Quantitative Research on Parameter Uncertainty of Helical Coil Once-Through Tube Steam Generator on the Small Pressurized Water Reactor
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摘要: 为研究螺旋管直流蒸汽发生器(HCOTSG)参数不确定性对小型压水堆运行的影响,在建立堆芯功率控制系统、蒸汽发生器给水控制系统及稳压器压力和液位控制系统的基础上,开发小型压水堆HCOTSG参数不确定性量化平台。以螺旋管内外径不确定性量化为例,开展平台的应用研究。结果表明,开发的HCOTSG参数不确定性量化平台可以用于开展螺旋管内外径不确定性量化分析。
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关键词:
- 螺旋管直流蒸汽发生器(HCOTSG) /
- 螺旋管内外径 /
- 不确定性
Abstract: To study the influence of parameter uncertainties of helical coil once-through tube steam generator (HCOTSG) on the operation of small pressurized water reactor, based on the establishment of the core power control system, the feed water control system of steam generator and the pressure and water level control system of pressurizer a quantitative platform for parameter uncertainties of HCOTSG on the small pressurized water reactor was developed. Taking the uncertainty quantification of inner and outer diameters of helical pipes as an example, the application research of the platform is carried out. The results show that the developed platform can well quantify the uncertainty of the primary system of small pressurized water reactor. -
表 1 HCOTSG 结构参数
Table 1. Structure Parameters of HCOTSG
参数 参数值 参数 参数值 Di/m 0.012 换热管根数 1140 Do/m 0.015 单根螺旋管的高度/m 5 管束结构螺旋直径/m 0.351 平均每个螺旋管长度/m 15.491 R 0.533 总换热面积/m2 310.831 表 2 负荷以5%FP/min线性降至90%FP时一回路系统响应峰值描述统计
Table 2. Descriptive Statistics of the Peak Response of the Primary System When the Load is Linearly Reduced to 90%FP by 5%FP/min
参量 均值 标准差 相对标准偏差 最小值 最大值 3σ置信区间 堆芯相对功率 0.89517 0.00553 0.00618 0.88287 0.90681 [0.87858, 0.91176] 两相区高度/m 3.84781 0.16046 0.04171 3.47179 4.2081 [3.36643, 4.32919] 冷却剂平均温度/℃ 310.30886 0.13653 0.00044 309.99716 310.6358 [309.89927, 310.71845] 一次侧出口温度/℃ 299.75735 0.19771 0.00066 299.30928 300.22558 [299.16422, 300.35048] 二次侧出口温度/℃ 299.68907 2.25366 0.00752 294.27578 304.76053 [292.92809, 306.45005] 表 3 HCOTSG二次侧进口温度阶跃上升2℃时一回路系统响应峰值描述统计
Table 3. Descriptive Statistics of the Peak Response of the Primary System When the Inlet Temperature of the Secondary Side of HCOTSG Rises by 2℃
参量 均值 标准差 相对标准偏差 最小值 最大值 3σ置信区间 堆芯相对功率 0.98179 0.00579 0.00590 0.96774 0.99468 [0.96442, 0.99916] 两相区高度/m 4.02416 0.16480 0.04095 3.63529 4.39528 [3.52976, 4.51856] 冷却剂平均温度/℃ 310.73251 0.13983 0.00045 310.41602 311.06678 [310.31302, 311.15200] 一次侧出口温度/℃ 300.36149 0.19824 0.00066 299.91104 300.83549 [299.76677, 300.95621] 二次侧出口温度/℃ 299.68907 2.25366 0.00752 294.27578 304.76053 [292.92809, 306.45005] -
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