nkhani

Maziko akuluakulu aukadaulo posankha chingwe cha coaxial pazifukwa zina ndizinthu zake zamagetsi, zida zamakina ndi mawonekedwe achilengedwe.M'madera ena, ntchito yamoto ndi yofunikanso.Zonsezi zimadalira mawonekedwe a chingwe ndi zipangizo zomwe zimagwiritsidwa ntchito.
Zinthu zamagetsi zofunika kwambiri pa chingwecho ndikuchepetsa pang'ono, kutsekeka kwa yunifolomu, kutayika kwakukulu kobwerera, komanso nsonga yofunikira pa chingwe chotayira ndikutayika kwake kolumikizana bwino.Zofunika kwambiri zamakina ndizomwe zimasinthasintha (makamaka pa kutentha kochepa), mphamvu zolimba, mphamvu zopondereza komanso kukana kuvala.Zingwe ziyeneranso kupirira zovuta zachilengedwe panthawi yoyendetsa, kusunga, kukhazikitsa ndi kugwiritsa ntchito.Mphamvu zimenezi zikhoza kukhala chifukwa cha nyengo, kapena zikhoza kukhala chifukwa cha mmene zinthu zilili ndi zinthu zachilengedwe.Ngati chingwecho chimayikidwa pamalo omwe ali ndi zofunikira zotetezera moto, ntchito yake yamoto ndiyofunikanso kwambiri, yomwe ili ndi zinthu zitatu zofunika kwambiri: kuchedwa kwachangu, kutsekemera kwa utsi ndi kutulutsa mpweya wa halogen.

Ntchito yaikulu ya chingwe ndi kutumiza zizindikiro, choncho nkofunika kuti mawonekedwe a chingwe ndi zipangizo zipereke makhalidwe abwino opatsirana pa moyo wonse wa chingwe, zomwe zidzakambidwe mwatsatanetsatane pansipa.
1. Kondakitala wamkati
Mkuwa ndiye chinthu chachikulu cha woyendetsa wamkati, chomwe chingakhale m'njira zotsatirazi: waya wamkuwa wonyezimira, chubu chamkuwa, waya wokutidwa ndi aluminium.Nthawi zambiri, kondakitala wamkati wa zingwe zing'onozing'ono ndi waya wamkuwa kapena waya wovala mkuwa wa aluminiyamu, pomwe zingwe zazikulu zimagwiritsa ntchito machubu amkuwa kuti achepetse kulemera kwa chingwe ndi mtengo wake.Chingwe chachikulu chakunja chakunja ndi chamizeremizere, kuti ntchito yopindika yokwanira ipezeke.
Woyendetsa wamkati ali ndi chikoka chachikulu pa kufalitsa chizindikiro chifukwa chochepetsera makamaka chifukwa cha kukana kutayika kwa woyendetsa mkati.The conductivity, makamaka conductivity pamwamba, ayenera kukhala mkulu mmene ndingathere, ndipo chofunika ambiri ndi 58MS/m (+20 ℃), chifukwa pa pafupipafupi mkulu, panopa amafalitsidwa mu wosanjikiza woonda pamwamba kondakitala pamwamba, chodabwitsa ichi. amatchedwa skin effect, ndipo makulidwe ogwira mtima a wosanjikiza wapano amatchedwa kuya kwa khungu.Gome 1 likuwonetsa kuya kwa khungu kwa machubu amkuwa ndi mawaya a aluminiyamu ovala mkuwa ngati ma conductor amkati pamafuridwe apadera.
Ubwino wa zinthu zamkuwa zomwe zimagwiritsidwa ntchito mu conductor wamkati ndizokwera kwambiri, zomwe zimafuna kuti zinthu zamkuwa zikhale zopanda zonyansa, komanso pamwamba pake ndi zoyera, zosalala komanso zosalala.The m'mimba mwa kondakitala ayenera kukhala okhazikika ndi tolerances yaing'ono.Kusintha kulikonse m'mimba mwake kumachepetsa kufanana kwa impedance ndikubwezeretsanso kutayika, chifukwa chake njira yopangira iyenera kuyendetsedwa bwino.

2. Kondakitala wakunja
Woyendetsa kunja ali ndi ntchito ziwiri zofunika: yoyamba ndi ntchito ya loop conductor, ndipo yachiwiri ndi ntchito yoteteza.Kondakitala wakunja wa chingwe chotayikira amatsimikiziranso momwe ntchito yake ikudutsira.Kondakitala wakunja wa chingwe cha coaxial feeder ndi chingwe chofewa kwambiri chimawotchedwa ndi chitoliro chamkuwa chokulungidwa.Woyendetsa kunja kwa zingwezi watsekedwa kwathunthu, zomwe sizilola kuti ma radiation aliwonse achoke pa chingwe.
Kondakitala wakunja nthawi zambiri amakutidwa ndi tepi yamkuwa.Pali notche zotalika kapena zopingasa kapena mabowo pagawo lakunja la conductor.Kukula kwa kokondakita wakunja kumakhala kofala mu chingwe chamalata.Nsonga za corrugation zimapangidwa ndi ma equidistant kudula grooves motsatira njira ya axial.Gawo la gawo lodulidwa ndilochepa, ndipo malo otsetsereka ndi ochepa kwambiri kuposa kutalika kwa mafunde a electromagnetic wave.
Mwachiwonekere, chingwe chosadutsitsa chikhoza kupangidwa kukhala chingwe chotayikira pochichinga motere: chiwongolero chakunja cha kondakitala wa chingwe chamalata wamba mu chingwe chosadukiza chimadulidwa pa Angle ya madigiri 120 kuti mupeze seti yoyenera. kapangidwe ka slot.
Mawonekedwe, m'lifupi ndi kagawo kakang'ono ka chingwe chotayikira chimatsimikizira momwe amagwirira ntchito.
Zida zamkuwa zopangira akunja ziyeneranso kukhala zamtundu wabwino, zokhala ndi ma conductivity apamwamba komanso zopanda zonyansa.Kukula kwa kondakitala wakunja kuyenera kuyang'aniridwa mosamalitsa mkati mwa kulolerana kuti zitsimikizire kuti yunifolomu yaimfa komanso kutayika kwakukulu kobwerera.
Ubwino wowotcherera wokonda wakunja wa chubu chamkuwa ndi motere:
Chotsekeredwa kwathunthu Kondakitala wakunja wotetezedwa kotheratu yemwe alibe ma radiation ndipo amaletsa chinyezi kuti zisalowe.
Itha kukhala yopanda madzi nthawi yayitali chifukwa cha ma ring corrugations
The makina katundu wokhazikika kwambiri
Mkulu wamakina mphamvu
Kuchita bwino kwambiri kupindika
Kulumikizana ndikosavuta komanso kodalirika
Chingwe chosinthika kwambiri chimakhala ndi kanjira kakang'ono kopinda chifukwa chakuya kozungulira kozungulira

3, insulating medium
Rf coaxial chingwe sing'anga sichimangosewera gawo la kutchinjiriza, kutulutsa komaliza kumatsimikiziridwa makamaka pambuyo pa kutchinjiriza, kotero kusankha kwazinthu zapakatikati ndi kapangidwe kake ndikofunikira kwambiri.Zinthu zonse zofunika, monga kufooketsa, kutsekereza ndi kutayika kobwerera, zimadalira kwambiri kutchinjiriza.
Zofunikira kwambiri za insulation ndi:
Ochepa wachibale dielectric wosasintha komanso yaying'ono dielectric loss Angle factor kuwonetsetsa kuchepetsedwa pang'ono
Kapangidwe kake kamakhala kogwirizana kuti awonetsetse kuti yunifolomu imatayika komanso kutayika kwakukulu kwa echo
Khola makina katundu kuonetsetsa moyo wautali
chosalowa madzi
Kutchinjiriza thovu lalitali kumatha kukwaniritsa zofunikira zonse pamwambapa.Ndi luso lapamwamba la extrusion ndi jekeseni wa gasi ndi zipangizo zapadera, digiri ya thovu imatha kufika kupitirira 80%, kotero kuti ntchito yamagetsi ili pafupi ndi chingwe chotchinjiriza mpweya.Mu njira ya jakisoni wa gasi, nayitrogeni imalowetsedwa mwachindunji muzinthu zapakatikati mu extruder, yomwe imadziwikanso kuti njira yotulutsa thovu.Poyerekeza ndi njira yopangira thovu iyi, digiri yake yotulutsa thovu imatha kufika pafupifupi 50%, kutayika kwapakatikati kumakhala kokulirapo.Mapangidwe a thovu omwe amapezedwa ndi njira ya jakisoni wa gasi ndi ofanana, zomwe zikutanthauza kuti kutsekeka kwake ndi kofanana ndipo kutayika kwa echo ndikwambiri.
Zingwe zathu za RF zili ndi magetsi abwino kwambiri chifukwa cha kutayika pang'ono kwa dielectric Angle ndi thovu lalikulu la zida zotchingira.Makhalidwe a sing'anga yotulutsa thovu ndi ofunika kwambiri pama frequency apamwamba.Ndi mawonekedwe apadera a thovu awa omwe amatsimikizira kutsika kwambiri kwa chingwe pama frequency apamwamba.
Kusungunula kwapadera kwa MULTI-LAYER (INNER THIN LAYER - FOAMING wosanjikiza - wosanjikiza wakunja woonda) co-extrusion process imatha kupeza yunifolomu, mawonekedwe otsekedwa a thovu, okhala ndi zida zokhazikika zamakina, mphamvu yayikulu komanso kukana chinyezi chabwino ndi zina.Pofuna kuti chingwecho chikhalebe chogwira ntchito bwino chamagetsi m'malo onyowa, tidapanga mwapadera mtundu wa chingwe: chingwe chochepa kwambiri cha core PE chimawonjezedwa pamwamba pa chithovu chotchinjiriza.Mbali yakunja yopyapyalayi imalepheretsa kulowerera kwa chinyezi ndikuteteza magwiridwe antchito amagetsi a chingwe kuyambira pachiyambi cha kupanga.Kapangidwe kameneka ndi kofunikira makamaka pazingwe zotayikira zokhala ndi ma conductor akunja obowoka.Kuonjezera apo, kutsekemera kwazitsulo kumakulungidwa mwamphamvu mozungulira woyendetsa wamkati ndi wosanjikiza wochepa kwambiri wamkati, womwe umawonjezeranso kukhazikika kwa makina a chingwe.Komanso, wosanjikiza woonda uli ndi stabilizer yapadera, yomwe imatha kuonetsetsa kuti ikugwirizana ndi mkuwa ndikuwonetsetsa moyo wautali wautumiki wa chingwe chathu.Sankhani zinthu zoyenera zamkati zoonda, zimatha kupeza zinthu zogwira mtima, monga: kukana chinyezi, kumamatira komanso kukhazikika.
Kapangidwe kameneka kamitundu yambiri (wosanjikiza wamkati wocheperako - wosanjikiza wa thovu - wosanjikiza wakunja) amatha kukwaniritsa zinthu zonse zamagetsi zamagetsi komanso makina okhazikika, potero kumapangitsa moyo wautumiki wanthawi yayitali komanso kudalirika kwa zingwe zathu za RF.

4, mza
Chingwe chomwe chimagwiritsidwa ntchito kwambiri pazingwe zakunja ndi polyethylene yakuda yocheperako, yomwe imakhala ndi kachulukidwe kofanana ndi LDPE koma mphamvu yofananira ndi HDPE.M'malo mwake, nthawi zina, timakonda HDPE, yomwe imapereka zida zabwino zamakina komanso kukana kukangana, chemistry, chinyezi, ndi zina zachilengedwe.
Uv-proof HDPE yakuda imatha kupirira kupsinjika kwanyengo monga kutentha kwambiri komanso kuwala kwa UV.Pogogomezera chitetezo cha moto wa zingwe, utsi wochepa wa halogen wopanda lawi lamoto uyenera kugwiritsidwa ntchito.M'zingwe zowonongeka, pofuna kuchepetsa kufalikira kwa moto, tepi yowotcha moto ingagwiritsidwe ntchito pakati pa woyendetsa kunja ndi sheath kuti asunge wosanjikiza wotsekemera womwe umakhala wosavuta kusungunuka mu chingwe.

5, ntchito moto
Zingwe zotayikira nthawi zambiri zimayikidwa m'malo omwe ali ndi zofunikira zachitetezo chamoto.Chitetezo cha chingwe choyikidwa chikugwirizana ndi ntchito yamoto ya chingwe chokha ndi malo oyikapo.Kutentha, kachulukidwe ka utsi ndi kutulutsa mpweya wa halogen ndi zinthu zitatu zofunika zokhudzana ndi kuyatsa kwa chingwe.
Kugwiritsa ntchito lamba wodzipatula pamoto podutsa khoma kungalepheretse lawi kufalikira pa chingwe.Mayeso otsika kwambiri oyatsira moto ndi kuyesa kuyaka kwa chingwe chimodzi molingana ndi muyezo wa IEC332-1.Zingwe zonse zamkati ziyenera kukwaniritsa izi.Chofunikira chokhwima kwambiri ndicholingana ndi mayeso oyaka moto a IEC332-5.Pachiyeso ichi, zingwe zimatenthedwa molunjika m'mitolo, ndipo kutalika kwa kuyaka sikuloledwa kupitirira mtengo wotchulidwa.Chiwerengero cha zingwe chikugwirizana ndi mafotokozedwe a chingwe choyesera.Kuchuluka kwa utsi pakuwotcha chingwe kuyeneranso kuganiziridwa.Utsiwu umakhala ndi mawonekedwe otsika, fungo loyipa, komanso losavuta kuyambitsa zovuta za kupuma ndi mantha, kotero zimabweretsa zovuta kupulumutsa ndi ntchito yozimitsa moto.Kachulukidwe ka utsi wa zingwe zoyatsira amayesedwa molingana ndi mphamvu ya kufalikira kwa IEC 1034-1 ndi IEC 1034-2, ndipo mtengo wanthawi zonse wamapaipi amagetsi pazingwe zotsika utsi ndi wamkulu kuposa 60%.
PVC imatha kukwaniritsa zofunikira za IEC 332-1 ndi IEC 332-3.Ndichinthu chodziwika bwino komanso chachikhalidwe cha zingwe zamkati, koma sizoyenera ndipo zimatha kufa mosavuta poganizira chitetezo chamoto.Ikatenthedwa ndi kutentha kwina, PVC imatsitsa ndikutulutsa ma halogen acid.Pamene chingwe cha PVC chimatenthedwa, 1 kg ya PVC idzatulutsa 1 kg ya asidi ya halogen yokhala ndi 30% kuphatikizapo madzi.Chifukwa cha kuwononga komanso poizoni wa PVC, kufunikira kwa zingwe zopanda halogen kwakula kwambiri m'zaka zaposachedwa.Kuchuluka kwa halogen kumayesedwa molingana ndi IEC 754-1 muyezo.Ngati kuchuluka kwa halogen acid yotulutsidwa ndi zida zonse pakuyaka sikupitilira 5mg/g, chingwecho chimaonedwa kuti ndi chaulere cha halogen.
Zipangizo zamagetsi zamtundu wa Halogen-free flame retardant (HFFR) nthawi zambiri zimakhala zophatikiza ndi polyolefin zokhala ndi mineral fillers, monga aluminium hydroxide.Zodzaza izi zimayaka moto, ndikupanga aluminium oxide ndi nthunzi yamadzi, zomwe zimalepheretsa moto kuti usafalikire.Zopangira zoyaka za filler ndi polymer matrix sizowopsa, zopanda halogen komanso utsi wochepa.
Chitetezo chamoto pakuyika chingwe chimaphatikizapo izi:
Pamapeto a chingwe, zingwe zakunja ziyenera kulumikizidwa ndi zingwe zoteteza moto
Pewani kuyika m'zipinda ndi malo omwe ali ndi chiopsezo cha moto
Chotchinga chamoto chodutsa pakhoma chiyenera kuyaka kwa nthawi yayitali komanso kukhala ndi zotchingira kutentha komanso kuthina kwa mpweya
Chitetezo ndichofunikanso pakuyika