摘要
在实际应用中,很多安装了爆破片装置的工况无法满足泄放系数法所规定的条件,而采用流体阻力系数法对爆破片装置的泄放能力进行计算,大尺寸、高压力的爆破片装置往往不具备试验条件,无法采用流阻系数测试装置获得相应的数据。为了解决此问题,建立爆破片装置泄放过程的数值模型,研究管道内的压力、速度和温度分布。结果表明,在泄放过程中,在爆破片装置所在处,管道内流体速度大、温度低、管壁温度较高。安装爆破片装置的管道内形成阻力的原因主要是由于爆破片位置的管道横截面发生了变化,流速增加,进而改变了流动状态。利用数值仿真计算结果可对试验范围进行扩充,计算不同规格爆破片装置的流阻系数值,为爆破片装置泄放能力的判定提供有效依据。
Many working conditions with bursting disc devices installed cannot meet the requirements of the discharge coefficient in practical applications,and the fluid resistance coefficient method is used to calculate the discharge capacity of the bursting disc devices.However,for large-sized and high-pressure rupture disc devices,the test conditions are often not available,and the corresponding data cannot be obtained by using the flow resistance coefficient test device.A numerical model for calculating the discharge process of bursting disc devices was established for studying the pressure,speed,and temperature in the pipe.By contrast experiments,the results show that during the discharge process,where the rupture disc device is located,the fluid velocity in the pipeline is large,the temperature is low,and the temperature of the pipe wall is high.The reason for the formation of resistance in the pipeline where the bursting disc device is installed is mainly due to the change of the cross-section of the pipeline at the position of the bursting disc,the increase of the flow rate,and the change of the flow state.By using the numerical simulation calculation results,the test range can be expanded,and the flow resistance coefficient values of the bursting disc devices of different specifications can be calculated,which provides an effective basis for the judgment of the discharge capacity of the bursting disc devices.
作者
孙少辰
叶陈
丁信伟
许国锋
SUN Shao-chen;YE Chen;DING Xin-wei;XU Guo-feng(Shenyang Institute of Special Equipment Inspection and Research,Shenyang 110179,China;Liaoning Academy of Safety Science,Shenyang 110016,China;School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China;School of Energy and Civil Engineering,Harbin University of Commerce,Harbin 150028,China)
出处
《石油化工设备》
CAS
2022年第3期18-24,共7页
Petro-Chemical Equipment
关键词
爆破片装置
流阻系数
数值仿真
泄放能力
bursting disc device
flow resistance coefficient
numerical simulation
discharge capacity
