Patent ID: 11927368
Assignee: CCCC CONSTRUCTION GROUP CO., LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 6:
7. The prefabricated energy pile according to claim 4, wherein a bottom end of the second pipe section is fastened with a connecting sleeve in communication with the second pipe section, and an annular communicating slot is provided at a lower surface of the connecting sleeve around a spiral axis of the second pipe section;
a communicating cavity in communication with the first pipe section is provided in the base, an annular inserting recess is provided at a position corresponding to the connecting sleeve on the base around the communicating cavity, the communicating cavity is in communication with the annular inserting recess, the connecting sleeve is inserted in the annular inserting recess to communicate the second pipe section with the communicating cavity.