The following is a detailed introduction to the damping and vibration isolation methods of the fan:
(1) The natural frequency of the system uses the metal screw butterfly valve as the vibration isolation element. When the natural frequency is 2.4Hz and the speed is 600r/min, the vibration isolation efficiency is more than 90%.
(2) The fan unit is allowed to vibrate. To ensure the normal operation and service life of the fan unit, the vibration of the fan unit after vibration isolation shall be controlled within 10mm/s.
(3) Additional mass blocks. The additional mass is an important condition to ensure that the vibration of the fan unit itself reaches the above indicators. The mass disk of the public base of the fan vibration isolation system is designed to be about 3 times the mass of the unit.
(4) The structural type of the vibration isolation system has the advantage of reducing the center of gravity of the unit, improving the bearing surface of the vibration isolator, which is conducive to the stability of the unit. The public base, namely the vibration isolation platform, uses a mixed structure of concrete and steel, which makes the device and conditioning easier.
Damping (damping butterfly valve damper) can extend the service life of metal structure in vibration environment. In addition, after the support installation of electronic instruments or the constraint damping treatment of circuit boards, the Q value and resonance peak value of the system can be significantly reduced, and the vibration energy can be weakened, improving the service life of electronic instruments.