原子能科学技术2017，Vol.51Issue(10)：1791-1799,9.DOI:10.7538/yzk.2017.51.10.1791
控制棒水压驱动系统落棒减速部件三维流场分析
3D Numerical Analysis of Hydraulic Deceleration Device Flow Channel of Control Rod Hydraulic Drive System
李磊实 1秦本科 1薄涵亮1
作者信息
- 1. 清华大学 核能与新能源技术研究院 先进反应堆工程与安全教育部重点实验室,北京 100084
- 折叠
摘要
Abstract
Control rod hydraulic drive system (CRHDS),which is invented by Institute of Nuclear and New Energy Technology,Tsinghua University,is a new type of internal control rod drive technology for the nuclear heating reactor (NHR ). Control rod hydraulic deceleration device (CRHDD)is one of the main components of the CRHDS. The CRHDD performs the rod dropping deceleration function to reduce the peak impact force acting upon the control rod and prevent the cruciform blade from being deformed or damaged.The working mechanism of the CRHDD was presented and analyzed.The three dimensional flow field analysis of the CRHDD flow channels was carried out using the computational fluid dynamics (CFD)program FLUENT.The relationship between the flow coefficients of the hydraulic deceleration cylinder side wall flow channel and the cushion chamber flow channel and the control rod scram displacement was obtained on the basis of the flow field analysis results,which was substituted into the theoretical rod drop model to obtain the control rod scram displacements.The theoretical results agree well with the CRHDS scram test results under room temperature which verifies the validity of the flow field analysis results.Then the model was applied to study the tran-sient pressure inside the hydraulic deceleration cylinder and the scram speed versus the flow coefficients of the flow channels.The research results can give guidance for the design and optimization of the CRHDD.关键词
控制棒水压驱动系统/控制棒水力减速部件/快速落棒/计算流体力学/流量系数Key words
control rod hydraulic drive system/control rod hydraulic deceleration device/scram/computational fluid dynamics/flow coefficient分类
能源科技引用本文复制引用
李磊实,秦本科,薄涵亮..控制棒水压驱动系统落棒减速部件三维流场分析[J].原子能科学技术,2017,51(10):1791-1799,9.
