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NHR200-Ⅱ低温堆非能动余热排出系统多支路自然循环特性分析

耿一娲 柳雄斌 李笑天 张亚军

耿一娲, 柳雄斌, 李笑天, 张亚军. NHR200-Ⅱ低温堆非能动余热排出系统多支路自然循环特性分析[J]. 核动力工程, 2023, 44(6): 63-70. doi: 10.13832/j.jnpe.2023.06.0063
引用本文: 耿一娲, 柳雄斌, 李笑天, 张亚军. NHR200-Ⅱ低温堆非能动余热排出系统多支路自然循环特性分析[J]. 核动力工程, 2023, 44(6): 63-70. doi: 10.13832/j.jnpe.2023.06.0063
Geng Yiwa, Liu Xiongbin, Li Xiaotian, Zhang Yajun. Analysis of Multi-branch Natural Circulation Characteristics of Passive Residual Heat Removal System in NHR200-Ⅱ Reactor[J]. Nuclear Power Engineering, 2023, 44(6): 63-70. doi: 10.13832/j.jnpe.2023.06.0063
Citation: Geng Yiwa, Liu Xiongbin, Li Xiaotian, Zhang Yajun. Analysis of Multi-branch Natural Circulation Characteristics of Passive Residual Heat Removal System in NHR200-Ⅱ Reactor[J]. Nuclear Power Engineering, 2023, 44(6): 63-70. doi: 10.13832/j.jnpe.2023.06.0063

NHR200-Ⅱ低温堆非能动余热排出系统多支路自然循环特性分析

doi: 10.13832/j.jnpe.2023.06.0063
基金项目: 清华大学自主科研计划项目(20151080379)
详细信息
    作者简介:

    耿一娲(1996—),女,博士研究生,现主要从事反应堆热工水力分析方面的研究,E-mail: eva_geng_1996@163.com

    通讯作者:

    柳雄斌,E-mail: lxb@tsinghua.edu.cn

  • 中图分类号: TL33

Analysis of Multi-branch Natural Circulation Characteristics of Passive Residual Heat Removal System in NHR200-Ⅱ Reactor

  • 摘要: 多支路自然循环系统会出现流量分配不均的现象,为进一步分析系统流动特性,依托低温堆非能动余热排出系统(PRHR)试验台架,建立了多支路并行流道自然循环回路的简化数学模型,利用压降-流量特性图分析了支路倒流现象的机理,并讨论了多种因素对倒流支路数目的影响。分析结果表明:倒流现象降低了PRHR载热功率;增大主换热器(PHE)与空气冷却器(RHE)间的提升高差可以抑制PHE支路倒流现象;存在一临界提升高差,当提升高差小于临界提升高差时,改变PHE或RHE支路的阻力不会改变倒流PHE支路数量,当提升高差大于临界提升高差时,增加PHE支路阻力或减小RHE支路阻力均可以减少倒流支路数量直至完全抑制倒流。

     

  • 图  1  NHR200-Ⅱ PRHR系统示意图

    1—反应堆压力容器;2—堆芯;3—PHE;4—冷环管;5—热环管;6—稳压器;7—RHE;8—空冷塔侧

    Figure  1.  Schematic Diagram of PRHR System of NHR200-Ⅱ

    图  2  低温堆PRHR的PHE支路简图

    s1a—0~1段的长度,其他同理;h1a—1~2段的高度,其他同理;TPHE—PHE温度

    Figure  2.  Schematic Diagram of PHE Branches of PRHR System in Low Temperature Reactor

    图  3  低温堆PRHR系统RHE支路简图

    s1b—0~1段的长度,其他同理;h1b—0~1段的高度,其他同理;TRHE—RHE温度

    Figure  3.  Schematic Diagram of RHE Branch of PRHR System in Low Temperature Reactor

    图  4  低温堆PRHR系统不同倒流支路数目对应的压降-流量曲线

    Figure  4.  Pressure Drop - Flow Rate Curves of PRHR System in Low Temperature Reactor with Different Number of Reverse Flow Branches

    图  5  倒流支路对PRHR系统载热功率的影响

    Figure  5.  Influence of Reverse Flow Branch on Thermal Power of PRHR System

    图  6  RHE支路h的影响

    Figure  6.  Influence of h of RHE Branch

    图  7  RHE支路阻力的影响( $ h < {h_{\text{c}}} $)

    Figure  7.  Influence of Resistance of RHE Branch

    图  8  RHE支路阻力的影响( $ h > {h_{\text{c}}} $)

    Figure  8.  Influence of Resistance of RHE Branch

    图  9  hc随PRHR系统温差的变化曲线

    Figure  9.  Variation of hc with Temperature Difference of PRHR System

    图  10  h对PRHR系统工况点的影响

    Figure  10.  Influence of hof RHE on Operating Point of PRHR System

    图  11  不同PHE支路阻力下的PRHR系统工况点( $ h < {h_{\text{c}}} $)

    Figure  11.  Operating Point of PRHR System under Different Resistance of PHE Branches

    图  12  不同PHE支路阻力下的PRHR系统工况点( $ h > {h_{\text{c}}} $)

    Figure  12.  Operating Point of PRHR System under Different Resistance of PHE Branches

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出版历程
  • 收稿日期:  2023-02-16
  • 修回日期:  2023-04-12
  • 网络出版日期:  2023-12-11
  • 刊出日期:  2023-12-15

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