Momwe Mungapangire Kulumikiza kwa Pipe Ndi Kusindikiza Kukhala Odalirika Kwambiri

Nthawi zambiri kuchedwa kwa ntchito sikumachokera kumayendedwe olunjika. Amachokera m'malo olumikizirana{1}}zovuta zokwanira{2}}m'mwamba, kukonza zowotcherera mobwerezabwereza, bawuti{3}}kusokoneza mabowo, kutayikira kwa hydrotest, ndi zikalata zovomera zomwe sizikugwirizana. Kulumikizana kodalirika kwa chitoliro ndi kusindikiza kumadalira pazinthu ziwiri: geometry yokhazikika yokhazikika komanso katundu wosindikiza wobwerezabwereza.

1. Malumikizidwe owotcherera-chomwe chimayendetsa bata ndi chiyani?

Cholowa chokhazikika chowotcherera chimachokera ku kusasinthasintha, kukwanira-mmwamba, kuwotcherera, ndi kuyang'anira. M'malo mwake, kusintha kwa geometry ndi kutentha-kusinthasintha kwazomwe zimakulitsidwa.

• Kumaliza kukonzekera kusasinthasintha

Ngati ngodya ya bevel, malo, kapena kumapeto-kukomedwa kwa nkhope kumasiyanasiyana, mizu imatseguka ndipo zenera la weld limachepera. Chizindikiro chodziwika bwino ndi kuchuluka kwa ziphaso zosagwirizana pamzere womwewo.

• Kuwongolera-ndi kuyanjanitsa

Kutsegula kwa mizu, kusagwirizana kwamkati, ndi ovality / concentricity zimakhudza mwachindunji kusakanikirana kwa mizu ndi zotsatira za NDE. Tizigawo tating'onoting'ono-pakhoma, tating'ono ta OD, ndi{2}}zophatikiza zazifupi ndizosavuta kumva.

• Kutentha-zenera lolowera lofanana ndi zinthu ndi makulidwe

Kutsika kwambiri kumawonjezera kusowa kwa chiwopsezo cholowa / kulowa; kukwera kwambiri kumawonjezera kuwonongeka ndipo kumatha kukhudza mawonekedwe a nkhope-.

• Kuyang'ana ndi kukonza kupezeka

Ngati mafupa ali odzaza pafupi ndi zothandizira, makoma, ma valve, kapena zipangizo, NDE ndi kukonzanso kupeza nthawi zambiri kumakhala dalaivala weniweni wa chiopsezo.

Malumikizidwe omangirira ku flange, kusokonekera kwa weld kumatha kusintha vutolo kuchoka pa vuto la weld-kukhala vuto losindikiza{1}}kudontha komweko komwe kumachitika chifukwa cha kupanikizana kosagwirizana ndi gasket.

2. Kuwotchera socket/fillet-chifukwa chake malamulo ophatikizira ndi ofunika kwambiri kuposa maonekedwe

Zolumikizira za socket-nthawi zambiri zimawoneka bwino, koma kukhazikika kumadalira kwambiri machitidwe obwerezabwereza.

• Kuzama kokhazikika kolowetsa ndi kusiyana kwa mapewa
• Fillet weld geometry yobwerezabwereza, makamaka m'malo olowera movutikira
• Kuzindikira kwakukulu kwa kutopa pansi pa ntchito yoyendetsa njinga ndi kugwedezeka
• Crevice-ukhondo ndi dzimbiri m'malo ogwirizana ndi malo ochezera

3. Malumikizidwe amtundu-kudalirika ndi njira yolumikizirana

Zolumikizira zokhala ndi ulusi zimakhala zokhazikika monga momwe zimakhalira kumbuyo kwawo.

• Fomu yolondola ya ulusi ndi chiyanjano chokwanira
• Kuwongolera kuwonongeka pa ulusi
• Mtundu wokhazikika wa sealant ndi njira yogwiritsira ntchito
• Kukhwimitsa kumatanthawuza ndi{0}}kuwunikanso machitidwe
• Chotsani zoletsa-malingaliro omasuka pansi pa kugwedezeka ndi kuyendetsa njinga yamoto

Malumikizidwe a Flange amatanthauzira mtundu wa msonkhano mwachindunji kukhala zotsatira zosindikiza. Kusindikiza kokhazikika kumafuna zinthu zitatu kuti ziwongoleredwe palimodzi: mawonekedwe a nkhope ya flange, zenera logwira ntchito la gasket, komanso kudzaza bawuti kobwerezabwereza.

1. Mkhalidwe wa nkhope ya flange

• Kusanja / kugwedezeka kumayendetsa kufanana
• Mapeto a pamwamba amakhudza kuluma gasket ndi kuchira
• Ma Nicks, dents, ndi dzimbiri zimakhala njira zotayikira
• Kupotoka kwa kuwotcherera kumatha kupangitsa kuti -kupanikizane kwambiri

Chizindikiro chakumunda ndi kutayikira komwe kumakhazikika mbali imodzi kapena kuzungulira ma bolts angapo, osadutsanso mozungulira mozungulira.

2. Gasket ntchito zenera

• -kukanikizana kumayambitsa kutayikira msanga
• Kuponderezana-kumaphwanya gasket ndikuchepetsa kuchira, nthawi zambiri kumakhala koipitsitsa pambuyo pa matenthedwe
• Kutentha ndi zofalitsa zimafulumizitsa kukwapula / kupumula, kuchepetsa kupsinjika kwa gasket pakapita nthawi

Kukweza gasket kokha kuli ndi phindu lochepa ngati mawonekedwe a nkhope kapena kusasinthika kwapang'onopang'ono ndiye vuto lenileni.

3. Bolt preload kusasinthasintha

• Kumangirira kosiyanasiyana kumapangitsa kupsinjika kwa gasket kosagwirizana
• Kumangitsa mopitirira-kungathe kupindika nkhope ndi kuchepetsa kukhazikika kwa kusindikiza
• Kupaka mafuta ndi kusiyanasiyana kumapangitsa kuti torque-iyambe{1}}kusemphana
• Kutentha komanso kugwedezeka kumachepetsa kudzaza, nthawi zambiri kumayambitsa-kuchucha koyambirira

Khwerero 1: Yang'anani nkhope ya flange kaye

• Zowonongeka zowoneka: ma nick, zokala, madontho, mawanga a dzimbiri
• Zizindikiro za kukhudzana osagwirizana kapena kupotoza, makamaka pambuyo kuwotcherera
• Mawonekedwe a malo otayira omwe amagwirizana ndi zovuta zam'deralo

Khwerero 2: Tsimikizirani kukwanira kwa gasket ndi machitidwe oponderezedwa

• Zoyenerana ndi media / kutentha / kuyeretsa
• Kusindikiza kosafanana, kuphwanya komweko, kapena kusinthika kwachilendo
• "Limbani zambiri koma ndikudonthabe" mapatani omwe amawonetsa kukanikizana kosagwirizana kapena kutsitsa kosakhazikika

Gawo 3: Tsimikizirani kubwerezedwanso

• Kumangirira kotsatizana kotsatizana ndi kumangitsa mwasiteji
• Kukhazikika kokwanira kokwanira komanso kukangana
• Kudziwitsa za ngozi zotayika zonyamula katundu pansi pa njinga yamoto komanso kugwedezeka

• Kukonzekera komaliza sikunagwirizane ndi njira yowotcherera → geometry drift → kukonza kumawonjezeka
• Zokwanira-mmwamba/mayanidwe osawongoleredwa → kusagwirizana kwamkati ndi mizu yosakhazikika → kulephera kwa NDE
• Spool tolerance stack-mmwamba → bawuti-bowo molakwika → kukakamiza kuyika
• Kusokonekera kwa kuwotcherera kumakhudza nkhope za flange → kupsinjika kwa gasket kosafanana → kutayikira kwapamadzi kwa hydrotest
• Kukhwimitsa kumasiyanasiyana malinga ndi ogwira nawo ntchito → kuyikatu scatter → msanga-kutha kwa moyo

Nthawi zambiri maunyolo amakakamizika kuyanjanitsa kuti mabowo akhale pamzere → kuponderezana kwa gasket kosagwirizana → kutayikira panthawi yoyesa → kulimbitsa kwambiri → kupotoza kwa nkhope → kudontha kobwerezabwereza.

Kuti agwirizane ndi mapaipi ndi kuvomereza kusindikiza, owerengera nthawi zambiri amayang'ana zinthu zomwe zingatheke, zoyezeka, komanso zotsimikizika:

• Traceability: chizindikiritso cha kutentha / batch ndi satifiketi
• Interface-critical geometry: end condition, aignment, flange-face condition, bolt{2}}bole kuyanjanitsa
• Kuwunika kofunikira ndi zolemba zoyesa polojekiti iliyonse
• Zolemba paketi zojambulidwa nthawi zonse pamndandanda wa mawonekedwe

M'mapulojekiti a Octal Pipe, zigawo ndi zolemba nthawi zambiri zimakonzedwa molingana ndi mndandanda wa mawonekedwe amodzi kotero kuti malingaliro ogwirizanitsa, njira yosindikizira, ndi zolemba zovomerezeka zimakhala zogwirizana komanso zosavuta kuzifufuza.

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