High-temperature Axial Flow Fan

On the air-cooled islands of large thermal power plants, beside annular coolers in metallurgical enterprises, atop cooling towers in chemical plants - what is needed is not high-pressure gas conveyance but pushing large volumes of high-temperature air directly along the axial direction across heat dissipation surfaces to carry away heat. In such scenarios, centrifugal high-temperature fans are bulky and inconvenient to install, while our factory's High-temperature axial flow fan, with its compact structure, direct airflow direction, and high efficiency, becomes the preferred equipment for achieving high-airflow straight-through ventilation in high-temperature environments - especially suitable for scenarios requiring large-area heat exchange with low system resistance.

The design challenge of the High-temperature axial flow fan lies in maintaining impeller material strength at high temperatures, rotor system thermal alignment, and effective thermal insulation and cooling of motors and bearings. Impellers must be cast or welded from heat-resistant aluminum alloy (such as ZL401) or heat-resistant stainless steel, ensuring blade profiles do not deform and strength does not decay at high temperatures. For direct-drive fans, the motor is the protection focus - must use dedicated high-temperature motors with special insulation materials (Class F or H), possibly equipped with independent cooling air paths or cooling coils, ensuring motor winding temperature does not exceed insulation grade allowable values in high-temperature environments. For long-shaft drive type, effective thermal insulation sections must be designed to prevent heat conduction along the shaft to the drive-end ordinary motor and bearings. All fasteners adopt materials with matched thermal expansion coefficients to prevent thermal loosening. Dynamic balancing must be performed at simulated operating temperatures or with thermal compensation calculations. Every High-temperature axial flow fan from our factory undergoes high-temperature environment simulation testing and vibration detection before shipping, ensuring stable operation at actual high-temperature conditions. On the air-cooled island of a large combined-cycle gas-steam power plant, dozens of giant high-temperature axial flow fans (diameters up to 10m+) are installed in rows, driving ambient air at high speed across condenser fin tube bundles to carry away heat. The fans must withstand summer ambient temperatures as high as 50–60°C plus heat transferred from the tube bundles. Their specially made heat-resistant aluminum alloy blades and high-temperature-optimized external rotor motors ensure full-load reliable operation even in the hottest season - this is the core value of High-temperature axial flow fans in large heat dissipation systems.

• Air-cooled island heat dissipation fans in thermal power plants
• Annular cooler and sinter machine cooling fans in the metallurgical industry
• Cooling tower and air cooler matching fans in the chemical industry
• Grate cooler cooling fans in the cement industry
• Hot air circulation in large heat treatment furnaces
• Ventilation in high-temperature environments such as tunnels and underground structures

High-temperature axial flow fans can be customized based on customer heat dissipation system parameters. Impeller diameters from 300mm to 3,000mm customizable as needed; blade angles can be fixed or adjustable. Motors can be internal direct-drive or external long-shaft drive, with insulation grade Class F or H, and independent cooling systems available. Cylinders can be flanged or fixed, with rain caps and insect screens configurable. Variable-frequency speed control systems can be configured to automatically adjust airflow based on ambient temperature. MOQ is one unit; customization lead time is 10–15 working days, with large projects negotiable.

Large high-temperature axial flow fans are bulky, using split packaging. Impellers, cylinders, and motors are separately wrapped in stretch film and rainproof cloth; flange surfaces are coated with rust-preventive oil and fitted with covers; blades are fitted with corner protectors to prevent collision. Large impellers are secured on dedicated brackets inside wooden crates to prevent deformation during transport. Accessories include conformity certificate, user manual, and installation bolts, sealed in waterproof bags. Exterior markings include product name/model, impeller diameter, crate number, weight, dimensions, and handling symbols. We support EXW delivery or transport to ports; for export, we can provide customs assistance. Large equipment can be arranged for dedicated vehicle transport.

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