HTGR高温气冷反应堆的高温氦气取样研究

Study on high temperature helium sampling of HTGR high temperature gas cooled reactor

高温气冷堆(HTGR)因其产生高温氦气的能力及其固有的安全特性而特别具有吸引力。确认了反应堆特性和反应堆性能,描述了HTTR高温试验运行的结果,并对反应堆运行进行了监测,以证明运行的安全性和稳定性。同时,研究了HTGR高温氦取样回路(HTHSL)在蒸汽发生器(SG)中的输运(沉积)行为和固体裂变产物总量分别设计。通过基于热工水力学分析的优化设计和仿真,沉积取样装置(DSD)的3套管结构能够实现均匀的全程温度控制。在相应模拟的基础上,改进了HTGR高温气冷反应堆的高温氦气取样回路,可用于SG高温氦中重要核的取样。这些方案为获得高温氦源项提供了有效的解决方法,为高温气冷堆源项的分析提供了更深入的认识。

High Temperature Gas-cooled Reactor(HTGR)is particularly attractive because of its ability to produce high temperature helium and its inherent safety characteristics.The reactor characteristics and reactor performance were confirmed,the results of HTTR high temperature test operation were described,and the reactor operation was monitored to prove the safety and stability of operation.At the same time,the transport(deposition)behavior of HTGR High Temperature Helium Sampling Loop(HTHSL)in Steam Generator(SG)and the total amount of solid fission products are designed respectively.Through the optimization design and simulation based on thermal hydraulic analysis,the 3 casing structure of Deposition Sampling Device(DSD)can realize uniform whole process temperature control.Based on the corresponding simulation,the high temperature helium sampling circuit of HTGR high temperature gas cooled reactor is improved,which can be used to sample important nuclei in SG high temperature helium.These schemes provide effective solutions for obtaining the source term of high-temperature helium and provide a deeper understanding for the analysis of the source term of high-temperature gas-cooled stack.