Flange sealing tsis ua hauj lwm feem ntau tshwm sim los ntawm kev laus, compression creep, nruab nrab erosion thiab thermal voj voog qaug zog ntawm gasket ntawm flange khub. Lub sealing cushion maj mam poob elasticity thiab compression resilience, lub pre-tightening compression gap qhib, thiab cov txheej txheem nruab nrab nkag mus rau lub flange sib koom ua ke los tsim tawm sab nraud. Hauv qhov xwm txheej hnyav, qhov nro nro tsis ua haujlwm vim yog gasket thinning, lub ntsej muag flange sib cais ntau, thiab qhov nruab nrab loj heev tshwm sim, yuam kaw lub kaw lus. Qhov kev ua tsis tiav no muaj ntau heev nyob rau hauv cov kav dej disassembled kev sib txuas cov ntsiab lus thiab cov khoom siv inlet- qhov hluav taws xob sib txuas, yog ib qho teeb meem ntawm kev saib xyuas tsis tu ncua ntawm cov kav dej cua sov.
1. Gasket Deterioration thiab Leakage Mechanism
Tom qab cov bolts tau nruj, lub gasket yog nyem los sau cov qhov khoob me me ntawm ob lub flange sealing ntsej muag thiab thaiv cov dej permeation channel. Nyob rau hauv lub sijhawm ntev - kub kub, cov khoom siv gasket tau dhau los ua qhov tsis tuaj yeem deformation, ua kom nyias nyias thiab tsis tuaj yeem rov qab los tom qab tso siab. Thermal expansion thiab contraction cycles ua rau lub bolt ua ntej -tightening force tsis tu ncua. Meanwhile, corrosive nruab nrab infiltrates ntug ntawm lub gasket, ua rau cov khoom o, dissolution thiab pulverization puas. Lub sealing interface poob zoo compression foob, thiab siab -tsav nruab nrab overflows sab nraud raws flange clearance. Flange nto khawb, deformation thiab warpage yuav txuas ntxiv rhuav tshem txoj siv hlua khi thiab ua kom cov dej ntws tawm.
2. Tej yam hauj lwm ua rau Flange Sealing tsis ua hauj lwm
Cov khoom siv inlet thiab qhov hluav taws xob flanges thiab cov kav xa dej hauv qab flanges yuav tsum tau ua kom tsis tu ncua;
Flange pob qij txha nyob rau hauv siab - qhov kub thiab txias alternating seem nrog thermal stress loj;
Flange kev sib txuas nyob ib sab ntawm lub twj tso kua mis thiab compressors raug kev txom nyem ntev - lub sij hawm txhua yam kev co;
Flange ntsej muag raug corrosive chav thiab condensate nrog nruam nruab nrab yaig;
Loj - txoj kab uas hla flanges nrog tsis sib npaug bolt zawm quab yuam ua rau poob siab ib nrab.
3. Cov ntsiab lus tseem ceeb ua kom nrawm dua Gasket tsis ua haujlwm
Tsis sib haum ntawm cov khoom siv gasket thiab ua haujlwm kub & nruab nrab corrosion kuj;
Tsis sib npaug bolt fastening torque ua rau hauv zos tsis txaus compression ntawm lub nplhaib sealing;
Ntev - lub sij hawm creep aging yam tsis muaj sij hawm hloov ntawm qhov tsis zoo sealing qhov chaw;
Flange sealing nto khawb, pits thiab khoov deformation ua rau lub gasket puas;
Thermal kev nyuaj siab thiab kev co tsis tu ncua attenuating bolt preload yam tsis muaj kev sib tw thib ob.
4. Tag nrho -Txuas Kev Tiv Thaiv thiab Tswj Kev Ntsuas Kev Ntsuas
① Xaiv cov ntaub ntawv gasket sib piv qhov kub thiab txias nruab nrab
Txais graphite saj zawg zog, PTFE composite los yog hlau qhov txhab gaskets haum rau kub thiab corrosion.
② Siv cov hlaws symmetrical torque bolt zawm
Tighten bolts diagonally nyob rau hauv ob peb kis nrog torque ciaj ntswj kom ntseeg tau tias zoo compression.
③ Tsim lub voj voog ruaj ruaj gasket hloov kho txoj kev npaj
Mandatorily txuas dua tshiab sealing gaskets thaum lub sij hawm qhov system loj overhaul kom tsis txhob muaj kev laus tsis ua hauj lwm.
④ Tiv thaiv flange sealing nto thaum lub sij hawm disassembly thiab sib dhos
Tiv thaiv khawb thiab cuam tshuam kev puas tsuaj; kho deformed flange ntsej muag los ntawm machining thaum tsim nyog.
⑤ Ua qhov kev txhawb zog thib ob tom qab pib cua sov pib
Txhawb nqa ua ntej-tightening force poob los ntawm qhov pib thermal shrinkage thiab gasket creep.
5. Kev Tiv Thaiv Cov Teeb Meem Sib piv
表格
| Installation & Maintenance hom | Flange Leakage Risk | Daim ntawv thov tswv yim |
|---|---|---|
| Random nruj + zoo tib yam roj hmab gasket + tsis hloov tsis tu ncua | Luv -lub sij hawm laus to thiab flange gap spraying | Hloov nrog lub gasket haum thiab standardize torque fastening tam sim ntawd |
| Torque cross fastening + matched sealing khoom + periodic hloov | Ua tau zoo kom tsis txhob flange interface to | Standard tsim thiab tu specification |
| Hlau kauv qhov txhab gasket + dual reinforcement + anti- xoob bolt ntsuas | Tsawg heev sealing tsis ua hauj lwm muaj feem yuav | Kev kub siab, kev vibration thiab corrosive ib puag ncig nyiam cov txheej txheem |
Xaus
Flange gasket sealing tsis ua hauj lwm ntawm 316 stainless hlau cua sov raj yog tshwm sim los ntawm cov khoom creep aging, nruab nrab erosion, uneven compression thiab thermal co ua rau poob ntawm sealing compression. Cov txheej txheem tswj tseem ceeb yog xaiv cov ntaub ntawv sib khi sib xws, ua qauv sib xyaw ua ke torque sib dhos, tiv thaiv flange sealing nto, npaj hloov tsis tu ncua thiab ntxiv ua ntej - zawm quab yuam tom qab kub nce. Kev tswj xyuas nruj ntawm cov txheej txheem kev teeb tsa thiab kev kho dua tshiab tuaj yeem tshem tawm kev kaw ntau lawm thiab kev nyab xeeb kev nyab xeeb coj los ntawm flange to ntawm cov kav dej cua sov.
