| 一级泵变流量空调系统部分负荷下循环水泵运行工况分析 |
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| 引用本文： | 刘何清,刘传聚.一级泵变流量空调系统部分负荷下循环水泵运行工况分析[J].湖南科技大学学报(自然科学版),2001,16(3):28-31. |
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| 作者姓名： | 刘何清 刘传聚 |
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| 作者单位： | 1. 湘潭工学院资源工程系
2. 同济大学热能工程系 |
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| 摘 要： | 围绕空调系统循环水泵在部分负荷下运行常见故障,将空调系统负荷变化分为负荷渐变和负荷突变2种情况,对一级泵变流量系统循环水泵运行工作点的变化进行了分析,结果是在负荷渐变情况下,只要水泵选型合理,不会出现循环水泵运转异常;在负荷突变情况下,循环水泵过载或不能启动的原因是由于系统阻力特性系数变化与水泵设计扬程下联合运转工作点对应的阻力特性系数不匹配,造成水泵实际工作点发生偏移,超出水泵的合理工作范围引起的.并提出了为保证部分负荷下水泵正常运转,对系统设计和水泵选型的要求.图3,表1,参6.
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| 关 键 词： | 部分负荷 循环水泵 运行工作点 阻力特性系数 |
| 文章编号： | 1000-9300(2001)03-0028-04 |
| 修稿时间： | 2001年2月12日 |
The analysis of the running condition of the circulating pump with the variable flow part loaded in air-conditioning system |
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| LIU He qing ,LIU Chuan ju.The analysis of the running condition of the circulating pump with the variable flow part loaded in air-conditioning system[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2001,16(3):28-31. |
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| Authors: | LIU He qing LIU Chuan ju |
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| Institution: | LIU He qing 1,LIU Chuan ju 2 |
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| Abstract: | According to the common troubles in circulation pump in air conditioning systems under part load, the load changes is divided into two kinds: gradually changing load and suddenly changing load. The change of the working point of the circulation pump in variable flow system of the one stage pump is analyzed, the circulation pump will work normal as long as the pump is correctly selected under gradually changing load.Under suddenly changing load, when the change of characteristic coefficient of the obstruction of the system is not well matched with corresponding combined running points, the designed pumping head of the pump which is beyond the reasonable working scope of the pump.This is the reason why the circulation pump is overloaded or unworkable. Moreover, this paper puts forward the requirements for the system design and the pump selection in order to ensure the normal running under part load.3figs.,1tab.,6refs. |
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| Keywords: | partial load circulating water pump working point the characteristic coefficient of the obstruction |
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