安全、健康和环境2024，Vol.24Issue(12)：14-20,7.DOI:10.3969/j.issn.1672-7932.2024.12.003
储罐重力式呼吸阀超压流固耦合动态模拟及验证
Dynamic Simulation and Verification on Overpressure Fluid-solid Coupling of Gravity Breathing Valve in Storage Tank
摘要
Abstract
Breathing valves are important safety ac-cessories for storage tanks,and the development and application of low-pressure breathing valves are key to avoiding tank collapse or swelling accidents.A coaxi-al steady flow,independent dual outlet breathing valve body structure was designed to address the situ-ation where the overpressure value of most breathing valves used in China was≥40%.A gravity breathing valve overpressure fluid solid coupling calculation model was established,and the pressure/vacuum end take-off process of the breathing valve was simulated and experimentally studied.The results showed that:①The pressure end/vacuum end completed the take-off within 0.34 s and 0.41 s respectively,and the take-off process of the pressure valve disc showed an acceleration linear gentle trend,while the take-off process of the vacuum valve disc showed a linear gen-tle trend.② The prototype developed based on simula-tion results showed that due to the large surface rough-ness,the friction loss of the airflow increased.When the overpressure value was 10%,the measured average air flow rates at the pressure end and vacuum end were 1 820 m3/h and 902 m3/h,respectively,with errors of 1.6%and 2.6%from the calculated values,meeting the requirements of the rated air flow rate.The calcula-tion results of the overpressure flow field of the breath-ing valve were relatively accurate,which can provide guidance for the design and calculation of other sizes of breathing valves and emergency relief valves.关键词
储罐/重力式呼吸阀/超压值/流固耦合/动态模拟/试验研究Key words
storage tank/gravity breathing valve/o-verpressure value/fluid-solid coupling/dynamic sim-ulation/experimental study分类
能源科技引用本文复制引用
程龙军,刘娟,张红星,孙明源..储罐重力式呼吸阀超压流固耦合动态模拟及验证[J].安全、健康和环境,2024,24(12):14-20,7.基金项目
中国石化科技部项目(322132),常压储罐长时耐烧超低泄漏呼吸阀研发 （322132）
中国石化科技部项目(324026),储罐新型通气附件及在线监检测技术研发. （324026）
