Kusankha koyenera kwa mtundu wa vavu kumatha kuchepetsa kugwiritsa ntchito zinthu, kuchepetsa kukana kwanuko ndi kugwiritsa ntchito mphamvu, kuthandizira kukhazikitsa ndi kuchepetsa kukonza.M'nkhaniyi, Dongsheng Valve yakufotokozerani ma valve omwe amagwiritsidwa ntchito pamadzi a m'nyanja.
1. Valavu yotseka
The ndondomeko chitoliro awiri mu lalikulu lalikulu madzi a m'nyanja desalination zambiri DN300-DN1600, amene ali kupitirira malire ntchito wamba.ma valve a mpirandi ma valve a globe.Poyerekeza ndivalve pachipatazamtundu womwewo (Z41H), thevalavu ya butterflyali ndi ubwino wa dongosolo losavuta, kukana kwa dzimbiri kosavuta, kutalika kwaufupi kuyika, kugwiritsira ntchito zitsulo zochepa, ndi ma coefficients ofanana a kukana kwa valve.Ndizovuta kwambiri komanso zothandiza kusankha valavu yagulugufe ngati valavu yotseka.Malinga ndi kuchuluka kwa kuthamanga, ma valve agulugufe amatha kugawidwa m'mavavu agulugufe otsika komanso ma valve agulugufe othamanga kwambiri.
Low pressure butterfly valve
Vavu yagulugufe yotsika kwambiri imatha kutengera valavu yagulugufe yagulugufe yopanda pini.Pamene valavu ya gulugufe ili yocheperapo kapena yofanana ndi DN500, kugwirizana kwa wafer kumatengedwa.Pamene valavu butterfly ≥DN550, flange kugwirizana anatengera.Pamene awiri a gulugufe valavu ndi zosakwana kapena wofanana 6in.(DN150), mphamvu yotsegulira ndi yochepera 400N, ndipo imayendetsedwa ndi chogwirira.Pamene awiri a gulugufe valavu ndi ≥8in.(DN200), imayendetsedwa ndi bokosi la gear.Chifukwa cha kutsika kwapambuyo kwa valve yotsika kwambiri, kugwiritsa ntchito malo apakati sikudzawonjezera torque yambiri.Kapangidwe kameneka kali ndi zisindikizo ziwiri.Chisindikizo chachikulu chimapezedwa ndi mphamvu yowonjezereka ya gulugufe ndi mpando wa valve, ndipo chisindikizo chachiwiri chimapezeka ndi kusokoneza kwa tsinde la valve ndi dzenje la mpando wa valve.Popeza tsinde la valve ndilolekanitsidwa kwathunthu ndi sing'anga ndipo silitenga madzi a m'nyanja, tsinde la valve likhoza kupangidwa ndi 2Cr13 kapena zipangizo zofanana.Thupi la valve limapangidwa ndi ductile iron lining EPDM kuti iwonjezere ntchito yosindikiza.Popeza thupi la valavu silikukhudzana ndi sing'anga, zofunikira za thupi la valve zimachepetsedwa.
High pressure butterfly valve
Posankha zida za valve butterfly zothamanga kwambiri, kuwonjezera pa kulingalira za kuwonongeka kwa madzi a m'nyanja, kukakamizidwa kwa zinthuzo kuyenera kuganiziridwa.Pamene kupanikizika kogwira ntchito ndi 69bar ndipo kupanikizika kwakukulu ndi ≥85bar (kutsekera kotsekera kwa reverse osmosis pampu yothamanga kwambiri), chifukwa cha kuthamanga kwa msana, pofuna kuchepetsa Torque, valavu ya butterfly yamphamvu imagwiritsa ntchito mawonekedwe awiri.Pamene kukula kwadzina kwa gulugufe ndi ≤DN500, kugwirizana kwa wafer kumatengedwa.Pamene kukula mwadzina kwa gulugufe ndi ≥DN550, kugwirizana kwa flange kumatengedwa.Kupanikizika kalasi ndi CI600, valavu thupi ndi gulugufe mbale amapangidwa wapawiri-gawo zitsulo ASSTMA995GR.4A.Chifukwa tsinde la valve likuwonekera pakatikati, tsinde la valve limapangidwa ndi ASTMA276UNS31803, ndipo mpando wa valve ndi RPTFE.Kapangidwe kawiri kaŵirikaŵiri kumawonjezera mphamvu ya kukana kwanuko.Mbalame ya gulugufe ndi tsinde la valavu zimafunikira zikhomo kuti zikhazikitsidwe, ndipo zotsutsana ndi zowonongeka za zikhomo ndizofanana ndi zigawo zina zotuluka.
Valve yowunikira nthawi zambiri imayikidwa potuluka pampopi yamadzi am'nyanja kuti ateteze kubwereranso kwa madzi a m'nyanja ndi nyundo yamadzi kuti isawononge zida.Pakalipano, ma valavu omwe amagwiritsidwa ntchito pochotsa madzi a m'nyanjayi amaphatikizapo ma valve oyendera agulugufe omwe amatseka pang'onopang'ono, okhala ndi mphira.ma valve a butterfly wafer,single flap wafer check valvesndi single flap duplex steel wafer check mavavu.
Kutsekeka kwapang'onopang'ono kwa gulugufe
Chofunikira chachikulu cha valavu yotseka agulugufe ndi chitsulo cha ductile.Nyundo yamadzi yamakina kapena ma hydraulic yotseka pang'onopang'ono imakhala ndi kukana bwino kwa nyundo yamadzi ndipo ndiyoyenera kugwiritsidwa ntchito mopepuka.Kugwiritsa ntchito gawo lamadzi opangira ntchito yochotsa madzi am'nyanja.
Vavu yoyang'anira gulugufe wokhala ndi mizere yodzaza ndi mphira
Valavu yoyang'anira gulugufe yokhala ndi mizere yodzaza ndi mphira imathandiza kuti ma valve owunika agulugufe asamawonongeke pang'onopang'ono.Thupi la valavu ndi tsinde zili ndi mphira, ndipo valavu imatha kupangidwa ndi duplex chitsulo chosapanga dzimbiri kapena nickel aluminium bronze.Valavu yamtunduwu imayikidwa potuluka pampopi yamadzi a m'nyanja yotsika kwambiri ndipo ndiyoyenera kuyika pamapaipi akulu akulu.The awiri mwadzina valavu ndi osiyanasiyana DN200-1200.Ndikofunikira kulabadira zofunikira za malo oyika valavu panthawi yopanga.Kuyika kolakwika kwa valve kumapangitsa kuti diski ya valve ndi kasupe igwire ntchito pa tsinde la valve kwa nthawi yaitali, kuwononga chisindikizo pa kukhudzana pakati pa thupi la valve ndi tsinde la valve, kulowa mkati, ndikupangitsa kuti thupi la valve liwonongeke.
Valve yowunikira imodzi yokha
Valavu yoyang'ana tsamba limodzi ili ndi mawonekedwe osavuta komanso malo ang'onoang'ono oyika, ndipo ingagwiritsidwe ntchito pansi pa kupanikizika kochepa kapena kupanikizika kwambiri.Valavu imatenga chitsulo chosapanga dzimbiri cha duplex chonse, chomwe chimakhala ndi kukana kwamadzi a m'nyanja yabwino, kulemera kopepuka, kumatha kukhazikitsidwa mopingasa komanso molunjika, ndipo ndikosavuta kugwiritsa ntchito.Pachomera chochotsa mchere m'madzi a m'nyanja, valavu yokhala ndi valavu imodzi ≤DN250 imagwiritsidwa ntchito.Pamene kukula kwadzina kwa valavu kuli kwakukulu kuposa DN250, nyundo yamadzi imakhala ndi zotsatira zoonekeratu ndipo phokoso la zochitika ndi lalikulu.Valavu yowunikira imodzi yokhala ndi mainchesi yayikulu imagwiritsidwa ntchito kwambiri pakupopera kwa gasi.Valve ili ndi chiboliboli chosakwanira, kutsegula kwakukulu kwa valavu ya valve ndi 45 °, kukana kokwanira kumawonjezeka, ndipo mphamvu yothamanga imachepa.
Nthawi yotumiza: Sep-30-2021