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1.发明公开Method and apparatus for simulating electrical characteristics of a coated segment of a pipeline 有权用于模拟的涂覆管电源段的电特性的方法和装置
公开(公告)号：EP2392911A1
公开(公告)日：2011-12-07
申请号：EP11169511.0
申请日：2009-10-30
IPC分类号： G01N17/02
CPC分类号： G01N17/02
摘要： Method and apparatus for simulating electrical pipe-to-soil impedance of a coated segment of a pipeline includes simulating a current injection point to a buried pipe section, simulating a first output signal from a magnetometer positioned at a first location over the buried pipe section, simulating a second output signal from a magnetometer positioned at a second location over the buried pipe section, simulating bonding of pipe coating of the pipe section, and simulating soil resistance of a soil environment surrounding the buried pipe section. The invention includes both field-test simulation with calibration pipe samples, and bench-test simulation using electronic simulation of the pipe coating. The simulations may be used for test and general calibration of MEIS pipeline coating inspection systems.
摘要翻译： 用于模拟电管到土壤阻抗的管道的涂覆段的方法和设备，包括模拟电流注入点的埋入管段，模拟从在第一位置上埋设管部定位的磁力计的第一输出信号， 模拟从在埋入管部的第二位置定位的磁力计的第二输出信号，模拟管段的管道涂层的粘合，并模拟周围埋设管截面的土壤环境的防污性。 本发明包括使用管道涂层的电子模拟Bothfield测试模拟与校准管的样品，和台架测试模拟。 该模拟可以用于测试和MEIS管道涂层检查系统的一般校准。
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2.发明公开Method and apparatus for estimating the condition of a coating on an underground pipeline 审中-公开装置和方法用于评估地下管道的涂层的状况
公开(公告)号：EP2372354A3
公开(公告)日：2011-12-07
申请号：EP11169508.6
申请日：2009-10-30
CPC分类号： G01N17/02
摘要： Methods are provided for reducing interference from stray currents in buried pipelines/metal structures during MEIS testing or other current-sensing applications in the pipeline. Methods are also provided for measuring bulk complex electrical impedance between a buried pipe and the soil, thereby rendering an indication of the quality of the anti-corrosive coating. Methods are also provided for measuring the complex propagation constant of AC voltages propagating along an attenuative pipeline. This information is useful for assessing the general condition of the anti-corrosive coating involved, or to enhance MEIS inspection of the pipeline. Methods are also provided for enhancements to MEIS testing, including (a) canceling magnetometer offset effects associated with the Earth's magnetic field after the magnetometer is positioned for measurement, (b) implementing a separate sensing connection to the pipe so as to avoid interference from voltage loss in the pipe feed-line connection, (c) providing a power amplifier to excite the pipe with large-amplitude signals.
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3.发明授权Method and apparatus for simulating electrical characteristics of a coated segment of a pipeline 有权用于模拟的涂覆管电源段的电特性的方法和装置
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4.发明公开Method and apparatus for estimating the condition of a coating on an underground pipeline 审中-公开装置和方法用于评估地下管道的涂层的状况
公开(公告)号：EP2372354A2
公开(公告)日：2011-10-05
申请号：EP11169508.6
申请日：2009-10-30
CPC分类号： G01N17/02
摘要： Methods are provided for reducing interference from stray currents in buried pipelines/metal structures during MEIS testing or other current-sensing applications in the pipeline. Methods are also provided for measuring bulk complex electrical impedance between a buried pipe and the soil, thereby rendering an indication of the quality of the anti-corrosive coating. Methods are also provided for measuring the complex propagation constant of AC voltages propagating along an attenuative pipeline. This information is useful for assessing the general condition of the anti-corrosive coating involved, or to enhance MEIS inspection of the pipeline. Methods are also provided for enhancements to MEIS testing, including (a) canceling magnetometer offset effects associated with the Earth's magnetic field after the magnetometer is positioned for measurement, (b) implementing a separate sensing connection to the pipe so as to avoid interference from voltage loss in the pipe feed-line connection, (c) providing a power amplifier to excite the pipe with large-amplitude signals.
摘要翻译： 提供了用于减少在管道MEIS测试或其他电流检测应用中埋地管道/金属结构从杂散电流干扰的方法。 这样的方法是提供一种用于测量埋设管与土壤之间散装复杂的电气阻抗，从而使防腐蚀涂层的质量的指示。 这样提供了用于测量沿着在衰减性管道传播AC电压的复传播常数的方法。 此信息是用于assesing抗腐蚀涂层参与，或以提高管道的MEIS检查的一般状况是有用的。 这样提供了用于增强MEIS测试，包括方法（a）中删除与该地球磁场相关联的磁力抵消效应的磁力计被定位用于测量后，（b）执行的单独的感测连接到管道，从而避免从电压干扰 损失在管连接馈线，（c）提供的功率放大器，以激发具有大振幅信号的管道。
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