Thermal-structural coupled analysis and improvement of the diaphragm compressor cylinder head for a hydrogen refueling station
Thermal-structural coupled analysis and improvement of the diaphragm compressor cylinder head for a hydrogen refueling station
复制标题
加氢站隔膜压缩机缸盖热结构耦合分析与改进
DOI：
10.1016/j.ijhydene.2019.10.199
复制
发表时间：
2020
影响因子：
7.2
通讯作者：
Xueyuan Peng
中科院分区：
文献类型：
--
作者：
Ting Wang;Xiaohan Jia;Xueying Li;Shengdong Ren;Xueyuan Peng
超高压比隔膜式压缩机应用于加氢站时，排气温度高达200℃以上，特别是大容量、大马力的隔膜式压缩机。考虑热应力，气缸盖的结构强度和变形对膜片压缩机的可靠性和效率至关重要。本文提出了一种热-结构耦合分析方法，在此基础上得到了膜片压缩机缸盖在高温高压条件下的变形和应力。并根据热-结构耦合分析得到的应力结果估计了气缸盖螺栓的疲劳寿命。为了验证数值结果，采用了实验方法。结果表明：在压缩机运行过程中，排气孔处温度最高，不仅会产生塑性变形，还会产生较大的应力集中，高热应力可达到材料的强度极限；因此，提出了一种结构改进，通过切割一个更大的孔并附加一个新的单独的阀门安装孔来降低排料孔区域的应力。进一步的应力分析表明，改进后的结构在同一区域的应力显著降低，保证了压缩机的安全运行。
When applied in the hydrogen refueling station, the diaphragm compressor with super-high pressure ratio will experience a high discharge temperature of over 200 °C, especially for that with large capacity and horsepower. Considering the thermal stress, the structural strength and deformation of the cylinder head are crucial to the reliability and efficiency of the diaphragm compressor. In this paper, a thermal-structural coupled analysis was proposed, based on which the deformation and stress of the diaphragm compressor cylinder head under high-temperature and high-pressure conditions were obtained. And the fatigue life of the studs on the cylinder head was also estimated based on the stress results obtained in the thermal-structural coupled analysis. The experimental method was conducted for verifying the numerical results. The results indicated that during the operation of the compressor, the temperature in the discharge holes was the highest, resulting in not only plastic deformation but also large stress concentration, and the high thermal stress could reach up to the strength limit of the material. A structural improvement was therefore proposed to decrease the stress in the region of the discharge holes by cutting a larger hole and attaching a new separate one for valve installation. Further stress analysis showed that the stress in the same region of the improved structure was significantly reduced, which guaranteed the safety of the compressor.
登录
查看更多内容
影响因子：
--
作者：
Jinsong Zhang;T. Fisher;P. Ramachandran;J. Gore;I. Mudawar
通讯作者：
Jinsong Zhang;T. Fisher;P. Ramachandran;J. Gore;I. Mudawar
影响因子：
7.2
作者：
X. Jia;Jiahao Chen;Han Wu;X. Peng
通讯作者：
X. Jia;Jiahao Chen;Han Wu;X. Peng
影响因子：
7.2
作者：
J. Weinert;Liu Shaojun;J. Ogden;Ma Jian-xin
通讯作者：
J. Weinert;Liu Shaojun;J. Ogden;Ma Jian-xin
DOI：
--
发表时间：
2010
期刊：
Lubrication Engineering
影响因子：
--
作者：
Cheng Haifeng;W. Weimin;Wang Yandong;Hansheng Li
通讯作者：
Cheng Haifeng;W. Weimin;Wang Yandong;Hansheng Li
影响因子：
7.2
作者：
Hu Yuanlin;Xu Xiaoying;Wang Wen
通讯作者：
Wang Wen