压缩空气储能系统膨胀机调节级配气特性数值研究

doi:10.19799/j.cnki.2095-4239.2020.0038

储能科学与技术 ›› 2020, Vol. 9 ›› Issue (2): 425-434.doi: 10.19799/j.cnki.2095-4239.2020.0038

• 庆祝陈立泉院士八十寿辰专刊 • 上一篇下一篇

压缩空气储能系统膨胀机调节级配气特性数值研究

刘嘉豪^1,²(), 王星¹, 张雪辉^1,², 李文^1,², 朱阳历^1,², 陈海生^1,²()

^1. 中国科学院工程热物理研究所，北京 100190
^2. 中国科学院大学，北京 100049

收稿日期:2020-01-14 修回日期:2020-01-22 出版日期:2020-03-05 发布日期:2020-03-15
通讯作者: 陈海生 E-mail:liujiahao@iet.cn;chen_hs@iet.cn
作者简介:刘嘉豪（1995—），男，硕士研究生，主要从事叶轮机械气动热力学研究，E-mail：liujiahao@iet.cn；
基金资助:
国家重点研发计划(2017YFB0903605);国家自然科学基金面上项目基金项目(51976218);国家杰出青年科学基金(51925604);中国科学收院前沿科学重点研究项目(QYZDB-SSW-JSC023);贵州省科技基金计划项目(2019]1285)

Numerical study on the air distribution characteristics of the turbine regulating stage in a compressed air energy storage system

LIU Jiahao^1,²(), WANG Xing¹, ZHANG Xuehui^1,², LI Wen^1,², ZHU Yangli^1,², CHEN Haisheng^1,²()

^1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
^2. University of Chinese Academy of Sciences, Beijing 100049, China

Received:2020-01-14 Revised:2020-01-22 Online:2020-03-05 Published:2020-03-15
Contact: Haisheng CHEN E-mail:liujiahao@iet.cn;chen_hs@iet.cn

摘要/Abstract

摘要：

压缩空气储能被认为是最具发展潜力的大规模储能技术之一。本文针对压缩空气储能系统变工况运行的需求和储气装置与膨胀机设备入口存在压力损失的问题，提出采用喷嘴配气降低节流损失的方法，并通过计算流体动力学方法对MW级压缩空气储能系统中某闭式向心膨胀机调节级进行了整机全周数值计算与分析，通过调整各喷嘴组进口的气体状态，研究喷嘴配气对调节级性能的影响。研究结果表明，喷嘴配气条件下，调节级流量可在额定流量的0.86~1.42倍之间变化，满足调节需求；流量额定时，运行全过程调节级出功相比节流配气调节时可提高11.2%，总效率最大可提升9.4%。通过以上研究，揭示了喷嘴配气方式对向心膨胀机性能影响的机理，为喷嘴配气向心膨胀机的设计、优化及系统运行控制提供了理论依据。

关键词: 喷嘴配气, 压缩空气储能, 膨胀机, 变工况

Abstract:

Compressed air energy storage is considered the most promising large-scale energy storage system. Because a compressed air energy storage system operates under variable working conditions and is characterized by the long-term pressure loss between the air storage device and the inlet of the turbine, in this study, a nozzle governing mode is proposed to reduce throttling losses. Numerical calculation and analysis of a closed radial turbine in a MW-level compressed air energy storage system were performed by the computational fluid dynamics method. By adjusting the air state at the inlet of each nozzle group, the effects of air distribution on control-stage performance was studied. The results show that under the nozzle governing condition, the flow rate of the turbine varies between 0.86 and 1.42 times that of the rated flow rate, which meets the regulation requirement. The output of the regulating stage can also be increased by 11.2% at the specified flow rate compared with that using throttled governing. The abovementioned results reveal the effects of air distribution on the performance of the radial turbine, which provides a theoretical basis for the design, optimization, and system operation control of a nozzle governing radial turbine.

Key words: nozzle governing, compressed air energy storage, turbine, variable working conditions

中图分类号:

TK 472⁺.6

刘嘉豪, 王星, 张雪辉, 李文, 朱阳历, 陈海生. 压缩空气储能系统膨胀机调节级配气特性数值研究[J]. 储能科学与技术, 2020, 9(2): 425-434.

LIU Jiahao, WANG Xing, ZHANG Xuehui, LI Wen, ZHU Yangli, CHEN Haisheng. Numerical study on the air distribution characteristics of the turbine regulating stage in a compressed air energy storage system[J]. Energy Storage Science and Technology, 2020, 9(2): 425-434.

图/表 3

参考文献 17

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压缩空气储能系统膨胀机调节级配气特性数值研究

Numerical study on the air distribution characteristics of the turbine regulating stage in a compressed air energy storage system

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