Sisebenzisa amakhukhi ukuthuthukisa ulwazi lwakho.Ngokuqhubeka nokuphequlula leli sayithi, uyavumelana nokusebenzisa kwethu amakhukhi.Olunye ulwazi oluvelaI-PTFE oil seal
Ukuthola izimpawu ezisebenzayo zezindawo eziguquguqukayo kube yinselelo enkulu emashumini eminyaka ngisho namakhulu eminyaka, futhi kuye kwaba inselele kakhulu kusukela kwavela nokuthuthukiswa kwezimoto, izindiza, nemishini eyinkimbinkimbi.
Namuhla, ama-thermoplastics afana ne-polytetrafluoroethylene (PTFE) lip seal (owaziwa nangokuthi ama-rotary shaft seal) aya ngokuya asetshenziswa.
Kulesi sihloko, sizobhekisisa impilo ye-PTFE rotary lip seal esebenza kahle kakhulu kanye nokuvela kwayo ngokuhamba kwesikhathi.
Lonke “iqhawe elinamandla” linendaba yomsuka.Okufanayo kusebenza kuma-PTFE lip seal.Amaphayona asendulo ayesebenzisa izintambo, isikhumba esiluhlaza, noma amabhande awugqinsi njengezinye zezimpawu zokuqala noma izakhi zokuvala kuma-ekseli amasondo.Nokho, lezi zimvu zamanzi zivame ukuvuza futhi zidinga ukunakekelwa njalo.Iningi lezinkampani zanamuhla ze-elastomeric seal kwake kwaba yizindawo zokushukwa kwesikhumba.
Ngasekupheleni kwawo-1920, izigxivizo zokuqala zomlomo we-radial zenziwe ngamabhokisi esikhumba nensimbi anezinsimbi.Ngasekupheleni kwawo-1940, isikhumba saqala ukushintshwa yirabha yokwenziwa.Ngemva kweminyaka engu-40, abakhiqizi abaningi baqala ukucabanga kabusha uhlelo lwabo lonke lokuvala, ngokuvamile bahlanganisa indawo yokuvala endaweni yokuhlanganisa uphawu futhi basebenzise izindebe eziningi ezinamaphoyinti okuxhumana aqondile futhi avundlile.
I-Fluorocarbon ingenye yabakhiqizi abanjalo.Ngo-1982, i-Fluorocarbon yathola i-SealComp, ngaleso sikhathi eyayiyibhizinisi elincane lomndeni lokukhiqiza izindebe zomlomo elizinze eMichigan.Ngemva kokutholwa, i-Fluorocarbon Company yathuthela i-SealComp embonini eseNingizimu Carolina ukuze ikhiqize izimpawu zensimbi zezimboni zenuzi ne-petrochemical.
Leli bhizinisi elisha le-lip seal ligxile kakhulu kumaphampu nezinjini ezinomfutho ophezulu we-hydraulic, ama-alternator ezempi kanye neminye imikhiqizo yezohwebo ehlanganisa amaloli e-diesel crankshaft seal kanye nama-thermostats.
Maphakathi nawo-1990s, Inkampani ye-Fluorocarbon yashintsha igama layo laba i-Furon futhi yatholwa yi-BD SEALS Solutions™ ngo-2001. Lokhu kwengeza i-Furon ebhizinisini le-BD SEALS Solutions™ elisevele liqinile lasentwasahlobo, elasungulwa ngo-1955.
Ngo-1995, i-elastomeric tape yengezwa kububanzi obungaphandle be-BD SEALS Solutions™ lip seal.Lokhu kwenziwa ukuze kuqedwe ukucindezela kwensimbi-kuya-metal futhi kuqinisekiswe uphawu oluqinile phakathi kwesigxivizo kanye nesigxivizo somzimba wekhasimende.Izici ezengeziwe zengezwa kamuva ukuze zikhishwe uphawu nezitobhi ezisebenzayo ukuze kutholwe uphawu nokuvimbela ukufakwa okungalungile.
Kukhona ukufana okuningi, kodwa futhi kuningi umehluko, phakathi kwe-elastomeric rubber lip seal kanye ne-BD SEALS PTFE lip seal.
Ngokwesakhiwo, womabili ama-seal afana kakhulu ngokuthi asebenzisa umzimba wensimbi ocindezelwe kuphawu lomzimba omile kanye nezinto ezindebe ezingagugi ezigudla umphini ojikelezayo.Asebenzisa nendawo efanayo lapho esetshenziswa.
Izindebe zomlomo ze-elastomeric ziyi-shaft seal ezivame kakhulu emakethe futhi zibunjwa ngqo endlini yensimbi ukuze zinikeze ukuqina okudingekayo.Iningi le-elastomeric rubber lip seal lisebenzisa i-extension spring njengendlela yokulayisha ukuqinisekisa ukuvala okuqinile.Ngokuvamile intwasahlobo itholakala ngenhla nje kwendawo yokuxhumana phakathi kwe-seal kanye ne-shaft, inikeza amandla adingekayo ukuze aphule ifilimu yamafutha.
Ezimweni eziningi, i-PTFE lip seal ayisebenzisi isandiso sentwasahlobo ukuze sivale.Esikhundleni salokho, lezi zimpawu ziphendula kunoma yimuphi umthwalo osetshenziswa ekunwetshweni kodebe oluvalayo kanye ne-radius egobayo eyenziwe umzimba wensimbi.I-PTFE lip seal isebenzisa iphethini yokuxhumana ebanzi phakathi kodebe ne-shaft kune-elastomeric lip seal.I-PTFE lip seal nayo inomthwalo othize ophansi, kodwa ibe nendawo yokuxhumana ebanzi.Umklamo wabo wawuhloselwe ukunciphisa amazinga okugqoka futhi kwenziwa izinguquko ukuze kuncishiswe umthwalo weyunithi, owaziwa nangokuthi i-PV.
Uhlelo lokusebenza olukhethekile lwe-PTFE lip seal ukuvala ama-shafts ajikelezayo, ikakhulukazi ama-shaft ajikeleza ngesivinini esikhulu.Uma izimo ziyinselele futhi zingaphezu kwamandla azo, ziyindlela enhle kakhulu ye-elastomeric rubber lip seal.
Empeleni, izigxivizo zomlomo ze-PTFE zenzelwe ukuvala igebe phakathi kwezigxivizo zezindebe ze-elastomeric zendabuko kanye ne-mechanical carbon face seal.Zingasebenza ngengcindezi ephakeme nesivinini kunezindebe zomlomo eziningi ze-elastomeric, okuzenza zibe enye indlela enhle kakhulu.
Ukusebenza kwawo akuthintwa kabi izindawo ezinokhahlo ezinamazinga okushisa aphezulu, imidiya egqwalayo, isivinini esiphezulu, ukucindezela okukhulu noma ukuntuleka kokugcotshwa.Isibonelo esihle kakhulu samakhono aphezulu e-PTFE ama-compressor komoya ezimboni, alinganiselwe ukusebenza ngaphezu kwamahora angu-40,000 ngaphandle kokunakekelwa.
Kunemibono eyiphutha mayelana nokukhiqizwa kwe-PTFE lip seal.Izindebe zenjoloba ye-elastomeric zicindezela irabha ngokuqondile endaweni yensimbi.Umzimba wensimbi unikeza ukuqina okudingekayo, futhi i-elastomer ithatha ingxenye yokusebenza yophawu.
Ngokuphambene, izindebe ze-PTFE azikwazi ukuphonswa ngqo endlini yensimbi.Impahla ye-PTFE ayingeni esimweni esiwuketshezi noma esimweni esivumela okokusebenza ukuthi kugeleze;Ngakho-ke, i-PTFE lip seal yenziwa ngomshini wokufaka uphawu, bese ihlanganiswa ibe yindlu yensimbi, bese iyayibopha ngomshini.
Uma ukhetha isixazululo sophawu olunembile lwezinhlelo zokusebenza ezijikelezayo, izici ezibalulekile ezihlanganisa isivinini se-shaft, isivinini esiphezulu, izinga lokushisa lokusebenza, i-sealing medium, kanye nokucindezela kwesistimu kufanele kucatshangelwe ngokucophelela.Ziningi ezinye izimo zokusebenza okufanele uzicabangele lapho wenza isinqumo, kodwa lezi ezibalwe ngenhla yiyona eyinhloko.
Ngamalungelo kuza umthwalo omkhulu.Ngokuhamba kwesikhathi, ukugxila kwe-BD SEALS Solutions™ kushintshele ezinhlelweni zokusebenza ezidinga izigxivizo zomlomo ze-PTFE.Enye yezinzuzo ezibalulekile zalolu phawu amandla ayo okusebenza ezindaweni eziyinselele ezimbonini, ezezimoto kanye nezinhlelo ze-aerospace.
Angasebenza ngengcindezi ephakeme kanye nesivinini kumashafu ajikelezayo kune-elastomeric lip seal, futhi izinzuzo azigcini lapho.Ezinye izinzuzo ze-PTFE lip seal zihlanganisa:
I-BD SEALS Solutions™ Izimpawu ezimbili ezivamile zomlomo yi-BD SEALS PTFE umzimba wensimbi ozungezisayo wezindebe zomlomo kanye ne-DynaLip polymer seal, zombili ezishintshashintshayo.Umehluko omkhulu phakathi kwabo ukuklama kwabo.Izigxivizo zezindlu zensimbi zisebenzisa insimbi yeshidi ukwakha indlu evalekile bese zifaka udebe oluvalayo ukuze ziqinise uphawu.
Eqanjwe ekuqaleni kwawo-1970, ama-BD SEALS lip seal aklanyelwe ukusebenza ezindaweni ezinzima kusukela ku-53°C kuya ku-232°C, izindawo zamakhemikhali ezinokhahlo, kanye nezindawo ezomile neziqhumayo.I-Dynamic PTFE rotary seals isetshenziswa kulezi zicelo ezilandelayo:
Izimpawu ze-DynaLip zandulela ama-BD SEALS ama-rotary seal cishe iminyaka eyishumi.Ukudalwa kwazo kudingeke lapho i-BD SEALS Solutions™ iqala ukusebenza ekuxubeni nasekuhlanganiseni izinto eziqhumayo ezisetshenziswa ezempi.Izindebe zomlomo we-Metal-cased zibhekwa njengezingafaneleki ngokuphelele le njongo ngenxa yokuthi kungenzeka ukuthi zihlangane ne-shaft ejikelezayo ye-explosive exutshwe.Yingakho onjiniyela abaklami be-BD SEALS Solutions™ bathuthukise i-lip seal engenayo insimbi kuyilapho besalondoloza izinzuzo zayo ezibalulekile.
Uma usebenzisa izimpawu ze-DynaLip, isidingo sezingxenye zensimbi sisuswa ngokuphelele ngoba uphawu lonke lwenziwa ngento efanayo ye-polymer.Ezimweni eziningi, i-elastomericO-ringisetshenziswa phakathi kwe-diameter yangaphandle ye-seal kanye ne-bore yezindlu zokukhwelana.Izindandatho ze-O zinikeza uphawu oluqinile oluqinile futhi zivimbela ukujikeleza.Ngokuphambene, ama-BD SEALS lip seal angenziwa ngezinto ezingaphezu kwezintathu ezahlukene futhi avalelwe endlini yensimbi.
Namuhla, uphawu lokuqala lwe-DynaLip selwenze izinguqulo eziningi ezihlukene ezilungele ukufakwa endaweni njengoba zingadingi amathuluzi akhethekile okufakwa futhi zilungele izinhlelo zokusebenza ezidinga ukuthi uphawu lususwe ukuze luhlanzwe.Ngenxa yokuklama kwazo okulula, lezi zimpawu zivame ukonga kakhulu.
Ingabe i-BD SEAL PTFE lip seal, DynaLip polymer seals nezinye izindebe zomlomo ezivela ku-bd seals Solutions™ zishintsha kanjani izimpilo zethu zansuku zonke?
I-PTFE lip seal ihlinzeka ngezakhiwo zokuvala ezisezingeni eliphezulu kanye nokungqubuzana okuphansi ezindaweni ezomile noma ezilumayo.Zivame ukusetshenziselwa izinhlelo zokusebenza eziyinkimbinkimbi lapho isivinini sidingeka khona.
Imakethe ye-compressor yomoya iyisibonelo esihle sokuthi i-PTFE lip seal ithatha kanjani indawo ye-elastomeric kanye ne-carbon mechanical seal.I-BD SEALS Solutions™ yaqala ukusebenza nezinkampani eziningi ezinkulu ze-compressor air maphakathi nawo-1980, ishintsha izindebe zezindebe zenjoloba ezivuzayo kanye ne-carbon face seal.
Idizayini yasekuqaleni yayisekelwe esicinisweni somlomo esinengcindezi ephezulu, kodwa ngokuhamba kwesikhathi, njengoba isidingo sikhula futhi kudingeka ukusebenza okuphezulu, uphawu lwaklanyelwe ukuba lube neqanda elivuzayo nempilo yesevisi eyandisiwe.
Ubuchwepheshe obusha buthuthukisiwe ukuze bube nokuphila okungaphezu kokuphindwe kabili ngenkathi kugcinwa ukulawula ukuvuza okuqinile ngaso sonke isikhathi.Ngenxa yalokho, i-Omniseal Solutions™ PTFE lip seal ibhekwa njengezinga lemboni, ihlinzeka ngamahora angaphezu kuka-40,000 esevisi yamahhala.
I-PTFE lip seal ihlinzeka ngokulawula ukuvuza okuphakeme futhi iyakwazi ukusebenza ukusuka ku-1000 kuya ku-6000 rpm ngezithako ezihlukahlukene kanye nesikhathi eside (amahora angu-15,000), ukunciphisa izimangalo zewaranti.I-bd seals Solutions inikezela ngezigxivizo ze-shaft zemboni yokuminyanisa ngezikulufo ezinobubanzi obusuka ku-0.500 kuya ku-6000 amayintshi (13 kuya ku-150 mm).
Izixube zingenye indawo yezimboni lapho ukwenziwa ngokwezifiso kwezimpawu kusakazeke kabanzi.Amakhasimende e-BD SEALS Solutions™ kulo mkhakha adinga ama-seal akwazi ukuphatha ukuchezuka kwe-shaft futhi aphume aze afike ku-0.300 in. (7.62 mm), okuyinani elibalulekile lokuphuma kwe-shaft enamandla.Ukuze kuxazululwe le nkinga futhi kuthuthukiswe isivinini sokusebenza, i-BD SEALS Solutions inikezela ngomklamo onelungelo lobunikazi elintantayo lokuvalwa kwezindebe.
I-bd seals lip seal kulula ukuyifaka, ihlangabezana nezidingo eziqinile zokuvuza kwe-EPA, futhi iwuwoyela nokupholisa okuhambisanayo ukuze kusetshenziswe ezindaweni ezivalekile kuyo yonke impilo yephampu.
Ngaphezu kwalokho, iSolutions™ lip seal yakhelwe izimo zokuvala ezinamandla, isivinini esidlulele, izinkinga zokucindezela nezinga lokushisa, nezinye izinhlelo zokusebenza eziningi.
Izigxivizo zabo zibuye zisetshenziswe emishinini edinga izinto ezigunyazwe yi-FDA ukuze zisetshenziswe emishini efana nale:
Zonke lezi zinhlelo zokusebenza zidinga ukumelana ne-seal ephansi kakhulu ukuze kuncishiswe izinga lokushisa.Ngokungeziwe ekuhlangabezaneni nezindinganiso ze-FDA, izimpawu kufanele zingabi nazimbotshana ezingase zibangele ukuminyana kwezinto ukuthi zivalwe, futhi kufanele zihambisane nama-asidi, ama-alkali nama-ejenti okuhlanza.Kufanele futhi zimelane nokuwashwa komfutho ophezulu futhi ziphumelele ukuhlolwa kwe-IP69K.
I-bd seals Solutions™ lip seals isetshenziswa kumayunithi wamandla asizayo (APU), izinjini ze-turbine yegesi, iziqalisi, ama-alternator namajeneretha, amaphampu kaphethiloli, izinjini zokucindezela (RAT) nama-flap actuators, enye yezimakethe ezinkulu.
I-APU yenziwe yasebenza ku-US Airways Flight 1549 (“Miracle on the Hudson”) ukuze inikeze amandla endizeni ukuze ihlale ngokuphephile.I-BD SEALS Solutions™ izindebe zomlomo kanye ne-spring seal zifakiwe ohlelweni oluyinhloko lwale ndiza, oluthathwa njengolubalulekile ekundizani futhi kufanele lusebenze ngo-100% lapho lusatshalaliswa.
Kunezizathu eziningi zokuthi kungani abakhiqizi be-aerospace bathembele kulezi zimpawu zomlomo.Izindebe zomlomo eziklanywe ngokukhethekile ze-BD SEALS zinikeza uphawu oluqinile nokusebenza okuthuthukisiwe kunezimpawu ze-elastomeric eziqhathaniswayo.Futhi zidinga isikhala esincane kune-mechanical carbon mechanical seals kuma-turbine shafts nama-gearbox angaphandle.
Angakwazi ukumelana namazinga okushisa asuka ku -65°F kuya ku-350°F (-53°C kuya ku-177°C) kanye nezingcindezi ezifika ku-25 psi (0 kuya ku-1.7 bar), anesivinini esivamile sobuso esingamamitha angu-2000 kuya kwangu-4000 ngomzuzu (10 kuya ku-1. 20 m/s).Ezinye izixazululo ze-bd seals Solutions™ kule ndawo zingasebenza ngesivinini esingaphezu kwamafithi angu-20,000 ngomzuzu, okulingana namamitha angu-102 ngomzuzwana.
Enye imakethe enkulu izigxivizo zenjini yezindiza, lapho kusetshenziswa khona ama-lip seal abakhiqizi abakhulu benjini yezindiza.I-bd seals Solutions™ lip seals nayo isetshenziswa ezinjinini zejethi ze-turbofan.Lolu hlobo lwenjini lufakwe isistimu yegiya ehlukanisa ifeni yenjini ne-compressor ene-low pressure kanye ne-turbine, okuvumela imojula ngayinye ukuthi isebenze ngesivinini esiphezulu.
Ngakho, banganikeza ukusebenza kahle okwandisiwe.Indiza evamile ishisa cishe ingxenye yelitha likaphethiloli ngemayela, futhi izinjini ezisebenza kahle kakhudlwana kulindeleke ukuthi zonge isilinganiso samaRandi ayizigidi ezingu-1,7 ezindlekweni zokusebenza zendiza ngayinye ngonyaka.
Ngaphezu kokusekela izimboni zezentengiselwano, i-PTFE lip seal nayo isetshenziswa kwezempi, ikakhulukazi uMnyango Wezokuvikela.Lokhu kuhlanganisa ukusetshenziswa ezindizeni zokulwa, ezithwala izindiza kanye nezindiza ezinophephela emhlane.
PTFE izindebe seals kabanzi ezindizeni zempi;Isibonelo, kubalandeli bokuphakamisa okuqondile, ama-gearbox motor seal kanye nezimpawu zabo ezilayishwe entwasahlobo nazo zisetshenziselwa izingxenye ze-rotor head seal, ama-flap nama-slats, kanye nemishini ebalulekile ohlelweni lokubhuleka olusetshenziselwa ukubamba indiza.Yahlala phezu kompheme.Kubalulekile ukuqinisekisa ukuthi okokusebenza okusetshenziselwa lezi zinhloso akusebenzi kabi.
I-BD SEALS Solutions Solutions lip seal ifanele ezinye zezinhlelo zokusebenza eziyinselele kakhulu njengama-crankshaft, abasabalalisi, amaphampu kaphethiloli kanye nama-cam seal atholakala embonini yomjaho, lapho ngokwemvelo izinjini zivame ukuphushwa emikhawulweni yazo.
Iningi lamaqembu e-NASCAR kanye nezinjini ze-Indianapolis Motorsports zisebenzisa i-BD SEALS Solutions™ lip seal.Cishe wonke umuntu ophumelele iziqu e-Indianapolis ngo-2019 wasebenzisa izindebe zomlomo okungenani kuma-crankshafts abo angaphambili nangemuva.I-bd seals Solutions™ iphinde ibe nomklamo onelungelo lobunikazi owakhelwe ngqo i-NASCAR ukuze kuqedwe izinkinga ezivamile ezibangela ukwehluleka kophawu lwe-PTFE.
Ngenkathi i-throttle crankshaft oil seal yenjini isha ngesivinini esiphezulu kanye nengcindezi ephezulu phakathi nomjaho wakamuva e-Daytona Superspeedway, umkhiqizi wenjini ohamba phambili we-NASCAR waphendukela ku-bd seals Solutions™ lip seal.Umphumela ube ukuwina kwawo wonke umuntu: U-Brad Keselowski kanye noNo. 2 Penske Ford bawine umjaho besebenzisa ama-bd seals Solutions™ lip seal.Ukuze kuqhutshekwe nokuthuthukisa lo mcimbi oyimpumelelo, abane kwabahlanu abaphume phambili bashayele izimoto ezihlome ngezinjini ezihamba phambili nazo ezihlomule ngala ma-lip seal.
Olunye uhlelo lomjaho lwe-BD SEALS Solutions™ lip seal lukuma-injection kaphethiloli angaphezulu.Lezi zinjini zingaphansi kwezimo ezimbi kakhulu lapho yonke ingxenye igoba, inyakaze futhi inyakaze, okubangela ukuthintana phakathi kwezingxenye okungafanele zenzeke ngokujwayelekile.Ngakho-ke, isilinganiso sesikhathi sokuphila somjovo wesibaseli ongaphezulu singaphansi kwemizuzu emihlanu uma sisetshenziswa ngesivinini somjaho.
Isikhathi sokuthumela: Oct-10-2023