Jonga umfanekiso oMkhulu
Iinkqubo zemibhobho azigqibekanga ngaphandle kweevalvu zamashishini.Ziza ngobukhulu kunye nezimbo ezahlukeneyo kuba ezi zifuna ukukhawulelana neemfuno ezahlukeneyo.
Iivalve zoshishino zinokuhlelwa ngokomsebenzi wazo.Kukho iivalve zokumisa okanye uqalise ukuhamba kwemidiya;kukho ezo zilawula apho ulwelo luhamba khona.Kukho ezinye ezinokutshintsha inani leendaba ezihambayo.
Ukukhetha uhlobo olululo lwesivalo lubalulekile kumsebenzi woshishino.Uhlobo olungalunganga luya kuthetha ukuvala inkqubo okanye inkqubo ephantsi kokusebenza.
Yintoni iValves ephothozayo
Ivalve ye-throttling ingavula, ivale kwaye ilawule ukuhamba kwemidiya.Iivalve ezithontsizayo zizivalo zokulawula.Abanye abantu basebenzisa igama elithi “ivalve zokulawula” ukuthetha iivalvu ezibethayo.Inyaniso kukuba, kukho umgca ocacileyo ochaza ezi zimbini.Iivalve zokuthokomisa zineediski ezingayekiyo kuphela okanye ziqalise ukuhamba kwemidiya.Ezi diski zinokulawula inani, uxinzelelo kunye nobushushu beendaba ezidlula kuyo nayiphi na indawo emiselweyo.
Iivalve ze-throttling ziya kuba noxinzelelo oluphezulu kwelinye icala kunye noxinzelelo oluphantsi kwelinye icala.Oku kuvala ivalve, kuxhomekeke kwinqanaba loxinzelelo.Omnye umzekelo onjalo yivalve ye-diaphragm.
Ngakolunye uhlangothi, iivalve zokulawula ziya kulawula ukuhamba kwemidiya kunye nokusetyenziswa kwe-actuator.Ayinakusebenza ngaphandle komnye.
Uxinzelelo kunye nobushushu buphazamisa ukuhamba kwemidiya ukuze iivalvu zolawulo zilawule ezi.Kwakhona, ezi zivalo zinokutshintsha ukuhamba okanye iimeko zoxinzelelo ukuze zihambelane neemeko zenkqubo yombhobho ofunekayo.
Ngokwale ngqiqo, iivalvu zolawulo ziziivalvu ezikhethekileyo zokuthontsiza.Oko kuthethiweyo, iivalvu zokulawula zinokugungqa kodwa ayizizo zonke iivalve eziziivalvu zokulawula.
Owona mzekelo ubalaseleyo sisixokelelwano samanzi aphantsi komhlaba apho amandla angaphandle kufuneka akhulule ivacuum ukuze igesi ingene kwivalvu.
Indlela Yokuphonononga
Xa umbhobho usebenzisa ivalve ye-throttling, isantya sokuhamba kwemidiya siyatshintsha.Xa uvula ngokuyinxenye okanye uvala ivalve, kukho umqobo ekuhambeni kolwelo.Ngaloo ndlela, ulawulo lweendaba.
Oku ke, kuhlanganisa imidiya kwivalve evuleke kancinane.Iimolekyuli zeendaba ziqala ukuxubhana.Oku kudala ingxabano.Le friction iphinda icothise ukuhamba kwemidiya njengoko idlula kwivalve.
Ukucacisa kakuhle, cinga ngombhobho njengethumbu legadi.Ukuvula, amanzi aphuma ngokuthe ngqo kumbhobho ngaphandle kwesithintelo.Ukuhamba akunamandla.Ngoku, cinga ngevalve njengobhontsi ovale umlomo wombhobho.
Amanzi aphumayo atshintsha kwisantya kunye noxinzelelo ngenxa yesithintelo (ubhontsi).Yomelele kunamanzi angekagqibi ivelufa okwangoku.Ngokwesiseko, oku kukuxinana.
Ukusebenzisa oku kwinkqubo yemibhobho, inkqubo idinga igesi epholileyo ukuba ibe kwimeko efunekayo yobushushu.Ngevalve ye-throttling endaweni, ubushushu begesi buyanda.Oku kungenxa yeemolekyuli ezikhuhlana zodwa njengoko zizama ukuphuma kwivalvu ngembobo elinganiselweyo.
Umthombo: https://www.quora.com/What-is-the-throttling-process
Izicelo zeValve yokuphola
Kukho uluhlu olubanzi lokusetyenziswa kweevalve zokuthontsiza.Rhoqo umntu unokufumana iivalvu ezithontsizayo kolu setyenziso lulandelayo lwemizi-mveliso:
● Iinkqubo zokupholisa umoya
● Ukufakwa efrijini
● Ii-hydraulics
● Ukusetyenziswa komphunga
● Ukusetyenziswa kobushushu obuphezulu
● Ukusetyenziswa kwamachiza
● Ukusetyenziswa kwemichiza
● Izicelo zokulungisa ukutya
● Iinkqubo zeoyile yamafutha
Iivalvu ezinokuthi zisetyenziselwe ukuphosa
Ayizizo zonke iivalvu ze-throttling.Uyilo lwevalvu sesinye sezizathu eziphambili zokuba kutheni ezinye iivalvu zingafanelekanga.
Iglobhu
Iivalvu zeglobhu zezinye zezona ntlobo zidumileyo zeevalvu.Ivalve yeglowubhu isetyenziswa ikakhulu njengevalve yokuthontsiza.Oku kuyinxalenye yosapho lwevalvu eshukumayo.Idiski yeglowubhu iya phezulu okanye ezantsi ngokunxulumene nesitulo seringi esimileyo.Idisk yayo okanye iplagi ilawula ubungakanani bemidiya enokudlula.
Isithuba esiphakathi kwesihlalo kunye neringi sivumela ivalve yeglowubhu ukuba isebenze njengevalve enkulu yokuthontsiza.Kukho umonakalo omncinci kwisihlalo kunye nediski okanye iplagi ngenxa yoyilo lwayo.
Ukulinganiselwa
Ngenxa yoyilo lwevalve yeglowubhu, xa isetyenziswa kwizicelo zoxinzelelo oluphezulu, idinga i-activator ezenzekelayo okanye enamandla ukuhambisa isiqu kunye nokuvula ivalve.Ukwehla koxinzelelo kunye noluhlu lolawulo lokuhamba zizinto ezimbini eziqwalaselweyo zobuchule bokuthontsiza obusebenzayo.
Kukwakho ukuvuza okunokwenzeka ngenxa yesihlalo esonakeleyo njengoko oku kuqhagamshelwana ngokupheleleyo nemidiya yokuhamba.Le valve nayo ixhomekeke kwimiphumo ye-vibration, ngakumbi xa i-media igesi.
Ibhabhathane
Iivalve zebhabhathane zikhangeleka njengevalve yesango.Kodwa, omnye womahluko wabo owahlukileyo yivalve yebhabhathane yeyosapho lwekota.
Amandla angaphandle asebenza kwi-activator.Le actuator iqhotyoshelwe kwisiqu esidibanisa kwidiski.
Phakathi kweevalve eziqhelekileyo, i-valve ye-butterfly iyona nto ifanelekileyo kakhulu kwi-throttling.Ukujika kwekota epheleleyo kunokuvula okanye ukuvala ivalve.Ukuze i-throttling yenzeke, idinga kuphela ukuvula kancinci ukuze i-media idlule.
Ukulinganiselwa
Enye yezithintelo zeevalve zebhabhathane kukuba i-disc isoloko isendleleni yokuhamba kweendaba.I-disc yonke ichaphazeleka ngakumbi kukhukuliseko.Kwakhona, ngenxa yolu yilo, ukucoca iindawo zangaphakathi kunzima.
Ukuze i-valve yebhabhathane isebenze, izibalo ezifanelekileyo kufuneka zichonge ukuhamba okuphezulu kunye neemfuno zoxinzelelo.
Isango
Ivalve yesango yeyosapho lwevalve yentshukumo.Iivalve zesango zineediski ezihamba zinyuka zisihla xa zivula nokuvala iivalve.Zisetyenziswa ikakhulu njengokuvula iinkonzo zokuvala.Iivalve zesango zinezithintelo njengeevalve zokuthontsiza.
Kwindawo ephantse ivalwe, i-throttling iyenzeka njengoko inciphisa ukuhamba kwemidiya.Oku kwandisa isantya semidiya njengoko iphuma kwivalve.
Ukulinganiselwa
Ekuphela kwexesha onokuthi usebenzise iivalvu zesango xa ivalve ivalwe ngama-90%.Ukuyivala ukuya kuthi ga kwi-50% ayizukuphumelela ubunakho obunqwenelekayo bokubhuqa.Icala elisezantsi ekusebenziseni i-valve yesango kukuba isantya seendaba sinokutshabalalisa ngokulula ubuso bediski.
Ukongezelela, iivalve zesango akufanele zisetyenziswe njengeevalve ezijikelezayo ixesha elide.Uxinzelelo lunokukrazula isihlalo sesango ukuze ivalve ingasakwazi ukuvala ngokupheleleyo.Enye, ukuba i-medium ilulwelo, kukho ukungcangcazela.Oku kungcangcazela kunokuchaphazela isihlalo.
Pinch
Ithathwa njengenye yoyilo olulula, ivalve yepinch ineelastomer liner ethambileyo.Iyacinezelwa ukuvala kusetyenziswa uxinzelelo lolwelo.Ngenxa yoko, igama layo.Iphuma kwintsapho eshukumayo yomgca, ivalve yepinki ilula kwaye kulula ukuyigcina.
Iivalve zepinki zisebenza kakhulu xa ubunyumba kunye nococeko zizinto eziphambili.I-elastomer liner ikhusela iindawo zentsimbi zevalve.
Isiqu sincamathela kwicompressor ebekwe kanye ngentla komgca.I-valve ye-pinch ivala xa i-compressor iyancipha kwi-liner.
Ukukwazi ukuthokoza kwevalve yepitshi idla ngokuba phakathi kwe-10% ukuya kwi-95% yomthamo wokuqukuqela.Elona nqanaba lisebenzayo likwi-50%.Oku kungenxa yomgca othambileyo kunye neendonga ezigudileyo.
Ukulinganiselwa
Le valve ayisebenzi kakuhle xa i-media ineengqungquthela ezibukhali, ngakumbi xa i-valve ivaliwe ngama-90%.Oku kunokubangela iinyembezi kwi-elastomer liner.Le valve ayifanelekanga kwimidiya yegesi, kunye noxinzelelo oluphezulu kunye nezicelo zokushisa.
I-diaphragm
Ivalve ye-diaphragm ifana nqwa nevalve yepinki.Nangona kunjalo, isixhobo sayo sokuthomalalisa yi-elastomer diaphragm endaweni ye-elastomer liner.Unokujonga ukuba i-diaphragm valves isebenza njani kule vidiyo.
Kwi-pinch valve, i-compressor iyancipha kwi-liner kwaye iyigxininise ukumisa ukuhamba kweendaba.Kwivalve ye-diaphragm, idiski ye-diaphragm icofa emazantsi evalve ukuyivala.
Uyilo olunjalo luvumela amasuntswana amakhulu ukuba ahambe ngevalve.Phakathi kwevalve ye-diaphragm ethe tye kunye nevalve ye-diaphragm yohlobo lwe-weir, i-valve yokugqibela ingcono yokubetha.
Ukulinganiselwa
Nangona inokubonelela ngobungqina obungavuziyo, iivalvu ze-diaphragm zinokumelana nobushushu obuphakathi kunye noluhlu loxinzelelo.Ukongezelela, ayinakusetyenziswa kwimisebenzi emininzi yokujika.
Inaliti
Ivalve yenaliti iyafana neevalvu zeglowubhu.Endaweni yediski efana neglowubhu, ivalve yenaliti inediski efana nenaliti.Oku kulungele ngakumbi izicelo ezifuna ummiselo ochanekileyo.
Ukongeza, iivalvu zeenaliti zizilawuli ezingcono zokulawula ivalvu kumanani amancinci.Ulwelo luhamba kumgca othe ngqo kodwa lujike ama-900 ukuba ivalve iyavuleka.Ngenxa yolo yilo lwe-900, ezinye iinxalenye zediski zidlula kwindawo yokuvula isihlalo ngaphambi kokuba kuvalwe ngokupheleleyo.Ungajonga ivalufa ye-3D yepitshi apha.
Ukulinganiselwa
Iivalvu zeenaliti zezemisebenzi ecekethekileyo yemizi-mveliso.Oko kuthethwa, imidiya etyebileyo kunye ne-viscous ayifanelekanga kwiivalvu zenaliti.Ukuvulwa kwale valve kuncinci kwaye amasuntswana akwi-slurries avaleleka kumngxuma.
Ungayikhetha njani iValve yokuThoba
Uhlobo ngalunye lwevalve ye-throttling luneenzuzo kunye nokunciphisa.Ukuqonda injongo yokuphumeza ivalve ye-throttling kusoloko kucutha ukhetho lohlobo oluchanekileyo lwevalve yokuthontsiza.
Ubungakanani beValve
Ubungakanani bevalvu echanekileyo buthetha ukususa imiba yevalvu yexesha elizayo.Umzekelo, ivalve enkulu kakhulu ithetha ukungqubeka okulinganiselweyo.Ngokunokwenzeka, iyakuba kufutshane nendawo yayo evaliweyo.Oku kwenza ivalve ithande ukungcangcazela kunye nokhukuliseko.
Ngapha koko, ivalve enkulu kakhulu iya kuba nezixhobo ezongezelelweyo njengohlengahlengiso kwimibhobho.Izifakelo zineendleko.
Izinto zokwakha
Isixhobo somzimba wevalve ngumba obalulekileyo xa ukhetha ivalve ye-throttling.Ifanele ihambelane nodidi lwezinto eziya kudlula.Umzekelo, imidiya esekwe kwikhemikhali kufuneka idlule kwivalve engagqwaliyo.Imidiya ethanda ukufikelela kwiqondo lokushisa eliphezulu okanye uxinzelelo kufuneka idlule kwi-alloy eqinile kunye neengubo zangaphakathi.
Intshukumo
I-Actuation ikwadlala indima enkulu ekukhetheni ivalve yokuthontsiza elungileyo.Kwizicelo zemibhobho, kukho iimeko apho uxinzelelo olunamandla lukhoyo.I-actuator yesandla isenokungasebenzi ngokufanelekileyo ekuvuleni okanye ekuvaleni ivalve ngenxa yoko.
Uqhagamshelwano
Indlela i-valve exhunywe ngayo kwimibhobho nayo ifanelekile ukucinga.Kubalulekile ukulungelelaniswa nokudityaniswa kwemibhobho ekhoyo kunokuba imibhobho yokulungelelanisa i-valve.
Kubiza kakhulu ukuhambelana nevalve kwiimfuno zemibhobho ekhoyo.Umzekelo, xa iziphelo zombhobho zinee-flanges, ivalve kufuneka kwakhona ibe noqhagamshelo olunencasa.
Imigangatho yoShishino
Imigangatho yeshishini ibaluleke ngokufanayo.Kukho imigangatho yohlobo lwemathiriyeli enokusetyenziswa kwimidiya ethile.Kukwakho nemigangatho ekudibaneni kokuphela okanye ubukhulu bentsimbi esetyenziselwa ivalve.
Imigangatho enjalo izisa ukhuseleko kwizicelo.Ngokuqhelekileyo kukho ukunyuka kweqondo lokushisa kunye noxinzelelo xa usebenzisa i-valve ye-throttling.Ngaloo nto, kubalulekile ukuqonda imigangatho enjalo yokhuseleko lomntu wonke.
Isishwankathelo
Ngelixa iivalvu ezininzi zinamandla okugungxula, umntu akazisebenzisi nje ngolo hlobo.Ukuze i-valve ihlale ixesha elide, kungcono ukwazi ukuba luhlobo luni lwevalve olufanelekileyo kwisicelo esithile se-throttling.
Reference valve umenzi resource: The Ultimate Guide: Best abavelisi iValve e China
Ixesha lokuposa: Feb-25-2022