How to prevent vibration and reduce noise in the installation and construction of cold storages?

2024-09-05

In practical applications, it is not uncommon to encounter the phenomenon that the noise generated by screw refrigeration compressors in cold storage construction exceeds the normal standard. Next, as for effective measures for vibration and noise reduction, although from the research on noise and vibration of screw refrigeration compressors in cold storage construction at home and abroad, there is very little research on noise source identification, noise and vibration distribution, noise and vibration characteristics, and noise and vibration control. At present, a complete research idea and R & D system has not been formed in China. Usually, the key to identifying vibration and noise sources is to use a noise testing system, so as to adopt vibration and noise reduction measures. However, the following measures can also help us understand and solve problems as a whole to a great extent.

How can we prevent vibration and reduce noise in cold storage construction?

Use on-site dynamic balancing method of cold storage construction compressors to reduce power frequency vibration.
Correct the coaxiality of the motor shaft and the compressor main shaft to reduce vibration.
Replace flexible couplings of different forms to reduce the noise of cold storage construction.
Fasten parts and components, improve installation gaps, reduce bearing vibration, and reduce machine noise.
The imported screw refrigeration compressor for cold storage construction in an oil field is in poor working condition and has defects.
Regarding the abnormal operation sound among them, it is judged that the main reasons are loose fastening bolts of the compressor, poor alignment of the coupling between the compressor and the motor, and poor rotor operation.
By checking and tightening the fastening bolts to reach the specified value, adjusting the alignment of the coupling, replacing worn parts, and adjusting various installation gaps within the specified value range, the operation sound of cold storage construction is normal.