Iintambo ezikwaziyo ukumelana nomlilobhekisa kwiintambo ezinokugcina ukusebenza ngokukhuselekileyo ixesha elithile phantsi kwemeko yokuvutha komlilo.ilizwe lam umgangatho wesizwe we-GB12666.6 (ofana ne-IEC331) uhlula uvavanyo lokumelana nomlilo kumabakala amabini, A kunye no-B. Iqondo lokushisa lomlilo lebanga le-A liyi-950 ~ 1000 ℃, kunye nexesha eliqhubekayo lokubonelela ngomlilo ngu-90min.Iqondo lobushushu bebanga B yi-750 ~ 800 ℃, kwaye ixesha eliqhubekayo lokubonelela ngomlilo yimizuzu engama-90.min, ngexesha lonke lovavanyo, isampulu kufuneka imelane nexabiso lombane elilinganisiweyo elichazwe yimveliso.
Iintambo ezinokumelana nomlilo zisetyenziswa ngokubanzi kwizakhiwo eziphakamileyo, oololiwe bangaphantsi komhlaba, izitrato ezingaphantsi komhlaba, izikhululo zamandla amakhulu, amashishini abalulekileyo amashishini kunye nemigodi kunye nezinye iindawo ezinxulumene nokhuseleko lomlilo kunye nokulwa nomlilo kunye nokusindisa ubomi, njengemigca yokubonelela ngombane kunye nemigca yokulawula. zezibonelelo ezingxamisekileyo ezifana nezixhobo zokucima umlilo kunye nezibane zesikhokelo sikaxakeka.
Okwangoku, iingcingo ezininzi ezichasene nomlilo kunye neentambo zasekhaya nakwamanye amazwe zisebenzisa i-magnesium oxide mineral insulated cables kunye ne-mica tape-inxeba izintambo ezikwazi ukumelana nomlilo;phakathi kwabo, isakhiwo se-magnesium oxide i-mineral insulated cables iboniswe kumzobo.
I-Magnesium oxide mineral insulated cable luhlobo lwentambo ekwazi ukumelana nomlilo kunye nokusebenza okungcono.Yenziwe ngesiseko sobhedu, i-copper sheath, kunye ne-magnesium oxide insulating material.Ibizwa ngokuba yi-MI (minerl insulated cables) ngokufutshane.Umaleko ochasene nomlilo wentambo uhlanganiswe ngokupheleleyo zizinto ezingaphiliyo, ngelixa i-refractory layer ye-refractory ye-refractory-resistant cables yenziwe ngezinto ezingaphiliyo kunye nezinto eziphilayo eziqhelekileyo.Ngoko ke, ukusebenza kokumelana nomlilo kweentambo ze-MI kungcono kuneentambo eziqhelekileyo ezikwazi ukumelana nomlilo kwaye aziyi kubangela ukubola ngenxa yokutsha kunye nokubola.igesi.Iintambo ze-MI zineempawu ezilungileyo zokumelana nomlilo kwaye ziyakwazi ukusebenza kwiqondo lokushisa eliphezulu le-250 ° C ixesha elide.Kwangaxeshanye, zikwanobungqina bokudubula, ukuxhathisa okuqinileyo kwe-corrosion, umthamo omkhulu wokuthwala, ukuxhathisa kwimitha, amandla omatshini aphezulu, ubungakanani obuncinci, ubunzima obukhanyayo, ubomi obude, kunye nobungcali bokungatshayi.Nangona kunjalo, ixabiso liyabiza, inkqubo inzima, kwaye ukwakhiwa kunzima.Kwiindawo zokunkcenkceshela ioli, isakhiwo somthi esibalulekileyo izakhiwo zikawonkewonke, iindawo ezinobushushu obuphezulu kunye nezinye izihlandlo ezineemfuno zokumelana nomlilo ophezulu kunye noqoqosho olwamkelekileyo, olu hlobo lwentambo enokumelana nomlilo olufanelekileyo lunokusetyenziswa, kodwa lunokusetyenziswa kuphela kwi-Low voltage fire resistant. iintambo.
Intambo yokumelana nomlilo esongelwe ngayomica tapeinxeba ngokuphindaphindiweyo kunye neengqimba ezininzi ze-mica tape ngaphandle kwe-conductor ukunqanda ilangatye ekutshiseni, ngaloo ndlela ukwandisa ixesha lokusebenza ngokukhuselekileyo kunye nokugcina umgca ungavalwanga ixesha elithile.
i-magnesium oxide
Umgubo omhlophe we-amorphous.Ayinavumba, ayinancasa kwaye ayinayo ityhefu.Inokumelana nobushushu obuphezulu kunye nomgangatho ophantsi (ubushushu obuphezulu 2500 ℃, ubushushu obuphantsi -270 ℃), ukumelana nokugqwala, ukugquma, ukuguquguquka okuhle kwe-thermal kunye neempawu ezibonakalayo, ikristale engenambala kunye ne-transparent, indawo yokunyibilika 2852 ℃.I-Magnesium oxide ineempawu eziphezulu zokumelana nomlilo kunye ne-insulating, kwaye inendawo ephezulu yokunyibilika.Isetyenziselwa ukwenza i-magnesium oxide mineral insulated iintambo ezikwazi ukumelana nomlilo.
Iteyiphu yeMica
I-Mica yimathiriyeli yeminerali ene-flaky, ebonakaliswe ngokugquma, ukumelana nobushushu obuphezulu, ukukhazimla, iipropathi ezizinzileyo zomzimba kunye neekhemikhali, ukugquma ubushushu obuhle, ukuqina, ukuqina kunye nokungatsha, kwaye kuhluthwe kwiipropathi ezilastiki zamaphepha abonakalayo.
Iteyiphu yeMicayenziwe ngeflake mica powder ibe kwiphepha lemica, elincamathele kwilaphu legilasi yefiber encamathelayo.
Ilaphu leglasi elifakwe kwelinye icala lephepha le-mica libizwa ngokuthi "i-tape enecala elinye", kwaye enye ifakwe kumacala omabini ibizwa ngokuba "i-tape-sided tape".Ngethuba lenkqubo yokuvelisa, iileyile ezininzi zesakhiwo zihlanganiswe kunye, zomiswe kwi-oven, ziboshwe, kwaye zinqunyulwe kwiiteyipu zobukhulu obuhlukeneyo.
I-Mica tape, eyaziwa ngokuba yi-mica tape enganyangekiyo emlilweni, yenziwe ngu (umatshini we-mica tape).Luhlobo lwezixhobo zokugquma umlilo ezikwaziyo ukumelana nomlilo.Ngokusetyenziswa kwayo, inokwahlulwa ibe: i-mica tape yeemoto kunye ne-mica tape yeentambo.Ngokutsho kwesakhiwo, ihlukaniswe ibe: ibhanti elinamacala amabini, ibhande elilodwa, ibhande lesithathu kwelinye, ibhanti lefilimu ephindwe kabini, ibhanti yefilimu enye, njl. Ngokutsho kwe-mica, inokwahlulwa ibe: i-mica tape, i-phlogopite mica tape, kunye ne-muscovite tape.
(1) Ukusebenza kobushushu obuqhelekileyo: i-synthetic mica tape yeyona ilungileyo, ilandelwa yi tape ye-muscovite, kunye ne-phlogopite tape ihlwempuzekile.
(2) Ukusebenza kwe-insulation kwiqondo lokushisa eliphezulu: i-synthetic mica tape iyona nto ibhetele, ilandelwa yi-phlogopite mica tape, kunye ne-muscovite tape ihlwempu.
(3) Ukusebenza kokumelana nobushushu obuphezulu: I-synthetic mica tape, ayinamanzi ekristale, indawo yokunyibilika i-1375 ° C, eyona ndawo iphezulu yokumelana nobushushu, i-phlogopite ikhupha amanzi ayikristale ngaphezulu kwe-800 ° C, ilandelwa kukumelana nobushushu obuphezulu, i-muscovite ikhupha iikristale kwi-600. ° C Amanzi, ukumelana nobushushu obuphantsi.
Irabha ye-silicone ye-ceramic refractory
Ngenxa yokuthintelwa kweemeko zenkqubo, intambo enganyangekiyo emlilweni ehlanganiswe nge-mica tape ihlala ibangela iziphene kumalungu.Emva kokukhutshwa, i-mica tape iba brittle kwaye kulula ukuwa, okukhokelela kwisiphumo esibi sokumelana nomlilo.I-Insulation, kulula ukuwa xa ishukunyiswa, ngoko kunzima ukuqinisekisa unxibelelwano olukhuselekileyo nolucolekileyo lonxibelelwano lwexesha elide kunye namandla kwimeko yomlilo.
iMagnesia mineral insulated insulated fire cables kufuneka ingenise izixhobo ezikhethekileyo, ixabiso libiza kakhulu, kwaye utyalo-mali olukhulu;Ukongeza, i-sheath yangaphandle yale ntambo yobhedu yonke, ngoko ke iindleko zale mveliso nazo zenza le mveliso ibize kakhulu;plus Olu hlobo lwentambo ineemfuno ezikhethekileyo kwinkqubo yokuvelisa, ukusetyenzwa, ukuthuthwa, ukubeka umgca, ukufakwa kunye nokusetyenziswa, kwaye kunzima ukuthandwa nokuyisebenzisa ngomlinganiselo omkhulu, ngakumbi kwizakhiwo zoluntu.
Ixesha lokuposa: Mar-16-2023