| 摘要: |
| 通过对蒸气压缩式制冷系统现场检漏的观测,发现保压试验满足国家标准GB50274-98《制冷设备、空气分离设备安装工程施工及验收规范》的合格判据时,发泡试验还有检出漏孔的可能。针对这一现象,对发泡和保压试验的不同作用,以及GB50274-98关于保压试验的漏率判据进行分析。结果表明,GB50274-98关于测定压力降不大于试验压力值的1%为合格的相对漏率判据对系统整体泄漏的限制要求偏低,也不能有效控制大容积被测系统粗漏漏孔的出现几率。进一步研究指出,通过保压试验可以直接评价系统整体漏率和对制冷系统运行中的制冷剂非事故耗损进行评估。同时提出现场保压试验应提高压力表精度和延长保压时间,以获得更准确的试验数据。研究可为提高制冷系统现场检漏质量和改进评定方法提供参考。 |
| 关键词: 热工学 制冷系统 压力试验 泄漏评价 |
| DOI：10.3969/j.issn.0253-4339.年份（4位数字）.月份（2位数字）.文章的起始页码（3位数字） |
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| 基金项目: |
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| Research and Applications of Pressure Test for Vapor Compression Refrigeration System |
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Liu Chengyi Luo Ximu Hu Jia Li Ling
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| (Liu Chengyi1 Luo Ximu 2 Hu Jia3 Li Ling1(1.Sichuan College of Architectural Technology,Deyang,618000,China,2.Sichuan Chemical Construction Co.Ltd.,Guanghan,618300,3.Chengdu Industrial Equipment Installation Co,Chengdu,610071,China)) |
| Abstract: |
| The observation of leak detection on site for vapor compression refrigeration system showed that foamy leaks might be found by foamy test,even when maintaining pressure test met the requirement of national standard GB50274-98 code for construction and acceptance of refrigeration and air separation equipment installation engineering.To address this issue,different effects of foam and maintaining pressure test,as well as leakage rate criterion for maintaining pressure test in GB50274-98 were studied.It is sho... |
| Key words: Pyrology Refrigeration system Pressure test Leakage evaluation |
