Abstract:
In this paper, a new type of low cost, low risking, and detectable foam pig is proposed. The sensor mounted on the foam carrier captures the variation of the pipe diameter and positions the pipe by the gyro integrated in the circuit board. Its detection capability is similar with that of the traditional multi-functional detector of high cost. This article aims to describe how the new foam caliper works and how to design its structure to verify the reliability of key components in a lab environment. Special software was used to deal with the obtained raw data and with the visualization. Finally, in the field test, a comprehensive analysis of the data obtained from two tests on an 8 km pipeline was made and compared with the collected data of the "intelligent pig" in the traditional sense. The results showed that the gauge could provide more information about the pipeline structure, and had better sensitivity and additional functions.
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