基于耦合仿真技術的擺式磨機進氣風道優化設計
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桂林電子科技大學 機電工程學院

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廣西重點研發計劃項目(項目號:桂科AB23075080);廣西制造系統與先進制造技術重點實驗室(主任基金)項目(項目號:22-35-4-S007);2021年廣西研究生聯合培養基地項目(桂學位(2021)6號)。


Optimal Design of Pendulum Mill Inlet Air Duct Based on Coupled Simulation Technology
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Guilin University of Electronic Technology

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    摘要:

    為了解決擺式磨機存在高能耗、風道積料和局部磨損等問題,對現有進氣風道(蝸殼和風道葉片)結構設計方案進行研究?;诹黧w動力學與多相流及離散元耦合仿真技術,進行擺式磨機的內部風場與顆粒場的數值模擬。進行蝸殼線型、風道葉片角度和葉片數量的響應面仿真試驗,結果表明優化蝸殼線型有利于降低壓損和設備能耗,合理選擇葉片角度和葉片數量有利于降低風道的不均勻系數進而調控流場?;趬簱p和不均勻系數的多目標優化,確定風道結構的最優方案:蝸殼2,葉片數量18片、葉片角度55°。優化方案的成品收集效率高達95.3%,比企業原方案提高13.4%。仿真結果與現場實驗數據的一致性較好,可以為擺式磨機的優化與節能設計提供指導。

    Abstract:

    In order to solve the problems of high energy consumption, air duct accumulation and local wear of pendulum mill, the structural design scheme of air inlet duct (including volute and air duct blade) was studied. Based on coupling simulation techniques of fluid dynamics, multiphase flow and discrete element, Numerical simulation of the internal wind field and particle field of the pendulum mill were carried out. The response surface simulation tests of volute profile, blade Angle and blade number were also performed. The results show that optimizing volute profile is beneficial to reducing pressure loss and equipment energy consumption, and reasonable selection of blade angle and blade number is beneficial to reducing the non-uniform coefficient of air duct and regulating flow field. Based on the multi-objective optimization of pressure loss and non-uniformity coefficient, the optimal scheme of air duct structure is determined as: volute 2, blade number 18, blade angle 55°. The finished product collection efficiency of the optimized scheme is 95.3%, which is 13.4% higher than that of the original scheme. The simulation results are in good agreement with the field experimental data, which can provide guidance for the optimization and energy-saving design of pendulum mill.

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  • 收稿日期:2024-05-11
  • 最后修改日期:2024-06-27
  • 錄用日期:2024-07-01
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