• Durability: Vinylester resin, UV protection, extended service life.
• Customizable: Computer strain analysis, G2.5 balance, low vibration risk.
• Easy Maintenance: Oil bath bearings, heat/corrosion resistant, cost-effective.
• Professional Team: Expert wind turbine guidance.
• High aerodynamic efficiency, low noise, corrosion resistance.
• Medium temp range: -20℃ to 80℃, ≤ humidity, ≤ 100mg/m3 dust content.
• Durable Fiberglass Build: Ensures long-lasting performance.
• Ethylene-based fiberglass blades optimize airflow.

Application

The Y6-52 type boiler centrifugal induced draft fan is designed to adapt to the burning of various coal qualities and is equipped with a smoke and exhaust device. It can be used with 1~20 industrial overpressure (180℃). Any parts with equivalent performance can be selected, but the maximum temperature shall not exceed 200℃ (No.8 and above shall not exceed 180℃).
 

Form

1.  
2. 1.The induced draft machine is single suction, and there are 6 types of machine numbers (No.): 3.55, 4.5, 6.3, 8, 9, and 11.2.
3. 2. Induced draft fans can be made into right-hand or left-hand types. Looking at the fan from one end of the transmission unit, if the impeller rotates clockwise, it is called a right-hand fan and is represented by "right"; if it rotates counterclockwise, it is a left-hand fan and is represented by "left".
4. 3. The air outlet position of the fan is indicated by the air outlet angle of the casing. Both right-hand and left-hand fans can be made into 3 angles: 0°, 90°, and 180°.

Structural Characteristics

1. 1. The impeller has 16 backward inclined flat blades, made of Q345 (16Mn), welded between the arc-conical front disc and the flat rear disc. It has been calibrated for static and dynamic balance. Therefore, it runs smoothly, has high strength, and wear resistance, and has a long service life.
2. 2. The casing is welded with steel plates into an integral volute shape, which is common to right-hand and left-hand rotating fans from No. 8 onwards.
3. 3. Transmission part. The main shaft is made of high-quality steel and uses ball bearings. Two parallel bearing seats are lubricated with No. 2 calcium-sodium based grease, and the fan blades are self-cooled, with a simple structure.
4. 4. The convergent-divergent air inlet is made into an integral structure and fixed to the inlet side of the casing with bolts.
5. 5. The regulating door is used to adjust the flow of the fan. The regulating door is axially installed in front of the air inlet. Due to the use of an external transmission structure, it is flexible and convenient to rotate. The adjustment range is from 90° (fully closed) to 0° (fully open). The position of the lever of the regulating door, from the direction of the air inlet, for a clockwise rotating fan, the lever turns counterclockwise from fully closed to fully open; for a counterclockwise rotating fan, the lever turns clockwise from fully closed to fully open. In order for the various parts of the regulating door to work properly, they must be well lubricated. Because the gas temperature of the induced draft fan is relatively high, the grease uses high-temperature (260℃) bentonite grease, which can still ensure lubrication during high-temperature operation.

Performance and Selection

1. The design and use units shall select the machine number, specific performance, and matching motor of the induced draft fan from the performance and optional parts table according to the selected flow rate and total pressure.
2. The performance of each speed in the performance and options table is obtained by dividing the performance within the range of 90% of the maximum efficiency into 8 performance points according to the flow rate.
3. The factory inspection performance of the fan is that the deviation of the total pressure value at the required flow rate does not exceed ±5% of the designed total pressure value.
4. In the performance and optional parts table, No.3.55~No.6.3 are calculated based on the flue gas medium when the gas temperature is t=200℃, the atmospheric pressure is Pa=101.325kPa, and the gas density is ρ=0.745kg/m³. No.8 and above are calculated based on the flue gas medium when the gas temperature is t=180℃, the atmospheric pressure is Pa = 101.325kPa, and the gas density is ρ =0.775kg/m³. The performance of fans with regulating doors refers to the fan performance when the regulating door blades are fully open (0°). If the fan operating conditions do not meet the above, the performance should be converted according to the relevant formula.