Vacuum and pressure composite underground water source heat pump recharge device

Abstract

The invention relates to a vacuum and pressure composite underground water source heat pump recharge device. The device comprises a hydraulic telescopic outer pipe, an inner pipe and a heat exchange device, wherein the upper end of the inner pipe extends upwards and extends to the position above the hydraulic telescopic outer pipe, the lower end of the inner pipe extends downwards and extends to the position below the hydraulic telescopic outer pipe, and the upper part of the inner pipe is connected with a fixing sleeve arranged in the upper part of the hydraulic telescopic outer pipe in an up-down sliding manner; an upper air bag packing assembly and a lower air bag packing assembly are fixedly arranged at the upper end and the lower end of the outside of the hydraulic telescopic outer pipe separately; and the upper end of the inner pipe communicates with an inlet of the heat exchange device through a hot water source pipeline. The heights of the whole water suction pipe and the water injection pipe are automatically adjusted according to the depths of different hot water wells, the heat source in one hot well at any depth can be effectively collected, and recharge can be directly carried out after heat exchange is completed, so that the recharge efficiency is improved, and convenience is provided for 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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