Sisebenzisa iikuki ukuphucula amava akho.Ngokuqhubeka nokukhangela le ndawo, uyavumelana nokusebenzisa kwethu iikuki.Ulwazi oluninzi oluvelaPTFE ioli itywina
Ukufumana amatywina asebenzayo omgangatho oguqukayo ibe ngumngeni omkhulu kumashumi eminyaka kunye neenkulungwane, kwaye kuye kwaba ngumngeni okhulayo ukusukela oko kwavela kunye nophuhliso lweemoto, iinqwelomoya, kunye noomatshini abantsonkothileyo.
Namhlanje, i-thermoplastics efana ne-polytetrafluoroethylene (PTFE) imilebe seals (ekwaziwa ngokuba yi-rotary shaft seals) iya isetyenziswa kakhulu.
Kweli nqaku, siza kujonga ngakumbi kubomi be-PTFE ejikelezayo yomlomo wetywina kunye nokuvela kwayo ekuhambeni kwexesha.
Yonke i "superhero" inembali yemvelaphi.Oku kuyasebenza nakwi-PTFE lip seals.Oovulindlela bamandulo babesebenzisa iintambo, isikhumba esikrwada, okanye amabhanti angqindilili njengezinye zetywina lokuqala okanye izinto zokutywina kwiiasi zamavili.Nangona kunjalo, la matywina athanda ukuvuza kwaye afuna ukulungiswa rhoqo.Uninzi lweenkampani zanamhlanje zokutywinwa kwe-elastomeric bezikhe zaba zii-tanneries.
Ngasekupheleni kwe-1920s, izitywina zokuqala zomlomo we-radial zenziwe ngesikhumba kunye neebhokisi zetsimbi ezinezibophelelo.Ngasekupheleni kwee-1940, ufele lwaqala ukutshintshwa yirabha eyenziweyo.Emva kweminyaka engama-40, abavelisi abaninzi baqala ukucinga kwakhona ngenkqubo yabo yonke yokutywina, bahlala bedibanisa umphezulu wokutywina kwindibano yokutywina kunye nokusebenzisa imilebe emininzi eneendawo ezithe nkqo nezithe tye.
I-Fluorocarbon ngomnye umenzi onjalo.Ngo-1982, iFluorocarbon yafumana i-SealComp, emva koko yayiyishishini elincinci losapho lokwenziwa kwemilebe eliseMichigan.Ukulandela ukufunyanwa, iNkampani yeFluorocarbon yafudusa i-SealComp kwisityalo eSouth Carolina ukuvelisa izitywina zetsimbi kumashishini enyukliya kunye ne-petrochemical.
Eli shishini litsha lokutywinwa komlomo ligxile kwiimpompo zoxinzelelo oluphezulu lwehydraulic kunye neenjini, iialternator zasemkhosini kunye nezinye iimveliso zorhwebo ezibandakanya idizili ilori ye-crankshaft seals kunye ne-thermostats.
Phakathi kwiminyaka yoo-1990, iNkampani yeFluorocarbon yatshintsha igama layo yaba yiFuron yaze yafunyanwa yiBD SEALS Solutions™ ngo-2001. Oku kongeza iFuron kwishishini le-BD SEALS Solutions esele lilomeleleyo lasentwasahlobo, elasekwa ngo-1955.
Ngo-1995, iteyiphu ye-elastomeric yongezwa kwidayamitha yangaphandle ye-BD SEALS Solutions™ itywina ngomlebe.Oku kwenziwa ukuze kupheliswe ukucinezelwa kwesinyithi ukuya kwintsimbi kunye nokuqinisekisa itywina eliqinileyo phakathi kwesitywina kunye nesitywina somzimba womthengi.Iimpawu ezongezelelweyo zongezwa kamva ukususwa kwetywina kunye nokumisa okusebenzayo ukubona itywina kunye nokuthintela ukufakwa okungalunganga.
Kukho izinto ezininzi ezifanayo, kodwa kwakhona ezininzi iiyantlukwano, phakathi kwe-elastomeric rubber lip seals kunye ne-BD SEALS PTFE lip seals.
Ngokwesakhiwo, omabini amatywina ayafana kakhulu kuba asebenzisa umzimba wesinyithi ocinezelwe kwitywina lomzimba omileyo kunye nesixhobo somlomo esinganxibiyo esikhuhla kwishaft ejikelezayo.Bakwasebenzisa indawo efanayo xa besetyenziswa.
I-Elastomeric lip seals yeyona nto ixhaphakileyo kwi-shaft seal kwimarike kwaye ibunjwe ngokuthe ngqo kwizindlu zentsimbi ukubonelela ngokuqina okufunekayo.Uninzi lwezitywini zemilebe yerabha ye-elastomeric zisebenzisa ispringi esandisiweyo njengendlela yokulayisha ukuqinisekisa ukutywinwa okuqinileyo.Ngokuqhelekileyo intwasahlobo ifumaneka ngaphaya kwendawo yokudibanisa phakathi kwetywina kunye ne-shaft, inika amandla afunekayo ukuba aphule ifilimu yeoli.
Kwiimeko ezininzi, i-PTFE imilebe yotywina ayisebenzisi intwasahlobo yokwandisa ukutywina.Kunoko, ezi zitywina ziphendula kuwo nawuphi na umthwalo osetyenziswa ekwalulweni komlomo wokutywina kunye ne-radius yokugoba eyenziwe ngumzimba wesinyithi.I-PTFE itywina ngomlebe zisebenzisa ipateni yoqhagamshelwano ebanzi phakathi komlebe kunye ne-shaft kune-elastomeric lip seals.I-PTFE imilebe yetywina nayo inomthwalo othile osezantsi, kodwa ube nendawo yoqhagamshelwano ebanzi.Uyilo lwabo lwalujolise ekunciphiseni amaxabiso okunxiba kunye notshintsho lwenziwa ukunciphisa umthwalo weyunithi, owaziwa ngokuba yiPV.
Ukusetyenziswa okukhethekileyo kwe-PTFE lip seals kukutywinwa kweeshafu ezijikelezayo, ngakumbi iishafu ezijikelezayo ngesantya esiphezulu.Xa iimeko zingumceli mngeni kwaye zingaphaya kwamandla azo, ziyindlela ebalaseleyo yokutywinwa komlomo werabha ye-elastomeric.
Ngokusisiseko, izitywina zomlomo ze-PTFE ziyilelwe ukuvala umsantsa phakathi kwezitywina zemilebe ze-elastomeric kunye nezitywina zobuso zikamatshini zekhabhoni.Banokusebenza kuxinzelelo oluphezulu kunye nezantya kunezitywina zomlomo ezininzi ze-elastomeric, zibenza zibe yeyona ndlela ibalaseleyo.
Ukusebenza kwabo akuchatshazelwa kakubi ziimeko ezingqongileyo ezinobushushu obugqithisileyo, imithombo yeendaba eyonakalisayo, isantya esiphezulu somphezulu, uxinzelelo oluphezulu okanye ukungabikho kokuthambisa.Umzekelo ogqwesileyo wezakhono eziphezulu ze-PTFE zicompressor zomoya zemizi-mveliso, ezilinganiswe ukuba zisebenze ngaphezu kweeyure ezingama-40,000 ngaphandle kokugcinwa.
Kukho ezinye iingcamango eziphosakeleyo malunga nokuveliswa kwe-PTFE lip seals.Izitywini zomlomo werabha ye-elastomeric zicinezela irabha ngokuthe ngqo kwizindlu zentsimbi.Umzimba wesinyithi unika ukuqina okufunekayo, kwaye i-elastomer ithatha indawo yokusebenza yesitywina.
Ngokwahlukileyo, izitywina zomlomo we-PTFE azinakuphoswa ngqo kwizindlu zentsimbi.Izinto ze-PTFE azingeni kwimeko yolwelo okanye kwimeko evumela ukuba izinto zihambe;Ke ngoko, izitywina zomlomo ze-PTFE zenziwa ngokucofa itywina, emva koko lidibanise kwizindlu zentsimbi, emva koko liyibambe ngoomatshini.
Xa ukhetha isisombululo esichanekileyo sokutywinwa kwezicelo ezijikelezayo, izinto ezibalulekileyo ezibandakanya isantya se-shaft, isantya esiphezulu, ukushisa okusebenzayo, ukutywina, kunye noxinzelelo lwenkqubo kufuneka ziqwalaselwe ngokucophelela.Zininzi ezinye iimeko zokusebenza ekufuneka uziqwalasele xa usenza isigqibo, kodwa ezi zidweliswe ngasentla zezona ziphambili.
Ngamalungelo kuza uxanduva olukhulu.Ngokuhamba kwexesha, ugqaliselo lwe-BD SEALS Solutions™ lutshintshelwe kwizicelo ezifuna i-PTFE lip seals enzima kakhulu.Enye yeenzuzo eziphambili zetywina kukwazi ukwenza kwiindawo ezinomngeni kwimizi-mveliso, iimoto kunye nezicelo ze-aerospace.
Banokusebenza kuxinzelelo oluphezulu kunye nesantya kwishafti ezijikelezayo kune-elastomeric lip seals, kwaye izibonelelo azipheli apho.Olunye uncedo lwe-PTFE lip seal ziquka:
BD SEALS Solutions™ Amatywina amabini aqhelekileyo omilebe zezi BD SEALS PTFE umzimba wesinyithi ojikelezayo ojikelezayo kunye ne-DynaLip polymer seals, zombini zitshintshana.Umahluko ophambili phakathi kwabo kuyilo lwabo.Izitywini zezindlu zesinyithi zisebenzisa i-sheet metal ukwenza indlu etywiniweyo kwaye emva koko kufakelwe umlebe wokutywina ukuze ubambe isitywina ngoomatshini.
Eyenziwe ekuqaleni kwe-1970s, i-BD SEALS izitywini zomlomo zenzelwe ukwenza kwiindawo ezinzima ukusuka kwi--53 ° C ukuya kwi-232 ° C, imimandla yeekhemikhali enzima, kunye neendawo ezomileyo kunye ne-abrasive.Dynamic PTFE amatywina ajikelezayo asetyenziswa kolu setyenziso lulandelayo:
Iimpawu zeDynaLip zangaphambili ze-BD SEALS ezijikelezayo malunga neminyaka elishumi.Ukudalwa kwabo kuye kwaba yimfuneko xa i-BD SEALS Solutions™ yaqala ukusebenza ngokuxuba kunye nokudibanisa izinto eziqhumayo kwizicelo zomkhosi.Izitywina ze-Metal-cased lip zibhekwa njengezingafanelekanga ngokupheleleyo kule njongo ngenxa yokuba kunokwenzeka ukuba zidibanise ne-shaft ejikelezayo ye-explosive edibeneyo.Yiyo loo nto iinjineli zoyilo ze-BD SEALS Solutions™ zenze itywina lomlomo elingenantsimbi ngelixa ligcina izibonelelo zalo eziphambili.
Xa usebenzisa izitywina zeDynaLip, imfuno yeengxenye zetsimbi isuswe ngokupheleleyo kuba isitywina sonke senziwe kwizinto ezifanayo zepolymer.Kwiimeko ezininzi, i-elastomericO-ringisetyenziswa phakathi kwedayimitha engaphandle yetywina kunye nebhondi yezindlu zokukhwelana.Amakhonkco e-O anikezela isitywina esiqinileyo esiqinileyo kunye nokuthintela ukujikeleza.Ngokwahlukileyo, i-BD SEALS i-lip seals ingenziwa kwizinto ezingaphezu kwezintathu ezahlukeneyo kwaye zifakwe kwizindlu zentsimbi.
Namhlanje, itywina loqobo leDynaLip livelise iinguqulelo ezininzi ezahlukeneyo ezikwalungele ukufakela intsimi njengoko azifuni zixhobo zikhethekileyo zofakelo kwaye zifanelekile kwizicelo ezifuna ukuba isitywina sisuswe ukuze kucocwe.Ngenxa yoyilo lwazo olulula, ezi zitywina zihlala zinoqoqosho ngakumbi.
I-BD SEAL PTFE itywina njani imilebe yomlomo, i-DynaLip polymer seals kunye nezinye izitywina zomlomo ezivela kwi-bd seals Solutions™ zitshintsha ubomi bethu bemihla ngemihla?
I-PTFE imilebe yotywino ibonelela ngeempawu zokutywina eziphezulu kunye nokukhuhlana okuphantsi kwindawo ezomileyo okanye ezirhabaxa.Zihlala zisetyenziswa kwizicelo ezinzima apho kufuneka isantya.
Imakethi yecompressor yomoya ngumzekelo omhle wendlela i-PTFE lip seals ethatha ngayo indawo ye-elastomeric kunye ne-carbon mechanical seals.I-BD SEALS Solutions™ yaqala ukusebenza kunye neenkampani ezininzi eziphambili zecompressor zomoya phakathi kwiminyaka yoo-1980, ithatha indawo yokutywinwa kwemilebe yerabha evuzayo kunye nokutywinwa kobuso bekhabhoni.
Uyilo lwantlandlolo lwalusekwe kutywino lwesithethe olunoxinzelelo oluphezulu, kodwa ekuhambeni kwexesha, njengoko imfuno iyanda kwaye kufuneka ukusebenza okuphezulu, itywina lenzelwe ukuba libe nokuvuza kwe-zero kunye nobomi benkonzo eyandisiweyo.
Itekhnoloji entsha iphuhliswe kubomi obungaphezulu kokutywinwa kabini ngelixa igcina ulawulo oluluqilima lokuvuza ngamaxesha onke.Ngenxa yoko, i-Omniseal Solutions™ PTFE lip seals ithathwa njengomgangatho weshishini, ibonelela ngeeyure ezingama-40,000 zenkonzo engahlawulelwayo.
I-PTFE itywina imilebe ibonelela ngolawulo oluphezulu lokuvuza kwaye iyakwazi ukusebenza ukusuka kwi-1000 ukuya kwi-6000 rpm kunye neentlobo ezahlukeneyo zokuthambisa kunye nexesha elide (iiyure ezingama-15,000), ukunciphisa amabango ewaranti.I-bd seals Solutions inikezela ngezitywina zeshaft kushishino lokucinezela izijija ezinodayamitha ukusuka kwi-0.500 ukuya kwi-intshizi ezingama-6000 (13 ukuya kwi-150 mm).
Abaxubi yenye indawo yoshishino apho ukwenziwa kwetywina kuxhaphake.Abathengi be-BD SEALS Solutions bakolu shishino bafuna izitywini ezinokusingatha ukuphambuka kweshaft kunye nokuphuma ukuya kuthi ga kwi-0.300 in.Ukusombulula le ngxaki kunye nokuphucula isantya sokusebenza, i-BD SEALS Solutions™ ibonelela ngoyilo lwe-patent edadayo yotywino lomlomo.
I-bd seals imilebe yotywino kulula ukuyifaka, ihlangabezana neemfuno ezingqongqo zokuvuza kwe-EPA, kwaye ziyi-oyile kunye ne-coolant ehambelanayo ukuze isetyenziswe kwiindawo ezivaliweyo kubo bonke ubomi bempompo.
Ukongeza, iiSolutions™ lip seals ziyilelwe iimeko zokutywinwa okuguquguqukayo, isantya esigqithisileyo, uxinzelelo kunye neengxaki zobushushu, kunye nezinye iinkqubo ezininzi.
Izitywina zabo zikwasetyenziswa kwizixhobo ezifuna izixhobo ezivunyiweyo ze-FDA zokusetyenziswa koomatshini abanje:
Zonke ezi zicelo zifuna ukuxhathisa kwentsimbi ephantsi kakhulu ukunciphisa ubushushu.Ukongeza ekuhlangabezaneni nemigangatho ye-FDA, amatywina kufuneka angabinamingxuma enokubangela ukuba i-jamming yezinto ivalwe, kwaye kufuneka ihambelane ne-acids, i-alkali kunye nee-arhente zokucoca.Kufuneka bamelane nokuhlanjwa koxinzelelo oluphezulu kwaye baphumelele uvavanyo lwe-IP69K.
I-bd seals Izisombululo zemilebe ye-Izisombululo zisetyenziswa kwiiyunithi zamandla ancedisayo (APU), ii-injini ze-injini ye-gas, iziqalisi, ii-alternator kunye neejeneretha, iimpompo zamafutha, ii-injini zoxinzelelo (i-RAT) kunye ne-flap actuators, enye yeemarike ezinkulu.
I-APU yenziwe yasebenza kwi-US Airways Flight 1549 ("Ummangaliso kwi-Hudson") ukunika amandla kwinqwelomoya ukuze ifike ngokukhuselekileyo.I-BD SEALS Izisombululo zemilebe kunye nezitywina zasentwasahlobo zifakwe kwinkqubo engundoqo yenqwelomoya, ethathwa njengebaluleke kakhulu ukubhabha kwaye kufuneka isebenze nge-100% xa ithunyelwa.
Kukho izizathu ezininzi zokuba kutheni abavelisi be-aerospace baxhomekeke kula matywina omlomo.I-BD SEALS izitywini zomlomo ezilungiselelwe ngokukodwa zibonelela ngokutywinwa okungqongqo kunye nokusebenza okuphuculweyo kunezitywina ezithelekisekayo ze-elastomeric.Zikwafuna indawo encinci kuneyomatshini wokutywinwa kwekhabhoni yoomatshini kwiishafu ze-turbine kunye neebhokisi zegiya zangaphandle.
Ziyakwazi ukumelana namaqondo obushushu ukusuka -65 ° F ukuya 350 ° F (-53 ° C ukuya 177 ° C) kunye noxinzelelo ukuya 25 psi (0 ukuya 1.7 bar), kunye nezantya emphezulu eqhelekileyo 2000 ukuya 4000 iinyawo ngomzuzu (10 ukuya 20 m/s).Ezinye ii-bd seals Solutions™ izisombululo kule ndawo zinokusebenza ngesantya esingaphezulu kwe-20,000 yeenyawo ngomzuzu, elilingana neemitha ezili-102 ngesekhondi.
Olunye urhwebo oluphambili ziinjini zokutywina zeenqwelomoya, apho izitywini zomlomo zomlomo zisetyenziswa kwiitywina zothumelo lwangaphandle ngabavelisi beenjini zenqwelomoya.bd seals Izisombululo zemilebe zokutywina zikwasetyenziswa kwiinjini zejethi ze-turbofan.Olu hlobo lwe-injini luxhotyiswe ngenkqubo yegiya eyahlula i-injini ye-injini kwi-compressor yoxinzelelo oluphantsi kunye ne-turbine, evumela imodyuli nganye ukuba isebenze ngesantya esiphezulu.
Ngaloo ndlela, banokubonelela ngokusebenza okwandisiweyo.Inqwelo-moya eqhelekileyo itshisa malunga nesiqingatha seelitha zamafutha ngekhilomitha nganye, yaye iinjini ezisebenza ngempumelelo kulindeleke ukuba zonge umyinge we-1,7 yezigidi zeerandi kwiindleko zokusebenza kwinqwelo-moya nganye ngonyaka.
Ukongeza ekuxhaseni amashishini ezorhwebo, i-PTFE i-lip seals nayo isetyenziselwa emkhosini, ngakumbi kwiSebe lezoKhuselo.Oku kubandakanya ukusetyenziswa kwiinqwelomoya zokulwa, abathwali beenqwelomoya kunye neehelikopta.
Iitywina zomlomo ze-PTFE zisetyenziswa kakhulu kwiinqwelomoya zomkhosi;Umzekelo, kwiifeni zokunyusa ezithe nkqo, iihelikopta zegearbox motor seals kunye nezitywina zazo ezilayishwe entwasahlobo zikwasetyenziselwa iindawo zokutywina zentloko yerotor, iiflaps kunye ne-slats, kunye nezixhobo eziphambili kwinkqubo yokuqhobosha esetyenziselwa ukubamba inqwelomoya.Yahlala phezu kwedekhi.Kubalulekile ukuqinisekisa ukuba izixhobo ezisetyenziselwa ezi njongo azisebenzi kakubi.
I-BD SEALS Izisombululo ze-Libe seals zilungele ezinye zezicelo ezicela umngeni ezifana ne-crankshafts, abasasazi, iimpompo zamafutha kunye ne-cam seals ezifumaneka kwishishini lomdyarho, apho ii-injini zendalo zihlala zityhalelwa kwimida yazo.
Uninzi lwamaqela e-NASCAR kunye neenjini ze-Indianapolis Motorsports zisebenzisa i-BD SEALS Solutions™ izitywini zomlomo.Phantse wonke umntu ophumeleleyo kunye nomgqibi e-Indianapolis ngo-2019 wasebenzisa imilebe yotywino kubuncinci i-crankshafts yabo yangaphambili nangasemva.bd seals Solutions™ ikwabonisa uyilo olunelungelo elilodwa lomenzi owenziwe ngokukodwa kwi-NASCAR ukuphelisa iingxaki eziqhelekileyo ezibangela ukusilela kwetywina lokuqhekeka kwe-PTFE.
Xa i-oyile ye-throttle crankshaft ye-injini yatsha yaphela ngesantya esiphezulu kunye noxinzelelo oluphezulu kugqatso lwakutsha nje e-Daytona Superspeedway, umenzi we-injini ophambili we-NASCAR wajikela kwi-bd seals Solutions™ lip seals.Isiphumo ibe luloyiso kumntu wonke: uBrad Keselowski kunye noNombolo 2 wePenske Ford baphumelele ugqatso besebenzisa iibd seals Solutions lip seals™.Ukwandisa ngakumbi lo mnyhadala uyimpumelelo, abane kwabahlanu abagqibileyo baqhube iimoto ezixhotyiswe ngeenjini ezikhokelayo ezithe zaxhamla kwezi zitywina zomlomo.
Esinye isicelo somdyarho se-BD SEALS Solutions™ lip seals sikwi-injection yepetroli engaphezulu.Ezi njini ziphantsi kweemeko ezinzima apho yonke into igoba, ishukuma kwaye ijije, ibangele uqhagamshelwano phakathi kwamalungu angafaneleki ukuba enzeka ngokuqhelekileyo.Ke ngoko, umndilili wobomi be-injector yamafutha engaphezulu ingaphantsi kwemizuzu emihlanu xa isetyenziswa kwizantya zomdyarho.
Ixesha lokuposa: Oct-10-2023