Freezer with adjustable freezing section length and freezing method for freezer

Abstract

The invention discloses a freezer with the adjustable freezing section length and a freezing method for the freezer. The freezer comprises a liquid supplying pipe, a liquid returning pipe, an auxiliary pipe, an inner freezing pipe, an outer freezing pipe and a plurality of annular separation boards, wherein the inner freezing pipe is arranged inside the outer freezing pipe, wherein the top end of the inner freezing pipe and the top end of the outer freezing pipe are simultaneously sealed by an upper sealing plate; the bottom end of the outer freezing pipe is sealed by a lower sealing plate; the bottom of the inner freezing pipe and the bottom of the outer freezing pipe are communicated; the annular separation boards are arranged in a cavity formed by the inner freezing pipe and the outer freezing pipe along the axial direction at intervals; a plurality of one-way valves are uniformly arranged on each annular separation board; the liquid supplying pipe and the liquid returning pipe extend into the inner freezing pipe from the outside; the liquid supplying pipe downwards extends to the bottom of the inner freezing pipe; the auxiliary pipe extends into the cavity formed by the inner freezing pipe and the outer freezing pipe from the outside; a base cone is arranged at the bottom end of the outer freezing pipe. According to the freezer and the freezing method, the effective utilization rate of refrigerating capacity is greatly improved, and the starting power of a refrigerating station is reduced. Compared with a general freezer, the freezer disclosed by the invention is more environment-friendly, economic, energy-saving and efficient.

Description

technical field [0001] The invention relates to an artificial freezer and a freezing method thereof in fields such as mine construction engineering and urban underground engineering, in particular to a freezer with an adjustable freezing section length and a freezing method thereof, and is particularly suitable for adjusting the length of the freezing section during the freezing process. Adjusted ultra-long, ultra-deep frozen sinking project. Background technique [0002] In deep urban underground engineering and mine construction projects, when the freezing construction method is adopted, the freezing pipes will continuously provide cooling capacity to the strata in the section where the permanent lining is completed, which not only wastes a lot of electricity, but also causes frost heave in the soil near the lining. As a result, the completed lining will be damaged by frost heaving, which requires the frozen pipes in the completed section of the permanent lining to be repl...

AI Technical Summary

Problems solved by technology

However, since the position of the thermal insulation device is fixed relative to the freezing pipe, the position of the thermal insulation device of the freezing pipe cannot be adjusted after the freezing project starts, which cannot meet the needs of the freezing pipe for cooling first and then heat insulation in deep underground freezing projects

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