umgangatho ophezulu weflange udibaniso ivelufa butterfly

CTYPE html OLUNTU "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> Izivalo zebhabhathane zikhaphukhaphu, zincinci kwaye zikhaphukhaphu kunezinye iintlobo zeevalvu zokulawula, okwenza kube lolona khetho lufanelekileyo lokulawula ukuhamba kwizicelo ezininzi. Ngokwesiko, iivalve zebhabhathane eziqhelekileyo zisetyenzisiwe kwizicelo ezizenzekelayo zokuvula / ezivaliweyo kwaye zigqibelele kule ndima.Nangona kunjalo, ezinye iinjineli zizibona zingamkelekanga xa iza kulawulo lokuhamba kwindlela evaliweyo yelophu. Iivalve zebhabhathane zisebenzisa iidiski ezijikelezayo ukulawula ukuhamba ngemibhobho.Iidiski ngokuqhelekileyo zisebenza ngamadigri angama-90, ngoko ngamanye amaxesha zibizwa ngokuba ziivalve ze-angle rotary. Ngokuqhelekileyo, zisetyenziswa xa kuqwalaselwa uqoqosho.Xa kufuneka kuvalwe ngokungqongqo, iivalve zebhabhathane ezinezitywina ezithambileyo ze-elastomeric. kunye/okanye iidiskhi ezigqunyiweyo zingasetyenziselwa ukubonelela ngokusebenza okufunekayo.IiValufa zeButterfly eziSebenzayo eziPhakamileyo (HPBVs) - okanye iiValve ze-Double Offset - ngoku ziyimigangatho yoshishino lweevalvu zokulawula ibhabhathane kwaye zisetyenziswa ngokubanzi ekulawuleni ukubetha.Enza kakuhle kwizicelo kunye uxinzelelo oluthe gqolo luyehla okanye imijikelo yenkqubo ecothayo. Iinzuzo ze-HPBV ziquka indlela yokuhamba ethe tye, umthamo ophezulu, kunye nokukwazi ukudlula imidiya eqinileyo kunye ne-viscous ngokulula.Banexabiso eliphantsi kakhulu elifakwe kulo naluphi na uhlobo lwevalve, ngakumbi kwi-NPS 12 kunye nobukhulu obukhulu.Inzuzo yeendleko zabo zanda kakhulu. xa kuthelekiswa nezinye iindidi zeevalvu ngokobungakanani ngaphezu kwe-intshi ezili-12. Babonelela ngokusebenza kakuhle kokuvala kwiqondo lokushisa elibanzi kwaye bafumaneka kwiimpawu zomzimba ezahlukeneyo ezibandakanya i-wafer, i-lug kunye ne-double flanged.Zilula kakhulu ngobunzima kwaye zidibene ngakumbi kunezinye iintlobo zeevalve.Ngokomzekelo, i-ANSI ye-intshi eyi-12. Iklasi ye-150 ivalve yebhola ephindwe kabini ephindwe kabini inobunzima obuyi-350 yeeponti kwaye inobuso ngobuso obuyi-intshi ye-13.31, ngelixa i-12-intshi i-lug butterfly valve elingana nobunzima obungama-200 kuphela kwaye inobuso obuyi-3-intshi. Iivalve ze-Butterfly zinezithintelo ezithile ezenza ukuba zingakulungeli ukulawula ukuhamba kwezinye izicelo.Ezi zibandakanya amandla okunciphisa uxinzelelo olulinganiselweyo xa kuthelekiswa neevalvu zebhola zeglowubhu ezinesakhono esikhulu se-cavitation okanye i-flash evaporation. Ngenxa yokuba indawo enkulu yendawo yediski isebenza njenge-lever, isebenzisa amandla aguquguqukayo ophakathi ojikelezayo ukuya kwi-shaft drive, iivalve zebhabhathane eziqhelekileyo azisetyenziselwa ukusetyenziswa koxinzelelo oluphezulu. . Iivalvu zokulawula ibhabhathane ngamanye amaxesha zinokugqithiswa, ezinokuthi zibe nefuthe elibi kwinkqubo yokusebenza.Oku kusenokuba ngenxa yokusetyenziswa kweevalvu ezinobungakanani bomgca, ngakumbi iivalve zebhabhathane ezinomthamo ophezulu.Inokwandisa ukuguquguquka kwenkqubo ngeendlela ezimbini. Ivalve izuza kakhulu, ishiya ukuguquguquka okuncinci ekulungiseni isilawuli.Okwesibini, ivalve enkulu inokusebenza rhoqo kwiindawo ezivulekayo zevalve esezantsi, kwaye ukungqubana kwetywina kunokuba kukhulu kwivalve yebhabhathane. xa kujongwe ukonyuka kohambo lwevalvu, lo mcimbi ubaxa kakhulu ukuguquguquka kwenkqubo okunxulunyaniswa ne-friction-induced deadband. Izicacisi ngamanye amaxesha zisebenzisa iivalve zebhabhathane ukuba zibe noqoqosho okanye zilungele ubungakanani bomgca obunikiweyo kungakhathaliseki ukuba zithintelwe kangakanani na.Kukho umkhwa wokugqithisa iivalvu zebhabhathane ukuphepha ukuxina imibhobho, enokukhokelela kulawulo olubi lwenkqubo. Olona thintelo lukhulu lolona luhlu lolawulo lwe-throttle alukho banzi njengevalve yebhola okanye ivalve yebhola ecandiweyo. Ngokuqhelekileyo, i-loop ilula kakhulu ukulawula xa i-loop yokulawula isebenza ngendlela yomgca kwaye ukuzuza kwenkqubo kusondele kubumbano.Ngoko ke, inzuzo yenkqubo ye-1.0 iba yinjongo yokulawula i-loop elungileyo, kunye noluhlu olwamkelekileyo lwe-0.5 ukuya kwi-2.0 ( i4:1 uluhlu). Ukusebenza kuhle xa uninzi lwenzuzo yelophu ivela kumlawuli.Qaphela ukuba kwigophe lokuzuza kuMfanekiso 1, inkqubo yokuzuza iba phezulu kakhulu kummandla ongezantsi malunga ne-25% yohambo lwevalvu. Inzuzo yenkqubo ichaza ubudlelwane phakathi kokuphuma kwenkqubo kunye nokutshintsha kwegalelo.I-stroke apho inkqubo yokuzuza ihleli phakathi kwe-0.5 kunye ne-2.0 iyona ndlela yokulawula i-valve.Xa inkqubo yokuzuza ingekho kwi-0.5 ukuya kwi-2.0 uluhlu, ukusebenza kakubi okuguquguqukayo kunye ne-loop. Ukungazinzi kunokwenzeka. Uyilo lwediski yebhabhathane inefuthe elibalulekileyo ekuhambeni kwevalvu njengoko ivalve isuka ivaliwe iye kuvula.Iidiski ezineempawu zepesenti ezilinganayo zinokubuyekeza ngcono amathontsi oxinzelelo ahluka ngokuqukuqela.Ukulingana kweepesenteji izitrim ziya kubonelela ngeempawu zokuxhoma ezihambelanayo zokwehla koxinzelelo olwahlukeneyo, olunokuthi ilungile.Isiphumo sichaneke ngakumbi, umahluko omnye ukuya komnye phakathi kokuhamba kunye nohambo lwevalvu. Iivalve zebhabhathane zisandula ukuzisa iidiski ezineempawu zokuqukuqela ezilinganayo ngokwendalo.Oku kubonelela ngophawu lofakelo oluvumela inkqubo yofakelo ukuba ifumaneke kuluhlu olufunwayo lwe-0.5 ukuya ku-2.0 phezu koluhlu olubanzi lwe-stroke.Oku kuphucula kakhulu ulawulo lwe-throttle, ngakumbi kuluhlu lokuhamba olusezantsi. Olu luyilo lubonelela ngolawulo olulungileyo, kunye nenzuzo eyamkelekileyo ye-0.5 ukuya kwi-2.0, ukusuka malunga ne-11% evulekileyo ukuya kwi-70%, ukunyuka okuphindwe kathathu kuluhlu lolawulo xa kuthelekiswa ne-valve yebhabhathane yokusebenza ephezulu (HPBV) yobukhulu obufanayo. , iipesenti ezilinganayo zeediski zibonelela ngokuguquguquka kwenkqubo esezantsi ngokubanzi. Iivalve zeButterfly ezineempawu zepesenti ezilinganayo, ezifana ne-Control-Disk valve, zifanelekile kwiinkqubo ezifuna ukulawulwa kwe-throttling echanekileyo. Ukuba ivalve yebhabhathane ayisebenzi kakuhle, ukuyitshintsha nje ngevalve enobungakanani obufanelekileyo kuya kuyicombulula ingxaki.Ngokomzekelo, inkampani yephepha isebenzisa iivalve zebhabhathane ezimbini ezigqithise kakhulu ukulawula ukususwa kokufuma kwipulp.Zombini iivalve bezisebenza ngaphantsi kwe-20% ukuhamba, okubangelwa ukuguquguquka kwenkqubo ye-3.5% kunye ne-8.0%, ngokulandelanayo.Uninzi lobomi babo buchithwa kwimodi yezandla. Kwafakelwa iivalvu ezimbini ze-NPS 4 ze-Fisher Control-Disk butterfly ezine-digital valve controller.Ilophu ngoku iyasebenza kwimowudi ezenzekelayo ngokuguquguquka kwenkqubo ukusuka kwi-3.5% ukuya kwi-1.6% kwivalve yokuqala kunye ne-8% ukuya kwi-3.0% kwivalve yesibini ngaphandle. Naluphi na uhlengahlengiso olukhethekileyo lwelophu. Uxinzelelo lwamanzi olubi kunye nokulawulwa kokuhamba kwindlela yokupholisa yensimbi yentsimbi kubangele iimveliso ezingahambelaniyo.Ii-HPBV ezilithoba ezifakelweyo azikwazanga ukulawula ngokufanelekileyo ukuhamba kwamanzi njengoko kufuneka. Isityalo sasifuna ukufaka iivalve eziza kulawula ngcono inkqubo kwaye zifunekayo ukunciphisa iindleko zokufakela.Isityalo siza kuchitha i-$ 10,000 yokutshintsha umbhobho wevalve nganye ukutshintshela kwi-HPBV ukuya kwi-valve yebhola. ivelufa edibana nemilinganiselo yobuso ngobuso yeeHPBV zangoku. Ivalve yokulawula iDiski yavavanywa icala necala enye yeHPBVs ezisithoba ezikhoyo kwaye yasebenza ngokweemfuno ezichaziweyo.Iziko lomzi-mveliso lithathe indawo yeeHPBV ezisibhozo ezishiyekileyo kwisithuba sonyaka, nganye ixhotyiswe ngevalve yoLawulo-Diski, isusa isidingo. ukubuyisela i-90,000 yeedola zemibhobho yevalve yebhola ecandiweyo, kunye nevalve yebhola ixabisa malunga nama-25% ngaphezulu kwevalve yebhabhathane. Iivalve ze-Control-Disk zibonelela ngolawulo oluchanekileyo kwaye zinceda ukuphelisa ukuguquguquka kwimveliso yokugqibela.I-mill iqikelela ukufakwa kweevalvu ezilithoba ze-Control-Disk kuya kusindisa malunga ne-1 yezigidi zeedola ngonyaka. Xa kuthelekiswa noninzi lwezinye iindidi zevalvu, ii-HPBV ezineendawo zokubeka idijithali zineendleko eziphantsi zofakelo lokuqala kwaye, xa zilinganiswe ngokufanelekileyo, zibonelela ngoluhlu olwaneleyo lolawulo.Zinomthamo ophezulu kunye nezithintelo zokuhamba okuncinci. uluhlu, olufana neglowubhu okanye iivalvu zebhola, kwaye zithatha kuphela isithuba se-HPBV. Xa ukhetha iivalve, ngakumbi ii-HPBVs, qiniseka ukuba zibukhulu obuchanekileyo, ngaphandle koko zinokulawulwa ngesandla ligumbi lokulawula. Kwakhona kubalulekile ukuqwalasela isimbo sevalve, iimpawu zendalo kunye nobukhulu bevalve, eya kubonelela ngoluhlu olubanzi kakhulu lolawulo. isicelo. UMark Nymeyer ngumphathi wezonxibelelwano lwentengiso yehlabathi jikelele kwi-Emerson Automation Solutions, enoxanduva lokulawula izithuthi. Olu ayilodonga lokuhlawula. Olu ludonga lwasimahla.Asifuni ukungena kwindlela yenjongo yakho apha, ngoko ke kuthatha imizuzwana embalwa.