Amaphuzu abalulekile okukhethwa kwama-valve afingqiwe
Iningi lemidiya emishinini yokukhiqiza amakhemikhali inezici zobuthi obuphezulu, obuvuthayo, obuqhumayo kanye nokugqwala. Izimo zokusebenza ziyinkimbinkimbi futhi zinzima, futhi izinga lokushisa lokusebenza nokucindezela kuphezulu. Uma i-valve ihluleka, ukukhanya kuzoholela ekuvuzeni okuphakathi, okusindayo kuzoholela ekuvaleni kwedivayisi, futhi kubangele ngisho nezingozi ezimbi. Ngakho-ke, ukukhetha kwesayensi nokunengqondo kwe-valve akukwazi nje ukunciphisa izindleko zokwakha zedivayisi, kodwa futhi kuqinisekise ukusebenza okuphephile kokukhiqiza. Ake sixoxeukukhethwa kwe-valve!
Iningi lemidiya emishinini yokukhiqiza amakhemikhali inezici zobuthi obuphezulu, obuvuthayo, obuqhumayo kanye nokugqwala. Izimo zokusebenza ziyinkimbinkimbi futhi zinzima, futhi izinga lokushisa lokusebenza nokucindezela kuphezulu. Uma i-valve ihluleka, ukukhanya kuzoholela ekuvuzeni okuphakathi, okusindayo kuzoholela ekuvaleni kwedivayisi, futhi kubangele ngisho nezingozi ezimbi. Ngakho-ke, ukukhetha kwesayensi nokunengqondo kwe-valve akukwazi nje ukunciphisa izindleko zokwakha zedivayisi, kodwa futhi kuqinisekise ukusebenza okuphephile kokukhiqiza. Ake sikhulume ngokukhetha ama-valve!
Amaphuzu abalulekile wokukhetha ama-valve
1 I-valve ecacile emshinini noma ekusetshenzisweni kwedivayisi
Nquma izimo zokusebenza ze-valve: uhlobo lwendawo esebenzayo, ingcindezi yokusebenza, izinga lokushisa lokusebenza kanye nemodi yokulawula yokusebenza.
Khetha uhlobo olulungile lwe-valve
Ukukhetha okulungile kohlobo lwe-valve kusekelwe kumklami wayo yonke inqubo yokukhiqiza, ukubamba okuphelele kwezimo zokusebenza njengemfuneko, ekukhetheni uhlobo lwama-valve, umklami kufanele aqale abe yingcweti yezimpawu zesakhiwo nokusebenza kwevalvu ngayinye.
Nquma ukuxhumana kokuphela kwe-valve
Ekuxhumekeni okucushiwe, uxhumano lwe-flange, uxhumano lwe-welding end, izinhlobo ezimbili zokuqala ezivamile. Ama-valve anemicu ama-valve ikakhulukazi anobubanzi obuncane obungaphansi kuka-50mm. Uma ubukhulu bobubanzi bukhulu kakhulu, ukufakwa nokubekwa uphawu kokuxhumana kunzima kakhulu.
Ama-valve ane-Flanged afaneleka kakhulu ukufaka nokuwakhipha, kodwa makhulu futhi abiza kakhulu kunama-valve ane-threaded, ngakho-ke afaneleka ukuxhumeka kwamapayipi osayizi obuhlukahlukene nezingcindezi.
Ukuxhumeka okuhlanganisiwe kunokwethenjelwa kakhulu kunokuxhumeka kwe-flanged, okulungele izimo zokulayisha. Kodwa ukuhlakazwa kwe-valve eshiselwe nokufakwa kabusha kunzima kakhulu, ngakho-ke ukusetshenziswa kwayo kuvame ukusebenza okuthembekile kwesikhathi eside, noma izimo zokusetshenziswa zokulayisha, izikhathi zokushisa okuphezulu.
4. Ukukhethwa kwempahla ye-valve
Ukukhethwa kwegobolondo le-valve, izingxenye zangaphakathi kanye nezinto ezingaphezulu zokuvala, ngaphezu kokucabangela izici ezibonakalayo zendawo yokusebenza (izinga lokushisa, ingcindezi) kanye nezakhiwo zamakhemikhali (ukugqwala), kufanele futhi zilawule izinga lokuhlanzeka kwemidiya (ezinezinhlayiya eziqinile noma ezingenazo. ), ngaphezu kwalokho, kodwa futhi abhekisele ezinhlinzekweni ezifanele zombuso kanye nokusetshenziswa kweminyango.
Ukukhetha okulungile nokunengqondo kwezinto ze-valve kungathola impilo engcono kakhulu yesevisi yezomnotho nokusebenza okungcono kwe-valve. I-valve yohlelo lokukhetha impahla yomzimba: insimbi ecijile – insimbi ye-carbon – insimbi engagqwali, i-oda lokukhetha indandatho yokuvala: irabha – ithusi – insimbi yengxubevange -F4.
Abanye abahlanu
UKWENGEZA, IZINGA LOKUSHESHA KANYE NEZINGA LOMCINDEZI WOKUSHIYA OKUGUBHA NGEVAVU KUFANELE KUQINISWE, KANYE NEvalvu efanele kufanele kukhethwe kusetshenziswa ulwazi olutholakalayo (isb., ikhathalogi yomkhiqizo wamavalvu, isampula yomkhiqizo wamavalvu, njll.).
Incazelo yokukhethwa kohlobo lwe-valve evamile
Ukucaciswa kokukhethwa kohlobo lwe-valve yesango
Ngokuvamile, kufanele kunikezwe kuqala ama-valve esango. I-valve yesango ngaphezu kokufanelekile ku-steam, uwoyela kanye nezinye imidiya, kodwa futhi iyasebenza ukuze iqukathe okuqinile kwe-granular kanye ne-viscosity ye-medium, futhi ifaneleka kuma-vent kanye nama-vacuum system valve. Ngokwesilinganiso esinezinhlayiya eziqinile, umzimba we-valve wesango uzohlinzekwa ngembobo yokuhlanza eyodwa noma ezimbili. Ngokushisa okuphansi okuphakathi, i-valve yesango lokushisa eliphansi kufanele ikhethwe.
2. Incazelo yokukhethwa kwe-valve enqamuliwe
I-globe valve ifanele izidingo zokumelana noketshezi akuzona eziqinile epayipini, okungukuthi, ukulahlekelwa kwengcindezi akucatshangwa, futhi izinga lokushisa eliphezulu, ipayipi eliphakathi nomfutho ophezulu noma idivayisi, ifanele i-DN I-valve encane ingakhetha i-valve yembulunga, njenge-valve yenaliti, i-valve yensimbi, i-valve yesampula, i-valve gauge yokucindezela, njll;
I-valve ye-globe inokulawulwa kokugeleza noma ukulawulwa kwengcindezi, kodwa ukunemba kokulungiswa akuphakeme, futhi ububanzi bepayipi buncane kakhulu, kufanelekile ukukhetha i-valve ye-globe noma i-throttle valve;
Ukuze uthole medium enobuthi kakhulu, kuyafaneleka ukukhetha bellows sealed globe valve; Kodwa i-valve yembulunga akufanele isetshenziselwe okuphakathi nendawo ene-viscosity enkulu kanye ne-medium equkethe izinhlayiya ezitholakala kalula, futhi akufanele isetshenziswe njenge-valve yokukhipha umoya kanye ne-valve yesistimu ye-vacuum ephansi.
3. Ukucaciswa kokukhethwa kwe-valve yebhola
I-valve yebhola ifanele ukushisa okuphansi, ukucindezela okuphezulu, i-viscosity medium. Ama-valve amaningi ebhola angasetshenziswa phakathi nezinhlayiya eziqinile ezimisiwe, ngokusho kwezidingo zezinto zokuvala zingasetshenziswa ku-powder kanye nemidiya ye-granular;
I-valve yebhola yeziteshi zonke ayifanele ukulawulwa kokugeleza, kodwa ifanele izikhathi zokuvula nokuvala ngokushesha, ukunqanyulwa kwezimo eziphuthumayo kalula; Imvamisa ekusebenzeni kokuvala okuqinile, ukugqoka, ukuncipha kwesiteshi, ukuvulwa nokuvala ngokushesha, ukunqanyulwa kwengcindezi ephezulu (umehluko omkhulu wengcindezi), umsindo ophansi, into ye-gasification, i-torque encane yokusebenza, ukumelana noketshezi, ukusetshenziswa kwama-valve ebhola kuyanconywa.
I-valve yebhola ifanele isakhiwo sokukhanya, i-low pressure cut-off, imidiya egqwalayo; I-valve yebhola noma izinga lokushisa eliphansi, i-cryogenic medium ye-valve ekahle, izinga lokushisa eliphansi lesistimu yamapayipi aphakathi nendawo kanye nedivayisi, kufanele kukhethwe ngesembozo se-valve yebhola lokushisa eliphansi;
Izinto zesihlalo se-valve yebhola elintantayo kufanele zithwale umthwalo webhola kanye nendawo yokusebenza, i-valve enkulu yebhola esebenzayo idinga amandla amakhulu, DN≥
Ivalvu yebhola engu-200mm kufanele ikhethe ifomu lokudlulisela igiya lezikelemu; I-valve yebhola engaguquki ifanele ububanzi obukhulu kanye nezikhathi zokucindezela okukhulu; Ngaphezu kwalokho, i-valve yebhola esetshenziselwa inqubo yezinto ezinobuthi obukhulu, ipayipi lemidiya evuthayo, kufanele libe nomlilo, isakhiwo esilwa ne-static.
4. Incazelo yokukhethwa kwe-throttle valve
I-valve ye-throttle ifanele ukushisa okuphansi okuphakathi, izikhathi zokucindezela okuphezulu, ezifanele isidingo sokulungisa izingxenye zokugeleza nengcindezi, hhayi i-viscosity futhi equkethe izinhlayiya eziqinile eziphakathi, akufanele isetshenziswe njenge-valve block.
Incazelo yokukhetha uhlobo lwe-valve yepulaki
I-valve yokuxhuma ifanele izikhathi zokuvula nokuvala ngokushesha, ngokuvamile ayifaneleki isitimu kanye nendawo yokushisa ephezulu, izinga lokushisa eliphansi, i-viscosity medium ephezulu, futhi ilungele okumaphakathi nezinhlayiya ezimisiwe.
Incazelo yokukhethwa kohlobo lwe-butterfly valve
I-valve ye-Butterfly ifanele ububanzi obukhulu (njenge-DN>600mm) kanye nezidingo zobude besakhiwo esifushane, nesidingo sokulawula ukugeleza kanye nezidingo zokuvula nokuvala ngokushesha, ngokuvamile ezisetshenziselwa izinga lokushisa ≤
I-80 ℃, ingcindezi ≤1.0MPa amanzi, uwoyela nomoya ocindezelwe neminye imidiya; Ngenxa ye-valve uvemvane ehlobene ne-valve yesango, ukulahleka komfutho we-valve yebhola kukhulu uma kuqhathaniswa, ngakho-ke i-valve uvemvane ifanele izidingo zokulahlekelwa yingcindezi ayiqinile ohlelweni lwamapayipi.
Incazelo yokukhetha i-valve yesheke
I-valve yokuhlola ngokuvamile ilungele imidiya ehlanzekile, akufanele isetshenziswe endaweni equkethe izinhlayiya eziqinile kanye ne-viscosity enkulu. Uma ≤40mm, kuhle ukusebenzisa i-valve yokuhlola i-lift (* evunyelwe ukufakwa epayipini elivundlile); Uma i-DN = 50 ~ 400mm, kuyafaneleka ukusebenzisa ivalvu yokuhlola i-swing lift (epayipini elivundlile neliqondile lingafakwa, njengokufakwa epayipini eliqondile, ukugeleza okuphakathi ukusuka phansi kuya phezulu);
Uma i-DN≥450mm, i-valve yokuhlola uhlobo lwe-buffer kufanele isetshenziswe; Lapho i-DN = 100 ~ 400mm ingaphinda ikhethe uhlobo lwe-clamp yokuhlola i-valve; I-valve yokuhlola i-Swing ingenziwa ngomfutho ophakeme kakhulu wokusebenza, i-PN ingafinyelela ku-42MPa, ngokusho kwegobolondo kanye nezinto zokufaka uphawu zingasetshenziswa kunoma iyiphi indawo yokusebenza nanoma yiluphi uhla lokushisa olusebenzayo.
Okuphakathi kwamanzi, isitimu, igesi, i-corrosive medium, uwoyela, umuthi, njll. Izinga lokushisa elisebenzayo le-medium liphakathi kuka -196 ℃ no-800℃.
Incazelo yokukhethwa kwevalvu ye-diaphragm
I-valve ye-diaphragm ifanele ukusebenza kwezinga lokushisa elingaphansi kuka-200 ℃, ingcindezi engaphansi kukawoyela ongu-1.0MPa, amanzi, i-asidi emaphakathi nendawo equkethe udaba olumisiwe, ayifanele izinyibilikisi ze-organic kanye ne-oxidant medium eqinile;
I-abrasive granular medium kufanele ikhethe i-valve ye-diaphragm ye-weir, ikhethe i-valve ye-diaphragm ye-weir ukuze ibhekisele kuthebula lezimpawu zokugeleza kwayo; I-Viscous fluid, i-cement slurry kanye ne-precipitating medium kufanele kukhethwe ngokuqondile nge-valve ye-diaphragm; Ngaphandle kwalapho kucaciswe ngenye indlela, i-valve ye-diaphragm akufanele isetshenziswe emigqeni ye-vacuum kanye nezinto zokusebenza ze-vacuum.
Isikhathi sokuthumela: Oct-14-2022
