Dynamic Balancing Modal Analysis and Vibration Suppressing Design for Reciprocating Compressor Crankshaft

Abstract:

The purpose of this study is to improve the problem of vibration which occurs in a running reciprocating compressor, by determining an optimal crankshaft counterweight and narrowing the movement trajectory of the crankshaft connecting rod mechanism. An analytical solution method is applied to satisfy the requirements for vibration reduction. Use of finite element software is to simulate the modality and deformation of crankshaft under various conditions of counterweight. Modal testing shows a difference of less than 6 % between the simulation and the experimental results. After the crankshaft counterweight is machined and installed, the new crankshaft is able to reduce compressor vibrations from 32 mm/s down to 15.8 mm/s and noise reduction of 3 dB. This study can provide information pertaining to the design process and assessment to any future new compressor designs.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 996-999
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.996
• Online since: February 2012
• Authors: Yi Cheng Huang, Fong You Lee
• Keywords: Dynamic Balancing, Reciprocating Compressor Crankshaft, Vibration Suppressing

References

[1] AIR 575: Method of measuring machinery sound within an equipment space, (1994).

[2] ANSI/ARI 530: Rating of Sound and Vibration for Refrigerant Compressor, (2005).

[3] ISO 10816-3: Mechanical vibration – Evaluation of machine vibration by measurements on non-rotating parts – Part 3: Industrial machines with nominal power above 15 kW and nominal speeds between 120 r/min and 15, 000 r/min when measured in situ, (1998).

DOI: 10.3403/30190720