Fuel for both oil-fired and gas-fired boilers is flammable and explosive.And because of this, boiler room explosion is more harmful, its source is generally electricity, natural gas and oil (such as oil, etc.).Therefore, boiler room explosion-proof from the electrical, oil and gas management.
1. The source
The locations where explosive materials can be released are known as release sources, but airtight containers and pipes themselves are not considered to be sources of release.Only when an accident occurs or when there is a leakage of explosive or inflammable material under normal circumstances can it be considered as a source of leakage.To return to the point, the sources of inflammables should be classified according to their release frequency and time.For flammable and explosive items, the most important thing is to ensure that no leakage occurs.However, there is no guarantee that such leaks, such as automatic instrumentation, automatic analysis and valves, will not occur.Therefore, the explosion-proof problem of electrical equipment working in different environments is the top priority.
2. The ignition source
Can have ignition effect a lot of things, such as flame, sparks, chemical reaction heat and heat on the surface of the object are likely to bring the ignition, and then become a fire, and electrical equipment will also be a fire, such as: switch, knife switch, magnetic starter, etc, they are in operation after engineering as well as the arc starting, surface heating electric equipment, can be a fire.Therefore, in electrical design, the most important thing is to guard against ignition problems caused by electrical equipment.
3. Explosive concentration
An explosive mixture is formed only when an explosive gas is mixed with air in a certain proportion.This ratio is called explosive concentration.An explosion does not occur when the mixture concentration is below or above the upper limit of the explosion concentration, but only in the danger zone.Therefore, in the design of oil and gas boiler room, it is necessary to pay attention to the detection of explosive mixture concentration and timely ventilation.
——Author：ebico