控制棒水压驱动步升过程流动阻力影响分析  

Analysis of Flow Resistance Influence on Step-up Process of Control Rod Hydraulic Drive System

作　　者：杨林清 秦本科[1] 薄涵亮[1] YANG Linqing;QIN Benke;BO Hanliang(Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学核能与新能源技术研究院,北京100084

出　　处：《原子能科学技术》2022年第7期1379-1386,共8页Atomic Energy Science and Technology

基　　金：清华大学实验室创新基金(201934)。

摘　　要：控制棒水压驱动系统(CRHDS)是清华大学为NHR200发明的新型内置式控制棒驱动系统。组合阀是驱动系统关键的流量控制部件,其流动阻力对控制棒水压驱动机构的步进性能有重要影响。本文完成了驱动机构不同流动阻力工况步升过程性能试验,建立了驱动机构水压缸步升过程理论模型,得到了水压缸步升过程关键性能参数的动态变化曲线,理论结果与试验结果符合很好。在此基础上,利用模型分析了热态工况驱动机构水压缸变流阻步升动态过程。结果表明:随着流动阻力的增大,步升平均速度逐渐减小,步升时间、步升后压力迟滞时间和步升过程总时间均增大。研究成果为CRHDS组合阀流动阻力的设计和优化奠定基础。Control rod hydraulic drive system(CRHDS)is a new type of built-in control rod drive technology which is invented by Tsinghua University for NHR200.The integrated valve(Ⅳ)is the main flow control component of the CRHDS.The flow resistance ofⅣhas a great influence on the control rod dynamic step-up process.The step-up performance experiments of CRHDS with different flow resistances ofⅣwere conducted under room temperature conditions in the paper.Meanwhile,the theoretical model of hydraulic cylinder step-up process was established to get the dynamic response of the hydraulic cylinder.The calculation results of theoretical model agree well with the experimental data.On this basis,the theoretical model of hydraulic cylinder step-up process was applied to the high temperature working conditions with different flow resistances ofⅣ.The analysis results show that with the increase of flow resistance,the step-up average velocity gradually decreases,and the step-up time,the pressure lag time after step-up and total time of step-up process increase,which lay a foundation for the design and optimization of the flow resistance of the integrated valve of the CRHDS.

关 键 词：控制棒水压驱动系统 水压缸 控制棒水压驱动机构 步升过程 流动阻力 

分 类 号：TL33[核科学技术—核技术及应用]