Buku la malangizo oyika mavavu Kuyika ndi kukonza valavu yolimbana ndi dzimbiri ya fluorine

Buku la malangizo oyika mavavu Kuyika ndi kukonza valavu yosamva dzimbiri ya fluorine Mavavu otsika amayikidwa pa kutentha kwa mumlengalenga. Pogwiritsa ntchito, sing'anga ikadutsa, imakhala kutentha kochepa. Chifukwa mapangidwe kutentha kusiyana, flanges, gaskets, mabawuti ndi mtedza, etc., kuchepa, ndipo chifukwa zipangizo za mbali zimenezi si zofanana, liniya wawo kukula koyenera ndi osiyana, kupanga zosavuta kutayikira zinthu zachilengedwe. Kuchokera pazifukwa izi, pomangirira ma bolts pa kutentha kwamlengalenga, torque yomwe imaganizira za kugunda kwa gawo lililonse pa kutentha kochepa iyenera kutengedwa. 1. Kuyika ndi kusokoneza ma valve 1.1 Njira zodzitetezera pakukonza ndi kukhazikitsa 1). Vavu iyenera kuikidwa m'chipinda chowuma ndi mpweya wabwino, ndipo mapeto onse a m'mimba mwake ayenera kusindikizidwa ndi fumbi; 2). Kusungidwa kwa nthawi yayitali kuyenera kuyang'aniridwa nthawi zonse, ndipo malo opangirapo ayenera kuphimbidwa ndi mafuta kuti asawonongeke; 3) Musanayambe kukhazikitsa ma valve, yang'anani mosamala ngati chizindikirocho chikugwirizana ndi zofunikira zogwiritsira ntchito; 4). Pakuyika, malo amkati ndi malo osindikizira ayenera kutsukidwa, ndipo kulongedza kuyenera kufufuzidwa kuti awone ngati akukanikizidwa mwamphamvu, ndipo ma bolts olumikiza ayenera kumangidwa mofanana. 5). Valavu iyenera kukhazikitsidwa molingana ndi malo ovomerezeka ogwirira ntchito, koma chidwi chiyenera kulipidwa pakukonza ndi ntchito yabwino; 6) Pogwiritsidwa ntchito, musatsegule pang'ono valavu yachipata kuti musinthe kayendetsedwe kake, kuti musawononge malo osindikizira pamene kuthamanga kwapakati kuli kwakukulu, kuyenera kutsegulidwa kwathunthu kapena kutsekedwa kwathunthu; 7). Mukatembenuza kapena kuzimitsa gudumu lamanja, musagwiritse ntchito zida zina zothandizira; 8). Zigawo zopatsirana ziyenera kuthiridwa mafuta pafupipafupi; Valavu iyenera kukhala yopaka mafuta nthawi zonse mu gawo lozungulira ndi tsinde la trapezoidal ulusi gawo 9) Pambuyo pa kukhazikitsa, kukonzanso nthawi zonse kuyenera kuchitidwa kuti muchotse dothi mkati mwa mkati, fufuzani malo osindikizira ndi kuvala kwa nut tsinde ya valve; 10). Payenera kukhala miyezo ya sayansi ndi yolondola yoyika, kuyesa ntchito yosindikiza kuyenera kuchitidwa pokonza, ndipo zolemba zatsatanetsatane ziyenera kupangidwa kuti zifufuzidwe 11) Nkhani zina zofunika kuziganizira: 1) Ma valve nthawi zambiri amayenera kuyimitsidwa asanayambe kuyika mapaipi. Chitolirocho chiyenera kukhala chachibadwa, malowo sali ovuta kukoka, kuti asachoke pa prestress; 2) Pamaso pa malo otsika valavu kutentha ayenera kukhala kutali mu dziko ozizira (monga madzi asafe) kuchita kutsegula ndi kutseka mayeso, kusinthasintha ndi palibe kupanikizana chodabwitsa; 3) Vavu yamadzimadzi iyenera kukonzedwa ndi 10 ° yopendekeka Angle pakati pa tsinde ndi mulingo kupewa madzi otuluka patsinde ndikuwonjezera kuzizira; Chofunika kwambiri, ndikofunika kupewa madzi okhudza kusindikiza pamwamba pa kunyamula, kotero kuti kumakhala kozizira komanso kolimba komanso kutaya mphamvu yosindikiza, zomwe zimapangitsa kuti ziwonongeke; 4) kugwirizana kwa valavu chitetezo ayenera chigongono kupewa kukhudza mwachindunji valavu; Komanso kuonetsetsa kuti valavu chitetezo si chisanu, kuti ntchito kulephera; 5) kuyika valavu yapadziko lonse lapansi kuyenera kupangitsa kuti kayendedwe kapakati kakhale kogwirizana ndi muvi womwe walembedwa pa thupi la valavu, kotero kuti kupanikizika kwa valve pamwamba pa valavu pamene valavu yatsekedwa, ndipo kulongedza sikungatheke. Koma osati nthawi zambiri lotseguka ndi kutseka ndipo ayenera mosamalitsa kuonetsetsa kuti chatsekedwa boma si kutayikira valavu (monga valavu Kutentha), akhoza mwachidziwitso n'zosiyana, mothandizidwa ndi sing'anga kuthamanga kuti atseke; 6) mafotokozedwe akuluakulu a valve yachipata, valavu yolamulira pneumatic iyenera kukhazikitsidwa molunjika, kuti musakondere mbali imodzi chifukwa cha kulemera kwa spool, kuonjezera kuvala kwa makina pakati pa spool ndi tchire, zomwe zimapangitsa kuti ziwonongeke; 7) Mukamangirira screw screw, valavu iyenera kukhala yotseguka pang'ono, kuti isawononge kusindikiza pamwamba pa valavu; 8) Pambuyo pa ma valve onse, ayenera kutsegulidwa ndi kutsekedwa kachiwiri, ndi oyenerera ngati ali osinthasintha komanso osakanizidwa; 9) Pambuyo pa nsanja yayikulu yolekanitsa mpweya itakhazikika, valavu yolumikizira imayimitsidwa kamodzi m'malo ozizira kuti iteteze kutulutsa kutentha ndi kutayikira pa kutentha kochepa; 10) Ndizoletsedwa kukwera tsinde la valve ngati scaffold pakuyika 11) Vavu yotentha kwambiri pamwamba pa 200 ℃, chifukwa kuyikako kumakhala kutentha, ndipo pambuyo pa ntchito yabwino, kutentha kumakwera, bawuti ndikukula kwamafuta, kusiyana ukuwonjezeka, choncho ayenera kumangika kachiwiri, amatchedwa "hot zolimba", woyendetsa ayenera kulabadira ntchito imeneyi, apo ayi n'zosavuta kutayikira. 12) Pamene nyengo ikuzizira ndipo valavu yamadzi imatsekedwa kwa nthawi yaitali, madzi kumbuyo kwa valve ayenera kuchotsedwa. Vavu ya nthunzi ikasiya nthunzi, madzi osungunuka ayeneranso kuchotsedwa. Pansi pa valavu imakhala ngati pulagi ya waya, yomwe imatha kutsegulidwa kuti ikhetse madzi. 13) Ma valve opanda zitsulo, ena olimba, otsika mphamvu, ntchito, kutsegula ndi kutseka mphamvu sizingakhale zazikulu kwambiri, makamaka sangathe kupanga mphamvu. Komanso samalani kuti mupewe kugunda kwa chinthu. 14) Pamene valve yatsopano ikugwiritsidwa ntchito, kulongedza sikuyenera kukanikizidwa mwamphamvu kwambiri kuti zisawonongeke, kuti mupewe kupanikizika kwambiri pa tsinde, kufulumizitsa kuvala, ndi kutsegula ndi kutseka. Kukana kwa Corrosion resistance Kuyika ndi kukonza valavu ya Fluorine Lining valve valavu ndi zida zamapaipi pazitsulo, chifukwa cha thupi ndi mankhwala, zimakhala ndi izi pakuyika, kukonza ndi kukonza zinthu: Terminology ndi kufotokozera (a) The Mtundu wa lining wathunthu nthawi zambiri umatanthawuza khoma lamkati la thupi la valavu, chivundikiro cha valve ndi mbali zina zopanikizika zomwe zimalumikizana ndi sing'angayo. Kunja pamwamba pa tsinde valavu, gulugufe mbale, tambala ndi bwalo ndi zina zamkati wokutidwa ndi makulidwe ena a pulasitiki dzimbiri kugonjetsedwa valavu ndi njira akamaumba. Zida zomwe zimagwiritsidwa ntchito kwambiri ndi F46, F3, F2, etc. Fluorine ali ndi valavu ndi mtundu wa ma valve omwe amagwiritsidwa ntchito kwambiri m'makampani, akadali ndi magulu osiyanasiyana osiyanasiyana, fluorine ali ndi valavu yazitsulo malinga ndi payipi yosiyana siyana (anticorrosive). zakuthupi), tiyeni tikufotokozereni mwatsatanetsatane. Kukhazikika kwa valavu ya fluorine kukana kuyika ndi kukonza valavu ya fluorine ndi chiyani 1, polyene m'mimba mwake PO Yogwira ntchito: kuchuluka kwa asidi ndi mchere wamchere ndi zosungunulira zina. Kutentha kwa ntchito: -58-80 digiri Celsius. Mawonekedwe: Ndi chinthu chabwino kwambiri cha anticorROsive padziko lonse lapansi. Zakhala zikugwiritsidwa ntchito kwambiri pakuyika zida zazikulu ndi zitoliro. 2, polyperfluoroethylene propylene FEP(F46) Ntchito sing'anga: zosungunulira aliyense organic, kuchepetsa kapena anaikira inorganic asidi, zamchere, etc., kutentha: -50-120 madigiri Celsius. ZINTHU ZOTHANDIZA: ZINTHU ZAMAKHALIDWE, ZA ELECTRIC NDI KUKHALA KWA CHEMICAL NDI ZOMWE ZIMODZI NDI F4, KOMA Ubwino wopambana ndi kulimba kosunthika, kukana kwanyengo komanso kuwala kwa dzuwa. 3. Polytrifluoride PCTEF(F3) Ntchito sing'anga: zosiyanasiyana solvents organic, inorganic dzimbiri madzi (oxidizing acid), kutentha: -195-120 madigiri Celsius. Zomwe Zilipo: Kukana kutentha, mphamvu zamagetsi ndi kukhazikika kwa mankhwala ndizochepa kwa F4, mphamvu zamakina, kuuma kuli bwino kuposa F4. 4, PTFE(F4) Ntchito sing'anga: asidi amphamvu, maziko amphamvu, oxidant amphamvu, etc. Gwiritsani ntchito kutentha -50-150 digiri Celsius. Mawonekedwe: Kukhazikika kwabwino kwamankhwala, kukana kutentha kwambiri, kukana kuzizira, koyezetsa kocheperako, ndi chinthu chabwino kwambiri chodzipangira mafuta, koma zinthu zotsika zamakina, kusayenda bwino kwamadzi, kukulitsa kwakukulu kwamafuta. 5. Polypropylene RPP Yogwiritsidwa ntchito sing'anga: njira yamadzimadzi yamchere yamchere, kuchepetsa kapena kulimbikitsa kusungunuka kwamadzimadzi a inorganic acid ndi alkalis. Kutentha kwa ntchito: -14-80 digiri Celsius. Mawonekedwe: Imodzi mwamapulasitiki opepuka chifukwa cha zokolola zake. Kulimba komanso kulimba mtima, kuuma ndikwabwino kwambiri ndi polyethylene yotsika, imakhala yolimba kwambiri; Kukana kutentha kwabwino, kuumba kosavuta, pambuyo pa kusinthidwa kotsika mtengo kwambiri, motility, fluidity ndi zotanuka modulus zopindika zimasinthidwa. 6, polyvinylidene fluoride PVDF(F2) Yoyenera sing'anga: Kugonjetsedwa ndi mankhwala ambiri ndi zosungunulira. Gwiritsani ntchito kutentha -70-100 digiri Celsius. ZOTHANDIZA: TENSILE STRENGTH NDI MPHAMVU YOPANDA KUPOSA F4, kukana kupindika, kukana nyengo, kukana kwa radiation, kukana kuwala ndi kukalamba, ndi zina zambiri, kumadziwika ndi kulimba kwabwino, kuumba kosavuta.