Analysis of shaft alignment on vibration and motor power consumption in cooling water pumps
Keywords:
alignment, cooling water pump, misalignment, vibrationAbstract
Motors and pumps are the crucial components for various industrial production processes such as manufacturing, oil and gas, and chemical processing. However, one common issue affecting their reliability and efficiency is shaft misalignment. Research indicates that 30–40% of major financial losses in industrial operations are caused by misalignment, while 42–50% of motor failures are due to bearing damage. It is caused by poor alignment, insufficient lubrication, or improper installation. This study focuses on evaluating the effect of shaft alignment on vibration levels and motor power consumption in a cooling water pump at the Koto Panjang Hydroelectric Power Plant. A quantitative experimental approach was applied to measure and compare equipment performance before and after alignment. Results show that alignment reduces the highest axial vibration velocity by 8.35 mm/s and vertical vibration by 1 mm/s. Furthermore, motor power consumption decreases by 8.35%, as demonstrated by a reduction in average motor current from 76.8 A to 71.2 A. The vibration pattern confirms the angular misalignment as the dominant factor contributing to instability. These findings show the importance of routine shaft alignment, not only for minimizing vibration and extending equipment lifespan but also for enhancing energy efficiency and reducing operational costs.
References
M. A. Batutah and H. Huda, “Analysis of Pump Installation Design for Clean Water in Pt Pamapersada Nusantara , Indo District - Bontang, East Kalimantan in Barak 15 Junior Staff Camp 2000,” J. Chemurg. 6, vol. 6, no. 200, pp. 86–96, 2022, doi: https://dx.doi.org/10.30872/cmg.v6i2.9395.
I. Mendoza and G. Zurita, “Shaft Alignment Measurement System Developed for Industrial Applications,” Investig. Desarro., vol. 18, no. 1, pp. 91–102, 2018, doi: https://dx.doi.org/10/23881/idupbo.018.1-7i.
P.P.S Saputra, “Pendeteksian Misalignment Menggunakan Multi Level Transformasi Wavelet Haar dan Coiflet pada Motor Induksi,” J. JEETech, vol. 1, no. 1, pp. 1–6, May 2020, doi: https://doi.org/10.48056/jeetech.v1i1.1.
F. Rachmanu, “PEMANTAUAN KONDISI POMPA SENTRIFUGAL P-12A MENGGUNAKAN ANALISIS VIBRASI STUDI KASUS DI PT. X,” Ramatekno, vol. 2, no. 1, pp. 14–19, 2022, doi: https://doi.org/10.61713/jrt.v2i1.34.
Z. Anthony and E. Erhaneli, “Kinerja Motor Induksi 1-Fasa Disain 4 Kumparan Dengan Kapasitansi Kapasitor Jalan Terkendali," Elkha, vol. 12, no. 1, 2020, doi: https://doi.org/10.26418/elkha.v12i1.37857.
S. Arhun, A. Hnatov, V. Mygal, and N. Kunicina, “Elevating electric motor performance through rigorous vibration control and standardization,” Adv. Mech. Eng., vol. 16, no. 6, pp. 1–9, 2024, doi: https://doi.org/10.1177/16878132241262677.
D. L. Branković, Z. N. Milovanović, and V. Z. J. Milovanović, “The Importance of Technical Diagnostics for Ensuring the Reliability of Industrial Systems BT - Reliability and Maintainability Assessment of Industrial Systems: Assessment of Advanced Engineering Problems,” M. Ram and H. Pham, Eds., Cham: Springer International Publishing, 2022, pp. 143–187. doi: https://doi.org/10.1007/978-3-030-93623-5_8.
J.-W. Cheng, W.-J. Bu, L. Shi, and J.-Q. Fu, “A real-time shaft alignment monitoring method adapting to ship hull deformation for marine propulsion system,” Mech. Syst. Signal Process., vol. 197, p. 110366, 2023, doi: https://doi.org/10.1016/j.ymssp.2023.110366.
I. Darmawan, K. Kholistianingsih, A. Purwanto, P. Yulianto, and S. Pramono, “Pengurangan Gangguan Akibat Kegagalan Pengukuran Vibrasi pada Primary Air Fan (PAF) di PLTU Jateng 2 Adipala Operation and Maintenance Services Unit,” J-Proteksion J. Kaji. Ilm. dan Teknol. Tek. Mesin, vol. 7, pp. 35–46, Feb. 2023, doi: https://doi.org/10.32528/jp.v7i2.8306.
L. Evans, I. Ashton, and B. G. Sellar, “Impact on Energy Yield of Varying Turbine Designs under Conditions of Misalignment to the Current Flow,” Energies, vol. 16, no. 9, pp. 1–17, 2023, doi: https://doi.org/10.3390/en16093923.
L. K.K., L. D.L., and K. D.F., “Experimental Investigation of the Effect of Coupling Misalignment of a Centrifugal Pump Unit on Its Vibration and Noise Characteristics,” in 2022 International Conference on Dynamics and Vibroacoustics of Machines (DVM), IEEE, Sep. 2022, pp. 1–10. doi: 10.1109/DVM55487.2022.9930934.
P. Kumar and H. Hirani, “Misalignment effect on gearbox failure: An experimental study,” Measurement, vol. 169, p. 108492, 2021, doi: https://doi.org/10.1016/j.measurement.2020.108492.
S. Lee, T. Kim, and T. Kim, “Multi-domain vibration dataset with various bearing types under compound machine fault scenarios,” Data Br., vol. 57, p. 110940, 2024, doi: https://doi.org/10.1016/j.dib.2024.110940.
S. Chen, Z. Liu, X. He, D. Zou, and D. Zhou, “Multi-mode fault diagnosis datasets of gearbox under variable working conditions,” Data Br., vol. 54, p. 110453, 2024, doi: https://doi.org/10.1016/j.dib.2024.110453.
S. Bruinsma, R. D. Geertsma, R. Loendersloot, and T. Tinga, “Motor current and vibration monitoring dataset for various faults in an E-motor-driven centrifugal pump,” Data Br., vol. 52, p. 109987, 2024, doi: https://doi.org/10.1016/j.dib.2023.109987.
G. Nan, S. Yang, and D. Yu, “Misalignment and Rub-Impact Coupling Dynamics of Power Turbine Rotor with Offset Disk,” 2024. doi: https://doi.org/10.3390/app14031298.
A. A. S. R. de Sousa and M. R. Machado, “Experimental vibration dataset collected of a beam reinforced with masses under different health conditions,” Data Br., vol. 52, p. 110043, 2024, doi: https://doi.org/10.1016/j.dib.2024.110043.
M. F. Yahya, R. M. Dan, and N. A. Aqila, “Experimental investigation on shaft motor coupling misalignment impact on energy consumption,” 2024, p. 060011. doi: https://doi.org/10.1063/5.0228180.
T. Mashiyane, D. Desai, and L. Tartibu, “Numerical simulation of the effect of angular misalignment on the dynamic behaviour of bearing,” MATEC Web Conf., vol. 370, p. 09003, 2022, doi: https://doi.org/10.1051/matecconf/202237009003.
A. Triyanto, O. Supriadi, and R. Maulana, “Analisis Parallel Misalignment Pada Motor Tiga Fasa Menggunakan Digital Diagnostics System,” Epic J. Electr. Power Instrum. Control, vol. 7, no. 1, pp. 21–31, 2024, doi: https://doi.org/10.32493/epic.v7i1.38741.
M. Vishwakarma, R. Purohit, V. Harshlata, and P. Rajput, “Vibration Analysis & Condition Monitoring for Rotating Machines: A Review,” Mater. Today Proc., vol. 4, no. 2, pp. 2659–2664, 2017, doi: https://doi.org/10.1016/j.matpr.2017.02.140.
Ö. Yılmaz, M. Aksoy, and Z. Kesilmiş, “Misalignment fault detection by wavelet analysis of vibration signals,” Int. Adv. Res. Eng. J., vol. 3, no. 3, pp. 156–163, 2019, doi: https://doi.org/10.35860/iarej.451528.
I. G. Widodo, A. Khoryanton, and A. Pramono, “Analysis of vibration due to misalignment in the clutch cluster installation of centrifugal pump,” IOP Conf. Ser. Mater. Sci. Eng., vol. 1108, no. 1, p. 012037, 2021, doi: https://doi.org/10.1088/1757-899x/1108/1/012037.
J. Zhang, Y. Deng, G. Gao, and H. Zhu, “Design and Simulation of an Automatic Alignment System for Ship Multi-Support Shafting,” J. Mar. Sci. Eng., vol. 13, no. 1, 2025, doi: https://doi.org/10.3390/jmse13010087.
R. Nawir, Y. Dwianda, A. Febrianton, and P. Irwan, “The Effect of Misalignment to Vibration, Electric Current and Shaft Rotation Speed on Gear Transmission,” J. Ocean. Mech. Aerosp. - Sci. Eng., vol. 66, no. 1, pp. 14–19, 2022, doi: http://dx.doi.org/10.36842/jomase.v66i1.278.
R. R. Tashbulatov, N. A. Atroscshenko, and N. A. Lisovskiy, “Application of combined vane pumps-electric motors with rim transmission of the torque to the impeller,” Neft. khozyaystvo - Oil Ind., vol. 2021, no. 04, pp. 124–127, 2021, doi: https://doi.org/10.21595/lger.2021.22288.
L. M. Hassan and J. K. Ali, “Diagnosing the Effect of Misalignment on a Rotating System using Simulation and Experimental Study,” Al-Kitab J. Pure Sci., vol. 6, no. 2 SE-Articles, pp. 46–64, Jan. 2023, doi: https://doi.org/10.32441/kjps.06.02.p5.
