I-High Temperature Ball Valve

Imuphi umkhawulo wokushisa amavalvu ebhola ajwayelekile anawo?

Amavalvu ebhola lensimbi yensimbi ekhabhoni avamile ngaphandle kokuthuthukiswa kwezinga lokushisa eliphezulu ngokuvamile asebenza ngokuphepha phakathi -20 ℃ kuya ku-180 ℃. Uma izinga lokushisa lokusebenza selingaphezu kuka-200℃, izigxivizo ezithambile ze-PTFE ezivamile zizothamba, ziwohloke futhi ziqale ukuvuza kalula, futhi imizimba yensimbi evamile ingasonteka kancane kancane ngaphansi kokushisa okungapheli okuqhubekayo. Amavalvu ethu avamile ebhola antantayo e-GB alandela leli banga lokushisa elivamile futhi afanelekela kuphela amanzi angamazinga okushisa egumbi, igesi yezinga lokushisa elivamile kanye noketshezi oluvamile lwasezimbonini olunokushisa okuphansi, olungakwazi ukumelana nomusi wesikhathi eside wezinga lokushisa eliphezulu noma isevisi kawoyela oshisayo. Ngokuphambene, ama-valve ethu azinikele ebhola ezinga eliphezulu aphula lo mkhawulo ngokuphelele.

Yini eyenza i-valve yebhola "izinga lokushisa eliphezulu"?

I-valve yebhola ifaneleka njengohlobo lwezinga lokushisa eliphezulu ikakhulukazi kusukela ekuthuthukisweni okuyisisekelo okuthathu okuhlukile kumamodeli ajwayelekile. Okokuqala yizingxenye zokuvala eziqinile ezikwazi ukumelana nokushisa esikhundleni sokugcwalisa i-PTFE ejwayelekile; sithatha i-graphite, i-metal-to-metal hard seal noma izindandatho ezikhethekile zokuvala ingxubevange ezingeke zithambe ngaphansi kokushisa okukhulu. Okwesibili idizayini yesakhiwo somzimba ethuthukisiwe, enegebe elikhethekile lokunweba elibekelwe ngaphakathi kwe-valve ukuze kuncishiswe ukunwetshwa kwensimbi okushisayo futhi kugwenywe ibhola elibambekile noma ukuchotshozwa kwe-seal lapho kushisa kakhulu. Okwesithathu yizinto ezingavuthiwe ezikhethiwe ezimelana nokushisa zomzimba kanye nokusikwa kwangaphakathi. Ngenxa yalokhu kuthuthukiswa okuqondisiwe okuthathu, i-valve ihlala iqinile futhi ivumelana nezimo ngisho nangaphansi kokushisa okuphezulu okuqhubekayo, okuwumehluko oyinhloko oyihlukanisa namavalvu ebhola avamile.

Izimfanelo Ezibalulekile

Yiziphi izinto ezilungele umzimba we-valve?

Ukukhethwa kwezinto kuncike ngokuqondile ekushiseni kwangempela kokusebenza. Ngokushisa okusebenzayo okungaphansi kuka-450 ℃, insimbi eyingxubevange efana ne-WC6 / WC9 iyindlela yethu yokukhetha evamile engabizi kakhulu, esetshenziswa kakhulu kumapayipi esitimu nawowoyela ashisayo ezimbonini zamakhemikhali e-petrochemical nezishisayo. Uma izimo zokusebenza zifika ku-550 ℃ noma ziphethe izinga lokushisa eliphezulu eligqwalile, i-F304 ne-F316 insimbi engagqwali iba inketho ekhethwayo yokumelana nokushisa okungcono nokugqwala. Ukuze uthole izinga lokushisa eliphakeme kakhulu elingaphezu kuka-600 ℃ ngaphansi kwendawo yokusebenza enokhahlo ngokwedlulele, sisebenzisa insimbi ekhethekile ye-chrome-moly alloy alloy ekhethekile yokushisa okuphezulu kuma-oda enziwe ngokwezifiso. Insimbi ye-carbon steel ye-WCB evamile esetshenziswa kumavalvu ebhola avamile ayinconyelwa neze kuzimo zokusebenza ezinezinga eliphezulu lokushisa.

Yiziphi izimboni ezijwayelekile ezidinga ama-valve ebhola asezingeni eliphezulu kakhulu?

Lawa mavalvu asetshenziswa kakhulu ezimbonini zamandla ashisayo, ukucwengisiswa kwe-petrochemical, izinhlelo zokubuyisa ukushisa okulahlwayo, amapayipi esitimu esibhayela kanye nemigqa yokulethwa kwetiyela. Izimo zokusebenza ezinjalo zithwala isitimu esinezinga eliphezulu lokushisa okuqhubekayo, uwoyela oshisayo oshisayo kanye noketshezi lwamakhemikhali ashisa kakhulu, lapho amavalvu ebhola e-carbon steel avamile engakwazi ukusekela ukusebenza okuzinzile kwesikhathi eside nhlobo.

Imaphi amamaki okucindezela amavalvu akho ebhola asezingeni eliphezulu?

Ibanga lomkhiqizo wethu lihlanganisa i-PN16 kuze kufike ku-PN100 ukuze ihambisane nezimo ezihlukahlukene zokusebenza ezinomfutho ophezulu wokushisa. I-high-temperature medium ivame ukuletha ukuguquguquka okukhulu kwengcindezi, ngakho-ke sijiya udonga lomzimba we-valve futhi siqinise ukwakheka kwengxenye yangaphakathi uma kuqhathaniswa namavalvu ebhola e-GB ezinga lokushisa elivamile ukuze sithuthukise ukusebenza okugcwele ingcindezi.