Chidziwitso choyika mavavu ndi zinthu zomwe zimafunikira chidwi pakupanga ma valve a petrochemical plant

Chidziwitso choyika ma valve ndi zinthu zomwe zimafunikira chisamaliro cha petrochemical plant valve valavu Zofunikira pakuyika ma vavu Mkhalidwe WA kuyika kwa ma valve ndi abwino kapena oyipa, zimakhudza mwachindunji kugwiritsa ntchito valavu pambuyo pake, gawo lomanga ndi gawo lopanga liyenera kuyambitsidwa kuti ligwirizanitse kufunikira kwakukulu. Kuyika ma valve kudzachitika motsatira buku la malangizo a valve ndi malamulo oyenera. Pomanga, tiyenera kufufuza mosamala ndi kumanga mosamala. Valavu isanayikidwe, IYENERA KUKHALA pambuyo poyesa kupanikizika. Yang'anani mosamala ngati ndondomeko ndi chitsanzo cha valve zikugwirizana ndi zojambulazo, fufuzani ngati zigawo za valve zilibe kanthu, ngati valavu yotsegula ndi yotseka imakhala yosinthika komanso yaulere, komanso ngati malo osindikizira awonongeka, etc., ndi kukhazikitsa. valve pambuyo kutsimikizira. Vavu ikayikidwa, njira yogwirira ntchito ya valve iyenera kukhala pafupifupi 1.2m kuchokera pamalo opangira opaleshoni, yomwe imatuluka ndi chifuwa. Pamene pakati pa valavu ndi gudumu lamanja lili kutali ndi 1.8m kutali ndi malo ogwiritsira ntchito, malo ogwiritsira ntchito ayenera kukhazikitsidwa kwa ma valve ndi ma valve otetezera ndi ntchito zambiri. Kwa mapaipi okhala ndi ma valve ambiri, yesetsani kuyika ma valve pa nsanja kuti mugwire ntchito mosavuta. Zida monga ma sprocket, ndodo zowonjezera, nsanja zosunthika, ndi makwerero osunthika zitha kugwiritsidwa ntchito pamavavu apawokha opitilira 1.8m ndipo osagwiritsidwa ntchito pafupipafupi. Pamene valve imayikidwa pansi pa NTCHITO YOGWIRITSA NTCHITO, NTCHITO YOLAMBIRA IDZAPEREKEDWA, ndipo VALVE ya pansi idzaperekedwa ndi chitsime cha pansi, chomwe chidzatsekedwa kuti chitetezeke. Tsinde la valavu pa chitoliro chopingasa chiyenera kukhala chokwera pamwamba. Sikoyenera kukhazikitsa tsinde pansi. Vavu tsinde pansi unsembe, ntchito zovuta, kukonza zovuta, komanso zosavuta dzimbiri ngozi valavu. Osayika ma valve apansi pansi kuti mupewe kugwira ntchito movutikira. Vavu yomwe ili m'mbali mwa payipi iyenera kukhala ndi malo ogwirira ntchito, kukonza ndi kuwombola, ndipo mtunda wa ukonde pakati pa mawilo amanja uyenera kukhala wosachepera 100mm. Ngati mtunda pakati pa mapaipi ndi wopapatiza, valavu iyenera kugwedezeka. Kwa valavu yokhala ndi mphamvu yayikulu yotsegulira, mphamvu yochepa, brittleness yaikulu ndi kulemera kwakukulu, valve yothandizira frame valve iyenera kukhazikitsidwa musanayike kuti muchepetse kupsinjika maganizo. Mukayika valavu, gwiritsani ntchito wrench ya chitoliro cha chitoliro choyandikana ndi valavu ndi wrench wamba wa valve yokha. Pa nthawi yomweyo, unsembe, kupanga valavu mu theka chatsekedwa boma kuteteza kasinthasintha valavu ndi mapindikidwe. Kuyika koyenera kwa valavu kuyenera kupanga mawonekedwe amkati amkati mogwirizana ndi kayendetsedwe ka kayendedwe ka sing'anga, mawonekedwe oyikapo mogwirizana ndi zofunikira zapadera za mawonekedwe a valve ndi zofunikira zogwirira ntchito. Chisamaliro chapadera chiyenera kuperekedwa kwa zofunikira zapakati zoyenda za valve ziyenera kukhazikitsidwa malinga ndi zofunikira za payipi ya ndondomeko. KUKONZEDWA KWA VALVU KUKHALA KWAMBIRI NDIPONSO KUPEZEKA KWA OPEREKA. Kwa ma valve onyamula-tsinde, payenera kukhala malo ogwirira ntchito. Tsinde la ma valve onse liyenera kukwezedwa mmwamba ndi perpendicular kwa chitoliro momwe zingathere. Kuyika kwa valavu yolumikizira pamwamba Ngati mapeto a valavu ali ndi ulusi, screw iyenera kukulungidwa mu kuya kwa valve. Ngati zomangirazo zikulungidwa pampando wakuzama, zimakhudza kulumikizana kwabwino kwa mpando ndi chipata. Ngati wonongayo ikulungidwa mu gawo losaya, zimakhudza kudalirika kwa kusindikiza kwa olowa, ndipo ndikosavuta kuyambitsa kutayikira. Panthawi imodzimodziyo, ulusi wosindikiza ulusi uyenera kupangidwa ndi PTFE yaiwisi ya tepi yosindikizira, ndipo samalani kuti musapereke zinthu zosindikizira ku valve ya valve. Kwa mavavu WOLUMIKIZANA NDI FLANGE END, POYAMBA PEZANI NKHOPE YOLUMIKIRIKA YA FLANGE, NDI NKHOPE YAKUTSOPALI CHOKHALA PA Mzere NDIPO BOLT WOYANKHA. Chovala cha VALVE chiyenera kukhala chofanana ndi chitoliro cha chitoliro, kusiyana kwa flange kumakhala kochepa, sikuyenera kukhala pakamwa molakwika, kupendekera ndi zochitika zina, gasket pakati pa flanges iyenera kuikidwa pakati, sungagwedezeke, bolt iyenera kukhala. symmetrical ndi wophatikizika wokhazikika. Imalepheretsa mphamvu yotsalira yowonjezera kuti ikakamizidwe kulimbitsa kulumikizana pakuyika ma valve. Musanayambe kuyika, chitoliro chamkati chamkati ndi ulusi wakunja uyenera kutsukidwa bwino ndi dothi; *** Burr ndi nkhani zakunja zomwe zimalepheretsa kuyenda kwa sing'anga ndipo zingakhudze ntchito ya zida, kuwomba dothi, slag ndi zina zambiri mu chitoliro musanalumikizane. Pewani kuwonongeka kwa malo osindikizira a valve kapena plug valve. Mukayika valavu yolumikizidwa kumapeto kwa kuwotcherera, msoko wowotcherera kumapeto onse a valve pambuyo pa kuwotcherera kwa malo uyenera kukonzedwa poyamba, ndiye valavu iyenera kutsegulidwa, ndipo msoko wowotcherera uyenera kuwotcherera molingana ndi ndondomeko yowotcherera. Pambuyo kuwotcherera, maonekedwe ndi khalidwe la weld la mkati liyenera kufufuzidwa kuti liwonetsetse kuti palibe porosity, slag kuphatikizidwa, ming'alu, etc., ndi weld ayenera kuyang'aniridwa ndi ray kapena kulamulira pakufunika. Kuyika ma valve olemera kwambiri poika ma valve olemera (DN100), GWIRITSANI NTCHITO Zipangizo KAPENA ZOTENGERA, CHINONGA CHONONGA CHIYENERA KUKHALA PA flange KAPENA bulaketi YA valve, osati ku tsinde la valavu ya chogwirira, kotero AS kuti mupewe kuwonongeka kwa valve. Zofunikira zonse pakuyika ma valve ndi chiyani? Yankho: Zomwe zimafunikira pakuyika ma valve, kutalika koyenera kuyika, valavu pa chitoliro chopingasa, mayendedwe a tsinde la valavu ndi awa: (1) Vavu iyenera kukhala pamalo osavuta, osavuta kugwiritsa ntchito komanso kukonza. MAVAVU A PA mzere wa mapaipi (monga mapaipi opita ndi kuchokera ku chipangizo) ayenera kukonzedwa pakati, ndipo nsanja yogwirira ntchito ndi makwerero ziyenera kuganiziridwa. Kufanana kwa valavu pa payipi, mzere wake wapakati uyenera kukhala pafupi kwambiri. Mtunda wa ukonde pakati pa mawilo amanja sayenera kuchepera 10Qmm. Pofuna kuchepetsa mtunda pakati pa mapaipi, ma valve amatha kugwedezeka. (2) Malo oyika valavu yogwiritsidwa ntchito kawirikawiri ayenera kukhala osavuta kugwiritsa ntchito, ndipo kutalika koyenera kuyika ndi 1.2m kuchokera kumalo opangira ntchito. Pamene kutalika kwapakati pa handwheel ya valve kupitirira 2m ya malo ogwiritsira ntchito, nsanja iyenera kukhazikitsidwa kwa gulu la valavu kapena valavu yomwe imagwiritsidwa ntchito kawirikawiri ndi valavu yotetezera, ndipo njira zoyenera ziyenera kuchitidwa kwa valavu yomwe imagwiritsidwa ntchito nthawi zambiri. (monga sprocket, ndodo yowonjezera, nsanja yosunthika ndi makwerero osunthika, ndi zina zotero). Unyolo wa sprocket suyenera kulepheretsa kulowa. Mavavu pa mapaipi ndi zida zokhala ndi zowulutsa zowopsa sizimayikidwa mkati mwa utali wa mutu wa munthu, kuti asapweteke mutu, kapena kuvulaza mwachindunji nkhope ya munthuyo pamene valavu ikutuluka; (3) Valavu yomwe imagwiritsidwa ntchito pazida zogawa iyenera kulumikizidwa mwachindunji ndi pakamwa papaipi ya zida kapena pafupi ndi zida. Vavu pa mzere wa chitoliro cholumikizidwa ndi zida za sing'anga yowopsa kwambiri komanso yowopsa kwambiri iyenera kulumikizidwa mwachindunji ndi pakamwa pazida, ndipo valavu isagwiritse ntchito unyolo woyimirira; (4) Valavu yochizira ngozi monga valavu yamadzi amoto, valavu yamoto ndi ma valve ena awiri ayenera kumwazikana, ndikuganizira zachitetezo cha ngoziyo. Valavu yamtunduwu iyenera kuyikidwa kumbuyo kwa chipinda chowongolera. Kuseri kwa khoma lachitetezo, kunja kwa chitseko cha fakitale, kapena ndi mtunda wotetezeka kuchokera pamalo angozi; Pofuna kuyatsa ngozi, woyendetsa akhoza kugwira ntchito motetezeka; (5) Kuwonjezera pa zofunikira zapadera za ndondomekoyi, valavu pansi pa chitoliro cha nsanja, chowongolera, chotengera choyima ndi zipangizo zina sizidzakonzedwa mu skirt; (6) valavu yodulidwa ya chitoliro cha nthambi yopingasa yochokera ku chitoliro chouma iyenera kukhala pafupi ndi muzu wa gawo lopingasa la chitoliro; (7) valavu yokweza cheke iyenera kuyikidwa mu payipi yopingasa, valavu yokweza yokwera iyenera kuyikidwa mu chitoliro chapakati kuchokera pansi kupita pamwamba pa payipi yowongoka. Swing cheke valavu ayenera kuikidwa mwadala anaika mu payipi yopingasa, akhoza kuikidwa mu chitoliro sing'anga otaya kuchokera pansi mpaka ofukula payipi; Vavu pansi ayenera kuikidwa mu centrifugal mpope suction unsembe kutalika, akhoza kusankha gulugufe cheke valavu; Pompo kubwereketsa ndi olumikizidwa chitoliro m'mimba mwake si zogwirizana, akhoza kusankha yafupika awiri valavu cheke; (8) pakati mtunda pakati pa handwheel wa valavu anakonza mozungulira nsanja opaleshoni ndi m'mphepete mwa nsanja opaleshoni sayenera kukhala wamkulu kuposa 450mm, pamene tsinde ndi handwheel kuwonjezera pamwamba pa nsanja ndi kutalika ndi zosakwana 2m, izo. sayenera kusokoneza ntchito ndi njira ya woyendetsa; (9) Vavu ya payipi yapansi panthaka iyenera kukhala mu ngalande ya chitoliro kapena chitsime cha valve, ndipo ngati kuli kofunikira, ndodo yowonjezera valavu iyenera kukhazikitsidwa. Chitsime chamadzi amoto chiyenera kukhala ndi zizindikiro zoonekeratu; (10) Kwa valavu yomwe ili paipi yopingasa, mayendedwe a tsinde amatha kutsimikiziridwa motere: choyimirira mmwamba; mlingo; Kutalika kwa 45; Kutsika pansi 45; Palibe ofukula pansi; (11) Valve tsinde yopingasa kukhazikitsa valavu ya mtundu wa ndodo yotseguka, valavu ikatsegulidwa, tsinde la valve silidzakhudza ndimeyi. Yang'anani kuyika ma valve kumafuna chidwi (1) Malo oyika, kutalika, kulowetsa ndi kutumiza kunja kuyenera kukwaniritsa zofunikira za mapangidwe, tcherani khutu kumayendedwe apakati ayenera kukhala ogwirizana ndi mivi yolembedwa ndi thupi la valve, kulumikiza kukhale kolimba komanso kolimba. . (2) Maonekedwe a valavu ayenera kufufuzidwa asanakhazikitsidwe, ndipo dzina la valve liyenera kutsatizana ndi zomwe zilipo panopa "General Valve Logo" GB 12220. Pakuti kuthamanga kwa ntchito kuli kwakukulu kuposa 1.0mpa komanso mu chitoliro chachikulu kudula udindo valavu, ayenera kuikidwa pamaso pa mphamvu ndi okhwima ntchito mayeso, oyenerera pambuyo ntchito. Pakuyesa mphamvu, kuthamanga kwa mayeso ndi nthawi 1.5 ya kukakamiza mwadzina, ndipo nthawiyo si yochepera 5min. Chigoba cha valve ndi kulongedza ziyenera kuyeneretsedwa popanda kutayikira. Kulimbitsa thupi, kuthamanga kwa mayeso ndi 1.1 nthawi za kukakamiza mwadzina; Kutalika kwa mayeso kumayenderana ndi zofunikira za GB 50243. (3) Musati mupangitse kulemera kwa valve cheke mu payipi, valavu yayikulu yoyang'ana (AETV valavu imodzi) : iyenera kukhala ** * yothandizidwa, kuti ikhale osakhudzidwa ndi kukakamizidwa kopangidwa ndi chitoliro.