本文選題：乳化液 + 過濾��； 參考：《太原理工大學(xué)》2017年碩士論文

【摘要】：乳化液供液系統(tǒng)為液壓支架供應(yīng)高壓乳化液,其合理、可靠、高效運轉(zhuǎn)對采煤工作面的安全、可靠、高效生產(chǎn)有重要影響。當(dāng)前,供液系統(tǒng)主要存在乳化液清潔度低,單臺高壓大流量乳化液泵無法滿足高產(chǎn)高效工作面對乳化液的流量需求,供液方案不夠經(jīng)濟、合理等問題。針對以上問題,本文設(shè)計了一套集成多級過濾及多泵聯(lián)合供液功能的乳化液箱,并對供液過程及供液方案進行了研究。為了提高乳化液清潔度,在乳化液箱上集成了由片式濾網(wǎng)、吸液過濾器、高壓過濾器、回液過濾器、污水過濾器等組成的多級過濾系統(tǒng),對吸液過濾器及回液過濾器的自動反沖洗原理及濾芯參數(shù)進行了設(shè)計,并使用Solid Works建立了供液箱的三維模型。由于單泵難以滿足高產(chǎn)高效工作面對乳化液的流量需求,本文設(shè)計了一款可用于實現(xiàn)多泵聯(lián)合供液的集液器,并使用Fluent軟件對單泵、雙泵及三泵供液時集液器內(nèi)的流場進行了仿真研究。仿真結(jié)果表明,同時供液的泵越多,乳化液通過集液器時的壓降越大;雙泵或三泵聯(lián)合供液時,乳化液通過集液器時的壓降主要發(fā)生在集液器出口段。為合理設(shè)計集液器出口段直徑,本文對出口直徑為38mm、45mm、50mm、60mm時集液器內(nèi)部流場進行了分析。結(jié)果表明,隨著集液器出口段直徑增大,乳化液流過集液器的壓力損失呈降低趨勢,但當(dāng)集液器出口直徑大于50mm時,繼續(xù)增大集液器出口直徑,壓力損失只有輕微的減小。因此,將集液器出液口尺寸設(shè)計為50mm較為合理。為解決供液方案不夠合理的問題,本文通過數(shù)學(xué)建模及AMESim仿真對供液過程進行了研究,分析了不同的卸荷閥調(diào)定卸荷壓力、調(diào)定卸荷壓力與恢復(fù)壓力差值、蓄能器容量及供液流量對支架不同動作時的供液過程的影響。研究結(jié)果表明,調(diào)定卸荷壓力、調(diào)定卸荷壓力與恢復(fù)壓力差值、蓄能器容量對支架動作速度影響很小,但是增大調(diào)定卸荷壓力與恢復(fù)壓力差值或蓄能器容量可降低支架不用液時或者用液量小時卸荷閥重復(fù)卸荷、加載的頻率;供液流量對支架升柱的快速性及初撐力的保障有很大影響,在不超過支架升柱實際流量需求時,供液流量越大,支架完成升柱并達到初撐力所需時間越短;但是若供液流量繼續(xù)增大并超過支架升柱實際流量需求時,不但不能有效加快支架動作速度,反而會導(dǎo)致卸荷閥頻繁動作;在單個支架降柱、推溜、移架時,由于流量需求較小及蓄能器的充放液作用,在一定范圍內(nèi)調(diào)節(jié)泵供液流量對支架動作快速性影響很小,但若供液流量過大同樣會導(dǎo)致卸荷閥頻繁動作。最后,討論了當(dāng)前主流供液方案存在的優(yōu)缺點,提出了一種基于支架動作識別實現(xiàn)流量匹配的供液方案,并對基于卸荷閥的供液方案、變頻恒壓供液方案及基于支架動作識別實現(xiàn)流量匹配的供液方案等三種供液方案進行了仿真分析及仿真結(jié)果對比。結(jié)果表明,基于支架動作識別實現(xiàn)流量匹配的供液方案不但很好地結(jié)合了基于卸荷閥供液方案及變頻恒壓供液方案的優(yōu)點,同時避免了基于卸荷閥供液方案及變頻恒壓供液方案的缺點,展示了基于支架動作識別實現(xiàn)流量匹配的供液方案的合理性及優(yōu)勢。
[Abstract]:The emulsion supply system provides high pressure emulsion for hydraulic support. It is reasonable and reliable. The efficient operation has important influence on the safety, reliability and high efficiency of the coal mining face. At present, the liquid system mainly exists the low cleanliness of the emulsion, and the single high pressure and large flow emulsion pump can not meet the flow requirement of the emulsion with high yield and high efficiency. The solution of liquid supply is not economical and reasonable. In view of the above problems, a set of emulsion boxes with integrated multi-stage filtration and multi pump combined fluid supply are designed, and the liquid supply process and solution are studied. In order to improve the cleanliness of the emulsion, a sheet filter, a suction filter and a high pressure filter are integrated on the emulsion box. The multi-stage filtration system, such as the liquid filter and the sewage filter, has been designed for the automatic backwashing principle and filter core parameters of the suction filter and the back liquid filter, and a three-dimensional model of the liquid supply box is established by using Solid Works. The fluid can be used to realize the fluid collector with multi pump combined fluid supply, and the flow field in the liquid collector of single pump, double pump and three pump is simulated with Fluent software. The simulation results show that the more pump of the liquid supply, the greater the pressure drop of the emulsion through the liquid collector; the pressure of the emulsion through the liquid collector when the double or three pump is combined. In order to rationally design the outlet section diameter of the liquid collector, the flow field in the liquid collector is analyzed in this paper for the outlet diameter of 38mm, 45mm, 50mm and 60mm. The results show that the pressure loss of the liquid collector is decreased with the increase of the diameter of the outlet section of the liquid collector, but the outlet diameter of the collector is greater than 5. At 0mm, the outlet diameter of the collector is increased and the pressure loss is only slightly reduced. Therefore, the design of the liquid outlet size of the liquid collector is more reasonable. In order to solve the problem that the solution is not reasonable enough, this paper studies the liquid supply process through mathematical modeling and AMESim simulation, and analyzes the pressure of different unloading valves to adjust and load the unloading pressure and adjust the unloading pressure. The difference between the unloading pressure and the recovery pressure, the accumulator capacity and the flow rate of the feed flow on the feeding process during the different movements of the support. The results show that the difference between the unloading pressure and the unloading pressure and the recovery pressure is adjusted, and the accumulator capacity has little effect on the operating speed of the support, but the difference between the pressure adjustment and the recovery pressure difference is increased. The accumulator capacity can reduce the load frequency and the loading frequency, which can greatly influence the speed of the lift column and the support of the initial bracing force. The longer the flow rate is, the shorter the time required for the support to complete the lifting column and reach the initial brace force. But if the flow rate continues to increase and exceeds the actual flow demand of the support column, it can not only speed up the movement speed of the support, but will lead to the frequent action of the unloading valve. In a certain range, the flow flow of the pump is adjusted to the support of the pump for the smaller flow demand and the charge and discharge action of the accumulator. The effect of the movement speediness is very small, but if the flow rate is too large, the discharge valve will be frequently operated. Finally, the advantages and disadvantages of the current main flow scheme are discussed, and a solution for the flow matching based on the support action recognition is put forward, and the scheme of the liquid supply based on the unloading valve, the scheme of the variable frequency constant pressure feeding and the support based on the support are also given. The simulation analysis and simulation results are compared between the three schemes of fluid supply scheme, such as the action recognition to realize the flow matching scheme. The results show that the flow matching scheme based on the support action recognition not only combines the advantages of the fluid supply scheme based on the unloading valve and the variable frequency constant pressure water supply scheme, but also avoids the unloading valve based on the unloading valve. The shortcomings of the liquid supply scheme and the variable frequency constant pressure liquid feeding scheme show the rationality and advantages of the flow matching liquid supply scheme based on the bracket action recognition.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD355.4

【參考文獻】

相關(guān)期刊論文 前10條

1 付翔;王然風(fēng);袁繼成;董志勇;;煤礦乳化液泵變頻/工頻切換控制[J];工礦自動化;2017年01期

2 李然;;礦用高壓大流量乳化液泵站應(yīng)用現(xiàn)狀及發(fā)展趨勢[J];煤炭科學(xué)技術(shù);2015年07期

3 郭秀榮;梁中鈺;杜丹豐;亓占豐;李明寶;劉躍雄;;基于阻力的齒輪型木纖維尾氣微粒捕集器濾芯設(shè)計及試驗[J];農(nóng)業(yè)工程學(xué)報;2015年05期

4 李然;王偉;蘇哲;;高壓大流量乳化液泵滑動軸承熱流體動力潤滑仿真分析[J];煤炭學(xué)報;2014年S2期

5 宋杰;馬馳;;高壓大流量乳化液泵站系統(tǒng)設(shè)計[J];煤炭工程;2014年09期

6 王志高;吳金剛;宋彥龍;亓秀瑩;彭文博;張宏;;氣液兩相流強化陶瓷膜過濾煤炭礦井水的研究[J];水處理技術(shù);2014年04期

7 郭冰菁;聶辰鵬;李閣強;;高水基高壓大流量安全閥氣蝕的研究[J];液壓與氣動;2014年04期

8 暢軍亮;趙繼云;李亞麗;;液壓支架高壓大流量安全閥動態(tài)特性研究[J];液壓與氣動;2014年04期

9 王國法;李占平;;大采高工作面乳化液泵站變頻驅(qū)動方式優(yōu)化設(shè)計[J];煤炭科學(xué)技術(shù);2014年04期

10 李然;王偉;蘇哲;;高壓大流量乳化液泵曲軸疲勞強度分析[J];煤礦開采;2014年01期

相關(guān)碩士學(xué)位論文 前5條

1 蔡海龍;智能型乳化液自動供配液系統(tǒng)的研究與實現(xiàn)[D];太原理工大學(xué);2015年

2 石高亮;大流量液控單向閥設(shè)計及實驗研究[D];中國礦業(yè)大學(xué);2015年

3 陳克鑫;基于FLUENT的固井單向閥流場仿真與性能分析[D];哈爾濱工業(yè)大學(xué);2012年

4 賀志凱;立柱液控單向閥的仿真分析與流場可視化研究[D];太原理工大學(xué);2012年

5 宋建勛;乳化液自動反沖洗高壓過濾站的設(shè)計與仿真[D];太原理工大學(xué);2011年

，

本文編號：1926702