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Development trend of ultrasonic gas flow measurement

Development trend of ultrasonic gas flow measurement

年时超声波原理测量已经开始了使用,而进入实用阶段约在 20 世纪 70 年代,但仍限于测量液体。 In 1928 , the ultrasonic principle of measurement had begun to be used, and entered the practical stage in the 1970s , but it is still limited to measuring liquids.  
90 年代,至今不到 10 年。 Used to measure gas flow in the 1990s , less than 10 years. 1 ),在天然气流量计量领域中,它犹如一颗耀眼的新星,备受国内外工程技术界的关注。 Because the gas ultrasonic flowmeter has many outstanding advantages that traditional flowmeters (orifice, turbine, vortex flowmeter, etc.) cannot compare (see Table 1 ), it looks like a dazzling star in the field of natural gas flowmetering. It has attracted much attention from the engineering and technical circles at home and abroad. 6 月在巴西召开的“ FOLMEKO2000 第十届流量测量国际学术讨论会”上,重点讨论了超声波流量计,该方面的论文数占论文总数的 29.4% ,接近 1/3 ;而历届讨论最多的有关差压式的论文数仅占 17.6% ,不再成为热点。 At the " FOLMEKO2000 Tenth International Symposium on Flow Measurement " held in Brazil in June 2000 , the focus was on ultrasonic flowmeters. The number of papers in this area accounted for 29.4% of the total number of papers , close to 1/3 ; The number of papers on differential pressure type accounted for only 17.6% , which is no longer a hot spot. From the development trend, due to the characteristics of high accuracy, stable and reliable performance, large range ratio, no detection parts in the pipeline, etc., in engineering applications and international trade, there is a tendency to replace traditional flow meters.  
10 余个国家已批准它为天然气贸易输送系统的计量仪表。 At present, more than 10 countries including the United States, Britain, the Netherlands, Germany, Canada, and Russia have approved it as a meter for the natural gas trade transmission system. It is understood that China is also technically responsible for this and has formulated standards. Taking the West-to-East Gas Transmission Project, one of the four major century projects in China as an example, the gas ultrasonic flowmeter has been used as the preferred meter for flowmetering after repeated flowmetering demonstrations. 100 亿元左右。 It is estimated that the investment in detection and control instruments for the first phase of the project will reach about 10 billion yuan. DN150~1000 的大中型天然气输配计量站约数百个, DN100 以下的流量计量所需仪表将以万计,流量计量投资约 10 亿元左右。 Flow measurement is an important detection parameter in the entire project. It is estimated that there are hundreds of large and medium-sized natural gas transmission and distribution measurement stations with pipelines of DN150 ~ 1000. The meter required for flow measurement below DN100 will be tens of thousands, and the investment for flow measurement will be about 10 About 100 million yuan. This huge market is a rare opportunity for instrument manufacturers!

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