摘要
海底输气管道微泄漏检测对海洋工程安全至关重要。声学成像仪器是实现海底输气管道微泄漏检测的重要手段,然而传统技术在复杂浅水环境中检测精度不足,难以早期识别微泄漏。为此,设计了一种基于多波束前视声学成像技术的高精度的水下声学成像仪器,通过在回波域利用回波与混响、回波与噪声之间统计特性的差异实现回波与干扰信号的分离,进而从回波域获取管道以及泄漏区域的强度特征。仪器可利用回波域和图像域的融合处理,实现微泄漏的检测,并根据气泡程度和泄漏速度估计泄漏量。实验结果表明,设计和研制的声学成像仪器能够判断气泡密集程度,检测出气泡微泄漏并对微泄漏位置定位。对于存在射流状态,压力为3 MPa,泄漏孔径为0.5 mm,微泄漏量远小于0.5%的情况,仪器能够在10 m距离处进行清晰检测。在海底管道及水下生产系统微泄漏检测领域具有较大的潜在应用。
Micro leakage detection of subsea gas pipelines is crucial for the safety of marine engineering.Acoustic imaging instruments are an important means of detecting micro leaks in underwater gas pipelines.However,traditional techniques have insufficient detection accuracy in complex shallow water environments,making it difficult to identify micro leaks early.Therefore,this article designs a high-precision underwater acoustic imaging instrument based on multi beam forward-looking acoustic imaging technology.By utilizing the statistical differences between echo and reverberation,echo and noise in the echo domain,the separation of echo and interference signals is achieved,and the intensity characteristics of pipelines and leakage areas are obtained from the echo domain.This instrument can use the fusion processing of echo domain and image domain to detect micro leaks,and estimate the leakage amount based on the degree of bubbles and leakage speed.The experimental results show that the designed and developed acoustic imaging instrument can determine the density of bubbles,detect micro leaks of bubbles,and locate the location of micro leaks.For situations where there is a jet state,the pressure is 3 MPa,the leakage aperture is 0.5 mm,and the micro leakage amount is much less than 0.5%,this instrument can perform clear detection at a distance of 10 m.It has great potential applications in the field of micro leak detection in submarine pipelines and underwater production systems.
作者
蒋晓斌
刘海超
罗懿
曲杰
Jiang Xiaobin;Liu Haichao;Luo Yi;Qu Jie(Tianjin Key Laboratory of Submarine Pipeline,Tianjin 300451,China;CNOOC Energy Technology&Services Limited Key Laboratory of Safety Service Guarantee Technology for Submarine Pipelines,Tianjin 300451,China;CNOOC(Tianjin)Pipeline Engineering Technology Co.,Ltd.,Tianjin 300451,China)
出处
《电子测量与仪器学报》
北大核心
2025年第7期98-106,共9页
Journal of Electronic Measurement and Instrumentation
基金
国家重点研发计划(2022YFC2806101)项目资助。
关键词
海底管道
微泄漏检测
声学成像
仪器研发
offshore pipeline
micro-leakage detection
acoustic imaging technology
research and development
