矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2013年
4期
43-45,49
,共4页
对旋式局部通风机%噪声%频谱%移频%消声器
對鏇式跼部通風機%譟聲%頻譜%移頻%消聲器
대선식국부통풍궤%조성%빈보%이빈%소성기
contra-rotating auxiliary fan%noise%frequency spectrum%frequency shifting%muffler
分析了对旋式局部通风机的主要噪声源,指出了A声级对噪声评价的不足,并对对旋式局部通风机噪声频率进行了分析研究,根据各频段频谱特性,采用移频技术,合理设计消声器,达到了真正降噪的目的。
分析瞭對鏇式跼部通風機的主要譟聲源,指齣瞭A聲級對譟聲評價的不足,併對對鏇式跼部通風機譟聲頻率進行瞭分析研究,根據各頻段頻譜特性,採用移頻技術,閤理設計消聲器,達到瞭真正降譟的目的。
분석료대선식국부통풍궤적주요조성원,지출료A성급대조성평개적불족,병대대선식국부통풍궤조성빈솔진행료분석연구,근거각빈단빈보특성,채용이빈기술,합리설계소성기,체도료진정강조적목적。
In this paper, the deficiency of using A sound level for noise evaluation was pointed out and analysis was carried out on the noise frequency of the mine contra-rotating auxiliary fan. Based on the frequency spectrum characteristics of each band, a muffler was rationally designed with frequency shifting technology, and the true purpose of noise reduction was finally achieved.