發(fā)布時(shí)間：2018-04-25 15:37

  本文選題：皮帶機(jī) + 高壓噴霧�。� 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：在驅(qū)動(dòng)間內(nèi)設(shè)置多個(gè)皮帶拉緊裝置來(lái)保證皮帶具有足夠的拉伸張力，防止皮帶打滑。當(dāng)皮帶運(yùn)行時(shí)，在速度梯度和滾筒摩擦力的雙重作用下，就會(huì)使得大量的煤塵逸散到驅(qū)動(dòng)間內(nèi)，造成粉塵濃度超限，嚴(yán)重威脅煤礦的生產(chǎn)安全和工人的身體健康。隨著我國(guó)對(duì)環(huán)保問(wèn)題要求的日益增加，如何降低皮帶運(yùn)行過(guò)程中驅(qū)動(dòng)間粉塵濃度，，成為一個(gè)較為迫切的問(wèn)題。 本文應(yīng)用商業(yè)軟件Fluent作為計(jì)算平臺(tái)，采用歐拉-拉格朗日方法對(duì)粉塵場(chǎng)和液滴場(chǎng)進(jìn)行模擬，通過(guò)模擬可以直觀地看出在驅(qū)動(dòng)間皮帶機(jī)運(yùn)載煤料過(guò)程中粉塵的逸散規(guī)律和噴霧后的降塵效果，同時(shí)對(duì)噴嘴外流場(chǎng)液滴顆粒粒徑進(jìn)行曲線擬合，粒徑呈Rosin-Rammler分布，符合理論推導(dǎo)。 結(jié)合大唐錫林浩特礦業(yè)公司的實(shí)際情況，將研究成果在M106驅(qū)動(dòng)間進(jìn)行現(xiàn)場(chǎng)工程應(yīng)用，針對(duì)驅(qū)動(dòng)間內(nèi)不同產(chǎn)塵點(diǎn)的粉塵逸散規(guī)律，合理地設(shè)置噴霧地點(diǎn)及噴嘴個(gè)數(shù)，同時(shí)通過(guò)調(diào)節(jié)噴霧參數(shù)測(cè)定降塵效率，選出最優(yōu)噴霧參數(shù)。此研究成果對(duì)于煤礦其它產(chǎn)塵點(diǎn)具有很好的借鑒意義。
[Abstract]:A plurality of belt tensioning devices are arranged in the drive room to ensure that the belt has sufficient tension to prevent the belt from slipping. When the belt is running, under the action of velocity gradient and roller friction, a large amount of coal dust will dissipate into the driving room, resulting in the dust concentration exceeding the limit, which seriously threatens the safety of coal mine production and the health of workers. With the increasing requirement of environmental protection in our country, how to reduce the dust concentration in the driving zone becomes an urgent problem. In this paper, the dust field and droplet field are simulated by Euler-Lagrangian method on the basis of commercial software Fluent. Through simulation, we can intuitively see the law of dust dispersion and the effect of dust control after spraying in the course of carrying coal in the driving belt conveyor. At the same time, the particle size of droplet in the nozzle outflow field is fitted by curve, the particle size is Rosin-Rammler distribution, which is in accordance with the theoretical derivation. Combined with the actual situation of Datang Xilinhaote Mining Company, the research results were applied in the field engineering of M106 driving room. According to the dust dispersion law of different dust producing points in the driving room, the spray location and the number of nozzles were reasonably set up. At the same time, the optimal spray parameters were selected by adjusting the spray parameters to determine the dust reduction efficiency. This research result has the very good reference significance to the coal mine other dust production spot.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TD714.4

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