Identifying Unbalance in Forced Draft Fan Using Vibration Measurement Methods

Abstract

The Forced Draft (FD) Fan is a component in a power plant that serves as a supplier of secondary air to assist combustion within the boiler. The Forced Draft Fan has a motor coupled to an impeller, where this component often experiences imbalance with very high vibration values. The imbalance can affect performance and decrease the efficiency of the Forced Fan. Special maintenance in the form of balancing is required to reduce vibration values according to ISO 10816-3 standards so that the Forced Draft Fan can operate safely. In one power plant, there was a Forced Draft Fan experiencing unbalance on the impeller side. In this study, the highest vibration value for the Forced Draft Fan was found at the MOH point, measuring 4.75 mm/s, and after balancing, the vibration value decreased to 0.82 mm/s.

Country : Indonesia

1 Norman Iskandar2 Kusuma Febriyanto3 Awaludin Aziz4 Sulardjaka

  1. Mechanical Engineering, Diponegoro University, Semarang, Indonesia
  2. Mechanical Engineering, Diponegoro University, Semarang, Indonesia
  3. Tanjung Awar-Awar Power Station Plant, PT Nusantara Power, Tuban, East Java, Indonesia
  4. Mechanical Engineering, Diponegoro University, Semarang, Indonesia

IRJIET, Volume 8, Issue 5, May 2024 pp. 1-5

doi.org/10.47001/IRJIET/2024.805001

References

  1. S. Yadav, “Noise Reduction Techniques for Forced Draft Fan in Thermal Power Plant using Inline Diffuser Silencer,” vol. 2, no. 04, p. 71, 2017, [Online]. Available: www.ijrti.org.
  2. V. Mrzljak, P. Blecich, N. Andelić, and I. Lorencin, “Energy and exergy analyses of forced draft fan for marine steam propulsion system during load change,” J. Mar. Sci. Eng., vol. 7, no. 11, 2019, doi: 10.3390/jmse7110381.
  3. E. R. Pratama and A. F. H. Mukhammad, “Bearing failure analysis on gearbox forced draft fan at LNG plant,” Indones. J. Sci. Technol., vol. 3, no. 2, pp. 124–137, 2018, doi: 10.17509/ijost.v3i2.12756.
  4. C. Subramanian, H. Roy, A. Mondal, D. Ghosh, S. K. Laha, and K. Janardhanji Uke, “Failure of induced draft-ID fan blade in coal fired boiler,” Eng. Fail. Anal., vol. 122, no. December 2020, p. 105282, 2021, doi: 10.1016/j.engfailanal.2021.105282.
  5. M. Nurbanasari, T. Kristyadi, T. S. Purwanto, A. Maulana, and R. R. Fadilah, “Damage analysis of the forced draft fan blade in coal fired power plant,” Case Stud. Eng. Fail. Anal., vol. 8, no. February, pp. 49–56, 2017, doi: 10.1016/j.csefa.2017.04.005.
  6. F. Dalmazzo Sanches, A. Ap Cavallini, and V. Steffen, “Theoretical and experimental applications of a rotor balancing technique without using trial weights based on augmented Kalman filter,” Mech. Syst. Signal Process., vol. 208, no. December 2023, p. 111066, 2024, doi: 10.1016/j.ymssp.2023.111066.
  7. Y. T. Sun and H. Z. Ma, “Research progress on oil-immersed transformer mechanical condition identification based on vibration signals,” Renew. Sustain. Energy Rev., vol. 196, no. November 2023, p. 114327, 2024, doi: 10.1016/j.rser.2024.114327.
  8. L. S. Dhamande, V. P. Bhaurkar, and P. N. Patil, “Vibration analysis of induced draught fan: A case study,” Mater. Today Proc., vol. 72, pp. 657–663, 2023, doi: 10.1016/j.matpr.2022.08.329.
  9. B. Cahyono, D. Priyanta, and F. R. F. Ramadhan, “Vibration Spectrum Analysis for Indicating Damage on Turbine and Steam Generator Amurang Unit 1,” Int. J. Mar. Eng. Innov. Res., vol. 2, no. 1, 2017, doi: 10.12962/j25481479.v2i1.2688.
  10. D. Rhakasywi, A. Marasabessy, M. R. Hatuwe, and S. Kotahatuhaha, “Safety factor of pump vibrations on ships based on the natural frequency of pump vibrations according to ISO 10816-3,” J. Mech. Eng. Res. Dev., vol. 43, no. 7, pp. 180–192, 2020.