Kachulukidwe ndi mamasukidwe akayendedwe a mafuta a transformer

Kuchuluka kwamafuta a Transformer

Mawonekedwe amitundu yonse yamafuta a thiransifoma amaonedwa kuti ndi kudalira pang'ono kwa kachulukidwe kalozera pa kutentha kwakunja ndi mtengo wotsika wamalo okhuthala (mwachitsanzo, mafuta amtundu wa TKp, chomaliza ndi -45).^°C, ndi T-1500 - ngakhale -55 ° C).

Miyezo yamafuta osinthika amtundu wamafuta amasiyanasiyana kutengera kuchuluka kwamafuta mumitundu (0,84…0,89)×10³ kg/m³. Zina zomwe zimakhudza kachulukidwe ndi izi:

• Chemical zikuchokera (kukhalapo zina, waukulu umene ndi ionol).
• Thermal conductivity.
• Viscosity (yamphamvu ndi kinematic).
• Thermal diffusivity.

Kuwerengera kuchuluka kwa magwiridwe antchito, kachulukidwe ka mafuta a thiransifoma amatengedwa ngati mtengo wofotokozera (makamaka, kudziwa momwe mikangano yamkati imakhudzira kuzizira kwa sing'anga).

Kachulukidwe wa mafuta a transformer omwe amagwiritsidwa ntchito

Pozimitsa kutulutsa kwamagetsi komwe kungachitike mkati mwa nyumba ya thiransifoma, mafutawo amakhala oipitsidwa ndi tinthu tating'ono tating'ono tating'onoting'ono tamagetsi, komanso zinthu zomwe zimakhudzidwa ndi mankhwala. Pamalo otentha kwambiri, amatha kuchitika m'malo amafuta. Chifukwa chake, pakapita nthawi, kuchuluka kwa mafuta kumawonjezeka. Izi zimabweretsa kuchepa kwa kuzirala kwamafuta ndi mawonekedwe a milatho yotheka yomwe imachepetsa chitetezo chamagetsi cha thiransifoma. Mafutawa ayenera kusinthidwa. Zimachitika pambuyo pa maola angapo ogwiritsira ntchito chipangizocho, chomwe nthawi zambiri chimasonyezedwa ndi wopanga. Komabe, ngati thiransifoma ikugwiritsidwa ntchito pansi pa malire, kufunikira kosinthidwa kungawonekere kale.

Kwa mankhwala opangidwa ndi parafini, kuwonjezeka kwa kachulukidwe ka mafuta a thiransifoma kumakhalanso chifukwa chakuti zinthu za okosijeni (sludge) sizisungunuka ndipo zimakhazikika pansi pa thanki. Chida ichi chimagwira ntchito ngati cholepheretsa kuzirala. Kuphatikiza apo, kuchuluka kwamafuta a macromolecular kumawonjezera kutsanulira kwamafuta.

Kuyesa zenizeni za index of density index ikuchitika motere:

1. Zitsanzo zamafuta zimatengedwa m'malo osiyanasiyana a thanki. Izi ndichifukwa choti kuwonongeka kwa dielectric kumagwirizana mosagwirizana ndi zomwe zili m'madzi, zomwe zikutanthauza kuti mphamvu ya dielectric yamafuta osinthira imachepa pamene madzi akuwonjezeka.
2. Pogwiritsa ntchito densitometer, yesani kuchuluka kwa mafuta ndikuyerekeza ndi mfundo zomwe zikulimbikitsidwa.
3. Kutengera kuchuluka kwa maola omwe mafuta akhala akuyenda mu thiransifoma, mwina kuchuluka kwamafuta atsopano akuwonjezeredwa, kapena akale amasefedwa mosamala.

Viscosity ya mafuta a transformer

Viscosity ndi chikhalidwe chomwe chimakhudza kutentha kwa kutentha mkati mwa nkhokwe ya mafuta. Kuwerengera kwa viscosity nthawi zonse kumakhalabe gawo lofunikira posankha mafuta amtundu uliwonse wamagetsi amagetsi. Ndikofunikira kwambiri kudziwa makulidwe amafuta a thiransifoma pa kutentha kwambiri. Malinga ndi zofunikira za muyezo wa boma, kutsimikiza kwa kinematic ndi viscosity yamphamvu kumachitika pa kutentha kwa 40.^°C ndi 100^°C. Pamene thiransifoma imagwiritsidwa ntchito kwambiri panja, muyeso wowonjezera umachitidwanso pa kutentha kwa 15.^°C.

Kulondola kwa kutsimikiza kwa viscosity kumawonjezeka ngati index refractive ya sing'anga imawunikidwanso mofanana ndi refractometer. Kuchepa kwapang'onopang'ono kwamakhalidwe a viscosity omwe amapezedwa pa kutentha kosiyanasiyana, kumapangitsanso mafuta kukhala abwino. Kuti mukhazikitse zizindikiro za viscosity, tikulimbikitsidwa kuti nthawi ndi nthawi hydrotreat thiransifoma mafuta.

Mayeso amafuta a Transformer