Patent ID: 11946345
Assignee: GUANGZHOU INSTITUTE OF ENERGY CONVERSION, CHINESE ACADEMY OF SCIENCES
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 12:
13. The method according to claim 10, wherein, the upper plug has a flange, and an inner step is formed at the upper end of the well for mating the flange; when the upper plug is sealingly inserted into the upper end of the well, the flange of the upper plug is secured at the inner step, and the upper plug locking cap covers the flange to realize sealing; a first O-ring is sealingly provided between the first end of the temperature sensor tube and the upper plug; a section of the heating circulation tube sticks out from the upper plug, and the section of the heating circulation tube is fixed by a locknut.