Sebopeho sa mohala se bonahala se le bonolo, ha e le hantle, karolo e 'ngoe le e' ngoe ea eona e na le morero oa eona oa bohlokoa, kahoo thepa e 'ngoe le e' ngoe ea karolo e lokela ho khethoa ka hloko ha ho etsoa mohala, e le ho tiisa hore ho tšepahala ha mohala o entsoeng ka thepa ena nakong ea ts'ebetso.
1. Lisebelisoa tsa mokhanni
Ho tloha khale, thepa e neng e sebelisoa bakeng sa li-conductors tsa motlakase e ne e le koporo le aluminium. Sodiamo le eona e ile ea lekoa ka nakoana. Koporo le aluminium li na le conductivity e ntle ea motlakase, 'me palo ea koporo e batla e fokola ha e fetisa hona joale, kahoo bophara bo ka ntle ba mochine oa koporo bo nyane ho feta ba aluminium conductor. Theko ea aluminium e tlase haholo ho feta koporo. Ho phaella moo, hobane boima ba koporo bo boholo ho feta ba aluminium, esita le haeba matla a hona joale a ho jara a tšoana, karolo ea sefapano sa conductor ea aluminium e kholo ho feta ea koporo ea koporo, empa thapo ea aluminium conductor e ntse e le bobebe ho feta thapo ea koporo ea koporo. .
2. Lisebelisoa tsa insulation
Ho na le lisebelisoa tse ngata tse sireletsang matla tseo likhoele tsa motlakase tsa MV li ka li sebelisang, esita le ho kenyelletsa le thepa ea ho kenya pampiri e kentsoeng ka botekgeniki, e 'nileng ea sebelisoa ka katleho lilemo tse fetang 100. Kajeno, ho kenngoa ha polymer ea extruded ho amohetsoe hohle. Lisebelisoa tsa polymer tse atolositsoeng li kenyelletsa PE(LDPE le HDPE), XLPE, WTR-XLPE le EPR. Lisebelisoa tsena ke thermoplastic hammoho le thermosetting. Lisebelisoa tsa thermoplastic lia senyeha ha li futhumala, ha lisebelisoa tsa thermoset li boloka sebopeho sa tsona mochesong oa ts'ebetso.
2.1. Ho kenya pampiri
Qalong ea ts'ebetso ea bona, likhoele tse kentsoeng pampiring li jara moroalo o monyane feela 'me li batla li hlokometsoe hantle. Leha ho le joalo, basebelisi ba matla ba tsoela pele ho etsa hore mohala o jere mojaro o phahameng le ho feta, maemo a pele a tšebeliso ha a sa tšoanela litlhoko tsa mohala oa hona joale, joale phihlelo e ntle ea pele e ke ke ea emela ts'ebetso ea nako e tlang ea thapo e lokela ho ba e ntle. . Lilemong tsa morao tjena, lithapo tse sirelelitsoeng ka pampiri li 'nile tsa sebelisoa seoelo.
2.2.PVC
PVC e ntse e sebelisoa e le thepa e sireletsang bakeng sa likhoele tsa 1kV tse nang le matla a tlase hape ke thepa ea ho sheathing. Leha ho le joalo, ts'ebeliso ea PVC ho insulation ea cable e nkeloa sebaka ka potlako ke XLPE, 'me kopo e sheath e nkeloa sebaka ka potlako ke linear low density polyethylene (LLDPE), medium density polyethylene (MDPE) kapa polyethylene e phahameng (HDPE), le e seng. - Lithapo tsa PVC li na le litšenyehelo tse tlase tsa potoloho ea bophelo.
2.3. Polyethylene (PE)
Low density polyethylene (LDPE) e ntlafalitsoe ka bo-1930 'me joale e se e sebelisoa e le resin ea motheo ea crosslinked polyethylene (XLPE) le thepa e sa keneleng metsi ea crosslinked polyethylene (WTR-XLPE). Sebakeng sa thermoplastic, mocheso o phahameng oa ho sebetsa oa polyethylene ke 75 ° C, o tlase ho feta mocheso o sebetsang oa lithapo tse kentsoeng pampiring (80 ~ 90 ° C). Bothata bona bo rarollotsoe ka ho fihla ha polyethylene e kopantsoeng ka sefapano (XLPE), e ka kopanang kapa e fetang mocheso oa tšebeletso oa lithapo tse entsoeng ka pampiri.
2.4.Polyethylene e kopantsoeng ka sefapano (XLPE)
XLPE ke thepa ea thermosetting e entsoeng ka ho kopanya polyethylene e tlaase-tlaase (LDPE) le motsoako oa crosslinking (joaloka peroxide).
Mocheso o phahameng ka ho fetisisa oa mochine o sebetsang oa XLPE insulated cable ke 90 ° C, teko ea overload e fihla ho 140 ° C, 'me mocheso o khutšoanyane oa potoloho o ka fihla ho 250 ° C. XLPE e na le litšobotsi tse ntle tsa dielectric 'me e ka sebelisoa ka har'a marang-rang. 600V ho isa ho 500kV.
2.5. Sefate se hananang le metsi polyethylene e hokahantsoeng (WTR-XLPE)
Ketsahalo ea sefate sa metsi e tla fokotsa bophelo ba tšebeletso ea cable ea XLPE. Ho na le mekhoa e mengata ea ho fokotsa ho hōla ha lifate tsa metsi, empa e 'ngoe ea tse amoheloang ka ho fetisisa ke ho sebelisa lisebelisoa tse khethehileng tse entsoeng ka boenjiniere tse etselitsoeng ho thibela ho hōla ha lifate tsa metsi, tse bitsoang sefate se sa keneleng metsi cross-linked polyethylene WTR-XLPE.
2.6. Ethylene propylene rabara (EPR)
EPR ke thepa ea thermosetting e entsoeng ka ethylene, propylene (ka linako tse ling monoma ea boraro), 'me copolymer ea li-monomers tse tharo e bitsoa ethylene propylene diene rubber (EPDM). Ka holim'a mefuta e mengata ea mocheso, EPR e lula e le bonolo 'me e na le khanyetso e ntle ea corona. Leha ho le joalo, tahlehelo ea dielectric ea thepa ea EPR e phahame haholo ho feta ea XLPE le WTR-XLPE.
3. Ts'ebetso ea vulcanization ea insulation
Ts'ebetso ea crosslinking e ikhethile ho polymer e sebelisitsoeng. Ho etsoa ha li-polymers tse pota-potiloeng ho qala ka polymer ea matrix, ebe li-stabilizer le li-crosslinkers li kenngoa ho etsa motsoako. Ts'ebetso ea ho kopanya e eketsa lintlha tse ling tsa khokahanyo ho sebopeho sa limolek'hule. Hang ha e se e hokahane, ketane ea limolek'hule ea polymer e lula e tsitsitse, empa e ke ke ea aroloa ka botlalo hore e be mokelikeli o qhibilihang.
4. Tšireletso ea li-conductor le lisebelisoa tse sireletsang tšireletso
The semi-conductive shielding lera e extruded holim'a bokantle ba conductor le insulation ho junifomo tšimo ea motlakase le ho ba le tšimo ea motlakase ka kabel insulated konokono. Boitsebiso bona bo na le boemo ba boenjiniere ba lisebelisoa tse ntšo tsa carbon ho nolofalletsa lera le sireletsang la cable ho finyella conductivity e tsitsitseng ka har'a mefuta e hlokahalang.
Nako ea poso: Apr-12-2024