Tunnel pipes withstand severe cold, Huanrui electric heating system is stable and consistent

Tunnels play an important role in modern transportation infrastructure, especially in complex terrain conditions. They provide safer, faster and more stable passages for traffic. The safety and reliability of pipelines are also crucial in modern tunnel construction and operations. In winter, the average temperature in the tunnel will drop, and the water supply, drainage, fire protection and other pipes in the tunnel are easily blocked by freezing, affecting the flow of media in the pipes.
With its unique technical advantages, Huanrui's electric heating system has been successfully used in many important tunnel pipeline insulation projects, demonstrating its ability to maintain pipeline temperature stability in cold environments.

Shenyang Expressway Tunnel Fire Protection System Electric Heating Belt Antifreeze and Insulation Project
The extreme low temperature in the Shenyang Hunnan Avenue Expressway Tunnel in winter can reach minus 30.6°C, and the average temperature is around -10°C. The electric heating tape system for tunnel firefighting pipes provided by Huanrui is to directly lay or wrap the electric heating tape closely to the surface of the firefighting pipe to supplement the heat loss, and adjust the water temperature at each control point of the pipeline system along its own length. , to maintain the water temperature within the required temperature range, thereby achieving the purpose of preventing pipes from freezing. The Huanrui electric heating system has been successfully applied to the pipe insulation in the tunnel. Through the continuous heating of the system, the normal operation of the water supply pipeline in the tunnel is ensured and the water supply interruption caused by low temperature in winter is prevented. In addition, the system's automatic adjustment function effectively reduces energy consumption and improves economic benefits.

Queershan Tunnel Pipeline Electric Heat Tracing Insulation Project

The main peak of Que'er Mountain is 6,168 meters above sea level. It is covered with snow for up to 8 months every year. The mountain is high and the road is dangerous, and it is cold and hypoxic. The Queershan Tunnel is a highway passage in Dege County, Garze Tibetan Autonomous Prefecture, Sichuan Province. It is located at the foot of the Queershan Mountains. It is a key project in China's "Twelfth Five-Year Plan". Due to the influence of extremely bad weather, ordinary electric heating tapes simply cannot meet the insulation requirements of tunnel pipes. To this end, Huanrui has proposed a safe and reliable building heating system solution, which has the characteristics of controllable temperature, stable heating power, and long service life. Huanrui building electric heating system is safe and reliable. The surface of the delivery pipe and the heat tracing pipe is not charged, and it only provides the required heat for the delivery pipe, so that there is almost no change in the temperature of the pipe. The application of Huanrui electric heating system here provides stable temperature guarantee for key pipelines. Especially in extremely cold weather conditions, the electric heating system effectively prevents icing and improves traffic safety and efficiency.

Taihangshan Tunnel Pipeline Electric Heat Tracing Insulation Project

Taihang Mountain has a warm temperate semi-humid continental monsoon climate, with long winters and short summers. The low temperature is around -10°C. The Taihang Mountain Tunnel is located on the Xiyu Expressway in a cold mountainous area. It does not see sunlight all year round. It is dark and humid inside and has harsh environmental conditions. Due to the low temperature in the tunnel, water in the drainage ditch can easily form ice and the ice surface will continue to rise. When it rises to the road surface, it will increase the difficulty of vehicle driving and cause safety hazards. Huanrui uses the RDC type ultra-long heating cable for anti-freeze insulation of pipelines and drainage ditches. The application of Huanrui electric heating system in this tunnel ensures the normal operation of the equipment in the tunnel, especially in severe cold weather in winter. The stability of the thermal system allows traffic in the tunnel to flow smoothly and ensures safety.


The successful application of Huanrui Electric Heat Tracing System in the field of tunnel pipeline insulation proves the product's stability and wide range of applications. The actual implementation of the three projects of Shenyang Hunnan Avenue Expressway Tunnel, Taihangshan Tunnel and Queershan Tunnel has fully demonstrated the advantages of this system in ensuring pipeline safety, extending service life and reducing maintenance costs. In the future, with the continuous development of technology, Huanrui Electric Heat Tracing System will play an important role in more tunnel projects, providing strong guarantee for tunnel construction and operation.