Posankha valve yoyenera ya mafakitale, zaulimi, kapena zamalonda, kumvetsetsa kusiyana pakati pawoma valve a butterflyndiawiri flange agulugufe mavavundizofunikira. Ma valve onsewa amagwiritsidwa ntchito kwambiri pochiza madzi, kukonza mankhwala, HVAC, ndi mafakitale amafuta ndi gasi chifukwa cha kapangidwe kake kophatikizana, kutsika mtengo, komanso kuwongolera koyenda bwino. Komabe, mapangidwe awo, njira zoyikira, ndi mawonekedwe ogwiritsira ntchito zimasiyana, zomwe zimapangitsa kuti chilichonse chikhale choyenera pamikhalidwe yake. Nkhaniyi ikufotokoza za kusiyana kwakukulu, ubwino, kuipa, ndi kagwiritsidwe ntchito ka ma valve agulugufe a lug ndi double flange kuti akutsogolereni posankha zochita.
1. Lug Butterfly Valve: Mapangidwe ndi Mawonekedwe
Mavavu agulugufe a Lug amadziwika ndi zoyikapo zopindika, kapena "malugi," pathupi la valavu, zomwe zimalola kuti ziboliboli ziwonjezeke pamapaipi. Kapangidwe kameneka kamagwiritsa ntchito ma bawuti awiri odziyimira pawokha opanda mtedza, monga ma bolts amalowera m'matumba. Kukonzekera kotereku ndi koyenera kwa ntchito zomaliza, pomwe mbali imodzi ya payipi imatha kulumikizidwa popanda kukhudza inayo.
Zofunika Kwambiri za Lug Butterfly Valves
- Zingwe Zazingwe: Malugs amapereka malo okwera mwamphamvu, zomwe zimapangitsa kuti valavu ikhale yotetezedwa mopanda chitoliro chilichonse.
- Mapangidwe Ophatikizana: Opepuka komanso aafupi kutalika, ma valve a lug amapulumutsa malo, abwino kwa makina okhala ndi zipinda zochepa.
- Kuyenda kwa Bidirectional: Ma valve otsekedwa omata amathandizira kuyenda mbali zonse, kupereka kusinthasintha.
- Kukonza Kosavuta: Kusintha kwa lug kumapangitsa kuti mbali imodzi ya payipi ichotsedwe kuti ikonzedwe popanda kukhudza inayo.
- Pressure Rating: Zoyenerana ndi zopanikizika zotsika mpaka zapakatikati, ngakhale kupsinjika kumatha kutsika pakutha kwa mzere.
- Kusinthasintha Kwazinthu: Zimapezeka muzinthu monga ductile iron, WCB, kapena chitsulo chosapanga dzimbiri, chokhala ndi mipando ngati EPDM kapena PTFE ya kukana mankhwala.
2. Valve ya Gulugufe Wawiri Wawiri: Mapangidwe ndi Zinthu
Mavavu agulugufe awiri a flange amakhala ndi ma flanges ophatikizika mbali zonse za thupi la valavu, omangika molumikizana ndi mapaipi ofananira. Kapangidwe kameneka kamapangitsa kuti pakhale kugwirizana kosasunthika, ndikupangitsa kuti ikhale yoyenera kugwiritsira ntchito mphamvu zambiri komanso zazikulu. Kamangidwe kake kolimba kamakhala ndi mphamvu zambiri.
Zofunika Kwambiri za Double Flange Butterfly Valves
- Ma Flanges Ophatikizika: Ma Flanges kumbali zonse ziwiri amalumikizana ndi mapaipi a mapaipi kudzera pa ma bolt, kuwonetsetsa kuti ali otetezeka.
- Kapangidwe Kakang'ono: Wopangidwa kuchokera kuzinthu zolimba monga WCB, chitsulo cha ductile, kapena chitsulo chosapanga dzimbiri.
- Kusindikiza Kwapamwamba: Kupanga kwa flange kumatsimikizira chisindikizo cholimba, kumachepetsa zoopsa zomwe zingatayike pamapulogalamu ovuta.
- Kuyenda kwa Bidirectional: Monga ma valve a lug, ma valve awiri a flange amathandizira kuyenda mbali zonse ziwiri.
- Diameter Yaikulu: Imakhala ndi mainchesi akulu poyerekeza ndi ma valve a lug.
3. Lug Butterfly Valve vs. Double Flange Butterfly Valve
Kuti mupange chisankho choyenera, ndikofunikira kumvetsetsa kusiyana kwakukulu pakati pa ma valve a butterfly a lug ndi ma valve awiri a butterfly. Pansipa pali kufananitsa mwatsatanetsatane kwa zinthu zofunika kwambiri:
3.1 Zomwe Zili Zofanana
- Kusinthasintha kwa Kuyika: Zonse ziwiri zimalola kuti mbali imodzi ya payipi ichotsedwe popanda kukhudza inayo, yabwino pamakina omwe amafunikira kukonza pafupipafupi kapena kudzipatula.
- Mtengo Poyerekeza ndi Mavavu Opindika: Chifukwa cha zingwe zomangika kapena ma flange apawiri, onse ndi okwera mtengo kuposa ma valve ophikira.
- Makhalidwe Ogawana:
- Thandizo la Bidirectional Flow: Mitundu yonse iwiri ya valve imalola kuyenda kumbali zonse, yoyenera machitidwe omwe ali ndi njira zosinthira madzimadzi.
- Mitundu Yosiyanasiyana: Zonsezi zitha kupangidwa kuchokera kuzinthu zofanana monga chitsulo cha kaboni, chitsulo cha ductile, kapena chitsulo chosapanga dzimbiri, chokhala ndi mipando (monga, EPDM kapena PTFE) yogwirizana ndi madzi monga madzi, mankhwala, kapena mpweya.
3.2 Kusiyana kwakukulu
3.2.1 Kuyika Njira
- Lug Butterfly Valve: Imagwiritsa ntchito mabawuti amutu umodzi kuti ilumikizane ndi mayendedwe a mapaipi. Zingwe zomangika zimalola ma bolts awiri kuti ateteze valavu mopanda mtedza, kuthandizira kutha kwa mzere ndi kukonza kosavuta.
- Valve ya Gulugufe Wawiri Wa Flange: Imakhala ndi ma flanges ophatikizika mbali zonse ziwiri, zomwe zimafunikira kuyanjanitsa ndi mapaipi ndi ma bolting. Izi zimatsimikizira kulumikizana kolimba koma kumasokoneza kukonza.
3.2.2 Kuyika kusinthasintha
- Lug Butterfly Valve: Imapereka kusinthasintha kwakukulu, chifukwa mbali imodzi imatha kulumikizidwa popanda kukhudza inayo, yabwino pamakina omwe amafunikira kukonzedwa pafupipafupi kapena kusinthidwa.
- Valve ya Gulugufe Wawiri Wa Flange: Imafunikira kuyanjanitsa ndi kukokera mbali zonse, kupanga kukhazikitsa ndi kuchotsa nthawi yambiri. Zimapereka kusinthasintha kocheperako koma kulumikizana kotetezeka kwambiri.
3.2.3 Makulidwe Oyenera
- Lug Butterfly Valve: Nthawi zambiri imachokera ku DN50 mpaka DN600.Mavavu a flange amodziikhoza kukhala njira ina ya machitidwe oletsa malo.
- Vavu ya Gulugufe Wawiri Wa Flange: Amachokera ku DN50 mpaka DN1800. Kwa mainchesi akuluakulu, mayankho okhazikika amapezeka mukafunsidwa.
3.2.4 Mtengo ndi Kulemera kwake
- Lug Butterfly Valve: Yotsika mtengo kwambiri chifukwa cha kapangidwe kake kopepuka, kuchepetsa mtengo woyika.
- Valve ya Gulugufe Wawiri Wa Flange: Wolemera komanso wokwera mtengo kwambiri chifukwa cha ma flange ophatikizika ndi zina zowonjezera. Ma valve awiri ozungulira awiri a flange angafunike chithandizo chowonjezera chifukwa cha kulemera kwawo.
3.2.5 Kusamalira ndi Kusokoneza
- Lug Butterfly Valve: Yosavuta kusokoneza ndikuyisamalira, popeza mbali imodzi imatha kuchotsedwa popanda kukhudza inayo.
- Valve ya Gulugufe Wawiri Wa Flange: Ogwira ntchito kwambiri kuti asungunuke chifukwa cha ma bawuti ambiri komanso zofunikira zoyendera bwino.
4. Mapeto
Kusankha pakati pa zofewa zosindikizidwavalavu ya butterflyndi avalavu ya butterfly iwirizimatengera zosowa zanu zenizeni. Mavavu agulugufe a Lug amapambana pamapulogalamu omwe amafunikira kukonzedwa pafupipafupi komanso kukhazikitsa kocheperako. Mavavu agulugufe ang'onoang'ono awiri, okhala ndi chisindikizo champhamvu, ndi oyenerera mapaipi akulu akulu ndi ntchito zovuta. Mwakuwunika zinthu monga kupanikizika, kukonza, malo, ndi bajeti, mutha kusankha valavu yomwe imakulitsa magwiridwe antchito komanso kutsika mtengo.