Mavavu a butterflyzili ponseponse m'mafakitale ogwiritsira ntchito ndipo ndizofunikira kwambiri poyendetsa kayendedwe ka madzi osiyanasiyana m'mapaipi.Chofunika kwambiri posankha ndi kugwiritsa ntchito valavu ya gulugufe ndi kupanikizika kwake kwakukulu.Kumvetsetsa izi ndikofunikira pakuwonetsetsa kuti kachitidwe kamadzimadzi kakuyenda bwino komanso kotetezeka.
M'nkhaniyi, tiwona momwe valavu yagulugufe imatha kupirira, tiwonanso momwe ma valve agulugufe amapangidwira, zinthu, kusindikiza, ndi zina zambiri.
Kodi kuthamanga kwakukulu ndi kotani?
Kuthamanga kwakukulu kwa valve ya butterfly kumatanthawuza kupanikizika kwakukulu komwe valavu ya gulugufe imatha kugwira ntchito bwino popanda kusokoneza kapena kusokoneza ntchito.Zotsatirazi ndi zifukwa zingapo zomwe zimatsimikizira kuchuluka kwa kuthamanga kwa gulugufe
1. Zida za valve ya butterfly
Zida zomwe zimagwiritsidwa ntchito popanga thupi la valavu, mbale ya valve, tsinde la valavu ndi mpando wa valve ndizofunikira kwambiri pozindikira kupanikizika kwa valve ya butterfly.Zida zokhala ndi mphamvu zolimba kwambiri, kukana kwa dzimbiri komanso kukhazikika kwa kutentha zimatha kupirira zovuta zambiri.Mwachitsanzo, mavavu agulugufe osapanga dzimbiri amatha kupirira zovuta zambiri chifukwa cha kukana kwawo kwa dzimbiri komanso mphamvu zawo.
Thempando wa valvezinthu zosindikizirazidzakhudzanso mphamvu yonyamula mphamvu ya gulugufe.Mwachitsanzo, EPDM, NBR, ndi zina zambiri ndi zida zosindikizira za rabara, koma mphamvu zawo zonyamula mphamvu ndizochepa.Pazinthu zomwe zimafunikira kuti zipirire kupsinjika kwakukulu, zida zina zosindikizira zosagwira ntchito zitha kusankhidwa.
2. Mapangidwe a valve ya butterfly
Mapangidwe a valavu ya gulugufe ndi chinthu china chofunikira chomwe chimakhudza kupanikizika kwa valve ya butterfly.Mwachitsanzo, valavu yagulugufe yosindikizira yofewa nthawi zambiri imagwiritsidwa ntchito pamakina otsika, omwe ndi PN6-PN25.Kapangidwe ka ma valve agulugufe wopangidwa ndi ma eccentric awiri amathandizira kuti ntchito yosindikiza ikhale yabwino posintha kapangidwe ka mbale ya gulugufe ndi mpando wa vavu kuti usavutike kwambiri.
3. Gulugufe valavu thupi khoma makulidwe
Pali mgwirizano wofanana pakati pa kukula kwa makulidwe a khoma la valavu ndi kupanikizika.Kaŵirikaŵiri kuwonjezereka kwa mphamvu ya valavu, thupi lagulugufe limakhala lolimba kuti ligwirizane ndi mphamvu zomwe zimachitika pamene mphamvu yamadzimadzi ikuwonjezeka.
4. Miyezo yopangira ma valve a butterfly
Maonekedwe a vavu ya gulugufe adzasonyeza mphamvu yaikulu imene angapirire.Mavavu agulugufe amapangidwa motsatira API (American Petroleum Institute), ASME (American Society of Mechanical Engineers), ISO (International Organisation for Standardization) ndi miyezo ina yamakampani, ndipo amayesedwa mwamphamvu ndikuwunika kuwonetsetsa kuti valavu yagulugufe ikukumana ndi zomwe zatchulidwa. kuthamanga mlingo.
Kodi Mavavu a Gulugufe Abwino Pakuthamanga Kwambiri?
Mavavu agulugufe amatha kugawidwa m'mavavu agulugufe, mavavu agulugufe otsika, mavavu agulugufe apakati, ndi ma valve agulugufe othamanga kwambiri malinga ndi kukakamiza mwadzina.
1).Vacuum butterfly valve — valve ya gulugufe yomwe mphamvu yake yogwira ntchito imakhala yocheperapo poyerekeza ndi mphamvu ya mumlengalenga.
2).Low kuthamanga agulugufevalavu-valavu yagulugufe yokhala ndi mphamvu yadzina PN yochepera 1.6MPa.
3).Vavu yagulugufe wapakatikati—vavu yagulugufe yokhala ndi mphamvu yadzina PN 2.5 ~ 6.4MPa.
4).Vavu yagulugufe yothamanga kwambiri—valavu yagulugufe yokhala ndi mphamvu yadzina PN10.0 ~ 80.0MPa.
Kuthamanga kwakukulu kwa vavu ya gulugufe kuli ngati mphamvu yachidule ya chidebe.Kuchuluka kwa madzi kumadalira mbale yaifupi kwambiri.N'chimodzimodzinso ndi kuthamanga kwambiri kwa valve ya butterfly.
Ndiye timadziwa bwanji kuchuluka kwa kuthamanga kwambiri?
Njira yodziwira kuchuluka kwa kuthamanga kwa vavu ya gulugufe ndi mndandanda wa mayeso opangidwa ndi wopanga kuti awone momwe valavu ikuyendera ndikuzindikira kuchuluka kwake.Mayesowa angaphatikizepo:
1. Kusanthula kwazinthu
Pangani kusanthula kwazitsulo pazigawo zamagulugufe kuti mutsimikizire zakuthupi, ndikuyesa makina kuti muwonetsetse kuti valavu yagulugufe ikukwaniritsa zofunikira zamphamvu, ductility, ndi zina zambiri.
2. Kuyesa kwa Hydrostatic
Vavu imakhala ndi mphamvu yamadzimadzi mopitilira mphamvu yake (nthawi zambiri imakhala yozungulira kapena yotentha) kuti iwunikire momwe imapangidwira komanso momwe imagwirira ntchito.
1).Kukonzekera musanayesedwe
Musanayambe kuyezetsa butterfly valve hydraulic test, zotsatirazi ziyenera kupangidwa:
a)Yang'anani kukhulupirika kwa zida zoyesera kuti muwonetsetse kuti mayesowo atha kuchitidwa mosamala komanso moyenera.
b)Onetsetsani kuti valavu ya butterfly yaikidwa bwino ndipo kugwirizana ndi makina oyezera kupanikizika kumasindikizidwa bwino.
c)Sankhani pampu yamadzi yokhala ndi kuthamanga koyenera kuti muwonetsetse kuti kuthamanga kwa mayeso ndi kuthamanga kwa kuthamanga kumakwaniritsa zofunikira.
d)Chotsani zinyalala zomwe zingakhudze zotsatira zoyezetsa panthawi ya mayeso ndikuwonetsetsa kuti malo oyeserera ndi aukhondo komanso mwadongosolo.
2).Masitepe oyesera
a)Choyamba kutseka valavu pa agulugufe valavu, ndiye mutsegule mpope madzi, ndipo pang'onopang'ono kuonjezera kuthamanga kwa madzi kufika kukakamiza mayeso.
b)Pitirizani kukakamiza kuyesa kwa nthawi ndikuwonetsetsa ngati pali kutayikira kuzungulira valavu ya gulugufe.Ngati pali kutayikira, kuyenera kuthetsedwa munthawi yake.
c)Pambuyo pa nthawi yoyesera, pang'onopang'ono muchepetse kuthamanga kwa madzi ndikuyeretsa valavu ya butterfly ndi makina oyezera kuthamanga kuti mupewe madontho a madzi atatha kuyesedwa.
3).Njira zoyesera
Pali njira zotsatirazi zoyezera ma valve a butterfly hydraulic:
a)Njira yoyesera yolimba: Imitsani mpope wamadzi, sungani kukakamiza kwa maola 1-2, ndikuwona ngati pali kutayikira mozungulira valavu yagulugufe.
b)Njira yoyesera yamphamvu: Pamene mukusunga kuyesa ndi kukakamiza, tsegulani valavu yagulugufe, onani ngati valavu ikugwira ntchito bwino, ndipo muwone ngati pali kutayikira mozungulira.
c)Kuyesa kuthamanga kwa mpweya: Ikani mphamvu ya mpweya kapena gasi ku vavu ya gulugufe kuti muyerekeze momwe zimagwirira ntchito ndikuwunika momwe zimayendera pakasinthasintha kuti muwonetsetse kuti ikugwira ntchito modalirika pamikhalidwe yamphamvu.
d)Mayeso apanjinga: Vavu yagulugufe imayendetsedwa mobwerezabwereza pakati pa malo otseguka ndi otsekedwa pansi pa zovuta zosiyanasiyana kuti awone kulimba kwake ndi kusindikiza kukhulupirika kwake.
N'chifukwa chiyani muyenera kudziwa kuchuluka kwa mphamvu ya valavu ya gulugufe?
Kuzindikira kuchuluka kwa kuthamanga kwambiri kumakupatsani mwayi wosankha valavu yagulugufe yoyenera kuti mugwiritse ntchito ndikuwonetsetsa kuti mukugwira ntchito motetezeka mkati mwa malire omwe akukakamizidwa.
1. Kugwirizana kwa Ntchito
Sankhani valavu yagulugufe yokhala ndi kupanikizika komwe kumapitilira kuthamanga kwambiri komwe kungachitike pamapaipi kuti mupewe kudzaza kwa vavu yagulugufe.
2. Kuganizira za kutentha
Ganizirani kusintha kwa kutentha kwa madzimadzi, osati chifukwa cha kuwonjezereka kwa kutentha ndi kutsika.Kutentha kwapamwamba kudzachititsa kuwonjezeka kwa kuthamanga kwamadzimadzi, ndipo kutentha kwakukulu kumakhudza zinthu za valve ndikuchepetsa mphamvu yake yogwiritsira ntchito mphamvu.
3. Kuteteza Kuthamanga Kwambiri
Ikani zida zoyenera zothandizira kupanikizika kapena ma suppressors kuti muchepetse kuthamanga ndikuteteza valavu ya gulugufe ku ma spikes adzidzidzi omwe amapitilira mphamvu yake.
Mwachidule, kuthamanga kwakukulu komwe avalavu ya butterflyimatha kupirira imatsimikiziridwa ndi kapangidwe kake, zinthu, kapangidwe kake, ndi njira yosindikizira.Kuthamanga kwakukulu ndi gawo lofunikira kwambiri kuti mutsimikizire kuti ma valve agulugufe akugwira ntchito motetezeka komanso moyenera.Pomvetsetsa zinthu zomwe zimakhudza kupanikizika, momwe zimatsimikiziridwa, komanso momwe zimakhudzira kusankha ndi kugwiritsa ntchito valavu ya butterfly, valavu yoyenera ya butterfly ikhoza kusankhidwa bwino kuti iwonetsetse chitetezo ndi ntchito ya valavu ya butterfly pa ntchito.