Determining the position of hydrate blocks in gas pipelines by a radiowave method

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• 作者：A. G. Zherlitsyn ; V. P. Shiyan
• 关键词：gas pipeline ; methane ; hydrate block ; microwave pulse ; reflectometry
• 刊名：Russian Journal of Nondestructive Testing
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：52
• 期：10
• 页码：594-599
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Characterization and Evaluation of Materials; Structural Materials;
• 出版者：Pleiades Publishing
• ISSN：1608-3385
• 卷排序：52

文摘

A radiowave method of detecting and positioning hydrate blocks in pipelines is considered. The method consists in probing a pipeline with a high-frequency nanosecond-duration radio pulse with subsequent measurement of its travel time to the hydrate block and back. Results of a natural experiment and flow charts of a device for determining the position of a hydrate block imitator (ice) in a stub pipe with a diameter of 273 mm. A Gunn diode is used as a generator of microwave pulses with a duration of 10 ns and a basic frequency of 10 GHz. The decay of microwave pulses in the pipe and the potential of the radiowave method are estimated.