汽轮机高位布置辅机冷却水系统优化

Optimization of the Auxiliary Cooling Water System of the High-level Steam Turbine

汽轮发电机组高位布置是燃煤发电机组的新型布置方案,与现有燃煤机组的空间结构存在较大的差异。为保障和提升高位布置辅机冷却水系统性能,按照功能与布置结构将辅机冷却水系统分为4个耦合的子系统,采用APROS软件建立了辅机冷却水系统模型,对高位布置辅机冷却水系统进行了优化设计,并将原系统与改进系统进行了定量对比和动态特性分析。结果表明:改进系统可降低辅机工作温度,节点温度峰值保持在65℃以下,冷却可靠性大幅提升。

The elevated configuration of a steam turbine generator set represents an innovative paradigm for coal-fired power generation,markedly deviating from the spatial structure inherent in conventional coal-fired units.In order to ensure and elevate the performance of the cooling water system for high-level arrangement auxiliary machinery,the auxiliary machinery cooling water system was classified into four interrelated subsystems based on functional and layout considerations.Requiring the utilization of APROS software,a meticulous model of the auxiliary machinery cooling water system was established.Subsequent to an optimization of the high-level arrangement auxiliary machinery cooling water system,a rigorous quantitative comparison and dynamic characteristic analysis were conducted between the original and enhanced systems.Outcomes delineate that the improved system effectuates a reduction in auxiliary machinery operating temperatures,with peak node temperatures consistently maintained below 65℃,thereby substantially amplifying cooling reliability.