Analysis of the Causes of Insufficient Suction in Explosion-Proof Axial Flow Fans

Analysis of the Causes of Insufficient Suction in Explosion-Proof Axial Flow Fans

Explosion-proof axial flow fans are widely used to improve our living and working environments, ensure the quality of these environments and facilities, and guarantee optimal performance. So, what are the reasons for insufficient suction in explosion-proof axial flow fans? Reasons for Insufficient Suction in Explosion-Proof Axial Flow Fans: Explosion-proof axial flow fans are indispensable components in desulfurization and dust removal systems, but issues with insufficient suction frequently occur. These problems are primarily caused by dust accumulation in ducts and desulfurization towers, which increases resistance in the ducts and system and leads to poor flue gas circulation. In other cases, the suction capacity of the explosion-proof axial flow fan may be insufficient due to air leaks. For example, air leaks in ducts and duct joints, leaks in boilers and desulfurization towers, and other sources of air leakage. The suction capacity of an explosion-proof axial flow fan may be insufficient. When an explosion-proof axial flow fan is not properly selected, the incorrect selection may not be apparent during initial operation of a new unit, but the problem will become evident over time. Therefore, when selecting an explosion-proof axial flow fan, it is essential to ensure adequate clearance and guarantee long-term, - Long-term stable operation. Output Frequency Analysis of Explosion-Proof Axial Flow Fans Prices vary depending on the type of explosion-proof axial flow fan. Typically, the output frequency of explosion-proof axial flow fans ranges from 0.1 to 400 Hz. To adjust the speed within a range below the rated speed, the output frequency is set to 50 Hz or 60 Hz. Currently, the power supply frequency for standard household motors is 50 Hz, and the operating speed is the rated speed. In principle, if the motor’s supply frequency exceeds 50 Hz, the operating speed may exceed the rated speed. When operating outside the fixed speed range, two points require attention: First, in the output range above 50 or 60 Hz, the output voltage of the explosion-proof axial flow fan remains constant. This is a fixed power output characteristic. Therefore, operating in the high-speed range will result in a decrease in speed. Second, the operating speed in the high-speed range must not exceed the motor’s maximum speed. Exceeding this limit will shorten the motor’s service life and may even damage the motor. Output frequency also encompasses output frequency accuracy and resolution. Based on the manufacturing process requirements of the variable-frequency speed control system, select an explosion-proof axial fan that meets these conditions and employ the appropriate control methods.