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id="ugsai2004i" class="sidebar_b_c"> 聯(lián)系人：徐經(jīng)理<br /> 手機：13961394867 <br /> 咨詢(xún)QQ：461991154 <br /> 郵箱：13861420950@163.com <br /> 地址：連云港海州區新壩鎮新北路1-38號 <br /> </div> </div> </div> <div id="ugsai2004i" class="inner-right">  <div id="ugsai2004i" class="title"> 新聞中心 <span id="ugsai2004i" class="weizhi"><a href="/">首頁(yè)</a> >> <a href="/article/">新聞中心</a> </span> </div> <div id="ugsai2004i" class="news-detail-content"> <div id="ugsai2004i" class="news-detail-title"> <div id="ugsai2004i" class="h3">阻性消聲器組合成阻抗復合式消聲器使用</div> <div id="ugsai2004i" class="b">發(fā)布時(shí)間：2024-02-21 瀏覽：72次</div> </div> <div id="ugsai2004i" class="news-detail"> <p><br/></p><p>　　當噪聲明顯為低中頻和脈動(dòng)特性時(shí)，或氣流通道內不應使用吸聲材料時(shí)，比如空氣壓縮機進(jìn)排氣口，發(fā)動(dòng)機排氣口管道等可選用擴張式消聲器。</p><p>　　(1)程序設計</p><p>　?、俑鶕枰南曨l率特性，合理的分布大消聲頻率，即合理的設計各節擴張率的長(cháng)度及其插入管的長(cháng)度。</p><p>　?、诟鶕枰南暳?，確定擴張比m設計擴張室部分尺寸。</p><p>　?、垓炈闼O計擴張室消聲器的上下截率是否在所需要的頻率范圍之外，如不符合則重新修改方案。</p><p>　　(2)消聲量擴張室消聲器消聲量取決于擴張比m與擴張室的長(cháng)度L，具體可由式計算。提高消聲量，可通過(guò)增加擴張比m，改變室長(cháng)L的方法來(lái)調節。</p><p>　　(3)消聲器設計在進(jìn)行消聲器的具體設計時(shí)，應注意以下幾方面。</p><p>　?、俨捎枚喙潝U張室式消聲器串聯(lián)的方法來(lái)增大消聲室時(shí)，各節擴張室的長(cháng)度設計為不相等的數值，使它們的通過(guò)頻率互相錯開(kāi)。</p><p>　?、跒榱双@得更高的消聲效果，通常幾節不同長(cháng)度的擴張室串聯(lián)的同時(shí)每節擴張室內分別插入內接管，其長(cháng)度分別等于室長(cháng)的1/2與1/4.為了改善消聲器的空氣動(dòng)力性能，通常穿孔率大于25%的穿孔管同擴張室的插入管連接起來(lái)。</p><p>　?、蹟U張室消聲器的內管管徑不宜過(guò)大，管徑超過(guò)400mm，可采用多管式消聲器。</p><p>　　擴張室消聲器屬于抗性消聲器，具有良好的低頻消聲性能，耐高溫，常在通風(fēng)或內燃機排氣消聲器中使用。但由于消聲頻帶窄，對中高頻消聲差，工程中常與阻性消聲器組合成阻抗復合式消聲器使用。</p><p><br/></p> </div> <div id="ugsai2004i" class="newsPage"> <div id="ugsai2004i" class="page-a">上一篇：<a 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