Interlayer bubbling peeling tsis ua hauj lwm yog hais txog corrosive nruab nrab, dej vapor thiab roj nkag mus rau hauv kev sib txuas ntawm PFA hauv ob sab phlu thiab steel substrate los ntawm cov hauv ob sab phlu, microcracks thiab flange gaps. Cov khoom ntim khoom yog gasified thiab nthuav dav nyob rau hauv cov cua kub, ua rau siab - npuas npuas nruab nrab ntawm lub hauv ob sab phlu thiab lub hauv paus yeeb nkab. Lub hauv ob sab phlu yog jacked mus rau hauv pom tseeb bulges. Raws li lub siab sab hauv accumulates tsis tu ncua, kev sib txuas lus sib txuas tawm hauv ntau qhov ntau, thiab cov ntaub ntawv bulged yog torn thiab tawg nyob rau hauv cov dej scouring los yog siab cuam tshuam, ua rau nruab nrab to thiab hauv ob sab phlu fragment blockage. Qhov tsis xws luag no yog ib qho kev ua tsis tiav thib ob uas tau los ntawm cov kab micro- tsis xws luag, uas muaj nyob rau hauv cov kav dej uas tsis tiav sealing thiab cov ntsiab lus me me.
1. Nruab nrab Infiltration thiab Bubble Expansion Failure Mechanism
Cov txheej txheem sintered tsis zoo tuaj yeem thaiv qhov nruab nrab sab nraud infiltration. Thaum lub hauv ob sab phlu muaj me me los ntawm qhov tsis xws luag, txheej txheem kua thiab dej molecules yuav permeate rau hauv lub interlayer nyob rau hauv siab. Thaum lub raj xa dej cua sov, cov kua infiltrated vaporizes rau hauv cov pa roj, thiab qhov ntim nthuav dav ntau ntau zaus, ua rau lub siab kaw siab - lub hnab cua siab ntawm ob sab hauv thiab cov yeeb nkab steel. Lub zog sib txuas tsis tuaj yeem tiv taus lub zog jacking ntawm cov npuas sab hauv, yog li cov ntaub ntawv maj mam cais tawm ntawm cov yeeb nkab phab ntsa thiab cov ntaub ntawv bulges. Tom qab txias, cov roj condenses rau hauv qhov tsis zoo siab, uas ntxiv aggravates hauv ob sab phlu degumming. Tsis zoo li thermal expansion buckling tshwm sim los ntawm thermal kev nyuaj siab ntawm lub hauv ob sab phlu nws tus kheej, qhov kev puas tsuaj no yog tsav los ntawm cov roj siab generated los ntawm txawv teb chaws teeb meem nkag mus rau hauv lub interlayer.
2. Tej yam hauj lwm ua rau muaj kev puas tsuaj
Flange flanging hauv paus qhov khoob qhov nruab nrab yooj yim seeps rau hauv interlayer raws ntug;
Lining pinhole thiab spark detection uas ploj lawm cov ntsiab lus tsim thaum lub sij hawm lub Hoobkas ua;
Kev puas tsuaj rau txoj hauj lwm tom qab dej rauj cuam tshuam thiab txhua yam khawb ntawm lub hauv ob sab phlu;
Welded kho txoj haujlwm ntawm hauv ob sab phlu nrog tsis zoo sealing thiab tsis muaj zog tiv thaiv -permeation peev xwm;
Tuag ceg kav nrog ntev - lub sij hawm zoo li qub nruab nrab accelerating infiltration rau hauv me me tsis xws luag.
3. Core Inducing Factors Accelerating Bubbling Failure
Factory spark to detection and air tightness test tsis tau siv tag nrho, tawm hauv cov micropores zais cia;
Flange installation gasket yog mismatched, ua rau nruab nrab creeping rau hauv ob sab ntug interlayer;
Hauv ob sab phlu yog khawb thiab tawg thaum lub sij hawm thauj mus los thiab hoisting yam tsis kho thiab sealing kev kho mob;
Qhov ntsuas kub nce siab heev tom qab kaw thiab standby, ua rau vaporization sai ntawm cov kua infiltrated;
Ntev - lub sijhawm ua haujlwm yam tsis muaj kev tshuaj xyuas sab hauv, cov ntsiab lus nkag me me maj mam hloov mus rau hauv loj - cheeb tsam bubbling tev tawm.
4. Tag nrho -Txuas Kev Tiv Thaiv thiab Tswj Kev Ntsuas Kev Ntsuas
① Ua 100% siab-ntau zaus qhov hluav taws xob kuaj pom thiab tag nrho- ntu huab cua nruj xyuas ua ntej khoom xa tuaj
Tshem tawm qhov nkag mus rau micropore tsis xws luag los ntawm lub Hoobkas qhov chaw.
② Xaiv qhov loj me-matched anti-seepage gaskets rau flange kev sib txuas thiab tswj cov ntsia liaj qhov rooj ua ntej- zawm quab yuam
Thaiv cov channel rau nruab nrab kom ntxeem tau ntawm ntug flanging.
③ Tsim cov hoisting thiab kev tiv thaiv kev thauj mus los tshwj xeeb kom tsis txhob muaj cov khoom tawv khawb khawb hauv ob sab hauv thiab sab nrauv
Kho thiab kaw tam sim ntawd thaum pom kev puas tsuaj.
④ Txais segmented qeeb kub nce kev ua haujlwm kom tiv thaiv tau vaporization sai thiab nrawm nrawm ntawm interlayer infiltrant
Txo qhov kev loj hlob tsav quab yuam ntawm interlayer npuas.
⑤ Ua cov tshuaj ntsuam xyuas endoscopic thiab ntsuas qhov sib txawv ntawm qhov tseem ceeb ntawm cov kav dej
Tshawb nrhiav cov pob me me thiab qhov chaw zais degumming ua ntej ua ntej loj - cheeb tsam tev tawm.
5. Kev Tiv Thaiv Cov Teeb Meem Sib piv
表格
| Kev tshuaj xyuas & kev teeb tsa hom | Interlayer Bubbling Risk | Daim ntawv thov tswv yim |
|---|---|---|
| Kev kuaj pom tsis tiav + tsis yog - qauv flange sealing + hauv ob sab phlu puas | Pom tseeb bulging thiab hauv ob sab phlu rupture to tshwm sim nyob rau hauv nruab nrab kev pab cuam voj voog | Hloov cov yeeb nkab fittings thiab rov- ua kom tiav cov kav dej tsis zoo thiab kev sib khi |
| Lub Hoobkas nruj tsis yog -kev kuaj kev puas tsuaj + txheem flange sealing + tiav cov khoom tiv thaiv kev tswj hwm | Zoo txiav tawm qhov nruab nrab infiltration txoj kev thiab inhibit interlayer npuas tiam | Txuj kev tswj xyuas qhov tshwj xeeb rau PFA lined yeeb nkab prefabrication thiab teb installation |
| Hloov kho siab -density tiv thaiv-permeation hauv ob sab phlu + tag nrho- kab hauv online saib xyuas siab + kev tshuaj xyuas video hauv ib xyoos | Tsawg heev interlayer bulging thiab hauv ob sab phlu shedding blockage zais txaus ntshai | Cov tswv yim nyiam rau siab - kub thiab siab - siab los tiv thaiv -corrosion cua sov pipeline engineering tej yaam num |
Xaus
PFA hauv ob sab phlu interlayer bubbling delamination tsis ua hauj lwm yog tshwm sim los ntawm nruab nrab nkag mus rau hauv lub hauv ob sab phlu tsis xws luag mus rau hauv lub tsev txhab nyiaj interlayer, uas vaporizes thiab nthuav nyob rau hauv cua kub los tsim jacking siab thiab cais lub hauv ob sab phlu los ntawm cov yeeb nkab steel. Cov txheej txheem kev tiv thaiv tseem ceeb suav nrog kev kuaj xyuas lub Hoobkas nruj kom tshem tawm cov micropores, ua qauv flange sealing los tiv thaiv ntug infiltration, tiv thaiv hauv ob sab hauv kev ncaj ncees thaum lub sij hawm tsim kho, tsis txhob kub ceev thiab ntxiv dag zog rau kev soj ntsuam sab hauv. Tag nrho - txheej txheem kaw- kev tswj lub voj voog ntawm cov khoom ex- kev tshuaj xyuas lub Hoobkas, ntawm - kev tsim kho thiab kev ua haujlwm txhua hnub tuaj yeem tiv thaiv cov raj xa dej thiab cov dej xau nruab nrab kev nyab xeeb tshwm sim los ntawm interlayer bubbling peeling ntawm PFA kab cua sov raj.
