1000D

1. Emergency shutdown: During the trial operation of the unit, if any of the following situations occur, the emergency shutdown should be immediately carried out. The operation of emergency shutdown is to press the main motor stop button and then carry out the follow-up work after shutdown.
a、 The centrifugal fan suddenly experienced strong vibration and has exceeded the trip value.
b、 There are scraping or abnormal friction sounds inside the body.
c、 Smoking occurs at any bearing or seal, or the temperature of a certain bearing rises sharply to a certain value.
d、 When the oil pressure value cannot be restored to normal.
e、 The fuel tank level is low and there has been a suction phenomenon.

The distinction between good and bad centrifugal fans mainly depends on whether the performance of the centrifugal fan meets the nominal air pressure and volume. Only when the air pressure meets the nominal volume can the actual system's required pumping air volume be achieved. Is the noise generated during the operation of a centrifugal fan too loud? Noise is also an environmental pollution that not only affects work and life, but also brings other impacts to people around it, while also consuming energy. The centrifugal fan is energy-saving, and low efficiency consumes electricity, so the low efficiency of the centrifugal fan is also particularly important. Another point is that the higher the vibration value of the bearing part of the centrifugal fan, the more likely the fan bearing is to be damaged, and the lower the vibration value, the longer the bearing life. Therefore, when selecting, attention should also be paid to the vibration value of the centrifugal fan.

We are familiar with high-pressure fans and high-pressure blowers, and we also understand their differences. But what about high-pressure? What are the differences between it and high-pressure fans? This question is easy to answer, just learn more about high-pressure centrifugal fans and compare them.
High pressure centrifugal fan is also a device that converts kinetic energy into potential energy. It uses a high-speed rotating impeller to act on gas and complete the entire operation process. Compared with high-pressure fans, there is a difference in the structure, which is the difference in the impeller of the fan. We all know that high-pressure fans use annular impellers, while high-pressure centrifugal fans are the impellers of centrifugal fans.
Secondly, there is also a difference in pressure between the two. It is obvious that the pressure of a high-pressure fan is much higher than that of a high-pressure centrifugal fan, but the flow rate of a high-pressure centrifugal fan is much larger than that of a high-pressure fan, which is a very special feature. The difference lies in the practical application. As high-pressure fans cannot pass materials through the fan, they are only suitable for gas transportation in various industries; However, high-pressure centrifugal fans can handle materials, so they can be used for ventilation, dust removal, and other purposes.

A centrifugal fan is a device with a complex structure, mainly composed of an air inlet, an air valve, an impeller, a motor, and an air outlet. The effect of centrifugal fans varies in different states. Therefore, the operating conditions of different parts are not uniform, which will affect the effectiveness of the centrifugal fan. Debugging the centrifugal fan to the desired state can be approached from multiple aspects.
1. Centrifugal fans allow full pressure starting or voltage reduction electric, but it should be noted that the current during full pressure starting is about 5-7 times the rated current, and the voltage reduction starting torque is proportional to the square of the voltage. When the grid capacity is insufficient, voltage reduction starting should be used.