Kodi ANSI Ceramic Bushing ndi chiyani?

Mabatani a ceramic a ANSIndi zinthu zopangira ceramic bushing zomwe zimagwirizana ndi miyezo yaukadaulo yomwe yakhazikitsidwa ndi American National Standards Institute (ANSI). Zapangidwa mwapadera kuti zikwaniritse zofunikira zotetezera kutentha, chithandizo chamakina, ndi chitetezo cha zida zamagetsi zamagetsi ku North America ndi msika wapadziko lonse lapansi. Zimaphatikiza mawonekedwe abwino kwambiri a zida za ceramic ndi miyezo yokhwima ya miyezo ya ANSI. Ndi imodzi mwamagulu ofunikira a zida zotetezera kutentha zamagetsi zamagetsi mu dongosolo lamagetsi.
I. Tanthauzo Lofunika: Kodi chiganizo ndi chiyaniANSI Ceramic Bushing?
Ma bushing a ceramic a ANSI sakutanthauza mawonekedwe enaake, koma amapangidwa, kupangidwa, ndikuyesedwa mogwirizana ndi miyezo yoyenera ya ANSI (monga mndandanda wa ANSI C37 "High Voltage Switchgear Standards", mndandanda wa ANSI/IEEE C57 "Transformer Standards", ndi zina zotero). Chofunika kwambiri ndikuwonetsetsa kuti kutenthetsa kutentha kuli kodalirika, kukhazikika kwa makina, komanso kusinthana kwa chinthucho pamalo okwera magetsi kudzera mu miyeso yokhazikika, magawo ogwirira ntchito, ndi njira zoyesera, makamaka zoyenera ma gridi amphamvu aku North America ndi mapulojekiti apadziko lonse lapansi omwe amatsatira miyezo ya ANSI.
II. Miyezo Yofunika ya ANSI Yotsatiridwa
Kapangidwe ndi kupanga kwa ANSI ceramic bushings kuyenera kutsatira miyezo yosiyanasiyana. Miyezo yodziwika bwino yapakati ndi iyi:
​ANSI C37.04​: Imatchula magawo ovotera, mulingo woteteza kutentha, ndi njira zoyesera (monga mphamvu yolimbana ndi ma frequency voltage, mphezi yolimbana ndi magetsi) ya switchgear yamagetsi okwera (kuphatikiza ma bushings);
​ANSI C37.34Zofunikira zaukadaulo zama bushings amphamvu kwambiri, kuphatikiza kulekerera kwa mawonekedwe, katundu wamakina (wokoka, kupindika, wopotoka), ndi magwiridwe antchito olimba a kutentha;
​ANSI/IEEE C57.19.01Miyezo ya ma bushing a transformer, yomwe imafotokoza momveka bwino mphamvu yamagetsi yovotera, mphamvu yamagetsi yovotera, malire okwera kwa kutentha, ndi magwiridwe antchito otseka ma bushing;
Mndandanda wa ANSI C29​: Miyezo yoyesera mphamvu ya makina ndi magwiridwe antchito amagetsi a zotetezera kutentha zakunja (kuphatikiza ma bushings a positi/through-wall) (monga mphamvu yopindika, mayeso a kuipitsidwa kwa mpweya);
Miyezo iyi imatsimikizira kuti zimagwirizana (monga momwe miyeso yokhazikitsira imagwirizana) komanso kudalirika (kudzera mu mayeso okhwima ogwirizana) kwa ma bushings a ANSI ceramic pakati pa opanga ndi magulu osiyanasiyana.
III. Makhalidwe a Kapangidwe ndi Zinthu (Okonzedwanso Kutengera Miyezo ya ANSI)
Kapangidwe ka ma bushing a ceramic a ANSI ndi kofanana ndi ka ma bushing a ceramic wamba. Komabe, chifukwa cha zofunikira mwatsatanetsatane za miyezo ya ANSI, kusankha zinthu ndi kapangidwe kake katsatanetsatane kumagogomezera kwambiri kusinthasintha kokhazikika:
1. Chotetezera cha Ceramic
Kusankha Zinthu​​: Gwiritsani ntchito bwino ceramic ya aluminiyamu oxide yoyera kwambiri (Al₂O₃ content ≥ 95%) kapena silicon dioxide ceramic (monga momwe ASTM C609 standard imafotokozera kuti “ceramic yamagetsi”) kuti muwonetsetse kuti kukana kwa insulation (≥ 10¹³ Ω·cm), mphamvu ya dielectric (≥ 15 kV/mm), ndi mphamvu ya makina (mphamvu yopindika ≥ 150 MPa) zikukwaniritsa miyezo.
Kapangidwe ka Kapangidwe:
* Ma bushing akunja nthawi zambiri amakhala ndi chiwerengero ndi mtunda wa masiketi a ambulera omwe afotokozedwa ndi miyezo ya ANSI (monga kusiyana kwa m'mimba mwake ndi kutalika kwa ambulera ya gawo lililonse), kuti akwaniritse zofunikira pa mtunda wa creepage (monga chiŵerengero cha creepage cha bushing cha 10 kV ≥ 25 mm/kV);
* Ma bushing amkati nthawi zambiri amakhala osalala kapena okhala ndi masiketi osaya a ambulera, omwe amayang'ana kwambiri miyeso yaying'ono (yogwirizana ndi zofunikira za kulolerana kwa ANSI C37.34, monga kupindika kwa m'mimba mwake ≤ ± 0.5 mm).
2. Zipangizo Zachitsulo
Zivundikiro/ulusi wachitsulo kumapeto onse awiri umagwiritsa ntchito zipangizo zachitsulo kapena zamkuwa mogwirizana ndi miyezo ya ANSI B16.5 (monga chitsulo cha carbon galvanized, chitsulo chosapanga dzimbiri 304), zomwe zimathandiza kuti dzimbiri lisawonongeke.
Kukula kwa malo olumikizira kumatsatira kwambiri miyezo ya ANSI (monga kukula kwa bolt hole, kufotokozera kwa ulusi), kuonetsetsa kuti zimasinthana mwachindunji ndi mabasi ndi zolumikizira za chingwe zomwe zimagwiritsidwa ntchito kwambiri ku North America (palibe chifukwa chosinthira zina).
3. Kutseka ndi Kuteteza(pa malo akunja/onyowa) Mogwirizana ndi zofunikira za ANSI C57.19.01, kapangidwe kotsekedwa kawiri kamatengedwa (kokhala ndi rabara ya silicone yotentha kwambiri kapena epoxy resin yodzaza mpata pakati pa thupi la ceramic ndi cholumikizira chachitsulo), ndipo "kuyesa kumiza m'madzi" (monga kukana kwa kutenthetsa komwe kutsala ≥ 100 MΩ pambuyo pa maola 24 a kumizidwa m'madzi) kumachitika kuti zitsimikizire kuti sizinyowa mumvula yambiri komanso m'malo okhala chinyezi chambiri.