关键词: 管道, 泄漏, 定位, 微分, 相关

Abstract: Pipeline transportation plays a more and more important part in world's economy.But pipelines have been subjected to co rrosion and wear,and some have been operated beyond design limits.Pipeline leaks happen frequently.Locating leak point is a very important technique.Quick and accurate locating leak point could gain time for avoiding accident and reduce the loss of material.In this paper,development of a system to monitor the crude oil pipeline is introduced.Two methods of locating leak point are proposed:1.Instantaneous negative pressure wave locating method based on a fast differential algorithm;2.Polar correlation leak point locating.Experiments in Shengli Oil-field showed the accuracy and practical value of the methods.

Key words: pipeline, leak, locating, differential algorithm, correlation