Nondestructive testing device for pressure vessel of nuclear power unit

The utility model relates to the field of machinery and particularly relates to a nondestructive testing device for a pressure vessel of a nuclear power device. An existing pressure container is long in inspection period, the number of times of water lifting and water entering of equipment is large, and dependence on a ring crane is high. The device comprises a lifting stand column, a lifting guide mechanism, a supporting rack, a rotary motion platform, a barrel connecting pipe connection welding seam tangential inspection tool, a connecting pipe internal composite inspection tool, a connecting pipe inner fillet inspection tool and a pressure container barrel inspection tool, wherein the lifting stand column penetrates through the lifting guide mechanism, and the lifting guide mechanism is connected with the supporting rack; the lifting guide mechanism is arranged in the center above the supporting rack, and the lifting stand column is arranged in the middle of the supporting rack and the lifting guide mechan