Ivalve yokulawulaimbali yophuhliso elawula iindawo zofakelo lwevalvu intshayelelo emfutshane
1. Ukuphuhliswa kweevalve zokulawula kuhambelana ngokusondeleyo nophuhliso lweenkqubo zokuvelisa i-industrial.
Mandulo, ukuze kulawuleke ukuhamba kwamanzi emilanjeni okanye emilanjeni, abantu babesebenzisa amatye amakhulu okanye izikhondo zemithi ukunqanda ukuphuma kwamanzi okanye ukuguqula icala lokuqukuqela kwamanzi.
Impucuko yaseYiputa neyamaGrike yenze iindidi ezininzi zeevalvu zamandulo, ezisetyenziselwa ukunkcenkceshela izityalo, phakathi kwezinye izinto.
Nangona kunjalo, kuyavunywa ngokubanzi ukuba amaRoma amandulo aphuhlisa inkqubo yamanzi entsonkothileyo yokunkcenkceshela izityalo, eneplagi kunye neevalvu zeplunger kunye nokusetyenziswa kweevalvu zokutshekisha ukuthintela ukuhamba kwamanzi ngokuchasene nomva.
Ngexesha le-Renaissance, amagcisa kunye nabaqambi. I-LeonardodaVinc yenzelwe iivalve zemisele, iiprojekthi zokunkcenkceshela kunye nezinye iinkqubo ezinkulu zehydraulic, kwaye uninzi lwezisombululo zakhe zobugcisa zisekhona nanamhlanje.
Imbali yanamhlanje yoshishino lwevalvu ihambe kunye neshishini. Ngokuhamba phambili kweshishini, uThomasNewcomen wasungula injini yomphunga kwidesika yangaphambili ngo-1705, efuna ukulawula ukusebenza kwe-injini yomphunga. UJamesWatt wenza isilawuli sokulungelelanisa isantya ngedesika yangaphambili. Abantu abaninzi ngakumbi banikela ingqalelo kulawulo lokuhamba kolwelo.
Umlawuli wokuqala wayengumlawuli wempompo eyenziwe nguWilliamFisher ngowe-1880. Xa uxinzelelo emva kwe-valve lwanda, ukuvulwa komlawuli kwancitshiswa phantsi kwesenzo sesando esinzima, ukuze kufezekiswe umphumo wokulawula uxinzelelo oluzinzile.
Ngenkulungwane yama-20 ukuya koo-1930, ukumila komzimba kwevalve elawulayo yevalve engqukuva engqukuva (b>
I-40's ifanelekile kuxinzelelo oluphezulu lwe-Angle elawula ivalve (i-anglev>
I-50 ~ 60 s ivele ivelufa elawula iindlela ezintathu (indlela ezintathuv>
Kwi-70′s ivelufa yokulawula imikhono isetyenziswa ngokubanzi kulawulo lwenkqubo yokuvelisa kwimizi-mveliso, ivalve ye-eccentric ejikelezayo ephuhlisiwe yi-eccentricplugv>
Ivalve ye-Eccentric ejikelezayo inotywino oluhle, umthamo omkhulu wokuqukuqela, ingasetyenziswa kwiimeko ezinkulu zoxinzelelo.
Ukususela ekuqaleni kwe-80's, kwazalwa iintlobo ezahlukeneyo zevalve yokulawula encinci, eyenza ubunzima kunye nokuphakama kwevalve elawulayo yehla kunye nokuphucula umthamo.
Ukusukela ekuqaleni kweminyaka yoo-1990, ngokusetyenziswa okubanzi kwezixhobo zolawulo lwekhompyuter, iimfuno zeevalvu zokulawula ezikrelekrele ziya zisiba qatha ngakumbi, kwaye ziye zazalwa iintlobo ngeentlobo zevalvu yombane ekrelekrele yokubeka ivalvu kunye neevalvu zebhasi ezilawulayo ezinendawo ekrelekrele.
Ekuqaleni kwekhulu le-2l, i-valve yokulawula i-fieldbus isetyenzisiwe, kunye nentshukumo ehlayo yomsebenzi wokulawula, imfuno yokulawula i-valve iphezulu kwaye iphezulu.
Ukuphuhliswa kwevalve elawulayo kunye nolawulo lwenkqubo yoshishino lwenziwa ngokuhambelanayo.
Ukuze kuphuculwe umgangatho wolawulo lwenkqubo yolawulo, iimfuno eziphezulu zibekwe phambili kwicandelo ngalinye lenkqubo yolawulo.
Ngokomzekelo, izinto zokubona kunye nabathumeli bafuna ukuchongwa okuphezulu kunye nokuchaneka kokuhanjiswa, ukuphendula ngokukhawuleza kunye nokuzinza okuphezulu kwedatha; Umlawuli kunye nezinye i-actuators zifuna indawo encinci efileyo kunye ne-friction, ukuphindaphinda okungcono kunye nexesha elifutshane lokuphendula, kwaye unokubonelela ngembuyekezo yeempawu ezingabonakaliyo zokuhamba kwento.
Kwangaxeshanye, ngenxa yenkqubo yemveliso yemizi-mveliso emikhulu kunye nelungileyo, umlawuli njalo njalo ubeka phambili iimfuno eziphezulu.
Amanqaku aphambili okulungelelanisa ukufakwa kwevalve aziswa ngokufutshane
Ziziphi iindlela zokufakela ezichanekileyo zokulungelelanisa iindawo zokufakela i-valve, ezinokuphucula ukusebenza kakuhle kwevalve kunye nokunciphisa ukunxiba kwevalve? Oku kulandelayo kukwaziswa kwamanqaku aphambili okulungelelaniswa kofakelo lwevalvu kwireferensi yakho. I-1) Isikhundla sofakelo, ukuphakama, indawo yokungena kunye nesikhokelo sokuphuma kufuneka sihlangabezane neemfuno zoyilo, kwaye uxhulumaniso kufuneka luqine kwaye luqine. 2) Umqheba wazo zonke iintlobo zeevalvu zezandla ezifakwe kumbhobho wokugquma we-thermal awuyi kuthoba. 3) Ivalve kufuneka ihlolwe ngaphambi kokufakwa. I-nameplate yevalve kufuneka ihambelane nomgangatho welizwe langoku "i-Universal Valve Mark" GB 12220. Kwi-valve esebenza ngoxinzelelo olukhulu kune-1.0MPa kwaye idlala indima yokusika kumbhobho oyintloko, amandla kunye novavanyo oluqinileyo kufuneka luqhutywe. ngaphandle phambi kofakelo, kwaye ivalve efanelekileyo ingasetyenziswa. Uvavanyo lwamandla, uxinzelelo lovavanyo luyi-1.5 amaxesha oxinzelelo oluncinci, ubude bexesha alikho ngaphantsi kwe-5min, igobolondo yevalve, ukupakisha kufuneka ifaneleke ngaphandle kokuvuza. Uvavanyo lokuqina, uxinzelelo lovavanyo ngamaxesha e-1.1 yoxinzelelo lwegama; Uxinzelelo lovavanyo ngexesha lovavanyo kufuneka luhlangabezane neemfuno zomgangatho we-GB 50243, kwindawo yokutywina idiskhi akukho kuvuza njengoko kufanelekile.
Ixesha lokuposa: Dec-05-2022
