Ukwahlula kunye nokusetyenziswa kweevalvu zokutshekisha
Ivalve yokutshekisha ibhekisa kwindawo yokuvula kunye nokuvala ivalve engqukuva kwaye ixhomekeke kubunzima bazo kunye noxinzelelo lwemidiya ukuvelisa isenzo sokuvala umva ophakathi wevalve.Ivalve yokukhangela yivalve ezenzekelayo, ekwabizwa ngokuba yivalve yokutshekisha, ivalve yendlela enye, ivalve engabuyiyo okanye ivalve yokuzahlula.
Intshukumo ye-Flap yahlulwe yabaphakamisa ivalve yokujongakwayeivalve yokujonga ujingi.Ivalve yokukhangela yokuphakamisa kunye nesakhiwo sevalve yeglowubhu iyafana, kuphela ukungabikho kwesikhondo sevalve ukuqhuba i-valve flap.Indawo ephakathi ukusuka kwicala lokungena (icala elisezantsi) ukungena, ukusuka kwicala lokuphuma (icala eliphezulu) ukuphuma.Xa uxinzelelo lwe-inlet lukhulu kunobunzima be-valve flap kunye nokumelana nokuhamba kwayo kwaye xa i-valve ivuliwe.Ngokwahlukileyo, i-valve ivaliwe xa i-medium ihamba ngasemva.I-valve yokukhangela i-swing ine-slant kwaye inokujikeleza kwi-axis ye-valve flap, umgaqo osebenzayo ufana ne-valve yokukhangela i-lift.Iivalvu zokukhangela zidla ngokusetyenziswa njengevalve esezantsi yesixhobo sokumpompa, esinokuthi sithintele ukuphuma kwamanzi ngasemva.Iivalvu zokujonga kunye neevalvu zeglowubhu ezisetyenziswe ngokudibeneyo, zinokudlala indima ekhuselekileyo yokuzahlula.Izinto ezingeloncedo kukuxhathisa okuphezulu kunye nokutywinwa okungahambi kakuhle xa kuvaliwe.
Okokuqala, ivalve yokukhangela iphakamisa iqulethe iindidi ezimbini ezithe nkqo nezithe tye.
Ubume bomzimba wevalvu yevalve yokuphakamisa ifana naleyo yevalve yeglowubhu, ngoko inokumelana okukhulu nolwelo.Isilayidi sevalve sityibilika ecaleni komgca othe nkqo osembindini womzimba wevalvu.Xa i-medium ihamba, i-flap yevalve ivulwa ngokutyhala okuphakathi, kwaye xa i-medium iyeka ukuhamba, i-flap yevalve ibekwe kwisitulo sevalve ngokuzixhoma.
Ivalve yokujonga yokunyusa eme nkqo.Umzila ophakathi wokungena kunye ne-outlet channel kunye ne-valve seat channel direction iyafana, ukuchasana nokuhamba kuncinci kunohlobo oluthe ngqo.Ivalve yokukhangela yokunyusa eme nkqo ifakwe kumbhobho othe nkqo.ngokusebenzisa ivalve yokukhangela yokuphakamisa inokufakwa kuphela kumbhobho othe tye.Ithintelwe ngeemfuno zofakelo, ezisetyenziswa ngokuqhelekileyo kwiimeko ezincinci ze-diameter DN <50.
Okwesibini, i-disc yevalve yokutshekisha ikwimo ejikelezayo kwaye ijikeleza i-axis yesitulo sesitulo sevalve.
Ngenxa yeshaneli elungelelanisiweyo ngaphakathi kwevalve, ukuchasana kokuhamba kuncinci kunoko kwe-valve yokukhangela i-valve.Ifanelekile kwimibhobho encinci kunye nephakathi, i-low-pressure, kunye ne-diameter enkulu (izinga lokuhamba okuphantsi kunye neemeko ezinkulu zobubanzi apho ukuhamba kungatshintshi rhoqo).Ukusebenza kokutywinwa akulunganga njengohlobo lokuphakamisa.
Iivalve zokujonga ujingi zahlulwe zaba ziindidi ezintathu: idiski enye, idiski ephindwe kabini, kunye nediski eninzi.Ezi ntlobo zintathu zihlelwa ikakhulu ngokwedayamitha yevalvu, ukuze kuthintelwe ukothuka kwehydraulic xa i-medium iyeka ukuqukuqela okanye iqukuqela ngasemva.Iivalvu zokujonga idiskhi enye zifanelekile ngokubanzi kwizicelo zomgangatho ophakathi.Xa usebenzisa idiskhi enye yokujonga ivalve yokujonga ujingi kwimibhobho yobubanzi obukhulu, kungcono ukusebenzisa ivalve yokujonga ukuvala kancinane enokunciphisa uxinzelelo lwehamile yamanzi ukuze kuncitshiswe uxinzelelo lwehamile yamanzi.Iivalvu zokujonga idiskhi kajingi zilungele imibhobho emikhulu nephakathi.I-valve yokujonga i-disc ene-disc enesakhiwo esincinci kunye nobunzima obulula yivalve yokujonga ngokukhawuleza;Iivalvu zokujonga idiskhi ezininzi zilungele imibhobho emikhulu yobubanzi.Indawo yokufakela i-valve yokukhangela i-swing ayikhawulelwanga, kwaye inokufakwa kwiipayipi ezithe tye, ezithe nkqo, okanye ezithambekileyo.
Okwesithathu, ivalve yokukhangela ibhabhathane: uhlobo oluthe ngqo.
Ubume bevalve yokukhangela ibhabhathane iyafana nevalve yebhabhathane.Isakhiwo sayo silula, ukuchasana nokuhamba okuncinci, uxinzelelo lwehamile yamanzi luncinci.I-valve flap ijikeleza i-pin kwisihlalo sevalve yevalve yokutshekisha.Ivalve yokuhlola uhlobo lweDisc inesakhiwo esilula, inokufakwa kuphela kumbhobho othe tye, ukutywinwa kubi.
Okwesine, i-valve yokukhangela i-diaphragm: kukho iindidi ezahlukeneyo zesakhiwo, zonke zisebenzisa i-diaphragm njengeendawo zokuvula kunye nokuvala.
Ngenxa yokusebenza kwehamile yamanzi, isakhiwo esilula, ixabiso eliphantsi, kwiminyaka yamuva nje ukuphuhliswa ngokukhawuleza, i-valve yokukhangela i-diaphragm isetyenziswa ngokubanzi.Kodwa ukusetyenziswa kwe-diaphragm yokujonga ubushushu bevalve kunye noxinzelelo ngezithintelo zezinto ze-diaphragm.Ivalve yokukhangela i-diaphragm ilungele ukuvelisa impembelelo yamanzi kumbhobho, i-diaphragm inokuba yinto enhle kakhulu ukuphelisa i-medium ngokuchasene nokuhamba kwamanzi aveliswa yimpembelelo, isetyenziswa ngokubanzi kwimibhobho yobushushu obuphantsi koxinzelelo, ngakumbi ifanelekile. imibhobho yamanzi, ubushushu bokusebenza ngokubanzi kwi-medium kwi -12 - 120 ℃ phakathi koxinzelelo lokusebenza <1.6MPa, kodwa ivalve yokukhangela i-diaphragm inokwenziwa ukufezekisa i-calibre enkulu, ubuninzi bunokufikelelwa kwi-DN 2000mm okanye Kaninzi!Nangona kunjalo, i-valve yokujonga i-diaphragm ingaba yi-caliber enkulu, i-DN inokufikelela kwi-2000mm okanye ngaphezulu.
