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:
• Ngokusondeleyo kumgca - 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.
• Ukuvula ngokukhawuleza - Olu phawu lokuhamba lubonakaliswa xa kusetyenziswa iivalve zebhabhathane ezihlalayo.Isantya sokuhamba kwamanzi siphezulu xa idiski ihamba ukusuka kwindawo evaliweyo.Njengoko i-valve isondela kwindawo evuleke ngokupheleleyo, ukuhamba kwehla ngokuthe ngcembe kunye notshintsho oluncinci.
• I-Flow Isolation – 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:
• Ulwakhiwo olukhaphukhaphu nolubambeneyo—Iivalvu zebhabhathane zisebenzisa iidiski zentsimbi ezicekethekileyo njengendlela yokulawula ukuqukuqela. Iidiski zincinci kwaye zithatha indawo encinci, kodwa zomelele ngokwaneleyo ukulawula ukuhamba kwamanzi. kwiinkqubo zombhobho kwiindawo ezimxinwa.Iibhobho ezinobubanzi obukhulu zifuna iivalvu ezinkulu zisebenzisa imathiriyeli eyongezelelekileyo, ukunyuka kweendleko.Ivalve yebhabhathane iya kuba nexabiso eliphantsi kunevalve yebhola enobungakanani obufanayo kuba isebenzisa izinto ezincinci ukuvelisa.
• Utywino oluKhawulezayo noluSebenzayo – Izivalo zebhabhathane zitywina ngokukhawuleza xa zisebenza, nto leyo ezenza zibe zezilungele ukuqukuqela okuchanekileyo kwenkqubo. 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.
• Ukwehla koxinzelelo oluphantsi kunye nokuBuyiselwa koxinzelelo oluphezulu - Iivalve zebhabhathane zinexinzelelo oluphantsi nangona idiski ihlala ikhona kulwelo.Uxinzelelo oluphantsi loxinzelelo lubalulekile ekulawuleni ukumpompa kunye neemfuno zamandla zenkqubo.Iivalve zebhabhathane zenzelwe ukuvumela 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 ukucinezela phakathi kweeflange zemibhobho ekufutshane.Akukho nkqubo yofakelo inzima yokufakela. ezifana nokuwelda iyafuneka.
• Umsebenzi olula – Ngenxa yobukhulu bawo obubambeneyo kunye nobunzima obulula, iivalve zebhabhathane zifuna itorque encinci ukusebenza. 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 ukwakhiwa kwe-debris ejikeleze i-valve, ukwandisa amandla okwenza i-cavitation. Iivalvu zebhola yenye indlela yokusetyenziswa kwamanzi efuna izibuko ezipheleleyo.
• Ukutya okukhawulezileyo kwiinkonzo zolwelo lwe-viscous – ulwelo lugungxula izivalo zebhabhathane njengoko zihamba kuzo.Ekuhambeni kwexesha, iidiski ziye ziwohloke kwaye azikwazi ukubonelela ngesitywina.Amazinga okubola aya kuba phezulu ukuba uphatha iinkonzo ze-viscous fluid.Isango kunye nevalve yebhola inomhlwa ongcono ukuxhathisa kuneevalve zebhabhathane.
• Ayifanelekanga kuxinzelelo oluphezulu lwe-throttling - ivalve kufuneka isetyenziswe kuphela ukugoba kwizicelo zoxinzelelo oluphantsi, ezilinganiselweyo ukuya kuma-degrees angama-30 ukuya kuma-80 okuvulwa.
I-valve flap kwindawo evuleke ngokupheleleyo ithintela ukucocwa kwenkqubo kwaye inqande ukugquma komgca oqulethe i-valve butterfly.
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, ucoce iipayipi kwaye ukhangele iiflanges zokukhanya / ukuhla.Qinisekisa ukuba imibhobho ihambelana.Xa ufaka i-valve, gcina i-disc kwindawo evulekileyo. imingxuma okanye izilingi ezijikeleze umzimba wevalve xa uphakamisa okanye uhambisa ivalve.Kuphephe ukuphakamisa ivalve kwi actuator okanye kumqhubi wayo.
Ukulungelelanisa i-valve kunye nebholi yokufaka yombhobho okufutshane.Qinisa iibholithi ngesandla, emva koko sebenzisa i-torque wrench ukuqinisa iibholithi ngokucothayo nangokulinganayo, uqikelele ukucoceka phakathi kwabo 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 le-automation efunekayo.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.Ngolunye ulwazi, tyelela iValveman.com.
Ixesha lokuposa: Apr-14-2022
