ou)、(?)热(Re)阻(Zu)、(?)补(Bu)偿(Chang)线(Xian)断(Duan)裂(Lie)或(Huo)变(Bian)送(Song)器(Qi)放(Fang)大(Da)器(Qi)故(Gu)障(Zhang)。(?)
(2)温(Wen)控(Kong)仪(Yi)表(Biao)系(Xi)统(Tong)出(Chu)现(Xian)快(Kuai)速(Su)振(Zhen)荡(Dang)现(Xian)象(Xiang),(?)这(Zhe)主(Zhu)要(Yao)是(Shi)由(You)于(Yu)控(Kong)制(Zhi)参(Can)数(Shu)整(Zheng)定(Ding)不(Bu)当(Dang)造(Zao)成(Cheng)的(De)。(?)
(3)温(Wen)控(Kong)仪(Yi)表(Biao)系(Xi)统(Tong)的(De)指(Zhi)示(Shi)波(Bo)动(Dong)大(Da)且(Qie)慢(Man),(?)这(Zhe)可(Ke)能(Neng)是(Shi)工(Gong)艺(Yi)操(Cao)作(Zuo)变(Bian)化(Hua)造(Zao)成(Cheng)的(De)。(?)如(Ru)果(Guo)当(Dang)时(Shi)过(Guo)程(Cheng)操(Cao)作(Zuo)没(Mei)有(You)改(Gai)变(Bian),(?)可(Ke)能(Neng)是(Shi)仪(Yi)表(Biao)控(Kong)制(Zhi)系(Xi)统(Tong)本(Ben)身(Shen)的(De)故(Gu)障(Zhang)。(?)
(4)温(Wen)控(Kong)系(Xi)统(Tong)本(Ben)身(Shen)的(De)故(Gu)障(Zhang)分(Fen)析(Xi)步(Bu)骤(Zhou):检(Jian)查(Cha)调(Diao)节(Jie)阀(Fa)的(De)输(Shu)入(Ru)信(Xin)号(Hao)是(Shi)否(Fou)变(Bian)化(Hua),(?)输(Shu)入(Ru)信(Xin)号(Hao)是(Shi)否(Fou)变(Bian)化(Hua),(?)调(Diao)节(Jie)阀(Fa)是(Shi)否(Fou)动(Dong)作(Zuo),(?)调(Diao)节(Jie)阀(Fa)膜(Mo)片(Pian)的(De)膜(Mo)片(Pian)是(Shi)否(Fou)泄(Xie)漏(Lou);(?)检(Jian)查(Cha)调(Diao)节(Jie)器(Qi)定(Ding)位(Wei)器(Qi)的(De)输(Shu)入(Ru)信(Xin)号(Hao)是(Shi)否(Fou)变(Bian)化(Hua),(?)输(Shu)入(Ru)信(Xin)号(Hao)是(Shi)否(Fou)变(Bian)化(Hua),(?)输(Shu)出(Chu)信(Xin)号(Hao)是(Shi)否(Fou)变(Bian)化(Hua),(?)定(Ding)位(Wei)器(Qi)是(Shi)否(Fou)有(You)故(Gu)障(Zhang)。(?)检(Jian)查(Cha)定(Ding)位(Wei)器(Qi)的(De)输(Shu)入(Ru)信(Xin)号(Hao)是(Shi)否(Fou)变(Bian)化(Hua),(?)然(Ran)后(Hou)检(Jian)查(Cha)调(Diao)节(Jie)器(Qi)的(De)输(Shu)出(Chu)是(Shi)否(Fou)变(Bian)化(Hua)。(?)如(Ru)果(Guo)调(Diao)节(Jie)器(Qi)的(De)输(Shu)入(Ru)没(Mei)有(You)改(Gai)变(Bian)而(?)输(Shu)出(Chu)改(Gai)变(Bian),(?)那(Na)么(Me)这(Zhe)是(Shi)调(Diao)节(Jie)器(Qi)本(Ben)身(Shen)的(De)故(Gu)障(Zhang)。(?)
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