1.Ukwenziwa ngcono kwendlela yokucwecwa ngomshini kaI-3PE anti-corrosion coating
① Thola noma uthuthukise okokusebenza kokushisisa okungcono ukuze umiselele ithoshi yokusika igesi. Imishini yokushisisa kufanele ikwazi ukuqinisekisa ukuthi indawo yomlilo wesifutho inkulu ngokwanele ukushisisa yonke ingxenye yokumboza ukuze ixetshulwe ngesikhathi esisodwa, futhi ngesikhathi esifanayo iqinisekise ukuthi izinga lokushisa lomlilo lingaphezu kuka-200°C.
② Thola noma wenze ithuluzi elingcono lokukhumula esikhundleni sefosholo eliyisicaba noma isando sesandla. Ithuluzi lokucwecwa kufanele likwazi ukuzuza ukubambisana okuhle nendawo engaphandle yepayipi, lizame ukukhuhla i-anti-corrosion coating endaweni engaphandle yepayipi ngesikhathi esisodwa, futhi uqinisekise ukuthi okokuvikela ukubola kuxhumene nokuxebuka. ithuluzi kulula ukuhlanza.

2.I-electrochemical peeling ye-3PE anti-corrosion coating
Abaklami bobunjiniyela kanye nabasebenzi bokwakha bangahlaziya izimbangela zokugqwala kwangaphandle kwamapayipi agqitshwe igesi kanye nokulimala kwe-3PE anti-corrosion coating, futhi bathole izindlela ezintsha zokucekela phansi kanye nokuxebula okunqanda ukugqwala.
(1) Izimbangela zokugqwala kwangaphandle kwamapayipi kanye nokuhlaziywa kwe-3PE anti-corrosion coating defects
① Ukugqwala kwamanje kwamapayipi agqitshiwe
I-stray current ingeyamanje ekhiqizwa ithonya lezimo zangaphandle, futhi amandla ayo ngokuvamile akalwa ngendlela ye-polarization probe [1]. I-stray current inokugqwala okukhulu nobungozi, ububanzi obubanzi nokungahleliwe okuqinile, ikakhulukazi ukuba khona kwamandla ashintshayo kungabangela ukuwohloka kobuso be-electrode futhi kubhebhethekise ukugqwala kwamapayipi. Ukuphazamiseka kwe-AC kungasheshisa ukuguga kongqimba lwe-anti-corrosion, kubangele ukuthi ungqimba olulwa nokugqwala luqhume, luphazamise ukusebenza okuvamile kwesistimu yokuvikela i-cathodic, kunciphise ukusebenza kahle kwamanje kwe-anode yomhlatshelo, futhi kubangele ukuthi ipayipi lingatholi. ukuvikela okusebenzayo kwe-anti-corrosion.
② Ukugqwala kwemvelo yomhlabathi kwamapayipi agqitshiwe

Amathonya amakhulu enhlabathi ezungezile ekugqwaleni kwamapayipi egesi agqitshiwe yilawa: a. Umthelela wamabhethri ayinhloko. Amaseli e-galvanic akhiwe yi-electrochemical inhomogeneity yezinsimbi nemidiya ayimbangela ebalulekile yokugqwala kwamapayipi agqitshiwe. b. Umthelela wokuqukethwe kwamanzi. Okuqukethwe kwamanzi kunethonya elikhulu ekugqwaleni kwamapayipi egesi, futhi amanzi enhlabathini ayisimo esidingekayo se-ionization kanye nokuqedwa kwe-electrolyte yomhlabathi. c. Umthelela we-resistivity. Uma kuncane ukumelana nenhlabathi, kuqina ukugqwala kwamapayipi ensimbi. d. Umphumela we-acidity. Amapayipi agqwala kalula enhlabathini ene-asidi. Lapho inhlabathi iqukethe ama-asidi amaningi e-organic, ngisho nenani le-pH liseduze nokungathathi hlangothi, liyagqwala kakhulu. e. Umphumela kasawoti. Usawoti enhlabathini awugcini nje ukudlala indima ekuqhubeni ukugqwala kwenhlabathi, kodwa futhi uhlanganyela ekuphenduleni kwamakhemikhali. Ibhethri lomehluko wokugcwala kukasawoti elakhiwe ukuxhumana phakathi kwepayipi legesi kanye nenhlabathi enosawoti ohlukahlukene kubangela ukugqwala kwepayipi elisendaweni enosawoti omningi futhi kubhebhethekise ukugqwala kwendawo. f. Umthelela we-porosity. I-porosity enkulu yomhlabathi ivumela ukungena komoya-mpilo kanye nokulondolozwa kwamanzi emhlabathini, futhi ikhuthaza ukuvela kokugqwala.

③ Ukuhlaziywa kwesici se-3PE anti-corrosion coating adhesion [5]
Isici esibalulekile esithinta ukunamathela phakathi kwe-3PE anti-corrosion coating kanye nepayipi lensimbi yikhwalithi yokwelashwa kwendawo kanye nokungcoliswa kwendawo yepayipi yensimbi. a. Ingaphezulu limanzi. Ingaphezulu lepayipi lensimbi ngemva kokuchithwa lingcolile ngamanzi nothuli, olujwayele ukugqwala okuntantayo, okuzothinta ukunamathela phakathi kwe-epoxy powder e-sintered kanye nobuso bepayipi yensimbi. b. Ukungcoliswa kothuli. Uthuli olomile emoyeni luwela ngokuqondile ebusweni bepayipi yensimbi ekhishwe ukugqwala, noma iwela emshinini wokudlulisa bese ungcolisa ngokungaqondile ubuso bepayipi yensimbi, engabangela nokuncipha kokunamathela. c. Izimbotshana namagwebu. Ama-pores abangelwa umswakama akhona kakhulu ebusweni nangaphakathi kwesendlalelo se-HDPE, futhi ubukhulu nokusabalalisa kufana ngokufanayo, okuthinta ukunamathela.
(2) Izincomo zokukhumula i-electrochemical ye-3PE anti-corrosion coatings
Ngokuhlaziywa kwezimbangela zokugqwala kwangaphandle kwamapayipi egesi angcwatshwe kanye nokukhubazeka kokunamathela kwe-3PE anti-corrosion coatings, ukuthuthukiswa kwedivayisi ngokusekelwe ezindleleni ze-electrochemical kuyindlela enhle yokuxazulula ngokushesha inkinga yamanje, futhi ayikho idivayisi enjalo. emakethe njengamanje.
Ngesisekelo sokucabangela ngokugcwele izici ezibonakalayo ze-3PE anti-corrosion coating, ngokufunda indlela yokugqwala kwenhlabathi kanye nokuhlola, indlela yokugqwala enezinga lokugqwala elikhulu kakhulu kunelomhlaba liyathuthukiswa. Sebenzisa ukusabela kwamakhemikhali okulingene ukuze udale izimo ezithile zangaphandle, ukuze i-3PE evimbela ukugqwala ihlangane nama-reagents amakhemikhali ngokwe-electrochemical, ngaleyo ndlela ibhubhise ukunamathela kwayo ngepayipi noma incibilike ngokuqondile okokulwa nokugqwala.

3.I-miniaturization yama-stripper amakhulu amanje

I-PetroChina West-East Gas Pipeline Company isungule umshini obalulekile wokukhanda amapayipi ahamba amabanga amade kawoyela negesi yemvelo - umshini wokuhlubula ungqimba wamapayipi anobubanzi obukhulu ovimbela ukugqwala. Imishini ixazulula inkinga ukuthi ungqimba lwe-anti-corrosion kunzima ukulukhipha ekulungiseni okuphuthumayo kwamapayipi amakhulu kawoyela negesi, okuthinta ukusebenza kahle kokulungisa izimo eziphuthumayo. Umshini wokuhlubula ungqimba olunqamula ukugqwala wohlobo lwe-crawler-diameter enkulu usebenzisa injini njengamandla okukhumula ukushayela ibhulashi elijikelezayo ukuze lijikeleze ukuze lisuse ungqimba olulwa nokugqwala olugoqwe odongeni olungaphandle, bese lihamba eduze komjikelezo ngaphezulu. yongqimba lwepayipi lokunqanda ukugqwala ukuze kuqedelwe ukuxetshulwa kongqimba lwepayipi lokulwa nokugqwala. Imisebenzi yokushisela ihlinzeka ngezimo ezivumayo. Uma le mishini emikhulu yenziwe i-miniaturized, ilungele amapayipi angaphandle anobubanzi obuncane futhi yanda, izoba nezinzuzo ezingcono zezomnotho nezenhlalakahle ekwakhiweni kokulungisa izimo eziphuthumayo zegesi emadolobheni. Ungawenza kanjani ube mncane uhlobo lwepayipi lobubanzi obuyi-crawler-diameter stripper yangaphandle ye-anti-corrosion stripper iyindlela enhle yocwaningo.