1 Mwachidule
Vavu ya agulugufe ndi chida chofunikira kwambiri pamayendedwe amadzi ndi mipope ya ngalande.Ndi kupita patsogolo kwaukadaulo wamafakitale, zofunikira zosiyanasiyana zimayikidwa patsogolo pamapangidwe ndi magwiridwe antchito a valavu yagulugufe.Choncho, mtundu, zakuthupi ndi mawonekedwe ogwirizanitsa ayenera kusankhidwa moyenerera malinga ndi momwe ntchito ikugwirira ntchito panthawi yokonza ndi kusankha.
Vavu ya agulugufe ndi chida chofunikira kwambiri pamayendedwe amadzi ndi mipope ya ngalande.Ndi kupita patsogolo kwaukadaulo wamafakitale, zofunikira zosiyanasiyana zimayikidwa patsogolo pamapangidwe ndi magwiridwe antchito a valavu yagulugufe.Choncho, mtundu, zakuthupi ndi mawonekedwe ogwirizanitsa ayenera kusankhidwa moyenerera malinga ndi momwe ntchito ikugwirira ntchito panthawi yokonza ndi kusankha.
2 Mapangidwe
2.1 Kapangidwe
Chidutswa chotseka (mbale ya butterfly) ya valavu ya butterfly chiri pakati pa sing'anga, ndipo chikoka chake pa kukana kothamanga chiyenera kuganiziridwa pakupanga.
2.1 Kapangidwe
Chidutswa chotseka (mbale ya butterfly) ya valavu ya butterfly chiri pakati pa sing'anga, ndipo chikoka chake pa kukana kothamanga chiyenera kuganiziridwa pakupanga.
Ponena za kapangidwe ka gulugufe mbale ya lalikulu m'mimba mwake gulugufe valavu, AWWA C504 (American Water Supply Engineering Association Standard) limati mbale gulugufe sayenera kukhala ndi nthiti yopingasa, ndipo makulidwe ake sayenera kukhala wamkulu kuposa 2.25 m'mimba mwake wa agulugufe. tsinde la valve.
Madzi omwe amalowa m'madzi ndi pamwamba pa madzi a gulugufe ayenera kusinthidwa.
Zomangira zamkati sizingatulukire kunja kwa mbale yagulugufe, kuti zisawonjeze malo oyang'ana madzi.
2.2 Chisindikizo cha Rubber
Madzi omwe amalowa m'madzi ndi pamwamba pa madzi a gulugufe ayenera kusinthidwa.
Zomangira zamkati sizingatulukire kunja kwa mbale yagulugufe, kuti zisawonjeze malo oyang'ana madzi.
2.2 Chisindikizo cha Rubber
Nthawi zina moyo wautumiki wa valavu ya gulugufe wa rabara ndi waufupi, womwe umagwirizana ndi khalidwe la rabara ndi m'lifupi mwa kusindikiza pamwamba.Mphete yosindikizira ya valavu yagulugufe yosindikizidwa ndi rabala iyenera kupangidwa ndi zipangizo zamtengo wapatali za mphira, ndipo malamulo oyendetsera ndondomeko ayenera kutsatiridwa panthawi ya kuponderezana.Kutentha kwa vulcanization sikuyenera kuwonjezereka mopanda malire, ndipo nthawiyo ikhoza kufupikitsidwa, mwinamwake izo zidzachititsa kuti mphete yosindikizira ikhale yokalamba komanso yosweka.Malo osindikizira zitsulo omwe amafanana ndi mphete yosindikizira mphira ayenera kukhala ndi m'lifupi mwake, apo ayi mphete yosindikizira mphira sikophweka kuti ikhalepo.Kuonjezera apo, mawonekedwe ndi kulolerana kwa malo, symmetry, kulondola, kusalala, ndi elasticity ya mphete yosindikizira ya thupi la valve ndi gulugufe mbale zimakhudzanso moyo wautumiki wa mphete yosindikiza mphira.
2.2 Kuuma
Kuuma ndi nkhani yofunika kwambiri pakupanga ma valve a butterfly, omwe amagwirizana ndi zinthu monga mbale za butterfly, shafts valves ndi kugwirizana.
Kuuma ndi nkhani yofunika kwambiri pakupanga ma valve a butterfly, omwe amagwirizana ndi zinthu monga mbale za butterfly, shafts valves ndi kugwirizana.
(1) Kukula kwa shaft valavu Kukula kwa shaft ya valve kumatchulidwa mu AWWA C504.Ngati kukula kwa shaft ya valve sikukukwaniritsa zofunikira, pangakhale kusasunthika kosakwanira, kutsika kwa chisindikizo, ndi torque yayikulu yotsegula.Kuuma kwa shaft kumagwirizana ndi 1 / EI, ndiko kuti, kupititsa patsogolo kuuma ndi kuchepetsa vuto la deformation, tiyenera kuyamba ndi kuwonjezera EI.E ndi modulus ya elasticity.Kawirikawiri, kusiyana kwachitsulo sikuli kwakukulu, ndipo zinthu zosankhidwa zimakhala ndi zotsatira zochepa pa kuuma.Ndi nthawi ya inertia ndipo ikugwirizana ndi kukula kwa gawo la shaft.Kukula kwa shaft ya valve nthawi zambiri kumawerengedwa molingana ndi kuphatikiza kwa kupindika ndi torsion.Sizongokhudzana ndi torque, komanso makamaka zokhudzana ndi mphindi yopindika.Makamaka, mphindi yopindika ya valavu yagulugufe yamitundu yayikulu ndi yayikulu kwambiri kuposa torque.
(2) Kulumikizana kwa dzenje la shaft Mtundu wakale wa AWWA C504 umanena kuti shaft ya agulugufe ndi shaft yowongoka.Pambuyo pa Baibulo la 1980, adaganiza kuti likhoza kupangidwa kukhala mashaft awiri aafupi.Malinga ndi AWWA C504 ndi GB12238, kutalika kwa shaft ndi dzenje kuyenera kukhala 1.5d.Mpata (C mtengo) pakati pa m'mphepete mwa thupi la valve ndi kumapeto kwa mbale ya butterfly mu axial dimension ya butterfly valve ya ku Japan imatchulidwa, yomwe nthawi zambiri imagwirizana ndi kukula kwake, komwe kuli pakati pa 25 ndi 45mm. , chomwe ndi kuchepetsa mtunda pakati pa zothandizira shaft ( C value), potero kuchepetsa mphindi yopindika ndi kusinthika kwa shaft.
(3) Kapangidwe ka mbale ya butterfly Kapangidwe ka gulugufe kamakhala ndi ubale wachindunji ndi kulimba, kotero kuwonjezera pa mawonekedwe a mbale yathyathyathya, nthawi zambiri amapangidwa kukhala mawonekedwe a mphika kapena mawonekedwe a truss.Mwachidule, ndikuwonjezera nthawi ya inertia ya gawolo kuti muwonjezere kukhazikika.
(4) Maonekedwe a thupi la vavu Palinso mavuto owuma pakupanga thupi lalikulu la gulugufe.Kawirikawiri, pali nthiti za mphete ndi nthiti zopingasa.Ndipotu, nthiti za mtanda zimangowonjezera kukhazikika ndipo siziyenera kukhala zambiri.Zazikuluzikulu ndi nthiti za mphete.Ngati mutha kuwonjezera nthiti zooneka ngati ∩, zidzakhala zopindulitsa kwambiri pakulimba, koma pali vuto la kusapanga bwino.
2.3 Ma bere odzipaka okha
Zambiri kapena zonse zapakatikati pa mbale yagulugufe (reverse) zimapatsirana kudzera pamtengowo, kotero kunyamula kumagwira ntchito yofunika kwambiri.Mavavu agulugufe akunja ndi opepuka komanso othandiza, ndipo mavavu ang'onoang'ono amatha kutembenuzidwa ndi chala chimodzi, pomwe mavavu agulugufe am'nyumba amakhala olemera.Kuphatikiza pa coaxiality, symmetry, kulondola kwa processing, kumaliza ndi khalidwe la kulongedza, ndi chinthu chofunika kwambiri ndi lubricity ya zida za manja.Muyezo wa AWWA C504 ukunena kuti nsonga ya shaft kapena chonyamulira chomwe chimayikidwa m'thupi la valve chiyenera kukhala chodzipangira chokha, ndipo mawondo a shaft ali ndi vuto la kuchepetsa mikangano ndi mafuta, ndipo dzimbiri siziloledwa.Popanda manja a shaft, ngakhale shaft ya valve ndi chitsulo chosapanga dzimbiri, thupi la valve limakhala ndi dzimbiri komanso mavuto omatira.Kugwiritsiridwa ntchito kwa bushings kungapangitsenso kukhwima.
Zambiri kapena zonse zapakatikati pa mbale yagulugufe (reverse) zimapatsirana kudzera pamtengowo, kotero kunyamula kumagwira ntchito yofunika kwambiri.Mavavu agulugufe akunja ndi opepuka komanso othandiza, ndipo mavavu ang'onoang'ono amatha kutembenuzidwa ndi chala chimodzi, pomwe mavavu agulugufe am'nyumba amakhala olemera.Kuphatikiza pa coaxiality, symmetry, kulondola kwa processing, kumaliza ndi khalidwe la kulongedza, ndi chinthu chofunika kwambiri ndi lubricity ya zida za manja.Muyezo wa AWWA C504 ukunena kuti nsonga ya shaft kapena chonyamulira chomwe chimayikidwa m'thupi la valve chiyenera kukhala chodzipangira chokha, ndipo mawondo a shaft ali ndi vuto la kuchepetsa mikangano ndi mafuta, ndipo dzimbiri siziloledwa.Popanda manja a shaft, ngakhale shaft ya valve ndi chitsulo chosapanga dzimbiri, thupi la valve limakhala ndi dzimbiri komanso mavuto omatira.Kugwiritsiridwa ntchito kwa bushings kungapangitsenso kukhwima.
2.4 Kulumikiza shaft ndi gulugufe mbale
Mtsinje ndi mbale ya gulugufe ya valavu yagulugufe yaing'ono yaing'ono imagwirizanitsidwa ndi kiyi kapena spline, ndipo kugwirizana kwa polygonal shaft kapena pini kungagwiritsidwe ntchito.Shaft ndi mbale ya gulugufe ya valavu yagulugufe ya m'mimba mwake imakhala yolumikizidwa kwambiri ndi makiyi kapena zikhomo.Pakalipano, ma shafts ndi ma discs ambiri amalumikizidwa ndi zikhomo.Pini yolumikizira imawonongeka pansi pamikhalidwe yovuta kwambiri yogwirira ntchito.Izi makamaka chifukwa cha zifukwa zopangira.Pakati pawo, kulondola kwa anastomosis sikuli bwino, kukula kwa pini sikoyenera, kuuma kwa pini sikokwanira kapena zinthu sizili zoyenera, ndi zina zotero, ziyenera kuperekedwa.Shaft ndi mbale yagulugufe ya valavu yayikulu yagulugufe imatha kulumikizidwa ndi njira yapadera.
Mtsinje ndi mbale ya gulugufe ya valavu yagulugufe yaing'ono yaing'ono imagwirizanitsidwa ndi kiyi kapena spline, ndipo kugwirizana kwa polygonal shaft kapena pini kungagwiritsidwe ntchito.Shaft ndi mbale ya gulugufe ya valavu yagulugufe ya m'mimba mwake imakhala yolumikizidwa kwambiri ndi makiyi kapena zikhomo.Pakalipano, ma shafts ndi ma discs ambiri amalumikizidwa ndi zikhomo.Pini yolumikizira imawonongeka pansi pamikhalidwe yovuta kwambiri yogwirira ntchito.Izi makamaka chifukwa cha zifukwa zopangira.Pakati pawo, kulondola kwa anastomosis sikuli bwino, kukula kwa pini sikoyenera, kuuma kwa pini sikokwanira kapena zinthu sizili zoyenera, ndi zina zotero, ziyenera kuperekedwa.Shaft ndi mbale yagulugufe ya valavu yayikulu yagulugufe imatha kulumikizidwa ndi njira yapadera.
2.5 Kutalika kwa kamangidwe
Kutalika kwa mapangidwe a valavu ya gulugufe kumayamba kukhala mndandanda waufupi, koma njira yotereyi iyenera kukhala yosamala.Chifukwa kutalika kwake ndikwafupi kwambiri kuti zisakhudze mphamvu.Miyezo yapadziko lonse lapansi yanena za kutalika kwa ma valve agulugufe a flange, koma kutalika kwa valavu yokhala ndi mphamvu yayikulu sikuyenera kufupikitsidwa, apo ayi mavuto adzachitika, makamaka pazida zosalimba monga chitsulo choponyedwa.
Kutalika kwa mapangidwe a valavu ya gulugufe kumayamba kukhala mndandanda waufupi, koma njira yotereyi iyenera kukhala yosamala.Chifukwa kutalika kwake ndikwafupi kwambiri kuti zisakhudze mphamvu.Miyezo yapadziko lonse lapansi yanena za kutalika kwa ma valve agulugufe a flange, koma kutalika kwa valavu yokhala ndi mphamvu yayikulu sikuyenera kufupikitsidwa, apo ayi mavuto adzachitika, makamaka pazida zosalimba monga chitsulo choponyedwa.
Nortech ndi m'modzi mwa otsogola opanga ma valve ku China omwe ali ndi chiphaso cha ISO9001.
Nthawi yotumiza: Aug-20-2021