Mavavu osindikizira pamwamba pa zinthu zomwe zimagwira ntchito kutentha kwapakati kuyerekeza kwa tebulo la valve kuthamanga ziyenera kutsatira mfundo 16 ndi zinthu zofunika kuziganizira.
Vavu kusindikiza pamwamba zinthu ntchito kutentha sing'anga kuyerekeza tebulo
zakuthupi
Kutentha koyenera kwa utumiki
Malangizo ogwiritsira ntchito
Butyl rabara Buna-N
-23 ℃ ~ 82 ℃
Yaifupi -23 ℃ ~ 120 ℃
Butadiene mphira ali wabwino kudzikonda malleability, kuvala kukana ndi hydrocarbon kukana katundu, monga zinthu ambiri angagwiritsidwe ntchito mu madzi, zingalowe, asidi, mchere, zamchere, lipids, mafuta, batala, hayidiroliki mafuta, glycol ndi TV zina, koma sangathe. kugwiritsidwa ntchito **, ketone, nitrate ndi fluorinated hydrocarbon malo.
YiBing mphira
Chithunzi cha EPDM
-40 ℃ ~ 135 ℃
Short -50 ℃ ~ 170 ℃
Ethylene propylene rabara ndi yabwino chilengedwe kupanga mphira, angagwiritsidwe ntchito kachitidwe madzi otentha, zakumwa, mkaka, methyl ketone, mowa, nitrate ndi glycerol ndi zina TV, koma sangathe ntchito hydrocarbon zochokera mafuta, inorganic kanthu kapena zosungunulira.
Fluoroprene Neoprene
-29 ℃ ~ 135 ℃
Wamfupi -35 ℃ ~ 113 ℃
Fluoroprene mphira angagwiritsidwe ntchito mu asidi, mafuta, mafuta, zosungunulira batala ndi zina TV, ali kukana bwino kwa anhydrous ammonia ndi mowa ntchito.
Fluorinated rabara
Viton
-29 ℃ ~ 205 ℃
Fluorinated mphira ndi kukana zabwino hydrocarbon zochokera mafuta, mafuta gasi ndi zinthu zina mafuta a mphira fluorinated, oyenera madzi, mafuta, mpweya, asidi ndi TV zina, koma sangathe ntchito nthunzi, pa 82 ℃ madzi otentha kapena anaikira. alkali system.
Mpira wa silicone
Silicone
-40 ℃ ~ 180 ℃
Silicone mphira kukana kutentha kwambiri, kutentha pang'ono, kukhazikika kwa mankhwala, komwe kumagwiritsidwa ntchito kwambiri mu asidi amphamvu, alkali ofooka ndi mafakitale azakudya.
PTFE PTFE
-10 ℃ ~ 200 ℃
Polytetrafluoroethylene imakhala ndi mankhwala okhazikika, osasunthika bwino, mafuta abwino komanso odana ndi ukalamba, amagwiritsidwa ntchito kwambiri mu ma acid amphamvu, maziko ofooka, ma oxidants amphamvu ndi media zina zowononga.
Kuyeza kuthamanga kwa ma valve kumayenderana ndi mfundo zomwe zimafunikira chisamaliro pakupanga ma valve 16 ndizovuta komanso zosavuta, zopangidwa wamba za mavavu monga valavu yachipata, valavu ya mpira, valavu yapadziko lonse lapansi, valavu ya butterfly, valavu yoyendera, kupanga ma valve ambiri. m'masiku atatu, ma valve opangira abwino amayenera kuyesedwa kosiyanasiyana, kuphatikiza * * kuyesa kofunikira ndikuyesa. Kuyesa kwapanikizi ndikuyesa ngati kupanikizika kwa valavu kumatha kupirira zomwe zimafunikira pakupanga, kuyesa kwamphamvu kwa ma valve kumayenera kutsatira mfundo izi ndi zinthu zofunika kuziganizira:
Kupanga ma valve ndi njira yovuta komanso yosavuta. Kuzungulira kwa mavavu wamba monga mavavu a pachipata, ma valve a mpira, ma valve a globe, ma valve agulugufe ndi ma cheke nthawi zambiri amakhala m'masiku atatu. Kupanga ma valve kuyenera kuyesedwa ndi mayesero osiyanasiyana ogwira ntchito, pakati pawo kuyesa kofunikira kwambiri ndikuyesa kuthamanga. Kuyesa kwapanikizi ndikuyesa ngati kupanikizika kwa valavu kumatha kupirira zomwe zimafunikira pakupanga, kuyesa kwamphamvu kwa ma valve kumayenera kutsatira mfundo izi ndi zinthu zofunika kuziganizira:
(1) Muzochitika zachilendo, valavu sichiyesedwa mphamvu, koma thupi la valve ndi chivundikiro cha valve pambuyo pa kukonzanso kapena kuwonongeka kwa dzimbiri ziyenera kuyesedwa mphamvu. Kwa valavu yotetezera, kupanikizika kosalekeza ndi kubwereranso ndi mayesero ena kuyenera kutsata ndondomeko ndi ndondomeko zoyenera.
(2) Mphamvu ndi kulimba kwa valve ziyenera kuyesedwa. Low-pressure valve spot check 20%, monga osayenera ayenera 100% kuyang'ana; Ma valve apakati ndi apamwamba ayenera kuyang'aniridwa 100%.
(3) Pakuyesa, valavu iyenera kuikidwa kuti iwonetsedwe mosavuta.
(4) Pakuti mavavu mu mawonekedwe a kugwirizana welded, conical chisindikizo kapena O-mphete chisindikizo angagwiritsidwe ntchito mayeso kuthamanga pamene kuthamanga mayeso ndi mbale akhungu si zotheka.
(5) kuyesa kwa hydraulic kudzayesa kuthetsa mpweya wa valve.
(6) Kupanikizika kuyenera kuwonjezeka pang'onopang'ono panthawi ya mayesero, ndipo kuthamanga mofulumira komanso mwadzidzidzi sikuloledwa.
(7) Kuyesa kwamphamvu ndi nthawi yoyesa kusindikiza nthawi zambiri kumakhala mphindi 2-3, mavavu ofunikira komanso apadera ayenera kukhala mphindi 5. Nthawi yoyesera ya valve yaying'ono imatha kukhala yayifupi, nthawi yayitali yoyesa ma valve ingakhale yotalikirapo. Panthawi yoyesedwa, ngati mukukayikira, nthawi yoyesera ikhoza kuwonjezeredwa. Panthawi yoyezetsa mphamvu, musalole kuti thupi ndi chivundikiro chitulutse thukuta kapena kutuluka. Kuyesa kusindikiza, vavu wamba ndi kamodzi kokha, valavu yotetezera, valavu yothamanga kwambiri ndi ma valve ena aiwisi ayenera kuchitidwa kawiri. Pakuyesa, kupanikizika kochepa, ma valve akuluakulu awiri osafunikira ndi ma valve okhala ndi zinthu zomwe zimalola kutayikira amaloledwa kukhala ndi zochitika zowonongeka; Chifukwa cha zofunikira zosiyanasiyana za mavavu a chilengedwe chonse, ma valve oyendetsa magetsi, ma valve a Marine ndi ma valve ena, zofunikira zowonongeka ziyenera kuchitidwa motsatira malamulo oyenerera.
(8) Valavu ya throttle sinatsekeredwe kuyesa kusindikiza, koma iyenera kukhala kuyesa mphamvu ndi kunyamula ndi kuyesa kusindikiza gasket.
(9) Poyesa kukakamiza, mphamvu yotseka valavu imangolola mphamvu yachibadwa ya munthu kutseka; Sizololedwa kugwiritsa ntchito mphamvu ndi ma levers kapena zida zina (kupatula ma wrenches a torque). Pamene m'mimba mwake wa handwheel ndi wamkulu kuposa 320mm, anthu awiri amaloledwa kutseka pamodzi.
(10) Valavu yokhala ndi chisindikizo chapamwamba iyenera kuchotsedwa muzotengerazo kuti iyesedwe kusindikiza. Chisindikizo chapamwamba chikatsekedwa, fufuzani ngati pali kutayikira. Poyesa ndi gasi, lembani bokosi lodzaza ndi madzi kuti muwunike. Musalole kuti chisindikizo chapamwamba chikhale choyandikira pamene mukunyamula mayeso olimba.
(11) kumene valavu ili ndi chipangizo choyendetsa galimoto, poyesa kusindikiza kwake, chipangizo choyendetsa galimoto chiyenera kugwiritsidwa ntchito kutseka valavu kuti ayese kusindikiza. Chipangizo choyendetsa pamanja, chiyenera kugwiritsidwanso ntchito kutseka chisindikizo cha valve.
(12) Kuyesa kwamphamvu ndi kuyesa kusindikiza komwe kumayikidwa pa valve yaikulu yodutsa valavu, mu mphamvu yaikulu ya valve ndi kuyesa kusindikiza; Pamene shutoff yaikulu ya valve imatsegulidwa, iyeneranso kutsegulidwa molingana.
(13) Poyesa mphamvu ya valavu yachitsulo, nyundo yamkuwa iyenera kugwiritsidwa ntchito kugogoda thupi la valve ndi chivundikiro cha valve kuti muwone ngati pali kutuluka.
(14) Pamene valavu ikuyesedwa, kusindikiza pamwamba pa valavu sikuloledwa kupaka mafuta kupatula kuti malo osindikizira a valavu amaloledwa kuti azipaka mafuta.
(15) Pakuyesa kukakamiza kwa valve, kupanikizika kwa mbale yakhungu pa valve sikuyenera kukhala kwakukulu kwambiri, kuti mupewe kusinthika kwa valve ndi kukhudza zotsatira zoyesa (ngati valavu yachitsulo yachitsulo imakanizidwa kwambiri; zidzawonongeka).
(16) Pambuyo poyesa kuthamanga kwa valve kutsirizidwa, madzi mu valve ayenera kuchotsedwa nthawi ndi kupukuta, ndipo zolemba zoyesa ziyenera kupangidwa.
Nthawi yotumiza: Aug-25-2022
