針對國外已運行和國內(nèi)在建的1 000MW超超臨界機(jī)組給水泵選型情況,考慮到1 000MW高效率的超超臨界參數(shù)機(jī)組電廠將來在電力系統(tǒng)中主要承擔(dān)基本負(fù)荷,在保證機(jī)組運行安全、可靠的前提下,通過對主給水泵的型式、容量及啟動/備用給水泵的配置進(jìn)行技術(shù)經(jīng)濟(jì)比較后,建議采用2 ×50%BMCR容量汽動給水泵和25% ～30%的定速啟動泵,提高運行的熱經(jīng)濟(jì)性和運行的可靠性,并降低工程投資。
[關(guān)鍵詞] 　超超臨界機(jī)組　汽動給水泵　電動給水泵　型式　容量

[ Abstract] 　Pointing to situation of feed pump model used for 1 000 MW extra supercritical ( ESC) units under operation abroad and under
construction in China, considering that the power p lants of 1 000MW ESC unitswill bear the basic load in the system, 2 ×50%BMCR turbine
driving feed pump s and 25%～30% fixed - speed startup pump s are recommended after technical economical comparison ofmodel and capacity
of the main feed pump s, configuration of startup / standby feed pump s in the conditions to ensure the safe and reliable operation of the units. The
p revious arrangement can increase the thermal economy and reliability of operation and reduce the investment on the p roject.
[ Keywords] 　extra supercritical unit; turbine - driving feed pump; motor - driven feed pump; model; capacity