海上浮动式核电站汽轮发电机组方案设计与应用  

Design and Applilation of Steam Turbine Generator Units for Floating Nuclear Power Plant

作　　者：罗贤勇 施海云 吴家凯 LUO Xianyong;SHI Haiyun;WU Jiakai(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,Guangdong,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广东广州510663

出　　处：《南方能源建设》2024年第6期88-93,共6页Southern Energy Construction

基　　金：中国能源建设股份有限公司重大科技项目“热核聚变发电岛概念设计研究”(CEEC2021-ZDYF-08)。

摘　　要：[目的]浮动式核电站具有可移动,灵活布置,受地震,海啸影响更小,不占用陆地面积,受厂址条件影响小等优点,可有效支撑海上资源开发和海岛能源供应,是当今核能利用的热点方向之一。汽轮发电机组作为常规岛最重要的设备,它的结构型式、参数选择直接影响到电站的安全稳定运行。[方法]文章以ACP100S反应堆为基础,从汽轮机排汽方向、轴系数量、背压、末级叶片、再热参数、回热级数、发电机冷却方式方面,论述海上浮动核能平台汽轮发电机组技术方案。[结果]推荐选用单轴、下排汽、节流配汽、1个单流高压缸模块和1个单流低压缸模块组成的汽轮机;低压缸叶片采用1 200 mm长叶片,热力方案为1级再热4级回热,凝汽器采用单流程,发电机选用全空气冷却。[结论]研究结果可为后续浮动式核电站系统设计以及汽轮发电机组相关设计参数提供参考。[Introduction] The floating nuclear power plants have the advantages of mobility,flexible layout,less impact from earthquakes and tsunamis,no occupation of land area,and less impact from site conditions.It can effectively support offshore resource development and island energy supply,and is one of the hot topics in nuclear energy utilization today.As the most important equipment in conventional islands,the structural type and parameters of steam turbine generator sets directly affect the operation safety and stability of power plants.[Method] Based on the ACP100S reactor,this paper discussed the technical scheme of offshore floating nuclear energy platform turbine generator unit from the aspects of turbine exhaust direction,number of shaft systems,back pressure,final stage blades,reheat parameters,reheat stages,and generator cooling method.[Result] It is recommended to choose a steam turbine consisting of a single shaft,downward exhaust,throttling steam distribution,one single flow high-pressure cylinder module,and one single flow lowpressure cylinder module,with 1 200 mm long low-pressure cylinder blades,thermal scheme of 1-stage reheating and 4-stage backheating,single-process condenser,and air-cooled generator.[Conclusion] The results can provide reference for the subsequent design of floating nuclear power plant systems and related design parameters of steam turbine generator.

关 键 词：核能 浮动式电站 ACP100S 汽轮发电机组 空冷发电机 

分 类 号：TL48[核科学技术—核技术及应用] TK26[动力工程及工程热物理—动力机械及工程]