Detection device for flux leakage detector trafficability

The utility model provides a device for detecting the passing capacity of a magnetic flux leakage detector. The device comprises a fluid supply unit, a ball serving barrel, a ball receiving barrel anda pipeline, wherein two ends of the pipeline are respectively communicated with the ball serving barrel and the ball receiving barrel, the fluid supply unit is communicated with the ball serving barrel to provide fluid for the ball serving barrel, and a magnetic flux leakage detector enters the pipeline from the ball serving barrel, passes through the pipeline under the assistance of the fluid and enters the ball receiving barrel. Pressure difference is generated between the front and rear ends of the magnetic flux leakage detector by fluid; the magnetic flux leakage detector is driven to move in the pipeline, whether the magnetic flux leakage detector is stuck in the pipeline or not can be effectively detected before the magnetic flux leakage detector is put into actual detection, the passing capacity of the mag