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.

 

　　公開了一種用于確定管道內(nèi)表面不連續(xù)數(shù)量的方法，例如，起因于腐蝕或污垢和污物堆積。由于灰塵和其他相關(guān)材料沿著內(nèi)部管道壁，或者由于管道壁腐蝕，氣體流過管道的流量剖面改變。通過測量靠近管道內(nèi)壁附近的流量和管道周邊的流量隨時間的比，管道內(nèi)表面的相對粗糙度可以被確定。