Indlela I-Cartridge Mechanical Seal Ethuthukisa Ngayo Ukuthembeka Kwephampu

Isingeniso

Ukuthembeka kwephampu kuvame ukuncika eqoqweni elincane lezingxenye, kanti uphawu lomshini lungenye yezinto ezibaluleke kakhulu. Lapho izivalo kunzima ukuzifaka, zizwela ekuqondeni, noma zithambekele ekuvuzeni, izindleko zokungasebenzi ezingahleliwe kanye nokugcinwa kwazo zikhuphuka ngokushesha. Uphawu lomshini lwekhatriji luthuthukisa leli phuzu elibuthakathaka ngokuhlanganisa izinto zokuvala zibe yiyunithi esethiwe ngaphambilini enciphisa iphutha lokufaka, izinzise ukulayisha ubuso besivalo, futhi isekele ukusebenza okuqhubekayo. Lesi sihloko sichaza ukuthi lo mklamo uthuthukisa kanjani ukulawulwa kokuvuza, wandisa impilo yesevisi, futhi usize amaphampu asebenze isikhathi eside phakathi kokwehluleka, okunikeza abafundi umbono ocacile wokuthi kungani izivalo zekhatriji zisetshenziswa kabanzi ezinhlelweni zokuphatha uketshezi ezidingayo.

Kungani Izimbozo Zemishini Ye-Cartridge Zithuthukisa Ukuthembeka Kwephampu

Ushintsho oluvela ekupakisheni okujwayelekile kanye nezimpawu zezingxenye luyeizimpawu ze-cartridge mechanical [https://www.victor-seals.com]s imelela ushintsho oluyisisekelo ekuthembekeni kokuphathwa koketshezi. Ngokuhlanganisa zonke izinto ezibalulekile zokuvala zibe yiyunithi eyodwa, esethiwe ngaphambilini, izikhungo zezimboni zivame ukwandisa isikhathi esimaphakathi phakathi kokwehluleka (i-MTBF) kusukela esilinganisweni sezinyanga ezingu-12 kuya ezinyangeni ezingaphezu kuka-36 ezicelweni ezidinga kakhulu.

Ukuthembeka kwamaphampu e-centrifugal kuhlobene kakhulu nobuqotho besivalo somshini. Uma isivalo sehluleka, iphampu kumele isuswe, okuholela ekuphazamisekeni kwenqubo, izingozi zemvelo, kanye nokungenelela kokulungisa okubizayo. Izivalo ze-cartridge zibhekana nezimbangela eziyinhloko zalokhu kwehluleka ngokuklama iziguquguquko ezihambisana nokuhlanganiswa nokufakwa ngesandla.

Ukulawula ukuvuza kanye nokunemba kokufakwa

Umshayeli oyinhloko wokuthembeka kwesivalo sekhatriji ukususa ngokuphelele iziguquguquko zokufakwa. Izivalo zezingxenye zidinga ochwepheshe ukubala ngesandla nokusetha ukucindezela kwentwasahlobo kushafu ngokulinganisa ubude bokusebenza obubalulekile. Le nqubo yesandla ivame kakhulu ukwenza amaphutha omuntu, okuvame ukuholela ekulayisheni kobuso okungalingani noma ukuguguleka ngokweqile.

Izivalo zekhatriji zifika zivela kumkhiqizi zihlanganiswe ngokuphelele, kanye nokuqina kwentwasahlobo okusethwe kusengaphambili kusetshenziswa iziqeshana zokusetha ezisuswayo. Lo mklamo ohlanganisiwe uqinisekisa ukulayisha ubuso okuhle kakhulu kusukela ngesikhathi sokufakwa futhi uvumela kalula ukubekezelelana okujwayelekile komgodi okungaphansi kuka-0.05 mm (0.002 amayintshi). Ngokususa isidingo sokulinganisa ngokunemba phansi kwesitolo, izikhungo zinganciphisa ukwehluleka kokuvalwa okubangelwa ukufakwa ngamaphesenti afinyelela ku-75, okunciphise ngempumelelo ingozi yokuvuza okusheshayo kokuqala.

Ukunciphisa isikhathi sokungasebenzi kanye nomzamo wokulungisa

Isikhathi sokungasebenzi kwezimboni sinesijeziso sezimali esinzima, esivame ukwedlula amashumi ezinkulungwane zamaRandi ngehora ezimbonini zenqubo eqhubekayo. Ukuthuthukela ezivalweni zekhatriji kunciphisa kakhulu i-Mean Time To Repair (MTTR) yezimpahla zokupompa ezibalulekile.

Ukushintsha isivalo sezinto zendabuko kungadla amahora angu-4 kuya kwangu-6 omsebenzi onekhono, ikakhulukazi ngenxa yokuphathwa ngokucophelela okudingekayo kobuso obujikelezayo ngabanye, izihlalo ezimile, kanye nama-O-rings ashukumisayo. Ngokuphambene nalokho, isivalo sekhatriji ngokuvamile singafakwa emshafini, siboshwe endongeni, futhi siboshwe ngaphansi kwemizuzu engama-90. Lo mzamo wokulungisa olungiselelwe kahle awugcini nje ngokubuyisela iphampu ekusesheni ngokushesha kodwa futhi unciphisa ukuthembela kwesikhungo ezintweni ezikhethekile kakhulu.ochwepheshe bezimpawu zemishini.

I-Cartridge vs Izimpawu Zomshini Zezingxenye

Ukuqonda umehluko wesakhiwo phakathi kwe-cartridge kanye ne-component mechanical seals kubalulekile konjiniyela bezitshalo abafuna ukuthuthukisa izindleko zomjikelezo wokuphila kwemishini. Umehluko oyisisekelo ulele endleleni izinto zokuvala ezihlangana ngayo nomgodi wepompo kanye nebhokisi lokugcwala.

Nakuba zombili lezi zakhiwo zithembele kufilimu yoketshezi oluncane kakhulu phakathi kobuso obujikelezayo nobungaguquki ukuvimbela ukuvuza, ukwenziwa kwalesi simiso ngomshini kunquma ubuthakathaka be-seal ekucindezelekeni kokusebenza.

Izici zokuklama ezithuthukisa ukuthembeka

Izivalo ze-cartridge zihlanganisa isivikelo somgodi, ubuso besivalo, iziphethu ezinika amandla, kanye ne-gland plate zibe yinhlanganisela eyodwa ehlangene, evivinywe efektri. Lokhu kuhlanganiswa kuvimbela ubuso besivalo obunamathelisiwe kakhulu ukuthi buvezwe enhlabathini, emafutheni, noma ekulimaleni ngesikhathi sokuthuthwa nokuphathwa.

Ngaphezu kwalokho, imiklamo ye-cartridge ethuthukisiwe ivame ukusebenzisa iziphethu ezimile kuneziphethu ezijikelezayo. Iziphethu ezimile zihlukaniswe noketshezi lwenqubo, zivimbela ukuthi zingavaleki ezinhlelweni eziqinile noma ezicwebezelayo. Lokhu kukhetha kokuklama kugcina amandla okuvala ahambisanayo angaba ngu-15 kuya ku-25 psi ebusweni besivalo, okuqinisekisa ukusebenza okuzinzile ngisho nangaphansi kwezimo zokucindezela ezishintshashintshayo.

Umehluko engcupheni yokuvuza kanye nokuzwela kokuqondanisa

Izivalo zezingxenye zizwela kakhulu ekunyakazeni kwe-axial shaft kanye nokwanda kokushisa. Noma yikuphi ukushintsha kwe-shaft kungashintsha kalula ubude bokusebenza obubalulekile, okuholela ekuhlukaneni kobuso (ukuvuza okubi kakhulu) noma ukucindezelwa ngokweqile (ukukhiqizwa kokushisa okusheshayo kanye nokubhujiswa kobuso). Imiklamo ye-cartridge ibekezelela ngokwemvelo ukunyakaza kwe-shaft okujwayelekile, ngokuvamile ivumela ukunyakaza kwe-axial okufika ku-0.13 mm (0.005 inches) ngaphandle kokuphazamisa ukuxhumana kobuso okuqondile.

Izici Zobuchwepheshe Ezithinta Ukusebenza Kwesivalo

Isikhathi sokusebenza kwesivalo somshini silawulwa kakhulu yindawo yokusebenza kanye nokucaciswa okunembile kwezingxenye zaso zangaphakathi. Ukukhetha amapharamitha obuchwepheshe afanele akunakuxoxiswana ngakho ukuze kufezwe ukuthembeka okuphezulu nokuvimbela ukwehluleka okubi kakhulu ngaphambi kwesikhathi.

Abasebenzi kumele bahlole ngokucophelela izakhiwo zamakhemikhali nezomzimba zoketshezi olupompiwe, njengoba lezi ziguquguquko zilawula konke kusukela ekusetshenzisweni kwensimbi ye-gland kuya kuma-elastomer athile asetshenziselwa ukuvala okwesibili.

Izinto zokuvala ubuso kanye nokuhambisana kwe-elastomer

Ukubhanqana kwe-tribological kobuso besivalo kunquma amazinga okuguguleka, ama-coefficient okungqubuzana, kanye nokukhiqizwa kokushisa. Ukubhanqana okuvamile kufaka phakathi i-Silicon Carbide (SiC) ngokumelene ne-Carbon ukuze kusetshenziswe amanzi ajwayelekile kanye ne-hydrocarbon elula, okunikeza ukuthambisa okuhle kakhulu. Kuma-slurries abrasive, ukubhanqana okunzima kwe-SiC vs. Tungsten Carbide (TC) kuyadingeka ukuze kumelwane nokulinganisa.

Ukukhethwa kwe-Elastomer kubaluleke kakhulu ekuvimbeleni ukuwohloka kwamakhemikhali. Ama-O-rings ajwayelekile e-FKM (Viton) asebenza kahle kakhulu ezinkonzweni ezijwayelekile kodwa awohloka ngokushesha ngaphezu kuka-204°C (400°F). Ngokuphambene nalokho, ama-FFKM (Kalrez) compounds angagcina ukuqina kwawo kanye nokumelana kwamakhemikhali emazingeni okushisa aphezulu afinyelela ku-327°C (620°F), okwenza abe yincazelo ebalulekile yezinsizakalo zokuhlanza ezisezingeni eliphezulu.

Izidingo zohlelo lokucindezela, izinga lokushisa, kanye nokuhlanza

Ukucindezela kwenqubo kanye nokushisa kunquma isidingo sokulawulwa kwemvelo, okujwayelekile emhlabeni jikelele ngaphansi kwezinhlelo zokuhlanza ze-API 682. I-single cartridge seal ejwayelekile ingaphatha ukucindezela kwebhokisi lokugcwala kufika ku-20 kuya ku-25 bar (300 kuya ku-360 psi) ngaphandle kwenkinga.

Ngale kwalesi silinganiso sokucindezela, noma lapho kusingathwa uketshezi olushintshashintshayo nolunobuthi,izimbozo zekhatriji ezimbiliUkusebenzisa uhlelo lwe-barrier fluid olucindezelwe yi-Plan 53A noma i-Plan 53B kuba yimpoqo. Lezi zinhlelo zigcina ingcindezi ye-barrier fluid evame ukuba yi-1.5 kuya ku-2 bar (20 kuya ku-30 ​​psi) ephakeme kunengcindezi yenqubo yangaphakathi. Lo mehluko wengcindezi omuhle uqinisekisa ukuthi noma yikuphi ukuvuza okungenzeka kwenzeke ngaphakathi epompo kunokuba kuphume emkhathini, okuqinisekisa ukuthi akukho ukukhishwa komoya.

Izindlela ezivamile zokwehluleka kanye nokuvimbela

Ngisho nezivalo zekhatriji eziqine kakhulu zizoba yisisulu semikhuba emibi yokusebenza noma ukuphazamiseka kwesistimu. Ukusebenza okomile kusalokhu kuyimbangela ehamba phambili yokwehluleka kwesibonakaliso okubi kakhulu, okubangela ukushaqeka okusheshayo kokushisa kanye nokuqhekeka kwe-radial ebusweni obuqinile ngemizuzwana embalwa yokulahlekelwa ifilimu yoketshezi.

Indlela Yokukhetha Nokusebenzisa Izimbozo Zekhatriji

Ukuguqula indawo ibe yizivalo ze-cartridge mechanical kudinga ukuqinisekiswa kobunjiniyela obuhlelekile kanye nokunamathela ngokuqinile ezimisweni zokusebenzisa. I-cartridge seal echazwe kabi noma engasebenzi kahle izohluleka ngokushesha njengophawu lwengxenye yesikhathi esidlule.

Ukuqaliswa okuphumelelayo kuvala igebe phakathi komklamo wophawu lwethiyori kanye namaqiniso angokoqobo phansi kwesitshalo, okuqinisekisa ukuthi imishini ethuthukisiwe ihlangana kahle nobukhulu bephampu ekhona.

Ukukhethwa kwesivalo kanye nokuhlolwa kwesicelo

Onjiniyela kumele baqinisekise ngokucophelela imvilophu ebonakalayo yebhokisi lokugcwalisa lephampu ngaphambi kokucacisa iyunithi yekhatriji. Isikhala se-radial phakathi kweshafti kanye nembobo yebhokisi lokugcwalisa kumele ngokuvamile sinikeze okungenani amamilimitha angu-3.175 (amasentimitha angu-0.125) ukuze kufakwe umkhono wekhatriji futhi kuqinisekiswe ukugeleza koketshezi okwanele ukuze kuphole ubuso besivalo.

Ngaphezu kwalokho, i-shaft engenalutho kumele ihlolwe ukuthi ayinazo izinkinga zokufiphaza, ukufaka amagoli, noma ukungasebenzi kahle okubangelwa yizivalo zezingxenye zangaphambilini. Nakuba imikhono ye-cartridge iklanyelwe ukushelela futhi imboze umonakalo we-shaft okhona, ukuguguleka ngokweqile noma ukungasebenzi kahle kwe-shaft okungaphezu kuka-0.08 mm (0.003 amayintshi) kungalimaza uphawu lwangaphakathi lwe-O-ring phakathi kwe-sleeve ne-shaft, okudinga ukushintshwa kwe-shaft noma ukuphinda kusetshenziswe ngaphambi kokufakwa kwe-seal.

Ukufakwa kanye nokuqaliswa kwemikhuba emihle kakhulu

Ukufaka uphawu lwekhatriji kuncike kakhulu ekwenzeni uhlelo lokufaka ngendlela engenaphutha. Ama-gland bolts kumele aqiniswe ngokulinganayo ngendlela eshintshanayo ngokwencazelo eqondile yomenzi—ngokuvamile phakathi kuka-20 no-40 Nm kuye ngobubanzi be-stud—ukuvimbela ukuphambuka kwe-gland kanye nokungahambisani kahle kobuso okulandelayo.

Okubaluleke kakhulu, iziqeshana zangaphandle ezimaphakathi kumele zisuswe kuphela ngemva kokuba i-gland iboshwe ngokuqinile ekhasejini lephampu futhi izikulufu zesethi yesikhiya ziboshwe ngokuqinile emshafini. Ukususa lezi ziqeshana kusenesikhathi kakhulu kuzokonakalisa ngokushesha ukucindezeleka kwentwasahlobo okusethwe ngaphambilini. Okokugcina, abaqhubi kumele bakhiphe umoya ngokuphelele egumbini lokuvala ngaphambi kokuqala kwemoto; ukwehluleka ukuhlanza umoya ovalelekile kuzoholela ekusebenzeni okomile ngokushesha kanye nomonakalo wobuso ongenakulungiseka.

Ukulungiswa kwezindleko kanye nokuhlela ukuthuthukiswa

Nakuba izindleko zokuqala zokuthenga uphawu lwekhatriji oluhlanganiswe ngaphambilini ngokuvamile ziphakeme ngo-200% kuya ku-300% kunephawu lezingxenye ezifanayo, izizathu zezindleko zokuphathwa kwesitshalo zilula futhi zinhle kakhulu.

Uma kubhekwa ukwehla okukhulu kwemisebenzi yokufakwa okukhethekile, ukuqedwa okuphelele kwe-shaft fretting (okusindisa izindleko ezinkulu zokushintsha i-pump shafts ezibizayo), kanye nesikhathi sokungasebenzi esincishisiwe sokukhiqiza, izikhungo zivame ukuthola iMbuyiselo ephelele ekuTshalweni Kwezimali (i-ROI) zingakapheli izinyanga eziyi-12 kuya kweziyi-18. Ukuze kwandiswe le nzuzo yezezimali, ukuthuthukiswa kwe-bulk seal kufanele kuhlelwe ngendlela efanele ngesikhathi sokuguqulwa kwesitshalo okuhleliwe ukuze kuqedwe ngokuphelele ukuphazamiseka kwezinhlelo zokukhiqiza ezisebenzayo.

Uhlaka Lwezinqumo Zokuthuthukiswa Kwesivalo

Izikhungo ezisebenzisa amakhulu noma izinkulungwane zamaphampu e-centrifugal azikwazi ukuthuthukisa yonke imishini ejikelezayo ngasikhathi sinye. Uhlaka lwesinqumo olusekelwe kudatha oluqondiswe kumasu luyadingeka ukuze kwabelwe imali lapho luzoletha khona izinzuzo zokuthembeka eziphezulu kakhulu ngokushesha.

Ngokuhlaziya umlando wokugcinwa kwemishini kanye namazinga okwehluleka, abaphathi bemishini bangabona ukuthi yiziphi izinhlelo zokupompa ezichitha isabelomali sokugcinwa kwemishini futhi bazibeke phambili ekuguqulweni kwe-cartridge seal.

Yiziphi izinsizakalo zokupompa okufanele zibekwe phambili

Kumelwe kunikezwe kuqala amaphampu “omdlali omubi” abhalwe phansi—ikakhulukazi lawo abonisa i-MTBF engaphansi kwezinyanga eziyi-12. Ukuguqula lezi zimpahla ezihluleka njalo kunikeza impumuzo esheshayo kwabathwele kanzima kakhulu.amaqembu okulungisa.

Ezinye izigaba ezibalulekile kumele zifake amaphampu aphatha uketshezi oluyingozi, olunobuthi, noma oluvutha kakhulu lapho noma yikuphi ukuvuza kwangaphandle kubeka engcupheni yokuphepha ngokushesha noma ukwephulwa komthetho wezemvelo. Ngaphezu kwalokho, izinsizakalo ezisebenza emazingeni okushisa aphezulu enqubo (adlula ku-150°C) noma amaphampu enqubo eqhubekayo lapho isikhathi sokungasebenzi esingahleliwe sibangela izinhlawulo zezimali ezidlula u-$10,000 ngehora yizona zindlela eziyinhloko zokuguqulwa ngokushesha zibe yizimbobo ze-cartridge ezimbili ezithembeke kakhulu.

Indlela yokulinganisela izindleko zangaphambilini nenani lomjikelezo wokuphila

Ukulinganisela izindleko zangaphambilini zokuthuthukiswa kwesivalo sekhatriji nenani laso lesikhathi eside sokuphila kudinga ukuhlaziywa okuphelele kwezindleko zesikhathi sokuphila (i-LCC). I-LCC yangempela yesivalo semishini ihlanganisa intengo yokuqala yokuthenga, umsebenzi wokufaka ojwayelekile, ukusetshenziswa koketshezi oluvimbelwe, kanye nokulahlekelwa amandla okuqhubekayo ngenxa yokungqubuzana kwemishini.

Nakuba izivalo zekhatriji zidinga imali yokuqala ephezulu, umthwalo wazo wobuso olungiselelwe kahle, ukushabalalisa ukushisa okuphezulu, kanye nemikhono yokuvikela ehlanganisiwe njalo kunikeza ukwehla okungu-30% kuya ku-40% kwi-LCC iyonke esikhathini esijwayelekile sokusebenza seminyaka emi-5 uma kuqhathaniswa nezivalo zesikhathi esidlule. Ngokubeka izindinganiso ezidizayini ezithile zekhatriji esitshalweni, abaqhubi banganciphisa kakhulu ubunzima bempahla yezingxenye ezisele, okuthuthukisa kakhulu inzuzo yokusebenza yesikhathi eside.

Izinto Ezibalulekile Okufanele Uzicabangele

• Iziphetho ezibaluleke kakhulu kanye nesizathu sokuthi i-Cartridge Mechanical Seal ithuthukisa kanjani ukuthembeka kwephampu
• Imininingwane, ukuhambisana, kanye nokuhlolwa kwengozi okufanele kuqinisekiswe ngaphambi kokuthi uzibophezele
• Izinyathelo ezilandelayo ezisebenzayo kanye nezixwayiso abafundi abangazisebenzisa ngokushesha

imibuzo ejwayelekile ukubuzwa

I-cartridge mechanical seal ikuthuthukisa kanjani ukuthembeka kwephampu?

Iza isethwe kusengaphambili futhi ihlanganiswe efektri, okunciphisa amaphutha okufaka, ukuvuza kokuqala, kanye nokulayisha ubuso okungalingani. Lokhu kusiza ukwandisa impilo yesivalo kanye nesikhathi sokusebenza kwephampu.

Kungani uphawu lwekhatriji luthembeke kakhulu kunophawu lwengxenye?

I-cartridge seal ihlanganisa i-sleeve, ubuso, izipilingi, kanye ne-gland kuyunithi eyodwa. Lo mklamo wehlisa ukuzwela kokuqondanisa, uvikela ubuso be-seal, futhi unciphisa ingozi yokuphazamiseka kwe-shaft.

Ingakanani isikhathi sokulungisa esingagcinwa yizimbobo zekhatriji?

Ezimweni eziningi zokulungisa amaphampu, izimbobo zekhatriji zingafakwa ngaphansi kwemizuzu engama-90, uma kuqhathaniswa namahora ama-4 kuya kwayi-6 ezimbobo zezingxenye. Lokho kusho ukubuyela ngokushesha emsebenzini kanye nesidingo esiphansi sabasebenzi.

Ingabe iVictor Seals ingahlinzeka ngezivalo zekhatriji zokushintsha iphampu ye-OEM?

Yebo. I-Victor Seals inikeza ama-cartridge kanye nama-seal ahambisana ne-OEM emikhiqizo efana ne-Grundfos, IMO, Alfa Laval, Flygt, Lowara, APV, Fristam, kanye ne-Allweiler.

Yiziphi izimboni ezizuza kakhulu ezimpahleni ze-cartridge mechanical seals?

Ziwusizo ikakhulukazi ekusetshenzisweni kwamakhemikhali, ezimayini, ku-oyili nasegesini, kumakhemikhali kaphethiloli, kugesi, ephepheni nasephepheni, olwandle, kanye nasemanzini lapho ukulawulwa kokuvuza kanye nesikhathi sokusebenza kubalulekile khona.