Ukusetyenziswa kwee-Epoxy Resin Insulators kwiZixhobo zaMandla

Ukusetyenziswa kwee-Epoxy Resin Insulators kwiZixhobo zaMandla

Kwiminyaka yakutshanje, i-insulators ene-epoxy resin njenge-dielectric isetyenziswe ngokubanzi kwishishini lamandla, njenge-bushings, i-insulators ezixhasayo, iibhokisi zoqhagamshelwano, iisilinda ezikhuselayo kunye nezibonda ezenziwe nge-epoxy resin kwisigaba sesithathu se-AC high-voltage switchgear. Iikholamu, njl. njl., masithethe ngezinye zeembono zam zobuqu ezisekelwe kwiingxaki zokugquma okwenzeka ngexesha lokusetyenziswa kwezi nxalenye ze-epoxy resin insulation.

1. Ukuveliswa kwe-epoxy resin insulation
Izixhobo ze-epoxy resin zinoluhlu lweenzuzo ezibalaseleyo kwizinto ezigqumayo ze-organic, ezinje ngokuhlangana okuphezulu, ukunamathela okuqinileyo, ukuguquguquka okuhle, iipropathi ezigqwesileyo zokunyanga i-thermal kunye nokuqina kokunganyangeki kweekhemikhali. Inkqubo yokwenziwa kwejeli yoxinzelelo lweoksijini (inkqubo ye-APG), ukugalelwa kwevacuum kwizinto ezahlukeneyo eziqinileyo. I-epoxy resin insulating parts eyenziweyo ineengenelo zamandla amakhulu omatshini, ukuxhathisa okuqinileyo kwe-arc, ukubumbana okuphezulu, umphezulu ogudileyo, ukumelana kakuhle nokubanda, ukumelana nobushushu, ukusebenza kakuhle kokufakelwa kombane, njl. njl. Isetyenziswa kakhulu kwishishini kwaye idlala ubukhulu becala indima yenkxaso kunye nokugquma. Iimpawu ezibonakalayo, ezombane, zombane kunye ne-thermal ye-epoxy resin insulation ye-3.6 ukuya kwi-40.5 kV iboniswe kwitheyibhile engezantsi.
I-epoxy resins isetyenziswa kunye ne-additives ukufumana ixabiso lesicelo. Izongezo zingakhethwa ngokweenjongo ezahlukeneyo. Izongezo ezisetyenziswa ngokuqhelekileyo ziquka ezi ndidi zilandelayo: ① i-arhente yokunyanga. ② isilungisi. ③ Ukuzalisa. ④ mncinci. ⑤Abanye. Phakathi kwabo, i-ejenti yokuphilisa i-additive eyimfuneko, nokuba isetyenziswe njenge-adhesive, i-coating okanye i-castable, kufuneka ifakwe, ngaphandle koko i-epoxy resin ayikwazi ukuphiliswa. Ngenxa yokusetyenziswa okwahlukeneyo, iipropati kunye neemfuno, kukwakho iimfuno ezahlukeneyo zeeresin ze-epoxy kunye nezongezo ezifana nee-agent zokunyanga, izilungisi, izihluzi kunye ne-diluents.
Kwinkqubo yokwenziwa kweendawo zokugquma, umgangatho wezinto ezikrwada ezifana ne-epoxy resin, ukungunda, ukungunda, ubushushu bokufudumala, uxinzelelo lokugalela, kunye nexesha lokunyanga kunempembelelo enkulu kumgangatho wemveliso egqityiweyo ye-insulating. iinxalenye. Ngoko ke, umenzi unenkqubo esemgangathweni. Inkqubo yokuqinisekisa ulawulo lomgangatho weendawo zokugquma.

2. Indlela yokuqhawula kunye neskimu sokuphucula i-epoxy resin insulation
I-epoxy resin insulation yindawo eyomeleleyo, kwaye amandla entsimi okuqhekeka okuqinileyo aphezulu kunolwelo kunye negesi ephakathi. ukwaphuka okuphakathi okuqinileyo
Uphawu kukuba amandla entsimi yokudiliza anobudlelwane obukhulu kunye nexesha lesenzo sombane. Ngokuqhelekileyo, ukuchithwa kwexesha lesenzo t Into ebizwa ngokuba yi-solid-sealed pole ibhekiselele kwicandelo elizimeleyo elenziwe sisiphazamisi sevacuum kunye/okanye uqhagamshelo lokuqhuba kunye neetheminali zalo ezipakishwe ngesixhobo sokugquma esiqinileyo. Kuba izixhobo zayo zokugquma ezomeleleyo ziyi-epoxy resin, irabha ye-silicone yamandla kunye ne-adhesive, njl. Ipali yenziwe kumda wesiphaluka esingundoqo. Kwinkqubo yokuvelisa, ipali kufuneka iqinisekise ukuba ukusebenza kwe-vacuum interrupter ayiyi kuncitshiswa okanye ilahleke, kwaye umphezulu wayo kufuneka ube tyaba kwaye ugudileyo, kwaye kungabikho ukukhululeka, ukungcola, amaqamza okanye iipores ezinciphisa iimpawu zombane kunye nezomatshini. , kwaye akufanele kubekho iziphene ezifana neentanda. . Ngaphandle koku, izinga lokwaliwa kweemveliso zepali ezitywiniweyo ezingama-40.5 kV lisephezulu noko, kwaye ilahleko ebangelwe ngumonakalo wesiphazamisi sevacuum yintlungu ebuhlungu kwiiyunithi ezininzi zokwenza izinto. Isizathu kukuba izinga lokugatywa libangelwa ikakhulu kukuba isibonda asikwazi ukuhlangabezana neemfuno zokugquma. Umzekelo, kwi-95 kV 1 min frequency yamandla okumelana novavanyo lokugquma i-voltage, kukho isandi sokukhupha okanye isiganeko sokuphazamiseka ngaphakathi kwi-insulation ngexesha lovavanyo.
Ukusuka kumgaqo-siseko we-high-voltage insulation, siyazi ukuba inkqubo yokutshatyalaliswa kombane yombane oqinileyo ifana negesi. I-avalanche ye-electron yenziwa yi-ionization yempembelelo. Xa i-avalanche ye-electron yomelele ngokwaneleyo, isakhiwo se-dielectric lattice sitshabalaliswa kwaye ukuphuka kubangelwa. Kwiimathiriyeli ezininzi zokugquma ezisetyenziswa kwipali etywiniweyo eqinileyo, owona mbane uphezulu unokumelana nobukhulu beyunithi ngaphambi kokuqhekeka, oko kukuthi, amandla entsimi okuqhekeka okungokwemvelo, aphezulu kakhulu, ngakumbi i-Eb ye-epoxy resin ≈ 20 kV/mm. Nangona kunjalo, ukufana kwentsimi yombane kunempembelelo enkulu kwiipropati ze-insulating medium medium. Ukuba kukho intsimi yombane eyomeleleyo kakhulu ngaphakathi, nokuba i-insulating material inobunzima obaneleyo kunye nomda we-insulation, zombini uvavanyo lwe-voltage yokumelana kunye novavanyo lokukhupha inxalenye luyagqithiswa xa ushiya umzi-mveliso. Emva kwexesha lokusebenza, ukusilela kokuqhekeka kwe-insulation kusenokwenzeka rhoqo. Isiphumo sendawo yombane yasekhaya yomelele kakhulu, njengephepha lokukrazula, uxinzelelo olugxininiswe kakhulu luya kusetyenziswa kwindawo nganye yesenzo ngokulandelelana, kwaye isiphumo kukuba amandla angaphantsi kakhulu kumandla okuqina ephepha anokukrazula yonke into. iphepha. Xa indawo yombane enamandla kakhulu yendawo isebenza kwizinto ezikhuselayo kwi-insulation organic, iya kuvelisa "i-cone hole" isiphumo, ukwenzela ukuba izinto zokukhusela ziqhekeke ngokuthe ngcembe. Nangona kunjalo, kwinqanaba lokuqala, kungekuphela nje amandla aqhelekileyo okumelana nombane kunye novavanyo lokukhutshwa ngokuyinxenye alukwazanga ukubona le ngozi efihliweyo, kodwa akukho ndlela yokuyifumanisa, kwaye inokuqinisekiswa kuphela yinkqubo yokuvelisa. Ke ngoko, imida yemigca ephumayo ephezulu nasezantsi yepali etywiniweyo eqinileyo kufuneka iguqulwe kwi-arc yesetyhula, kwaye iradiyasi kufuneka ibe nkulu ngokusemandleni ukulungiselela ukusasazwa kwendawo yombane. Ngexesha lenkqubo yokuvelisa isibonda, kumajelo aqinileyo afana ne-epoxy resin kunye nerubha ye-silicone yamandla, ngenxa yempembelelo eqokelelweyo yendawo okanye umahluko wevolumu ekuqhekekeni, amandla entsimi yokuqhekeka anokuba ahluke, kunye nentsimi yokuqhekeka kwendawo enkulu. indawo okanye umthamo ungahluka. Ke ngoko, i-medium eqinile efana ne-epoxy resin kufuneka ixutywe ngokulinganayo ngokuxuba izixhobo ngaphambi kokuba i-encapsulation kunye nokunyanga, ukuze kulawulwe ukusasazeka kwamandla entsimi.
Kwangaxeshanye, ekubeni i-slid medium is non-self-recovery insulation, ipali iphantsi kovavanyo oluninzi. Ukuba indawo eqinileyo yonakaliswe ngokuyinxenye phantsi kombane wovavanyo ngalunye, phantsi kwesiphumo esongezelekayo kunye nombane wovavanyo oluninzi, lo monakalo ungaphelelanga uya kwandiswa kwaye ekugqibeleni ukhokelele ekuqhekekeni kwepali. Ke ngoko, umda we-insulation wepali kufuneka uyilwe ukuba ube mkhulu ukuthintela umonakalo kwipali ngombane wovavanyo oluchaziweyo.
Ukongeza, izikhewu zomoya ezenziwe kukuncamatheliswa kakubi kwemithombo yeendaba eyomeleleyo kwikholamu yepali okanye amaqamza omoya kwindawo eqinileyo ngokwayo, phantsi kwentshukumo yombane, isithuba somoya okanye umsantsa womoya uphezulu kunalowo ukwindawo eqinileyo. phakathi ngenxa yamandla aphezulu entsimi kwisithuba somoya okanye kwiqamza. Okanye ukomelela kwebala lokuqhekeka kwamaqamza kusezantsi kakhulu kunoko okuqinileyo. Ke ngoko, kuya kubakho ukukhutshwa okungaphelelanga kumaqamza kwindawo eqinileyo yesibonda okanye ukukhutshwa kwe-breakdown kwizithuba zomoya. Ukusombulula le ngxaki yokugquma, kucacile ukuthintela ukuvela kwezithuba zomoya okanye amaqamza: ① Umphezulu wokudityaniswa ungaphathwa njengomphezulu we-matte efanayo (umphezulu we-vacuum interrupter) okanye umphezulu womngxuma (umphezulu werabha yesilicone), kunye nokusetyenziswa. i-adhesive efanelekileyo yokudibanisa ngokufanelekileyo umgangatho wokudibanisa. ②Imathiriyeli ekrwada egqwesileyo kunye nezixhobo zokugalela zingasetyenziswa ukuqinisekisa ukugquma kwendawo eqinileyo.

3 Uvavanyo lwe-epoxy resin insulation
Ngokubanzi, izinto zovavanyo olusisinyanzelo ekufuneka lwenzelwe iindawo zokugquma ezenziwe nge-epoxy resin zezi:
1) Ukubonakala okanye ukuhlolwa kwe-X-ray, ukuhlolwa kobungakanani.
2) Uvavanyo lokusingqongileyo, olufana novavanyo lomjikelo obandayo kunye nobushushu, uvavanyo lokungcangcazela koomatshini kunye novavanyo lwamandla omatshini, njl.
3) Uvavanyo lwe-insulation, olufana novavanyo lokukhupha inxalenye, ukuphindaphinda kwamandla okumelana novavanyo lwe-voltage, njl.

4 Isiphelo
Isishwankathelo, namhlanje, xa i-epoxy resin insulation isetyenziswa ngokubanzi, kufuneka sisebenzise ngokuchanekileyo iipropathi zokugquma i-epoxy resin ukusuka kwimiba ye-epoxy resin insulation parts inkqubo yokuvelisa kunye noyilo lombane lokuphucula intsimi kwizixhobo zamandla ukwenza i-epoxy resin insulation parts. Ukusetyenziswa kwizixhobo zamandla kugqibelele ngakumbi.