自然循环与强迫循环转换过渡过程研究  

Study on transient characteristics of transition between natural circulation and forced circulation

作　　者：田兆斐[1] 赵强[1] 彭敏俊[1] 成守宇[1] 薛若军[1] 

机构地区：[1]哈尔滨工程大学核科学与技术学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2010年第10期1398-1404,共7页Journal of Harbin Engineering University

基　　金：高等学校创新引智计划资助项目(B08047)

摘　　要：针对自然循环和强迫循环转换的过渡过程问题,建立主冷却剂系统数学模型及中子动力学模型,利用完整的实时仿真平台,研究了船用核动力装置一回路自然循环与强迫循环相互转换的过渡过程中反应堆功率、冷却剂温度等主要系统参数的瞬态特性.计算结果表明,转换前初始反应堆功率水平对过渡过程的快速、安全及稳定有着重要的影响,较高的初始反应堆功率水平有可能导致出现瞬时高功率峰值并出现短周期现象,威胁反应堆的安全.针对过渡过程中的潜在风险,提出了在适当时机由操纵员手动调节控制棒的人为干预措施.分析结果表明,该措施可以有效地缩短过渡过程,改善过渡过程的稳定性和安全性.While aiming to solve the problems caused by transient characteristics of transition between natural circulation and forced circulation,the reactor coolant system（RCS） model and the neutron kinetics model were presented.An integrated real-time simulation system was adopted,and the transient performances of the main parameters in the marine nuclear power plant,such as reactor power and coolant temperature,for transition of the primary coolant circuit between natural circulation and forced circulation were studied.The calculation results show that the initial reactor power has an important effect on the rapidity,security,and stability of the transition process;higher initial reactor power is likely to cause a high peak in transient reactor power and a short period which could threaten the reactor＇s safety.To reduce the potential risks in the transition processes,intervention measures were presented involving the adjustment of control rods by the operators in a timely manner.The analysis shows that the transition process is shortened and the stability and the safety of transitions are effectively improved.

关 键 词：核动力装置 自然循环 强迫循环 瞬态特性 干预措施 

分 类 号：TL333[核科学技术—核技术及应用]