Ultrasonic in-situ automatic detection system for creep cracks on inner wall of hydrogen production furnace tube

Abstract

The invention discloses an ultrasonic in-situ automatic detection system for creep cracks on the inner wall of a hydrogen production furnace tube. The system comprises a computer, a multi-channel ultrasonic system control circuit, a motor driving plate, a hollow cup motor, a rotating motor, a tube climbing machine and a multi-channel piezoelectric transducer detection ring. The multi-channel piezoelectric transducers are arranged in the circumferential direction of the furnace tube and used for detecting cracks on the inner wall of the furnace tube; and the computer sends a detection instruction to the multi-channel ultrasonic system control circuit through Wi-Fi, the multi-channel ultrasonic system control circuit controls multiple paths to simultaneously excite the piezoelectric transducers, receives echo signals from the piezoelectric transducers and then transmits the echo signals to the computer in a wireless mode, and the motor drive board drives the hollow cup motor to drive the pipe climbing machine to move, receives motion parameters sent back by the motor encoder and sends the motion parameters back to the computer through the system control circuit. The in-situ detection problem of the creep cracks on the inner wall of the hydrogen production furnace tube is solved, and wireless and remote ultrasonic automatic detection of the creep cracks on the inner wall of the furnace tube is realized.

Description

technical field [0001] The invention relates to an in-situ detection system, in particular to an ultrasonic in-situ automatic detection system for creep cracks on the inner wall of a hydrogen production furnace tube, belonging to the field of non-destructive detection. Background technique [0002] As a clean and renewable energy, hydrogen energy has attracted more and more attention. With the large-scale application of hydrogen production furnaces in petrochemical and oil refining enterprises, the operation status of hydrogen production furnace tubes and their parts is directly related to the safety and interests of national enterprises. In the hydrogen production furnace, multiple pipes are arranged side by side to work in the whole furnace. The furnace pipe is the main pressure-bearing component. Due to the long-term high temperature and high pressure environment and hydrogen oxide corrosion, cracks are inevitable. Therefore, the safety detection of this kind of structur...

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Problems solved by technology

It also does not involve the multi-channel ultrasonic transducer transmission detection method. The device still needs to manually change the detection position and control it during the detection process.

[0006] Therefore, there is a lack of an in-situ automatic detection system for hydrogen production furnace tubes in the prior art, which does not need to adjust system parameters during the detection process, and can solve the problem of too many cables affecting the detection distance in the traditional method, and according to the actual test environment , to facilitate the implementation of remote detection

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