公开(公告)号：US12276440B2

公开(公告)日：2025-04-15

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 ,  F24H1/18 ,  F24H9/00

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.