Fan silencerOverview
The induced draft fan muffler is mainly suitable for reducing the intake and exhaust noise of Roots series and axial flow series fans. The blower fan muffler can also be used for noise reduction of exhaust pipes and other high-pressure fans15-30dB（A）The pressure loss is less than500Pa.

1、 The purpose of the fan
GTheY6-41The centrifugal drum and induced draft fan of the boiler are designed to adapt to industrial boilers that burn various types of coal and are equipped with dust and smoke elimination devices, with a total pressure efficiency higher than80%The new series of low-noise boiler drums and induced draft fans can be selected for those with similar inlet conditions and suitable performance.
2、 Characteristics of the fan
GTheY6-41The series centrifugal fan is a replacement product for boiler drum and induced draft fan.
GTheY6-41The design method used for the series of fans includes selecting appropriate fan types, reasonable fan operating parameters, optimizing flow patterns, organizing air sources reasonably, carefully designing blade shapes, increasing tongue clearance, appropriately reducing fan speed, improving volute design, purifying incoming flow, and minimizing secondary flow losses. In addition, the finite difference method is used to numerically calculate the inlet and impeller cover profiles, and the uniformity of the flow field at the inlet of the fan impeller is used as the optimization criterion for the inlet optimization design. Combine the above methods with existing optimization design methods for fan impellers, volutes, etc. to create an integrated optimization design program for impellers, volutes, and air inlets, with lower specific noise levels and smaller fan sizes.

purpose

Fans are generally used for forging furnaces and high-pressure forced ventilation,And it can be widely used for conveying materials, conveying air to gases that are non corrosive, non self igniting, and do not contain viscous substances. The temperature of the medium generally does not exceed50℃ (not exceeding80℃), the dust and hard fine particles contained in the medium shall not exceed150mg/m3.

Performance and selection of fans

The performance of a fan is represented by parameters such as flow rate, total pressure, spindle speed, and shaft power. Select the performance given in the curve and performance table. Performance of the air supply fan:t=20℃, atmospheric pressurePa=101325PaGas densityρ＝1.2Kg/m³Calculation of air medium.

The performance in both the selection curve and the performance table refers to adjusting the blades to fully open0Performance at ℃. Please refer to the performance chart when placing an order. The deviation of the full pressure value in the performance test of the fan shall not exceed the design full pressure value5%.

If the operating conditions of the fan do not match the above, the performance should be converted according to the relevant formula.

Handling of excessive or insufficient traffic. During use, excessive or insufficient flow often occurs, and there are many reasons for this phenomenon. If the flow rate fluctuates during use, it is mainly due to the varying resistance in the pipeline network. If it gradually decreases over a long period of time during use, it is mainly due to pipeline blockage.

The main reasons for excessive or insufficient flow during formal operation of the fan after installation are as follows:

1The actual resistance value of the pipeline network differs significantly from the calculated value.

According to the general pipeline characteristic equation:P=Kq²In the formulaK—Resistance coefficient.

As actual valueKLess than the calculated valueKWhen the flow rate increases, if the actual value isKGreater than the calculated valueKThe flow rate decreases.

2When selecting, the difference in the total pressure value of the fan itself was not consideredδPWhen the actual total pressure of the fan deviates positively, the flow rate increases; When the deviation is negative, the flow rate decreases. Consultation Hotline: