涡轮机匣换热实验

张书华; 张丽; 朱惠人; 许都纯

涡轮机匣换热实验

西北工业大学动力与能源学院,西安 710072

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出版历程
- 收稿日期: 2010-04-28
- 修回日期: 2010-07-22
- 刊出日期: 2011-05-28

Experimental investigation of heat transfer characteristic in turbine casing

School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 为了得到涡轮机匣内部壁面的换热规律,用瞬态液晶测量方法对某型涡轮机匣上表面的换热分布进行了全表面测量.机匣具有包括冲击、凹槽、阵列孔抽吸等的复杂结构,实验结果表明,射流冲击是造成上表面传热系数增强的主要因素,在冲击影响区域换热较强,其余区域换热较弱.实验结果对涡轮机匣内部流动换热计算、温度场计算、叶尖间隙控制具有重要的参考价值.
- 涡轮机匣 /
- 换热 /
- 射流冲击 /
- 叶尖间隙 /
- 热色液晶 /
- 瞬态
Abstract: The heat transfer coefficient distribution of the turbine casing inner surfaces was studied experimentally by utilizing transient thermochromic liquid crystal technique.The casing investigated is composed of complex structure including impingement hole and dimples.Experiment results show that the jet impingement is a main contributing factor to heat transfer enlargement.The heat transfer coefficient near the exit hole and the impingement region is higher than others.The experiment results are helpful to the calculation of turbine casing temperature field and the control of blade tip clearance.
- turbine casing /
- heat transfer /
- jet impingement /
- blade tip clearance /
- themochromic liquid crystal /
- transient

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参考文献(12)

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