A Method for Detecting Blockages in Pressure Pipelines Using Pulse Pressure Waves

Abstract

A method for pressure pipe blocking status detection using a pulse pressure wave, comprising the following steps: 1, using a solenoid valve to emit a pulse pressure wave at the inlet of a pressure pipe; 2, providing a high-frequency dynamic pressure sensor A at the inlet of the pressure pipe to record a pulse pressure wave signal S1 here, and providing a high-frequency dynamic pressure sensor B at a position at a distance of L from the inlet of the pressure pipe to record a pulse pressure wave signal S2 here; 3, analyzing the S1 and the S2 to obtain the propagation velocity C of the pulse pressure wave and the attenuation coefficient η of the pulse pressure wave; and 4, analyzing the pulse pressure wave signal S2 to obtain a blocking status. In the method, the solenoid valve is rapidly opened and closed to actively emit a pulse pressure wave in the pipe, and effective information in the incident waves and the reflected waves of the wave are analyzed. Therefore, the number and types of blocked segments can be determined accurately; blocking positions, rate and length can be obtained; and the method is simple in operation and high in precision.

Description

technical field [0001] The invention relates to the technical field of pipeline detection, in particular to a method for detecting blockage in a pressure pipeline by using pulse pressure waves. Background technique [0002] With the depletion of global fossil energy and the deepening of human development and utilization of oil and gas resources, human development of oil and gas resources has gradually shifted from land to ocean. Therefore, as the most important way of oil and gas transportation, the mileage of submarine pipelines is also increasing. In the development of offshore oil and gas, the operation status of the submarine pipeline is directly related to the safety of offshore oil and gas fields, and the pipeline may be blocked due to various reasons such as the accumulation of paraffin, asphalt and other solids and the formation of natural gas hydrate solids during operation; [0003] When pipeline clogging occurs, it becomes more and more urgent for oil companies to...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems that existing pipeline clogging detection methods are easily disturbed, or have high cost, or poor detection accuracy, the present invention provides a method for detecting clogging in pressure pipelines using pulse pressure waves

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