US 11,927,368 B1
Prefabricated energy pile, construction method, and heat pump heat exchange system
Kesheng Zhang, Beijing (CN); Wenchao Liu, Beijing (CN); Yufeng Liu, Beijing (CN); Zhiwei Yu, Beijing (CN); and Zhuohua Song, Beijing (CN)
Assigned to CCCC CONSTRUCTION GROUP CO., LTD., Beijing (CN)
Filed by CCCC CONSTRUCTION GROUP CO., LTD., Beijing (CN)
Filed on Jun. 7, 2023, as Appl. No. 18/206,848.
Application 18/206,848 is a continuation of application No. PCT/CN2022/134131, filed on Nov. 24, 2022.
Claims priority of application No. 202211131495.2 (CN), filed on Sep. 16, 2022.
Int. Cl. F24T 10/17 (2018.01); F24F 5/00 (2006.01)
CPC F24T 10/17 (2018.05) [F24F 5/0046 (2013.01); F24F 2005/0057 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A prefabricated energy pile, comprising:
a pile body, which comprises a stainless steel pipe, a metal lining pipe extending within the stainless steel pipe, and a concrete pipe between the metal lining pipe and the stainless steel pipe, wherein a heat conductor is provided between the stainless steel pipe and the metal lining pipe, and the heat conductor is in contact connection with both the stainless steel pipe and the metal lining pipe at the same time; and
a heat exchange pipeline, which comprises a first pipe section and a second pipe section in communication with each other, wherein a heat exchange medium flows through the first pipe section and the second pipe section in turn, tops of both the first pipe section and the second pipe section protrude upward out of the prefabricated energy pile, the second pipe section is in contact connection with the metal lining pipe, the heat conductor comprises a top ring, a base, and a plurality of connecting bolts, an outer circumference wall of the base fixedly abuts against an inner circumference wall at a bottom end of the stainless steel pipe, a positioning hole is provided at an upper surface of the base, the positioning hole is configured to be inserted for fixation by the metal lining pipe, the top ring is fixedly sleeved on an outer circumference wall at a top end of the metal lining pipe, an outer circumference wall of the top ring fixedly abuts against an inner circumference wall of the stainless steel pipe, and the plurality of connecting bolts pass through the stainless steel pipe and are screwed to the metal lining pipe.