Local freezing and thawing switching device

• Main Authors: WANG SHUWEN, HUANG XU, LIU WEI, PAN PENGFEI, FU XIAOKANG, ZHU LINYUAN, XI SHOUZHONG
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2023
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The utility model discloses a local freezing and thawing switching device which comprises a freezing pipe, a middle partition plate is arranged in the freezing pipe, a plurality of holes are evenly formed in the middle partition plate, plugging devices covering the holes are installed on the middle partition plate, and a liquid supply pipe, a first liquid return pipe and a second liquid return pipe are arranged in the freezing pipe. The liquid supply pipe and the first liquid return pipe penetrate through the middle partition plate; through local freezing, the reinforcement range is accurately controlled, economy and reasonability are achieved, damage to the structure caused by unnecessary freezing reinforcement areas is reduced, and later freezing pipe pulling is facilitated through whole-section thawing. 本实用新型公开了一种局部冻结、化冻切换装置，包括冻结管，所述冻结管的内部设有中部隔板，所述中部隔板上均匀的设有多个孔洞并安装有覆盖孔洞的封堵装置，所述冻结管的内部设有供液管、第一回液管和第二回液管，所述供液管和第一回液管贯穿中部隔板；通过局部冻结，精准控制加固范围，经济合理，并减少非必要冻结加固区对结构产生的危害，并通过全段化冻方便后期冻结管拔除。