Coefficient ya flux na cavitation coefficient ya valve birambuye muburyo bwo kugereranya umuvuduko nubushyuhe bwibikoresho bya valve

Coefficient ya flux na cavitation coefficente ya valve irambuye murutonde rwikigereranyo cyumuvuduko nubushyuhe bwibikoresho bya valve Ikintu cyingenzi cyingenzi cya valve ni coeffisente ya flux na coeffisente ya cavitation ya valve, mubisanzwe biboneka mumibare yimibiri yakozwe mu bihugu byateye imbere mu nganda, ndetse byacapishijwe muri sample. Igihugu cyacu gitanga valve mubusanzwe ntigifite aya makuru, kuko kubona iyi ngingo yamakuru agomba gukora igerageza kugirango tubashe gushyira imbere, iki nicyo gihugu cyacu ndetse nisi yateye imbere kurwego rwicyuho cya valve kimwe mubikorwa byingenzi . A, coefficient ya valve itemba Coefficient ya valve nigipimo cyibipimo byerekana ubushobozi bwimikorere ya valve, niko agaciro keza koeffisente itemba, amazi atembera muri valve mugihe igihombo cyumuvuduko ari gito. Ukurikije formulaire yo kubara agaciro KV Aho: KV - coefficient Q - umuvuduko wamazi m3 / h δ P - gutakaza umuvuduko wumuvuduko barP - ubwinshi bwamazi kg / m3 Babiri, coefficente ya cavitation Coefficient ya cavitation δ agaciro gakoreshwa mukumenya ni ubuhe bwoko bwa valve kubaka kugirango uhitemo kugenzura imigendekere. Aho: H1 - umuvuduko mH2 - itandukaniro riri hagati yumuvuduko wikirere hamwe numuvuduko wumwuka wumuyaga uhuye nubushyuhe M δ P - itandukaniro riri hagati yumuvuduko mbere na nyuma ya valve M Coefficient cavitation yemewe δ iratandukana mubibaya bitewe nuburyo butandukanye. Nkuko bigaragara ku gishushanyo. Niba coefficient ya cavitation yabazwe iruta iyemerwa rya cavitation yemewe, imvugo iremewe kandi cavitation ntizabaho. Niba coefficente yemewe ya cavitation ari 2.5, hanyuma: Niba δ2.5, cavitation ntizabaho. Kuri 2.5δ1.5, habaho cavitation nkeya. Kuri delta 1.5, kunyeganyega bibaho. Gukomeza gukoresha δ0.5 bizangiza valve hamwe nu muyoboro wo hasi. Shingiro kandi ikora iranga imirongo ya valve ntabwo yerekana igihe cavitation ibaye, kereka aho ingingo igeze igeze. Binyuze mu kubara hejuru birasobanutse. Kubwibyo rero, cavitation ibaho kuko iyo pompe ya rotor inyuze mugice cyo kugabanuka mugice cyamazi yihuta yihuta, igice cyamazi kiva mumazi, kandi ibibyimba byabyaye noneho bigaturika mugice gifunguye nyuma ya valve, ifite ibintu bitatu: . bifitanye isano cyane nigitutu H1 nyuma ya valve. Kongera H1 biragaragara ko bizahindura ibintu kandi bitezimbere uburyo: A. Shyira valve hasi kumurongo. B. Shyira isahani ya orifice mu muyoboro uri inyuma ya valve kugirango wongere imbaraga. C. Isoko ya valve irakinguye kandi yegeranya mu buryo butaziguye ikigega, cyongera umwanya wo guturika kwinshi kandi kigabanya isuri. Isesengura ryuzuye ryibintu bine byavuzwe haruguru, muri make incamake yumuryango, ikinyugunyugu kinyugunyugu nyamukuru nibiranga urutonde kugirango byoroshye guhitamo. Ibice bibiri byingenzi bigira uruhare runini mubikorwa bya valve. Umuvuduko wibikoresho hamwe nubushyuhe bwo kugereranya imbonerahamwe ya valve inganda imbere bazi ko guhitamo ibikoresho bya valve bigomba guhitamo ukurikije umuvuduko wubwubatsi bwa valve hamwe nubushyuhe bukoreshwa, ibikoresho bitandukanye mubitutu nubushyuhe bwubushyuhe ntabwo arimwe, tureba isano yo kugenzura. Abari mu nganda za valve bazi ko guhitamo ibikoresho bya valve bigomba guhitamo ukurikije umuvuduko wubwubatsi hamwe nubushyuhe bukoreshwa bwa valve. Umuvuduko nubushyuhe bwibikoresho bitandukanye ntabwo ari bimwe. Reka turebe isano itandukanye hagati yabo. Valve yumuvuduko wibintu hamwe nubushyuhe bwo kugereranya ubushyuhe Imeza ya Valve yibikoresho hamwe nubushyuhe bwo kugereranya ubushyuhe Icyuma cyumukara: Icyuma cyumukara gikwiranye namazi, umwuka, umwuka, gaze namavuta hamwe numuvuduko wizina PN≤ 1.0mpa nubushyuhe -10 ℃ ~ 200 ℃. Ibyiciro bisanzwe byicyatsi kibisi ni: HT200, HT250, HT300, HT350. Ibyuma byoroshye byoroshye: Bikwiranye numuvuduko wizina PN≤ 2.5mpa, ubushyuhe bwa -30 ~ 300 ℃ yamazi, amavuta, umwuka hamwe namavuta, ibicuruzwa bikunze gukoreshwa ni: KTH300-06, KTH330-08, KTH350-10. Icyuma cyangiza: Bikwiriye amazi, umwuka, umwuka n'amavuta hamwe na PN≤4.0MPa n'ubushyuhe bwa -30 ~ 350 ℃. Ibirango bikoreshwa cyane ni: QT400-15, QT450-10, QT500-7. Urebye urwego rw'ikoranabuhanga rugezweho, buri ruganda ntiruringaniye, kandi abakoresha ntabwo byoroshye kugerageza. Ukurikije ubunararibonye, ​​birasabwa ko PN≤ 2.5mpa, valve ibyuma bifite umutekano. Acide irwanya silikoni nini cyane: Ikwiranye nibitangazamakuru byangirika hamwe numuvuduko wizina PN≤ 0.25mpa nubushyuhe buri munsi ya 120 ℃. Ibyuma bya karubone: Bikwiranye n’amazi, umwuka, umwuka, hydrogène, ammonia, azote hamwe n’ibikomoka kuri peteroli hamwe n’umuvuduko w'izina PN≤32.0MPa n'ubushyuhe -30 ~ 425 ℃. Ibyiciro bikunze gukoreshwa ni WC1, WCB, ZG25 nicyuma cyiza 20, 25, 30 hamwe nicyuma gike cyubatswe 16Mn. Bikwiranye namazi, amazi yinyanja, ogisijeni, umwuka, amavuta nibindi bitangazamakuru hamwe na PN≤ 2.5mpa, hamwe nibitangazamakuru byamazi bifite ubushyuhe -40 ~ 250 ℃, ikirango gikunze gukoreshwa ni ZGnSn10Zn2 (tin bronze), H62, HPB59-1 (umuringa), QAZ19-2, QA19-4 (umuringa wa aluminium). Ubushyuhe bwo hejuru bw'umuringa: Bikwiranye n'ibicuruzwa bikomoka kuri peteroli hamwe na peteroli hamwe n'umuvuduko w'izina PN≤ 17.0mpa n'ubushyuhe ≤570 ℃. Ikirango gikunze gukoreshwa ZGCr5Mo, 1 cr5m0. ZG20CrMoV, ZG15Gr1Mo1V, 12 crmov WC6, WC9, nibindi. Guhitamo byihariye bigomba kuba bijyanye numuvuduko wa valve hamwe nubushyuhe bwubushyuhe.