| 赵新,练继建,欧阳群安.核电站融冰数值模拟及回水管布置优化研究[J].水利学报,2017,48(11):1373-1379 |
| 核电站融冰数值模拟及回水管布置优化研究 |
| Numerical simulation of melting ice and optimal arrangement of return pipe in nuclear power plant |
| 投稿时间：2017-08-08 |
| DOI：10.13243/j.cnki.slxb.20170365 |
| 中文关键词: 融冰 相变温度带 回水管布置 引水渠道 核电站 |
| 英文关键词: melting ice return pipe arrangement structural optimization diversion channel nuclear power plant |
| 基金项目:天津市自然科学基金重点项目（13JCZDJC35100） |
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| 摘要点击次数: 1315 |
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| 中文摘要: |
| 寒区核电站在冬季引水过程中，为了防止水内冰对电站安全运行构成威胁，需要开展防冰设计和研究。利用机组冷却水提升引水渠道中的水温是目前比较理想的水内冰防治方法。本文针对紊流条件下水内冰相变计算难题，提出了紊动条件下水内冰相变计算方法，经过研究发现影响融冰效率的关键在于冷热水掺混时间。于是从结构和运行两个方面进行了优化，以促使冷热水掺混位置向上游方向移动，延长冷热水掺混时间，提高融冰效率。在本算例中，冷却水融冰效率随水内冰质量浓度的增加而增大，当水内冰质量浓度为0.84%时，相应的融冰效率为30%。 |
| 英文摘要: |
| In the cold area, it is necessary to conduct a research on anti-ice design for nuclear power plant during the winter diversion process. Using cooling water of the power station is an ideal method to raise the water temperature in the diversion channel. In this paper, the phase transition temperature band method is proposed for the turbulence condition. Through the research, it is found that the key to melting ice efficiency is to extend the mixing time. Thus, to improve the ice melting efficiency, optimization has been carried out in two aspects of structure and operation, facilitating the mixing position of hot and cold water to move upstream and extending the mixing time of them. In the present example,the ice-cooling efficiency of the cooling water increases with the increase of the ice concentration. When the ice concentra-tion is 0.84%,the corresponding ice-melting efficiency is 30%. |
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