Foam insulated pipe plugging device and plugging method

The invention discloses a foam insulated pipe plugging device and plugging method. The plugging device structurally comprises an adjustor and a plugging device, wherein the adjustor is mainly a supporting plate which is sleeved on the outer wall of an inner pipe of an insulated pipe and leans against the end portion of an opening of an outer pipe, and two side faces of the supporting plate are respectively provided with an outer pipe adjusting bolt and an inner pipe adjusting bolt which are respectively used for pressing and adjusting in a welding mode. The plugging device mainly comprises the supporting plate, a pressing plate, a pressing bolt and a seal rubber pipe, wherein the plugging device is tightly sleeved between the inner pipe and the outer pipe. The foam insulated pipe plugging device plays a seal function on polyurethane foam materials, meanwhile can adjust concentricity of the inner pipe and the outer pipe, and is good in plugging effect, convenient to assemble and disassemble, capable of greatly