Pipeline leak detection technologies have been playing a crucial role in protecting the safety of pipeline delivery. However, there is a lack of effective leak detection solutions for high-density interwoven pipelines in high-value industrial equipment and facilities. To tackle this challenge, we have focused on developing a quartz resonant pressure transducer with high sensitivity and high resolution for detecting leaks in the mentioned pipeline. The pressure-sensitive resonator achieves a high-quality factor of 1,041,555 with a series resonance frequency of 7220.3 kHz. The fabricated resonator is packaged with a customized crystal oscillator circuit using a stainless-steel housing. The packaged pressure transducer provides a typical sensitivity of 368.4 Hz/MPa, a resolution of 0.00025 %, and an accuracy of 0.02 % over a 40 MPa full scale. As a test bed for leak detection, a section of interwoven nylon pipeline with an adjustable length of up to 200 m is constructed. Novel leak detection algorithms based on high-quality pressure-sensitive signals are developed. Signal analysis demonstrates that the transducer can capture critical leak information, i.e., identifying the leak, assessing leak velocity, locating the leak, predicting dynamic leak, and detecting a tiny leak. The measurement results indicate that, based on the superior performance of the reported pressure transducers, it is feasible to construct an early and accurate health monitoring system for a complex pipeline network.

中文翻译：

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使用高灵敏度和高分辨率石英压力传感器进行高密度交织管道泄漏检测


管道泄漏检测技术在保护管道输送安全方面发挥着至关重要的作用。然而，对于高价值工业设备和设施中的高密度交织管道，缺乏有效的泄漏检测解决方案。为了应对这一挑战，我们专注于开发一种具有高灵敏度和高分辨率的石英谐振压力传感器，用于检测上述管道中的泄漏。压敏谐振器实现了 1,041,555 的高质量因数，串联谐振频率为 7220.3 kHz。制造的谐振器采用不锈钢外壳与定制的晶体振荡器电路封装。封装压力传感器的典型灵敏度为 368.4 Hz/MPa，分辨率为 0.00025 %，在 40 MPa 满量程范围内精度为 0.02 %。作为泄漏检测的测试台，建造了一段长度可达 200 m 的交织尼龙管道。开发了基于高质量压敏信号的新型泄漏检测算法。信号分析表明，传感器可以捕获关键的泄漏信息，即识别泄漏、评估泄漏速度、定位泄漏、预测动态泄漏和检测微小泄漏。测量结果表明，基于所报道的压力传感器的卓越性能，为复杂管网构建早期和准确的健康监测系统是可行的。