再热蒸汽温度控制对核电机组运行可靠性的影响.pdfVIP

第XX 卷 第XX 期 热 力 发 电 Vol.XX No.XX 选择年份 选择月份 THERMAL POWER GENERATION 选择月份 选择年份 再热蒸汽温度控制 对核电机组运行可靠性的影响 鲍旭东，颜铁光 （中核核电运行管理有限公司，浙江 海盐 314300） ［摘 要］某核电百万等级汽轮机在启动和停机过程中，发生了多起与汽水分离再热器（MSR ）系统 相关的设备故障和非计划停机运行事件。通过电厂设备运行数据及运行事故过程的分析发 现，MSR 系统设备的运行操作对汽轮机安全稳定运行有重大影响，需要优化MSR 再热蒸 汽温度控制方式，评估再热器管板温度变化超限对设备可靠性的影响。由于高中压汽缸蒸 汽参数的变化过快易引起汽缸热应力过大甚至变形，在汽轮机设备启停和低负荷运行期 间，需要重点关注MSR 再热蒸汽温度控制不当可能会引发汽缸变形和动静碰磨的问题。 ［关 键 词］汽水分离再热器；再热蒸汽温度；汽轮机；高中压汽缸；热膨胀 ［中图分类号］TK284.1 ［文献标识码］B ［DOI 编号］10.19666/j.rlfd.201810203 ［引用本文格式］鲍旭东, 颜铁光. 再热蒸汽温度控制对核电机组运行可靠性的影响[J]. 热力发电, 年, 卷(期): 起始页码-终 止页码. BAO Xudong, YAN Tieguang. Effect of reheat steam temperature control on operation reliability of nuclear power unit[J]. Thermal Power Generation, 年, 卷(期): 起始页码-终止页码. Effect of reheat steam temperature control on operation reliability of nuclear power unit BAO Xudong, YAN Tieguang (CNNC Nuclear Power Operations Management Co., Ltd, Haiyan 314300, China) Abstract: During the start-up and shutdown process of a 1 000 MW nuclear power turbine in a nuclear power plant, multiple equipment failures and unplanned downtime events related to the Moisture Separator Reheater (MSR) system have occurred. Due to the analyzation of the operating data and the process of operating failures, the operation of MSR has great influence on the safe and stable operation of turbine. Optimization of reheat steam temperature control mode of MSR and evaluation of the effect of over-limiting temperature variation of reheat tube plate on equipment reliability are needed. In this paper, due to the drastic change of steam parameters is