The difference between explosion-proof camera and ordinary camera

As far as the explosion-proof camera itself is concerned, there is no essential difference between the optoelectronic structure and the ordinary industrial camera. It is characterized by using one or more explosion-proof types to process industrial cameras, so that it can be applied in a flammable and explosive field environment.

Early explosion-proof cameras were mainly intrinsically safe and positive pressure. The characteristic of the intrinsically safe explosion-proof camera is that the circuit of the camera is intrinsically safe. The electrical circuit output or input is designed to be controlled below the energy enough to cause hydrogen to ignite and explode, so that it will not produce electricity during normal operation. Sparks, arcs, and high temperatures to avoid detonating explosive materials. The high unit cost of this type of explosion-proof camera structure is a major disadvantage, and it is also not conducive to future upgrades. The positive pressure type is a common structure of the early American explosion-proof camera products. It is very inconvenient to maintain during use. If it is not carefully maintained, the risk of detonation is quite large. What this structure has seen so far has been basically eliminated by the explosion-proof camera industry except for a few Taiwanese manufacturers that are still manufacturing.

Although there are many types of explosion-proof electrical appliances, they are not all suitable for explosion-proof cameras. Such as oil-filled type, sand-filled type, etc., can not be used on explosion-proof cameras.

The current international mainstream method of explosion-proof cameras is explosion-proof. The utility model is characterized in that a conventional ordinary camera is placed in a specially-made shell, which has the function of isolating the sparks and arcs generated by the electrical components in the shell from the explosive mixture outside the shell, and can withstand the explosive mixture entering the shell. The explosion pressure generated by the sparks and arcs of the electrical equipment is detonated, and the outer shell is not destroyed; at the same time, it can prevent the explosion products in the shell from propagating to the explosive mixture outside the shell, and will not cause the explosive mixture outside the shell to burn and explode. This kind of camera with flameproof enclosure is "explosion-proof explosion-proof camera". And this special shell is called "explosion-proof enclosure", we usually call it "explosion-proof camera protective cover".

In other words, the explosion-proof explosion-proof camera is equal to "explosion-proof camera protective cover" + ordinary camera and lens. In this case, as long as the size is appropriate, the engineer can freely choose the built-in camera and lens, and the cost is also reduced. For future maintenance, it is also more convenient, you can open the cover to remove the camera and lens after power off.

Such "explosion-proof camera protective cover" is usually made of high-strength stainless steel resistant to explosion pressure and impact, and is extremely strong. The wall thickness of good quality products is more than 5MM, which is more than that of riot bomb-level anti-riot cameras.

In many cases, stainless steel housings are far superior to aluminum housings, such as corrosion resistance. Especially the survivability in a fire situation is much better.

These two examples are mainly to illustrate the good survivability of high-quality explosion-proof cameras, not to suggest that you try this extreme environment. For explosion-resistant environments, our usual practice is to thicken; there are special models for high-temperature combustion environments.

In addition, there are so-called airtight explosion-proof protective covers on the market, but this type of airtight casing cannot be disassembled at will to ensure the air tightness of Yongjiu. If it is disassembled, the airtightness test must be repeated after sealing.