Hydraulic Unbalance in Oil Injected Twin Rotary Screw Compressor Vibration Analysis (A Case History Related to Iran Oil Industries)
Authors: Omid A. Zargar
Vibration analysis of screw compressors is one of the most challenging cases in preventive maintenance. This kind of equipment considered as vibration bad actor facilities in industrial plants. On line condition monitoring systems developed too much in recent years. The high frequency vibration of ball bearings, gears, male and female caused complex fast Fourier transform (FFT) and time wave form (TWF) in screw compressors. The male and female randomly are sent to balance shop for balancing operation. This kind of operation usually caused some bending in rotors during the process that could cause further machining in such equipment. This kind of machining operation increased the vibration analysis complexity beside some process characteristic abnormality like inlet and out let pressure and temperature. In this paper mechanical principal and different type of screw compressors explained. Besides, some new condition monitoring systems and techniques for screw compressors discussed. Finally, one of the common behavior of oil injected twin rotary screw compressors called hydraulic unbalance that usually occurred after machining operation of male or female and have some specific characteristics in FFT and TWF discussed in details through a case history related to Iran oil industries.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1091132Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF
 Huang F. 2000. Oil-Free Screw Compressor or Oil-Injected Screw Compressor. International Compressor Engineering Conference Purdue University School of Mechanical Engineering, 16: 1476.
 Pillis J.W. 1998. Basics of Operation, Application and Troubleshooting of Screw Compressors. 14: 1-7.
 Ali Zargar O.2014. Turbine Compressor Vibration Analysis and Rotor movement Evaluation by Shaft Center Line Method (The Case History Related to Main Turbine Compressor of an Olefin Plant in Iran Oil Industries). Middle-East Journal of Scientific Research, 19: 390-400.
 Alsaade F., Zaman N., Abdullah A. and Zafar Dawood M. 2012. Enhancing Surveillance and Security of Oil Pipelines Transportation Using Wireless Sensor Network. Middle-East Journal of Scientific Research, 11:1034-1035.
 PRÜFTECHNIK website: www.pruftechnik.com.2013.
 BMG products brochures. http://www.bmgworld.net/Page_Files/file/ BMG-TECH27012010.pdf.
 TIMKEN products brochures. http://www.timken.com/en-us/products/ maintdiag/reliability/products/HandheldDevices/Documents/10193_BT_userguide_03_08.pdf.
 Vibration school website (2013); http://www.vibrationschool.com.
 I learn vibration-training website.2013. http://www.mobiusinstitute.com.
 Brüel & Kjær website (2013); http://www.bksv.com.
 Howes B.C.2001. A Gearbox Vibration - Fact or Fiction. Beta Machinery Analysis Ltd. Calgary AB, Canada, T3C 0J7.
 Shafei A.E.2005.Gearbox Fault Diagnosis. Managing Director, RITEC Cairo, Egypt.
 Diwakar G. Satyanarayana M.R.S and Kumar P.R.2012. Detection of Gear Fault Using Vibration Analysis. International Journal of Emerging Technology and Advanced Engineering.2 (9):123-137.
 Ali Zargar O.2013. Vibration Analysis of an Alstom Typhoon Gas Turbine Power Plant Related to Iran Oil Industry. World Academy of Science, Engineering and Technology. International Journal of Mechanical, Industrial Science and Engineering Vol: 7 No: 11.
 Ali Zargar O.2013. Different Aspects of Gas Turbine Siemens 162MWV94.2 Vibration Analysis. Middle-East Journal of Scientific Research, 18: 546-556.
 Ali Zargar O.2013. Vibration and Operation Technical Consideration before Field Balance of Gas Turbine Utilities (In Iran Power Plants SIEMENS V94.2 Gas Turbines).World Academy of Science, Engineering and Technology. International Journal of Mechanical, Industrial Science and Engineering Vol: 7 No: 11.
 Nuawi M.Z., Muhamad T.I., Hussin M.F.H., Abdullah S. and zulkifli R. 2010. Preliminary Study of Condition Based Monitoring on Automotive Gearbox Using Ultrasonic Signal. World Applied Sciences Journal, 9: 118-119.
 Sukirn O., Fajar R., Bismo S. and Nasikin M. 2009. Bio grease Based on Palm Oil and Lithium Soap Thickener: Evaluation of Anti wear Property. World Applied Sciences Journal, 6: 401-402.
 Liao S. 2004. On the homotopy analysis method for nonlinear problems. Applied Mathematics and Computation, 147:499–513.
 Shah A. and Islam S. 2011. An Explicit Analytical Solution of a Slider Bearing with a Third Grade Non-Newtonian Fluid as Lubricant. World Applied Sciences Journal, 14: 1397-1398.
 Ahmadi Asoor A.A. and Pashaei M.H. 2010. Experimentally Study on the Effects of Type of Joint on Damping. World Applied Sciences Journal, 8: 611-612.
 Akhshabi M. 2011. A New Fuzzy Multi Criteria Model for Maintenance Policy. Middle-East Journal of Scientific Research, 10:36-37.
 Mohamadi Monavar H., Ahmadi H. and Mohtasebi S.S. 2008. Prediction of Defects in Roller Bearings Using Vibration Signal Analysis. World Applied Sciences Journal, 4: 152-154.
 Hariharan V. and Srinivasan P.S.S. 2010. Vibrational Analysis of Flexible Coupling by Considering Unbalance. World Applied Sciences Journal, 8: 1022-1023.
 Eftekhari M., Javadi M. and Farsani R.E. 2011. Free vibration analysis of cracked functionally graded material beam. World Applied Sciences Journal, 12:1223-1224.
 Hosseini H., Ganji D.D., Abaspour M. and Kaliji H.D. 2011. Effect of Axial Force on Natural Frequency of Lateral Vibration of Flexible Rotating Shafts. World Applied Sciences Journal, 15: 853-854.