1. Ukukhethwa kwevalve yesango
Ngokuqhelekileyo, iivalve zesango kufuneka zikhethwe.Iivalve zesango azifanelekanga kuphela kwi-steam, i-oyile kunye neminye imithombo yeendaba, kodwa kunye ne-medium equkethe i-granular solids kunye ne-viscosity enkulu, kwaye ifanelekile kwi-vent kunye ne-vacuum system valves.Kwimidiya enamasuntswana aqinileyo, umzimba wevalvu yesango uya kuba nomngxuma omnye okanye emibini yokucoca.Kwiqondo eliphantsi lokushisa, kufuneka kukhethwe ivalve ekhethekileyo yobushushu obuphantsi.
2. Inkcazo yokukhethwa kwevalve yeglowubhu
Ivalve yeglowubhu ilungele iimfuno zokuxhathisa ulwelo lombhobho, oko kukuthi, ilahleko yoxinzelelo ayiqwalaselwa, kunye nobushushu obuphezulu, umbhobho ophakathi woxinzelelo oluphezulu okanye isixhobo, esilungele i-DN <200mm umphunga kunye neminye imibhobho yemidiya;Iivalve ezincinci zinokukhetha ivalve yeglowubhu, efana nevalve yenaliti, ivalve yesixhobo, ivalve yesampula, ivalve yegeyiji yoxinzelelo, njl. njl. , kufuneka ukhethe ivelufa yeglowubhu okanye ivalve ye-throttle;Kwindawo enetyhefu kakhulu, kufanelekile ukukhetha ivalve yeglowubhu etywiniweyo;Nangona kunjalo, ivalve yeglowubhu akufuneki isetyenziselwe i-medium ne-viscosity enkulu kunye ne-medium equkethe amasuntswana ekulula ukuwa, kwaye akufuneki isetyenziselwe ivalve yokukhupha umoya kunye nevalve yevacuum ephantsi.
3, Byonke imiyalelo yokukhetha ivalve
I-valve yebhola ifanelekile kwiqondo lokushisa eliphantsi, uxinzelelo oluphezulu, i-viscosity ye-medium.Uninzi lweevalvu zebhola zingasetyenziswa kunye namasuntswana aqinileyo amisiweyo phakathi, ngokweemfuno zezinto zokutywina zingasetyenziselwa umgubo kunye nemidiya yegranular;Ivalve yebhola yetshaneli epheleleyo ayifanelekanga kulawulo lokuhamba, kodwa ifanelekile kwizihlandlo ezifuna ukuvulwa nokuvala ngokukhawuleza, okulungele ukufezekiswa kokunqanyulwa kweengozi;Ngokwesiqhelo ekutywinweni okungqongqo, ukunxiba, ukushwabana kwetshaneli, ukuvula kunye nokuvala isenzo ngokukhawuleza, ukunqunyulwa koxinzelelo oluphezulu (umahluko woxinzelelo), ingxolo ephantsi, into yegesi, i-torque encinci yokusebenza, ukuxhathisa ulwelo oluncinci kumbhobho, kucetyiswa ukusetyenziswa kwevalve yebhola. ;Ivalve yebhola ifanelekile kwisakhiwo sokukhanya, ukunqunyulwa koxinzelelo oluphantsi, imidiya eyingozi;Ivalve yebhola okanye ubushushu obuphantsi, i-cryogenic medium yeyona valve ifanelekileyo, inkqubo yemibhobho ephantsi yobushushu obuphantsi kunye nesixhobo, kufuneka isetyenziswe kunye nesigqubuthelo sevalve ivelufa yebhola ephantsi yobushushu;Ukukhethwa kwezinto zokuhlala zevalve yebhola edadayo kufuneka kuqhutywe ibhola kunye nomthwalo ophakathi osebenzayo, ivalve yebhola edayamitha enkulu esebenzayo ifuna amandla amakhulu, i-DN≥200mm ivelufa yebhola kufuneka ikhethwe ifom yokuhambisa igiya yeentshulube;Ivalve yebhola esisigxina ifanelekile kubukhulu obukhulu kunye nezihlandlo zoxinzelelo oluphezulu;Ukongeza, ivalve yebhola esetyenziselwa inkqubo yezinto ezinobuthi kakhulu, umbhobho ophakathi ovuthayo, kufuneka ube nesakhiwo somlilo, esichasene ne-static.
4, Timiyalelo yokukhetha ivalve ye-hrottle
I-valve ye-Throttle ifanelekile kwiqondo lokushisa eliphakathi liphantsi, iimeko zoxinzelelo oluphezulu, zilungele imfuneko yokulungelelanisa ukuhamba kunye neengxenye zoxinzelelo, ayifanelekanga i-viscosity kwaye iqulethe iincinci eziqinileyo ze-medium, kungekhona njenge-valve yokwahlula.
5, Pimiyalelo yokukhetha ivalve yelug
Ivalve yeplagi ilungele ukuvulwa ngokukhawuleza kunye nezihlandlo zokuvala, ngokuqhelekileyo ayifanelekanga kwi-steam kunye neqondo lokushisa eliphakathi, kwiqondo lokushisa eliphantsi, i-viscosity medium, ifanelekile kwi-medium kunye namasuntswana amisiweyo.
6, Bimiyalelo yokukhetha ivalve ephumayo
Ivalve yebhabhathane ifanelekile kwidayamitha enkulu (efana ne-DN>600mm) kunye neemfuno zobude besakhiwo esifutshane, kunye nemfuno yolawulo lokuqukuqela kunye nokuvulwa ngokukhawuleza kunye neemfuno zokuvala zesiganeko, ezisetyenziselwa ubushushu ≤80℃, uxinzelelo ≤1.0MPa amanzi, ioli kunye nomoya ocinezelweyo kunye nezinye imidiya;Xa kuthelekiswa nezivalo zesango kunye neebhola zebhola, iivalve zebhabhathane zifanelekile kwiinkqubo zemibhobho kunye neemfuno zokulahleka koxinzelelo lwe-lax.
7, Cimiyalelo yokukhetha ivalve heck
Iivalve zokuhlola zifanelekile ngokubanzi kwimidiya ecocekileyo, kungekhona kwimidiya equkethe amaqhekeza aqinileyo kunye ne-viscosity.Xa i-DN≤40mm, sebenzisa i-valve yokuphakamisa yokukhangela (ivunyelwe kuphela ukuba ifakwe kwimibhobho ethe tye);Xa i-DN = 50 ~ 400mm, kuyafaneleka ukusebenzisa i-valve yokukhangela i-swing yokuphakamisa (kwimibhobho ethe tyaba kunye nethe nkqo ingafakwa, njengokufakwa kumbhobho othe nkqo, ukuhamba okuphakathi ukusuka ezantsi ukuya phezulu);Xa i-DN≥450mm, ivalve yokukhangela uhlobo lwe-buffer kufuneka isetyenziswe;Xa i-DN = 100 ~ 400mm inokukhetha kwakhona ivalve yokujonga i-wafer;I-valve yokujonga i-Swing ingenziwa ngoxinzelelo oluphezulu lokusebenza, i-PN ukuya kwi-42MPa, ngokutsho kwegobolondo kunye nezinto zokutywina zingasetyenziswa kuyo nayiphi na i-medium kunye naluphi na uhlobo lweqondo lokushisa.Phakathi ngamanzi, umphunga, igesi, i-corrosive medium, i-oyile, amayeza, njl.
8, Dimiyalelo yokukhetha ivalve ye-iaphragm
Ivalve ye-diaphragm ilungele ubushushu bokusebenza bungaphantsi kwe-200 ℃, uxinzelelo lungaphantsi kwe-oyile ye-1.0MPa, amanzi, i-acidic medium kunye ne-medium suspended, ayifanelekanga kwi-solvents ye-organic kunye ne-oxidant medium;I-abrasive granular medium kufuneka ikhethe ivalve ye-weir diaphragm, ivalve ye-weir diaphragm kufuneka ibhekiselele kwitheyibhile yeempawu zayo;Ulwelo olubonakalayo, uludaka lwesamente kunye nemvula ephakathi kufuneka ikhethe ngokuthe ngqo kwivalve ye-diaphragm;Iivalvu ze-diaphragm akufanele zisetyenziswe kwimigca yevacuum kunye nesixhobo sokufunxa ngaphandle kokuba kucacisiwe.
Iivalvu ziyahluka kwisicelo, ukusebenza rhoqo kunye nenkonzo.Ukulawula okanye ukuphelisa nokuvuza okuncinci, iivalve zezona zixhobo zibalulekileyo nezibalulekileyo.Ukufunda ukukhetha ivalve efanelekileyo kubalulekile.
Ixesha lokuposa: Nov-19-2021