Thevalavu yowunikira mbale ziwirindi mtundu wa valavu yoyang'ana yokhala ndi rotary actuation, koma ndi diski iwiri ndipo imatseka pansi pa kasupe. Chimbale chimakankhidwa motseguka ndi madzi apansi-mmwamba, valavu ili ndi dongosolo losavuta, chowongolera chimayikidwa pakati pa ma flanges awiri, ndipo kukula kochepa ndi kulemera kwake kumakhala kochepa.
Thevalavu yowunikira mbale ziwiriili ndi zimbale ziwiri zokhala ndi masika zooneka ngati D zoyikidwa panthambi yopingasa valavu. Kapangidwe kameneka kafupikitsa mtunda umene pakati pa mphamvu yokoka ya diski imasuntha. Kumanga kumeneku kumachepetsanso kulemera kwa diski ndi 50% poyerekeza ndi valavu yoyang'ana pa disk imodzi yofanana. Chifukwa cha katundu wa masika, valavu imachita mofulumira kwambiri kuti ibwerere.
Kumanga kwa valavu yokhala ndi ma lobe awiri opepuka kumapangitsa kusindikiza pampando ndikugwira ntchito bwino.
Kasupe wamkono wautali wa gulugufe wapawirichekeni valavuamalola chimbale kutsegula ndi kutseka popanda kusisita mpando, ndipo kasupe amachita paokha kutseka chimbale (DN150 ndi pamwamba).
Dzanja lothandizira lagulugufe wopindika pawirichekeni valavuamachepetsa kukangana ndikuchepetsa nyundo yamadzi ikachotsedwa kudzera pa disk yosiyana (bore lalikulu).
Poyerekeza ndi ochiritsirakusintha ma valve,valavu yowunikira mbale ziwiriyomanga imakhala yamphamvu, yopepuka, yaying'ono, yothandiza kwambiri, komanso yotsika mtengo. Vavu iyi imakwaniritsa muyeso wa API 594, chifukwa cha mainchesi ambiri, kukula kwa maso ndi maso kwa valavu iyi ndi 1/4 yokha ya valavu wamba, ndipo kulemera kwake ndi 15% ~ 20% ya valavu wamba, motero komanso yotsika mtengo kuposa valavu ya swing check. Ndikosavuta kukhazikitsa pakati pa ma gaskets wamba ndi ma flanges a chitoliro. Chifukwa ndi yosavuta kugwira ndipo imafuna seti imodzi yokha ya ma bolts olumikizira flange, imapulumutsanso magawo pakuyika, kupulumutsa ndalama zoyika komanso ndalama zosamalira tsiku ndi tsiku.
Valavu yoyang'ana gulugufe yawiri-flap imakhalanso ndi zida zapadera zomangira zomwe zimapangitsa kuti valavuyi ikhale yogwira ntchito kwambiri yopanda mphamvu. Izi zikuphatikiza kutsegulira kosayera, kumanga kodziyimira pawokha kwa mavavu ambiri, komanso makina odziyimira pawokha. Zina mwazinthuzi sizipezeka ndi ma cheki ma valve. Valve yoyang'ana mbale ziwiri zowola imatha kupangidwanso ndi ma lugs, ma flange awiri ndi thupi lotalikirapo.
Choyamba, kutsegula ndi kutseka ndondomeko
Kumanga kwa ma diski awiri kumakhala ndi ma diski odzaza masika (ma semi-disk) oimitsidwa papini yokhotakhota yomwe imakhala yoyimirira pakati. Madzi akamayamba kuyenda, diski imatsegulidwa ndi mphamvu (F) yomwe ikugwira ntchito pakati pa malo osindikizira. The counteractive spring support force (FS) imagwiritsidwa ntchito pamalo omwe ali kunja kwa diski ya nkhope, kuchititsa kuti muzu wa disc utseguke poyamba. Izi zimapewa kukangana pazitsulo zosindikizira zomwe zimachitika pamene diski imatsegulidwa mu ma valve akale ochiritsira, kuthetsa kuvala ndi kung'ambika pazigawo.
Kuthamanga kwa kayendedwe kake kakuchepa, kasupe wa torsion amadziwonetsera yekha, kuchititsa kuti diski itseke ndi kuyandikira pafupi ndi mpando wa thupi, kuchepetsa mtunda woyenda ndi nthawi yotseka. Madziwo akamayenda cham'mbuyo, diskiyo imasunthira pang'onopang'ono pafupi ndi mpando wa thupi, ndipo kuyankha kwamphamvu kwa valve kumathamanga kwambiri, kuchepetsa zotsatira za nyundo yamadzi ndikukwaniritsa ntchito zopanda mphamvu.
Potseka, zochita za mphamvu ya masika zimachititsa kuti pamwamba pa diski kutseke poyamba, kuteteza kuluma ndi kukangana pa muzu wa diski, kotero kuti valavu ikhoza kusunga umphumphu wa chisindikizo kwa nthawi yaitali.
2. Mapangidwe a masika odziyimira pawokha
Kumanga kasupe (DN150 ndi pamwamba) kumalola kuti torque yaikulu igwiritsidwe ntchito pa diski iliyonse ndipo diski imatseka paokha pamene kutuluka kwa mafakitale kumasintha. Mayesero asonyeza kuti zotsatirazi zachititsa kuti 25% kuwonjezeka kwa valve moyo ndi 50% kuchepetsa nyundo madzi.
Chigawo chilichonse cha diski iwiri chimakhala ndi akasupe ake omwe amapereka mphamvu yotsekera yodziyimira pawokha ndipo amatsatiridwa ndi 140 ° (mkuyu 3) m'malo mwa 350 ° ya kasupe wamba wokhala ndi mabatani awiri.
3. Kuyimitsidwa kwa disc yodziyimira payokha
Mahinji odziyimira pawokha amachepetsa kukangana ndi 66%, zomwe zimathandizira kwambiri kuyambiranso kwa valve. Chombo chothandizira chimalowetsedwa kuchokera ku hinge yakunja kotero kuti hinge yakumtunda ikhoza kuthandizidwa modziyimira payokha ndi manja apansi pakugwira ntchito kwa valve. Izi zimathandiza kuti ma disk onse azitha kuchitapo kanthu mwachangu ndikutseka nthawi imodzi, ndikukwaniritsa magwiridwe antchito abwino kwambiri.
Chachinayi, kugwirizana mode ndi payipi
Mavavu oyendera mbale ziwiri zowolandipo mapaipi amatha kulumikizidwa ndi zomangira, ma lugs, ma flanges, ndi ma clamp.
Mutha kudina patsamba lathu kuti mudziwe zambiriVavu ya Gulugufe, Yoyenda Yoyendetsedwa ndi TWS Valve (tws-valve.com)
Nthawi yotumiza: Oct-24-2024
