基于AMEsim柱塞压力发生器液体压力传递特性研究

doi:10.3969/j.issn.1000-1158.2023.12.07

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摘要为得到压力发生器柱塞位移与输出压力的关系、实现对输出压力的精准控制,对压力发生系统进行数学建模。以AMEsim有效体积弹性模量模型为基础,建立新的油液含气量插值多项式函数,解决了在饱和蒸汽压力与空气分离压力中间位置的导数突变问题。仿真分析了空气含量与温度对系统压力传递过程的影响,结果表明系统受空气含量影响较大,受温度影响较小,且空气含量每增加0.5%,系统响应时间与稳定时间会滞后0.7s左右,柱塞用于压缩油液气泡的位移会增加20mm左右。对比仿真与实测结果知,压力发生系统受空气含量影响,升压段耗时与响应误差总体上均大于降压段,保压5s时各检定点的压力波动均在±0.03MPa范围内。

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	屠岩
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关键词 ：计量学, 压力表检定, 柱塞压力发生器, 有效体积弹性模量, 压力传递, AMEsim

Abstract：In order to obtain the relationship between the plunger displacement of the pressure generator and the output pressure, and to achieve the accurate control of the output pressure, the pressure generation system is first modeled mathematically. Then, based on the effective volumetric elastic modulus model of AMEsim, a new interpolation polynomial function of oil gas content is established to solve the derivative mutation problem in the middle position of saturated vapor pressure and air separation pressure. Then, the influence of air content and temperature on the system pressure transfer process is simulated and analyzed. The results show that the system is greatly affected by air content, but less affected by temperature. For every 0.5% increase in air content, the response time and stabilization time of the system will lag about 0.7seconds, and the displacement of the plunger used to compress the oil bubble will increase about 20mm. Finally, by comparing the simulation and measurement results, it is known that the pressure generation system is affected by the air content, the time consumption and response error of the booster section are generally greater than that of the buck section, and the pressure fluctuation of each measuring point is within the range of ±0.03MPa when the pressure is maintained for 5s.

Key words： metrology pressure gauge verification plunger pressure generator effective volumetric elastic modulus pressure transmission AMEsim

收稿日期: 2022-09-07 发布日期: 2023-12-27

PACS:

TB935

通讯作者: 朱海清(1965-), 男, 江西丰城人, 江南大学副教授, 硕士生导师,主要从事过程装备与控制工程领域的研究。Email: 809075521@qq.com E-mail: 809075521@qq.com

作者简介: 屠岩(1997-), 男, 江苏淮安人, 江南大学在读硕士研究生,主要研究方向为机械仪表(压力表)智能化检测。Email: 1790083082@qq.com

引用本文:

屠岩,朱海清,沈晓东,沈伟,方明. 基于AMEsim柱塞压力发生器液体压力传递特性研究[J]. 计量学报, 2023, 44(12): 1827-1833.
TU Yan,ZHU Hai-qing,SHEN Xiao-dong,SHEN Wei,FANG Ming. Research on Liquid Pressure Transfer Characteristics in Plunger Pressure Generator Based on AMEsim. Acta Metrologica Sinica, 2023, 44(12): 1827-1833.

链接本文:

http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2023.12.07 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2023/V44/I12/1827

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