Amasistimu kagesi esimanje ancike ekuxhumekeni phakathi kwamadivaysi ahlukene, amabhodi wesekethe, nama-peripherals. Kungakhathaliseki ukuthi amandla okudlulisa noma amasignali kagesi, izintambo ziwumgogodla wokuxhuma ngezintambo, okuwenza abe yingxenye ebalulekile yawo wonke amasistimu.
Kodwa-ke, ukubaluleka kwamajakhethi ekhebula (ungqimba lwangaphandle oluzungeza futhi oluvikela abaqhubi bangaphakathi) kuvame ukubukelwa phansi. Ukukhetha okufanelekile kwejakhethi yekhebula kuyisinqumo esibucayi ekwakhiweni kwekhebula nokukhiqizwa, ikakhulukazi uma kusetshenziswa ezindaweni ezinokhahlo. Ukuqonda ibhalansi phakathi kokusebenza kwemishini, ukumelana nemvelo, ukuguquguquka, izindleko, nokuthobela imithetho kuyisihluthulelo sokwenza ukukhetha okuhlakaniphile.
Enhliziyweni yebhantshi lekhebula kuyisihlangu esivikela futhi siqinisekise impilo nokuthembeka kwekhebula elingaphakathi. Lokhu kuvikela kuvikela umswakama, amakhemikhali, emisebeni ye-UV, kanye nengcindezi engokomzimba njengokuhuzuka nomthelela.
Impahla yamajakhethi ekhebula isukela kumapulasitiki alula kuye kumapholima athuthukile, ngalinye linezindawo ezihlukile ukuze kuhlangatshezwane nezidingo ezithile zemvelo nezomshini. Inqubo yokukhetha ibalulekile ngoba into efanele iqinisekisa ukusebenza kahle nokuvikelwa ngaphansi kwezimo zokusetshenziswa ezilindelekile.
Asikho isixazululo "sosayizi owodwa olingana bonke" samabhantshi ekhebula. Izinto ezikhethiwe zingahluka kakhulu kuye ngezimo ezihlukile zohlelo lokusebenza.
Kunezici ezimbalwa okufanele uzicabangele lapho ukhetha impahla yejakhethi yekhebula efanele.
1. Izimo Zemvelo
Ukumelana namakhemikhali kuyisici esibalulekile ekukhetheni amabhantshi ekhebula, njengoba izintambo zingase zihlangane namafutha, izinyibilikisi, ama-asidi, noma izisekelo, kuye ngokuthi zisebenza kanjani. Ijakhethi yekhebula ekhethwe kahle ingavimbela ukuwohloka noma ukugqwala kwezingxenye zayo ezingaphansi, ngaleyo ndlela igcine ubuqotho bekhebula esikhathini sokusebenza kwayo. Isibonelo, ezindaweni zezimboni lapho ukuchayeka kwamakhemikhali kuvame, kubalulekile ukukhetha izinto ezingamelana nezimo ezinzima kangaka. Lapha, amakhemikhali athile lapho ikhebula lizovezwa khona kufanele ahlolwe, njengoba lokhu kunquma isidingo sezinto ezikhethekile ezifana ne-fluoropolymers ukuze kuzuzwe ukumelana namakhemikhali okwedlulele.
Ukumelana nesimo sezulu nokukhanya kwelanga kungenye into ebalulekile, ikakhulukazi izintambo ezisetshenziswa ngaphandle. Ukuchayeka elangeni isikhathi eside kungenza izinto zendabuko zibe buthaka, kuholele ekushwabaneni nasekuhlulekeni ekugcineni. Izinto eziklanyelwe ukumelana nemisebe ye-UV ziqinisekisa ukuthi ikhebula lihlala lisebenza futhi liqinile ngisho nalapho kukhanya kakhulu ilanga. Kuzicelo ezinjalo, izinto ezisetshenziswayo ezifanele yi-CPE thermoplastics, CPE thermostats, noma ama-thermostats e-EPR. Ezinye izinto ezithuthukisiwe, ezifana ne-cross-linked polyethylene (I-XLPE), zenzelwe ukuhlinzeka ukumelana ne-UV okuthuthukisiwe, okuqinisekisa ubude bekhebula kuzinhlelo zokusebenza zangaphandle.
Ukwengeza, ezindaweni lapho ingozi yomlilo ikhathaza khona, ukukhetha ibhantshi lekhebula elinganqamuki ilangabi noma elizicishayo kungaba yisinqumo esisindisa ukuphila. Lezi zinto zenzelwe ukumisa ukusabalala kwamalangabi, zengeze isendlalelo esibalulekile sokuphepha ezinhlelweni ezibucayi. Ukuze ubambezeleke ilangabi, ukukhetha okuhle kakhulu kuhlanganisaI-PVCthermoplastics kanye ne-CPE thermoplastics. Izinto ezinjalo zinganciphisa ukusakazeka kwamalangabi ngenkathi zinciphisa ukukhishwa kwamagesi anobuthi ngesikhathi sokusha.
2. Izakhiwo Zemishini
Ukumelana nokuhuzuka, amandla okuthonya, namandla okuchoboza ebhantshi lekhebula kuthinta ngokuqondile ukuqina kwe-polyurethane. Lokhu kudingekile kakhulu ezinhlelweni zokusebenza lapho ikhebula linqamula indawo eyinselele noma lidinga ukuphathwa njalo. Kuzinhlelo zokusebenza ezihamba phambili, njengakumarobhothi noma emishinini eguqukayo, ukukhetha ibhantshi lekhebula elinezici zokuwakha ezisezingeni eliphezulu kungasiza ukugwema ukushintshwa nokugcinwa njalo. Izinto ezingcono kakhulu ezimelana nokugqokwa kwezembozo zejazi zihlanganisa i-polyurethane thermoplastics kanye ne-CPE thermoplastics.
3. Ukucatshangelwa kwezinga lokushisa
Ibanga lokushisa elisebenzayo lejazi lekhebula lingaba umehluko phakathi kwempumelelo noma ukwehluleka kwesistimu. Izinto ezingakwazi ukumelana nezinga lokushisa elisebenzayo lendawo ezihloselwe yona zingase zibe nzima uma kubanda noma ziwohloke lapho zichayeke emazingeni okushisa aphezulu. Lokhu konakala kungase kubeke engcupheni ubuqotho bekhebula futhi kubangele ukwehluleka kokufakwa kukagesi, okuholela ekuphazamisekeni kokusebenza noma izingozi zokuphepha.
Nakuba izintambo eziningi ezijwayelekile zingakalwa kufika ku-105°C, izinhlelo ezikhethekile ze-PVC zingase zidinge ukumelana namazinga okushisa aphezulu. Ezimbonini ezifana nowoyela negesi, izinhlelo zokusebenza ezikhethekile zidinga izinto ezibonakalayo, njengezinto zochungechunge lwe-ITT Cannon's SJS, ezingamelana namazinga okushisa afika ku-200°C. Kulawa mazinga okushisa aphezulu, kungase kudingeke kucatshangelwe izinto ezihlukahlukene, okuhlanganisa i-PVC ohlangothini lwe-thermoplastic kanye ne-CPE noma i-EPR noma i-CPR ohlangothini lwe-thermostat. Izinto ezingasebenza ezindaweni ezinjalo zingakwazi ukumelana namazinga okushisa aphezulu futhi zimelane nokuguga okushisayo, ziqinisekise ukusebenza kwekhebula ngokuhamba kwesikhathi.
Cabangela izindawo ezinokushisa okuphezulu, njengezinsimbi zokumba ogwini. Kulezi zindawo ezinomfutho ophezulu, izinga lokushisa eliphezulu, kuyadingeka ukukhetha impahla yejacket yekhebula engakwazi ukumelana namazinga okushisa aphezulu ngaphandle kokululaza noma ukwehluleka. Ekugcineni, ukukhetha okufanelekile kwejakhethi yekhebula kungaqinisekisa ukusebenza okuphephile nokuthembekile ngenkathi kunweba impilo yesisetshenziswa.
4. Isidingo Sokuvumelana nezimo
Ezinye izinhlelo zokusebenza zidinga izintambo ukuze zihlale ziguquguquka ngaphansi kokugoba okuphindaphindiwe nokusonteka. Lesi sidingo sokuvumelana nezimo asinciphisi isidingo sokuqina; ngakho-ke, izinto ezisetshenziswayo kufanele zikhethwe ngokucophelela ukulinganisa ngempumelelo lezi zidingo ezimbili. Kulezi zimo, izinto ezifana nama-thermoplastic elastomers (TPE) noma i-polyurethane (PUR) zithandwa ngenxa yokunwebeka kwazo nokuqina.
Amakhebuli asetshenziswa ezishintshayo zezimboni, ngokwesibonelo, kufanele avumelane nezimo ukuze amukele ukuhamba kwemishini efana namarobhothi. Amarobhothi anemeshi asetshenziselwa imisebenzi efana nokukha nokubeka izingxenye ayisibonelo esiyinhloko salesi sidingo. Umklamo wabo uvumela ukunyakaza okuhlukahlukene, ukubeka ukucindezeleka okuqhubekayo ezintanjeni, okudinga ukusetshenziswa kwezinto ezingamelana nokugoba nokusonta ngaphandle kokuyekethisa ukusebenza.
Ngemva kokucabangela izimo zemvelo, izakhiwo zemishini, izinga lokushisa, kanye nezidingo zokuguquguquka, kubalulekile futhi ukuqaphela ukuthi ububanzi obungaphandle bekhebula buzohluka ngento ngayinye. Ukuze uhlale unobungani bemvelo, ububanzi bekhebula kufanele buhlale ngaphakathi kwemingcele yokuvala i-backshell noma okunamathiselwe kwesixhumi.
Isikhathi sokuthumela: Aug-12-2024