本文選題：雙層微穿孔板吸聲結(jié)構(gòu)　切入點(diǎn)：吸聲系數(shù)　出處：《暖通空調(diào)》2016年11期

【摘要】：空調(diào)通風(fēng)系統(tǒng)噪聲是核電廠主控制室噪聲的主要來(lái)源。通過(guò)主控制室噪聲預(yù)測(cè)分析,提出主控制室降噪需要開(kāi)發(fā)符合核電廠使用環(huán)境要求,且具有良好寬頻消聲性能的新型凈化消聲器。在雙層微穿孔板吸聲結(jié)構(gòu)設(shè)計(jì)的基礎(chǔ)上,研發(fā)了適用于核電通風(fēng)系統(tǒng)的新型消聲器,并對(duì)樣機(jī)的聲學(xué)性能和空氣動(dòng)力性能進(jìn)行了數(shù)值分析和實(shí)驗(yàn)驗(yàn)證。結(jié)果表明,新型消聲器消聲量的插入損失在設(shè)計(jì)頻率下均達(dá)到25dB以上,其壓力損失在設(shè)計(jì)工況下滿足設(shè)計(jì)要求,且低于傳統(tǒng)阻性消聲器。
[Abstract]:The noise of air conditioning and ventilation system is the main source of noise in the main control room of nuclear power plant.Through the prediction and analysis of the noise in the main control room, it is pointed out that the noise reduction in the main control room needs to develop a new type of purifying muffler which meets the environmental requirements of the nuclear power plant and has a good performance of wide-band noise suppression.A new type of muffler suitable for nuclear power ventilation system is developed on the basis of the sound absorption structure design of double-layer microperforated plate. The acoustic and aerodynamic performances of the prototype are numerically analyzed and verified by experiments.The results show that the insertion loss of the new muffler is above 25dB at the design frequency, and its pressure loss meets the design requirements under the design condition, and is lower than that of the traditional resistive muffler.
【作者單位】： 上海核工程研究設(shè)計(jì)院;
【分類號(hào)】：TU834

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本文編號(hào)：1710586