【摘 要】
：
由我公司承建的某电厂2×350 MW超临界火力发电机组,属于超临界参数运行的火电机组,锅炉主要参数为:过热蒸汽流量1180 t/h、过热蒸汽出口压力及温度25.4 MPa/571℃、再热蒸汽
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由我公司承建的某电厂2×350 MW超临界火力发电机组,属于超临界参数运行的火电机组,锅炉主要参数为:过热蒸汽流量1180 t/h、过热蒸汽出口压力及温度25.4 MPa/571℃、再热蒸汽出口压力及温度4.42 MPa/569℃、给水温度288℃。锅炉的屏式过热器出口集箱管排焊缝属于小径管密集型成排焊缝,材质为SA213-T91,18只焊缝/每排,管子间距只有8 mm,整个管
The 2 × 350 MW supercritical thermal power unit constructed by our company belongs to the thermal power unit operating under supercritical parameters. The main parameters of the boiler are: superheated steam flow rate of 1180 t / h, superheated steam outlet pressure and temperature of 25.4 MPa / 571 ℃ , Reheat steam outlet pressure and temperature 4.42 MPa / 569 ℃, feed water temperature 288 ℃. Panel boiler superheater outlet header row weld belongs to the small-diameter tube-intensive rows of welding, material SA213-T91, 18 welds / row, the tube spacing of only 8 mm, the entire tube
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