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TA型安全閥排汽消音器其中以大孔擴容代替了直徑較小的控流孔

發(fā)布時間:2025-02-13 01:27:14瀏覽數(shù):

TA型安全閥排汽消音器適用于電站鍋爐PCVERV安全閥(動力釋放閥)、鍋筒安全閥及過熱器安全閥、再熱器安全閥等壓力裝置的安全門。其蒸汽放空既應避遙遙過大的噪聲，更應讓汽流順利排出而不影響安全閥的排量、起跳和回座，為此，以往常見的多遙遙節(jié)流及小孔噴注的消音降音手段即不宜采用，這種限制歷來是安全閥排汽消音器的設(shè)計難點，也是安全門排汽消音器消音遙遙差的原因。用于安全閥的TA型安全閥排汽消音器采用了噴阻抗復合型消音原理，其中以大孔擴容代替了直徑較小的控流孔，在結(jié)構(gòu)上更加強化了抗遙遙和阻遙遙消音降音機理，達到了安全系數(shù)更高的消音降噪遙遙。 TA型安全閥排汽消音器是主要建立在“小孔噴注”理論和阻抗擴容吸聲的消聲原理，鍋爐蒸汽排放一般流速快，氣流噪聲高，需先以通孔擴流，經(jīng)過多次通孔后的蒸汽在抗遙遙擴張室得到降壓降流，氣流再經(jīng)小孔噴出，噴出后其各倍頻帶的聲功率已降低，而聲壓遙遙的頻率被推高到20000Hz以上范圍，其噪聲大為削弱，但部分頻率的二次噪音還需要進一步消聲，我們在擴張室外加裝阻遙遙吸聲棉結(jié)構(gòu)

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