Efficiency of belt conveyor as function of belt speed regulation algorithm

Coal flows in mines feature randomness. For this reason, it is reasonable to enhance efficiency of belt conveyors through coordination of belt speed and size of coal feed to be transported. The speed regulation quality of different control algorithms is evaluated. For the purpose of discontinuous control, the conveyor load factor is estimated. Different numbers of speed selection levels are analyzed, and the linear load per unit length of conveyor, q(t), as well as its deviation from the rated value qrate are determined for each scenario. For the continuous speed regulation, the RMS error of deviation of the current maximal belt speed proportional to the load size is evaluated. These calculations are performed for two cases of spectral density of random load: the normal distribution and the truncated normal distribution. The energy efficiency of the belt speed regulation systems is discussed. The highest energy efficiency is reached when the load flow is a discontinuous process of periods of coal feed and no coal feed, with random durations of these periods. Reduction in the energy consumption of mineral conveying can reach 12, 13 and 15% in case of three-level, four-level and continuous speed regulation, respectively. Energy saving grows when the no coal flow periods are long as the belt moves with lower speed in these periods. These solutions can be applied to the synthesis of a control system for a main conveyor speed.

Keywords: discontinuous speed regulation, optimized speed selection levels, continuous speed regulation, RMS error of regulation, energy efficiency of regulation, energy saving.
For citation:

Dmitrieva V. V., Sizin P. E. Efficiency of belt conveyor as function of belt speed regulation algorithm. MIAB. Mining Inf. Anal. Bull. 2020;(11):128-139. [In Russ]. DOI: 10.25018/02361493-2020-11-0-128-139.

Acknowledgements:
Issue number: 11
Year: 2020
Page number: 128-139
ISBN: 0236-1493
UDK: 622.647.21
DOI: 10.25018/0236-1493-2020-11-0-128-139
Article receipt date: 24.02.2020
Date of review receipt: 28.04.2020
Date of the editorial board′s decision on the article′s publishing: 10.10.2020
About authors:

V.V. Dmitrieva, Cand. Sci. (Eng.), Assistant Professor, Gubkin Russian State University of Oil and Gas (National Research University), 119991, Moscow, Russia, e-mail: dm-valeriya@yandex.ru,
P.E. Sizin, Cand. Sci. (Phys. Mathem.), Assistant Professor, Institute of Basic Education, National University of Science and Technology «MISiS», 119049, Moscow, Russia, e-mail: mstranger@list.ru.

 

For contacts:

P.E. Sizin, e-mail: mstranger@list.ru.

Bibliography:

1. Dyachenko V. P. Methods of describing of the random freight traffic value of the band conveyors of mining enterprises on the basis of its empirical distributions. MIAB. Mining Inf. Anal. Bull. 2007, no 3, pp. 287—289. [In Russ].

2. Prokuda V. M., Mishansky Yu.A., Prozenko S. N. Investigation and evaluation of the freight traffic on the magistral conveyor transport of the PSP «Mine «Pavlogradskaya» PAO «DTEK Pavlogradugol». Gіrnicha elektromekhanіka ta avtomatika. 2012, no 88, pp. 107—111.

3. Galkin V. I. Design features of belt conveyors with a spatial route for transporting bulk materials. Russian Mining Industry. 2018, no 1, pp. 84—86. [In Russ].

4. He D., Pang Y., Lodewijks G., Liu X. Healthy speed control of belt conveyors on conveying bulk materials. Powder Technology. 2018. Vol. 327. Pp. 408—419. DOI: 10.1016/j.powtec.2018.01.002.

5. He D., Pang Y., Lodewijks G. Speed control of belt conveyors during transient operation. Powder Technology. 2016. Vol. 301. Pp. 622—631. DOI: 10.1016/j.powtec.2016.07.004.

6. Li Zh., Zeng F., Yan C., Wang J., Tang L. Design of belt conveyor speed control system of «Internet+». IOP Conference Series: Materials Science and Engineering. 2019. Vol. 563. No 4. DOI: 10.1088/1757-899X/563/4/042088.

7. Bebic M., Ristic L. Speed controlled belt conveyors: drives and mechanical. Advances in Electrical and Computer Engineering. 2018, no 1. Pp. 51—60.

8. Dmitrieva V. V. Razrabotka i issledovanie sistemy avtomaticheskoy stabilizatsii pogonnoy nagruzki magistral'nogo konveyera [Development and research of the system of automatic stabilization of linear load of the main conveyor], Candidate’s thesis, Moscow, 2005, 162 p.

9. Dmitrieva V. V., Sizin P. E. Value and number of optimal gear change levels for conveyor belt velocity. MIAB. Mining Inf. Anal. Bull. 2019, no 6, pp. 147—155. [In Russ]. DOI: 10.25018/0236-1493-2019-06-0-147-155.

10. Dmitrieva V. V., Sizin P. E. Continuous belt conveyor speed control in case of reduced spectral density of load flow. MIAB. Mining Inf. Anal. Bull. 2020, no 2, pp. 130—138. [In Russ]. DOI: 10.25018/0236-1493-2020-2-0-130-138.

11. Shakhmeyster L. G., Dmitriev V. G., Lobacheva A. K. Dinamika gruzopotokov i regulirovanie skorosti lentochnogo konveyera [Dynamics of freight traffic and regulating of the speed of a belt conveyor], Moscow, izd. MGI, 1974, 45 p.

12. Mertsalov R. V. Issledovaniya podzemnykh gruzopotokov i ustanovlenie sposobov povysheniya effektivnosti ispol'zovaniya shakhtnykh konveyerov [Study of underground freight traffics and finding ways to improve the efficiency of use of mining conveyors], Candidate’s thesis, Moscow, 1968.

13. Razumniy Yu. T., Zaika V. T., Prokuda V. N. Formation of characteristics of the coal flow of conveyor transport based on the data of modeling of mine freight traffic from treatment faces. Naukovі pratsі Donets'kogo natsіonal'nogo tekhnіchnogo unіversitetu. Serіya: Elektrotekhnіka і energetika. 2013, no 2 (15), pp. 201—206.

14. Reutov A. A. Patent RU 2600404. 2015.10.14.

15. Solodovnikov V. V., Plotnikov V. N., YAkovlev A. V. Teoriya avtomaticheskogo upravleniya tekhnicheskimi sistemami: uchebnoe posobie dlya vuzov [Theory of automatic control of technical systems: studies. Handbook for universities], Moscow, Izd-vo MGTU im. N.E. Baumana, 1993, 492 p.

16. Dmitriev V. G., Verzhanskiy A. P. Osnovy teorii lentochnykh konveyerov [Grounds of the belt conveyor theory], Moscow, Izd-vo «Gornaya kniga», 2017, 590 p.

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