低温盲支管诱发水击振动的实验研究
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摘要
低温加注管路系统难以避免存在盲支管结构,当系统中发生参数突变时,会存在诱发低温盲支管填充水击振动现象。本文从实验角度探索诱发低温盲支管填充水击振动的成因,结果表明:当盲支管处于热态时,通过对盲支管进行排气扰动,可诱发低温液体填充盲支管水击振动;管路系统的背压越高,盲支管水击振动压力值越大。
There is unavoidable to be blind branch tubes in cryogenic filling pipeline system under certain operation process.When system parameters,such as the system pressure and flow rate,are changed suddenly,the water hammer phenomenon is induced by the cryogenic liquid filling the blind branch tube. This paper mainly studied a method of water hammer induced by the cryogenic liquid filling the blind branch tube by experiment. The experimental results show that when the blind branch tube is in hot state,the cryogenic liquid filling blind tube water hammer will be induced by exhausting from the top area of the blind branch tube; the higher the back pressure of the piping system is,the larger the water hammer vibration pressure of the blind branch tube is.
There is unavoidable to be blind branch tubes in cryogenic filling pipeline system under certain operation process.When system parameters,such as the system pressure and flow rate,are changed suddenly,the water hammer phenomenon is induced by the cryogenic liquid filling the blind branch tube. This paper mainly studied a method of water hammer induced by the cryogenic liquid filling the blind branch tube by experiment. The experimental results show that when the blind branch tube is in hot state,the cryogenic liquid filling blind tube water hammer will be induced by exhausting from the top area of the blind branch tube; the higher the back pressure of the piping system is,the larger the water hammer vibration pressure of the blind branch tube is.
引文
[1]Moore W I,Arnold R J.土星V的液氧加注故障[J].导弹与航天运载技术,1979(2):69-74.
[2]尼˙瓦˙菲林,亚˙波˙布拉诺夫.液体的低温系统[M].北京:低温工程编辑部,1993.
[3]刘照智,丁鹏飞,田青亚.液氢加注系统水击问题数值分析[J].导弹与航天运载技术,2010(4):10-12.
[4]Paula P B. Numerical and experimental investigation of the water hammer in feed lines of satellite rocket engines[J]. Journal of Propulsion and Power,2007,23(5):763-774.
[5] Alok Majumdar,Todd Steadman. Numerical modeling of thermofluid transients during chilldown of cryogenic transfer lines[C]//SAE Technical Papers,2003:1-16.
[6]程谋森,刘昆,张育林.低温推进剂供应管路预冷充填瞬变流计算[J].推进技术,2000,21(5):38-41.
[2]尼˙瓦˙菲林,亚˙波˙布拉诺夫.液体的低温系统[M].北京:低温工程编辑部,1993.
[3]刘照智,丁鹏飞,田青亚.液氢加注系统水击问题数值分析[J].导弹与航天运载技术,2010(4):10-12.
[4]Paula P B. Numerical and experimental investigation of the water hammer in feed lines of satellite rocket engines[J]. Journal of Propulsion and Power,2007,23(5):763-774.
[5] Alok Majumdar,Todd Steadman. Numerical modeling of thermofluid transients during chilldown of cryogenic transfer lines[C]//SAE Technical Papers,2003:1-16.
[6]程谋森,刘昆,张育林.低温推进剂供应管路预冷充填瞬变流计算[J].推进技术,2000,21(5):38-41.