Non-excavation repair connecting structure for old prestressed concrete cylinder pipe

The utility model relates to the technical field of pipeline non-excavation repair, in particular to an old prestressed concrete cylinder pipe non-excavation repair connecting structure which comprises an old section PCCP, a non-repair section PCCP and a connector assembly, and an HDPE pipe is arranged in the old section PCCP in a sleeved mode. The connector assembly comprises an HDPE flange, a steel sleeve and a sealing ring. The HDPE flange is fixedly connected to the end part of the HDPE pipe; the steel sleeve comprises a small-diameter section and a large-diameter section, a steel flange is arranged at one end of the small-diameter section, and the other end of the small-diameter section is fixedly connected with the large-diameter section through an annular end plate; the non-repair section PCCP is sleeved with the large-diameter section, and the end of the non-repair section PCCP abuts against the annular end plate; the sealing ring is arranged between the large-diameter section and the non-repairing se