Application and optimal design of the bionic guide vane to improve the safety serve performances of the reactor coolant pump
Application and optimal design of the bionic guide vane to improve the safety serve performances of the reactor coolant pump
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DOI：
10.1016/j.net.2022.01.031
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发表时间：
2022-02
影响因子：
2.7
通讯作者：
Haoran Liu;Xiaofang Wang;Yeming Lu;Yongqin Yan;Wei Zhao;Xiaocui Wu;Zhi-Li Zhang
中科院分区：
文献类型：
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作者：
Haoran Liu;Xiaofang Wang;Yeming Lu;Yongqin Yan;Wei Zhao;Xiaocui Wu;Zhi-Li Zhang
核冷却剂泵作为核岛的重要装置，可为介质循环持续提供动力。叶片是核冷却剂泵中的固定部件之一，安装在叶轮和壳体之间。叶片的形状对泵的整体性能和稳定性起着重要作用，是安全服务过程中的重要指标。因此，首先将仿生概念应用到叶片的设计过程中，以提高核冷却剂泵的性能。以冷却剂泵高性能缩比水力模型（比例为1：2.5）为参考，针对核冷却剂泵导叶的独特结构，提出了统一仿生设计方法。然后，建立新的优化设计平台，输出最优的仿生叶片。最后对对比结果及相应机制进行了分析。得到如下结论：（1）引入了四个参数来配置仿生叶片的形状，并论证了各个参数的意义； (2)通过优化设计平台成功获得最优仿生叶片，效率性能和头部性能分别提高1.6%和1.27%； (3)与原始叶片相比，优化后的仿生叶片可以改善内部流动特性，即减少流动损失，减小压力脉动幅度； (4)通过机理分析可以发现，仿生结构可以诱发展向速度和涡流，从而减少阻力，抑制边界层分离。
As an important device in the nuclear island, the nuclear coolant pump can continuously provide power for medium circulation. The vane is one of the stationary parts in the nuclear coolant pump, which is installed between the impeller and the casing. The shape of the vane plays a significant role in the pump's overall performance and stability which are the important indicators during the safety serve process. Hence, the bionic concept is firstly applied into the design process of the vane to improve the performance of the nuclear coolant pump. Taking the scaled high-performance hydraulic model (on a scale of 1:2.5) of the coolant pump as the reference, a united bionic design approach is proposed for the unique structure of the guide vane of the nuclear coolant pump. Then, a new optimization design platform is established to output the optimal bionic vane. Finally, the comparative results and the corresponding mechanism are analyzed. The conclusions can be gotten as: (1) four parameters are introduced to configure the shape of the bionic blade, the significance of each parameter is herein demonstrated; (2) the optimal bionic vane is successfully obtained by the optimization design platform, the efficiency performance and the head performance of which can be improved by 1.6% and 1.27% respectively; (3) when compared to the original vane, the optimized bionic vane can improve the inner flow characteristics, namely, it can reduce the flow loss and decrease the pressure pulsation amplitude; (4) through the mechanism analysis, it can be found out that the bionic structure can induce the spanwise velocity and the vortices, which can reduce drag and suppress the boundary layer separation.