本文選題：效果測評 + Visual　； 參考：《太原理工大學》2015年碩士論文

【摘要】：近幾年，煤炭加工企業(yè)規(guī)模不斷擴大的趨勢十分明顯，各類大型設備不斷投入現場運行，同時選煤廠是一種典型的流程式、各工藝環(huán)節(jié)環(huán)環(huán)相扣的加工企業(yè)，一臺設備的故障可能導致大量的連鎖反應，最終影響產品質量�，F場技術人員難以及時、全面、準確的掌握各環(huán)節(jié)設備的工作現狀和設備動態(tài)，無法及時發(fā)現問題，不利于科學管理。 本文在選煤設備單機檢查的基礎上，采用VB語言程序對主要設備的效果測評進行系統(tǒng)設計。該系統(tǒng)主要包括以下環(huán)節(jié)：重介、磁選、脫水及濃縮。主要針對的設備有旋流器、磁選機、加壓過濾機、濃縮機，并進一步對以上設備開展效果測評。效果測評系統(tǒng)針對旋流器這一重介設備的測評過程，主要采用過程分析法，利用多環(huán)節(jié)如分配率及其曲線繪制、錯配物及其曲線繪制、可選性曲線繪制過程中的多個指標逐步實現其效能指標的可視化；對于磁選、脫水、濃縮三個環(huán)節(jié)，分別選取磁選機、加壓過濾機、濃縮機三臺設備，采用綜合分析法，結合多個指標對相應設備進行效能分析。在以上四個環(huán)節(jié)的結束部分都設有效果分析的功能鍵，點擊即可了解這一環(huán)節(jié)設備工作效果的測評情況。在系統(tǒng)的結束部分設有綜合分析環(huán)節(jié)，這一環(huán)節(jié)將上下游相關聯(lián)設備的效果測評數據進行整合，結合預設指標的判斷方式，給出相應分析結論。主要結論如下： (1)旋流器Ep值為0.116；數量效率值為98.15%；δ0.1為17.95%(中等可選)；分選密度δp1下錯配物總量m0為5.257％，，等誤密度δe1下的錯配物總量m0為4.976％。旋流器分選精度的Ep值明顯偏高，錯配物含量較高，旋流器分選精度低； (2)磁選機磁選效率為83.37%，磁性物回收率為84.08%，混入精礦中煤泥占入料煤泥量為0.71%。磁選機磁選精度較高，但是分選效果不佳，有大量的磁性物隨尾礦流失； (3)脫水效率為78.01%，產品水分為20.21%，整體指標較為合理。但濾液水濃度24.59g/L，明顯偏高。同時結合小篩分曲線分析，濾餅中粗顆粒物料比例較大，大量細粒物料進入濾液，應注意濾機濾板及濾布的維護與更換； (4)濃縮機濃縮效率96.33%、底流固體物回收率為99.46%，溢流水濃度為0.13g/L，濃縮機整體工作情況良好； 本系統(tǒng)利用系統(tǒng)層次分析法，將選煤廠各主要設備歸入相應的環(huán)節(jié)模塊，設計更為直觀的試驗結果呈現方式，實現龐雜數據的自動整合計算，并最終生成報表，解決了選煤廠設備定期單機檢查試驗數據繁巨，難以處理，同時計算準確性不高，難以指導現場操作的難題，為精細化檢修提供了依據。
[Abstract]:In recent years , the expanding trend of coal processing enterprises is obvious , and various large - scale equipment are continuously put into the field operation , and meanwhile , the coal preparation plant is a typical process type , and the fault of one equipment can lead to a large number of chain reactions and finally influence the product quality .

On the basis of single - machine inspection of coal - selecting equipment , the system design is carried out by using VB language program to evaluate the effectiveness of main equipment . The system mainly includes the following steps : heavy - dielectric , magnetic separation , dewatering and concentration . The main aim of this system is cyclone , magnetic separator , pressure filter and thickener .
For the three links of magnetic separation , dehydration and concentration , three equipment of magnetic separator , pressure filter and thickener are selected respectively , and the performance analysis of the corresponding equipment is carried out by means of comprehensive analysis method . At the end of the above four links , the function keys of effect analysis are set up , and the evaluation of the work effect of the equipment in this link will be understood . At the end of the system , the evaluation data of the effect of the equipment in the upstream and downstream are integrated , and the corresponding analysis conclusion is given in combination with the judgment mode of the preset index . The main conclusions are as follows :

( 1 ) the value of swirler is 0.116 ;
the quantity efficiency value is 98.15 % ;
未0.1 is 17.95 % ( medium optional ) ;
The total amount of mismatch in the separation density 未p1 is 5.257 % , and the total amount of the mismatch in the equal error density 未e1 is 4.976 % . The value of the separation precision of the cyclone is obviously higher , the content of the mismatch is high , and the separation accuracy of the cyclone is low ;


( 2 ) the magnetic separation efficiency of the magnetic separator is 83.37 % , the recovery rate of the magnetic substance is 84.08 % , the coal slime mixed in the concentrate accounts for 0.71 % of the coal slime amount , the magnetic separation precision of the magnetic separator is high , but the separation effect is poor , and a large amount of magnetic substances are lost with the tailings ;


( 3 ) The dehydration efficiency is 78.01 % , the water content of the product is 20.21 % , the whole index is reasonable , but the water concentration of the filtrate is 24.59g / L , which is obviously higher .


( 4 ) the concentration efficiency of the thickener is 96.33 % , the recovery rate of the underflow solids is 99.46 % , the overflow water concentration is 0.13 g / L , and the overall working condition of the thickener is good ;


According to the system level analysis method , each main equipment of the coal preparation plant is integrated into the corresponding link module , the design is more intuitive test result presentation mode , the automatic integration calculation of the complex data is realized , and the report is finally generated , so that the problem that the data is large and difficult to handle is solved , and meanwhile , the calculation accuracy is low , and the problem that the field operation is difficult to be guided is difficult to be guided , and the basis is provided for fine maintenance .
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD94;TD672

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本文編號：1997315