Simulation experiment device for acoustic emission inspection of storage tank

Abstract

The invention relates to a simulation experiment device for acoustic emission inspection of a storage tank. The simulation experiment device comprises a tank body, wherein the tank body consists of a storage tank body, a tank top and a tank bottom which are connected by flanges. The tank top is provided with a manhole sealed by a manhole cover plate clamping mechanism. The tank body is provided with an experimental hole sealed by a test piece clamping mechanism clampedly provided with defective test pieces. The tank body is provided with an acoustic emission sensor to respectively acquire defective acoustic emission signals on the tank bottom and the tank wall. The tank body is also provided with a liquid inlet and a backflow port which are connected with a pressing system. The test piece clamping mechanism is detachable, and the controllable repeated experiment for the acoustic emission inspection of the storage tank can be implemented by replacing defective test pieces. Therefore, the working environment and the acoustic emission signal of the storage tank can be simulated, the observation of various acoustic emission signal characteristics of the storage tank is facilitated, indoor experiment teaching requirements and controllable and repeatable experiment requirements are satisfied, and an experimental platform is provided for the acoustic emission inspection theory and method study of the storage tank.

Description

technical field [0001] The invention relates to the detection technology of oil and gas storage and transportation equipment in the field of oil and gas storage and transportation engineering, in particular to a storage tank acoustic emission detection simulation experiment device. Background technique [0002] As the main equipment for storage of petrochemical raw materials and products, storage tanks are widely used in petroleum and petrochemical enterprises. Storage tanks are affected by various unfavorable factors during their service, and damage is inevitable, especially the tank bottom thinning, corrosion perforation, and crack expansion caused by the synergistic effect of corrosive media in the environment and internal pressure, etc., resulting in leakage of storage media. It may lead to fire, explosion and environmental pollution accidents, causing huge losses to the country and society. [0003] Acoustic emission testing of storage tanks is a non-destructive testin...

AI Technical Summary

Problems solved by technology

On-site detection can obtain the actual acoustic emission characteristic signal of storage tank defects, which is an ideal research method. However, it is often difficult to realize the on-site inspection because it needs to open the tank to compare with the detection results. Therefore, the research on acoustic emission technology is not enough. May rely entirely on on-site testing, indoor experiments will be a very important research method

[0004] In the existing well-known laboratory experiments for acoustic emission testing of storage tanks, especially for crack propagation, the storage tank needs to be suppressed to capture the acoustic emission signal of the defect expansion. For an unchanged storage tank, if the defect is to be observed in the next test Acoustic emission signal, the pressure of the storage tank needs to be higher than the pressure of the previous pressure, and the pressure redundancy of the storage tank is limited, resulting in the frequent replacement of the storage tank used in the indoor experiment

The existence of the above problems has resulted in the high cost and inconvenience of the indoor acoustic emission testing of storage tanks, resulting in the idleness of most acoustic emission equipment in domestic universities and scientific research institutions, and the inability to conduct in-depth research, which has affected the development of domestic storage tank acoustic emission testing technology.

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