A valavu ya butterflyndi chipangizo chowongolera madzimadzi. Imagwiritsa ntchito kuzungulira kwa 1/4 kuwongolera kuyenda kwa media munjira zosiyanasiyana. Kudziwa zida ndi ntchito za ziwalozo ndikofunikira. Zimathandiza kusankha valavu yoyenera kuti mugwiritse ntchito. Chigawo chilichonse, kuchokera ku thupi la valve kupita ku tsinde la valve, chimakhala ndi ntchito yake. Amapangidwa ndi zipangizo zoyenera kugwiritsa ntchito. Zonsezi zimagwira ntchito yofunika kwambiri poonetsetsa kuti zikugwira ntchito bwino komanso kukonza bwino. Kumvetsetsa koyenera kwa zigawozi kungathe kupititsa patsogolo machitidwe a machitidwe ndi moyo wautumiki. Ma valve a butterfly amagwiritsidwa ntchito m'magawo ambiri chifukwa cha kusinthasintha kwawo. Mafakitale monga kuthira madzi, kukonza mankhwala, chakudya ndi zakumwa amagwiritsa ntchito ma valve awa. Mavavu agulugufe amatha kuthana ndi zovuta zosiyanasiyana komanso kutentha. Chifukwa chake, zimagwirizana ndi malo ofunikira kwambiri komanso ocheperako. Kuonjezera apo, mtengo wotsika komanso kuphweka kwa kukhazikitsa kumapangitsa kuti zikhale zosiyana pakati pa ma valve ambiri.
1. Gulugufe Wavu Gawo Dzina: Vavu thupi
Thupi la agulugufe ndi chipolopolo. Imathandizira ma valve disc, mpando, tsinde, ndi actuator. Thegulugufe vavu thupiamagwiritsidwa ntchito kulumikiza ku payipi kuti valavu ikhale pamalo ake. Komanso, thupi la valavu liyenera kupirira zovuta ndi zochitika zosiyanasiyana. Chifukwa chake, kapangidwe kake ndi kofunikira pakuchita bwino.
Vavu thupi zakuthupi
Zida za thupi la vavu zimatengera payipi ndi media. Zimadaliranso chilengedwe.
Zotsatirazi ndizogwiritsidwa ntchito kwambiri.
-Kuponya chitsulo, mtundu wotchipa kwambiri wa valavu yagulugufe yachitsulo. Ili ndi kukana kwabwino kovala.
-Chitsulo chachitsulo, poyerekeza ndi chitsulo choponyedwa, chimakhala ndi mphamvu zabwino, kuvala kukana komanso ductility bwino. Choncho ndi oyenera ntchito wamba mafakitale.
-Chitsulo chosapanga dzimbiri, ali ndi kukhazikika kwakukulu ndi kukana dzimbiri. Ndikwabwino kumadzi owononga komanso kugwiritsa ntchito ukhondo.
-WCB,ndi kuuma kwake kwakukulu ndi mphamvu zake, ndizoyenera kugwiritsira ntchito kuthamanga kwambiri, kutentha kwambiri. Ndipo ndi weldable.
2. Gulugufe Vavu Gawo Dzina: Vavu chimbale
Thevalavu ya butterfly disclili pakati pa valavu thupi ndi atembenuza kutsegula kapena kutseka valavu gulugufe. Zinthuzo zikukhudzana mwachindunji ndi madzimadzi. Chifukwa chake, iyenera kusankhidwa potengera zomwe sing'angayo ali nayo. Zida zodziwika bwino zimaphatikizapo plating nickel plating, nayiloni, mphira, chitsulo chosapanga dzimbiri, ndi mkuwa wa aluminiyamu. Kapangidwe kakang'ono ka disc ya vavu kumatha kuchepetsa kukana kwamadzi, potero kupulumutsa mphamvu ndikuwongolera magwiridwe antchito a valavu yagulugufe.
mitundu ya ma valve disc.
Vavu chimbale mtundu: Pali mitundu ingapo ya mavavu zimbale ntchito zosiyanasiyana.
- Valve disc yokhazikikazimagwirizana ndi pakati pa valavu thupi. Ndi yosavuta komanso yotsika mtengo.
- Double eccentric valve discali ndi chingwe cha rabara chomwe chili m'mphepete mwa mbale ya valve. Ikhoza kupititsa patsogolo ntchito yosindikiza.
The triple eccentric discndi zitsulo. Imasindikiza bwino komanso imavala pang'ono, kotero ndi yabwino kumadera opanikizika kwambiri.
3. Gulugufe Vavu Gawo Dzina: Tsinde
Tsinde limagwirizanitsa disk box actuator. Imatumiza kasinthasintha ndi mphamvu yofunika kutsegula kapena kutseka valavu yagulugufe. Chigawochi chimagwira ntchito yofunika kwambiri pamakina a gulugufe. Tsinde liyenera kupirira torque yambiri komanso kupsinjika panthawi yogwira ntchito. Choncho, zofunika zakuthupi zofunika ndi mkulu.
Zida za tsinde la valve
Tsinde nthawi zambiri limapangidwa ndi zinthu zolimba, monga chitsulo chosapanga dzimbiri ndi mkuwa wa aluminiyamu.
-Chitsulo chosapanga dzimbirindi yamphamvu komanso yosamva dzimbiri.
-Aluminiyamu mkuwaamatsutsa bwino kwambiri. Amatsimikizira kudalirika kwa nthawi yayitali.
-Zida zinazingaphatikizepo zitsulo za carbon kapena alloys. Amasankhidwa pazofunikira zenizeni zogwirira ntchito.
4. Gulugufe Vavu Gawo Dzina: Mpando
Mpando mu valve butterfly umapanga chisindikizo pakati pa diski ndi thupi la valve. Vavu ikatsekedwa, chimbalecho chimafinya mpando. Izi zimalepheretsa kutayikira ndikupangitsa kuti mapaipi asamayende bwino.
Thempando wa butterfly valveiyenera kupirira zovuta zosiyanasiyana ndi kutentha. Kusankhidwa kwa zinthu zapampando kumadalira ntchito yeniyeni. Rubber, silikoni, Teflon ndi elastomers ena ndi kusankha wamba.
Mitundu ya mipando ya vavu
Pali mitundu ingapo ya mipando kukumana ntchito zosiyanasiyana. Mitundu yodziwika kwambiri ndi:
-Mipando yofewa ya valve: Wopangidwa ndi mphira kapena Teflon, amasinthasintha komanso okhazikika. Mipando iyi ndi yabwino kwa ntchito zotsika kwambiri, zomwe zimafunikira kutsekedwa mwamphamvu.
-Mipando yonse yazitsulo zazitsulo: amapangidwa ndi zitsulo, ngati chitsulo chosapanga dzimbiri. Amatha kupirira kutentha ndi kupanikizika. Mipando ya valve iyi ndi yoyenera kumadera ovuta omwe amafunikira kukhazikika.
-Mipando yamavavu ambiri: Wopangidwa ndi graphite ndi zitsulo zodzaza nthawi imodzi. Amaphatikiza makhalidwe a mipando yofewa ya valve ndi mipando yazitsulo zazitsulo. Chifukwa chake, Mpando wamitundu yambiri uwu umakwaniritsa bwino pakati pa kusinthasintha ndi mphamvu. Mipando ya valve iyi ndi ya ntchito zosindikizira kwambiri. Amatha kusindikiza ngakhale atavala.
5. Woyambitsa
The actuator ndi njira yomwe imagwiritsa ntchito valve ya butterfly. Imatembenuza mbale ya valve kuti itsegule kapena kutseka kutuluka. The actuator ikhoza kukhala yamanja (chogwirira kapena giya mphutsi) kapena automatic (pneumatic, magetsi, kapena hydraulic).
Mitundu ndi zipangizo
-Nkhani:Zopangidwa ndi chitsulo kapena chitsulo chosungunula, zoyenera mavavu agulugufe a DN≤250.
- Zida za mphutsi:Oyenera mavavu agulugufe amtundu uliwonse, opulumutsa antchito komanso otsika mtengo. Ma gearbox atha kupereka mwayi wamakina. Zimapangitsa kuti zikhale zosavuta kugwiritsa ntchito ma valve akuluakulu kapena othamanga kwambiri.
- Pneumatic actuators:gwiritsani ntchito mpweya woponderezedwa kuti mugwiritse ntchito ma valve. Nthawi zambiri amapangidwa ndi aluminiyamu kapena chitsulo.
- Ma actuators amagetsi:amagwiritsa ntchito ma motors amagetsi ndipo amaikidwa m'nyumba zopangidwa ndi zinthu monga aluminiyamu kapena zitsulo zosapanga dzimbiri. Pali mitundu yofunikira komanso yanzeru. Mitu yamagetsi yopanda madzi ndi kuphulika imathanso kusankhidwa kumalo apadera.
Ma hydraulic actuators:gwiritsani ntchito mafuta a hydraulic kuti mugwiritse ntchito mavavu agulugufe. Ziwalo zawo zimapangidwa ndi chitsulo kapena zinthu zina zamphamvu. Imagawidwa m'mitu yochita kamodzi ndi iwiri ya pneumatic.
6. Zomera
Zomera zimathandizira ndikuchepetsa kukangana pakati pa magawo osuntha, monga ma valve ndi matupi. Iwo amaonetsetsa ntchito yosalala.
Zipangizo
- PTFE (Teflon):kukangana kochepa komanso kukana kwamankhwala abwino.
- Bronze:mphamvu yapamwamba komanso kukana kwabwino kovala.
7. Gaskets ndi O-mphete
Ma Gaskets ndi O-rings ndi zinthu zosindikizira. Amaletsa kutuluka pakati pa zigawo za valve ndi pakati pa ma valve ndi mapaipi.
Zipangizo
- EPDM:amagwiritsidwa ntchito kawirikawiri m'madzi ndi nthunzi.
- NBR:oyenera kugwiritsa ntchito mafuta ndi mafuta.
- PTFE:High chemical resistance, yomwe imagwiritsidwa ntchito popanga mankhwala ankhanza.
- Viton:Amadziwika kuti amakana kutentha kwambiri ndi mankhwala aukali.
8. Maboti
Maboti amagwirizira mbali za gulugufe pamodzi. Amawonetsetsa kuti valavu ndi yolimba komanso yosadukiza.
Zipangizo
- Chitsulo chosapanga dzimbiri:Zokondedwa chifukwa cha kukana kwa dzimbiri ndi mphamvu zake.
- Chitsulo cha carbon:Amagwiritsidwa ntchito m'malo osawononga kwambiri.
9. Zikhomo
Zikhomo zimagwirizanitsa diski ndi tsinde, zomwe zimapangitsa kuti aziyenda mozungulira.
Zipangizo
- Chitsulo chosapanga dzimbiri:Kukana kwa dzimbiri ndi mphamvu zambiri.
- Bronze:Valani kukana komanso machinability abwino.
10. Nthiti
Nthitizo zimapereka chithandizo chowonjezera pa disc. Iwo akhoza kuteteza deformation pansi pa mavuto.
Zipangizo
- Chitsulo:Mkulu mphamvu ndi kuuma.
- Aluminium:Oyenera ntchito zopepuka.
11. Linings ndi zokutira
Liner ndi zokutira zimateteza thupi la valve ndi ziwalo kuti zisawonongeke, kukokoloka, ndi kuwonongeka.
- Zovala za Rubber:Monga EPDM, NBR, kapena neoprene, zomwe zimagwiritsidwa ntchito pazowononga kapena zowononga.
- PTFE zokutira:kukana mankhwala ndi kukangana kochepa.
12. Zizindikiro za malo
Chizindikiro cha malo chimasonyeza kutseguka kapena kutsekedwa kwa valve. Izi zimathandiza makina akutali kapena odzipangira okha kuyang'anira malo a valve.
Mitundu
- Makaniko:chizindikiro chosavuta chamakina cholumikizidwa ndi tsinde la valve kapena actuator.
- Zamagetsi:ndi sensa