US 20030101804 A1

 

　　A method is disclosed for determining the amount of surface discontinuity on the interior surface of a pipeline that could result, for example, from corrosion or from dirt and crud buildup. As dirt and other collateral material collect along an interior pipeline wall, or as the pipeline wall corrodes, the flow profile for the gas flow traveling through the pipeline changes. By measuring the ratio of the flow velocity near the interior of the pipeline to that near the perimeter of the pipeline over time, the relative roughness of the inner pipeline surface can be determined.

 

　　公开了一种用于确定管道内表面不连续数量的方法，例如，起因于腐蚀或污垢和污物堆积。由于灰尘和其他相关材料沿着内部管道壁，或者由于管道壁腐蚀，气体流过管道的流量剖面改变。通过测量靠近管道内壁附近的流量和管道周边的流量随时间的比，管道内表面的相对粗糙度可以被确定。