本文選題：多級帶式輸送機　切入點：速度控制　出處：《太原理工大學》2017年碩士論文　論文類型：學位論文

【摘要】：作為一種散狀物料的運輸設備,帶式輸送機具有運行效率高、輸送物料多、運輸距離長、維護成本低等優(yōu)點而被廣泛應用在礦井、碼頭和石油等領域。在煤炭的運輸過程中,帶式輸送機的運行功耗普遍偏高,主要有兩個方面的原因,一方面,帶式輸送機以高速運行,而輸送帶上的煤量一般達不到原先設計的標準值,有時甚至空載運行;另一方面,多級帶式輸送機普遍采用逆煤流啟動方式,在各級帶式輸送機依次啟動完畢且穩(wěn)定運行后,才給輸送帶上煤。這兩個方面都極大地增加了帶式輸送機的輕載或空載運行時間,造成了不必要的機械磨損,浪費了大量的電能。因此,礦井順煤流輸送系統(tǒng)節(jié)能優(yōu)化控制技術的研究勢在必行。為了達到煤流輸送系統(tǒng)的節(jié)能要求,本文從三個方面進行了研究,其一,通過帶速與運量的優(yōu)化匹配,提出了帶式輸送機速度控制的節(jié)能技術,實現(xiàn)了“煤多快拉,煤少慢拉”的目標;其二,基于速度控制,依次計算各級帶式輸送機的啟動延時時間,提出了順煤流啟動節(jié)能技術,縮短了帶式輸送機的空載運行時間;其三,綜合前兩種節(jié)能技術,進行了帶式輸送機瞬間加速時間控制的節(jié)能優(yōu)化實驗。根據(jù)適當降低帶速可以使輸送帶上物料橫截面積達到最大的前提,提出了帶式輸送機速度控制的節(jié)能技術。并分析了節(jié)能技術的原理、煤礦帶式輸送機的落料形式;鑒于煤炭生產(chǎn)的間斷性,驅動帶式輸送機的電機經(jīng)常以非最佳工況點運行,且?guī)捷斔蜋C的速度不能進行頻繁地調節(jié),建立了帶速與運量的階梯匹配模型;在帶式輸送機瞬間加速過程中,設置了合理的速度和加速度曲線,得到了最小加速時間的計算方法。在研究已有的多級帶式輸送機順煤流啟動方法的基礎上,提出了基于速度控制的順煤流啟動節(jié)能技術。通過比較各種速度和加速度曲線,設計了“S”形軟啟動速度曲線表達式;為了更好地實現(xiàn)多級帶式輸送機的順煤流啟動過程,采取了相應的過程故障保護措施;結合實際煤炭運輸現(xiàn)場的數(shù)據(jù),對基于速度控制的順煤流啟動節(jié)能技術進行了仿真分析,即建立了具體的帶速與運量階梯匹配模型,求解了瞬間加速過程中的加速度及最小加速時間,模擬了四級帶式輸送機的順煤流啟動及相應的加速過程,從功率消耗和空載運行時間兩個方面,進行了節(jié)能計算分析,結果表明,節(jié)能效率為6.2%,一天節(jié)省的空載運行時間為0.97h。鑒于帶式輸送機速度控制的節(jié)能技術和基于速度控制的順煤流啟動節(jié)能技術,都涉及帶式輸送機在短時間內的加速過程,因此,本文設計了帶式輸送機瞬間加速時間控制的節(jié)能優(yōu)化實驗,包括硬件的選型、電氣原理圖的設計、硬件設備的安裝、PLC程序的編寫和觸摸屏畫面的繪制。在進行帶式輸送機速度的檢測與控制實驗的基礎上,開展了瞬間加速時間控制的節(jié)能優(yōu)化實驗,通過實驗測試及節(jié)能分析,結果表明,按照在瞬間加速過程中設置的加速度,計算得到的最小加速時間符合實驗要求,且有利于節(jié)能降耗和減少不必要的機械損耗。
[Abstract]:As a bulk material transport equipment, high operation efficiency of belt conveyor, conveying material, long distance transport, low maintenance costs and is widely used in mines, docks and oil fields. In the process of coal transportation in the operation of power consumption of the belt conveyor is generally high, the main reason. Two aspects on the one hand, the belt conveyor running at high speed, and the amount of coal conveying belt of the original design is generally not up to the standard value, sometimes even no-load operation; on the other hand, commonly used flow start-up mode inverse multistage belt conveyor of coal belt conveyor, in order to start finished and stable operation at all levels later, to the coal belt. These two aspects have greatly increased the belt conveyor of light load or no-load running time, causing unnecessary mechanical wear, waste a lot of power. Therefore, the mine coal seam section flow conveying system Can it is imperative to research on optimal control technology. In order to achieve the requirements of energy-saving coal conveying system, is studied in this paper, from three aspects, through the optimization of belt speed and volume, with energy saving technology of conveyor speed control is proposed to achieve the "coal fast, less coal slow pull" target; second, based on speed control, are calculated at all levels of the belt conveyor start delay time, put forward the coal flow smoothly starting energy-saving technology, shorten the idle running time of belt conveyor; third, the former two kinds of comprehensive energy saving technology, the energy-saving optimization of experimental instantaneous acceleration time control of belt conveyor. According to the appropriate reduction the conveyor belt speed can reach the maximum cross sectional area of material premise, with energy-saving technology conveyor speed control is put forward. And analyzed the principle of energy saving technology, material forms of belt conveyor in coal mine; In view of the discontinuity of coal production, motor driving belt conveyor often run in non optimal operating point, and the speed of the belt conveyor can not be adjusted frequently, a ladder belt speed and volume matching model; in an instant acceleration process of belt conveyor, set the velocity and acceleration curves obtained reasonable. The minimum acceleration time calculation method. In the multi belt conveyor of the existing basis starting method of coal flow, the speed control of coal flow smoothly start based on energy saving technology. By comparing the curve of velocity and acceleration, the design of "S" shaped soft start speed curve expression; in order to realize the multi band type the conveyor along the coal flow starting process, take corresponding measures to protect the process of failure; combined with the actual data of coal transportation field, the speed control of coal flow smoothly start energy saving technology based on Simulation analysis is carried out, namely the establishment of a specific belt speed and volume ladder matching model, solving the instantaneous acceleration in the process of acceleration and the minimum acceleration time, coal flow smoothly and the corresponding start acceleration process of four belt conveyor were simulated from the power consumption and the no-load running between the two aspects were calculated the analysis results show that, energy saving, energy saving efficiency is 6.2%, the idle running time of saving the day for 0.97h. in view of energy saving technology with conveyor speed control and speed control of coal flow smoothly starting energy-saving technology based on related acceleration process of belt conveyor in a short period of time. Therefore, this paper designed experimental instantaneous acceleration energy optimization time control of belt conveyor, including hardware selection, design of electrical principle diagram, hardware installation, drawing program PLC and touch screen in belt conveyor speed. Based on the experiment of detection and control, energy saving optimization experiments carried out instantaneous acceleration time control, through analysis, experimental test and energy saving results show that according to the set in the moment to accelerate the process of acceleration, the minimum acceleration time is calculated in accordance with the experimental requirements, and is conducive to saving energy and reducing mechanical loss is not necessary.

【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD634.1

【參考文獻】

相關期刊論文 前10條

1 李希芝;張則景;青玉芝;祁歌;李連果;馮明軍;;電機變頻調速系統(tǒng)原理分析與改進[J];電工技術;2016年08期

2 王麗芳;;兩種采煤機調速系統(tǒng)的原理與特點探析[J];煤礦機電;2016年01期

3 任俊偉;;煤礦傳感器問題梳理及解決思路[J];煤;2015年08期

4 李寧;王李管;賈明濤;;基于層次分析法的礦井六大系統(tǒng)模糊綜合評價[J];中南大學學報(自然科學版);2015年02期

5 胡智慧;;帶式輸送機變頻節(jié)能控制系統(tǒng)研究與應用[J];水力采煤與管道運輸;2014年03期

6 陳一兵;;煤礦帶式輸送機節(jié)能技術的應用[J];煤礦機電;2014年04期

7 張智宇;;煤礦自動化和通信技術現(xiàn)狀與發(fā)展趨勢[J];電子世界;2013年24期

8 羅建平;張德文;丁敏;謝文寧;;帶式輸送機節(jié)能技術分析[J];港口裝卸;2013年06期

9 程軍;李愈清;陸文濤;;基于變頻調速的煤礦帶式輸送機節(jié)能控制方法[J];電氣傳動;2013年11期

10 曾飛;吳青;初秀民;代超磊;;散貨碼頭帶式輸送機調速節(jié)能研究進展[J];制造業(yè)自動化;2013年17期

相關博士學位論文 前1條

1 王中華;礦井煤流輸送系統(tǒng)優(yōu)化控制關鍵技術研究[D];中國礦業(yè)大學;2014年

相關碩士學位論文 前4條

1 孫汪萍;長距離帶式輸送機節(jié)能優(yōu)化策略的研究[D];合肥工業(yè)大學;2015年

2 張沿江;帶式輸送機節(jié)能控制系統(tǒng)技術研究[D];西安科技大學;2014年

3 王廣闊;長距離帶式輸送機多電機驅動功率平衡的研究[D];合肥工業(yè)大學;2011年

4 馮寶廷;礦用大型帶式輸送機液粘可控軟啟動系統(tǒng)的研究[D];上海交通大學;2007年

，

本文編號：1647911