Nondestructive testing device for mending anticorrosion layers of pipelines

The utility model discloses a nondestructive testing device for the bonding quality of mending anticorrosion layers of oil and gas transportation pipelines. The testing device is composed of a basic framework, a travelling mechanism, an adsorption mechanism and a sensor clamping mechanism, wherein the basic framework is a carrier of the travelling mechanism, the adsorption mechanism and the sensor clamping mechanism; the travelling mechanism is a power component for driving the testing device to travel; the sensor clamping mechanism fixes a detection sensor; an adsorption base of the adsorption mechanism for absorbing the testing device to a pipeline mending position is arranged on both sides of a mending anticorrosion layer (9), the rest parts of the adsorption mechanism, the basic framework and the travelling mechanism jointly form a carrier moving around the circumference of the pipeline mending anticorrosion layer (9); and one end of the basic framework is provided with the travelling mechanism, and the sensor clamping mechanism is arranged in the middle and at the two ends of the basic framework. The testing device disclosed by the utility model carries out rapid scanning measurement on the mending bonding quality (especially the bonding force) under the condition of not damaging mending anticorrosion layers, and is high in testing efficiency, strong in adaptive ability, and accurate in defect quantification.