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Leak location in pipelines using the impulse response function

机译：使用脉冲响应功能的管道泄漏位置

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Current transient-based leak detection methods for pipeline systems often rely on a good understanding of the system—including unsteady friction, pipe roughness, precise geometry and micro considerations such as minor offtakes—in the absence of leaks. Such knowledge constitutes a very high hurdle and, even if known, may be impossible to include in the mathematical equations governing system behavior. An alternative is to test the leak-free system to find precise behavior, obviously a problem if the system is not known to be free of leaks. The leak-free response can be used as a benchmark to compare with behavior of the leaking system. As an alternative, this paper uses the impulse response function (IRF) as a means of leak detection. The IRF provides a unique a relationship between an injected transient event and a measured pressure response from a pipeline. This relationship is based on the physical characteristics of the system and is useful in determining its integrity. Transient responses of completely different shapes can be directly compared using the IRF. The IRF refines all system reflections to sharp pulses, thus promoting greater accuracy in leak location, and allowing leak reflections to be detected without a leak-free benchmark, even when complex signals such as pseudo-random binary signals are injected into the system. Additionally, the IRF approach can be used to improve existing leak detection methods. In experimental tests at the University of Adelaide the IRF approach was able to detect and locate leaks accurately.
机译：当前在管道系统中基于瞬态的泄漏检测方法通常依赖于对系统的良好理解，包括不存在摩擦，管道粗糙度，精确的几何形状以及微小的考虑因素，例如较小的排放量。这样的知识构成很高的障碍，即使知道，也可能无法将其包含在控制系统行为的数学方程式中。一种替代方法是测试无泄漏系统以找到精确的行为，如果不知道该系统没有泄漏，则显然是一个问题。无泄漏响应可用作与泄漏系统行为进行比较的基准。作为替代方案，本文使用脉冲响应函数（IRF）作为泄漏检测的手段。 IRF提供了注入的瞬态事件与管道测得的压力响应之间的独特关系。此关系基于系统的物理特性，可用于确定其完整性。可以使用IRF直接比较完全不同形状的瞬态响应。 IRF将所有系统反射提炼为尖锐脉冲，从而提高了泄漏定位的准确性，并且即使在将诸如伪随机二进制信号之类的复杂信号注入系统时，也可以在没有无泄漏基准的情况下检测泄漏反射。另外，IRF方法可用于改进现有的泄漏检测方法。在阿德莱德大学的实验测试中，IRF方法能够准确地检测和定位泄漏。

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