耐(nai)腐蝕(shi)化工泵是(shi)(shi)工業(ye)生(sheng)產(chan)(chan)中(zhong)(zhong)常用泵(beng)(beng)(beng)，用戶在(zai)(zai)(zai)選型(xing)后，安裝使用時，出現很大噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)是(shi)(shi)什么(me)原(yuan)因呢(ni)，有哪些方法降低噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)呢(ni)？水泵(beng)(beng)(beng)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)主要(yao)是(shi)(shi)氣體/液(ye)體在(zai)(zai)(zai)輸(shu)送過程中(zhong)(zhong)產(chan)(chan)生(sheng)的空氣動(dong)力噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)，電機(ji)(ji)機(ji)(ji)殼受振動(dong)激發的結構噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)，機(ji)(ji)座因振動(dong)產(chan)(chan)生(sheng)的噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)，以及電動(dong)機(ji)(ji)的噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)。此類噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)級(ji)峰值主要(yao)集中(zhong)(zhong)在(zai)(zai)(zai)低倍(bei)頻帶，大約在(zai)(zai)(zai)100-450Hz的范(fan)圍內。該聲(sheng)(sheng)(sheng)(sheng)源在(zai)(zai)(zai)泵(beng)(beng)(beng)房(fang)正常運行時屬(shu)于穩(wen)態噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)。管道(dao)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)是(shi)(shi)指水流在(zai)(zai)(zai)管道(dao)中(zhong)(zhong)流動(dong)時所產(chan)(chan)生(sheng)的噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)。另外，耐腐(fu)蝕化工泵的氣蝕現(xian)象(xiang)及(ji)停泵水錘現(xian)象(xiang)也能夠(gou)產(chan)生瞬時噪聲。給(gei)水管道產(chan)生的噪聲，受流(liu)速(su)和壓力(li)影響。

  泵房整套設施產生(sheng)的(de)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)主(zhu)要(yao)為機械噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)，目前聲(sheng)(sheng)(sheng)(sheng)(sheng)學原理上(shang)治理噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)的(de)方法較(jiao)常使用(yong)的(de)是控制噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)的(de)傳播途徑，主(zhu)要(yao)有(you)隔聲(sheng)(sheng)(sheng)(sheng)(sheng)、吸聲(sheng)(sheng)(sheng)(sheng)(sheng)、消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)等。隔聲(sheng)(sheng)(sheng)(sheng)(sheng)是利用(yong)隔聲(sheng)(sheng)(sheng)(sheng)(sheng)結(jie)構將聲(sheng)(sheng)(sheng)(sheng)(sheng)源與受聲(sheng)(sheng)(sheng)(sheng)(sheng)點隔開；吸聲(sheng)(sheng)(sheng)(sheng)(sheng)是利用(yong)吸聲(sheng)(sheng)(sheng)(sheng)(sheng)結(jie)構或吸聲(sheng)(sheng)(sheng)(sheng)(sheng)材(cai)料降低(di)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)；消(xiao)(xiao)聲(sheng)(sheng)(sheng)(sheng)(sheng)是利用(yong)阻抗(kang)(kang)、抗(kang)(kang)性、多孔(kong)擴散(san)等原理，降低(di)噪(zao)(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)量值。

噪聲控(kong)制(zhi)措施應(ying)根據聲學(xue)原理，盡量充分利用(yong)場地環(huan)境和條(tiao)件如下： 

1.控(kong)制機器設(she)備和設(she)備零件產(chan)生(sheng)的(de)噪聲。新建(jian)泵(beng)房(fang)水(shui)泵(beng)基礎宜采用重量大的(de)，防止(zhi)振(zhen)(zhen)動產(chan)生(sheng)噪聲。而且(qie)應(ying)設(she)橡膠隔(ge)(ge)振(zhen)(zhen)墊等(deng)進行(xing)隔(ge)(ge)振(zhen)(zhen)，從(cong)而減少振(zhen)(zhen)動的(de)噪聲；每個水(shui)泵(beng)機組單獨設(she)置基礎，防止(zhi)產(chan)生(sheng)共振(zhen)(zhen)。在(zai)耐(nai)腐(fu)蝕泵吸(xi)、壓(ya)水管(guan)上盡可(ke)能的采用“軟性(xing)”聯結。定(ding)期檢修，發(fa)生(sheng)問題如盤根(gen)漏水、設(she)備零(ling)件(jian)(jian)松動，設(she)備零(ling)件(jian)(jian)磨損嚴重、機械振動等應及時(shi)維修，從而減少(shao)噪(zao)聲。

2.根(gen)據泵(beng)(beng)房環境，將聲源(yuan)封閉不嚴密(mi)的泵(beng)(beng)房進行隔音(yin)處理，將耐腐蝕(shi)泵泵(beng)房產生噪聲(sheng)的(de)房間采(cai)取吸聲(sheng)/隔(ge)(ge)聲(sheng)處理，門窗也要(yao)做(zuo)隔(ge)(ge)音處理等。

  由于不同(tong)廠(chang)家和類型的(de)化工泵，工(gong)作原理和結(jie)構都(dou)會有差異，所以(yi)，對噪聲源進行現場(chang)勘測和分析對泵房隔音降噪方案(an)的設(she)計(ji)和材(cai)料(liao)的選擇都(dou)十分重(zhong)要。

-THE END-

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