OPTIMIZATION OF THE PRESURE NEGATIVE WAVE METHOD UNDER PIPELINES STATE DIAGNOSTICS

Abstract

Background With the development of microelectromechanical systems, small-sized devices for diagnosing the state of pipelines appear, and based on them, wireless networks for monitoring the occurrence of leaks in main pipelines. The main disadvantage of optical methods is their relatively low speed, because for their normal functioning, a certain amount of gas must exit into the outer space. This drawback is a characteristic of almost all direct methods for detecting a gas leak, since the interaction of a probing signal (optical, acoustic or other type) with the gas cloud formed is necessary. In contrast to such direct methods, there are indirect methods in which it is not the in-tube mass itself that is detected, but some indicator of this mass inside the pipeline. In the method of registering a negative pressure wave inside the pipeline, such an indicator is the pressure in the pipe. The article is devoted to optimizing the diagnosis of pipe lines using the negative pressure wave method. Aims and Objectives Development of the optimization task for the pressure negative wave method to determine the place of leakage from the pipeline. Results The solution to the task of determining the place of leakage from the pipeline by the method of unconditional variational optimization showed that in main pipeline sections, where the intersensory interval is higher, the pressure in the pipe should be reduced so that the maximum value of the average detectable distance to the leakage in sections of the pipeline can be reached. The condition is calculated under which the pressure in the corresponding section of the pipeline can have a minimum value.