Kutentha Kwambiri Mpira Valve

Kodi ma valve okhazikika a mpira amakhala ndi malire otani?

Mavavu wamba wamba wokhazikika wa carbon steel mpira wopanda kukweza kwapamwamba kwambiri nthawi zambiri amagwira ntchito motetezeka mkati mwa -20 ℃ mpaka 180 ℃. Kutentha kukagwira ntchito kupitilira 200 ℃, zisindikizo zofewa za PTFE zitha kufewetsa, kupunduka ndikuyamba kuchucha mosavuta, ndipo matupi wamba oponyedwa zitsulo amatha kupindika pang'onopang'ono ndi kutentha kosalekeza kwanthawi yayitali. Ma valve athu amtundu woyandama wa GB amatsata kutentha kwanthawi zonse ndipo ndi oyenera madzi ofunda m'chipinda, gasi wamba komanso madzi omwe amagwiritsidwa ntchito m'mafakitale osatentha kwambiri, omwe sangathe kupirira kutentha kwanthawi yayitali kapena ntchito yamafuta otentha. Mosiyana ndi izi, mavavu athu odzipatulira a mpira amaphwanya malire awa.

Nchiyani chimapangitsa valavu ya mpira kukhala "kutentha kwakukulu"?

Vavu ya mpira imayenera kukhala yotentha kwambiri makamaka kuchokera kuzinthu zitatu zazikuluzikulu zosiyana ndi zitsanzo wamba. Choyamba ndi makonda osindikizira kutentha zosagwira kusindikiza m'malo mokhazikika PTFE filler; timatengera graphite, chitsulo-to-metal chosindikizira cholimba kapena mphete zapadera za alloy zomwe sizingafewe ndi kutentha kwakukulu. Chachiwiri ndi kamangidwe kake ka thupi, kamene kamakhala ndi kusiyana kwapadera komwe kumasungidwa mkati mwa valavu kuti athetse kuwonjezereka kwachitsulo ndikupewa mpira wokhazikika kapena kuphwanyidwa pa kutentha kwakukulu. Chachitatu ndi osankhidwa zipangizo zosagwira kutentha kwa thupi ndi mkati kokha. Chifukwa cha kuwongolera kutatu kumeneku, valavu imakhala yolimba komanso yosinthika ngakhale kutentha kwanthawi yayitali, komwe ndiko kusiyana kwakukulu komwe kumalekanitsa ndi ma valve wamba a mpira.

Makhalidwe Ofunika

Ndi zipangizo ziti zomwe zili zabwino kwambiri kwa thupi la valve?

Kusankhidwa kwa zinthu kumadalira mwachindunji kutentha kwenikweni kwa ntchito. Pogwira ntchito kutentha pansi pa 450 ℃, chitsulo cha aloyi ngati WC6 / WC9 ndiye chosankha chathu chotsika mtengo kwambiri, chomwe chimagwiritsidwa ntchito kwambiri pamapaipi amafuta a nthunzi ndi otentha m'mafakitale amafuta a petrochemical ndi matenthedwe. Ngati malo ogwirira ntchito afika pa 550 ℃ kapena kunyamula kutentha pang'ono pang'ono, F304 ndi F316 zitsulo zosapanga dzimbiri zimakhala njira yabwino yopangira kutentha komanso kukana dzimbiri. Pa kutentha kwambiri kuposa 600 ℃ pansi pa malo ogwira ntchito movutirapo, timagwiritsa ntchito chitsulo chapadera chotentha kwambiri cha chrome-moly alloy pamaoda makonda. Chitsulo wamba cha WCB chomwe chimagwiritsidwa ntchito pamavavu ampira nthawi zonse sichimalimbikitsidwa pazochitika zotentha kwambiri.

Ndi mafakitale ati omwe amafunikira ma valve otenthetsera kwambiri?

Mavavuwa amagwiritsidwa ntchito kwambiri m'mafakitale opangira magetsi otentha, kuyengetsa kwa petrochemical, makina obwezeretsa kutentha kwa zinyalala, mapaipi a nthunzi ya boiler ndi mizere yoperekera phula. Zinthu zogwirira ntchito zoterezi zimanyamula nthunzi yosalekeza, mafuta otentha otentha komanso madzi amadzimadzi otentha kwambiri, pomwe ma valve a mpira wa carbon steel sangathe kugwira ntchito yokhazikika kwa nthawi yayitali.

Kodi mavavu anu otenthetsera kwambiri amaphimba magiredi otani?

Zogulitsa zathu zimakwirira PN16 mpaka PN100 kuti zigwirizane ndi ntchito zosiyanasiyana zotentha kwambiri. Sing'anga yotentha kwambiri nthawi zambiri imabweretsa kusinthasintha kwakukulu, kotero timakulitsa khoma la thupi la vavu ndikulimbitsa gawo lamkati poyerekeza ndi ma valve a mpira wa GB wanthawi zonse kuti tiwongolere magwiridwe antchito.