基于COMSOL的高温双端面机械密封热力耦合分析
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摘要
针对输送高温气体介质的大轴径风机所采用的液体润滑双端面机械密封开展热力耦合分析研究,具有重要的工程实际意义。将动静密封环视为一体并采用参数化扫描功能对密封结构参数进行优化分析。研究表明:在高温、低压工况下,高温介质热传导对介质侧密封温度场的影响占主导;对介质侧的密封结构设计,不仅要从减少端面产热的角度出发,而且要对密封环进行有效地冷却降温。
For the liquid lubricated double end face mechanical seal for large shaft diameter steam blower that transmits hightemperature gas media,thermal coupling analysis and research were carried out,which is of important engineering significance.The rotating and stationary seal rings were considered as a whole,and parameterized scanning function was used to conduct optimization analysis of the structural parameters of the seal. The research results show that under the condition of high temperature and low pressure,the influence of heat conduction of high temperature medium on the temperature field of the seal on the medium side was dominant. The structural design of the seal ring on the medium side should not only start from the angle of reducing the heat generation on the end face,but also should take steps to effectively lower the temperature.
For the liquid lubricated double end face mechanical seal for large shaft diameter steam blower that transmits hightemperature gas media,thermal coupling analysis and research were carried out,which is of important engineering significance.The rotating and stationary seal rings were considered as a whole,and parameterized scanning function was used to conduct optimization analysis of the structural parameters of the seal. The research results show that under the condition of high temperature and low pressure,the influence of heat conduction of high temperature medium on the temperature field of the seal on the medium side was dominant. The structural design of the seal ring on the medium side should not only start from the angle of reducing the heat generation on the end face,but also should take steps to effectively lower the temperature.
引文
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[2]Chin-Hsiu Li.Thermal deformation in a Mechanical Face Seal[J].ASLE Transactions,1976,19(2):146-152.
[3]丁思云,李鲲,吴兆山,等.斜直深槽机械密封环端面变形研究[J].润滑与密封,2012,37(2):88-91.
[4]何永明,穆塔里夫·阿赫迈德,刘毅龙.油泵用机械密封摩擦副界面热-结构耦合分析[J].流体机械,2014,42(6):21-25.
[5]魏龙,顾伯勤,刘其和,等.接触式机械密封端面平均温度耦合计算方法[J].化工学报,2014,(9)
[6]丁雪兴,陈德林,张伟政,等.机械密封环热应力的有限元计算及分析[J].化工机械,2007,34(1):19-21.
[7]赵文元,穆塔里夫·阿赫迈德,田雪峰.极端工况机械密封波纹管结构-热耦合失效分析[J].流体机械,2018,46(5):21-24.
[8]李莹,姜旭强,杨静.待机过程中机械密封镶装静环的蠕变分析[J].流体机械,2018,46(6):10-16.
[9]张季,赵国忠,张皓,等.基于精细螺栓模型的爆破阀热固耦合密封性能分析[J].压力容器,2018,35(2):13-23.
[10]李香,沈宗沼,杨博峰,等.高温蒸汽风机用机械密封的研制[J].液压气动与密封,2016,36(4):31-33.
[11]孙星星,孟祥铠,周国忠,等.侧入式单端面机械密封摩擦副温度场的研究[J].流体机械,2017,45(7):1-6.
[12]熊佳,雷玉勇,杨志峰,等.基于ANSYS的高压机械密封温度场理论研究[J].润滑与密封,2007(4):123-126.
[13]彭旭东,顾永泉.不同相态机械密封的性能计算[J].流体机械,1994(8):20-24.
[14]彭旭东,谢友柏,顾永泉,等.热流体动力楔机械密封性能参数的近似计算[J].流体机械,1997,33(6):24-27.
[15]杜平安.有限元网格划分的基本原则[J].机械设计与制造,2000(1):34-36.
[16]李维特.热应力理论分析及应用[M].北京:中国电力出版社,2004.