U-shaped hanging ring corrosion detection device based on potential gradient

The technical problem to be solved by the utility model is to provide the U-shaped hanging ring corrosion detection device based on the potential gradient. The detection device can be used for quickly and effectively detecting the corrosion degree of a U-shaped hanging ring based on the change of the potential gradient and is convenient to carry. The detection device comprises a main control module, a current excitation module, a voltage acquisition module, a man-machine interaction module, a power supply module and a shell, the main control module comprises a controller and a data storage module, the controller is provided with a power supply circuit, a reset circuit, a clock circuit, a communication serial port and a debugging interface, and the shell is provided with a current adjusting knob, a frequency adjusting knob and a power switch. Excitation current is injected through the arranged current excitation module, and voltage values are acquired through the voltage acquisition module for comparison and a