一种用于分段冻结的液氮冻结器

• Format: Patent
• Language: Chinese
• Published: 02.07.2024
• Subjects: EARTH DRILLING; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; GALLERIES; HYDRAULIC ENGINEERING; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; SOIL SHIFTING; TUNNELS; UNDERGROUND OR UNDERWATER STRUCTURES

本发明公开了一种用于分段冻结的液氮冻结器，涉及冻结器技术领域，包括冻结管、该冻结管安装有液氮输送管，该液氮输送管包括进液管和出液管，所述冻结管内部设置有至少一层隔热板从而将所述冻结管内部分割成若干个冷冻腔室，所述进液管和出液管均伸入到各所述冷冻腔室中，各所述冷冻腔室均安装有启闭控制组件，所述液氮输送管通过相应所述启闭控制组件连通或隔断对应的所述冷冻腔室。操作者可根据需要操控相应的启闭控制组件，分段控制冷冻效果，降低了能量损耗，提高了降温冻结的准确性，同时避免部分区域冻结温度过低影响开挖施工，从而缩短施工周期。 The invention discloses a liquid nitrogen freezer used for step freezing, and relates to the technical field of freezers. The liquid nitrogen freezer comprises a freezing tube, wherein a liquid nitrogen conveying tube is mounted in the freezing tube; the liquid nitrogen conveying tube comprises a liquid inlet tube and a liquid outlet tube; at least one layer of thermal insulation plates is arranged inside the freezing tube for dividing the inner part of the freezing tube into a plurality of freezing chambers; both the liquid inlet tube and the liquid outlet tube extend into each freezing chamber; each freezing chamber is equipped with a start-stop control assembly; and the liquid nitrogen conveying tube communicates with the corresponding freezing chamber