公开(公告)号：US20230358442A1

公开(公告)日：2023-11-09

申请号：US18354871

申请日：2023-07-19

Applicant: Qingdao University of Technology

Inventor： Sen LIANG ,  Ruijun SUN ,  Qinglun CHE ,  Long WU

IPC: F24H9/14 ,  F24H9/00 ,  F24H1/18

CPC classification number: F24H9/14 ,  F24H9/0005 ,  F24H1/181

Abstract: A tooling and method for flexible through connection of a double-liner water heater. The tooling includes a transition shaft, a tooling connecting plate and a fastening screw. The method includes: allowing a shaft head of the transition shaft to be in fit with an inner surface of an outer flange of a lower liner for welding; allowing an end hole to be in fit with an outer surface of an inner flange of an upper liner for welding; after welding seams are cooled, removing the tooling, and enameling the upper and liners; forming through-flexible connection between the inner and outer flanges; and firmly fitting the upper and lower liners together with two steel strips to ensure that a gap between the upper and lower liners is not greater than 7 mm.