| 杨冬甫,刘四平,王学科,翟凯悦.砂尘试验箱原理分析改进及相关标准探讨[J].装备环境工程,2023,20(6):133-140. YANG Dong-fu,LIU Si-ping,WANG Xue-ke,ZHAI Kai-yue.Principle Analysis and Improvement of Sand Dust Test Chamber and Discussion on Relevant Standards[J].Equipment Environmental Engineering,2023,20(6):133-140. |
| 砂尘试验箱原理分析改进及相关标准探讨 |
| Principle Analysis and Improvement of Sand Dust Test Chamber and Discussion on Relevant Standards |
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| DOI：10.7643/issn.1672-9242.2023.06.017 |
| 中文关键词: 环境试验 砂尘试验箱 吹尘 吹砂 闭式循环 开式吹砂 可变循环中图分类号:000 文献标识码:A 文章编号:1672-9242(2023)06-0133-08 |
| 英文关键词:environmental test sand dust test chamber dust blowing sand blowing closed cycle open sand blowing variable cycle |
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| Author | Institution |
| YANG Dong-fu | Hardy Technology International Ltd., Chongqing 401533, China |
| LIU Si-ping | Xi'an XICE Testing Technology Co., Ltd., Xi'an 710076, China |
| WANG Xue-ke | Xi'an XICE Testing Technology Co., Ltd., Xi'an 710076, China |
| ZHAI Kai-yue | Xi'an XICE Testing Technology Co., Ltd., Xi'an 710076, China |
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| 中文摘要: |
| 结合砂尘的产生和运动机理，对砂尘试验箱的设计原理和应用特点进行了说明，着重对吹砂程中空气的温度和湿度、砂尘颗粒直径比例进行了分析，对气固两相流中颗粒浓度的均匀性进行了探讨。基于砂尘的运动特性，国内应用较普遍采用的闭式循环吹砂试验设备，无法实现砂的有效分离，导致吹砂试验箱试验过程中颗粒直径比例不满足GJB 150.12A要求。在MIL-STD-810H中，已经取消了对吹砂试验相对湿度≤30%的要求。基于吹尘和吹砂引起的不同环境效应，结合吹尘和吹砂试验设备原理和国内已有设备的现状，对现有试验方法和校准规范的完善、砂尘试验箱的改进设计提出了建议和意见。同时文中也介绍了国外开式、闭式循环、可变循环等几种不同类型的砂尘试验箱作为参考，基于砂尘试验的破坏机理提出了砂尘试验箱的分类和选型建议。 |
| 英文摘要: |
| Combined with the generation and movement mechanism of sand dust, this paper explains the design principle and application characteristics of sand dust test chambers, focuses on the analysis of air temperature and humidity and sand dust particle diameter ratio during sand blowing, and probes into the uniformity of particle concentration in the gas-solid two-phase flow. Based on the movement characteristics of sand dust, the closed circulation sand blowing test equipment widely used in China can not effectively separate sand. As a result, the proportion of particle diameter in the test process of sand blowing test chamber does not meet the requirements of GJB 150.12a. In MIL-STD-810H, the requirement of relative humidity ≤30% for sand blowing test has been canceled. Based on the different environmental effects caused by dust and sand blowing, combined with the principle of dust and sand blowing test equipment and the current situation of existing equipment in China, suggestions and opinions on the improvement of existing test methods and calibration specifications and the improved design of sand dust test chambers are put forward. At the same time, this paper also introduces several different types of sand dust test chambers abroad, such as open, closed cycle and variable cycle, as a reference. Based on the failure mechanism of sand dust test, the classification and selection suggestions of sand dust test chambers are put forward. |
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