Device enabling nitrogen and foaming agents to be injected into foam-repeated-making generator

The utility model discloses a device enabling nitrogen and foaming agents to be injected into a foam-repeated-making generator. The device comprises a main pipeline, a nitrogen and foaming agent pipeline and a foam output pipeline, wherein the nitrogen and foaming agent pipeline and the foam output pipeline are respectively communicated with a bottom end opening and a top end opening of the main pipeline, and the middle portion of the main pipeline is provided with a foam implantation bed enabling the nitrogen and the foaming agents to conduct foaming sufficiently; the main pipeline is formed by the connection of an upper pipe and a lower pipe through a coupling; a clamping platform used for placing the foam implantation bed is arranged on the inner side of an upper end opening of the lower pipe, and the height of the clamping platform is equal to that of the foam implantation bed; swirlers are arranged in the lower pipe and between the foam implantation bed and the nitrogen and foaming agent pipeline; the foam implantation bed is one device provided with multiple permeable holes. According to the device enabling the nitrogen and the foaming agents to be injected into the foam-repeated-making generator, the foaming agents and the nitrogen are more uniformly mixed, and the mixing is completed outside a well mouth, so that the heavy oil steam drive development effect is improved.