Method for detecting blockage condition inside pressure pipeline by using pulse pressure wave

Abstract

The invention discloses a method for detecting the blockage condition inside a pressure pipeline by using a pulse pressure wave, and belongs to the technical field of pipeline detection. The method includes the following steps that 1, the pulse pressure wave is emitted at an inlet of the pressure pipeline by a solenoid valve; 2, a high-frequency dynamic pressure sensor A is arranged at the inlet of the pressure pipeline, a pulse pressure wave signal S1 at the inlet is recorded, a high-frequency dynamic pressure sensor B is arranged in the position in the distance L away from the inlet of the pressure pipeline, and a pulse pressure wave signal S2 in the position is recorded; 3, the S1 and the S2 are analyzed, a pulse pressure wave propagation speed C and a pulse pressure wave attenuation coefficient eta are obtained; 4, the S2 is analyzed, and the blockage condition is obtained. With the method, the solenoid valve is opened and closed quickly to emit the pulse pressure wave actively inthe pipeline, and effective information in the incident wave and the reflected wave of the pulse pressure wave is analyzed, so that the number and the types of blockage sections can be judged accurately, the blockage positions, the blockage rate and the blockage length can be obtained, and the method is easy and convenient to operate 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

Images