Explosion-Proof Electrical Equipment Operating Environment

Raws li GB3836.1-2010 “Explosive Atmospheres Part 1: Cov khoom siv dav dav,” Cov khoom siv hluav taws xob tawg yog tsim los rau kev ua haujlwm hauv huab cua ib puag ncig. Cov xwm txheej atmospheric muaj xws li:

1. Lub atmospheric siab ntau los ntawm 0.08 rau 0.11 MPa;

2. Ib oxygen concentration ntawm 21% (los ntawm ntim) hauv huab cua txheem, nrog rau lwm yam inert gases zoo li nitrogen constituting 79% (los ntawm ntim);

3. Ib puag ncig kub ntawm -20 ° C thiab 60 ° C.

Qhov chaw ua haujlwm ntawm cov khoom siv hluav taws xob yog qhov tseem ceeb rau nws txoj kev nyab xeeb. Piv txwv li, Cov khoom siv hluav taws xob tawg feem ntau tau teev tseg kom ua haujlwm hauv qhov kub ntawm -20 ° C txog 40 ° C. Tsawg atmospheric siab, uas implies huab cua nyias, tuaj yeem cuam tshuam rau kev ua kom txias ntawm cov khoom siv hluav taws xob. Ib yam li ntawd, Kev hloov pauv hauv atmospheric kub cuam tshuam kev ua haujlwm txias, ncaj qha cuam tshuam cov cuab yeej ua haujlwm ua haujlwm.

Thaum cov khoom siv hluav taws xob tsim ib puag ncig sib txawv ntawm qhov tseeb atmospheric tej yam kev mob, Nws yog ib qho tseem ceeb los kho cov kev txwv, tshwj xeeb tshaj yog rau cov khoom siv hluav taws xob siab, kom tswj tau cov qauv kev nyab xeeb.

Qhov ntsuas kub ua haujlwm ib puag ncig, teem caij thaum lub sij hawm tsim, qhia txog qhov ntsuas kub uas tso cai rau cov khoom siv ua haujlwm. Qhov ntsuas kub ib puag ncig no tsim lub hauv paus rau tag nrho cov cuab yeej ntsuas kev ua haujlwm. Qhov sib txawv ntawm qhov tseeb thiab tsim ib puag ncig tuaj yeem ua rau kev ua haujlwm tsis zoo lossis, mob hnyav, ua haujlwm tsis zoo. Tshwj xeeb rau Cov khoom siv hluav taws xob tawg, Tshaj li qhov ntsuas kub tau teev tseg tuaj yeem cuam tshuam qhov tawg-pov thawj kev ncaj ncees ntawm qee yam.

Ntxiv mus, cov pa oxygen cov ntsiab lus tseem ceeb cuam tshuam rau kev nyab xeeb ntawm cov khoom siv hluav taws xob tawg. Cov cuab yeej ua haujlwm tau npaj rau tawg Cheebtsam hauv ib “oxygen nplua nuj” kev teeb tsa yuav ua rau muaj kev pheej hmoo. Nyob rau hauv ib puag ncig zoo li no, cov hloov combustion cov khoom ntawm cov nplaim hluav taws xob tuaj yeem cuam tshuam qhov kev ua haujlwm ntawm cov cuab yeej tsim los rau cov txheej txheem txheem.