Simulator for verifying nondestructive testing process of service pipeline

The invention relates to a service pipeline nondestructive testing process verification simulator, which belongs to the technical field of pipeline detection, and comprises a bottom plate, two vertical plates are fixed on the upper surface wall of the bottom plate, and the two vertical plates are symmetrically arranged; the two vertical plates are jointly provided with a plurality of inserting grooves, the inserting grooves are formed in the X direction, and the symmetry axis of the two vertical plates is parallel to the X direction. The plug board A and the plug board B are the same in shape and can be respectively inserted into one of the slots; the plugboard A and the plugboard B have various wall thicknesses and materials; a cavity defined by the inserting plate A, the inserting plate B, the two vertical plates and the bottom plate is Z; a medium filling bag is arranged in the cavity Z. The medium filling bag can be inflated to expand and is attached to the inner wall of the cavity Z. The inserting plate