Non-intrusive corrosion on-line detection equipment for fluorine chemical device

Abstract

The invention provides non-intrusive corrosion online detection equipment for a fluorine chemical engineering device. The equipment comprises an ultrasonic detection module, a temperature compensation module, an ultrasonic data analysis module, an ultrasonic thickness gauge, a detection equipment host and a display, and is characterized in that the detection equipment host is connected with the ultrasonic thickness gauge and the ultrasonic data analysis module respectively; the ultrasonic data analysis module is connected with the ultrasonic detection module and the temperature compensation module, the ultrasonic detection module comprises an ultrasonic transmitter, an ultrasonic receiver and corresponding waveguide rods, and the temperature compensation module is fixed on the waveguide rods. According to the ultrasonic high-temperature thickness measuring method based on the waveguide technology, the waveguide rod structure is optimized, non-intrusive corrosion online detection applied to the high-risk environment of a fluorine chemical engineering device can be achieved, the online detection function under the normal-temperature and high-temperature working conditions is achieved, the precision is higher, and meanwhile long-period monitoring can be achieved for key parts.

Description

technical field [0001] The invention relates to a detection device, in particular to a non-invasive on-line corrosion detection device for a fluorine chemical plant. Background technique [0002] The fluorine chemical industry is a sub-industry of the chemical industry. Due to the variety of products, excellent performance and wide application fields, this industry has become an important industry with rapid development. For a long time to come, the fluorine chemical industry will also be one of the fastest growing industries in the chemical industry. The fluorine chemical industry can be divided into two major industries: inorganic fluorine chemical industry and organic fluorine chemical industry. The inorganic fluorine chemical industry is an important part of the chemical industry, and its products are important raw materials and auxiliary materials for machinery, electronics, metallurgy and other industries. Among inorganic fluorides, fluoride salt products such as alu...

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Problems solved by technology

[0003] With the processing of fluorine products, the corrosion of fluorine chemical equipment is becoming more and more serious, and these corrosions will cause great safety hazards in production

For corrosion monitoring, the existing methods have certain limitations. For example, the working temperature of the resistance probe method cannot be higher than 240°C. Although the temperature of the inductance probe method can reach 430°C, the measurement accuracy and sensitivity are also very good. But it needs to open holes in the pipeline for installation, and it is relatively troublesome to disassemble and install the probe

High-temperature artificial fixed-point ultrasonic thickness measurement has certain flexibility and accuracy, but it also has certain shortcomings. First, it requires people to enter the device for detection, and human safety needs to be considered; second, the continuous temperature resistance of the thickness measurement probe Poor, can not contact high-temperature pipes for a long time, and the high-temperature couplant will evaporate, so the measurement must be completed as soon as possible, which will bring inconvenience to manual measurement operations in high-temperature areas

Furthermore, due to differences in the operation of the instrument by different surveyors, the continuity of the thickness measurement data at the same point is poor, which cannot well reflect the change trend of the pitting corrosion

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