Momwe mungasankhire pakati pa valavu yagulugufe yokhazikika, yokhazikika pawiri komanso katatu eccentric?

Kusiyana kwa kapangidwe ka gulugufe valavu amasiyanitsa mitundu inayi ya mavavu agulugufe, ndicho:valavu ya butterfly yokhazikika, valavu imodzi yokha yagulugufe,valavu yagulugufe yawiri eccentricndi katatu eccentric butterfly valve.Kodi lingaliro la kuphatikizika kumeneku ndi chiyani?Momwe mungasankhire nthawi yoti mugwiritse ntchito valavu yagulugufe, kugwiritsa ntchito valavu yagulugufe imodzi yokha, kugwiritsa ntchito valavu yagulugufe wapawiri komanso valavu yagulugufe katatu?Ogwiritsa ntchito ambiri sakhala omveka bwino.Tiyeni tiphunzire pamodzi.

Mavavu agulugufe okhazikika, mavavu agulugufe amodzi okha, awirima eccentric butterfly mavavundi katatu eccentric agulugufe mavavu kwenikweni amasonyeza njira kutsegula ndi kutseka ndi pang'onopang'ono ndi khama pang'ono ndi pang'ono kuvala pa kusindikiza pamwamba.Pokhazikitsa malo a shaft yozungulira ya mbale ya butterfly valve, malo osindikizira ndi otsegula a gulugufe amatha kusintha.Pazifukwa zomwezo, torque ya valavu ikatsegulidwa ikuwonjezeka motsatizana.Vavu ikatsegulidwa, mbali yozungulira yofunikira kuti mbale ya valve isiyanitse ndi chisindikizo ndi yaying'ono motsatizana.

Chomangira cha valavu yagulugufe ndi chakuti shaft pakati pa tsinde la valavu, pakati pa mbale ya gulugufe ndi pakati pa thupi la valavu zili pamalo omwewo.Nthawi zambiri, ngati ma valve agulugufe atha kugwiritsidwa ntchito, ayenera kugwiritsidwa ntchito momwe angathere.Chifukwa mtundu wokhazikika sufuna kusindikiza kwakukulu malinga ndi kapangidwe kake kapena magwiridwe antchito, ndi chinthu wamba.Pofuna kuthana ndi kutulutsa, kupukuta, ndikuonetsetsa kuti ntchito yosindikiza ikugwira ntchito, mpando wa valve wa gulugufe wokhazikika umapangidwa ndi mphira kapena PTFE ndi zipangizo zina zotanuka, zomwe zimakhala zofewa zosindikizira butterfly.Izi zimapangitsa kugwiritsa ntchito mavavu agulugufe omwe ali ndi vuto la kutentha.Pofuna kuthetsa vuto la kuphulika kwa mbale ya gulugufe ndi mpando wa valve, valavu imodzi yokha ya butterfly inapangidwa.Maonekedwe ake ndikuti tsinde lapakati la tsinde la valve limapatuka pakatikati pa mbale yagulugufe.

Valavu yagulugufe yamtundu wa Double eccentric ndiyo yomwe imagwiritsidwa ntchito kwambiri.Zomwe zimapangidwira ndikuti tsinde lapakati la tsinde la valve limapatuka pakati pa gulugufe ndi pakati pa valavu.Imapatuka pazigawo ziwiri zapakati, motero imatchedwa valavu yagulugufe iwiri.Ambiri aiwo amasindikizidwa mizere.Pamene malo osindikizira atsekedwa, pali kukangana pakati pa mbale ya disc ndi mpando wa valve, ndipo kusindikiza kwake kumakhala kwabwino kwambiri.Lili ndi makhalidwe a malo ang'onoang'ono komanso kupanikizika kwamphamvu.Vavu ikatsegulidwa, mbale yagulugufe imatha kuchoka pampando wa valavu, yomwe imathetsa kutulutsa kopitilira muyeso komanso kukanda pakati pa mbale ndi mpando, kumachepetsa mtunda wotsutsa, kuvala, ndikuwongolera moyo wautumiki wa mpando wa valve.

Valavu yagulugufe yamagulugufe patatu imakhala ndi eccentricity yachitatu pamaziko a valavu yagulugufe wapawiri.Maonekedwe a awiri osindikizira si koni yabwino, koma oblique cone.Ambiri aiwo ndi mphamvu yakutali komanso chisindikizo chapamwamba.Tsinde la tsinde la valavu ya gulugufe katatu ndi gawo la magawo atatu.Zigawo ziwiri za shaft ya tsinde la shaft valve ya magawo atatu ndizokhazikika, ndipo mzere wapakati wa shaft wapakati umachoka pamphepete mwa malekezero awiri ndi mtunda wapakati, ndipo mbale ya butterfly imayikidwa pakati.pa shaft.Kapangidwe kameneka kamapangitsa gulugufe kukhala ndi mawonekedwe owoneka bwino akamatseguka, komanso mawonekedwe amodzi agulugufe akatembenukira kumalo otsekedwa.Chifukwa cha mphamvu ya shaft eccentric, ikatsala pang'ono kutseka, mbale yagulugufe imayenda mtunda wautali kupita kumalo osindikizira a mpando wa valve, ndipo mbale ya gulugufe imafanana ndi kusindikiza pamwamba pa mpando wa valve kuti akwaniritse ntchito yosindikiza yodalirika.Zimapangitsa kutsutsana kuti chisindikizo cholimba chimakhala ndi chisindikizo chosauka, ndipo chisindikizo chofewa chimakhala ndi kusindikiza kwabwino koma sichimatsutsana ndi kutentha kwakukulu.

Pamene ntchito concentric gulugufe valavu, pamene kusankha awiri eccentric gulugufe valavu kapena katatu eccentric gulugufe valavu, makamaka zimadalira mmene ntchito ndi bajeti.