级联水力学动态仿真模型研究及应用
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摘要
级联的流体状态是影响级联分离效果和运行安全的重要因素。为开展级联动态水力学研究,针对层架型级联系统,利用各模块仿真模型搭建了级联动态仿真系统并对部分动态过程进行了模拟,通过与实际运行数据对比分析,确定了主机轻馏分流量方程及压强调节器动态调节方程的具体形式。计算结果表明,利用研究得到的系统仿真模型进行仿真模拟,所得到的系统参数变化与实际运行数据符合较好,模拟结果合理可信,所得仿真模型可用于其他级联系统的仿真研究,由此得到的级联各设计参数可作为实际级联调整和设计的参考依据。同时,利用研究所得的系统仿真模型,针对级联系统中可能存在的故障情况进行了模拟验证,仿真结果与实际运行数据符合良好,从而以仿真模拟的手段验证了系统中存在的问题。
The state of the fluid in a centrifuge cascade is an important factor affecting the cascade separation performance and operation safety. In order to study dynamic cascade hydraulics, a dynamic simulation system for a layer cascade system was established with simulation models for all cascade modules. Some dynamic processes were simulated. The flow equation for the centrifuge light fraction and the dynamic equation for the pressure regulator were determined by comparing the simulation results with the actual operating data. The simulation results obtained by using the improved simulation models demonstrate that the system parameter changes are in good agreement with the actual operation data, and the simulation results are reasonable and reliable, which indicates that the improved simulation models can be applied to the simulation of other centrifuge cascade systems. The obtained parameters can be used as a reference for adjusting and designing practical cascades. Meanwhile, the simulation verification for possible faults in the cascade system was carried out by using the improved system simulation model. The simulation results are in good agreement with the actual operation data.
The state of the fluid in a centrifuge cascade is an important factor affecting the cascade separation performance and operation safety. In order to study dynamic cascade hydraulics, a dynamic simulation system for a layer cascade system was established with simulation models for all cascade modules. Some dynamic processes were simulated. The flow equation for the centrifuge light fraction and the dynamic equation for the pressure regulator were determined by comparing the simulation results with the actual operating data. The simulation results obtained by using the improved simulation models demonstrate that the system parameter changes are in good agreement with the actual operation data, and the simulation results are reasonable and reliable, which indicates that the improved simulation models can be applied to the simulation of other centrifuge cascade systems. The obtained parameters can be used as a reference for adjusting and designing practical cascades. Meanwhile, the simulation verification for possible faults in the cascade system was carried out by using the improved system simulation model. The simulation results are in good agreement with the actual operation data.
引文
[1] 赵晶,曾实. 离心机特性参数的水力学分析[J]. 清华大学学报,2006,46(9):77-80. ZHAO Jin, ZENG Shi. Characteristic centrifuge parameters in cascade hydraulics[J]. Journal of Tsinghua University, 2006, 46(9): 77-80(in Chinese).
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[5] 李维杰,闫昊,曾庆承,等. 不同形式离心级联的静态稳定性研究[C]//中国核学会2017年学术年会论文集. 北京:中国原子能出版社,2018.
[6] MALIK M N, AFZAL M, TARIQ G F. Mathematical modeling and computer simulation of transient flow in centrifuge cascade pipe network with optimizing techniques[J]. Computers & Mathematics with Applications, 1998, 36(4): 63-76.
[7] MALIK M N, AFZAL M, TARIQ G F. Global solution algorithm with some assisting techniques for modeling of unsteady flow in centrifuge cascade pipe network[J]. Computer Methods in Applied Mechanics and Engineering, 1999, 173(1): 257-269.
[8] 傅云清,曾实,侯岩松. 离心级联的流体状态模拟[J]. 清华大学学报,2005,45(3):7-11. FU Yunqing, ZENG Shi, HOU Yansong. Simulations of the hydraulic status in gas centrifuge cascades[J]. Journal of Tsinghua University, 2005, 45(3): 7-11(in Chinese).
[9] 李锦,曾实. 离心长级联水力学动态数值模拟[J]. 同位素,2009,22(2):87-91. LI Jin, ZENG Shi. Dynamic numerical simulation for hydraulics in the centrifuge long cascade[J]. Journal of Isotopes, 2009, 22(2): 87-91(in Chinese).
[10] 李维杰,曾实,武中地. 离心机的水力学动态模型[C]//中国核学会2015年学术年会论文集. 北京:中国原子能出版社,2016.
[11] 李维杰,闫昊. 离心级联的动态水力学模型[R]. 太原:中核新能核工业工程有限责任公司,2017.
[12] 闫昊,李维杰. 供料孔板堵塞对级联流体动态性能的影响[R]. 太原:中核新能核工业工程有限责任公司,2017.
[13] 曾庆承. 间接作用调节器流量范围计算书[R]. 太原:核工业第七研究设计院,2004.
[14] 李维杰,闫昊. 供料孔板堵塞对离心级联分离性能的研究[C]//首届“核燃料杯”青年科技论文报告会论文集. 北京:中国核燃料有限公司,2017.
[15] 郭松涛,吴英禄. 扩散级联水力学[M]. 北京:原子能出版社,1986.
[2] 李锦,曾实. 压强偏移法求解离心级联水力学静态特征根[J]. 原子能科学技术,2007,41(5):605-609. LI Jin, ZENG Shi. Pressure excursion method for obtaining characteristic roots of hydraulics in centrifuge cascades[J]. Atomic Energy Science and Technology, 2007, 41(5): 605-609(in Chinese).
[3] 李维杰,武中地,曾实,等. 参数可调离心级联的静态特征根及扰动传播分析[J]. 原子能科学技术,2014,48(增刊):813-818. LI Weijie, WU Zhongdi, ZENG Shi, et al. Analysis of static characteristic roots and propagation of disturbance of adjustable centrifuge cascade[J]. Atomic Energy Science and Technology, 2014, 48(Suppl.): 813-818(in Chinese).
[4] 李维杰,武中地,曾实. 刚性离心级联水力学特性分析[J]. 原子能科学技术,2016,50(1):1-6. LI Weijie, WU Zhongdi, ZENG Shi. Analysis of hydraulic characteristic of rigid cascade[J]. Atomic Energy Science and Technology, 2016, 50(1): 1-6(in Chinese).
[5] 李维杰,闫昊,曾庆承,等. 不同形式离心级联的静态稳定性研究[C]//中国核学会2017年学术年会论文集. 北京:中国原子能出版社,2018.
[6] MALIK M N, AFZAL M, TARIQ G F. Mathematical modeling and computer simulation of transient flow in centrifuge cascade pipe network with optimizing techniques[J]. Computers & Mathematics with Applications, 1998, 36(4): 63-76.
[7] MALIK M N, AFZAL M, TARIQ G F. Global solution algorithm with some assisting techniques for modeling of unsteady flow in centrifuge cascade pipe network[J]. Computer Methods in Applied Mechanics and Engineering, 1999, 173(1): 257-269.
[8] 傅云清,曾实,侯岩松. 离心级联的流体状态模拟[J]. 清华大学学报,2005,45(3):7-11. FU Yunqing, ZENG Shi, HOU Yansong. Simulations of the hydraulic status in gas centrifuge cascades[J]. Journal of Tsinghua University, 2005, 45(3): 7-11(in Chinese).
[9] 李锦,曾实. 离心长级联水力学动态数值模拟[J]. 同位素,2009,22(2):87-91. LI Jin, ZENG Shi. Dynamic numerical simulation for hydraulics in the centrifuge long cascade[J]. Journal of Isotopes, 2009, 22(2): 87-91(in Chinese).
[10] 李维杰,曾实,武中地. 离心机的水力学动态模型[C]//中国核学会2015年学术年会论文集. 北京:中国原子能出版社,2016.
[11] 李维杰,闫昊. 离心级联的动态水力学模型[R]. 太原:中核新能核工业工程有限责任公司,2017.
[12] 闫昊,李维杰. 供料孔板堵塞对级联流体动态性能的影响[R]. 太原:中核新能核工业工程有限责任公司,2017.
[13] 曾庆承. 间接作用调节器流量范围计算书[R]. 太原:核工业第七研究设计院,2004.
[14] 李维杰,闫昊. 供料孔板堵塞对离心级联分离性能的研究[C]//首届“核燃料杯”青年科技论文报告会论文集. 北京:中国核燃料有限公司,2017.
[15] 郭松涛,吴英禄. 扩散级联水力学[M]. 北京:原子能出版社,1986.