Under the low temperature environment in winter, the temperature of the geographical location of the tunnel drops sharply, and the wind speed at the tunnel mouth and other parts is relatively large, which makes the interior of the tunnel in a humid state for a long time. Fire-fighting pipes in tunnels are easy to freeze, so high-speed tunnel fire-fighting pipes need to be insulated, especially the electric heat tracing insulation system.
It is recommended that you use electric heat tracing products for tunnels. The advantages:
1. The heating element of the electric heat tracing product is an alloy wire, which has no aging phenomenon after long-term use, no power attenuation, and a service life of more than 25 years.
2. The length of the electric heat tracing for tunnels is designed to be 10-1000 meters, and the electric heat tracing circuit is reasonably reduced. Reduce 85% hidden trouble spots, reduce construction workload and post-maintenance workload.
3. Electric heat tracing for tunnel uses self-heating alloy wire as the power carrier, which saves a lot of power cable consumption. According to past statistics, about 60% of the cable consumption is saved.
3. The power is constant, there is no change in long-term use, and the service life is more than 25 years;
4. Temperature control mode, temperature control digital display, less loops;
In addition, the tunnel electric heat tracing system can build a monitoring station to make the heat tracing inspection simpler, which has incomparable advantages compared with the traditional tunnel heat tracing method.
1. The traditional electric heat tracing control box controls the temperature of the pipeline in the tunnel, and the staff cannot check the electric heat tracing work at any time. When the electric heat tracing system fails, it is difficult to find the fault in time, which is easy to cause the pipeline to freeze and crack. An electric heat tracing monitoring workstation is set up in the monitoring center, and the staff can check the electric heat tracing work in time.
2. When the traditional electric heat tracing control box modifies the electric heat tracing parameters, personnel need to enter the tunnel to manually modify it. When the tunnel is normally open to traffic, it is very dangerous for personnel to work in the tunnel. Electric heat tracing monitoring workstations are set up in the monitoring center, and electric heat tracing working parameters, such as set temperature, temperature return difference, etc., can be modified at any time in the monitoring workstation.
3. In the traditional electric heat tracing control box, when the temperature measuring probe of the thermostat is abnormal, the thermostat cannot work normally, and personnel are required to set up forced heating in the tunnel. When the tunnel is normally open to traffic, it is very dangerous for personnel to work in the tunnel. Set up an electric heat tracing monitoring workstation in the monitoring center, which can be forced to start electric heat tracing heating at the monitoring workstation, without the need to go to the site for manual heating.