Umnqopho wokusebenzisaivalvu yokuhlolakukukhandela ukugeleza okubuyela emuva kwesilinganiso, begoduivalvu yokuhlolaivamise ukufakwa ekuphumeni kwepompo. Ngaphezu kwalokho,ivalvu yokuhlolaifakwe ekuphumeni komtjhini wokugandelela. Ngamafuphi, ukwenzela ukukhandela ukugeleza okubuyela emuva kwesilinganiso,amavalvu wokuhlolakufanele ifakwe eensetjenzisweni, eensetjenzisweni nofana emaphayiphini.
Ngokuvamileko, ukuphakamisa okujamelekoamavalvu wokuhlolazikhethwa emaphayiphini avundlileko anobubanzi obungu-50mm. Ukuphakama okuqondilekoamavalvu wokuhlolaingafakwa emigqeni evundlileko nemileko. Ivalvu yeenyawo ivamise ukufakwa kwaphela emgqeni othe ngqo wendawo yokungena yepompo, begodu umtjhini ophakathi ugeleza ukusuka phasi ukuya phezulu.
Iivalvu yokuhlola yokujingaingenziwa ngomfutho ophezulu wokusebenza, i-PN ifike ku-42MPa, begodu i-DN nayo ingaba yikulu khulu, ifike ku-2000mm. Ngokuya ngezinto ezenziwe ngendlu kanye nama-seal, nanyana ngiyiphi indlela yokusebenza nanyana ngiliphi izinga lokutjhisa lokusebenza lingasetjenziswa. Indawo le ngamanzi, umtjhiso, irhasi, indawo ebolako, amafutha, ukudla, imithi, njll. Izinga lokutjhisa lokusebenza lendawo liphakathi kuka-196~800°C.
Amavalvu wokuhlola ajikajikakozingafakwa eendaweni ezingapheliko begodu zivamise ukufakwa emigqeni evundlileko, kodwana zingafakwa emigqeni ejame ngqo nofana etjhingako.
Iivalvu yokuhlola ivivaneilungele ukugandeleleka okuphasi kanye nobubanzi obukhulu, begodu ubujamo bokufaka bulinganiselwe. Ngombana umfutho wokusebenza weivalvu yokuhlola ivivaneangeze yaba phezulu khulu, kodwana ububanzi obubizwako bungaba bukhulu khulu, bungafinyelela ngaphezu kwama-2000mm, kodwana umfutho oqanjiweko ungaphasi kwe-6.4MPa. Iivalvu yokuhlola ivivaneingenziwa ibe mhlobo we-pair clamp, evamise ukufakwa hlangana nama-flange amabili wepayipi, begodu yamukela indlela yokuhlanganiswa kwe-pair clamp.
Iivalvu yokuhlola ivivaneingafakwa endaweni engapheliko begodu ingafakwa emgqeni ovundlileko, othe ngqo nofana othambileko.
Idayaframuamavalvu wokuhlolazilungele amapayipi athambekele ekutheni kube nesando samanzi, begodu i-diaphragm ingaqeda kuhle isando samanzi lokha umkhathi ugelezela ngokuphikisana nokugeleza. Ngombana amazinga womtjhiso wokusebenza nokusebenzisa umfutho we-diaphragmamavalvu wokuhlolazilinganiselwe ziinsetjenziswa ze-diaphragm, zivamise ukusetjenziswa emaphayiphini wezinga lokutjhisa eliphasi, khulukhulu afanele amapayipi wamanzi. Ngokuvamileko, amazinga womtjhiso wokusebenza we-medium aphakathi kuka--20~120°C, begodu umfutho wokusebenza u-<1.6MPa, kodwana i-diaphragmivalvu yokuhlolaingafinyelela izinga elikhulu, begodu i-DN ingaba ngaphezu kwama-2000mm.
Idayaframuamavalvu wokuhlolazisetjenziswe khulu eminyakeni esanda kwedlula ngebanga lokusebenza kwazo okuhle khulu ukungangeni amanzi, isakhiwo esilula kanye neendleko eziphasi zokukhiqiza.
Ibholoivalvu yokuhlolangombana isivalo siyibholo embozwe ngerabha, njeke ukusebenza kokuvala kuhle, ukusebenza kuthembekile, begodu ukujamelana nokutjhwaba kwamanzi kuhle; Begodu ngombana isivalo singaba yibholo yinye, nofana singenziwa zibe ziibholo ezinengi, njeke singenziwa sibe bubanzi obukhulu. Kodwana, ukuvala kwayo ziinqhema ezinamagodi ezigcotjhwe ngerabha, ezingakalungeli amapayipi anegandelelo eliphezulu, zilungele amapayipi anegandelelo eliphakathi neliphasi kwaphela.
Njengombana izinto zokuhlala zebholoivalvu yokuhlolaingenziwa ngensimbi engagqwali, begodu ibholo evulekileko yesivalo ingagcotshwa ngeplastiki yobunjiniyela be-PTFE, ingasetjenziswa godu epayipini lemidiya yokubola jikelele.
Izinga lokutjhisa lokusebenza lomhlobo lo we-check valve liphakathi kwe--101~150°C, umfutho wayo oqakathekileko u-≤4.0MPa, begodu ububanzi obuqakathekileko buphakathi kuka-200~1200mm.
Isikhathi sokuposa: Apr-23-2023
