| 题名 | 卧式蒸发冷却电机冷凝系统的研究; 卧式蒸发冷却电机冷凝系统的研究 |
| 作者 | 1张婷,电工研究所 |
| 学位类别 | 硕士 |
| 答辩日期 | 2005 |
| 授予单位 | 中国科学院电工研究所 |
| 导师 | 1熊楠,电工研究所 |
| 关键词 | 蒸发冷却电机 凝结传热系数 冷却介质 冷凝容量 evaporation-cooling motor condensation heat transfer coefficient coolant cooling capacity |
| 其他题名 | 卧式蒸发冷却电机冷凝系统的研究 |
| 学位专业 | 电机与电器 |
| 中文摘要 | 蒸发冷却是一种高效可靠的电机冷却方式。卧式电机采用蒸发冷却技术还存在许多需要解决的问题。蒸发冷却技术所涉及的流体和传热理沦是非常复杂的，各科，不同的应用环境需要通过一系列实验来确定与该环境相适应的各种参数。本文以水平光滑单管为基础，研究了不凝气体对凝结传热的影响，并运用实验结果刘一传热模型进行了修正，将其修正计算式运用于光滑管束得到了很好的验证。本文还重点研究和测试了不同冷凝管(光滑管与螺纹管)在不同冷却介质(氟利昂CFC-113与新型环保介质VertrelXF)下的凝结传热特性，并对实验结果进行了比较与分析。实验结果表明：螺纹管有强化换热的作用，新介质VertrelXF在传热性能上能很好的替代氟利昂CFC-113。为了进一步完善蒸发冷却技术的相关研究，本文针对卧式电机的蒸发冷凝系统，研究了其冷凝容量问题。通过建立冷凝容量模型，从理论上研究了冷凝系统的冷凝容量，并利用组内一台定子浸润式蒸发冷却异步发电机的定子模型进行了实验，验证了理论分析结果。考虑到卧式蒸发冷却电机采用薄壁密封套筒的安全性，在模型上进行了套筒破损实验，研究了电机甩负荷，冷凝器断水工况下的冷凝系统的安全性能。 Evaporation-cooling is a kind of new cooling technique with high efficiency and safety, which can be applied to the horizontal motor. But a lot of problems need to be solved. The hydrodynamics and heat transfer theory related to the evaporation-cooling are very complex. A series of experiments should be made to find out various parameters adapted to different working conditions. This paper studies the effect of noncondensable gases on the heat transfer performance of single horizontal smooth tube. The experimental results are used to amend heat transfer model and calculation formulas which proved to be correct by applying to a group of smooth tubes. The paper mainly researched on the condensation heat transfer characteristics of different condensation tubes (smooth tubes and thread tubes) and different coolant (CFC-113 and Vertrel XF). The experimental data were analyzed and comparisons between each other were performed. The results show that thread tube can enhance condensation heat transfer and Vertrel XF is a good CFC alternative if only considering heat transfer performance. In order to perfect evaporation-cooling technology, this paper studies the cooling capacity of motor's condensing system and correlative experiments are made on the model of an evaporation-cooling asynchronous turbo generator. Considering the safety of motor, the experiment on the break of stator's cylinder sleeve was conducted. The reliability of condensing system was discussed. |
| 语种 | 中文 |
| 公开日期 | 2010-10-18 |
| 页码 | 63 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.iee.ac.cn/handle/311042/7411]  |
| 专题 | 电工研究所_其他部门_其他部门_硕士学位论文 |
| 推荐引用方式 GB/T 7714 | 1张婷,电工研究所. 卧式蒸发冷却电机冷凝系统的研究, 卧式蒸发冷却电机冷凝系统的研究[D]. 中国科学院电工研究所. 2005. |
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