Abstract：Modular high temperature gas-cooled reactors (HTGRs) have inherent safety characteristics with high reactor outlet temperatures which can be coupled with closed Brayton or Rankine cycles to provide efficient power generation. The helium turbo-compressors and circulators are essential power components that couple the HTGRs with these two cycles. This research investigated the steady-state and dynamic thermodynamic characteristics for a closed helium Brayton cycle for two helium turbo-compressor designs, the 2.2 MW prototype and a 120 MW commercial helium turbo-compressor. Helium circulators were also developed for the 10 MW HTGR (HTR-10) and the HTGR demonstration plant (HTR-PM) with complete performance data for the helium circulators. An experimental platform was then built to test the two types of helium circulators, one with magnetic bearings and one with dry gas seals. This research shows that the Institute of Nuclear and New Energy Technology, Tsinghua University, has developed helium turbo-compressors and circulators for advanced nuclear power plants.
王捷, 王宏, 赵钢, 杨小勇, 叶萍, 曲新鹤. 高温气冷堆氦气透平压气机和主氦风机研究进展[J]. 清华大学学报（自然科学版）, 2021, 61(4): 350-360.
WANG Jie, WANG Hong, ZHAO Gang, YANG Xiaoyong, YE Ping, QU Xinhe. Helium turbo-compressor and circulator for a high temperature gas-cooled reactor. Journal of Tsinghua University(Science and Technology), 2021, 61(4): 350-360.
 WU Z X, LIN D C, ZHONG D X. The design features of the HTR-10[J]. Nuclear Engineering and Design, 2002, 218(1-3):25-32.  ZHANG Z Y, WU Z X, WANG D Z, et al. Current status and technical description of Chinese 2×250 MWth HTR-PM demonstration plant[J]. Nuclear Engineering and Design, 2009, 239(7):1212-1219.  王捷. 高温气冷堆氦气透平循环热工特性的初步研究[J]. 高技术通讯, 2002, 12(9):91-95. WANG J. Preliminary study on thermal features for high temperature gas-cooled reactor gas turbine cycle[J]. High Technology Letters, 2002, 12(9):91-95. (in Chinese)  曲新鹤, 杨小勇, 王捷. 商用高温气冷堆氦气透平循环发电热力学参数分析和优化[J]. 清华大学学报(自然科学版), 2017, 57(10):1114-1120. QU X H, YANG X Y, WANG J. Thermodynamic analysis and optimization of helium turbine cycle of commercial high temperature gas-cooled reactor[J]. Journal of Tsinghua University (Science and Technology), 2017, 57(10):1114-1120. (in Chinese)  李骁. 高温堆氦气透平发电系统软件平台及系统特性研究[D]. 北京:清华大学, 2017. LI X. Research on software platform and system characteristics of HTGR combined closed Brayton cycle[D]. Beijing:Tsinghua University, 2017. (in Chinese)  LI X, YANG X Y, ZHANG Y J, et al. HTR-10GT dual bypass valve control features and decoupling strategy for power regulation[J]. Science and Technology of Nuclear Installations, 2017, 2017:9404636.  丁铭. 高温气冷堆闭式布雷登循环动态特性和控制方法研究[D]. 北京:清华大学, 2009. DING M. Study on dynamic characteristics and control methods of HTGR Brayton cycle[D]. Beijing:Tsinghua University, 2009. (in Chinese)  洒荣园. 高温气冷堆布雷登循环旁路阀调节的动态特性研究[D]. 北京:清华大学, 2007. SA R Y. Study on dynamic features of bypass valve control for HTGR Brayton cycle[D]. Beijing:Tsinghua University, 2007. (in Chinese)  WANG J, ZHOU H Z, TANG Q F. The experimental study on the helium circulator of HTR-10[J]. Nuclear Engineering and Design, 2001, 210(1-3):259-264.  ZHOU H Z, WANG J. Helium circulator design and testing[J]. Nuclear Engineering and Design, 2002, 218(1-3):189-198.  莫非. HTR-PM主氦风机叶轮流场分析与结构优化[D]. 北京:清华大学, 2019. MO F. Flow field analysis and structure optimization of helium circulator for HTR-PM[D]. Beijing:Tsinghua University, 2019. (in Chinese)  ZHAO Y L, YANG G J, LIU X N, et al. Dynamics and thermal analysis of the auxiliary bearing for the helium circulator of HTR-PM[J]. Annals of Nuclear Energy, 2018, 112:474-485.  ZHAO G, YE P, WANG H, et al. Endurance test of full-scale mock-up helium circulator for HTR-PM[J]. Nuclear Engineering and Design, 2018, 329:20-24.