Pakali pano, avalavu ya butterflyndi gawo lomwe limagwiritsidwa ntchito kuzindikira kuwongolera ndi kuwongolera kayendedwe ka mapaipi.
Zakhala zikugwiritsidwa ntchito m'madera ambiri monga mafuta, mafakitale a mankhwala, zitsulo, hydropower ndi zina zotero.Muukadaulo wodziwika bwino wa ma valve a butterfly, mawonekedwe ake osindikizira nthawi zambiri amatenga mawonekedwe osindikizira,
Zomwe zimasindikizidwa ndi mphira, polytetraoxyethylene, ndi zina zotero.
Vavu yagulugufe yomwe ilipo yotsogola kwambiri ndi valavu yagulugufe yolimba patatu.Thupi lalikulu ndi mpando wa valve ndizogwirizana, ndipo chosindikizira pamwamba pa mpando wa valavu ndi wowotcherera ndi zipangizo za alloy zosagwira kutentha komanso corrosion.
Mphete yosindikizira yamitundu yambiri yofewa imayikidwa pa mbale ya valve.Poyerekeza ndi valavu yagulugufe, mtundu uwu wa agulugufe umalimbana ndi kutentha kwambiri, umakhala wosavuta kugwira ntchito, ndipo umakhala wopanda phokoso potsegula ndi kutseka.Potseka, torque ya njira yotumizira imawonjezeka kuti ibwezere kusindikiza.
Limbikitsani magwiridwe antchito a gulugufe komanso ubwino wotalikitsa moyo wautumiki.
Komabe, valavu yagulugufeyi imakhalabe ndi mavuto otsatirawa pakagwiritsidwe ntchito
Popeza mphete yosindikizira yamitundu yambiri yofewa komanso yolimba imayikidwa pa mbale yotakata, pamene mbale ya valve imakhala yotseguka, sing'angayo idzapanga kukwapula kwabwino pamtunda wake wosindikiza, ndipo gulu losindikizira lofewa mu sangweji yachitsulo. zimakhudza ntchito yosindikiza pambuyo poyankhidwa.
Pang'onopang'ono ndi momwe zimakhalira, kapangidwe kameneka sikoyenera kwa ma valve okhala ndi m'mimba mwake pansi pa DN200, chifukwa mawonekedwe onse a mbale ya valve ndi wandiweyani kwambiri ndipo kukana koyenda ndi kwakukulu.
Chifukwa cha kapangidwe ka katatu ka eccentric, chisindikizo pakati pa malo osindikizira a valavu ndi mpando wa valavu zimadalira torque ya chipangizo chotumizira kukanikizira mbale yotakata kumpando wa valve.M'malo oyenda bwino, kuthamanga kwapakatikati kumakhala kokulirapo, kumawonjezera kusindikiza kosindikiza.
Sing'anga yothamanga ikabwerera m'mbuyo, kupanikizika kwapakati kumawonjezeka, kupanikizika kwapakati pakati pa mbale ya valve ndi mpando wa valve kumakhala kochepa kuposa kuthamanga kwapakatikati, chisindikizo chimayamba kutsika.
Valavu yagulugufe yosindikizira yamphamvu kwambiri yanjira ziwiri imadziwika chifukwa mphete yosindikizira yokhala ndi mipando yayikulu imakhala ndi zigawo zingapo zazitsulo zosapanga dzimbiri mbali zonse ziwiri za mphete yofewa yooneka ngati T.Kusindikiza pamwamba pa slab ndi mpando wa valve ndi mawonekedwe a oblique cone,
Pamwamba pa oblique cone ya valavu mbale ndi welded ndi kutentha zosagwira ndi dzimbiri zosagwira aloyi zipangizo;kasupe wokhazikika pakati pa mbale yoponderezedwa ya mphete yosinthira ndi bolt yosinthira ya mbale yokakamiza imasonkhanitsidwa palimodzi.
Kapangidwe kameneka kamakwaniritsa bwino malo olekerera pakati pa mawondo a shaft ndi thupi la valavu ndi mapindikidwe otanuka a ndodo yotakata pansi pa kupanikizika kwapakati, ndikuthetsa vuto losindikiza la valve mu njira ziwiri zosinthira zosinthika.
Mphete yosindikizira imapangidwa ndi pepala lofewa lokhala ndi mawonekedwe amtundu wa T, mbali zonse ziwiri, lomwe lili ndi maubwino awiri achitsulo chosindikizira cholimba komanso chosindikizira chofewa, ndipo chimakhala ndi kusindikiza kwa zero kutayikira mosasamala kanthu za kutentha kochepa komanso kutsika kwambiri. kutentha.
Chiyesocho chimatsimikizira kuti pamene dziwe likuyenda bwino (mayendedwe othamanga a sing'anga ndi ofanana ndi njira yozungulira ya gulugufe), kupanikizika pamtunda wosindikiza kumapangidwa ndi torque ya chipangizo chotumizira ndi zochita za sing'anga kuthamanga pa valavu mbale.
Pamene kuthamanga kwapakati kwabwino kumawonjezeka, kulimba kwa oblique cone pamwamba pa mbale ya valve ndi kusindikiza pamwamba pa mpando wa valavu kumakanikizidwa, kumapangitsanso kusindikiza bwino.M'malo obwerera m'mbuyo, chisindikizo pakati pa mbale ya valve ndi mpando wa valve chimadalira mphamvu ya chipangizo choyendetsa galimoto kuti ikanize mbale ya valve pampando wa valve.
Ndi kuwonjezeka kwa reverse sing'anga kupanikizika, pamene chigawo chapakati pa mbale ya valve ndi mpando wa valve ndi wocheperapo kusiyana ndi kuthamanga kwapakati,
Mphamvu yosungidwa yosinthika ya kasupe wa mphete yosinthira ikatha kunyamulidwa imatha kubweza kukakamizidwa kolimba kwa malo osindikizira a mbale ya valavu ndi mpando wa valavu kuti uzingobwezera.
Choncho, mosiyana ndi luso lakale, chitsanzo chothandizira sichiyika mphete yosindikizira yamitundu yambiri pa mbale ya valve, koma imayika mwachindunji pa thupi la valve.Kuwonjezera mphete yosinthira pakati pa mbale yoponderezedwa ndi mpando wa valve ndi njira yabwino kwambiri yosindikizira yolimba kwambiri..
Ikhoza kusintha ma valve a zipata, ma valve a globe ndi ma valve a globe.