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我国自来水管道结垢和清理问题的研究早在六十年代即已开始。但由于各种原因,这方面的技术发展还是较为缓慢的。目前仅在个别城市中用机械刮削大口径管道积垢,用压缩空气吹扫以及试用大流量水冲洗等方法除垢,而绝大部分管道尚无有效的清垢方法。特别是对小口径管线,一般被认为“三十年、四十年应该报废”。说明小口径管线清管在我国基本上还处于空白。为解决这方面的问题,我们曾对一条6英寸供水管线进行了清管实践,现将有关情况介绍如下,供参考。
The research on scaling and cleaning problems of tap water pipes in our country began as early as the 1960s. However, due to various reasons, the technological development in this area is still relatively slow. Currently only in some cities with mechanical scraping large-caliber pipe fouling, with compressed air purge and try large flow of water washing and other methods of descaling, and most of the pipeline there is no effective cleaning method. Especially for small-caliber pipelines, it is generally considered “thirty or forty years should be scrapped.” That small-caliber pipeline pigmentation in our country is still basically blank. To solve this problem, we have conducted a pigging practice on a 6-inch water supply pipeline. The relevant information is as follows for reference.