(1) "Inflatable Air Blower" design reasons: fan blower design are generally based on use of the environment, temperature, wind, air pressure, media, etc. to design, and some companies do not solely on the basis of these factors to the selection, resulting in resulting in the presence of the following factors: improper fan design, poor dynamic characteristics, vibration running; structure is irrational, stress concentration; the design speed close or fall into the critical speed zone; Calculation of thermal expansion are not allowed, resulting in hot and poor alignment.
(2) "Inflatable Air Blower" manufacturing reasons: Fan manufacturer quality requirements also affect the blower fan operation, such as: poor parts manufacturing, precision is not enough; poor parts material, strong enough, manufacturing defects; rotor balancing is not meet the technical requirements.
(3) the installation, maintenance Cause: Fan mounting accuracy requirements of the fan operation plays a vital role, as mounting accuracy does not meet the installation requirements, the fan is running will play a disruptive role. In the wind turbine installation process, there are factors such as: improper mechanical installation, spare parts dislocation, preload large; poor shaft alignment; machine geometric parameters (such as with the gap, the amount of interference and relative position) improperly adjusted; Rotor long-term placement improperly changed the dynamic balance precision; failure to overhaul rules, undermining the original machine with the nature and accuracy.
(4) Operation Run Cause: In the course of the fan, the fan maintenance, maintenance of good or bad, on the quality of the fan running plays a decisive role. Such as: the process parameters (such as temperature medium, pressure, flow, load, etc.) deviate from the design value, the machine operation condition is not normal; the machine super speed, overload operation, the change in the operating characteristics of the machine; poor lubrication or cooling; Rotor partial damage or fouling; improper start or stop the lift speed operation, thermal expansion uneven or too critical zone residence time waiting.
(5) "Inflatable Air Blower" machine deterioration Cause: Usually apparatus is in use has a certain number of years, up to a certain number of years the device performance will deteriorate. For fans concerned, too, such as: long-term operation, the rotor deflection increases or balancing deterioration; rotor local damage, loss or cracks; parts wear, pitting or corrosion; mating surface by the force of the deterioration, produced a lack of interference or loosening, damage to nature and the accuracy of the fit; uneven foundation settlement machinery, machine housing deformation.