消聲器的消聲原理_行業知識_連云港晨源環?？萍加邢薰?/title> <meta name="description" content="消聲器的消聲原理"> <meta name="keywords" content="消聲器的消聲原理"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1"> <meta name="applicable-device" content="pc"> <meta name="apple-mobile-web-app-title" content="你必須要知道的消聲器的消聲原理"> <meta name="application-name" content="連云港晨源環?？萍加邢薰?> 一是利用管道截面突變(即聲抗的變化)使沿管道傳播的聲波向聲源方向反射回去，從而使聲能反射回原處；<br/>二是利用幾個界面的反射，使原來個向前傳播的聲波又回到原點，并再次折回向前傳播，該點與尚未被反射的第二個向前傳播的聲波匯合，而且兩者在振幅上相等，在相位上差180度的奇數倍，從而互相干涉而抵消。<br/>風機式<br/>主要適用于降低羅茨系列、軸流系列風機的進排氣噪聲，也可以用于對排氣管道及其它高壓風機的降噪，消聲量15-30dB（A），壓力損失少于500Pa。<br/>阻抗聲流型通風、排氣管道及風機消聲器結構原理大噪聲級時，其頻譜值往往不止一種，而對不同頻譜帶，對其消聲量要求也不相同。為此系列通風管道消音器及鼓引風機消聲器均為阻抗聲流型，采用了對高、中頻噪聲起吸音消聲作用的阻式結構及對中、低頻噪聲起消聲降音作用的抗式結構，同時在阻式通道中采用了高頻及低頻兩種吸音消聲區，用以大限度的增寬消聲頻帶，以實現良好的消聲降噪效果根據對工業用各類風機運行現場噪聲源進行實際測試所取得的頻譜特性資料來確定在哪些頻譜范圍內需要多大消聲量作為設計吸聲體及流體通道的主要依據，同時采用了具有較大吸聲材料飾面的狹矩形通道，以增強吸收效果。另，風機的噪聲源在排汽式</p><p> 鍋爐點火<strong>排汽消聲器</strong>（TB）型為抑制高壓汽流排放噪聲，當前世界上已具有多種形式的的消聲器，其原理大多采用多級節流降壓，由于其結構復雜、重量大、難以解體檢修，因而限制了其應用范圍。本新型結構的消聲器克服了上述缺點。<br/>本型排汽消聲器系綜合了合理的消聲原理所設計。高壓蒸汽在排汽消聲器內經一次控流后進入降壓體經大容積擴壓后，往往會因排汽偏離設計值等諸原因，使噪聲仍然高于標準值。為此，在降壓體外設計了一只雙層結構的阻聲罩，它系根據降壓體所發出的剩余噪聲的頻譜特性所是設計，用以有效地吸收剩余噪聲。當用戶按要求安裝后，總噪聲量要達36～42分貝。</p><p><br/></p><p><br/></p><p> </p></div> <div class="prevNext"> <p class="prev">上一條: <a href="http://www.chakyan-medicalgroup.com/industry-85009">消音器主要是利用多孔吸聲材料來降低噪聲的</a></p> <p class="next">下一條: <a href="http://www.chakyan-medicalgroup.com/industry-85001">消聲器的適用領域</a></p> </div> <div class="clear"></div> <div class="rnews clearfix"> <h3>相關行業知識</h3> <ul> <li><a href="http://www.chakyan-medicalgroup.com/industry-84892" target="_blank">風機消聲器分為圓形結構和矩形結構</a></li><li><a href="http://www.chakyan-medicalgroup.com/industry-84897" target="_blank">不同作用的鍋爐消聲器的幾大分類</a></li><li><a href="http://www.chakyan-medicalgroup.com/industry-84924" target="_blank">風機消聲器主要用于降低噪聲</a></li><li><a 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