Detecting system and method for incompletely-blocked position of pipeline

Abstract

The invention provides a detecting system for an incompletely-blocked position of a pipeline. The detecting system comprises a pressure wave pulse transmitting device, a pressure sensor and a sensor data collecting system connected with the pressure sensor. The pressure wave pulse transmitting device generates pressure wave pulse signals so that the pressure wave pulse signals can be transmitted in the pipeline through media in the pipeline. The pressure sensor senses the pressure wave pulses signals, transmitted by the media in the pipeline, in the pipeline and outputs the pressure wave pulsesignals to the sensor data collecting system. The invention further provides a detecting method for the incompletely-blocked position of the pipeline. Wavelet transform is adopted for analyzing datacollected by the sensor data collecting system, and the incompletely-blocked position of the pipeline is calculated. By means of the detecting system and method for the incompletely-blocked position of the pipeline, the blocked position of a blockage can be effectively detected in the incompletely-blocked initial stage of the pipeline, measures are taken in time, and safety running of the pipelineis ensured.

Description

technical field [0001] The invention relates to the field of pipeline blockage detection, in particular to a detection system and a detection method for an incomplete pipeline blockage position. Background technique [0002] With the rapid development of my country's economic construction, the demand for natural gas is increasing. In order to meet the demand for natural gas in various places, a number of national gas supply pipeline networks have been built. Pipeline transportation is the main way of natural gas transportation. However, with the long-term operation of gas pipelines, pipeline accidents will inevitably occur due to factors such as pipeline corrosion and aging or man-made damage. Especially in long-distance natural gas pipelines, pipeline blockage accidents are prone to occur due to the lack of daily inspection and maintenance in the field for a long time. In addition, due to the deformation of the pipeline, the pig is stuck and blocked during operation, which...

AI Technical Summary

Problems solved by technology

At present, the research on pipeline blockage detection using transient analysis method mainly focuses on liquid pipelines, and there are relatively few studies on gas pipelines, especially long-distance natural gas pipelines.

And in the prior art, there are many detection systems and detection methods for complete blockage of pipelines, and few detection systems and detection methods for incomplete blockage of pipelines.

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