AP1000核电汽轮机中压调节阀气动力矩数值模拟

发布时间：2018-01-25 20:26

本文关键词： 核电汽轮机调节阀气动力矩数值模拟　出处：《汽轮机技术》2016年06期 　论文类型：期刊论文

【摘要】：利用FLUENT对AP1000核电汽轮机中压调节阀所受气动力矩进行数值模拟求解,并用工程计算对模拟结果进行验证。保持中压主汽阀全开,对调节阀不同开度下得到的数值模拟结果进行比较分析,并讨论气动力矩随调节阀开度的变化规律。结果表明:气动力矩的数值模拟求解方便简单,模拟结果虽与工程计算得到的结果有些许偏差,但在合理范围之内,所以数值模拟求解结果可信。从模拟结果得到的数据可以看出,调节阀由闭合逐渐开启过程中,气动力矩先逐渐增大,当开度开至40°左右达到最大值,之后气动力矩随开度增大而逐渐减小至0。
[Abstract]:The aerodynamic torque of medium pressure control valve of AP1000 nuclear power turbine is numerically simulated by FLUENT, and the simulation result is verified by engineering calculation, and the main steam valve of medium pressure is kept open. The numerical simulation results obtained from the different opening of the regulating valve are compared and analyzed, and the variation of the aerodynamic moment with the opening of the regulating valve is discussed. The results show that the numerical simulation of the aerodynamic moment is convenient and simple. Although the result of simulation is slightly different from the result of engineering calculation, it is within a reasonable range, so the result of numerical simulation is credible, which can be seen from the data obtained from the result of simulation. In the process of opening the valve from closure to opening, the aerodynamic torque increases first, reaches the maximum when the opening is about 40 掳, and then decreases to 0 with the increase of opening.
【作者单位】：华北电力大学能源动力与机械工程学院;
【分类号】：TK263.72;TM623
【正文快照】： 0前言核电汽轮机组的进汽初参数低且主蒸汽为略带湿度的饱和蒸汽,有效热焓降较小,导致进汽质量流量较大。同等容量的核电汽轮机组进汽量是火电机组的2倍,容积流量为4~6倍,所以核电汽轮机组的尺寸比相同功率的火电机组大很多[1,2]。这使得在高压缸与中压缸以及再热器和再热蒸汽

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