输气管线冰堵段位置测量的研究

Detecting Ice Blockage Position of Gas Pipeline

分析了输气管线产生冰堵的原因,简单介绍几种测量冰堵的方法,指出了这些方法存在的缺点,提出了利用气体发出的声波测量冰堵位置的方法。研究表明,病变处发出的信号是随机性的,随机过程各个样本记录都不一样,因此不能用明确的数学关系式来说明,但这些样本都有共同的统计特性,所以采用概率统计来说明。由于采集到的声音数据比较庞大,声音数据处理过程也较复杂。通过声波测量法的数学推导,建立了利用传感器对冰堵段位置检测的实验装置,并详细介绍了其工作原理。实验时考虑管道周围的噪声,研究了滤波法去噪原理。

The reasons of ice blockage in the gas pipeline were analyzed, and some methods to measure the ice blockage were simply introduced. Some drawbacks in these methods were pointed out. A method to detect position of ice blockage using gasemitting sound wave was presented. The research indicates that the sound signals obtained from the ice blockage position are random, and various sample records in the random progress are not same, so mathematics formulae do not express the relationship. However, those samples have the same statistic properties, and can be expressed by probability statistics. As the amount of sound wave data is big, the process of analyzing the data is very complicated. Through the mathematics deduction of sound wave detecting method, an experiment equipment detecting ice blockage position with sensors was designed and its work principle was introduced in details. In the experiment process, the sound around the pipelines was considered, and the principle to remove noise by wave filtering was researched.