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我国1 000 MW超超临界机组主要有上汽-SIEMENS机型、东汽-日立机型及哈汽-东芝机型。超超临界机组在低负荷时能滑压运行,故有良好的低负荷运行性能,其主汽压力可随着负荷的降低而降低。1 000 MW超超临界机组锅炉一般采用八角双切圆燃烧或前后墙对冲燃烧方式,主要采用Π型布置和塔式布置。汽轮发电机组采用四缸四排汽,单轴布置。
China’s 1 000 MW ultra-supercritical units are mainly SAIC-SIEMENS models, Dongfeng - Hitachi models and Ha-Toshiba models. The ultra-supercritical unit can run smoothly under low load, so it has a good low-load operating performance. Its main steam pressure can be reduced as the load decreases. 1 000 MW ultra-supercritical boilers generally use octagonal bisexual circular combustion or front and rear wall hedge combustion, the main use of Π-type layout and tower layout. Turbine uses four-cylinder four-row steam, single-axis layout.