双层金属网幕泡破压力特性的实验研究

doi:10.16183/j.cnki.jsjtu.2023.405

摘要/Abstract

摘要：

网幕通道式液体获取装置具有稳定、高效等优点,在未来低温推进剂的在轨贮存管理系统中有广阔应用前景.提高网幕的泡破压力以适应低温流体的低表面张力特性是一个重要的研究领域,单层网幕的泡破压力提升受到材料强度、输运效率等限制,目前面临瓶颈.对此,提出通过真空扩散焊接形成多层网幕以提升网幕泡破压力.以双层网幕为例,开展泡破压力测量实验,并与单层网幕进行对比分析.结果表明泡破压力在双层网幕上平均有10%~20%的提升,最大可达25%.该现象是双层网幕特征孔径的减小和Jamin效应两个因素导致的.针对不同双层网幕层间角度与泡破压力的关系展开实验,结果表明层间角度对泡破压力没有明显影响.这将为网幕通道式液体获取装置的设计和改进提供一个新的思路.

关键词: 多孔介质, 泡破压力, 优化设计, 分离, 测量

Abstract:

The screen channel liquid acquisition device (LAD) has advantages in terms of energy conservation, stability, and efficiency, making it a promising application candidate in the orbit storage management system of cryogenic propellants. Improving the bubble point pressure of the screen to adapt to the low surface tension characteristics of cryogenic propellants is an important area of research. However, the increase in bubble breaking pressure of single-layer mesh screens is constrainted by material strength, transportation efficiency, and system weight, posing significant challenges. A method of forming multi-layer mesh screens through diffusion bonding to enhance the bubble point pressure of the screen is proposed. Taking a double-layer screen as an example, experiments of bubble point pressure measurement are conducted and compared with the examination of single-layer screen. The results show that the bubble point pressure increases by 10% to 20% on the double-layer mesh screen. Additionly, the experiments on the screens with different inter-layer angles are also conducted, revealing that the inter-layer angles have no significant effect on the bubble point pressure. These findings provide a new direction for design of porous screens in liquid acquisition devices.

Key words: porous medium, bubble point pressure, optimal design, separation, measurement

中图分类号:

林奕霖, 王晔, 陈成成, 蔡爱峰, 杨光, 吴静怡. 双层金属网幕泡破压力特性的实验研究[J]. 上海交通大学学报, 2025, 59(5): 628-636.

LIN Yilin, WANG Ye, CHEN Chengcheng, CAI Aifeng, YANG Guang, WU Jingyi. Experimental Study on Characteristics of Bubble Point Pressure of Double-Layer Metal Screen[J]. Journal of Shanghai Jiao Tong University, 2025, 59(5): 628-636.

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网幕编号	第1层	第2层	层间角度/(°)
1	DT40×430
2	DT80×700
3	DT203×1 600
4	DT40×430	DT40×430	90
5	DT80×700	DT80×700	90
6	DT203×1 600	DT203×1 600	90
7	DT40×430	DT40×430	45
8	DT40×430	DT40×430	0

实验工质	密度/ (kg·m^-3)	表面张力/ (mN·m^-1)	与不锈钢平板接触角/(°)
水	998	72.8	70
HFE7500	1 614	15.4	0

网幕规格	数据来源	实验工质	泡破压力/Pa	有效孔径/μm	与本文误差/%
DT40×430	本文实验	HFE7500	511.83±22.62	120.58±5.20	—
	文献[23]	乙醇	—	107.38	-10.9
DT80×700	本文实验	HFE7500	1 000.60±22.48	61.59±1.40	—
	文献[23]	乙醇	—	53.45	-13.2
	文献[16]	丙酮和异丙醇	—	58.65	-4.8
DT203×1 600	本文实验	HFE7500	2 680.67±110.53	23.02±1.00	—
	文献[23]	乙醇	—	22.79	-1