Chiyambi cha valavu ya butterfly

Valavu ya butterfly, yomwe imadziwikanso kuti flap valve, ndi valavu yosavuta yowongolera, yomwe imatha kugwiritsidwanso ntchito poletsa kuwongolera mapaipi otsika. Vavu ya butterfly ndi mtundu wa valavu yomwe mbali yake yotsekera (disiki kapena mbale yagulugufe) ndi diski ndipo imazungulira mozungulira valavu kuti atsegule ndi kutseka. Imagwira makamaka ntchito yodula ndikugwedeza mu payipi. Kutsegula ndi kutseka kwa valve ya butterfly ndi mbale ya butterfly yofanana ndi disc, yomwe imazungulira kuzungulira kwake mu thupi la valve, kuti akwaniritse cholinga chotsegula ndi kutseka kapena kusintha. Vavu ya butterfly imagwira ntchito pamapaipi omwe amatumiza zinthu zosiyanasiyana zowononga komanso zosawononga zamadzimadzi muukadaulo wa jenereta, gasi, gasi wachilengedwe, gasi wamafuta amtawuni, mpweya wozizira ndi wotentha, kusungunula kwamankhwala, kupanga magetsi komanso kuteteza chilengedwe. Amagwiritsidwa ntchito kuwongolera ndi kuletsa kutuluka kwa sing'anga. Kugwiritsa ntchito vavu ya butterfly valve ndi yoyenera kuwongolera kayendedwe kake. Popeza kuthamanga kwa valavu ya gulugufe mu payipi kumakhala kwakukulu, komwe kuli pafupifupi katatu kuposa valavu ya chipata, posankha valavu ya butterfly, chikoka cha kutayika kwa payipi pamapaipi chiyenera kuganiziridwa bwino, ndi kulimba kwa payipi ya gulugufe. kupanikizika kwapakatikati potseka kuyeneranso kuganiziridwa. Kuonjezera apo, malire a kutentha kwa ntchito ya mipando yokhazikika pa kutentha kwakukulu ayenera kuganiziridwa. Vavu yagulugufe ili ndi ubwino wake wamtali wampangidwe waung'ono ndi kutalika konse, kutsegula ndi kutseka mofulumira, ndi makhalidwe abwino olamulira madzimadzi. Mfundo ya kapangidwe ka gulugufe ndi yabwino kwambiri popanga valavu yayikulu. Pamene valavu ya butterfly ikufunika kuti iwononge kayendetsedwe kake, chinthu chofunika kwambiri ndikusankha kukula ndi mtundu wa valavu ya butterfly moyenera komanso moyenera. Nthawi zambiri, pakuwongolera, kuwongolera ndi matope, kutalika kwachidule komanso kutsegula ndi kutseka (1 / 4R) kumafunika. Kuchepetsa kuthamanga kwapakati (kusiyana kwapakati), vavu yagulugufe ndiyofunikira. Valavu ya butterfly ingagwiritsidwe ntchito posintha malo awiri, njira yokhotakhota, phokoso lochepa, cavitation ndi gasification, kutayikira pang'ono kumlengalenga ndi sing'anga yowononga. Mukamagwiritsa ntchito valavu yagulugufe pansi pamikhalidwe yapadera yogwirira ntchito, monga kuwongolera kwamphamvu, kufunikira kosindikiza mwamphamvu, kuvala kwambiri, kutentha pang'ono (cryogenic), etc., valavu yapadera ya tri eccentric kapena Bi eccentric butterfly yokhala ndi chipangizo chapadera chosindikizira chachitsulo chimafunika. The midline butterfly valve ndi yoyenera madzi abwino, zimbudzi, madzi a m'nyanja, brine, nthunzi, gasi, chakudya, mankhwala, mafuta, ma acid osiyanasiyana ndi zoyambira ndi mapaipi ena omwe amafunikira kusindikiza kwathunthu, kutayikira kwa zero pakuyezetsa gasi, moyo wautumiki wapamwamba. ndi kutentha ntchito - 10 ~ 150 ℃. Vavu yagulugufe yofewa yofewa ndiyoyenera kutsegulira ndi kutseka mbali ziwiri ndikusintha mpweya wabwino komanso payipi yochotsa fumbi. Amagwiritsidwa ntchito kwambiri pamapaipi a gasi ndi njira yamadzi yazitsulo, mafakitale opepuka, mphamvu yamagetsi ndi petrochemical system. Waya wachitsulo kupita kuchitsulo wosindikizidwa kawiri eccentric butterfly valve ndi yoyenera kutenthetsa m'tawuni, kuperekera nthunzi, madzi ndi gasi, mafuta, asidi ndi mapaipi amchere, monga zida zowongolera ndi zotsekera. Chitsulo ndi zitsulo nkhope losindikizidwa katatu eccentric gulugufe valavu akhoza ankagwiritsa ntchito mafuta, petrochemical, mankhwala, zitsulo, mphamvu yamagetsi ndi madera ena kuwonjezera ntchito monga pulogalamu ulamuliro valavu wa unit lalikulu PSA mpweya kulekana. Ndiwolowa m'malo mwa valve yachipata ndi valve yoyimitsa. Mfundo yosankhidwa ya valavu ya butterfly 1. Poyerekeza ndi valavu yachipata, valavu ya butterfly imakhala ndi mphamvu yowonjezereka, choncho ndiyoyenera kuyika mapaipi omwe ali ndi mphamvu zowonongeka 2. Monga valavu ya butterfly ingagwiritsidwe ntchito poyendetsa kayendedwe, ndiyoyenera kusankhidwa. Paipi yomwe ikufunika kuwongolera kayendedwe ka 3. Chifukwa cha kuchepa kwa ma valve a butterfly valve ndi zinthu zosindikizira, sizoyenera kutentha kwambiri komanso kuthamanga kwa mapaipi. Nthawi zambiri, kutentha ntchito ndi m'munsimu 300 ℃ ndi kuthamanga mwadzina ndi pansi PN40. 4. Chifukwa kutalika kwa valavu ya gulugufe ndi yaufupi, ndipo imatha kupangidwa kukhala mainchesi akulu, kotero ngati pakufunika kutalika kwa kapangidwe kake kapena valavu yayikulu (monga DN 1000), valavu yagulugufe iyenera kusankhidwa. 5. Chifukwa valavu ya butterfly imatha kutsegulidwa kapena kutsekedwa kokha ndi 90 ° kuzungulira, ndi bwino kugwiritsa ntchito valavu ya butterfly m'munda kumene zofunikira zotsegula ndi kutseka zimakhala mofulumira.