Umnqopho wokusebenzisa ivalvu yokuhlola kukhandela ukugeleza okubuyela emuva kwe-medium, begodu ivalvu yokuhlola ivamise ukufakwa ekuphumeni kwepompo. Ukungezelela, i-valve yokuhlola kufanele ifakwe ekuphumeni komtjhini wokugandelela. Ngamafuphi, ukwenzela ukukhandela ukugeleza okubuyela emuva kwe-medium, i-valve yokuhlola kufanele ifakwe emtjhinini, esisetjenzisweni nofana epayipini.
Ngokuvamileko, amavalvu wokuhlola ukuphakamisa athe ngqo asetjenziswa emaphayiphini avundlileko anobubanzi obungu-50mm. Ivalvu yokuhlola i-lift eqondileko ingafakwa emapayipini avundlileko najameleko. Ivalvu engezansi ivamise ukufakwa kwaphela ephayiphini ethe ngqo yendawo yokungena yepompo, begodu umtjhini ophakathi ugeleza ukusuka phasi ukuya phezulu.
I-swing check valve ingenziwa ibe mfutho wokusebenza ophezulu khulu, i-PN ingafikelela ku-42MPa, begodu i-DN nayo ingenziwa ibe yikulu khulu, ubukhulu bungafinyelela ngaphezu kwe-2000mm. Ngokuya ngezinto ezihlukahlukeneko zegobolondo nesivalo, ingasetjenziswa kiyo nanyana ngiyiphi indlela yokusebenza nanyana ngiyiphi izinga lokutjhisa lokusebenza. Indawo le ngamanzi, umtjhiso, irhasi, indawo ebolako, amafutha, ukudla, imithi, njll. Izinga lokutjhisa lokusebenza lendawo liphakathi kuka--196~800℃.
Indawo yokufaka i-swing check valve ayikhawulelwe, ivamise ukufakwa ephayiphini evundlileko, kodwana ingafakwa ephayiphini ejame ngqo nofana ephayiphini etjhingako.
Isikhathi esisebenzako se-valve yokuhlola ye-butterfly sigandelelo eliphasi kanye nobubanzi obukhulu, begodu isikhathi sokufaka silinganiselwe. Ngombana umfutho wokusebenza wevalvu yokuhlola ye-butterfly awukwazi ukuba phezulu khulu, kodwana ububanzi obubizwako bungaba bukhulu khulu, obungafinyelela ngaphezu kwama-2000mm, kodwana umfutho oqanjiweko ungaphasi kwe-6.4MPa. Ivalvu yokuhlola ye-butterfly ingenziwa ibe mhlobo we-wafer, evamise ukufakwa hlangana namafletjhi amabili wepayipi ngendlela yokuthintana kwe-wafer.
Indawo yokufaka i-butterfly check valve ayikhawulelwe, ingafakwa ephayiphini evundlileko, epayipini ejame ngqo nofana ephayiphini etjhingako.
Ivalvu yokuhlola i-diaphragm ilungele amapayipi athandwa yisando samanzi. I-diaphragm ingaqeda kuhle isando samanzi esibangelwa kugeleza okubuyela emuva kwe-medium. Njengombana amazinga womtjhiso wokusebenza kanye nomfutho wokusebenza wamavalvu wokuhlola i-diaphragm kukhawulelwe zizinto ze-diaphragm, avamise ukusetjenziswa emaphayiphini anomfutho ophasi kanye namazinga womtjhiso ajayelekileko, khulukhulu emaphayiphini wamanzi wempompi. Ngokuvamileko, amazinga womtjhiso wokusebenza we-medium aphakathi kwama-20~120°C, begodu umfutho wokusebenza ungaphasi kwe-1.6MPa, kodwana i-diaphragm check valve ingafinyelela ububanzi obukhulu, begodu i-DN ephezulu ingaba ngaphezu kwe-2000mm.
Ivalvu yokuhlola i-diaphragm isetjenziswe khulu eminyakeni esanda kwedlula ngebanga lokusebenza kwayo okuhle khulu, isakhiwo esilula kanye neendleko eziphasi zokukhiqiza.
Ivalvu yokuhlola ibholo inokusebenza okuhle kokuvala, ukusebenza okuthembekileko nokujamelana kuhle nesando samanzi ngombana isivalo siyindilinga embozwe ngerabha; begodu ngombana isivalo singaba yibholo yinye nofana amabholo amanengi, singenziwa sibe nobubanzi obukhulu. Kodwana, isivalo sayo siyindilinga evulekileko embozwe ngerabha, engakalungeli amapayipi anegandelelo eliphezulu, kodwana ilungele amapayipi anegandelelo eliphakathi neliphasi kwaphela.
Njengombana igobolondo le-valve yokuhlola ibholo ingenziwa ngensimbi engagqwali, begodu isiyingi esivulekileko se-seal singambozwa ngeplastiki yobunjiniyela be-PTFE, ingasetjenziswa godu emaphayiphini anemidiya evuthako.
Izinga lokutjhisa lokusebenza kwalolu hlobo lwevalvu yokuhlola liphakathi kuka-101~150°C, umfutho oqakathekileko u-≤4.0MPa, begodu ububanzi obuqakathekileko buphakathi kuka-200~1200mm.
Isikhathi sokuposa: Mar-23-2022
