Coal conveyor belt is one of the most important components in coal transportation. Once a fire occured on conveyor belt, it is easy to cause the whole transportation system breakdown. So early fire detection is necessary for coal conveyor belt.

Solutions to prevent:

Plan A

If the width of conveyor belt is less than 0.4m, protect it with an equal length of optical fiber sensor cable. Optical fiber sensor cable is fixed directly on the appendant right above the centre of the conveyor belt less than 2.25m. The appendant can be a supporting wire or original fixture. Supporting wire’s function is to offer a support. Every 75m fixed it with a bolt to fit the supporting wire. To prevent optical fiber sensor cable falling down, every 4m-5m fixed it with a fixture to lock the optical fiber sensor cable on supporting wire. The material of the supporting wire should use 2mm stainless steel wire (or replaced with galvanized steel wire).

Plan B

If the width of conveyor belt over 0.4m, optical fiber sensor located at both side of the conveyor belt to detect overheat caused by bearing friction and coal powder accumlation. Generally design and install principle is on the premise of having no influence with normal operation and maintenance, and then according to actual situation. If necessary, such as in a high fire risk environment, optical fiber sensor can be laid both on the right above and two sides of the conveyor belt. The on-site picture is shown as follows: