Mavavu agulugufe ndi zinthu zofunika kwambiri pakuwongolera kayendedwe ka mapaipi m'mafakitale osiyanasiyana.Mwa mitundu yosiyanasiyana yomwe ilipo, mavavu agulugufe wawafer ndi flange ndi mavavu agulugufe amtundu umodzi amawonekera chifukwa cha mawonekedwe awo apadera komanso ntchito zawo.Pakuwunikaku kofananiraku, tiwona kapangidwe kake, magwiridwe antchito, zabwino, ndi malire amitundu itatuyi kuti timvetsetse kuyenerera kwawo muzochitika zosiyanasiyana.
MMODZI.Mawu Oyamba
1. Kodi valavu yagulugufe ya wafer ndi chiyani
Wafer Butterfly Valve: Valavu yamtunduwu idapangidwa kuti ikhazikike pakati pa zitoliro ziwiri, nthawi zambiri zimakhala ndi flange.Ili ndi mbiri yocheperako yokhala ndi mbale ya valve yomwe imazungulira pa shaft kuti ilamulire kuyenda.
Ubwino wa valavu ya butterfly:
· Valve ya butterfly yamtundu wa wafer imakhala ndi kutalika kwaufupi, zomwe zikutanthauza kuti ndizochepa thupi, zomwe zimapangitsa kuti zikhale zoyenera kwambiri kwa malo okhala ndi malo ochepa.
· Amapereka njira ziwiri, kutseka kolimba ndipo ndi oyenera machitidwe omwe ali ndi zofunikira zochepa mpaka zapakati.
· Ubwino waukulu wa valavu yagulugufe wa wafer ndi kapangidwe kake kakang'ono.
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2. Kodi valavu ya butterfly ndi chiyani
Flange butterfly valve: Vavu ya gulugufe wa flange imakhala ndi mbali zonse ziwiri ndipo imatha kumangirizidwa pakati pa ma flanges omwe ali mupaipi.Poyerekeza ndi ma valve otsina, amakhala ndi kutalika kwa zomangamanga.
Ubwino wa valavu ya butterfly ya flange:
· The valavu gulugufe flange ali mapeto flange kuti mwachindunji bolts kwa chitoliro flange.Kukonzekera kumeneku kumawonjezera kulimba ndi kukhazikika, ndikupangitsa kuti ikhale yoyenera kugwiritsira ntchito magetsi apamwamba kumene kugwirizana kotetezeka kumakhala kofunikira.
• Mavavu agulugufe a Flange nawonso ndi osavuta kuyika ndi kusungunula, motero kumathandizira kukonza ndi kupulumutsa ndalama.
· Vavu ya butterfly ya flange imatha kukhazikitsidwa kumapeto kwa payipi ndikugwiritsidwa ntchito ngati valavu yomaliza.
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3.Kodi valavu imodzi ya butterfly ndi chiyani
Mapangidwe avalavu imodzi ya butterflyndikuti pali flange imodzi mkatikati mwa thupi la valve, yomwe iyenera kukhazikitsidwa pa flange ya chitoliro ndi ma bolt aatali.
Ubwino wa single flange butterfly valve:
· Ili ndi kutalika kwa valavu yagulugufe ndipo imakhala ndi malo ang'onoang'ono.
· Makhalidwe olumikizana olimba ndi ofanana ndi ma valve agulugufe wa flange.
· Yoyenera kwa machitidwe apakati komanso otsika kwambiri.
ZIWIRI.kusiyana kwake
1. Miyezo yolumikizira:
a) Valavu yagulugufe ya Wafer: Vavu iyi nthawi zambiri imakhala yolumikizana ndipo imatha kukhala yogwirizana ndi DIN PN6/PN10/PN16, ASME CL150, JIS 5K/10K, ndi zina zambiri.
b) Vavu yagulugufe ya Flange: nthawi zambiri imakhala yolumikizirana imodzi.Gwiritsani ntchito malumikizidwe ofanana a flange okha.
c) Valavu imodzi yagulugufe ya flange: nthawi zambiri imakhala ndi cholumikizira chimodzi chokha.
2. Kukula kwake
a) Wafer gulugufe valavu: DN15-DN2000.
b) Vavu yagulugufe ya Flange: DN40-DN3000.
c) Single flange gulugufe vavu: DN700-DN1000.
3. Kuyika:
a) Kuyika mavavu agulugufe:
Kuyika ndikosavuta chifukwa kumatha kuyikidwa pakati pa ma flanges awiri pogwiritsa ntchito mabawuti anayi aatali.Maboti amadutsa mu flange ndi ma valve, kukhazikitsidwa uku kumathandizira kukhazikitsa ndikuchotsa mwachangu.
b) Kuyika valavu ya butterfly:
Popeza pali ma flanges ofunikira mbali zonse ziwiri, ma valve a flange ndi akulu ndipo amafuna malo ochulukirapo.Amakhazikika mwachindunji ku chitoliro cha chitoliro chokhala ndi zipilala zazifupi.
c) Kuyika valavu imodzi ya butterfly:
kumafuna mabawuti aatali amitu iwiri okhazikika pakati pa ma flanges awiri a chitoliro.Chiwerengero cha mabawuti ofunikira chikuwonetsedwa patebulo pansipa.
| Chithunzi cha DN700 | Chithunzi cha DN750 | DN800 | DN900 | DN1000 |
| 20 | 28 | 20 | 24 | 24 |
4. Mtengo:
a) Vavu yagulugufe ya Wafer: Poyerekeza ndi ma valve a flange, mavavu ophatikizika amakhala otsika mtengo.Kutalika kwawo kwaufupi kumafunikira zinthu zochepa ndipo kumangofunika mabawuti anayi okha, motero kuchepetsa ndalama zopangira ndi kukhazikitsa.
b) Flange Butterfly Valve: Ma valve a Flange amakhala okwera mtengo kwambiri chifukwa cha zomangamanga zolimba komanso flange.Ma bolts ndi kuyika kofunikira pakulumikiza kwa flange kumabweretsa mtengo wokwera.
c) Valovu imodzi ya butterfly:
Valve ya butterfly yamtundu umodzi imakhala ndi flange imodzi yocheperapo kuposa valavu ya butterfly yawiri-flange, ndipo kukhazikitsa kumakhala kosavuta kuposa valavu ya butterfly yawiri, kotero mtengo uli pakati.
5. Mulingo wopanikizika:
a) Valovu yagulugufe ya Wafer: Poyerekeza ndi valavu ya flange, mphamvu yogwira ntchito ya valavu ya butterfly ndi yotsika.Iwo ndi oyenera otsika voteji PN6-PN16 ntchito.
b) Valve ya butterfly ya Flange: Chifukwa cha mawonekedwe ake olimba ndi flange yofunikira, valavu ya flange ndi yoyenera kupanikizika kwambiri, PN6-PN25, (ma valve agulugufe osindikizidwa mwamphamvu amatha kufika ku PN64 kapena kupitirira).
c) Valavu imodzi yagulugufe ya flange: pakati pa valavu yagulugufe yagulugufe ndi valavu ya butterfly, yoyenera kugwiritsa ntchito PN6-PN20.
6. Ntchito:
a) Wafer Butterfly Valve: Amagwiritsidwa ntchito kwambiri m'makina a HVAC, malo opangira madzi ndi mafakitale ocheperako pomwe malo amakhala ochepa komanso mtengo wake ndi wofunikira.Kuti agwiritsidwe ntchito pamapaipi pomwe malo amakhala ochepa komanso madontho otsika kwambiri amavomerezedwa.Amapereka kuwongolera kwachangu, kogwira mtima pamtengo wotsika kwambiri kuposa ma valve a flanged.
b) Valavu ya butterfly ya Flange: Ma valve a Flange amagwiritsidwa ntchito m'mafakitale monga mafuta ndi gasi, kukonza mankhwala ndi kupanga magetsi, komwe kukhathamiritsa kwakukulu komanso kusindikiza kwabwino ndikofunikira.Chifukwa mavavu agulugufe a flange amatha kutulutsa kuthamanga kwambiri komanso kusindikiza bwino komanso kulumikizana mwamphamvu.Ndipo valavu ya butterfly ya flange imatha kukhazikitsidwa kumapeto kwa payipi.
c) Valovu imodzi ya butterfly:
Single flange agulugufe mavavu amagwiritsidwa ntchito kachitidwe madzi m'tauni, kachitidwe mafakitale monga mankhwala, mafuta mafuta ndi mafakitale zinyalala, malamulo Kutentha kapena kuzirala madzi mu machitidwe HVAC, zimbudzi, mafakitale chakudya ndi chakumwa ndi zina.
ATATU.Pomaliza:
Mavavu agulugufe wawafer, ma valve agulugufe a flange ndi ma valve agulugufe amodzi onse ali ndi maubwino apadera ndipo ndi oyenera kugwiritsa ntchito mosiyanasiyana.Mavavu agulugufe wa Wafer amakondedwa chifukwa cha kutalika kwawo kwakanthawi kochepa, kapangidwe kawo kaphatikizidwe, magwiridwe antchito okwera mtengo komanso kuyika kosavuta.Ma valve a butterfly a single flange ndi abwino kwa machitidwe apakati komanso otsika omwe ali ndi malo ochepa chifukwa cha mawonekedwe awo aafupi.Ma valve opindika, kumbali ina, amapambana pamapulogalamu apamwamba kwambiri omwe amafunikira kusindikiza kwabwinoko komanso zomangamanga zolimba, koma ndizokwera mtengo kwambiri.
Mwachidule, ngati chilolezo cha chitoliro ndi chochepa ndipo kupanikizika ndi kupanikizika kochepa kwa DN≤2000 dongosolo, mukhoza kusankha valve yagulugufe;
Ngati chilolezo cha chitoliro chili chochepa ndipo kupanikizika ndipakati kapena kutsika, 700≤DN≤1000, mukhoza kusankha valavu imodzi ya butterfly;
Ngati chilolezo cha chitoliro ndi chokwanira ndipo kupanikizika ndipakati kapena kutsika kwa DN≤3000 dongosolo, mukhoza kusankha valavu ya butterfly ya flange.