Tsau Scissor Lift Relay Explosion- Pov Thawj Kev Ntsuas: Cov Qauv Xaiv & Cov Lus Qhia Txog Kev Thov
Cov cuab yeej siv hluav taws xob ruaj khov yog cov cuab yeej tseem ceeb hauv kev lag luam xws li tshuaj lom neeg, roj av, thiab cov khoom lag luam, qhov chaw muaj hluav taws kub thiab tawg. Raws li cov ntsiab lus tseem ceeb ntawm kev tswj hluav taws xob, qhov tawg - pov thawj kev ntsuas ntawm relays ncaj qha cuam tshuam rau kev nyab xeeb ntawm kev ruaj ntseg txiab. Phau ntawv qhia no suav nrog txhua yam koj xav paub txog kev tawg-cov ntaub ntawv pov thawj relay rau kev nqa cov txiab ruaj khov, suav nrog kev faib tawm, kev xaiv cov hauv paus ntsiab lus, thiab kev ceev faj ntawm daim ntawv thov- pab cov lag luam xaiv cov khoom tsim nyog thiab ua kom muaj kev nyab xeeb ntawm kev ua haujlwm.
1. Lub luag haujlwm tseem ceeb ntawm Kev tawg-Cov ntaub ntawv pov thawj rau kev nqa nqa Scissor
Relays ua haujlwm tseem ceeb hauv cov khoom siv hluav taws xob ruaj khov, lub luag haujlwm rau kev hloov hluav taws xob, kev tswj lub teeb liab, thiab kev tiv thaiv overload. Lawv txuas cov tswj tswj mus rau actuators xws li hydraulic twj tso kua mis motors thiab nqa solenoid li qub. Nyob rau hauv ib puag ncig flammable thiab tawg, tiv tauj arcs thiab coil cua sov tsim los ntawm relays thaum lub sij hawm ua hauj lwm yuav yooj yim ignite flammable media yog hais tias tus relay tsis ua raws li qhov yuav tsum tau tawg - pov thawj ntsuam xyuas, ua rau tawg los yog hluav taws.
Explosion-cov ntaub ntawv pov thawj relays cais qhov hluav taws xob sab hauv los ntawm qhov chaw muaj kev phom sij sab nraud los ntawm cov qauv tsim tshwj xeeb (xws li, cov ntaub thaiv npog tsis zoo, kev nyab xeeb sab hauv). Qhov no ua kom tsis muaj kev pheej hmoo ntawm kev nyab xeeb nyob rau hauv ib txwm muaj lossis tsis raug. Txhua qhov tawg-cov ntaub ntawv pov thawj rau kev nqa lub txiab yuav tsum ua raws li lub teb chaws tus qauv GB/T 3836.1-2021 thiab cov qauv pov thawj thoob ntiaj teb.
2. Kev faib tawm ntawm Kev tawg -Kev ntsuas pov thawj rau Kev Siv Hluav Taws Xob Lifted Relays (Cov ntsiab lus tseem ceeb)
Kev tawg- pov thawj qhov kev ntsuas qhov ntsuas muaj tsib ntu: "Ex tawg- cov cim pov thawj + tawg- hom pov thawj + cov khoom siv qeb + chav ntsuas kub + qib tiv thaiv". Hauv qab no yog ib qho kev puas tsuaj uas tsim nyog rau kev siv lub tshuab nqa nqa ruaj khov, haum rau kev xav tau kev nyab xeeb sib txawv.
1.1 Kev tawg yooj yim-Cov ntaub ntawv pov thawj
Hom Flameproof (Mark "d"): Qhov kev xaiv nrov tshaj plaws rau kev nqa nqa nqa. Lub siab - lub zog muaj zog muaj qhov hluav taws kub, tiv thaiv kev tawg hauv siab, thiab tiv thaiv cov nplaim hluav taws. Nws muab faib ua db (rau cov pa tawg- pov thawj scenarios) thiab qib dc. Lub kaw lus feem ntau yog ua los ntawm cam khwb cia aluminium alloy lossis stainless hlau, haum rau feem ntau cov tshuaj thiab roj av siv.
Intrinsic Safety Type (Mark "i"): Txwv cov hluav taws xob hluav taws xob thiab tam sim no kom ntseeg tau tias lub zog tsis txaus rau hluav taws xob hluav taws xob. Compact thiab lub teeb yuag, nws yog qhov zoo tagnrho rau qis - fais fab xwm txheej xws li kev tswj Circuit Court thiab teeb liab kis. Muab faib ua qib ib thiab ic, nws tsim nyog rau qhov chaw muaj plua plav lossis nqaim.
1.2 Khoom Qeb & Gas Group
Relays rau lifts tas li yog nyob rau hauv chav kawm Ⅱ (rau tsis yog - thee mine scenarios). Lawv tau muab faib ua 3 pawg raws li kev phom sij ntawm cov pa roj carbon monoxide, nrog rau txhua pab pawg tsim nyog rau ib puag ncig tshwj xeeb. Kev xaiv yuav tsum nruj me ntsis phim rau ntawm - site flammable medium hom.
Chav Kawm ⅡA: Haum rau cov pa roj tsawg (piv txwv li, propane), siv rau hauv cov khoom siv hluav taws xob zoo tib yam thiab tawg thiab cov teeb meem tshuaj lom neeg.
Chav Kawm ⅡB: Haum rau nruab nrab- cov pa phom sij (piv txwv li, ethylene), dav siv hauv kev lag luam tseem ceeb xws li roj av thiab tshuaj lom neeg- ua rau kev lag luam tus qauv xaiv.
Chav Kawm ⅡC: Tsim nyog rau siab- cov pa phom sij (piv txwv li, hydrogen, acetylene), siv nyob rau hauv siab - phom sij txaus ntshai. Nws muaj kev tawg ntau dua - cov ntaub ntawv pov thawj thiab tus nqi tsim khoom ntau dua.
Nco tseg: Cov pab pawg siab dua yog downward tshaj. Cov pab pawg qis tsis tuaj yeem siv rau hauv siab - cov xwm txheej yuav tsum tau zam kom tsis txhob muaj kev nyab xeeb los ntawm kev tawg tsis txaus- ua pov thawj.
1.3 Chav Kawm Kub (Cov Lus Qhia Tshwj Xeeb)
Chav Kawm T4 (tsawg dua lossis sib npaug li 135 degree): Haum rau qhov kub thiab txias ua haujlwm ntawm feem ntau ruaj khov nqa nqa. Nws yog qhov siv ntau tshaj plaws thiab tus nqi - kev xaiv zoo.
Chav Kawm T5 (tsawg dua lossis sib npaug li 100 degree) & Chav Kawm T6 (tsawg dua lossis sib npaug li 85 degree): Haum rau cov xwm txheej tshwj xeeb xws li cov khoom siv hluav taws xob qis qis thiab qhov kub thiab txias, muab kev nyab xeeb dua.
1.4 Qib Kev Tiv Thaiv Cov Khoom Siv (EPL)
Cov qib Gb uas nquag siv (kev tiv thaiv siab, haum rau thaj tsam 1 thiab Zone 2 cov pa taws hluav taws xob ib puag ncig) ua tau raws li cov khoom tawg yooj yim - cov ntaub ntawv pov thawj ntawm cov khoom siv hluav taws xob ruaj khov. Rau siab - cov xwm txheej txaus ntshai, qib Ga (kev tiv thaiv siab heev, haum rau Zone 0) raug pom zoo los txhim kho kev nyab xeeb.
3. Kev Xaiv Cov Ntsiab Cai rau Kev tawg -Cov ntaub ntawv pov thawj Relays ruaj Scissor nqa
Match On -Site Environment & Medium: Qhia meej rau ntawm - thaj chaw muaj kev phom sij (xws li Zone 1/Zone 2) thiab pab pawg roj nplaim taws. Kev xaiv yuav tsum tau sib haum nrog ib puag ncig. Xa mus rau ntawm -cov ntaub ntawv ntsuam xyuas kev nyab xeeb ntawm qhov chaw kom tsis txhob muaj kev xaiv yuam kev.
Txuas nrog Lub Hom Phiaj Ua Haujlwm: Kev tswj thiab nruab nrab relays tuaj yeem yog qhov kev nyab xeeb hauv nruab nrab lossis hom flameproof. Overload tiv thaiv relays yog qhov zoo dua flameproof nrog chav kawm kub ntawm T4 lossis siab dua kom tsis txhob muaj kev nyab xeeb thaum lub sijhawm cua sov dhau.
Ua raws li Cov Qauv & Cov Ntawv Pov Thawj: Xaiv cov khoom nrog lub teb chaws tawg - ntawv pov thawj pov thawj thiab tawg - ntawv pov thawj. Xyuas kom ua raws li GB/T 3836 series, GB19854-2018, thiab cov qauv thoob ntiaj teb (xws li ATEX, IECEx). Lub relay qhov kev ntsuas tawg-pov thawj yuav tsum sib npaug ntawm tag nrho cov cuab yeej nqa khoom ruaj khov.
Kho kom haum rau cov xwm txheej ua haujlwm: Ua ntej cov relays nrog kev tiv thaiv qib IP65 lossis siab dua kom haum rau siab - av noo thiab plua plav ib puag ncig. Xyuas kom lawv ua tau raws li qhov yuav tsum tau ua ntawm cov khoom pib- nres zaus thiab thauj khoom hloov pauv mus ntev - lub sijhawm ua haujlwm ruaj khov.
4. Daim ntawv thov ceev faj
nruj me ntsis txwv tsis pub siv tshaj qhov ntsuas qib. Relays nrog cov pa roj tsawg lossis chav kawm kub tsis tuaj yeem siv rau hauv siab - qhov yuav tsum tau muaj, vim qhov no yuav ua rau muaj kev nyab xeeb.
Standardize installation thiab txij nkawm. Xyuas kom cov ntaub thaiv npog flameproof tsis zoo thiab zoo - kaw, thiab cable nteg raws li tawg- cov ntaub ntawv pov thawj. Tsis txhob disassemble lub relay yam tsis tau tso cai. Hloov cov relay puas lawm nrog cov khoom ntawm tib tus qauv thiab qib.
Ua pov thawj tsis tu ncua txhua lub hlis twg. Txheeb xyuas qhov kev sib cuag, coil kub, thiab tawg - pov thawj sealing kev ua tau zoo. Txheeb xyuas qhov siv tau ntawm qhov tawg- pov thawj daim ntawv pov thawj kom ntseeg tau tias cov cuab yeej siv tau zoo.
Tsis txhob hloov cov qauv relay lossis hloov tawg -cov ntaub ntawv pov thawj nrog cov khoom qub. Txawm tias muaj xwm txheej ceev, siv tawg- cov khoom pov thawj ntawm tib qib thiab qauv.
5. Cov lus xaus
Kev tawg- pov thawj kev ntsuas ntawm relays yog qhov tseem ceeb rau kev ua haujlwm nyab xeeb ntawm lub tshuab nqa nqa. Qhov kev xaiv tseem ceeb yog Ex d ⅡB T4 Gb flameproof hom, uas ua tau raws li cov kev xav tau ntawm cov tshuaj lom neeg feem ntau, roj av, thiab cov khoom lag luam. Rau siab - ib puag ncig kev pheej hmoo, xaiv Class ⅡC lossis Ga qib khoom. Los ntawm nruj me ntsis raws li cov hauv paus ntsiab lus xaiv thiab standardizing installation thiab txij nkawm, cov lag luam tuaj yeem tiv thaiv kev nyab xeeb kev nyab xeeb, ua kom muaj kev ruaj ntseg ntau lawm, thiab txo cov kev pheej hmoo ntawm kev ua haujlwm.
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