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首页> 外文会议>International Conference on Management, Manufacturing and Materials Engineering >Transient Dynamic Characteristics Study on Reactor Coolant Pump in Variable Working Conditions
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Transient Dynamic Characteristics Study on Reactor Coolant Pump in Variable Working Conditions

机译：反应堆冷却剂泵在可变工作条件下的瞬态动态特征研究

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For the study of the transient hydraulic characteristics and internal flow mechanism of the reactor coolant pump from designed conditions to off-designed conditions, using CFX software to simulate the variable flow transient characteristics of reactor coolant pump impeller passageway. The results show that: during the flow transition, the radial force of the impeller doesn't rotate around the coordinates origin, but rotates around some point in the fourth quadrant, and radial forces of the guide vanes mainly distributes in the first and second quadrant, and radial forces of the volute completely distribute in the fourth quadrant. Because of the influence from the blade number, radial forces of the impeller and guide vanes are in obvious star distribution, meanwhile, because the pump body uses annular structure, the flow and velocity in the impeller passageway and the pressure distribution of the impeller export asymmetry radial force. During the transition to big flow, the radial force impact of the impeller and guide vane mainly shows in the direction of the offset and slightly decreasement of the change magnitude. The radial force on the volute moves down with the incensement of the flow, and the changes magnitude become larger. During the transition to small flow, radial forces bearing on impellers, guide vanes and the volute, whether on the size, direction or the change magnitude, have a significant change.
机译：对于从设计条件到非设计条件的反应器冷却剂泵的瞬态液压特性和内部流动机理的研究，使用CFX软件模拟反应堆冷却剂泵叶轮通道的可变流动瞬态特性。结果表明：在流动过渡期间，叶轮的径向力不会围绕坐标旋转，但在第四象限的某个点周围旋转，引导叶片的径向力主要分布在第一和第二象限中并且蜗壳的径向力在第四象限中完全分布。由于叶片数的影响，叶轮和引导叶片的径向力在明显的星形分布中，同时，因为泵体使用环形结构，叶轮通道中的流动和速度以及叶轮出口不对称的压力分布径向力。在过渡到大流动期间，叶轮和引导叶片的径向力撞击主要显示在偏移方向上，并且变化幅度略微降低。蜗壳上的径向力随着流动的活化而下降，变化量大变大。在过渡到小流动期间，轴承轴承在叶轮，导叶和蜗壳上，无论是大小，方向还是变化的幅度，都具有显着的变化。

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