高温气冷堆HTGR-10能量转换单元中压气机气动性能试验研究

Testing compressor aerodynamic performance in the power conversion unit of HTGR-10

氦气轴流式压气机作为高温气冷堆能量转换单元的关键部件之一,其性能直接影响系统的发电性能.HTGR-10采用B rayton直接循环系统进行能量转换,它的特点是透平压气机与系统的其他设备密封于同一单元内,保证了良好的安全性.对于系统整体设计来说,准确地估算压气机气动性能,稳定性边界和运行性能是很重要的,因此针对HTGR-10氦压气机的设计方案,建立了完整的实验装置系统,并且在不同操作压力、转速下分别得到了氦气和空气作为工质时的压气机特性曲线.最后,对于用空气代替氦气作为工质进行实验做了对比分析,研究了通过相似模拟方法用压气机的空气实验数据设计氦气压气机可行性和有效性.对比试验结果表明相似模拟的准确性很高.

This paper discusses an experimental investigation of the helium compressor in the system of the high temperature gas reactor HTGR-10. The system uses a direct helium Brayton cycle for power conversion. In this con- figuration, there is strong coupling between the compressor and other elements in the system. Estimation of com- pressor performances in stable and transient operations is highly important for the designer. In order to get a reliable data, an experimental system was built. Under different operating pressures, the compressor behavior curves were obtained for both helium and air. The possibilities were studied and the most effective approach for designing a heli- um compressor was chosen, given the experimental data for the air compressor. The simulation method used in this experiment was examined, and the results show that the simulation was effective.