Yimaphi ama-valve angasetshenziselwa ukudonsa?

Buka Isithombe Esikhulu
Izinhlelo zamapayipi aziphelele ngaphandle kwamavalvu ezimboni.Ziza ngosayizi nezitayela ezahlukene ngoba zidinga ukubhekelela izidingo ezahlukene.
Ama-valve ezimbonini angahlukaniswa ngokuya ngomsebenzi wawo.Kukhona ama-valve ayeka noma aqale ukugeleza kwemidiya;kukhona ezilawula ukuthi uketshezi lugeleza kuphi.Kukhona ezinye ezingashintsha inani lemidiya eligelezayo.
Ukukhetha uhlobo olulungile lwe-valve kubalulekile ekusebenzeni kwezimboni.Uhlobo olungalungile lungasho ukuvala isistimu noma isistimu ingaphansi kokusebenza.

Yini Ama-Valves Adonsayo

I-valve edonsayo ingavula, ivale futhi ilawule ukugeleza kwemidiya.Ama-valve e-throttling ama-valve okulawula.Abanye abantu basebenzisa igama elithi “ama-valve okulawula” ukuze baqonde ama-valve adonsayo.Iqiniso liwukuthi, kunomugqa ohlukile ochaza lezi zinto ezimbili.Ama-valve e-throttling anamadiski angagcini nje ngokumisa noma aqale ukugeleza kwemidiya.Lawa madiski angakwazi futhi ukulawula inani, ingcindezi kanye nezinga lokushisa kwemidiya edlula kunoma yisiphi isikhundla esinqunyiwe.

Ama-valve e-throttling azoba nokucindezela okuphezulu ekugcineni komunye kanye nokucindezela okuphansi komunye umkhawulo.Lokhu kuvala i-valve, kuye ngezinga lokucindezela.Esinye sezibonelo ezinjalo yi-valve ye-diaphragm.

Ngakolunye uhlangothi, ama-valve okulawula azolawula ukuhamba kwemidiya ngokusebenzisa i-actuator.Ngeke isebenze ngaphandle kweyodwa.

Ukucindezela kanye nezinga lokushisa kuphazamisa ukuhamba kwemidiya ngakho amavalvu okulawula alawula lokhu.Futhi, lawa ma-valve angashintsha ukugeleza noma izimo zokucindezela ukuze afane nezimo ezidingekayo zesistimu yamapayipi.

Ngalo mqondo, ama-valve okulawula angama-valve akhethekile adonsayo.Uma sekushiwo, ama-valve okulawula angakwazi ukudonsa kodwa akuwona wonke ama-valve adonsayo angama-valve okulawula.

Isibonelo esihle kakhulu isistimu ye-hydraulic lapho amandla angaphandle kufanele akhulule i-vacuum ukuze igesi ingene kuvalvu.

I-Throttling Mechanism

Uma ipayipi lisebenzisa ivalvu yokudonsa, izinga lokugeleza kwemidiya liyashintsha.Lapho uvula noma uvala kancane i-valve, kunomkhawulo ekugelezeni koketshezi.Ngakho, ukulawula abezindaba.

Lokhu-ke kuhlanganisa imidiya kuleyo valve evuleke kancane.Amangqamuzana abezindaba aqala ukuhlangana.Lokhu kudala ukungqubuzana.Lokhu kungqubuzana kubuye kubambezele ukugeleza kwemidiya njengoba idlula kuvalvu.

Ukuze ufanekise kangcono, cabanga ngepayipi njengepayipi elingadini.Uma ivula, amanzi aphuma aqonde ngaphandle kwepayipi ngaphandle kokuvinjelwa.Ukugeleza akunamandla.Manje, cabanga ngevalvu njengesithupha esivale kancane umlomo wepayipi.

Amanzi aphumayo ashintsha isivinini nomfutho ngenxa yokuvimbeka (isithupha).Inamandla kakhulu kunamanzi angakadluli ivalvu okwamanje.Ngomqondo oyisisekelo, lokhu ukugoqa.

Ukusebenzisa lokhu ohlelweni lwamapayipi, isistimu idinga igesi epholile ukuze ibe sesimweni esidingekayo sokushisa.Njengoba i-valve ye-throttling isendaweni, izinga lokushisa legesi liyakhuphuka.Lokhu kubangelwa ama-molecule akhuhlana wodwa njengoba ezama ukuphuma kuvalvu ngembobo elinganiselwe.

Umthombo: https://www.quora.com/What-is-the-throttling-process

Izicelo ze-Valve ezicindezelayo

Kunobubanzi obubanzi bokusetshenziswa kwama-valve e-throttling.Ngokuvamile umuntu angathola ama-valve adonsayo kulezi zicelo zezimboni ezilandelayo:
● Amasistimu omoya
● Isiqandisi
● Ama-hydraulics
● Izinhlelo zokusebenza ze-Steam
● Izinhlelo zokusebenza ezisezingeni eliphezulu
● Izicelo zemithi
● Izicelo zamakhemikhali
● Izicelo zokucubungula ukudla
● Amasistimu kawoyela wamafutha

Amavalvu Angasetshenziselwa Ukudonsa

Akuwona wonke ama-valve awe-throttling.Ukwakhiwa kwe-valve kungesinye sezizathu ezinkulu zokuthi kungani amanye ama-valve engama-throttler angafaneleki.

Imbulunga

Ama-valve e-globe angenye yezinhlobo ezidume kakhulu zama-valve.I-valve ye-globe isetshenziswa ngokuyinhloko njenge-valve yokudonsa.Lokhu kungokomndeni wamavalvu anyakazayo.I-globe disk iya phezulu noma phansi ngokuhlobene nesihlalo esimile.Idiski noma ipulaki yayo ilawula inani lemidiya engadlula.

Isikhala phakathi kwesihlalo nendandatho sivumela i-valve yomhlaba ukuthi isebenze njenge-valve enkulu edonsayo.Kunomonakalo omncane esihlalweni nediski noma ipulaki ngenxa yokwakheka kwayo.

Ukulinganiselwa

Ngenxa yokwakheka kwe-valve yembulunga, uma isetshenziswa ezinhlelweni zokucindezela okukhulu, idinga i-actuator ezenzakalelayo noma enamandla ukuze inyakaze isiqu futhi ivule ivalvu.Ukwehla kwengcindezi kanye nobubanzi bokulawula ukugeleza yizinto ezimbili ezicatshangelwayo zamakhono asebenzayo wokudonsa.

Kukhona futhi amathuba okuvuza ngenxa yesihlalo esilimele njengoba lokhu kuhlangana ngokugcwele ne-flow media.Le valve iphinde ijwayele imiphumela yokudlidliza, ikakhulukazi uma imidiya iyigesi.

Butterfly

Ama-valve ovemvane abukeka njenge-valve yesango.Kodwa, omunye umehluko wabo ohlukile ivalve uvemvane ingeyomndeni we-quarter-turn valve.

Amandla angaphandle asebenza ku-actuator.Le actuator ixhunywe esiqwini esixhuma kudiski.

Phakathi kwama-valve avame kakhulu, i-valve ye-butterfly ifaneleka kakhulu ukudonsa.Ukujika kwekota egcwele kungavula noma ukuvala ivalvu.Ukuze i-throttling yenzeke, idinga kuphela ukuvula kancane ukuze imidiya idlule.

Ukulinganiselwa

Enye yemikhawulo ye-butterfly valves ukuthi i-disc ihlale isendleleni yokugeleza kwemidiya.I-disc yonke isengozini yokuguguleka.Futhi, ngenxa yalo mklamo, ukuhlanza izingxenye zangaphakathi kunzima.

Ukuze i-valve uvemvane isebenze kahle, izibalo ezifanele kufanele zihlonze ukugeleza okuphezulu nezidingo zokucindezela.

Isango

I-valve yesango ingeyomndeni wama-valve ahambayo.Ama-valve esango anama-disc ahamba phansi naphezulu ukuze kuvulwe futhi kuvalwe ama-valve.Ngokuyinhloko zisetshenziswa njengezinsiza zokuvala.Ama-valve esango anemikhawulo njengama-valve adonsayo.

Endaweni ecishe ivaleke, i-throttling iyenzeka njengoba ikhawulela ukuhamba kwemidiya.Lokhu kwandisa isivinini semidiya njengoba iphuma ku-valve.

Ukulinganiselwa

Isikhathi kuphela lapho kufanele usebenzise ama-valve esango ukuze ushaye i-valve yilapho i-valve ivalwe ngo-90%.Ukuyivala ibe cishe ku-50% ngeke kuzuze amakhono afiselekayo okuphusha.Okubi ekusebenziseni i-valve yesango ukuthi isivinini semidiya singasusa kalula ubuso bediski.

Ukwengeza, ama-valve esango akufanele asetshenziswe njengama-valve acindezelayo isikhathi eside.Ukucindezela kungadabula isihlalo sesango ukuze i-valve ingasakwazi ukuvala ngokuphelele.Enye, uma i-medium iwuketshezi, kukhona ukudlidliza.Lokhu kudlidliza kungathinta nesihlalo.

Ncinza

Ibhekwa njengenye yemiklamo elula, i-valve yokuncinza ine-elastomer liner ethambile.Impintshwa ukuze ivaleke kusetshenziswa umfutho we-fluid.Ngakho, igama layo.Iyingxenye yomndeni onyakazayo, i-valve yokuncinza ayisindi futhi kulula ukuyinakekela.

Ama-valve e-pinch asebenza kahle kakhulu lapho ubunyumba kanye nokukhucululwa kwendle kuyizinto eziza kuqala.I-elastomer liner ivikela izingxenye zensimbi zevalvu.

Isiqu sinamathela ku-compressor ebekwe umugqa ncamashi ngaphezu kolayini.I-valve yokuncinza ivala lapho i-compressor yehlela ku-liner.

Amandla okugoqa we-pinch valve ngokuvamile aphakathi kuka-10% kuya ku-95% umthamo wezinga lokugeleza.Izinga layo lokusebenza kahle kakhulu liku-50%.Lokhu kungenxa ye-liner ethambile nezindonga ezibushelelezi.

Ukulinganiselwa

Le valve ayisebenzi kahle uma imidiya inezinhlayiya ezibukhali, ikakhulukazi uma i-valve ivalwe ngo-90%.Lokhu kungabangela izinyembezi ku-elastomer liner.Le valve ayifanele imidiya yegesi, kanye nokucindezela okuphezulu nokushisa kwezicelo.

I-diaphragm

I-valve ye-diaphragm ifana ncamashi nevalve yokuncinza.Kodwa-ke, idivayisi yayo yokudonsa i-elastomer diaphragm esikhundleni se-elastomer liner.Ungahlola ukuthi ama-valve e-diaphragm asebenza kanjani kule vidiyo.

Ku-valve yokuncinza, i-compressor yehlela ku-liner bese iyimpintsha ukuze imise ukugeleza kwemidiya.Ku-valve ye-diaphragm, idiski ye-diaphragm icindezela phansi kwe-valve ukuyivala.

Umklamo onjalo uvumela izinhlayiya ezinkulu ukuthi zihambe nge-valve.Phakathi kwevalve ye-diaphragm eqondile kanye ne-valve ye-diaphragm yohlobo lwe-weir, eyokugcina ingcono ukudonsa.

Ukulinganiselwa

Nakuba inganikeza uphawu lobufakazi olungavuzi, ama-valve e-diaphragm angakwazi ukumelana nezinga lokushisa elimaphakathi kanye nebanga lokucindezela.Ukwengeza, ayikwazi ukusetshenziswa emisebenzini ye-multi-turn.

Inaliti

I-valve yenaliti ifana nama-globe valves.Esikhundleni sediski efana nembulunga, ivalve yenaliti inediski efana nenaliti.Lokhu kufaneleka kakhulu kuzinhlelo zokusebenza ezidinga ukulawulwa okunembayo.

Ukwengeza, ama-valve enaliti ayizilawuli ezingcono zokulawula ama-valve ngamanani amancane.Uketshezi luhamba ngomugqa oqondile kodwa lujika u-900 uma i-valve ivuleka.Ngenxa yalowo mklamo we-900, ezinye izingxenye zediski zidlula endaweni yokuvula isihlalo ngaphambi kokuvalwa ngokuphelele.Ungabuka i-pinch valve 3D animation lapha.

Ukulinganiselwa

Ama-valve yenaliti awokusebenza ezimbonini ezintekenteke.Uma sekushiwo, imidiya ewugqinsi ne-viscous ayifanelekile kuma-valve yenaliti.Ukuvuleka kwale valve kuncane futhi izinhlayiya eziku-slurries zivaleleka emgodini.

Indlela yokukhetha i-Throttling Valve

Uhlobo ngalunye lwe-valve ye-throttling lunezinzuzo nemikhawulo yalo.Ukuqonda inhloso yokusebenzisa i-valve edonsayo njalo kunciphisa ukukhetha kohlobo olufanele lwe-valve edonsayo.

Usayizi weValve

Usayizi wevalvu ofanele usho ukuqeda izinkinga zevalvu zesikhathi esizayo.Isibonelo, i-valve enkulu kakhulu isho umthamo olinganiselwe wokudonsa.Cishe, izoba seduze nendawo yayo evaliwe.Lokhu kwenza i-valve ijwayele ukudlidliza nokuguguleka.

Ngaphezu kwalokho, i-valve enkulu kakhulu ingaba nezinto ezengeziwe njengokulungiswa kwamapayipi.Izinto ezifakwayo ziyabiza.

Izinto zokwakha

I-valve yomzimba iyisici esibalulekile lapho ukhetha i-valve edonsayo.Kufanele ihambisane nohlobo lwezinto ezizodlula.Isibonelo, imidiya esekwe kumakhemikhali kufanele idlule kuvalvu engagqwali.Imidiya evame ukufinyelela izinga lokushisa eliphezulu noma ingcindezi kufanele idlule ku-alloy eqinile ene-coating yangaphakathi.

Ukwenza

I-actuation nayo idlala indima enkulu ekukhetheni i-valve efanele yokudonsa.Kuzicelo zamapayipi, kunezimo lapho kukhona ukucindezela okunamandla.I-actuator eyenziwa ngesandla ingase ingasebenzi kahle ekuvuleni noma ekuvaleni i-valve ngenxa yalokho.

Ukuxhumana

Indlela i-valve exhunywe ngayo kumapayipi nayo kufanelekile ukucatshangelwa.Kubalulekile ukuzivumelanisa nokuxhunywa kwamapayipi okukhona kunokuba amapayipi avumelane ne-valve.

Kubiza kakhulu ukuze kuhambisane nezidingo zamapayipi ezikhona.Isibonelo, lapho ukuphela kwepayipi kunama-flange, i-valve kufanele futhi ibe nokuxhunywa kokuphela kwe-flanged.

Amazinga Emboni

Izindinganiso zemboni zibalulekile ngokufanayo.Kunamazinga ohlobo lwezinto ezizosetshenziswa kumidiya ethile.Kukhona futhi izindinganiso ekuxhumekeni ekugcineni noma ubukhulu bensimbi ezosetshenziselwa i-valve.
Izindinganiso ezinjalo ziletha ukuphepha ezinhlelweni zokusebenza.Kuvame ukwanda kwezinga lokushisa kanye nokucindezela lapho usebenzisa ama-valve e-throttling.Ngalokho, kubalulekile ukuqonda izindinganiso ezinjalo ukuze kuphephe wonke umuntu.

Ngokufigqiwe

Nakuba ama-valve amaningi enekhono elilinganiselwe lokudonsa, umuntu akamane awasebenzise kanjalo.Ukuze i-valve ihlale isikhathi eside, kungcono ukwazi ukuthi yiluphi uhlobo lwe-valve olufanele isicelo esithile sokudonsa.
Isisetshenziswa somkhiqizi wamavalvu ayinkomba: Umhlahlandlela Wokugcina: Abakhiqizi Bamavalvu Abangcono Kakhulu e-China