Natural gas pipeline safety monitoring device based on acoustical science active spurring

Abstract

The invention relates to a natural gas pipeline safety monitoring device based on acoustical science active spurring and belongs to the technical field of pipeline monitoring. The process includes that a sound source is placed at an inlet of the head end of a pipeline to transmit sound waves into the pipeline, and when the sound waves spreading in the axial direction of the pipeline meet hydrates or the pipeline leaks, reflecting signals can be generated; a microphone is arranged near the inlet of the pipeline to collect reflected wave signals; the microphone outputs the reflected wave signals into a signal conditioning module, a multifunctional data acquisition card is used for conducting analog-digital conversion, and finally the signals enter a computer to be analyzed. Positioning of the hydrates and leakage of the pipeline can be conducted by calculating the time difference of the sound wave transmitting signals and the reflected signals, and therefore real-time monitoring on the natural gas pipeline is achieved. The natural gas pipeline safety monitoring device has the main advantages that the method is simple and easy to use, the positioning precision is high, the occupied resources of a system are few, and operation is reliable.

Description

technical field [0001] The invention relates to a natural gas pipeline safety monitoring device based on acoustic active excitation, which belongs to the technical field of pipeline monitoring. Background technique [0002] In order to meet the requirements of the low-carbon development of the national economy and social industry, the natural gas industry has developed rapidly, and the construction, operation, maintenance and guarantee of natural gas pipelines have gradually become the top priority in the field of energy construction. In the process of natural gas exploitation, processing and gathering and transportation, when certain low temperature and high pressure conditions are met, natural gas hydrates will form and condense in natural gas pipelines, which will interfere with normal production at least, resulting in a decrease in the transportation capacity of natural gas pipelines, or block the wellbore at worst , pipelines, valves and other equipment cause production...

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Problems solved by technology

However, there are certain defects in this method. It is easy to form a water hammer effect, which can cause considerable damage to the pipeline and its supporting links (Water hammer induced by fast-acting valves: Experimental studies at pilot plant pipework. Multiphase Science and Technology, 2008, 20(3-4), pp239-263. A. Dudlik, H.M. Prasser, A. Apostolidis, and A. Bergant)

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