Explosion isolation systems provide critical protection for interconnected vessels and work areas, preventing the spread of explosions through interconnecting pipes and ducts. These systems not only prevent propagating events, but also mitigate the elevated explosion hazards of interconnected vessels, related to pressure piling and enhanced turbulence. Explosion isolation systems can, however, fail catastrophically when they are not properly designed for a use case.

Evaluating the performance of explosion isolation systems includes assessing their pressure resistance, flame-barrier efficacy, and determining appropriate installation distances, which typically requires extensive testing. To predict the performance of a system for use cases outside the tested conditions, models are needed to reliably predict both the explosion dynamics and the isolation system response.

In this study, a physics-based model for explosion dynamics in vented vessel-pipe systems is developed and validated. An extensive series of large-scale validation experiments were conducted, including tests using an 8 m³ vessel with attached pipes, varying the pipe dimensions, ignition location, and mixture reactivity. The model accurately captures the effects of experimental parameters and predicts the time available for isolation systems to form a flame barrier. This model can help to predict installation distances and reduce the number of tests needed to comprehensively evaluate explosion isolation systems and their use cases.

爆炸隔离系统为相互连接的容器和工作区域提供了重要的保护，可防止爆炸通过相互连接的管道和导管扩散。这些系统不仅可以防止传播事件，而且还可以减轻与压力堆积和湍流有关的互连容器爆炸危险性的升高。但是，如果爆炸隔离系统未针对用例进行适当设计，则可能会导致灾难性的故障。

评估隔爆系统的性能包括评估其耐压性，阻隔效果和确定适当的安装距离，这通常需要进行广泛的测试。为了在测试条件之外的用例中预测系统的性能，需要模型来可靠地预测爆炸动力学和隔离系统响应。

在这项研究中，开发并验证了基于物理学的排气管-管道系统爆炸动力学模型。进行了一系列广泛的大规模验证实验，包括使用带有连接管的8 m ³容器进行测试，改变管道尺寸，着火位置和混合物反应性。该模型可以准确捕获实验参数的影响，并预测隔离系统形成火焰屏障的可用时间。该模型可以帮助预测安装距离并减少全面评估爆炸隔离系统及其用例所需的测试次数。