- Zoyenera komanso kukonzekera kukakamiza kwa chitoliro chaukadaulo
I.1.Dongosolo la mapaipilo limalizidwa ndipo likugwirizana ndi zofunikira za mapangidwe ndi malamulo.
I.2.Nthambi, hanger ndi choyikapo chitoliro zatha, ndipo kuzindikira zolakwika za ray kwafika kwathunthu pamapangidwewo, ndipo gawo la mayeso, weld ndi zina ziyenera kuyesedwa sizimapakidwa utoto komanso kulumikizidwa.
I.3.Kuyeza kukakamiza kwa mayeso kwatsimikiziridwa, kulondola kumayikidwa ku 1.5, ndipo mtengo wathunthu wa tebulo uyenera kukhala 1.5 mpaka 2 nthawi zambiri zomwe zimayesedwa.
I.4.Asanayambe kuyesedwa, dongosolo loyesera, zipangizo ndi zomangira sizidzaphatikizidwa mu dongosolo loyesera, ndipo malo a bolodi akhungu amagwiritsidwa ntchito kuyika chizindikiro choyera cha lacquer ndi zolemba.
I.5.Madzi oyesera ayenera kugwiritsidwa ntchito ndi madzi oyera, ndipo chloride ion zili m'madzi sayenera kupitirira 25 × 10-6 (25 ppm).
I.6.Paipi yanthawi yochepa yoyeserera imalimbikitsidwa, ndipo chitetezo ndi kudalirika kuyenera kuyang'aniridwa.
I.7.Yang'anani ngati mavavu onse pa chitoliro ali pa malo otseguka, ngati ma spacers awonjezedwa, ndipo chigawo cha valve chobwezeretsa chiyenera kuchotsedwa, ndipo pambuyo poyeretsa akhoza kukonzanso.
2. Kuyesa kwa mapaipi
2.1.Kuthamanga kwa chitoliro cha chitoliro ndi nthawi 1.5 kuposa kukakamiza kwa mapangidwe.
2.2. Pamene payipi ndi zipangizo zimayesedwa ngati dongosolo, kupanikizika kwa chitoliro kwa chitoliro kumakhala kofanana kapena kucheperapo kusiyana ndi kukakamiza kwa chipangizocho, ndipo kupanikizika kwa chipangizocho sikucheperachepera 1.15 nthawi ya chitoliro cha mapangidwe, ndipo akhoza kuyesedwa molingana ndi kupanikizika kwa mayesero a zipangizo.
2.3.When dongosolo jekeseni, mpweya uyenera kutha, malo otulutsa mpweya ayenera kukhala malo apamwamba kwambiri a payipi, ndi kuwonjezera valavu yotulutsa mpweya.
2.4. Kwa mapaipi omwe ali ndi kusiyana kwakukulu, kuthamanga kwa static kwa sing'anga yoyesera kuyenera kuyesedwa muyeso yoyesera.Kuyesedwa kwa chitoliro chamadzimadzi kuyenera kutsatiridwa pamlingo wapamwamba kwambiri, koma kupanikizika kotsika kwambiri sikuyenera kupitirira zigawo za chubu.
2.5. Kupanikizika kukakanikizidwa, kuwonjezereka kuyenera kukhala pang'onopang'ono, ndipo pambuyo pa kukakamizidwa kwa mayesero, kumayendetsedwa kwa 10 min, ndipo palibe deformation popanda kutaya.Kupanikizika kwa mayeso kumatsikira ku kukakamiza kwa mapangidwe, kuyimitsa mphindi 30, ndipo kupanikizika sikugwa, palibe kutayikira komwe kuli koyenera.
2.6. Pambuyo pa kuyesedwa, mbale yakhungu iyenera kuchotsedwa nthawi, ndipo madzi amaikidwa, ndipo kupanikizika koipa kuyenera kutetezedwa pamene kutsekedwa, ndipo sayenera kukhetsa madzi.Pamene kutayikira kumapezeka panthawi yoyesedwa, sikuyenera kukonzedwa, pambuyo pochotsa chilemacho, chiyenera kuyesedwanso.
2.7.Kuyezetsa kutayikira kunachitika pambuyo poyesa kupanikizika, ndipo sing'anga yoyesera idagwiritsa ntchito mpweya woponderezedwa.
2.8. Kuthamanga kwa mayeso a leak kudapangidwa kuti apange kukakamiza, kuyezetsa kutayikira kuyenera kuyang'ana pakuyang'ana zodzaza, flange kapena ulusi wolumikizira, valavu yotulutsa, valavu yotulutsa, valavu yotulutsa, ndi zina zambiri, ndikuwunika kotulutsa thovu popanda kutayikira.
3. kukonza chitoliro ndi kuyeretsa
3.1. Zofunikira zamakono zamakono
3.1.1. Njira yopangira mapaipi iyenera kugawidwa ndikuyeretsa (kutchedwa kuyeretsa).
3.1.2. Njira yowomba imatsimikiziridwa molingana ndi zofunikira zogwiritsira ntchito payipi, njira yonyansa ya pamwamba pa sing'anga yogwirira ntchito ndi chitoliro chamkati chimatsimikiziridwa, ndipo ndondomeko yowumitsa tsitsi imachitika motsatira woyang'anira, chitoliro chanthambi. , ndi chubu chotulutsa.
3.1.3. Asanayambe kuwomba, chida chomwe chili mkati mwa dongosololi chiyenera kutetezedwa ndikuchotsa mbale ya orifice, valavu yosinthira fyuluta ndi thupi la valve lotulutsidwa, etc., moyenera, ndi zina zotero.
3.1.4. Potsuka, dothi mu chitoliro siliyenera kulowa mu zipangizo, ndipo dothi lotulutsidwa kuchokera ku chipangizocho silidzalowa mu chitoliro, valavu ya valve imawonjezeredwa.
3.1.5. Kutsuka kwa chitoliro kuyenera kukhala ndikuyenda kokwanira, ndipo kuthamanga kwa kuyeretsa sikuyenera kupitilira kukakamiza kwa mapangidwe, ndipo kuthamanga kwamadzi nthawi zambiri sikuchepera 20 m / s.Mukatsuka, gwiritsani ntchito nyundo yamatabwa kuti mumenye chubu, ndikuyang'ana pa weld ndi pansi pa chitoliro, koma musawononge chitoliro.
3.1.6. Nthambi ya chitoliro iyenera kuganiziridwa isanayambe kuwomba, ndipo kukwera kwa hanger kuyenera kulimbikitsidwa ngati kuli kofunikira.
3.2. Kuyeretsa mapaipi, kuyeretsa njira
3.2.1. Kuchapira madzi: Sing'anga yogwirira ntchito ndiyo payipi yamadzi.Kutsuka madzi kumatha kufika pamlingo wothamanga kwambiri kapena osachepera 1.5 m / s mu chubu.Ndiwoyenera kutumiza madzi kunja ndi kuwonekera ndi khomo.Chitolirocho chikatsuka, madziwo ayenera kutha panthawi yake.
3.2.2.Kuyeretsa mpweya: Sing'anga yogwirira ntchito imatsukidwa pang'onopang'ono ndi magawo ampweya a mapaipi a gasi.Mukakumana ndi valavu, muyenera kuchotsa kutsogolo kutsogolo kwa bolodi la docking, ndiyeno muyikhazikitsenso chitolirocho chikawombedwa.Kuthamanga sayenera kupitirira chidebe ndi chitoliro kamangidwe ka chitoliro, ndi otaya mlingo sayenera zosakwana 20 m / s.Panthawi yotsuka mpweya, pamene mpweya wotulutsa mpweya sukusuta, doko lotulutsa mpweya limayikidwa mu doko lotulutsa mpweya kuti liyese cholinga chamatabwa cha lacquered, ndipo palibe dzimbiri, fumbi, chinyezi, ndi zinyalala zina pa mbale yomwe ikukhudzidwa mu 5 min.
3.2.3.Steam purge: Malo ogwirira ntchito amatsukidwa ndi nthunzi mupaipi ya nthunzi.Nthunzi amatsukidwa pamaso ofunda chubu ayenera pang'onopang'ono, ndiye mwachibadwa kuziziritsa kutentha yozungulira, ndiye kukweza chubu ofunda, kuchita kuyeretsa kachiwiri, kotero kubwerezabwereza zambiri zosachepera katatu.Mpweya wotuluka mu nthunzi umapendekera m'mwamba, ndipo chizindikirocho chimakhala chokopa.Kutalika kwa chitoliro cha utsi sikuyenera kukhala kochepa kuposa kukula kwa chubu la purge.Muyezo woyenerera: Zolinga zosintha kawiri kawiri zotsatizana, monga mawanga owoneka ndi maso pamtengo wamba pansi pa φ 0.6mm, kuya kwakuya ndi 1 / cm2;nthawi yoyeretsa ndi mphindi 15 (mwachitsanzo, ziwiri Ngati chiphaso chadutsa.
Nthawi yotumiza: Nov-25-2021