Kupititsa patsogolo Moyo Wachingwe wa XLPE Ndi Ma Antioxidants

Udindo wa Ma Antioxidants Pakukulitsa Moyo Wama Cable A Polyethylene (XLPE) Insulated Cables

Polyethylene yolumikizidwa (XLPE)ndi chinthu choyambirira chotetezera chomwe chimagwiritsidwa ntchito pazingwe zapakati komanso zamphamvu kwambiri. M'moyo wawo wonse wogwira ntchito, zingwezi zimakumana ndi zovuta zosiyanasiyana, kuphatikiza kusiyanasiyana kwanyengo, kusinthasintha kwa kutentha, kupsinjika kwamakina, komanso kuyanjana kwamankhwala. Zinthu izi pamodzi zimakhudza kukhalitsa ndi moyo wautali wa zingwe.

Kufunika kwa Antioxidants mu XLPE Systems

Kuonetsetsa kuti moyo wautali wautumiki wa zingwe za XLPE-insulated, kusankha antioxidant yoyenera pa polyethylene system ndikofunikira. Ma Antioxidants amagwira ntchito yofunika kwambiri poteteza polyethylene kuti isawonongeke ndi okosijeni. Pochitapo kanthu mwachangu ndi ma free radicals opangidwa mkati mwazinthu, ma antioxidants amapanga zinthu zokhazikika, monga ma hydroperoxides. Izi ndizofunikira kwambiri chifukwa njira zambiri zolumikizirana XLPE zimakhala zochokera ku peroxide.

Kuwonongeka kwa Ma polima

M'kupita kwa nthawi, ma polima ambiri pang'onopang'ono amakhala osalimba chifukwa cha kuwonongeka kosalekeza. Mapeto a moyo wa ma polima nthawi zambiri amatanthauzidwa ngati pamene kutalika kwawo kumatsika mpaka 50% ya mtengo woyambirira. Kupitirira malire awa, ngakhale kupindika pang'ono kwa chingwe kungayambitse kusweka ndi kulephera. Miyezo yapadziko lonse lapansi nthawi zambiri imatengera muyeso wa ma polyolefin, kuphatikiza ma polyolefin olumikizana ndi mtanda, kuti awone momwe zinthu zikuyendera.

Arrhenius Model for Cable Life Prediction

Ubale pakati pa kutentha ndi moyo wa chingwe umafotokozedwa kawirikawiri pogwiritsa ntchito Arrhenius equation. Masamu amtunduwu amawonetsa kuchuluka kwa ma chemical reaction monga:

K= D e(-Ea/RT)

Kumene:

K: Mlingo wodziwika bwino

D: Nthawi zonse

Ea: Mphamvu yoyambitsa

R: Boltzmann mpweya wokhazikika (8.617 x 10-5 eV/K)

T: Kutentha kotheratu ku Kelvin (273+ Temp mu °C)

Kusinthidwa mwachiwerengero cha algebra, equation ikhoza kufotokozedwa ngati mawonekedwe a mzere: y = mx+b

Kuchokera ku equation iyi, activation energy (Ea) ikhoza kutengedwa pogwiritsa ntchito deta yojambula, kupangitsa kulosera molondola kwa moyo wa chingwe pansi pa zochitika zosiyanasiyana.

Mayeso Okalamba Ofulumira

Kuti mudziwe kutalika kwa moyo wa zingwe za XLPE-insulated, zoyeserera ziyenera kuyesedwa kukalamba mwachangu pa kutentha kocheperako katatu (makamaka anayi). Kutentha uku kuyenera kupitilira mulingo wokwanira kuti akhazikitse mgwirizano pakati pa nthawi ndi kulephera ndi kutentha. Makamaka, kutentha kwapang'onopang'ono kuyenera kupangitsa kuti pakhale nthawi yayitali mpaka kumapeto kwa maola osachepera 5,000 kuti zitsimikizire kutsimikizika kwazomwe zayesedwa.

Pogwiritsa ntchito njira yokhwimayi ndikusankha ma antioxidants apamwamba kwambiri, kudalirika kwa magwiridwe antchito ndi moyo wautali wa zingwe za XLPE-insulated zitha kukulitsidwa kwambiri.