Performance adjustment of shredder fan

The performance adjustment of shredder fan will be summarized by Xiaobian. If the relative flow change is small (or the regulation depth is small), the power consumption difference between several regulation modes is small. In other words, the regulation mode has little impact on the energy-saving effect. Even if it does not save energy, more electric energy will be consumed due to the existence of the regulation device. Generally speaking, the greater the adjustment depth, the more significant the energy-saving effect. Therefore, we should carefully choose the regulation mode in order to obtain more ideal benefits. The rotating noise is caused by the blades evenly distributed on the working wheel hitting the surrounding gas medium, resulting in the pressure pulsation of the surrounding gas. In addition, when air flows through the blade, a boundary layer will be formed on the blade surface, especially on the suction side, which is easy to thicken and produce many vortices. At the trailing edge of the blade, the boundary layer between the suction edge and the pressure edge forms the so-called wake region. In the wake region, the flow pressure and velocity are much lower than those in the mainstream region. Therefore, when the working wheel rotates, the air flow in the blade outlet area is very uneven.

For the pulverizer fan and compressor, the power consumed by the outlet throttling regulation mode. Although the relative flow QR (the ratio of actual flow Q to design flow Q0) decreases, the power also decreases accordingly. For example, when q = 0.65q0, the corresponding power is reduced to about 80%, but compared with other regulation methods, the energy consumption is still in the first place. In order to ensure the safe operation of the pulverizer fan, it is not allowed to bear external loads such as pipes, valves and racks. Check the centering and alignment quality of fan and motor. Check whether the periphery of the unit base is fully padded and whether the anchor bolts are fastened. The above is about the performance adjustment of the pulverizer fan.