Energy-saving type sealing structure for socket and spigot type prefabricated directly-buried thermal insulation pipe

The invention relates to the field of geothermal resource application, in particular to an energy-saving sealing structure for a socket-and-spigot prefabricated directly-buried thermal insulation pipe, which comprises a first pipeline and a second pipeline, a connecting ring is arranged at the end part of the first pipeline; a first annular groove and a second annular groove are formed in the connecting ring; a sealing ring is mounted in the first annular groove; a butt joint ring matched with the second annular groove is arranged at the end of the second pipeline. When the butt joint ring is matched with the second annular groove in an inserted mode, the butt joint ring is matched with the sealing ring in an abutting mode. The second pipeline is provided with a pressing assembly used for pressing the butt joint ring on the first annular groove. Rapid and stable pipeline connection is achieved. The unique pressing design ensures that the butt joint ring is firmly locked in the second annular groove, so that t