现代制造工程
現代製造工程
현대제조공정
MODERN MANUFACTURING ENGINEERING
2014年
5期
10-15
,共6页
李晓豁%董伟松%杨杰%王金兴%周洋
李曉豁%董偉鬆%楊傑%王金興%週洋
리효활%동위송%양걸%왕금흥%주양
集尘器%四角旋流%喷嘴%降尘效果
集塵器%四角鏇流%噴嘴%降塵效果
집진기%사각선류%분취%강진효과
dust collector%four corners cyclone%nozzle%dust fall result
为提高现有矿用负压集尘器的降尘效率、改善采掘工作面环境和安全状况,针对该集尘器存在的问题,提出一种四角旋流布置喷嘴的负压集尘器,分析确定了其喷嘴的布置参数,对反映降尘效果的降尘效率、耗水量进行了计算分析,通过建立气-液-固三相湍流流动的E/E/L模型,运用CFD软件对原结构及新型结构集尘器进行了模拟和比较分析。研究表明:新型结构布置的集尘器对2μm以上的粉尘降尘效率达90%,比原集尘器提高5%,1μm以下粉尘的降尘效率为原结构的1.2倍;在降尘效率达90%时,耗水量仍满足要求;该集尘器雾滴与粉尘相对速度为原结构的1.29倍,雾滴空间充满度高、射程大。
為提高現有礦用負壓集塵器的降塵效率、改善採掘工作麵環境和安全狀況,針對該集塵器存在的問題,提齣一種四角鏇流佈置噴嘴的負壓集塵器,分析確定瞭其噴嘴的佈置參數,對反映降塵效果的降塵效率、耗水量進行瞭計算分析,通過建立氣-液-固三相湍流流動的E/E/L模型,運用CFD軟件對原結構及新型結構集塵器進行瞭模擬和比較分析。研究錶明:新型結構佈置的集塵器對2μm以上的粉塵降塵效率達90%,比原集塵器提高5%,1μm以下粉塵的降塵效率為原結構的1.2倍;在降塵效率達90%時,耗水量仍滿足要求;該集塵器霧滴與粉塵相對速度為原結構的1.29倍,霧滴空間充滿度高、射程大。
위제고현유광용부압집진기적강진효솔、개선채굴공작면배경화안전상황,침대해집진기존재적문제,제출일충사각선류포치분취적부압집진기,분석학정료기분취적포치삼수,대반영강진효과적강진효솔、모수량진행료계산분석,통과건립기-액-고삼상단류류동적E/E/L모형,운용CFD연건대원결구급신형결구집진기진행료모의화비교분석。연구표명:신형결구포치적집진기대2μm이상적분진강진효솔체90%,비원집진기제고5%,1μm이하분진적강진효솔위원결구적1.2배;재강진효솔체90%시,모수량잉만족요구;해집진기무적여분진상대속도위원결구적1.29배,무적공간충만도고、사정대。
In order to raise the efficiency of mining negative pressure dust collector ,improve the environment and safety of the ex-traction face,a four corners-setting of nozzle for the dust collector was put forward ,the parameters of nozzle arrangement was ana-lysed,the efficiency of dust fall and consumption of water which reflect the effect of dust fall was calculated ,the E/E/L model of turbulent flow for gas-liquid-solid of the original and new structure was established and simulated by means of CFD software .The results show that the dust fall efficiency was up to 90% when dust particle size more than 2μm for the new structure and 5%higher than that of the original dust collector ,and which was 1.2 times of the original structure when the dust particle size below 1μm;meanwhile ,new structure was also meet the requirement of water consumption when the dust fall efficiency up to 90%;the droplets full of space ,large range and which relative speed with dust was 1.29 times of the original structure .