Ungazifakela njani ii-Epoxy Resin Through-wall Bushings?

Ukufakelwa kweii-bushings ze-epoxy resin ezidlula eludongeniyinkqubo yombane echanekileyo nelawulwa ngokungqongqo, eyahlulwe ngokubanzi ibe ziimeko ezimbini: efakwe kwangaphambili (ifakwe ngaxeshanye ngexesha lokwakhiwa kodonga) kunye nefakwe emva (ifakwe emva kokuba udonga lwenziwe). La manyathelo alandelayo ngamanyathelo okufakelwa ngokubanzi kunye namanqaku aphambili asekelwe kwimigangatho yoshishino (njenge-GB 50149-2010, DL/T 5221-2016).

I. Amanyathelo oFakelo oluQhelekileyo
1. Ukulungiselela kwangaphambili kokufakwa
Ukuqinisekiswa kweParameter: Qinisekisa ukuba i-voltage elinganisiweyo, i-current, kunye nomgama we-creepage we-bushing ziyahambelana nemizobo yoyilo, kwaye ujonge naziphi na iintanda okanye umonakalo kwimbonakalo.
Ukulinganisa kunye nokuma: Sebenzisa umgca weleza okanye wetshokhwe ukuphawula umgca osembindini wodonga ukuqinisekisa ukuchaneka kwendawo ebekwe kuyo umngxuma kwaye uphephe uxinzelelo kwibhasi okanye intambo xa uphoqeleka ukuba udlule kamva.
Ukulungiswa kwemingxunya: Ububanzi bemingxunya budla ngokuba yi-5-10mm enkulu kunobubanzi bangaphandle be-bushing ukuvumela ukulungiswa nokuzaliswa kwezinto zokutywina. Umphetho womngxunya kufuneka ulungiswe kwaye kususwe ii-burrs ukuthintela ukonakala kwentambo okanye umphezulu we-bushing.
2. Ukugquma ngezihlahlaUkulungiswa kunye nokutywinwa koMgangatho
Indlela Yokuqiniswa: Kwi-epoxy resin bushing ene-flanges zesinyithi (ezifana ne-aluminium alloy flanges), ii-expansion bolts okanye ii-chemical anchors zihlala zisetyenziselwa ukuqiniswa kwe-flanges kumacala omabini odonga. Ixesha elicetyiswayo loqiniswa yi-≤ 300mm ukuqinisekisa ukuba i-bushing ayikhululeki ngexesha lokusebenza.
Ukuzalisa Ukuvala: Eli linyathelo elibalulekileyo lokuthintela ukungenwa kwamanzi, ukuthintela umlilo, kunye nokuthintela iimpuku.
Ukuzaliswa Kwezikhewu: Umsantsa ophakathi kwe-bushing nodonga kufuneka uzaliswe nge-putty engatshiyo okanye i-sealant engatshiyo, enobukhulu obucetyiswayo obuyi-≥ 20mm ukuqinisekisa isitywino esixineneyo nesingenazikhewu.
Unyango olungangeni manzi: Ukuze ungene eludongeni ngaphandle okanye kwiindawo ezimanzi, isiphelo sangaphandle sendluukugquma ngesihlahlakufuneka ithambekele ezantsi kwi-15° – 30°, kwaye kufuneka kufakwe isigqubuthelo esingangeni manzi ukuthintela amanzi emvula ukuba angabuyeli.
3. Ukufakwa kunye noQhagamshelo lweConductor
Ukhuseleko Lokufaka: Ngaphambi kokufaka iibhasi okanye iintambo, jonga ukuba udonga lwangaphakathi lwe-bushing lugudile na. Kwiintambo, kucetyiswa ukuba ufake ityhubhu yokukhusela (efana netyhubhu ebotshelelweyo) kwicandelo lokufaka ukuthintela imiphetho ebukhali ekukrweleni umaleko wokufaka.
Ukuqinisa uQhagamshelo: Xa uqhagamshela i-terminal, iibholithi maziqiniswe kwi-torque eqhelekileyo ukuze kuthintelwe ukufudumeza kwendawo ngenxa yokunxibelelana okubi. Emva koqhagamshelo, jonga ukuba iringi yokutywina ayiguquki na ukuze kuthintelwe ukungena komswakama.
4. Uvavanyo emva kokufakwa
Uvavanyo lokufaka i-insulation: Emva kokufakwa, ukumelana ne-insulation kufuneka kuvavanywe nge-megohmmeter ye-2500V. Ixabiso elifanelekileyo lidla ngokuba yi-≥1000MΩ (okanye ngokuhambelana nemigangatho ethile).
Uvavanyo lweVoltage: Kwii-bushings ze-voltage ephezulu (ezifana ne-10kV nangaphezulu), kufuneka kwenziwe uvavanyo lwe-voltage yokumelana ne-frequency yamandla (umz., i-bushing ye-10kV engaphantsi kwe-42kV/5min ngaphandle kokuphazamiseka).
II. Amanyathelo okhuseleko angundoqo
Akukho Kungqongqoza Okuqinileyo: Nangona i-epoxy resin inamandla aphezulu, ukumelana kwayo nempembelelo akulunganga njengokwesinyithi. Ngexesha lokufakelwa, akuvumelekanga ngokungqongqo ukubetha ngokuthe ngqo umzimba we-bushing ngesando okanye ezinye izinto eziqinileyo ukuthintela ukuqhekeka okuncinci kumaleko wokugquma kwangaphakathi, okunokubangela ukukhutshwa okungaphelelanga.
Ukuthintela nokuCoca ukufuma: Ngaphambi kokufakela, sula imiphezulu yangaphakathi nangaphandle ye-bushing nge-anhydrous alcohol ukuqinisekisa ukuba akukho thuli okanye ioyile. Xa usebenza kwimozulu efumileyo, thatha amanyathelo okukhusela ukufuma ukuthintela ukufuma ukuba kungachaphazeli ukusebenza kokugquma.
Isibonelelo Sokwandiswa Nokuncitshiswa: Kwiindawo ezineendawo zokwandiswa okanye umahluko omkhulu wobushushu, kufuneka kugcinwe isibonelelo se-10-15mm sokwandiswa nokuncitshiswa phakathi kwe-bushing kunye nomqhubi, okanye kufuneka kufakwe i-raber compensator ukuthintela ukuguquka kwe-bushing ngenxa yokwanda nokuncitshiswa kobushushu.
Iimfuneko zokuGcina iMihlaba: Ukuba i-bushing inesikhuselo sesinyithi okanye i-flange yesinyithi, kufuneka iqiniswe ngokuthembekileyo, kwaye ukumelana nokugcina iMihlaba kufuneka kube yi-≤4Ω ukuze kupheliswe i-voltage ebangelwayo.
III. Ukuphathwa Kwendawo Ekhethekileyo
Ukufakelwa Okufakiweyo: Ngaphambi kokuba kugalelwe udonga lwesamente, i-bushing kufuneka ifakwe endaweni yayo. Ngeli xesha, kufuneka kuqwalaselwe ngokukodwa ukuchaneka kwendawo ukuze kuthintelwe ukuba i-bushing ingashukumi ngexesha lokugalelwa. Zombini iziphelo ze-bushing mazivele eludongeni ngaphezulu kwe-50mm ukuze kube lula ukutywinwa kwinqanaba elilandelayo.
Ukufakelwa Kwangaphandle: Iibhushi zohlobo lwangaphandle zihlala zineziketi ezichasene nongcoliseko. Ngexesha lokufakelwa, qwalasela icala leeskiti (ngokuqhelekileyo ziye ezantsi), kwaye ucoce rhoqo ukungcola kwiiskiti ukuze uthintele ukuqhekeka ngenxa yokuqokelelana kothuli.
Iingcebiso zoKhuseleko: Umsebenzi wokufakela kufuneka wenziwe kwimeko yokuphelelwa ngamandla, kwaye kufuneka kuxhonywe uphawu lwesilumkiso esithi “Musa ukuvala”. Ukufakelwa kwee-bushings ezine-voltage ephezulu kuyacetyiswa ukuba kuqhutywe ziingcali zombane eziqeqeshiweyo.

​

​