Storage tank bottom plate corrosion damage experiment testing device

Abstract

The invention discloses a storage tank bottom plate corrosion damage experiment testing device, and relates to the technical field of storage tank corrosion monitoring and detection. The storage tankbottom plate corrosion damage experiment testing device comprises a simulation storage tank, a first simulation corrosion source test piece, a second simulation corrosion source test piece, a third simulation corrosion source test piece, an active-passive sound fusion detection system, an electrochemical workstation and an electrochemical control system, and a sonic sensor is arranged on the tankbottom edge plate of the simulation storage tank and is in electric control connection with the active-passive sound fusion detection system; the bottom plate of the simulation storage tank is coveredwith an anti-corrosion coating except for a reserved metal luster circular area. One simulation corrosion source test piece is tightly coupled in each metallic luster circular area; the first simulation corrosion source test piece and the third corrosion source test piece are respectively provided with electrodes and are connected with the electrochemical workstation. According to the device, corrosion sources in different states are placed in the storage tank to simulate the complex corrosion defect state of thea bottom plate of the storage tank, and active and passive sound signals under different conditions are collected for processing and analysis by controlling the state of the simulation corrosion sources.

Description

technical field [0001] The invention relates to the technical field of storage tank corrosion monitoring and detection, in particular to a storage tank bottom plate corrosion damage experimental testing device. Background technique [0002] Ultrasonic guided wave and acoustic emission in the prior art are technologies that can realize on-line inspection of storage tank bottom plate without opening the tank and not stopping production. The ultrasonic guided wave system can only detect the position of the existing corrosion defect on the tank bottom, but cannot obtain the size of the defect, while the acoustic emission system can only detect the corrosion activity of the tank bottom, that is, the activity of the corrosion site. Defects that have been formed do not necessarily corrode, and the part that is being corroded does not necessarily have a small remaining thickness. When the ultrasonic guided wave and acoustic emission system is used for on-line detection of the botto...

AI Technical Summary

Problems solved by technology

Incomplete evaluation results may occur when using ultrasonic guided wave and acoustic emission system for online detection of storage tank bottom plate

In addition, because the ultrasonic guided wave technology needs to run the sensor along the edge plate of the tank bottom for a point-by-point detection, the ultrasonic guided wave technology has limitations such as low monitoring efficiency and small detection coverage due to sound wave attenuation

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