How to use the anti-freezing electric tracing band for high-speed long fire hose

High-speed long fire hoses are prone to freezing and blocking in winter due to long laying distances, outdoor exposure, and significant impacts from low temperature environments, which can lead to failure in normal water supply during emergencies, resulting in serious consequences. Electric heat tracing bands are an efficient solution to this problem. Mastering the scientific use method can ensure that fire hoses remain unobstructed all day long in winter, strengthening the safety defense line for high-speed fire protection.

Accurate model selection and adaptation to high-speed special working conditions are prerequisites. High-speed fire hoses are often laid over long distances in the open air, requiring the use of weather-resistant, UV-resistant, and corrosion-resistant electric heat tracing bands. For ordinary low-temperature areas (-10°C to 0°C), a 20-30W/m self-regulating model is selected to maintain a temperature of 5-10°C inside the hose; for extreme low-temperature (≤-20°C) road sections, an enhanced low-temperature resistant heat tracing band is chosen to prevent power attenuation. Additionally, products with a waterproof rating of IP67 or higher must be selected, paired with explosion-proof junction boxes, to adapt to the complex outdoor environment of highways.

Scientific laying ensures uniformity of long-distance antifreeze protection. The straight sections of long fire hoses are laid in parallel, with a spacing controlled at 30-40cm, and are fixed with stainless steel cable ties to ensure tight contact with the pipeline and enhance thermal conductivity efficiency. Key parts with fast heat dissipation, such as valves, elbows, connectors, and fire hydrants, are densely laid using spiral winding, with the winding spacing reduced to within 15cm, to compensate for heat loss. An intermediate junction box is set up every 80-100m for sub-circuit control, avoiding the impact of single-circuit failure on overall antifreeze protection, and a 6%-8% length redundancy is reserved to cope with pipeline deformation.

The supporting system optimizes temperature control and safety protection. Equipped with an intelligent zoned temperature control system, each circuit is equipped with an independent thermostat and PT100 sensor to monitor the temperature of the pipeline in real time. It automatically starts when the temperature falls below a preset threshold and stops when it reaches the standard. Long-distance operation can save more than 40% of energy. The distribution box is equipped with a built-in leakage protector and overload protector. The outdoor model must have waterproof, dustproof, and corrosion-resistant functions to prevent rain and snow from entering. The insulation layer uses 50-80mm thick flame-retardant insulation cotton, with seams sealed with aluminum foil tape, and the outer layer wrapped with waterproof protective cloth, reducing heat loss in two ways.

Standardize installation and operation and maintenance to extend service life. Before construction, clean the oil and rust on the surface of the pipeline, avoid sharp protrusions, and prevent scratching the outer sheath of the heat tracing system; ensure proper sealing during wiring, tighten bolts evenly, and prevent moisture infiltration. Conduct routine monthly inspections of the sealing status of the heat tracing system's sheath and accessories, and retest insulation resistance quarterly; before winter arrives, conduct a comprehensive inspection of the temperature control system and insulation layer, repair damaged parts in a timely manner, clear the snow around the pipeline after heavy snowfall, and ensure normal heat dissipation.

The core of using electric heat tracing bands for high-speed long fire hoses lies in "proper selection and adaptation, scientific laying, intelligent temperature control, and regular operation and maintenance". Strictly following these methods can effectively prevent freezing and blockage due to low temperatures, ensuring the normal operation of fire hoses in emergencies and providing reliable protection for fire safety on highways during winter.