Seb cov kab hluav taws xob ntawm ib qhotawg-pov thawj hluav taws xob rhaubyuav tsum tau insulating daim ntawv thov nyob rau hauv ib tug kev ntsuam xyuas ntawm tej yam tawg-pov thawj hom, tus qauv yuav tsum tau, thiab tiag tiag daim ntawv thov scenarios.
I. Cov ntsiab lus tseem ceeb ntawm cov txheej txheem tshwj xeeb
1. GB 3836.1-2021 (Cov Lus Qhia Dav Dav rau Cov Khoom Siv Hauv Cov Cuab Yeej Hluav Taws Xob)
Cov txheej txheem no suav nrog cov kev cai rau thaj chaw muaj plua plav tab sis tsis tsim cov kev cai yuav tsum tau ua ntawm cov kua roj vanish txau rau hauv cov hlua txuas rau cov khoom siv Class II (xws litawg-pov thawj hluav taws xob cua sov).
Rau cov cuab yeej siv hauv chav kawm I (cov mines hauv av hauv av), cov chaw sab hauv ntawm cov hlau thaiv cov hlau yuav tsum tau coated nrog arc-resistant xim (xws li 1320 epoxy porcelain xim) los tiv thaiv arc-induced gas explosions. Txawm li cas los xij, tsis muaj cov cai tshwj xeeb tau teev tseg rau cov cuab yeej siv hauv Chav Kawm II (cov chaw tsis yog cov thee mining ib puag ncig xws li cov nroj tsuag tshuaj, roj thiab roj, thiab lwm yam).
2. Kev tsim tshwj xeeb ntawm Flameproof (Ex d) Khoom siv
Lub mating nto ntawm cov ntaub thaiv npog yuav tsum tau txais kev kho mob phosphating thiab coated nrog cov roj xeb (xws li 204-1 anti-xeb roj) kom ntseeg tau tias sealing thiab corrosion kuj. Txawm hais tias cov roj los tiv thaiv xeb muaj qee yam insulating zog, nws tsis yog tshwj xeeb insulating xim.
Yog hais tias muaj cov conductors raug los yog flashover txaus ntshai nyob rau hauv lub wiring chamber, tus tsim yuav tsum ua raws li cov qauv (piv txwv li, GB / T 16935.1) los ntawm clearance thiab creepage nrug, es tsis txhob cia siab rau ib leeg rau insulating cov kua roj vanish.
3. Rwb thaiv tsev yuav tsum tau ua kom muaj kev ruaj ntseg (Ex e) Khoom siv
Txhim khu kev ruaj ntseg cov cuab yeej yuav tsum xyuas kom meej tsis muaj sparks thaum lub sij hawm ib txwm ua hauj lwm, nrog rau nws cov hluav taws xob chamber lub rwb thaiv tsev kev ua tau zoo feem ntau cia siab rau cov ntaub ntawv insulating (xws li ceramics, epoxy resin) thiab conductor sheathing, es tsis yog txheej txheej ntawm lub chamber.
Yog hais tias lub nto ntawm lub insulating tivthaiv puas lawm, nws yuav tsum tau kho nrog insulating xim ntawm tib qib, tab sis tsis muaj yuav tsum tau rau tag nrho cov kab noj hniav yuav tsum tau coated.
II. Kev txiav txim siab hauv kev siv tswv yim
1. Muaj nuj nqi thiab kev txwv ntawm Insulating Varnish
Qhov zoo: Cov xim rwb thaiv tsev tuaj yeem txhim kho qhov chaw rwb thaiv tsev lub zog (xws li arc tsis kam thiab tiv thaiv to), ua rau nws tsim tshwj xeeb rau cov av noo lossis plua plav. Piv txwv li, siv 20-30μm ntawm epoxy insulating xim tuaj yeem ua rau cov rwb thaiv tsev tiv thaiv kom ntau dua 85%.
Risk: Insulating xim yuav cuam tshuam rau cov cua kub dissipation. Piv txwv li, kev tawg-pov thawjhluav taws xob rhauboptimizes tshav kub dissipation los ntawm cua txias vents thiab inert gas filling. Kev txau ntau dhau tuaj yeem cuam tshuam cov thermal tshuav nyiaj li cas. Tsis tas li ntawd, cov xim insulating yuav tsum dhau qhov ntsuas kub ntawm qhov ntsuas kub (xws li, siab dua 150 ° C) lossis nws yuav ua tsis tiav.
2. Kev Lag Luam Kev Ua Lag Luam thiab Cov Txheej Txheem Tsim Khoom
Ex-dustproof khoom: Feem ntau cov tuam txhab siv cov tshuaj tiv thaiv xeb (xws li, C06-1 hlau liab alkyd primer) nyob rau hauv cov hlau chamber, tab sis insulating xim tsis tas yuav tsum tau. Piv txwv li, ib qho kev tawg-pov thawj lub cev muaj zog hlws ris lub thawv ua haujlwm "primer + arc-resistant magnetic paint" ua ke, txhawb kev rwb thaiv tsev tsuas yog hauv thaj chaw davhlau ya nyob twg.
Cov cuab yeej muaj kev ruaj ntseg ntxiv: Kev tsom xam ntau dua yog muab tso rau ntawm kev ntseeg siab ntawm cov neeg siv khoom sib txuas (xws li cov khoom siv los tiv thaiv xoom) thiab xaiv cov ntaub ntawv insulating, thaum cov kab noj hniav tsis tsim nyog.
3. Xav tau ntxiv rau cov xwm txheej tshwj xeeb
High-corrosion ib puag ncig (xws li cov ntug dej hiav txwv lossis cov chaw muaj tshuaj lom neeg): Siv cov tshuaj tiv thaiv corrosion (xws li, ZS-1091 ceramic insulating txheej) kom ntseeg tau tias cov tshuaj tiv thaiv thiab rwb thaiv tsev.
Cov cuab yeej siv hluav taws xob siab (piv txwv li, siab dua 10kV): Gradient-thickness anti-corona xim yuav tsum tau siv los txhawm rau tshem tawm ib nrab.
III. Cov lus xaus thiab cov lus pom zoo
1. Yuav tsum tau txau cov xwm txheej
Tsuas yog cov kab hluav taws xob ntawm cov khoom siv hauv chav kawm I (rau cov mines hauv av) yuav tsum tau coated nrog arc-resistant xim.
Yog tias cov cuab yeej txhim kho nws qhov kev tawg-pov thawj los ntawm kev siv cov xim insulating (xws li, kom ua tau raws li qhov ntsuas IP siab dua lossis kev tiv thaiv corrosion), qhov no yuav tsum tau hais meej meej hauv cov ntaub ntawv pov thawj.
2. Cov xwm txheej tsis tsim nyog tab sis pom zoo
Rau cov cuab yeej II, nws raug nquahu kom siv cov xim insulating yog tias muaj cov xwm txheej hauv qab no:
Cov kab hluav taws xob muaj qhov chaw me me, nrog rau kev tshem tawm hluav taws xob lossis kev nkag mus ze rau qhov kev txwv.
High ambient humidity (piv txwv li, RH> 90%) los yog muaj cov hmoov av conductive.
Cov cuab yeej siv yuav tsum tau ua haujlwm ntev thiab tsis yooj yim rau kev tswj hwm (xws li, faus lossis kaw kev teeb tsa).
Nws raug nquahu kom xaiv cov kub-resistant (≥135 ° C) thiab cov nplaum nplaum nplaum nplaum nplaum (xws li epoxy polyester xim), nrog lub thickness tswj ntawm 20-30μm kom sib npaug rwb thaiv tsev thiab kub dissipation.
3. Txheej txheem thiab Kev Tshawb Fawb
Ua ntej tshuaj tsuag, kab noj hniav yuav tsum tau kho sandblasting (Sa2.5 qib) kom ntseeg tau cov xim zaj duab xis adhesion.
Tom qab ua tiav, lub rwb thaiv tsev tsis kam (≥10MΩ) thiab lub zog dielectric (piv txwv li, 1760V / 2min) yuav tsum tau kuaj, thiab cov tshuaj ntsev ntsev (xws li, 5% NaCl tov, 1000 teev tsis muaj xeb) yuav tsum dhau.
Yog tias koj xav paub ntau ntxiv txog peb cov khoom, thovtiv tauj peb!
Post lub sij hawm: Oct-09-2025
