Njenge-valve esetshenziswa kakhulu, i-i-valve yebholafuthi iwuhlobo oluningi kakhulu lwe-valve.Izinhlobo ezehlukene zihlangabezana nohlelo lomsebenzisi ezikhathini ezihlukene ezimaphakathi, izindawo ezihlukene zezinga lokushisa kanye nezidingo zenqubo ehlukene enqubweni yangempela.Okulandelayo kwethula izici zamavalvu ebhola amaningana avamile njengama-valve ebhola antantayo, ama-valve ebhola angashintshi, ama-eccentric half ball valves, ama-valve ebhola amise okwe-V kanye nama-valve ane-fluorine yebhola.
Ngokuya ngesakhiwo nomsebenzi, ingahlukaniswa ibe:
1. Kunezinhlobo eziningana zama-valve ebhola.Ziyiniama-valve ebhola antantayo: Ama-valve ebhola antantayo asetshenziswa njengezimpawu futhi ibhola liyantanta.Isebenzisa ukucindezela kwendawo ephakathi ukusunduza ibhola ukuze ihambe ibanga bese incindezela isihlalo sevalvu esinwebekayo ukuze sifinyelele umphumela wokuvala.Lolu hlobo lwevalve yokuntanta lunokumelana nokuvuleka okukhulu futhi lufaneleka kuphela amapayipi nemishini enezinga le-DN “200 kanye nengcindezi ye-PN “100.Uma ububanzi bebhola bukhulu kakhulu, buzogoba umzimba we-valve futhi buhluleke ngaphansi kwengcindezi ye-medium;uma ukucindezela kuphezulu kakhulu, i-valve yebhola izocindezelwa futhi i-elastically futhi isihlalo se-valve esinwebekayo sizokhubazeka unomphela, okungase kulimaze uphawu futhi kuthinte i-valve yebhola.ukuphila.
2. I-valve yebhola engaguquki isethwe kabusha yiziqu ezingenhla nezingezansi.Isihlalo se-valve sifakwe isiphethu seqabunga noma i-cylindrical spiral spring.Uma ifakwe, intwasahlobo yesihlalo se-valve iyacindezelwa ukuze ikhiqize amandla okuqinisa ngaphambili ukuze kuzuzwe uphawu lokuqala lwe-valve, futhi ukucindezela kuyaphushwa ngesikhathi sokusetshenziswa.Isihlalo se-valve siya ebholeni ukuze sifinyelele uphawu.Ngenxa yokuthi ibhola alinyakazi, libizwa ngokuthi i-valve yebhola engaguquki.Lolu hlobo lokulungisa luthembeke kakhulu kunama-valve ebhola antantayo ngenxa yokwethembeka kwawo ekutywineni.Ingasetshenziswa ebangeni elibanzi, hhayi kuphela ngamadayamitha amancane okucindezela okuphansi, kodwa futhi nokucindezela okukhulu kwamadayamitha amakhulu.Kodwa ukwakheka kwawo kuyinkimbinkimbi kakhulu
, Izindleko zentengo ziphezulu, lapho ukhetha, kufanele ukhethe ngokuvumelana nezidingo zangempela.
3. I-valve ye-hemispherical eccentric.Lolu hlobo lwe-valve yebhola luthatha isakhiwo esingenasici.Umgomo wesakhiwo uyafana nalowo wevalve uvemvane enezingqimba eziningi ezintathu eccentric hard-sealed.Isihlalo se-valve nebhola akugugi futhi kunomsebenzi wokuvala oqinile.Ibhola liyi-1/4 kuphela ye-valve yebhola evamile.Inobuso obugobile, isisindo esilula kanye nenani eliphansi uma kuqhathaniswa.Lokhu kunomthelela wokugunda futhi kungasetshenziswa epayipini eliphakathi nendawo eliqukethe imicu emide ngaphandle kokuminyana.
4. I-flange ye-valve yebhola yokushisa eshisayo iyincazelo eyodwa kuya kwezimbili ezinkulu kune-valve yebhola ye-flange evamile.Yamukela umzimba we-valve obalulekile kanye nomklamo webhola obekwe eceleni.Ijakhethi yensimbi ishiselwe phakathi kwama-flange akhulisiwe ngaphandle komzimba we-valve.Ibizwa nangokuthi i-valve yebhola enejakhethi.Izindawo zokusebenzelana ezinamajakhethi zifakwe ezinhlangothini zombili zomzimba we-valve, ezingashiswa ngesitimu noma enye igesi eshisiwe ngokweqile ukuze kuvinjelwe okuphakathi ukuthi kungajikijeli noma kube yikristalu ekamelweni lokushisa.Ama-valve amabhola okushisa asetshenziswa kakhulu kumapayipi kanye namadivayisi alula ukucwebezela futhi adinga ukufakwa kwe-thermal ku-petroleum, amakhemikhali, i-metallurgical, kanye nezinhlelo zemithi.
5. Ivalve yebhola emise okwe-V iyivalvu yebhola elawulayo.Imbobo yokugeleza kwebhola yehluke kakhulu kunembobo eqondile edlula embotsheni evamile yebhola.Ibhola linesakhiwo esimise okwe-V futhi ngokuvamile lithatha isakhiwo esinqunyiwe esineziqu ezimbili ezingenhla nezingaphansi.
6. Ivalvu yebhola ene-fluorine ivamise ukusetshenziswa kumazinga okushisa aphansi namapayipi ezinto ezidlayo ezimaphakathi.Lolu hlobo lwe-valve yebhola lufakwe amapulasitiki obunjiniyela amelana nokugqwala njenge-PFA noma i-FEP kuzo zonke izingxenye zesiteshi sokugeleza ezixhumene nendawo.Ingathatha indawo yensimbi engenasici ebizayo kanye ne-Hastelloy ngaphansi kwesimo sokungeqi izinga lokushisa lesevisi yenjoloba ye-fluorine epayipini lokucindezela okuphansi., i-Monel alloy, i-alloy No.
Ngokuya ngesakhiwo nomsebenzi, ingahlukaniswa ibe:
1. Kunezinhlobo eziningana zama-valve ebhola.Ziyiniama-valve ebhola antantayo: Ama-valve ebhola antantayo asetshenziswa njengezimpawu futhi ibhola liyantanta.Isebenzisa ukucindezela kwendawo ephakathi ukusunduza ibhola ukuze ihambe ibanga bese incindezela isihlalo sevalvu esinwebekayo ukuze sifinyelele umphumela wokuvala.Lolu hlobo lwevalve yokuntanta lunokumelana nokuvuleka okukhulu futhi lufaneleka kuphela amapayipi nemishini enezinga le-DN “200 kanye nengcindezi ye-PN “100.Uma ububanzi bebhola bukhulu kakhulu, buzogoba umzimba we-valve futhi buhluleke ngaphansi kwengcindezi ye-medium;uma ukucindezela kuphezulu kakhulu, i-valve yebhola izocindezelwa futhi i-elastically futhi isihlalo se-valve esinwebekayo sizokhubazeka unomphela, okungase kulimaze uphawu futhi kuthinte i-valve yebhola.ukuphila.
2. I-valve yebhola engaguquki isethwe kabusha yiziqu ezingenhla nezingezansi.Isihlalo se-valve sifakwe isiphethu seqabunga noma i-cylindrical spiral spring.Uma ifakwe, intwasahlobo yesihlalo se-valve iyacindezelwa ukuze ikhiqize amandla okuqinisa ngaphambili ukuze kuzuzwe uphawu lokuqala lwe-valve, futhi ukucindezela kuyaphushwa ngesikhathi sokusetshenziswa.Isihlalo se-valve siya ebholeni ukuze sifinyelele uphawu.Ngenxa yokuthi ibhola alinyakazi, libizwa ngokuthi i-valve yebhola engaguquki.Lolu hlobo lokulungisa luthembeke kakhulu kunama-valve ebhola antantayo ngenxa yokwethembeka kwawo ekutywineni.Ingasetshenziswa ebangeni elibanzi, hhayi kuphela ngamadayamitha amancane okucindezela okuphansi, kodwa futhi nokucindezela okukhulu kwamadayamitha amakhulu.Kodwa ukwakheka kwawo kuyinkimbinkimbi kakhulu
, Izindleko zentengo ziphezulu, lapho ukhetha, kufanele ukhethe ngokuvumelana nezidingo zangempela.
3. I-valve ye-hemispherical eccentric.Lolu hlobo lwe-valve yebhola luthatha isakhiwo esingenasici.Umgomo wesakhiwo uyafana nalowo wevalve uvemvane enezingqimba eziningi ezintathu eccentric hard-sealed.Isihlalo se-valve nebhola akugugi futhi kunomsebenzi wokuvala oqinile.Ibhola liyi-1/4 kuphela ye-valve yebhola evamile.Inobuso obugobile, isisindo esilula kanye nenani eliphansi uma kuqhathaniswa.Lokhu kunomthelela wokugunda futhi kungasetshenziswa epayipini eliphakathi nendawo eliqukethe imicu emide ngaphandle kokuminyana.
4. I-flange ye-valve yebhola yokushisa eshisayo iyincazelo eyodwa kuya kwezimbili ezinkulu kune-valve yebhola ye-flange evamile.Yamukela umzimba we-valve obalulekile kanye nomklamo webhola obekwe eceleni.Ijakhethi yensimbi ishiselwe phakathi kwama-flange akhulisiwe ngaphandle komzimba we-valve.Ibizwa nangokuthi i-valve yebhola enejakhethi.Izindawo zokusebenzelana ezinamajakhethi zifakwe ezinhlangothini zombili zomzimba we-valve, ezingashiswa ngesitimu noma enye igesi eshisiwe ngokweqile ukuze kuvinjelwe okuphakathi ukuthi kungajikijeli noma kube yikristalu ekamelweni lokushisa.Ama-valve amabhola okushisa asetshenziswa kakhulu kumapayipi kanye namadivayisi alula ukucwebezela futhi adinga ukufakwa kwe-thermal ku-petroleum, amakhemikhali, i-metallurgical, kanye nezinhlelo zemithi.
5. Ivalve yebhola emise okwe-V iyivalvu yebhola elawulayo.Imbobo yokugeleza kwebhola yehluke kakhulu kunembobo eqondile edlula embotsheni evamile yebhola.Ibhola linesakhiwo esimise okwe-V futhi ngokuvamile lithatha isakhiwo esinqunyiwe esineziqu ezimbili ezingenhla nezingaphansi.
6. Ivalvu yebhola ene-fluorine ivamise ukusetshenziswa kumazinga okushisa aphansi namapayipi ezinto ezidlayo ezimaphakathi.Lolu hlobo lwe-valve yebhola lufakwe amapulasitiki obunjiniyela amelana nokugqwala njenge-PFA noma i-FEP kuzo zonke izingxenye zesiteshi sokugeleza ezixhumene nendawo.Ingathatha indawo yensimbi engenasici ebizayo kanye ne-Hastelloy ngaphansi kwesimo sokungeqi izinga lokushisa lesevisi yenjoloba ye-fluorine epayipini lokucindezela okuphansi., i-Monel alloy, i-alloy No.
Isikhathi sokuthumela: Jul-08-2021