Ngaba ujongene namaqondo obushushu agqithisileyo, iikhemikhali, okanye ukungqubana okuphantsi? Funda indlela ezisebenza ngayo ii-seal ze-PTFE ezisebenza ngamandla entwasahlobo (ii-Variseals) kunye nesizathu sokuba zisisombululo esithembekileyo kwizicelo ezinzima kwi-aerospace, kwiimoto, nakwimveliso.
Intshayelelo: Imida yoBunjineli yeeMpawu ze-Elastomeric
Kwinjineli esebenza kakhulu, icandelo lokutywina lidla ngokuba likhonkco elibalulekileyo elimisela ukuthembeka kwenkqubo. Nangona izitywina zerabha eziqhelekileyo ezifana nee-O-rings zisebenza kakuhle kwiindawo ezininzi, zifikelela kwimida yazo xa zijongene namaqondo obushushu aphezulu, iikhemikhali ezirhabaxa, intshukumo enamandla, okanye iimfuno zokungqubana okuphantsi. Ezi ngxaki zifuna isisombululo esidibanisa iipropati zezinto eziphezulu zeepolymers eziphambili kunye namandla okutywina ahambelanayo, aguquguqukayo.
Le yindawo apho itywina elisebenzisa amandla entwasahlobo (elaziwa ngokuba yiVariseal okanye iSpring Seal). Eli nqaku linika ulwazi olunzulu ngendlela olu tywina olusebenza ngayo, iingxaki eziphambili oluzisombululayo, kunye nezinto ezibalulekileyo ekufuneka ziqwalaselwe kwiinjineli ezichaza itywina kwiindawo ezifuna amandla.
1. Umgaqo-siseko: Ukusebenzisana kweNtwasahlobo kunye nePolymer
Isitywina esisebenza ngamandla entwasahlobo sisixhobo esinezinto ezimbini esakhiwe ngokuchanekileyo:
Ijakethi yePolymer: Ngokwesiqhelo i-seal lip enomfanekiso we-U eyenziwe nge-PTFE (Teflon®) okanye ezinye iipolymers ezisebenza kakhulu ezifana ne-PEEK okanye i-UHMWPE. Le jakethi ibonelela nge-interface yokutywina ephambili, isebenzisa ukungangeni kweekhemikhali zesixhobo, uluhlu olubanzi lobushushu, kunye ne-coefficient ephantsi kakhulu yokungqubana.
Intwasahlobo Enika Amandla: Intwasahlobo ejikelezayo, edla ngokwenziwa ngentsimbi engagqwaliyo okanye ii-alloys ezisebenza kakhulu ezifana ne-Elgiloy®, egcinwe ngaphakathi kwe-U-channel yejakethi.
Indlela yokutywina isebenza kakuhle kakhulu:
1. Intwasahlobo inika amandla e-radial ahlala ehleli, amiselwe kwangaphambili, etyhala umlebe wokuvala wejakethi kumngxuma okanye kwi-housing (udonga lwe-gland).
2. Xa uxinzelelo lwenkqubo lusetyenziswa, lusebenza kwisitywini, lunyusa uxinzelelo lwemilebe kumphezulu wokudibana. Oku kudala isitywini esithembekileyo nesinamandla oxinzelelo.
3.Indima ebalulekileyo yentwasahlobo kukubuyisela ukuguga kwezinto (ukukrala) kunye nokugcina amandla okutywina nangona kukho ukungalungelelani okuncinci kwenkqubo, ukungaqhelekanga, okanye utshintsho olubangelwa bubushushu. Oku kuqinisekisa ukusebenza rhoqo kulo lonke ixesha lokusebenza kwesitywina.
2. Imingeni ephambili yokusetyenziswa kunye nendlela izitywina ezisebenza ngamandla entwasahlobo ezizisombulula ngayo
Le teknoloji ichazwe ukuba yoyise iingxaki ezithile zobunjineli ezibizayo:
Umngeni: Ubushushu Obugqithisileyo kunye nokuhamba kwe-PTFE ebandayo.
Imeko: Ukuvala ulwelo oluyi-cryogenic olufana ne-nitrogen engamanzi (-200°C) okanye ulwelo lwe-hydraulic olushushu kakhulu (>200°C).
Isisombululo: I-PTFE igcina iipropati zayo kumanqanaba aphezulu obushushu apho ii-elastomers zingaphumeleli khona. Nangona kunjalo, i-PTFE ithambekele "ekuhambeni okubandayo" - ukuguqulwa phantsi komthwalo ongaguqukiyo. Intwasahlobo yangaphakathi iyamelana nokuqhekeka, igcina uxinzelelo olufanelekileyo lwemilebe kwaye ithintela ukungaphumeleli kwetywina ngokuhamba kwexesha.
Umngeni: Iindawo ezinobungozi zeekhemikhali okanye iiplasma.
Imeko: Ukuvala izinyibilikisi eziqinileyo, ii-asidi, iziseko, okanye izixhobo zokucubungula i-semiconductor wafer ngeplasma ebolileyo.
Isisombululo: I-PTFE ayinayo ikhemikhali kakhulu, inika ukumelana okumangalisayo noluhlu olubanzi lwezixhobo ezihlaselayo. Oku kwenza izitywina ezisebenza ngentwasahlobo zilungele ukusetyenziswa kweekhemikhali, amayeza, kunye nokusetyenziswa kwe-semiconductor.
Umngeni: Usetyenziso Olutshintshayo Olune-Lubrication Ephantsi/Engenazo.
Imeko: Iishafti ezijikelezayo ezikhawulezayo kwizixhobo ezikumgangatho wokutya, amagumbi okucoca, okanye usetyenziso apho igrisi ingafunwayo.
Isisombululo: Ukuthambisa kwendalo kwe-PTFE kuvumela ezi zitywini ukuba zisebenze ngaphandle kokungqubana nokuguguleka okuncinci, nokuba zikwimeko eyomileyo okanye ezingathambisanga kakuhle. Oku kunciphisa ukusetyenziswa kwamandla kunye nokuveliswa kobushushu.
Umngeni: Ukuthembeka kwexesha elide kunye nokugcinwa okuncinci.
Imeko: Ivala kwiindawo ezingafikelelekiyo okanye kwiindawo apho ixesha lokungasebenzi elingacwangciswanga libiza kakhulu.
Isisombululo: Amandla angaguqukiyo entwasahlobo alungisa ukuguguleka kwemilebe, nto leyo eyenza ukuba isitywini “sizilungisele ngokwaso.” Oku kuthetha ukuba ixesha eliphakathi phakathi kokusilela liyanda kakhulu, nto leyo enciphisa iindleko zobunini.
3. Uyilo oluBalulekileyo kunye noKhetho lwezinto ezisetyenzisiweyo ukuze kusebenze kakuhle
Ukukhetha isitywina esifanelekileyo esinikwe amandla entwasahlobo akulula; kufuna ukuqwalaselwa ngononophelo izinto ezininzi:
Izinto zeJakethi:
I-PTFE eyi-Virgin: Umgangatho wokusetyenziswa kweekhemikhali ezininzi kunye nobushushu.
I-PTFE egcwalisiweyo (umz., eneGlasi, iCarbon, iGraphite, iBronze): Isetyenziselwa ukonyusa ukumelana nokuguguleka, ukunciphisa ukuhamba kokubanda, ukuphucula ukuhanjiswa kobushushu, okanye ukonyusa ukuqina.
Ezinye iiPolymers (PEEK, UHMWPE): Zikhethelwe iimfuno ezithile ezifana namandla aphezulu oomatshini (PEEK) okanye ukumelana nokukrala okuphezulu (UHMWPE).
Uhlobo lweNtwasahlobo kunye nezinto ezisetyenziswayo:
Amandla eNtwasahlobo: Iisprings ezikhaphukhaphu, eziphakathi, okanye ezithwala umthwalo onzima zikhethwa ngokusekwe kuxinzelelo, isantya, kunye nokungqubana okufunekayo.
Izinto zaseNtwasahlobo:
Intsimbi Engagqwaliyo (302, 316): Yokumelana nokugqwala ngokubanzi.
I-Elgiloy®/Hastelloy®: Yeyona ndawo inzima kakhulu efuna ukumelana nemingxuma, amaqondo obushushu aphezulu, kunye nolwelo oludlakadlaka olufana namanzi anetyuwa.
Ijiyometri yeSeal: Uyilo lwe-U-cup lunokulungiswa ukuze lujikeleze, luphinde luvalwe, okanye luvalwe ngendlela engashukumiyo. Izinto ezifana ne-engile yemilebe, ukuphakama kwesithende, kunye nobukhulu bejakethi zibalulekile kwaye zichongwa ngcono xa kuboniswana nomvelisi onolwazi.
4. Umahluko kwiMveliso: Kutheni ukuchaneka kubalulekile
Ukusebenza kwethiyori kwesitywini esisebenza ngentwasahlobo kufezekiswa kuphela ngokugqwesa kwemveliso. Iisprings ezingahambelaniyo okanye iijakethi ezingasebenzi kakuhle zikhokelela ekusileleni kwangethuba. Iintsika eziphambili zemveliso ziquka:
Ukulungiswa kweeJackets ngokuchanekileyo: Ijacket yePTFE kufuneka yenziwe ngomatshini ochanekileyo, ingapheleli nje ekukhutshweni, ukuze ifikelele ekunyamezeleni okuchanekileyo kunye nokugqitywa okuphezulu komphezulu wokuvala imilebe. Imilebe egudileyo nehambelanayo ibalulekile ekukhuhlaneni okuncinci kunye nokuvala okusebenzayo.
Ukungaguquguquki kweNtwasahlobo: Intwasahlobo kufuneka ijikeleziswe ngokweemfuno ezichanekileyo, ukuqinisekisa ukusasazwa kwamandla okufanayo kujikelezo lonke lwesitywina. Ukuguquguquka kwenani leentsimbi akuxoxiswana ngako.
Ulawulo Oluqinileyo Lomgangatho: Yonke imveliso kufuneka ihlolwe ngokwemilinganiselo kunye nokuqinisekiswa kwezinto. Ukulandeleka ukusuka kwizinto eziluhlaza ukuya kwimveliso egqityiweyo kuqinisekisa umgangatho kunye nokuthobela (umz., nge-ROHS, REACH).
Isiphelo: Ukucacisa isitywina esifanelekileyo sokuthembeka kokugqibela
Iiseal ezisebenza ngamandla entwasahlobo zisisisombululo esiqinisekisiweyo nesithembekileyo kakhulu kwizicelo apho ii-elastomers ezisemgangathweni zingaphumeleli khona. Ukukwazi kwazo ukusebenza kwiimeko ezinzima ngelixa zinciphisa iindleko zokugcina ixesha elide kuzenza zibe lutyalo-mali olukrelekrele lobunjineli.
Impumelelo ixhomekeke ekuqondeni iimfuno ezithile zesicelo kunye nokusebenzisana nomthengisi oqonda kakuhle izinto ezisisiseko zesayensi yezinto kunye nokuveliswa ngokuchanekileyo.
Ukulungele ukujongana nemingeni yakho yokutywina enzima kakhulu?
Qhagamshelana nathi ukuze sixoxe ngesicelo sakho.Iqela lethu lobuchwephesha linokubonelela ngeengcebiso ezisekelwe kwidatha, uyilo olulungiselelwe wena, kunye neesampuli ukuqinisekisa impumelelo yeprojekthi yakho.
Ixesha leposi: Disemba-18-2025