Explosion-proof anticorrosive pump explosion-proof occasions what grade standard?

by:J&T     2020-06-19
Explosion-proof anticorrosive water pump is corrosion, explosion-proof performance, such as when the user need explosion-proof anticorrosive water pump, must according to the demand of the explosion-proof, so why do you want to go with your explosion-proof anticorrosive water pump, explosion-proof occasions what, what explosive-proof grade standard? Many workplace will produce some combustible materials. The coal mine around two-thirds of all the places have explosive material; In chemical industry, about 80% or more of the production workshop area there is explosive material. Oxygen: oxygen in the air is everywhere. Light source: electrical instrumentation is used in great quantities in the production process, all sorts of friction spark, spark mechanical wear, spark and high temperature is inevitable, especially when the instrument, electrical failure occurs. Many industrial field explosion conditions objectively. When explosive material mixed with oxygen concentration in the explosion limit range, if any explosion source, will be an explosion. So take explosion protection is very necessary. A, explosion-proof terms: for explosion-proof terminology and standard safety grid safety parameter definition: safety barrier allows high voltage: Um guarantee safety barrier in the end the Ann performance, allowing the this AnDuan may input high voltage safety barrier high open circuit voltage: Uoc in high allows this AnDuan voltage range voltage when open big value safety grid short-circuit current, Isc in high allows this AnDuan short-circuit current voltage range large value safety barrier allows distributed capacitance: Ca to ensure the essence safety case AnDuan large external capacitance safety barrier to allow distributed inductance: La ensure the essence safety case AnDuan big allowing external inductance, explosion-proof marks format description: explosion danger medium factories or mines, according to the ignition energy, small light temperature and time for the explosive dangerous gas exist periodic grade of scientific classification, to determine the explosion protection signs and form of explosion-proof equipment. Explosion-proof marks format: Ex ( ia) Ⅱ T4 explosion-proof mark explosion-proof grade C gas categories temperature category 3, explosion-proof grade description: ia level: a breakdown in normal work, and the two failure are not lit up the electrical equipment of the explosive gas mixtures. The normal work, the safety factor of 2. 0; A failure, safety coefficient is 1. 5; Two failure, safety coefficient is 1. 0. Note: there is a spark of contact must add flame-proof double shell, airtight shell or improve safety coefficient. The ib level: a breakdown in the normal work and cannot ignite explosive gas mixture of electrical equipment. The normal work, the safety factor of 2. 0; A failure, safety coefficient is 1. 5. Normal work, contact spark should add flame-proof shells or airtight enclosure protection, and measures of fault since the show, a failure safety coefficient is 1. 0.
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