无码国产69精品久久久孕妇_日韩精品内射视频免费观看_极品少妇扒开粉嫩小泬视频_宝贝扒开下面自慰给我看

隨著人們越來越注重身心健康，噪音治理行業在近幾年來也成為了一個熱門行業，那么今天西安噪音治理公司教您如何降低空壓機排氣口噪音。

排(pai)(pai)氣(qi)(qi)(qi)壓力(li)高、流(liu)量(liang)大(da)的(de)空壓機因產生的(de)排(pai)(pai)氣(qi)(qi)(qi)噪聲(sheng)(sheng)較高，在排(pai)(pai)氣(qi)(qi)(qi)系統需要(yao)設置專用的(de)消(xiao)聲(sheng)(sheng)器進行(xing)控制。排(pai)(pai)氣(qi)(qi)(qi)口消(xiao)聲(sheng)(sheng)器要(yao)求(qiu)消(xiao)聲(sheng)(sheng)量(liang)大(da)，消(xiao)聲(sheng)(sheng)頻段(duan)寬，具(ju)有減壓擴容，減小排(pai)(pai)氣(qi)(qi)(qi)放空的(de)壓力(li)落差的(de)作用，以降(jiang)低排(pai)(pai)氣(qi)(qi)(qi)放空噪聲(sheng)(sheng)。

對于流量(liang)小于20m3/min空壓(ya)機，噪聲(sheng)不高且(qie)主要(yao)為高頻(pin)，一般可采用阻性(xing)消聲(sheng)器。阻性(xing)消聲(sheng)器的優點是(shi)能在(zai)較(jiao)寬的中(zhong)高頻(pin)范圍(wei)內消聲(sheng)，特別(bie)對(dui)高頻(pin)聲(sheng)波有突出的消聲(sheng)作(zuo)用。阻性(xing)消聲(sheng)器利用氣(qi)流管道內不同結構形式的多孔吸聲(sheng)材料(常稱(cheng)阻性材料)吸收聲能，降低噪(zao)聲的消(xiao)(xiao)聲器(qi)(qi)，是各類(lei)消(xiao)(xiao)聲器(qi)(qi)中形式最多、應用(yong)最廣的一(yi)種消(xiao)(xiao)聲器(qi)(qi)，且具(ju)有較(jiao)寬的消(xiao)(xiao)聲頻率范圍，在中、高(gao)頻率段消(xiao)(xiao)聲性(xing)能尤為(wei)顯著。阻性(xing)消(xiao)(xiao)聲器(qi)(qi)有下列(lie)幾種類(lei)型：管(guan)式消(xiao)(xiao)聲器(qi)(qi)、彎頭式消(xiao)(xiao)聲器(qi)(qi)、小(xiao)室式消(xiao)(xiao)聲器(qi)(qi)式、圓盤式消(xiao)(xiao)聲器(qi)(qi)。

但對(dui)于(yu)排氣壓力高(gao)和流量大的(de)空(kong)壓機，由(you)于(yu)噪聲(sheng)(sheng)(sheng)(sheng)聲(sheng)(sheng)(sheng)(sheng)壓級較(jiao)(jiao)大，既(ji)有(you)中(zhong)(zhong)低(di)頻(pin)噪聲(sheng)(sheng)(sheng)(sheng)又有(you)高(gao)頻(pin)噪聲(sheng)(sheng)(sheng)(sheng)，僅靠(kao)阻性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器效果是不理想(xiang)的(de)，復(fu)(fu)(fu)合(he)(he)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器是解(jie)決問(wen)題(ti)的(de)有(you)效途(tu)徑，復(fu)(fu)(fu)合(he)(he)式(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器的(de)形(xing)式(shi)(shi)有(you)：阻抗復(fu)(fu)(fu)合(he)(he)式(shi)(shi)，阻性(xing)及(ji)(ji)(ji)共振復(fu)(fu)(fu)合(he)(he)式(shi)(shi)，抗性(xing)及(ji)(ji)(ji)微穿孔板復(fu)(fu)(fu)合(he)(he)式(shi)(shi)等。復(fu)(fu)(fu)合(he)(he)式(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器綜(zong)合(he)(he)前種優點，由(you)于(yu)阻性(xing)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器雖有(you)優良的(de)中(zhong)(zhong)高(gao)頻(pin)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)性(xing)能(neng)(neng)，而低(di)頻(pin)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)性(xing)能(neng)(neng)則較(jiao)(jiao)差(cha)，且難以提高(gao)，而擴(kuo)張(zhang)式(shi)(shi)及(ji)(ji)(ji)共振式(shi)(shi)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)器則相反，在(zai)低(di)中(zhong)(zhong)頻(pin)具有(you)較(jiao)(jiao)好的(de)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)性(xing)能(neng)(neng)，高(gao)頻(pin)消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)效果一(yi)般(ban)都較(jiao)(jiao)差(cha)。

若將阻性(xing)與抗性(xing)兩種消聲(sheng)(sheng)(sheng)(sheng)原理合成一種消聲(sheng)(sheng)(sheng)(sheng)器，就可在(zai)較寬的頻率范圍(wei)內得到滿意的消聲(sheng)(sheng)(sheng)(sheng)效(xiao)果(guo)。這種消聲(sheng)(sheng)(sheng)(sheng)器有(you)共振腔(qiang)、擴張(zhang)室、穿孔(kong)屏等聲(sheng)(sheng)(sheng)(sheng)學濾波(bo)元件(jian)又有(you)孔(kong)吸聲(sheng)(sheng)(sheng)(sheng)材料，對不(bu)同頻率的噪聲(sheng)(sheng)(sheng)(sheng)均(jun)有(you)消聲(sheng)(sheng)(sheng)(sheng)作用。