Electrostatic breakdown pinhole tsis ua hauj lwm yog hais txog tsis yog -conductive PFA hauv ob sab phlu tsis tu ncua tsub kom zoo li qub rau ntawm nws sab hauv lub sijhawm siab -ceev khiav ntawm cov organic hnyav, kua hydrocarbon thiab qis - conductivity nruab nrab. Thaum electrostatic muaj peev xwm accumulates mus rau qhov pib tawg, instantaneous spark paug nkag mus rau hauv ob sab phlu los ua me me los ntawm pinholes. Corrosive nruab nrab nkag mus rau hauv lub interlayer ntawm ob sab thiab steel puag yeeb nkab, ua rau lub hauv paus hlau corrosion thiab interlayer bubbling tev tawm. Nyob rau hauv cov xwm txheej hnyav, cov hluav taws xob hluav taws xob tuaj yeem ua rau hluav taws xob hluav taws xob nruab nrab thiab ua rau muaj kev phom sij tawg. Qhov kev ua tsis tiav no feem ntau tshwm sim hauv cov kav xa dej xa cov kuab tshuaj ntshiab huv, qis- cov kua tshuaj polarity thiab siab - ntws tsis yog - xov xwm conductive.
1. Static Charge Accumulation thiab Breakdown Perforation Mechanism
PFA yog ib qho zoo heev hluav taws xob insulator nrog tsis tshua muaj conductivity. Thaum qis- cov kua dej conductivity ntws ntawm kev kub ceev thiab rub tawm ntawm cov phab ntsa sab hauv, kev sib cais yuav tshwm sim ntawm ob -theem interface. Cov nqi zoo thiab qhov tsis zoo sib cais thiab sib sau ua ke ntawm cov ntaub hauv ob sab phlu thiab cov kua dej ua ntu zus. Txij li cov fluoroplastic txheej tsis tuaj yeem ua hluav taws xob zoo li qub rau cov yeeb nkab steel sab nraud rau kev tso tawm, qhov sib txawv muaj peev xwm nce mus txog rau thaum lub zog hluav taws xob siv ntau tshaj qhov dielectric tiv thaiv qhov voltage txwv ntawm PFA cov khoom. Qhov nqaim hluav taws xob channel yog tsim tam sim ntawd txhawm rau txhawm rau micro los ntawm - qhov ntawm hauv ob sab phlu. Tsis zoo li txhua yam puncture tshwm sim los ntawm cov teeb meem txawv teb chaws, qhov kev puas tsuaj no yog ib qho kev puas tsuaj ntawm dielectric nrog aperture me me thiab muaj zog zais hauv thawj theem.
2. Tej yam hauj lwm ua rau muaj kev puas tsuaj zoo li qub
Twj lub qhov hluav taws xob ncaj cov yeeb nkab ntu nrog qhov siab tshaj plaws ntws tawm thiab cov kua dej sib txhuam uas muaj zog tshaj plaws;
Lub luj tshib thiab tee txoj hauj lwm nrog drastic flow direction hloov thiab intensified turbulence nqi sib cais;
Cov yeeb nkab reducer qhov twg ntws nrawm nrawm nrawm thiab nrawm nrawm nrawm nrawm nrawm;
Ntev -nruab nrab txoj kab ncaj nraim uas tsis muaj cov ntsiab lus tshem tawm zoo li ntawm txoj kev;
Pipeline siab -gas point-kua ob- ntu ntu nrog kev sib txhuam hnyav ntawm cov kua thiab npuas.
3. Core Inducing Factors Accelerating Static Failure
Cov khoom nruab nrab muaj ultra- conductivity tsawg, tsis muaj ions dawb los ua kom tsis muaj nqi zoo li qub;
Cov kav dej tsis muaj qhov nruab nrog static grounding thiab static tshem tawm cov cuab yeej;
Kev khiav hauj lwm txaus siab tshaj qhov kev tiv thaiv - zoo li qub tsim txwv, ua rau kom them nqi sai;
Cov hauv ob sab phlu yog cov qauv ntshiab insulating yam tsis muaj kev hloov pauv hloov thiab ua haujlwm zoo li qub;
Qhov system tsis muaj inert gas sealing, cua npuas sib xyaw rau hauv nruab nrab kom ua rau muaj kev sib txhuam hluav taws xob ntau dua.
4. Tag nrho -Txuas Kev Tiv Thaiv thiab Tswj Kev Ntsuas Kev Ntsuas
① Txais siv los tiv thaiv - zoo li qub hloov pauv cov hluav taws xob PFA hauv ob sab phlu rau cov nplaim taws thiab qis -cov kav dej nruab nrab
Pab kom them cov dej xau mus rau cov yeeb nkab steel sab nraud los ntawm cov kab hauv nws tus kheej.
② Teeb tsa ntau- taw tes txhim khu kev qha hauv av rau tag nrho cov yeeb nkab steel network kom paub cov hluav taws xob zoo li qub rau hauv lub ntiaj teb
Tsim ib lub voj voog ua tiav kom tshem tawm qhov sib txawv ntawm qhov tseem ceeb.
③ txwv cov raj xa dej nrawm nrawm raws li kev tiv thaiv- cov qauv tsim tshwj xeeb
Txo qhov kev sib txhuam ntawm kev sib txhuam thiab them nqi tsim nqi ntawm qhov chaw.
④ Nruab cov khoom siv hluav taws xob zoo li qub hauv online thiab cov khoom siv ion neutralization ntawm cov yeeb nkab tseem ceeb
Ua haujlwm nruab nrab ntawm cov nqi hluav taws xob ntau hauv lub sijhawm.
⑤ Ua kom pom cov hluav taws xob tsis tu ncua thiab hauv ob sab phlu dielectric zog kuaj ntawm cov kav dej
Tshuaj ntsuam tawm me me tawg pinholes ua ntej nruab nrab to tshwm sim.
5. Kev Tiv Thaiv Cov Teeb Meem Sib piv
表格
| Pipeline Design & Grounding Hom | Electrostatic Breakdown Risk | Daim ntawv thov tswv yim |
|---|---|---|
| Ntshiab insulating hauv ob sab phlu + tsis muaj qhov hauv av + dhau - txwv tus nqi ntws | Static breakdown pinholes tshwm nyob rau hauv lub voj voog ua haujlwm luv | Hloov nrog cov khoom tiv thaiv- zoo li qub hauv ob sab phlu thiab ua tiav cov kav dej hauv av hloov pauv |
| Conductive hloov hauv ob sab phlu + tag nrho -system grounding + flow rate interlock txwv | Ua tau zoo kom tsis txhob them cov nqi tsub zuj zuj thiab dielectric tawg | Txuj kev nyab xeeb tsim tshwj xeeb rau flammable hnyav PFA lined cua sov pipelines |
| Kev soj ntsuam zoo li qub + tsis siv neeg ion nruab nrab + kev tshuaj xyuas txhua xyoo dielectric | Tsis tshua muaj kev tawg perforation thiab hluav taws tawg zais kev phom sij | Cov tswv yim nyiam rau petrochemical thiab flammable nruab nrab tiv thaiv -corrosion cua sov yeeb nkab network |
Xaus
PFA hauv ob sab phlu electrostatic tawm nkag mus tsis ua hauj lwm pib los ntawm kev sib txhuam hluav taws xob ntawm qis - conductivity nruab nrab ntawm insulating hauv ob sab phlu, ua rau cov nqi tsub zuj zuj thiab dielectric breakdown spark perforation. Cov txheej txheem tiv thaiv tseem ceeb suav nrog kev siv cov khoom siv hluav taws xob los tiv thaiv- cov ntaub ntawv zoo li qub, siv cov raj xa dej hauv av tiv thaiv, tswj cov dej ntws nruab nrab, teeb tsa cov khoom siv tshem tawm zoo li qub thiab ntxiv dag zog rau kev soj ntsuam dielectric tsis tu ncua. Tag nrho- txheej txheem kaw- kev tswj lub voj voog ntawm kev xaiv cov khoom siv, kev tsim qauv hauv av thiab cov txheej txheem kev tswj xyuas tuaj yeem tiv thaiv cov kab hauv qab pinhole to thiab hluav taws kev nyab xeeb raug xwm txheej tshwm sim los ntawm electrostatic tawg ntawm PFA kab cua sov raj.
