摘要
我国在上个世纪60年代就已经开始从事空气洁净技术的研究,并开始制造空气过滤器。随着现代工业的发展,洁净技术的应用越来越广泛,过滤器等净化设备的检测标准也在不断发展。但是目前国内检测体系还不完善,国标中用于测试空气过滤器计重效率和容尘量的检测方法——人工尘计重法很长时间没有得到修订,存在很多缺陷,无法满足目前过滤器行业生产发展的需要。因此,在空气过滤器标准的修订工作中,解决计重法试验系统存在的问题,使其得以顺利、准确地进行对空气过滤器行业发展具有重要的意义。
本文对空气过滤器性能检测方法的发展和演变作了系统的回顾,对目前国内外标准中空气过滤器计重法进行了综述和分析,并指出国内现行空气过滤器计重法试验系统的不足,说明了研制新的人工尘和发尘装置、改进试验方法是解决问题的关键。
为此,本课题首先建立了适合于计重法实验用的试验台;其次,进行了新的人工尘的研制,并得到了初步的尘样;再次,设计和制作了新的人工尘发尘装置,并通过实验检验了新的人工尘发尘装置的性能,证明了它满足计重法试验的要求;最后,在现有的基础上,对试验方法提出了一些改进,并通过实验论证了改进的准确性。
本课题解决了空气过滤器计重法试验系统中存在的一些不足,为空气过滤器国家标准的修编提供重要的试验依据,从而规范促进空气过滤器行业的发展。
Study on the technology of air cleaning started at 1960s’, and air filters began to be produced since that time in China. With the rapid development of modern industries, the application of air cleaning technology is more and more popular, and the testing standard for purification device such as air filters is progressed. However, the testing system is unperfect at present, and the gravimetric method for arrestance and dust-holding capacity hasn’t been revised for years in the national standard, it already doesn’t reach the practical needs of the air filter industry. So, it’s important to solve the defects of the gravimetric method in the revision of the national standard.
This paper reviews the development and evolvement of the performance testing method for air filter, introduces and analyses the recent situation of using and studying this technology all over the world, and points out the defects of the testing method at present, explains that developing new synthetic dust and generator, improving the testing method are the key points.
Therefore, in this paper, the test-bed for the gravimetric method is set up firstly; in the next place, new synthetic dust is developed and the sample has been achieved; again, new dust generator is designed and processed and its generating performance is tested; finally, two betterments of the testing method are executed and it is proved reasonably.
This paper solves some defects of the gravimetric method. The research results are helpful to the revision of China’s national standard. It is beneficial to the development of the air filter industry.
引文
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