安全壳过滤排放系统文丘里洗涤器除碘性能分析

辐射防护 ›› 2022, Vol. 42 ›› Issue (6): 598-602.

安全壳过滤排放系统文丘里洗涤器除碘性能分析

王稹¹, 张计荣¹, 白东进², 缪骐远², 李永国¹, 任宏正¹, 王佳¹, 张渊¹, 丘丹圭¹, 侯建荣¹

1.中国辐射防护研究院,太原 030006;
2.三门核电有限公司,浙江三门 317100

收稿日期:2021-08-16 出版日期:2022-11-20 发布日期:2023-01-05
作者简介:王稹(1989—),男,2013年本科毕业于成都理工大学核工程与技术专业,2016年硕士毕业于新疆大学核技术及应用专业, 助理研究员。E-mail:15035169971@163.com
基金资助:
中国辐射防护研究院院基金项目(YJ18000603)。

Analysis of iodine-removing performance of venturi scrubber in containment filtration and discharge system

WANG Zhen¹, ZHANG Jirong¹, BAI Dongjin², MIAO Qiyuan², LI Yongguo¹, REN Hongzheng¹, WANG Jia¹, ZHANG Yuan¹, QIU Dangui¹, HOU Jianrong¹

1. China Institute for Radiation Protection, Taiyuan 030006;
2. Sanmen Nuclear Power Co. Ltd., Zhejiang Sanmen 317100

Received:2021-08-16 Online:2022-11-20 Published:2023-01-05

摘要/Abstract

摘要： 本文通过CFD(Computational Fluid Dynamics)数值模拟方法,对文丘里洗涤器运行工况进行模拟计算。分析入口气相流速、系统压力的改变对引射量的影响,并与实验方法结合,探讨文丘里洗涤器引射能力对除碘效率的影响,并对某核电厂安全壳过滤排放系统排放工况提出指导性建议。结果表明:提高入口气相流速可提升引射量,且引射量呈现近似线性增长关系,同时吸液管内外侧压差呈现近似抛物线规律,系统除碘效率在初始阶段与引射量的增长趋势保持一致,随后在引射量达到一定水平后趋于稳定。为保证较高除碘效率,系统排放风量应保持在3 300 m³/h以上;在0.1~0.5 MPa系统压力范围内,除碘效率均可保持在较高水平,压力增大有助于引射量提升,并且在高流量区提高更加明显。

关键词: 安全壳, 文丘里洗涤器, CFD数值模拟, 除碘性能

Abstract: In this paper, the operation conditions of Venturi scrubbers in nuclear power plants is simulated with a CFD numerical simulation method. The influence of the change of air flow velocity and system pressure on the ejection volume was analyzed. Combined with the experiment method, the influence of the ejection capacity of the Venturi scrubber on iodine removal efficiency was discussed, and some guiding suggestions for the discharge conditions of the containment filtration and discharge system of a nuclear power plant were put forward. The results show that increasing air flow velocity can increase the injection amount, and the injection amount presents an approximate linear growth relationship. Meanwhile, the pressure difference between the inside and outside of the suction tube presents an approximate parabola law. The iodine removal efficiency of the system is consistent with the increasing trend of the injection amount in the initial stage, and then tends to be stable after the injection amount reaches a certain level. In order to ensure a high iodine removal efficiency, the exhaust air flow of the system should be kept above 3 300 m³/h. In the range of 0.1 to 0.5 MPa system pressure, the iodine removal efficiency can be maintained at a high level. The increase of pressure is helpful to the increase of ejection capacity, and the increase is more obvious in the high flow area.

Key words: containment, Venturi scrubber, numerical simulation, performance of iodine removal

中图分类号:

TL75

王稹, 张计荣, 白东进, 缪骐远, 李永国, 任宏正, 王佳, 张渊, 丘丹圭, 侯建荣. 安全壳过滤排放系统文丘里洗涤器除碘性能分析[J]. 辐射防护, 2022, 42(6): 598-602.

WANG Zhen, ZHANG Jirong, BAI Dongjin, MIAO Qiyuan, LI Yongguo, REN Hongzheng, WANG Jia, ZHANG Yuan, QIU Dangui, HOU Jianrong. Analysis of iodine-removing performance of venturi scrubber in containment filtration and discharge system[J]. RADIATION PROTECTION, 2022, 42(6): 598-602.

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