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Corrosion monitoring system and method based on two-dimensional flexible area array piezoelectric ultrasound

A piezoelectric ultrasonic and corrosion monitoring technology, applied in the pipeline system, using ultrasonic/sonic/infrasonic waves, using sound waves/ultrasonic/infrasonic waves to analyze solids, etc., can solve the problems of inaccurate pipeline monitoring, high risk and difficulty of manual detection, etc. , to achieve intuitive monitoring results, reduce labor costs, and accurate measurement results

Active Publication Date: 2022-04-01
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: to solve the existing pipeline monitoring technology (1) manual detection is dangerous, difficult, and incomplete; (2) can only monitor the thinning of the pipe wall at some points; (3) monitor the pipeline Problems with inaccuracy over time

Method used

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  • Corrosion monitoring system and method based on two-dimensional flexible area array piezoelectric ultrasound
  • Corrosion monitoring system and method based on two-dimensional flexible area array piezoelectric ultrasound
  • Corrosion monitoring system and method based on two-dimensional flexible area array piezoelectric ultrasound

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Embodiment 1

[0051] A corrosion monitoring system based on two-dimensional flexible area piezoelectric ultrasonic in this specific embodiment, this system is preferably used for pipeline corrosion monitoring, the system includes: piezoelectric ultrasonic sensing unit 1, monitoring terminal 2 and control computing center 3 , the connection method is as figure 1 As shown, the piezoelectric ultrasonic sensing unit 1 is connected to the monitoring terminal 2, and the control computing center 3 is connected to the monitoring terminal 2. A preferred embodiment adopted by the present invention is that the control computing center 3 and the monitoring terminal 2 are connected wirelessly. , 4G network is the most common way of implementation.

[0052] The piezoelectric ultrasonic sensing unit 1 is used to collect pipeline data, and adopts a two-dimensional flexible area piezoelectric ultrasonic sensor 11, which is directly coupled with the surface of the pipeline; image 3 As shown, the two-dimens...

Embodiment 2

[0076] On the basis of Example 1, the pipeline in the actual project may be a curved pipeline 12 or a straight pipeline 4, Figure 6 and Figure 7 The installation of the two-dimensional flexible area piezoelectric ultrasonic sensor 11 of the straight pipe and its preloaded structure is shown, such as Figure 6 As shown, the two-dimensional flexible area array piezoelectric ultrasonic sensor 11 in this embodiment adopts a full-circumferential flexible area array sensor 15, which is installed on the straight pipe 12 at 360 degrees in the circumferential direction. Figure 6 It is a schematic diagram of the details of the preload structure of the adaptive straight-tube flexible airbag, Figure 7 It is a schematic diagram of installation of the self-adaptive straight tube flexible airbag pretensioning structure of the present invention.

Embodiment 3

[0078] The monitoring system and monitoring method of the present invention can not only be used for pipeline monitoring, but also can be used for metal loss monitoring in other working conditions, such as the erosion monitoring of manifolds.

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Abstract

The invention discloses a corrosion monitoring system and method based on two-dimensional flexible area array piezoelectric ultrasound, and relates to the technical field of petroleum and natural gas and ship pipeline corrosion monitoring, and the system comprises a piezoelectric ultrasonic sensing unit, a monitoring terminal and a control calculation center; the piezoelectric ultrasonic sensing unit adopts a two-dimensional flexible area array piezoelectric ultrasonic sensor, the sensor comprises a flexible thin film material and a piezoelectric transduction element, the piezoelectric transduction element is directly embedded in the flexible thin film material, and the thin film material serves as a coupling agent of the piezoelectric transduction element; the piezoelectric ultrasonic sensor is compressed through a self-adaptive flexible air bag pre-tightening structure, an air bag is fixed in a ribbon mode, an inflation hole is formed in one side of the air bag, and after the sensor is fixed, certain gas or liquid is applied into the air bag so as to meet the requirement for applying load to a dry coupling model interface. The flexible array probe is directly coupled with the surface of the pipeline, a pre-tightening structure is adopted, the air bag is tightly attached to the pipeline, signals with the very high signal-to-noise ratio are obtained, and the measurement result is more accurate.

Description

technical field [0001] The invention relates to the technical field of on-line corrosion monitoring of petroleum, natural gas and ship pipelines, in particular to a two-dimensional flexible surface array piezoelectric ultrasonic defect monitoring system and method for pipeline corrosion defects. Background technique [0002] Oil, natural gas, and shale gas wellhead devices include a large number of pipelines connecting equipment and facilities in the station, with large pressure changes, many specifications and styles, complex structures, and the task of transporting high-temperature, high-pressure, flammable, explosive, and toxic media. It plays an important role in the station and is an important transport medium for fluid media. Due to the combined effects of fluid erosion, electrochemical corrosion, stress corrosion and external environment on the pipeline for a long time, the pipeline will gradually have defects such as pipe wall thinning and pits. These defects will c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/06G01N29/04G01B17/02
Inventor 王仕强樊建春张来斌
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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