Iivalvu zebhabhathane zizixhobo zokulawula ukuqukuqela kwekota ezisebenzisa idiskhi yesinyithi ejikeleza kwi-axis yesiqu esisigxina. Ziivalvu ezikhawulezayo zokulawula ukuqukuqela ezivumela i-90 degrees of rotation ukuba ihambe ukusuka ekuvulekeni ngokupheleleyo ukuya kwindawo evaliweyo.
Xa i-disc i-perpendicular kwi-centerline yombhobho, i-valve isendaweni evaliweyo.Xa i-disc ihambelana ne-centerline yombhobho, i-valve iya kuvuleka ngokupheleleyo (ivumela ukuhamba kwamanzi amaninzi). indlela yokulawula (idiski) iphantse ilingane nobubanzi bangaphakathi bombhobho osecaleni.
Ezi zivalo ziza ngobukhulu obahlukeneyo kunye noyilo olumisela ukusebenza kwabo kwizicelo zenkqubo yoshishino; izicelo zevalvu yococeko; iinkonzo zomlilo; iinkqubo zokufudumeza, umoya, kunye ne-air conditioning (HVAC); kunye ne-slurries.Ukuthetha ngokubanzi, iivalve zebhabhathane zibalulekile kulawulo lokuhamba kunye nokuhlukaniswa kokuhamba.
Intshukumo yediski iqala, icotha okanye imise ukuhamba kolwelo.Izicelo ezifuna ukuchaneka okuphezulu zixhomekeke kwiivalvu zebhabhathane ezisebenzayo ezibeka iliso kwiimeko zemibhobho, ukuvula okanye ukuvala ivalve njengoko kuyimfuneko ukugcina umyinge wokuhamba okufanayo. enye yezi mpawu zokuqukuqela zilandelayo:
" Phantse umgca - umlinganiselo wokuhamba uhambelana nokunyakaza kwe-angular ye-disc. Ngokomzekelo, xa i-disc i-40% evulekileyo, ukuhamba kwe-40% yobuninzi. Olu phawu lokuhamba luqhelekileyo kwi-valve ye-butterfly ephezulu yokusebenza.
" Ukuvulwa ngokukhawuleza - Olu phawu lokuhamba lubonakaliswa xa kusetyenziswa i-valve ye-butterfly ehleliyo. Isantya sokuhamba kwamanzi siphezulu xa i-disc ihamba ukusuka kwindawo evaliweyo. Njengoko i-valve isondela kwindawo evulekile ngokupheleleyo, ukuhamba kwehla ngokukhawuleza kunye noshintsho oluncinci.
" Ukwahlulwa kokuhamba -Iivalvu zebhabhathane zinokubonelela ngenkonzo yokuvula/yokuvala ulwelo. Ukwahlulwa kokuhamba kuyafuneka nanini na indawo ethile yesixokelelwano semibhobho ifuna ukulungiswa.
Iivalve zebhabhathane zifanelekile kwizicelo ezahlukeneyo ngenxa yoyilo lwazo olukhaphukhaphu kunye nokusebenza ngokukhawuleza.Iivalve zebhabhathane ezithambileyo zilungele ubushushu obuphantsi, izicelo zoxinzelelo oluphantsi, ngelixa iivalve zebhabhathane ezihleli ngentsimbi zinesakhono sokutywina xa zibamba iimeko zolwelo olurhabaxa.Le nkqubo iyasebenza. kumaqondo obushushu aphezulu kunye noxinzelelo kwaye adlulisele viscous okanye ulwelo corrosive.Iinzuzo iivalvu butterfly ziquka:
"Iivalve zeButterfly ezikhaphukhaphu kunye nolwakhiwo oluncinci zisebenzisa iidiski zetsimbi ezicekethekileyo njengendlela yokulawula ukuhamba. Iidiski zincinci kwaye zithatha indawo encinci, kodwa zomelele ngokwaneleyo ukulawula ukuhamba kwamanzi. Ezi zivalo zinomzimba ohlangeneyo ozenza zilungele ukusetyenziswa kwimibhobho. Iinkqubo kwiindawo ezimxinwa.Iibhobho ezinobubanzi obukhulu zifuna iivalvu ezinkulu zisebenzisa imathiriyeli yokuyila, ukwandisa iindleko.Ivalve yebhabhathane iya kuba nexabiso eliphantsi kunevalve yebhola yobukhulu obufanayo kuba idla izinto ezincinci ukuvelisa.
Ukutywinwa ngokukhawuleza nokuSebenzayo - Iivalvu zebhabhathane zibonelela ngokutywinwa okukhawulezayo kwi-actuation, zizenza zilungele ukugeleza okuphezulu kwezicelo. iya kubonelela ngokutywinwa okwaneleyo kwezicelo zoxinzelelo oluphantsi - ukuya kuma-250 pounds nge-intshi yesikwere (psi) .I-valve yokuvala i-double offset inika ukutywinwa okugqwesileyo kweenkqubo ukuya kwi-1,440 psi.
" Uxinzelelo oluphantsi loxinzelelo kunye nokuBuyiselwa koxinzelelo oluphezulu - Iivalve ze-Butterfly zinexinzelelo oluphantsi nangona i-disc isoloko ikhona kwi-fluid. Uxinzelelo oluphantsi loxinzelelo lubalulekile ekulawuleni ukupompa kunye neemfuno zamandla zenkqubo. Ulwelo lokubuyisela amandla ngokukhawuleza emva kokuba luyishiyile ivalve.
"Iimfuno zogcino oluphantsi-Iivalvu zebhabhathane zineenxalenye zangaphakathi ezimbalwa. Azinazo iipokotho ezinokubamba ulwelo okanye inkunkuma, ngoko ke, zifuna ungenelelo logcino oluncinci.Ufakelo lwazo lulula njengoko lufuna ukudibanisa phakathi kweeflanges zemibhobho ekufutshane. ezifana nokuwelda iyafuneka.
"Umsebenzi olula - Ngenxa yobukhulu bawo obuncinci kunye nobunzima obulula, iivalve zebhabhathane zifuna i-torque encinci ukuba isebenze. Iidiski zetsimbi ezinqabileyo zisebenzisa umlinganiselo omncinci wamandla ukuze zinqobe ukuxhathisa ukukhuhla kwamanzi. ukubonelela nge-torque eyaneleyo yokusebenza kwabo.Oku kuguqulela kwiindleko zokusebenza eziphantsi - ii-activators ezincinci zisebenzisa amandla amancinci kwaye zixabisa ngaphantsi ukongeza kwi-valve.
" Ii-valve ze-Butterfly zithinteka kwi-cavitation kunye ne-blocked flow - kwindawo evulekileyo, i-valve ayinikezeli i-port epheleleyo. Ubukho be-disc kwindlela yokuhamba kwamanzi kwandisa i-debris ejikeleze i-valve, ukwandisa amandla okuba ne-cavitation. Iivalvu zebhola yenye indlela yokusetyenziswa kwamanzi efuna izibuko ezipheleleyo.
"Ukutya okukhawulezayo kwiinkonzo ze-viscous fluid - ulwelo olugungxula iivalve zebhabhathane njengoko zihamba phakathi kwazo. Ekuhambeni kwexesha, iidiski ziwohloka kwaye azikwazi ukubonelela ngetywina. Amazinga okonakala aya kuba phezulu ukuba uphatha iinkonzo ze-viscous fluid. Isango kunye neevalvu zebhola zine-corrosion engcono ukuxhathisa kuneevalve zebhabhathane.
" Ayifanelekanga kwi-high-high pressure throttling - i-valve kufuneka isetyenziswe kuphela ukugubungela kwizicelo zoxinzelelo oluphantsi, ezilinganiselwe kwii-degrees ezingama-30 ukuya kwii-80 zokuvula.
I-valve flap kwindawo evuleke ngokupheleleyo ithintela ukucocwa kwenkqubo kwaye inqande ukugquma komgca oqulethe ivalve yebhabhathane.
Indawo yofakelo lwevalve yebhabhathane idla ngokuba phakathi kwee-flanges.Iivalve zebhabhathane kufuneka zifakwe ubuncinane ezine ukuya ezintandathu iidayamitha zemibhobho ukusuka kwimibhobho yokukhupha, iingqiniba, okanye amasebe ukunciphisa iziphumo zesiphithiphithi.
Ngaphambi kofakelo, iipayipi zicocekile kwaye ukhangele iiflanges zokukhanya / ukuhla.Qinisekisa ukuba imibhobho ihambelana.Xa ufaka i-valve, gcina i-disc kwindawo evulekileyo.IiFlanges zingadinga ukwandiswa ukuze ugweme umonakalo kwindawo yokuhlala.Sebenzisa i-pilot. imingxuma okanye izilingi ezijikeleze umzimba wevalvu xa uphakamisa okanye uhambisa ivalve.Kuphephe ukuphakamisa ivalve kwi-actuator okanye kumqhubi wayo.
Lungelelanisa ivalve kunye nebholi yokufaka yombhobho osecaleni.Isandla qinisa iibholithi, emva koko sebenzisa isiklintshi setorque ukuqinisa iibholithi ngokucothayo nangokulinganayo ukuqikelela ukucoceka phakathi kwazo kunye neflange.Jika ivalve kwindawo evuleke ngokupheleleyo kwaye usebenzise I-torque wrench yokuqinisa iibholithi ukujonga ukuxinezeleka okulinganayo kwiibholithi.
Ukugcinwa kweevalvu kubandakanya ukuthambisa amacandelo omatshini, ukuhlolwa kunye nokulungiswa kwee-activators.Iivalvu ezifuna ukuthanjiswa kwamaxesha athile ziquka izixhobo ezifakwe igrisi.Igrisi eyaneleyo ye-lithium-based grease kufuneka isetyenziswe ngamaxesha acetyiswayo ukuze kuncitshiswe irusi kunye nokubola.
Kwakhona kubalulekile ukuhlola rhoqo i-actuator ukuchonga naziphi na iimpawu zokuguga okanye ukukhululeka koqhagamshelwano lombane, i-pneumatic okanye i-hydraulic enokuthi ichaphazele ukusebenza kwevalvu.
Ukongezelela, umsebenzisi kufuneka ahlambulule zonke iindawo zevalve yebhabhathane kunye ne-silicone-based lubricant.Isihlalo kufuneka sihlolwe naziphi na iimpawu zokugqoka kwaye zitshintshwe xa kuyimfuneko.Iidiski ze-valve ze-Butterfly ezisetyenziswa kwizicelo ezomileyo ezifana nenkonzo yomoya ecinezelweyo ifuna ukuthambisa. Iivalvu zebhabhathane ezijikeleza ngokungaqhelekanga kufuneka ziqhutywe kanye ngenyanga.
Ukukhetha iValve kunokubonakala ngathi kukhetho kunye nomsebenzi wokukhwelana, kodwa kukho iinkcukacha ezininzi zobugcisa ekufuneka ziqwalaselwe.Eyokuqala ibandakanya ukuqonda uhlobo lolawulo lwe-fluid olufunekayo kunye nohlobo lwenkonzo yamanzi. ezinye izinto ezikwaziyo ukumelana nomhlwa.
Abasebenzisi kufuneka baqwalasele umthamo, uxinzelelo kunye nokutshintsha kobushushu benkqubo yombhobho kunye nenqanaba lokuzenzekelayo elifunekayo.Ngelixa iivalve zebhabhathane ezisebenzayo zibonelela ngolawulo oluchanekileyo lokuhamba, zibiza kakhulu kunezo zisebenza ngesandla.Iivalve zebhabhathane azilawuleki kwaye aziboneleli. izibuko eligcweleyo.
Ukuba umsebenzisi akaqinisekanga malunga nokuhambelana kweekhemikhali zenkqubo okanye ukhetho lwe-actuation, inkampani ye-valve efanelekayo inokuncedisa ekuqinisekiseni ukhetho oluchanekileyo.
UGilbert Welsford Jr. ngumseki weValveMan kunye nesizukulwana sesithathu sosomashishini weValve.Ukufumana ulwazi oluthe kratya, tyelela iValveman.com.
Ixesha lokuposa: Mar-02-2022
