Patterns in change and balancing of aerodynamic imbalance of the lowpressure axial fan impeller
DOI:
https://doi.org/10.15587/1729-4061.2018.133105Keywords:
axial fan, aerodynamic forces, aerodynamic imbalance, dynamic balancing, auto-balancer, auto-balancingAbstract
We have studied patterns in the change and balancing of aerodynamic imbalance of the impeller for the axial fan of type VO-06-300 (Ukraine).
We have found the aerodynamic imbalance of the impeller caused by mounting one blade:
– at a different angle of attack;
– with a violation in the step uniformity;
– not perpendicularly to the longitudinal axis of the impeller;
– with all three of the above-mentioned errors present at once.
We have estimated a change in the aerodynamic imbalance due to change in air density. We estimated the influence of air temperature, altitude above sea level, atmospheric pressure, on air density and aerodynamic imbalance.
It was established that a different angle of attack and a violation of the perpendicularity give rise to the dynamic imbalance in which the moment component is an order of magnitude larger than the static component. A violation of the step uniformity gives rise only to the static component, which is in the plane of the impeller.
Among the errors considered, the most undesirable one relates to mounting a blade at a different angle of attack. At such an error, aerodynamic imbalance is 6‒8 times larger than that due to other errors. A ±4-degree change in the angle of attack of a single blade in the impeller can degrade the accuracy of balancing of the impeller to the accuracy class G 6.3 at a frequency of 1,500 rpm, or G 16 ‒ at 3,000 rpm.
It was established that the ordinary and aerodynamic imbalances can be balanced at the same time. It is appropriate to carry out dynamic balancing in two correction planes. It is possible to conduct balancing by rotor mass correction or using passive auto-balancers.
A specific example is used to demonstrate the procedure for taking into consideration the aerodynamic imbalance in differential equations of motion of the axial fan. In accordance with the procedure, the aerodynamic imbalance components are added to the respective components of the ordinary imbalance.
The results obtained are applicable when designing and manufacturing low-pressure axial fans. Employing them would improve vibration characteristics of the specified fans.
References
- Polyakov, V., Skvortsov, L. (1990). Pumps and Fans. Moscow: Stroyizdat, 336.
- Axial fans VO 06-300/VO-12-300. Gradvent. Available at: http://gradvent.org.ua/ventilyatory/ventilyatory-osevye/vo-06-300
- Ziborov, K., Vanga, G., Marenko, V. (2013). Imbalance As A Major Factor Influencing The Work Rotors Mine Main Fan. Modern engineering. Science and education, 3, 734–740. Available at: http://docplayer.ru/36451188-Udk-k-a-ziborov-g-k-vanzha-v-n-marenko.html
- Korneev, N. (2008). Aerodynamic disbalance of the turbocompressor as the reason of lowering of power indexes of internal combustion engines. Machine Builder, 10, 24–27.
- Korneev, N. V., Polyakova, E. V. (2014). The calculation of the aerodynamic the disbalance rotor of turbocharger ICE. Machine Builder, 8, 13–16.
- Idelson, A. M., Kuptsov, A. I. (2006). Elastic deformation of fan blades as a factor, influencing the gas-dynamic unbalance. Vestnik SSAU, 2-1 (10), 234–238.
- Idelson, A. M. (2003). Modeling of aerodynamic unbalance on fan blades. Problems and prospects of engine development, 180–185.
- Suvorov, L. M. (2009). Pat. No. 2419773 RU. Procedure for low speed mass balancing and aerodynamics of high speed vane rotor. MPK G01M 1/00 (2006.01). No. 2009109011/28; declareted: 11.03.2009; published: 27.05.2011, Bul. No. 15.
- Yang, X., Wu, C., Wen, H., Zhang, L. (2017). Numerical simulation and experimental research on the aerodynamic performance of large marine axial flow fan with a perforated blade. Journal of Low Frequency Noise Vibration and Active Control, 1–12. doi: 10.1177/0263092317714697
- Qu, X., Han, X., Bi, R., Tan, Y. (2015). Multi-objective genetic optimization of impeller of rail axial fan based on Kriging model. Zhongguo Jixie Gongcheng/China Mechanical Engineering, 26 (14), 1938–1943.
- Bamberger, K., Carolus, T. (2017). Development, Application, and Validation of a Quick Optimization Method for the Class of Axial Fans. Journal of Turbomachinery, 139 (11), 111001. doi: 10.1115/1.4036764
- Liu, Z., Han, B., Yeming, L., Yeming, L. (2017). Application of the objective optimization algorithm in parametric design of impeller blade, 50 (1), 19–27. Available at: http://journals.tju.edu.cn/zrb/Upload/PaperUpLoad/c3eb690d-ce15-49e7-98c4-2d431edf2c0d.pdf
- Almazo, D., Rodríguez, C., Toledo, M. (2013). Selection and Design of an Axial Flow Fan. World Academy of Science, Engineering and Technology International Journal of Aerospace and Mechanical Engineering, 7 (5), 923–926.
- Filimonikhin, G., Olijnichenko, L. (2015). Investigation of the possibility of balancing aerodynamic imbalance of the impeller of the axial fan by correction of masses. Eastern-European Journal of Enterprise Technologies, 5 (7 (77)), 30–35. doi: 10.15587/1729-4061.2015.51195
- Filimonikhin, G. B., Yatsun, V. V. (2009). Determination of the principal vector and the principal moment of aerodynamic forces acting on the rotating impeller of the fan. Collection of scientific works KNTU, 22, 364–370.
- Yatsun, V. V. (2009). A mathematical model of the self-important culmovami auto-balancers of the crank of the axis fan. Vesnik mining university, 9, 11–18.
- Filimonikhin, G., Filimonikhina, I., Yakymenko, M., Yakimenko, S. (2017). Application of the empirical criterion for the occurrence of auto-balancing for axisymmetric rotor on two isotropic elastic supports. Eastern-European Journal of Enterprise Technologies, 2 (7 (86)), 51–58. doi: 10.15587/1729-4061.2017.96622
- Olijnichenko, L., Goncharov, V., Sidei, V., Horpynchenko, O. (2017). Experimental study of the process of the static and dynamic balancing of the axial fan impeller by ball auto-balancers. Eastern-European Journal of Enterprise Technologies, 2 (1 (86)), 42–50. doi: 10.15587/1729-4061.2017.96374
- Olijnichenko, L., Hruban, V., Lichuk, M., Pirogov, V. (2018). On the limited accuracy of balancing the axial fan impeller by automatic ball balancers. Eastern-European Journal of Enterprise Technologies, 1 (1 (91)), 27–35. doi: 10.15587/1729-4061.2018.123025
- Brusylovskyy, I. V. (1984). Aerodynamics of axial fans. Мoscow: Engineering, 240.
- Alexandrov, V. L. (1951). Balloon screws. Мoscow: Oborongiz, 493.
- Zahordan, A. M. (1955). The elementary theory of the helicopter. Мoscow: Voenizdat, 216.
- World Meteorological Organization Global Weather & Climate Extremes Archive. Arizona State University. Available at: https://wmo.asu.edu
- Khrgian, A. Kh. (1969). Fizika atmosfery [Physics of the atmosphere]. Leningrad: Gidrometeoizdat, 476.
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