|
|
中国电机工程学报 2008, 28(17) 82-86 DOI:
ISSN: 0258-8013 CN: 11-2107/TM |
|
|
|
|
本期目录 |
下期目录 |
过刊浏览 |
高级检索
[打印本页]
[关闭] |
|
| 动力机械与工程 |
|
|
大容量火电机组固液两相流离心泵数值分析及结构优化 |
|
|
梁双印 胡三高 樊晓芳 曹蕤 徐鸿 |
|
|
电站设备状态监测与控制教育部重点实验室(华北电力大学) 电站设备状态监测与控制教育部重点实验室(华北电力大学) 电站设备状态监测与控制教育部重点实验室(华北电力大学) 电站设备状态监测与控制教育部重点实验室(华北电力大学) 电站设备状态监测与控制教育部重点实验室(华北电力大学) |
|
|
摘要：
广泛应用于300及600 MW等大容量火电机组的固液两相流离心泵，由于其输送介质的特殊性，在运行中存在磨损严重以及效率低下等问题，而对泵性能产生影响的主要因素包括泵输送介质的特性和泵体几何结构因素。该文具体分析了泵体结构因素如蜗壳喉部面积、叶片数、叶片包角等对火电厂固液两相流离心泵性能的影响，并以此为依据，对其进行结构优化设计，然后通过选取合理的模型以及控制方程，借助于Fluent软件对改进后的泵内流场进行数值模拟，验证优化设计的效果。模拟结果显示，优化设计后的固液两相流离心泵达到了额定出力，效率有显著提高。 |
|
|
关键词：
固液两相流
离心泵
结构优化
数值模拟
|
|
|
Numerical Analysis and Structure Optimization of Solid-liquid Two-phase Flow Centrifugal Pump in Large Capacity Power Station |
|
|
LIANG Shuang-yin HU San-gao FAN Xiao-fang CAO Rui Xu Hong |
|
|
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University) Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University) Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University) Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University) Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (North China Electric Power University) |
|
|
Abstract:
Solid-liquid two-phase flow centrifugal pumps are widely applied in large capacity power stations of 300 or 600 MW, and the particularity of the medium stired by the pumps induces several problems in operation, such as severe wear and low efficiency. The main factors influencing the performance of solid-liquid two-phase flow centrifugal pumps consist of geometric structure and medium characteristics. The influence of geometric structure was concretely analyzed, such as the area of volute throat, number of blades and blade wrap angle. On this basis, an optimizing design was made for an existing pump, and then the flow field inside the pump after optimization was simulated on the basis of reasonable model and control equation by software Fluent. Meanwhile, the optimization effect was verified. The result shows that the pump after optimizing design achieves the rated output, and its efficiency improves remarkably. |
|
|
Keywords:
solid-liquid two-phase flow
centrifugal pump
structure optimizing
numerical simulation
|
|
|
收稿日期 2008-03-03 修回日期 1900-01-01 网络版发布日期 |
|
|
DOI: |
|
|
基金项目:
|
|
|
通讯作者: 梁双印 |
|
|
作者简介: |
|
作者Email: gqcily@126.com;lsy0625@vip.sina.com |
|
|
| 参考文献： |
|
| 本刊中的类似文章 |
|
| Copyright by 中国电机工程学报 |
