대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제27권7호
  • /
  • Pages.938-947
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  • 2003
  • /
  • 1226-4881(pISSN)
  • /
  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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Decanter형 원심분리기의 동력 계산 (II) - 총동력과 동력전달 기구 -

Analysis of the Power for a Decanter-Type Centrifuge (II) - Total Power and the Power-Transmission Mechanism -

  • 서용권 (동아대학교 기계산업시스템공학부) ;
  • 한근조 (동아대학교 기계산업시스템공학부)
  • 발행 : 2003.07.01
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초록

In this paper, we derived the formula for estimating the power of the electric motors needed to operate the Decanter-type centrifuge. In the derivation of the formula the sludge-removal torque is to be supplied from the formula derived in the first paper. The intricate nature of the transmission mechanism in the planetary gear trains of the sludge-removal power and torque has been clarified in this second paper. In particular we considered two-motor system, where the main motor drives the machine while the differential-speed control motor plays the role of braking in adjusting the differential speed. Sample calculation for the specific design treated in the first paper showed that the selection criterion for the main motor depends on the lower limit of the differential speed; when the lower limit is set low, it should be selected based on the steadily operating power, while it should be selected based on the starting power when the lower limit is set high. The total power required by both the main motor and the differential-speed control motor increases as the differential speed is decreased. It is suggested that the power loss in the differential-speed control motor could be minimized by attaching an electric generator to it.

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참고문헌

  1. Records, A. and Sutherland, K., 2001, Decanter Centrifuge Handbook, Elsevier Advanced Technology
  2. Leung, W.W.-F., Shapiro, A.H. and Yarnell, R., 1999, 'Improvements in the Clarification of Finite-Particle Slurries Using Decanter Centrifuges,' Filtration & Separation, November, 1999, pp. 32-37 https://doi.org/10.1016/S0015-1882(99)80213-4
  3. Leung, W.W.-F. and Shapiro, A.H., 1999, 'Dewatering of Finite-Particle Slurries Using a Compound-Beach Decanter with Cake-Flow Control,' Filtration & Separation, December, 1999, pp. 49-56 https://doi.org/10.1016/S0015-1882(99)90087-3
  4. Corner-Walker, N. and Laval, A., 2000, 'The Dry Solids Decanter Centrifuge: Capacity Scaling,' Filtration & Separation, May, 2000, pp. 28-32 https://doi.org/10.1016/S0015-1882(00)88850-3
  5. Cheremisinoff, N.P., 1986, 'Industrial Centrifuging Practices,' in Encyclopedia of Fluid Mech., Vol. 5-2 Slurry Flow Technology (ed. by Cheremisinoff, N.P.), Gulf Publishing Co., pp. 1231-1245