Pipe well freeze protection device for extremely cold regions with deep frozen soil

Abstract

The invention provides a pipe well freeze protection device for extremely cold regions with deep frozen soil. The pipe well freeze protection device comprises air compressors, a gas pressure tank, a water tank, a gas injection pipe, a shutoff valve, a pipe well, a lifting pipe, a submersible pump and a gas supplementing pipe. The air compressors are connected with an inlet of the gas pressure tankby the gas supplementing pipe, an outlet of the gas pressure tank is communicated with portions adjacent to the tail end of the lifting pipe via the gas injection pipe, and the shutoff valve is arranged at a joint of the lifting pipe and the water tank; a start end of the lifting pipe extends into the pipe well and is connected with the submersible pump. The pipe well freeze protection device hasthe advantages that the gas pressures of pipelines can be maintained by the gas pressure tank of the pipe well freeze protection device which is a gas injection freeze protection device, systems aresimple and stable and are low in energy consumption, and the reliability of the freeze protection systems can be improved; the pipe well freeze protection device is wide in application range, and thelifting pipe can be prevented from freezing no matter how the external temperatures change.

Description

technical field [0001] The invention relates to a tube well water intake system in a deep frozen soil and extremely cold area, in particular to a tube well antifreeze device in a deep frozen soil and extremely cold area. Background technique [0002] In high-altitude deep permafrost and extremely cold regions, the depth of permafrost reaches 40-150m, the depth of tube wells for water intake is about 100-200m, and the static water level is about 10-20m. For tube wells whose static water level is higher than that of the permafrost, when the well pump is in intermittent operation mode, after the well pump is stopped, the water in the pumping pipe cannot be drained, resulting in the well above the permafrost line in the pumping pipe The water was frozen so that the well pump could not start pumping water properly again. The static water level of the groundwater in the tube well in different areas is about a few meters to tens of meters below the ground. When the static water le...

AI Technical Summary

Problems solved by technology

For tube wells whose static water level is higher than that of the permafrost, when the well pump is in intermittent operation mode, after the well pump is stopped, the water in the pumping pipe cannot be drained, resulting in the wells above the permafrost line in the pumping pipe The water is frozen and the well pump cannot start pumping properly again

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