Importance Of Explosion And Fire Protection For Plastic Cable Waterproof Joints

With the requirements of urban planning, there are more and more cable tunnels, which bring great convenience to people's life and work. However, there are also some problems in cable tunnels. Among them, explosions of plastic cable waterproof joints occasionally cause fires in cable tunnels. Today, the editor will introduce to you the importance of explosion and fire prevention of joints.

There are two main reasons for fires in cable tunnels:

One is fires caused by external fire sources. However, cable tunnels are basically designed with closed processing and isolated from the outside, so the probability of this happening is relatively small.

The second type is fire accidents caused by cable body failures, which are more likely to occur. Due to the rough manufacturing process of cable joints, loose crimping, large contact resistance, and moisture in cable insulation or cable core, the temperature will cause the cable to rise in temperature during operation, and even burn through insulation, leading to explosions and fires.

Generally speaking, the temperature at the fault point of Nylon Cable Gland changes from low to high, so the fault does not occur suddenly, but accumulates to a certain extent before it occurs.

Installing an optical fiber temperature measurement system at the joint can accurately detect the temperature changes of the cable during operation. When the cable temperature is too high, we can find the fault in time and deal with it, which can prevent accidents.

The cables in the cable tunnel are densely laid, and cables of different specifications may be laid together. In addition, the ventilation in the tunnel is relatively poor. Once an explosion and fire occurs in one of the parts, a three-dimensional combustion will be formed. Therefore, it is very important to make the plastic cable waterproof joint explosion-proof and fire-proof.