Zeziphi iivalvu ezinokuthi zisetyenziselwe ukuphosa?

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 iivalvu zokumisa okanye ukuqala 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 “izivalo 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 i-valve, 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 yokubhobhoza efunekayo.

Ngale ndlela, iivalvu zokulawula ziziivalvu ezikhethekileyo zokugobhoza.Oko kuthethiweyo, iivalve zokulawula zinokutshiza kodwa ayizizo zonke iivalve eziziivalvu zokulawula.

Owona mzekelo ubalaseleyo sisixokelelwano samanzi aphantsi komhlaba apho amandla angaphandle kufuneka akhulule ivacuum ukuze igesi ingene kwivalve.

Indlela Yokuphosela

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, kucudisa imidiya kwivalve evuleke kancinane.Iimolekyuli zeendaba ziqala ukuxubana.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 ayatshintsha kwisantya kunye noxinzelelo ngenxa yesithintelo (ubhontsi).Yomelele kunamanzi angekagqibi ivelufa okwangoku.Ngokwesiseko, oku kukuxinana.

Ukufaka oku kwinkqubo yombhobho, inkqubo idinga igesi epholileyo ukuba ibe kwimeko efunekayo yobushushu obufunekayo.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 kweevalvu ezijikelezayo.Rhoqo umntu unokufumana iivalvu ezibethayo kwezi mveliso zilandelayo:
● 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

Iivalve zeglobhu zezinye zezona ntlobo zidumileyo zeevalvu.Ivalve yeglowubhu isetyenziswa ikakhulu njengevalve yokuthontsiza.Oku kusapho 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 esebenza ngamandla ukuhambisa isiqu kunye nokuvula ivalve.Ukuhla koxinzelelo kunye noluhlu lolawulo lokuhamba zizinto ezimbini ezithathelwa ingqalelo kubuchule obusebenzayo bokugungqa.

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 lwevalve yekota.

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 eshukumayo.Iivalve zesango zineediski ezihamba zinyuka zisihla xa zivula nokuvala iivalve.Ngokuqhelekileyo zisetyenziswa njengenkonzo yokuvula ukucima.Iivalve zesango zinezithintelo njengeevalve ezijikelezayo.

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% ayizukufikelela kwizakhono ezinqwenelekayo zokugoba.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 yepinki ine-elastomer liner ethambileyo.Iyacinezelwa ukuvala kusetyenziswa uxinzelelo lolwelo.Ngenxa yoko, igama layo.Iphuma kwintsapho eshukumayo yomgca, ivalve yepinki ilula kwaye kulula ukuyigcina.

Izivalo zepinki zisebenza kakhulu xa ubunyumba kunye nococeko zizinto eziphambili.I-elastomer liner ikhusela iindawo zentsimbi zevalve.

Isiqu sincamathela kwicompressor ebekwe kanye ngentla kwelayini.I-valve ye-pinch ivala xa i-compressor iyancipha kwi-liner.

Ukukwazi ukuthokoza kwevalve yepinch 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 sokubetha 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 ekubetheni.

Ukulinganiselwa

Nangona inokubonelela ngobungqina obungavuziyo, iivalvu ze-diaphragm zinokumelana nobushushu obuphakathi kunye noluhlu loxinzelelo.Ukongeza, 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.Uyakwazi ukujonga ivalufa ye-3D yepitshi apha.

Ukulinganiselwa

Iivalvu zeenaliti zezemisebenzi eethe-ethe yamashishini.Oko kuthethwa, imidiya etyebileyo kunye ne-viscous ayifanelekanga kwiivalvu zenaliti.Ukuvulwa kwale valve kuncinci kwaye amasuntswana akwi-slurries avaleleka kumngxunya.

Indlela yokukhetha iValve yokuThwaza

Uhlobo ngalunye lwevalve ye-throttling lunenzuzo kunye nemida.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 ukuba umthamo olinganiselweyo we-throttling.Ngokunokwenzeka, iyakuba kufutshane nendawo yayo evaliweyo.Oku kwenza ivalve ithande ukungcangcazela kunye nokhukuliseko.

Ngapha koko, ivalve enkulu kakhulu inokuba 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 ye-manual isenokungasebenzi kakuhle ekuvuleni okanye ekuvaleni ivalve ngenxa yoko.

Uqhagamshelwano

Indlela i-valve exhunywe ngayo kwimibhobho nayo ifanelekile ukuqwalasela.Kubalulekile ukulungelelaniswa nokudityaniswa kwemibhobho ekhoyo kunokuba imibhobho yokulungelelanisa i-valve.

Kubiza kakhulu ukuhambelana nevalve kwiimfuno zemibhobho ekhoyo.Umzekelo, xa iziphelo zombhobho zineeflange, ivelufa kufuneka nayo 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 iivalve ze-throttling.Ngaloo nto, kubalulekile ukuqonda imigangatho enjalo yokhuseleko lomntu wonke.

Isishwankathelo

Ngelixa iivalvu ezininzi zinamandla okugungxula okulinganiselweyo, umntu akazisebenzisi nje ngolo hlobo.Ukuze i-valve ihlale ixesha elide, kungcono ukwazi ukuba luhlobo luni lwevalve olufanelekileyo kwisicelo esithile se-throttling.
Isixhobo somenzi wevalvu yereferensi: IsiKhokelo sokugqibela: Abavelisi beValve abagqwesileyo eTshayina