Txhais thiab Txoj Cai ntawm Cov Khoom Siv Hluav Taws Xob Flameproof

Txhais:

Cov khoom siv hluav taws xob tawg, denoted los ntawm lub cim “d,” yog ib daim ntawv classic ntawm cov khoom tawg-pov thawj. Tau ntau xyoo lawm, cov qauv flameproof tau yog qhov kev xaiv tseem ceeb hauv kev txhim kho thiab siv cov khoom siv hluav taws xob tawg. Xws li cov khoom siv hluav taws xob flameproof muaj kev ntseeg siab hauv kev nyab xeeb tawg, muaj mature manufacturing technology, thiab txaus siab rau lub neej ua haujlwm ntev. Lawv tau dav siv nyob rau hauv qhov chaw muaj kev phom sij nrog ntau yam sib xyaw ua ke roj-cua. Txawm li cas los, vim o flameproof qauv, cov khoom siv no me ntsis hnyav thiab loj.

Lub hauv paus ntsiab lus ntawm kev tiv thaiv tawg:

Kev nyab xeeb thiab tawg-pov thawj kev ua tau zoo ntawm hom khoom siv hluav taws xob no tau lees paub los ntawm lub casing hu ua “flameproof enclosure.”

A “flameproof enclosure” tso cai combustible gas-air mixs rau combust thiab tawg sab hauv lub casing tab sis tiv thaiv cov khoom tawg los ntawm rupturing lub casing los yog khiav los ntawm ib qho kev nkag mus rau sab nrauv uas tuaj yeem ignite cov khoom tawg nyob ib puag ncig.. Ntev npaum li qhov siab tshaj plaws kub ntawm qhov thaiv tsis pub tshaj qhov kub ntawm chav kawm rau nws cov pab pawg npaj, cov cuab yeej yuav tsis dhau los ua qhov hluav taws kub rau qhov sib xyaw ntawm cov pa roj-cua sib tov.

Qhov no yog li cas cov khoom siv hluav taws xob flameproof ua haujlwm.

To taub txoj ntsiab cai no, peb tuaj yeem txiav txim siab tias lub casing ntawm cov khoom siv hluav taws xob tsis zoo yuav tsum muaj lub zog siv hluav taws xob txaus los tiv thaiv qhov tawg siab tsim sab hauv yam tsis muaj kev cuam tshuam loj lossis puas tsuaj.. Qhov sib txawv ntawm cov khoom ntawm cov khoom siv hluav taws xob tsis zoo, uas tsim cov channel los ntawm sab hauv mus rau sab nraud, yuav tsum muaj qhov loj me me uas tsim nyog uas tuaj yeem txo lossis tiv thaiv kev khiav tawm ntawm cov khoom tawg. Txoj kev no, ignition ntawm tawg gas-air sib tov nyob ib ncig ntawm cov cuab yeej tiv thaiv. Cov qib tiv thaiv tawg rau cov khoom siv hluav taws xob flameproof tau muab faib ua peb qib: IIA, IIB, thiab IIC. Cov qib kev tiv thaiv ntawm cov khoom siv kuj tuaj yeem muab faib ua peb qib: a, b, thiab c, feem ntau sawv cev hauv kev xyaum ua: Cov khoom siv ntawm Pawg I, Mas and Mb; Cov khoom siv ntawm Pawg II, Ga, Gb, thiab Gc.

Lub enclosure ntawm Cov khoom siv hluav taws xob tawg yuav tsum tau ua los ntawm cov ntaub ntawv uas zoo mechanical zog, xws li steel phaj, nrum hlau, aluminium alloy, tooj liab alloy, stainless hlau, thiab engineering plastics. Lub zog thiab qhov sib txawv yuav tsum ua raws li cov kev cai ntawm GB3836.2-2010 Explosive Atmospheres Part 2: Cov cuab yeej tiv thaiv los ntawm flameproof enclosures.