Pakadali pano,valavu ya gulugufendi gawo lomwe limagwiritsidwa ntchito poyendetsa ndi kulamulira kayendedwe ka mapaipi.
Yagwiritsidwa ntchito kwambiri m'magawo ambiri monga mafuta, makampani opanga mankhwala, zitsulo, magetsi amadzi ndi zina zotero. Mu ukadaulo wodziwika bwino wa ma valavu a gulugufe, mawonekedwe ake otsekera nthawi zambiri amagwiritsa ntchito kapangidwe kotsekera,
Zipangizo zotsekera ndi mphira, polytetraoxyethylene, ndi zina zotero. Chifukwa cha kuchepa kwa mawonekedwe a kapangidwe kake, sikoyenera mafakitale monga kukana kutentha kwambiri, kukana kuthamanga kwambiri, kukana dzimbiri, komanso kukana kuvala.
Valavu ya gulugufe yomwe ilipo kale ndi valavu ya gulugufe yachitsulo cholimba chotsekedwa katatu. Thupi lalikulu ndi mpando wa valavu ndi zinthu zolumikizidwa, ndipo gawo lotsekera pamwamba pa mpando wa valavu limalumikizidwa ndi zinthu zoteteza kutentha komanso zosagwirizana ndi dzimbiri.
Mphete yotsekera yofewa yokhala ndi laminated yambiri imakhazikika pa mbale ya valavu. Poyerekeza ndi valavu ya gulugufe yachikhalidwe, valavu ya gulugufe yamtunduwu imakhala ndi kukana kutentha kwambiri, ndi yosavuta kugwiritsa ntchito, ndipo ilibe kukangana potsegula ndi kutseka. Potseka, mphamvu ya njira yotumizira imawonjezeka kuti igwirizane ndi kutseka.
Sinthani magwiridwe antchito otsekera a valavu ya gulugufe komanso ubwino wotalikitsa moyo wa ntchito.
Komabe, valavu ya gulugufe iyi ikadali ndi mavuto awa mukamagwiritsa ntchito
Popeza mphete yotsekera yofewa komanso yolimba yokhala ndi laminated yokhala ndi zigawo zambiri imakhazikika pa mbale yayikulu, pamene mbale ya valve nthawi zambiri imatsegulidwa, cholumikiziracho chimapanga kukanda kwabwino pamwamba pake potsekera, ndipo gulu lofewa lotsekera mu sangweji yachitsulo lidzakhudza mwachindunji magwiridwe antchito otsekera pambuyo potsukidwa.
Popeza kapangidwe kake kali ndi malire, kapangidwe kameneka sikoyenera ma valve okhala ndi mainchesi osakwana DN200, chifukwa kapangidwe kake konse ka mbale ya valve ndi kokhuthala kwambiri ndipo kukana kwa madzi ndi kwakukulu.
Chifukwa cha mfundo ya kapangidwe kake ka eccentric katatu, chisindikizo pakati pa pamwamba pa chitseko cha valavu ndi mpando wa valavu chimadalira mphamvu ya chipangizo chotumizira kuti chikanikizire mbale yotakata motsutsana ndi mpando wa valavu. Mu mkhalidwe wabwino wa kuyenda, kuthamanga kwapakati kukakhala kwakukulu, kutsekeka kwa chitseko kumakhala kolimba.
Pamene njira yolumikizira madzi ikubwerera m'mbuyo, pamene mphamvu yapakati ikuwonjezeka, mphamvu ya unit positive pakati pa mbale ya valve ndi mpando wa valve imakhala yochepa kuposa mphamvu yapakati, chisindikizo chimayamba kutuluka.
Valavu ya gulugufe yolimba yokhala ndi mbali zitatu yokhala ndi mbali ziwiri imadziwika kuti mphete yotsekera mipando yayikulu imapangidwa ndi mapepala angapo achitsulo chosapanga dzimbiri mbali zonse ziwiri za mphete yofewa yofanana ndi T. Malo otsekera a slab ndi mpando wa valavu ndi kapangidwe ka cone yozungulira,
Pamwamba pa chitsulo chozungulira cha mbale ya valavu chimalumikizidwa ndi zinthu zosakanikirana ndi kutentha komanso dzimbiri; kasupe wokhazikika pakati pa mbale yokakamiza ya mphete yosinthira ndi bolt yosinthira ya mbale yokakamiza amasonkhanitsidwa pamodzi.
Kapangidwe kameneka kamakwaniritsa bwino malo olekerera pakati pa chivundikiro cha shaft ndi thupi la valavu komanso kusintha kwa ndodo yayikulu pansi pa kupanikizika kwapakati, ndipo kamathetsa vuto lotseka valavu mu njira yotumizira zinthu ziwiri zosinthika.
Mphete yotsekera imapangidwa ndi pepala lofewa lachitsulo chosapanga dzimbiri looneka ngati T mbali zonse ziwiri, lomwe lili ndi ubwino wowirikiza wa chisindikizo cholimba chachitsulo ndi chisindikizo chofewa, ndipo silitulutsa madzi mosasamala kanthu za kutentha kochepa komanso kutentha kwambiri.
Mayesowa akusonyeza kuti dziwe likayenda bwino (njira yoyendera ya sing'anga ndi yofanana ndi njira yozungulira ya mbale ya gulugufe), kupanikizika pamwamba pa chotsekera kumapangidwa ndi mphamvu ya chipangizo chotumizira ndi momwe kupanikizika kwapakati pa mbale ya valavu kumagwirira ntchito.
Pamene kuthamanga kwapakati kwabwino kukukwera, pamwamba pa valavu ya valve ndi pamwamba pa valavu zimakanikizidwa molimba, zimakhala bwino kutseka. Mu mkhalidwe wobwerera m'mbuyo, kutseka pakati pa valve ndi valavu kumadalira mphamvu ya chipangizo choyendetsera kuti chikanikizire valve motsutsana ndi valavu.
Pamene kuthamanga kwapakati kobwerera m'mbuyo kukukwera, pamene kuthamanga kwapakati pakati pa mbale ya valve ndi mpando wa valve kuli kochepa kuposa kuthamanga kwapakati,
Mphamvu yosungidwa ya kasupe wa mphete yosinthira ikadzadzazidwa imatha kubweza kupsinjika kwa pamwamba pa valavu ndi mpando wa valavu kuti zibwezeretse zokha.
Chifukwa chake, mosiyana ndi zomwe zidachitika kale, chitsanzo cha utility sichimayika mphete yolimba yotsekera yokhala ndi zigawo zambiri pa valavu, koma imayiyika mwachindunji pa valavu. Kuwonjezera mphete yosinthira pakati pa valavu yokakamiza ndi mpando wa valavu ndi njira yabwino kwambiri yotsekera zolimba mbali ziwiri.
Ikhoza kusintha ma valve a chipata, ma valve a globe ndi ma valve a globe.