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确保压缩空气储能地下内衬硐库的高密封性并有效控制气体泄漏率，是提高能量转化效率的关键。为精准评估储气库的泄漏情况，首先，将泄漏率定义为单位时间内泄漏的气体质量与储气库内初始气体质量的比值；然后，提出了一种基于气体状态方程和实时监测数据的泄漏率计算方法；接着，为实现实时监测，设计了包含管道监测系统、库内监测系统和数据处理模块的综合系统，以实现数据的实时收集与处理；最后，利用计算流体力学模拟方法进行了对比验证，并开展了中试模型实验应用。结果表明：该计算方法在较小的误差范围内具有较高的可靠性，能够准确计算储气库实时的泄漏率；中试模型实验的成功应用验证了该计算方法和监测系统在实际操作中的有效性。研究可为提高储气库的密封性能提供理论依据。
Abstract：Ensuring high sealing performance and effectively controlling gas leakage in underground lined rock caverns for compressed air energy storage(CAES) are crucial for improving energy conversion efficiency. To accurately assess gas leakage, the leakage rate is first defined as the ratio of the gas mass leaked per unit time to the initial gas mass in the storage cavern. A calculation method for the leakage rate is then proposed, based on the gas state equation and real-time monitoring data. To achieve real-time monitoring, a comprehensive system comprising pipeline monitoring, in-cavern monitoring, and data processing modules is designed to continuously collect and process data. Finally, the method is validated by comparison with computational fluid dynamics simulations and applied in a pilot-scale model test. The results indicate that the proposed calculation method exhibits high reliability within a small margin of error and can accurately determine the real-time leakage rate of the storage cavern. Moreover, both the calculation method and the monitoring system have been successfully applied in the pilot-scale model test, demonstrating their effectiveness in practical operation. This research can provide on theoretical basis for improving the sealing performance of gas storage.
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基本信息:
DOI：10.13578/j.cnki.issn.1671-1556.20250219
中图分类号:TK02
引用信息:
[1]孙冠华,耿璇,张金涛,等.压缩空气储能地下内衬硐库泄漏率定义、计算与监测[J].安全与环境工程,2025,32(05):15-20+46.DOI:10.13578/j.cnki.issn.1671-1556.20250219.
基金信息:
湖北省自然科学基金（三峡创新发展联合基金）重点项目（2022CFD031）