A vacuum and pressure composite groundwater source heat pump recharge device

Abstract

The invention relates to a vacuum and pressure compound type underground water source heat pump recharge device, which includes a hydraulic telescopic outer pipe, an inner pipe, and a heat exchange device; the upper end of the inner pipe extends upwards and extends above the hydraulically telescopic outer pipe; The lower end extends downwards and extends to the bottom of the hydraulic telescopic outer tube. The upper part of the inner tube slides up and down with the fixed sleeve provided in the upper part of the hydraulic telescopic outer tube; The upper end of the inner pipe is connected with the inlet of the heat exchange device through the hot water source pipeline, and the height of the entire suction pipe and water injection pipe is automatically adjusted according to the depth of different hot water wells to ensure that any The heat source in the deep hot water well can be effectively collected, and can be recharged directly after the heat exchange is completed, which improves the recharge efficiency and provides convenience for the collection and recharge of ground source heat.

Description

technical field [0001] The invention relates to the technical field of geothermal energy collection, in particular to a vacuum and pressure composite ground water source heat pump recharge device. Background technique [0002] Water source heat pumps use water as a heat source, clean, energy-saving, and can provide low-temperature heat sources, which are very suitable for heating in industrial and mining enterprises and agricultural production; however, most areas in northern my country have no surface water, and can only use groundwater. Water resources are scarce, so groundwater is used as a water source , The water discharged by the water source heat pump cannot be simply discharged, but must be recycled. [0003] At present, water source heat pumps use groundwater as a water source, and tube wells are usually used for extraction and recharge. There are three engineering methods for groundwater recharge through tube wells: vacuum recharge, gravity recharge, and pressure re...

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Problems solved by technology

[0004] Among these three methods, gravity recharge is also natural recharge. Although simple, it has high requirements on geological structure and low recharge efficiency; pressure recharge is suitable for aquifers with high water table and low permeability; vacuum recharge Mainly used in aquifers with low water table and good permeability;

[0005] When these three methods are in use, it is necessary to detect the specific conditions of the hot water well before choosing a plan, which brings great inconvenience to the recharge.

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