Mvura Inovhara Cable Materials
Zvishandiso zvekuvharisa mvura zvinogona kupatsanurwa kuita mapoka maviri: inovharika yemvura inovharira uye yekuvharisa mvura inovhara. Kuvhara mvura kunoshanda kunoshandisa mvura-inosveta uye kuzvimba zvimiro zvezvinhu zvinoshanda. Kana sheath kana mubatanidzwa wakuvadzwa, zvinhu izvi zvinowedzera pakubata nemvura, zvichidzikamisa kupinda kwayo mukati metambo. Zvinhu zvakadai zvinosanganisiramvura inonwisa kuwedzera gel, tepi yekuvhara mvura, poda yekuvhara mvura,shinda yekuvhara mvura, uye tambo inovhara mvura. Kuvharira mvura kuvharika, kune rumwe rutivi, inoshandisa hydrophobic zvinhu kuvhara mvura kunze kwetambo kana sheath yakuvadzwa. Mienzaniso yezvivharo zvemvura zvinovharira paste ine petroleum-filled paste, inopisa melt adhesive, uye kupisa-kuwedzera paste.
I. Passive Water Blocking Materials
Kuzadzwa kwezvinhu zvinovharisa mvura, senge petroleum paste, mumatambo ndiyo yaive nzira yekutanga yekuvharisa mvura mumatambo emagetsi ekutanga. Iyi nzira inodzivirira kuti mvura isapinde mutambo asi ine zvinotevera zvinokanganisa:
1.Iyo inonyanya kuwedzera uremu hwetambo;
2.Iyo inokonzera kuderedzwa kwetambo conductive performance;
3.Petroleum paste inosvibisa zvakanyanya majoini etambo, zvichiita kuti kuchenesa kuve kwakaoma;
4.Kuzadza kwakazara kwakaoma kudzora, uye kuzadza kusina kukwana kunogona kuguma nekushaya mvura-kuvhara kushanda.
II. Active Mvura Inovhara Zvinhu
Parizvino, zvinhu zvinovharisa mvura zvinoshandiswa mumatambo zvakanyanya tepi inovharisa mvura, hupfu inovharisa mvura, tambo inovhara mvura, uye shinda inovharisa mvura. Kana ichienzaniswa nepetroleum paste, zvinhu zvekuvhara mvura zvinoshanda zvine maitiro anotevera: kunyura kwemvura yakakwira uye kukwirira kwekuzvimba. Vanogona kutora mvura nekukasira uye kuzvimba nekukasira kuita gel-sechinhu chinovharira kupinza kwemvura, nekudaro kuve nechokwadi chekuchengetedzwa kwetambo. Pamusoro pezvo, zvinhu zvinovharisa mvura zvine huremu, zvakachena, uye zviri nyore kuisa nekujoinha. Zvisinei, vanewo zvimwe zvipingamupinyi:
1.Water-blocking powder yakaoma kubatanidza zvakafanana;
2.Water-blocking tepi kana shinda inogona kuwedzera dhayamita yekunze, kukanganisa kupisa kwekushisa, kukurumidza kuchembera kwetambo yekushisa, uye kuderedza simba rekufambisa kwetambo;
3.Active water blocking zvinhu zvinowanzodhura zvakanyanya.
Mvura Yekuvharira Ongororo: Parizvino, nzira huru muChina yekudzivirira mvura kuti ipinde mukati meiyo insulation layer yetambo ndeyekuwedzera iyo isingapinde mvura. Nekudaro, kuti tiwane kuvharika kwemvura kuvharika mumatambo, hatifanire kungofunga nezvekupinda kwemvura yeradial asi zvakare kudzivirira zvinobudirira kupararira kwemvura kana yapinda mutambo.
Polyethylene (Inner Sheath) Waterproof Isolation Layer: Kuwedzera polyethylene-yekuvharisa mvura, pamwe chete nehunyoro-inotora cushion layer (senge tepi inovharira mvura), inogona kusangana nezvinodiwa zvelongitudinal kuvharika kwemvura uye kuchengetedzwa kwemwando mumatambo akaiswa munzvimbo dzine unyoro zvine mwero. Iyo polyethylene-yekuvharira mvura layer iri nyore kugadzira uye haidi mimwe michina.
Plastic Coated Aluminium Tape Polyethylene Bonded Waterproof Isolation Layer: Kana tambo dzakaiswa mumvura kana munzvimbo dzakanyorova zvakanyanya, iyo radial mvura-inovharira simba re polyethylene yekuzviparadzanisa layer inogona kunge isina kukwana. Kune tambo dzinoda yakakwira radial mvura-kuvharira kuita, zvave kujairika kuputira layer yealuminium-plastiki composite tepi yakatenderedza cable core. Ichi chisimbiso mazana kana kunyange zviuru zvenguva yakawanda-inodzivirira mvura pane yakachena polyethylene. Chero bedzi seam ye tepi inosanganiswa yakanyatsobatanidzwa uye yakavharwa, kupinda kwemvura kunenge kusingabviri. Iyo aruminiyamu-yepurasitiki inoumba tepi inoda kureba yekuputira uye yekubatanidza maitiro, iyo inosanganisira yekuwedzera mari uye midziyo kugadzirisa.
Mukuita kweinjiniya, kuwana longitudinal kuvharika kwemvura kwakaoma kupfuura kuvharira mvura yeradial. Nzira dzakasiyana-siyana, dzakadai sekushandura dhizaini kuti iite yakatsikirirwa dhizaini, yakashandiswa, asi zvinokonzeresa zvave zvishoma nekuti pachine mikaha mune yakatsikirirwa conductor inobvumira mvura kupararira kuburikidza necapillary action. Kuti uwane yechokwadi longitudinal kuvharika kwemvura, zvinodikanwa kuzadza mapeji mune yakasungwa conductor nezvinhu zvinodzivirira mvura. Aya anotevera mazinga maviri ezviyero uye zvimiro zvinogona kushandiswa kuwana longitudinal mvura kuvharika mumatambo:
1.Kushandiswa kwemvura-kuvharira conductors. Wedzera tambo inovharisa mvura, hupfu hunovharira mvura, shinda inovharira mvura, kana kuputira tepi inovharisa mvura uchitenderedza conductor yakadzvanywa.
2.Kushandiswa kwemvura-kuvharira cores. Munguva yekugadzira tambo, zadza musimboti neshinda-inovharisa mvura, tambo, kana kuputira musimboti nesemi-conductive kana insulating mvura inovharira tepi.
Parizvino, dambudziko rakakosha mukudzivirira kwemvura kwenguva refu riri mumakonduri ekudzivirira-mvura-nzira yekuzadza zvinhu zvinovharira mvura pakati pemakonduri uye izvo zvinovharira mvura zvekushandisa zvinoramba zvichitariswa pakutsvaga.
Ⅲ. Mhedziso
Radial mvura inovharisa tekinoroji inonyanya kushandisa mvura-yekuvharisa mirairi yakaputirwa neyakavharisa conductor, ine cushion inotora unyoro yakawedzerwa kunze. Kune tambo dzepakati-voltage, tepi yealuminium-plastiki inoumbwa inowanzoshandiswa, nepo tambo dzepamusoro-soro dzinowanzoshandisa lead, aluminium, kana simbi isina tsvina yekuvharisa mabhachi.
Longitudinal mvura inovharira tekinoroji inonyanya kutarisisa pakuzadza mapeji pakati pematambo ekuitisa ane mvura-yekuvhara zvinhu kudzivirira kupararira kwemvura padivi pepakati. Kubva pazvino kuvandudzwa kwetekinoroji, kuzadza nemvura-kuvharira poda kunoshanda kune longitudinal kuvharika kwemvura.
Kuwana tambo dzisingapindi mvura zvinozokanganisa kupisa kwekupisa kwetambo uye conductive performance, saka zvakakosha kuti usarudze kana kugadzira iyo yakakodzera-yekuvhara mvura tambo chimiro zvichienderana nezvinodiwa neinjiniya.
Nguva yekutumira: Feb-14-2025