噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2013年
z1期
377-380
,共4页
声学%共振吸声结构%薄板%微穿孔板%户外变电站%噪声治理
聲學%共振吸聲結構%薄闆%微穿孔闆%戶外變電站%譟聲治理
성학%공진흡성결구%박판%미천공판%호외변전참%조성치리
acoustics%resonance sound-absorbing structure%sheet%micro-perforated plate%transformer substation%noise treatment
为治理变电站的低频噪声，根据共振吸声原理提出由薄板共振吸声结构和微穿孔板吸声结构构成的复合低频吸声结构，并利用土建阻抗管对复合吸声结构的垂直入射吸声系数进行测试并验证它的低频噪声吸声性能较好，即垂直入射吸声系数在100 Hz和200 Hz频率能达到0.8左右。对复合低频吸声体的研究对治理变电站的低频噪声具有实际意义。
為治理變電站的低頻譟聲，根據共振吸聲原理提齣由薄闆共振吸聲結構和微穿孔闆吸聲結構構成的複閤低頻吸聲結構，併利用土建阻抗管對複閤吸聲結構的垂直入射吸聲繫數進行測試併驗證它的低頻譟聲吸聲性能較好，即垂直入射吸聲繫數在100 Hz和200 Hz頻率能達到0.8左右。對複閤低頻吸聲體的研究對治理變電站的低頻譟聲具有實際意義。
위치리변전참적저빈조성，근거공진흡성원리제출유박판공진흡성결구화미천공판흡성결구구성적복합저빈흡성결구，병이용토건조항관대복합흡성결구적수직입사흡성계수진행측시병험증타적저빈조성흡성성능교호，즉수직입사흡성계수재100 Hz화200 Hz빈솔능체도0.8좌우。대복합저빈흡성체적연구대치리변전참적저빈조성구유실제의의。
In order to control low-frequency noise in the transformer substation, according to resonance sound absorption principle, this paper adopts low frequency sound absorption structure composed by sheet resonance sound-absorbing structure and micro-perforated plate sound absorbing structure. Besides, this paper does some tests of the vertical incidence to compound sound absorption structure by using civil impedance tube. During the test, low frequency sound-absorbing performance could be certificad and vertical incidence sound absorption coefficient could be up to 0.8 at 100 Hz and 200 Hz. This study has the practical significance on the treatment of low frequency noise in the transformer substation.
