Energy-Efficient Centrifugal Fan Series | XFGL-WY and XFYL-WY Series Centrifugal Fans

01 

Application       XFGL-WY and XFYL-WY type supply and induced draft fans are suitable for 2 to 670 t/h supply and induced draft systems in thermal power plants, and also meet the high-pressure head performance parameters required for fluidized beds. This series of fans can also be used for dust removal, mine ventilation, and general ventilation systems. Supply fans convey air, while exhaust fans handle flue gas or particulate-laden gases. With particulate concentrations below 200 mg/m³, service life exceeds 4 years. Operation with higher concentrations is possible but will shorten the service life. Maximum operating temperature for supply fans must not exceed 250°C.

02 

Structure and Performance      

    The ventilators and exhaust fans are designed as single-inlet types. Sizes range from No. 8 to No. 29.5, with 20 sizes each, totaling 40 specifications. Each fan type can be manufactured in either left-hand or right-hand rotation. The fan outlet position is indicated by the outlet angle of the casing. The fan employs a D-type drive configuration (cantilever structure), with the motor connected to the fan via an elastic coupling for direct drive transmission. This series incorporates advanced technologies including high-strength wear-resistant impellers, oil-leak-proof bearing housings, and articulated axial adjustment dampers. The fans offer a wide range of high-efficiency operating conditions with closely spaced sizes, facilitating easy selection of the optimal efficiency point. They feature an adjustable inlet. The impeller employs backward-curved single-plate blades, reducing airflow impact for enhanced stability, minimizing motor overload, and significantly extending service life. An overlapping oil-throwing ring ensures leak-free operation and excellent dust resistance. The guide vane pivot points and adjustment rods are equipped with spherical bearings, eliminating "dead spots" during operation and adjustment. This ensures flexible, effortless, safe, and reliable adjustment while preventing overloading of the actuator. The fan is available in either integrated or split-assembly configurations. Featuring a cantilevered structure for flexible layout, it employs direct motor coupling for uniform torque transmission, reduced vibration, and reliable operation. Installation and maintenance are convenient.     

03 

Performance and Selection  

      Fan performance is characterized by parameters including airflow, total pressure, shaft speed, shaft power, and efficiency. Performance curves and tables are calculated for air medium at gas temperature t = 20°C, atmospheric pressure p0 = 101325 Pa, and gas density p = 1.2 kg/m³. Induced draft fans are calculated for air medium at gas temperature t = 200°C, atmospheric pressure p0 = 101325 Pa, and gas density p0 = 0.745 kg/m³. Performance curves and values in performance tables indicate performance with control blades fully open at 0°. Performance specifications in the table shall prevail for ordering. The deviation of the fan's full-pressure test value shall not exceed ±5% of the design full-pressure value. The selected motor power shall generally not be lower than the required power value. Dimensionless performance values in the table shall be converted to dimensional performance values using relevant formulas.     When starting formal operation after new installation, or when excessive or insufficient flow occurs during use, employ the following methods to correct: Adjust flow by opening/closing the regulating damper; Modify flow by increasing/decreasing fan speed; Alter flow by replacing with a new fan of higher or lower pressure rating; Change flow by adjusting the pipeline network resistance coefficient K.     If flow remains insufficient even with the regulating damper fully open, consider modifying the piping network to reduce the resistance coefficient K and increase flow. Alternatively, increase fan speed or replace with a higher-pressure fan, ensuring the speed does not exceed the maximum value specified in the performance table.

04

XFGL-WY Fan Specifications

05

XFYL-WY Fan Parameters