Kev piav qhia ntawm Explosion-Proof Signs

Cov cim tawg-pov thawj hauv kev tawg-pov thawj teeb pom kev zoo yog ib daim ntawv lo uas piav qhia txog qib tawg-pov thawj, kub pawg, hom, thiab thaj chaw siv ntawm cov teeb pom kev zoo.

Kev piav qhia ntawm Kev Tshawb Fawb Kev Tshawb Fawb:

Raws li GB 3836 qauv, cov cim tawg-pov thawj ntawm cov teeb pom kev zoo suav nrog:

Hom tawg-pov thawj + Qeb khoom siv + (Gas Group) + Kub Group.

1. Hom tawg-pov thawj:

Rooj 1 Hom Kev tawg-pov thawj

Daim ntawv pov thawj tawg	Daim ntawv pov thawj tawg	Daim ntawv pov thawj tawg	Daim ntawv pov thawj tawg
Flameproof hom	EX ua d	Xuab zeb puv hom	EX qw
Ntau hom kev nyab xeeb	EX thiab	Encapsulation	EX ua m
Hom Barotropic	EX p	N-type	EX ua n
Intrinsically muaj kev nyab xeeb hom	EX ua EX ua	Hom tshwj xeeb	EX os
Roj ntxeem tau hom	EX lub	Plua plav tawg-pov thawj hom	EX UA EX IB

2. Qeb khoom siv:

Cov khoom siv hluav taws xob rau tawg gas atmospheres muab faib ua:

Chav kawm I: Rau siv hauv cov mines;

Chav II: Siv rau hauv cov pa cua tawg uas tsis yog cov mines.

Chav II tawg-pov thawj “d” thiab kev nyab xeeb ntawm sab hauv “i” Cov khoom siv hluav taws xob tau muab faib ua IIA ntxiv, IIB, thiab cov chav kawm IIC.

Cov khoom siv hluav taws xob rau hmoov av combustible ib puag ncig muab faib ua:

Hom A cov khoom siv plua plav nruj; Hom B cov khoom siv plua plav nruj;

Hom A cov khoom siv plua plav pov thawj; Hom B cov khoom siv plua plav pov thawj.

3. Kev piav qhia ntawm Kev Tshawb Fawb Kev Tshawb Fawb:

Lub peev xwm ntawm cov roj sib tov sib xyaw kom nthuav tawm qhov tawg qhia tias nws theem ntawm kev phom sij tawg. Qhov muaj peev xwm tshaj tawm qhov tawg, siab dua qhov txaus ntshai. Qhov peev xwm no tuaj yeem sawv cev los ntawm qhov kev sim siab tshaj plaws kev nyab xeeb qhov sib txawv. Ntxiv thiab, qhov yooj yim nrog uas tawg gases, vapors, los yog huab cua tuaj yeem ua tau taws kuj qhia txog theem ntawm kev puas tsuaj tawg, sawv cev los ntawm qhov tsawg kawg nkaus igniting tam sim no piv. Chav Kawm II tawg-pov thawj lossis cov khoom siv hluav taws xob muaj kev nyab xeeb hauv nruab nrab yog ntxiv rau hauv IIA, IIB, thiab IIC raws li lawv qhov muaj feem cuam tshuam qhov kev sim siab tshaj plaws kev nyab xeeb qhov sib txawv los yog qhov tsawg kawg nkaus igniting tam sim no piv.
Rooj 2 Kev sib raug zoo ntawm pab pawg ntawm Explosive Gas Mixtures thiab qhov siab tshaj plaws kev sim kev nyab xeeb qhov sib txawv los yog qhov tsawg kawg nkaus Igniting Current Ratio

Gas pawg	Qhov siab tshaj qhov ntsuas kev nyab xeeb MESG (m m)	Yam tsawg kawg ignition tam sim no piv MICR
IIA	MESG> 0.9	MICR> 0.8
IIB	0.9MESG ≥0.5	0.8≥MICR≥0.45
IIC	0.5≥ MSG	0.45＞ MICR

4. Kub Group:

Qhov hluav taws xob kub ntawm qhov sib tov ntawm cov pa tawg yog qhov txwv qhov kub ntawm qhov uas nws tuaj yeem ua rau ignited.
Cov khoom siv hluav taws xob tau muab faib ua pawg T1 txog T6 raws li lawv qhov kub thiab txias tshaj plaws, kom ntseeg tau tias qhov siab tshaj plaws saum npoo ntawm cov khoom siv tsis pub tshaj qhov tso cai ntawm cov pab pawg kub sib xws. Kev sib raug zoo ntawm cov pab pawg kub, khoom siv saum npoo kub, thiab ignition kub ntawm nplaim taws gases los yog vapors qhia nyob rau hauv Table 3.

Rooj 3 Kev sib raug zoo ntawm Pawg Kub Kub, Cov khoom siv qhov kub thiab txias, thiab Ignition Temperature ntawm Flammable Gases los yog Vapors

Qhov kub thiab txias IEC / EN / GB 3836	Qhov siab tshaj qhov kub ntawm cov khoom siv T [℃]	Lgnition kub ntawm cov khoom combustible [℃]
T1	450	T 450
T2	300	450≥ T 300
T3	200	300≥ T 200
T4	135	200≥T ＞ 135
T5	100	135≥T 100
T6	85	100≥T8

5. Yuav tsum tau teeb tsa cov cim:

(1) Cov cim yuav tsum tau muab tso rau hauv lub cev tseem ceeb ntawm cov khoom siv hluav taws xob;
(2) Cov cim yuav tsum nyob twj ywm meej thiab ruaj khov nyob rau hauv cov tshuaj muaj zog corrosion. Cov cim xws li Ex, hom tawg-pov thawj, qeb, thiab pab pawg kub tuaj yeem embossed lossis debossed ntawm qhov pom ntawm qhov casing. Cov khoom siv rau daim npav npav yuav tsum muaj tshuaj tiv thaiv, xws li bronze, tooj dag, los yog stainless hlau.

Technical Specifications