Zibo Mingbo Tunnel Special Axial Flow Fan Escorts Ventilation Safety in Long Tunnels

With the continuous expansion of the construction scale of highways and railway tunnels in China, the safety and economy of tunnel ventilation systems are increasingly valued. The tunnel specific axial flow fan independently developed by Zibo Mingbo Fan Co., Ltd. is providing reliable ventilation guarantee for many large tunnel projects with excellent performance.

Data shows that the operating efficiency of the Mingbo Tunnel specific axial flow fan can reach 80% to 85%, far exceeding the efficiency level of about 70% commonly found in ordinary fans on the market. For long tunnels over 3000 meters, this series of fans can ensure stable and compliant end wind speed, effectively dilute harmful gases such as carbon monoxide and nitrogen oxides, and effectively ensure construction and passage safety. Among them, the BT35 explosion-proof tunnel axial flow fan is equipped with a triple explosion-proof structure, using wear-resistant and anti-corrosion coatings. The equipment replacement cycle is twice as long as ordinary products, and can easily cope with complex tunnel conditions such as high humidity, dust, and flammability and explosiveness.

In terms of performance reliability, the Mingbo Tunnel fan cylinder is made of thickened sheet metal and equipped with an IP55 protective motor, which can operate continuously and stably for 100000 hours, with a 60% reduction in failure frequency compared to ordinary fans; The equipment undergoes a full set of performance testing before leaving the factory, and the error of air volume and pressure is controlled within ± 2%. Previously, in a 3200 meter bidirectional highway tunnel project on a certain highway in Shandong, the Mingbo fan system passed the fire and environmental impact assessment acceptance in one go, reducing the dust concentration in the tunnel by 60% and achieving comprehensive compliance with harmful gas indicators, receiving high praise from the owner unit.