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针对目前国内使用最为广泛的300 MW机组凝汽器,采用具有分布阻力和分布质量汇的多孔介质模型,数值研究了菱型、卵型、将军帽型、双峰型等典型布管凝汽器的性能,比较了不同布管形式凝汽器的壳侧压降和抽气量,总结出了凝汽器布管的一些基本原则,如管束外形以窄长锲型或山峰形为好、外围应设置辅助进汽通道、需要设置渐缩型空冷区等。
Aiming at the most widely used condenser of 300 MW unit in China, the porous medium model with distributed resistance and mass distribution is used to study the performance of typical pipe condenser such as rhombic, ovum, general cap and bimodal The comparison of the shell side pressure drop and the extraction volume of different condenser tubes in the form of pipelines summarizes some basic principles of condenser tubes. For example, the shape of the tube bundle should be of a long and narrow wedge shape or a mountain shape, and the periphery should be Set the auxiliary intake channel, you need to set the tapered air-cooled zone.