Well-surrounding rotation irrigation and pumping irrigation well group distribution and a well control method

Abstract

The invention discloses a well-surrounding rotation irrigation and pumping irrigation well group distribution and a well control method. The system comprises a water pumping well, a temperature sensor, a water pumping well filter, a water pumping well flow meter, a water pumping well main valve, a water pumping pump, a recharge well main valve, a heat exchanger, a recharge filter, a recharge mainpipe, a recharging water pump, a water distributor, a plurality of groups of electromagnetic valves, a plurality of groups of irrigation well flow meters, a plurality of groups of recharge well, a target water-containing layer and a central controller. According to the well-surrounding rotation irrigation and pumping irrigation well group distribution and a well control method, the recharge well is used for surrounding the water pumping well and rotating the well mode, so that the occurrence of heat penetration and the possibility of water scale of the pumping irrigation well and the rotationirrigation well group devices are reduced to the maximum extent, so that the utilization rate of geothermal energy and the service life of equipment are improved.

Description

technical field [0001] The invention relates to the design of underground water source heat pump system technology, and in particular relates to the distribution of surrounding well wheel irrigation and pumping irrigation well groups and the control method of break wells. Background technique [0002] Groundwater source heat pump is a technology for the continuous development and utilization of shallow geothermal energy. Since shallow geothermal energy is one of the clean and renewable energy sources, this technology has the characteristics of long-term utilization, efficient transmission, cost saving, energy saving and environmental protection. . [0003] During the operation of the groundwater source heat pump system, there are many problems, the most important of which are the problem of thermal penetration of the aquifer and the shortening of the service life of the equipment due to scaling. The groundwater source heat pump pumps groundwater and extracts the geothermal ...

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Problems solved by technology

[0003] During the operation of the groundwater source heat pump system, there are many problems, the most important of which are the problem of heat penetration of the aquifer and the shortening of the service life of the equipment due to scaling.

The groundwater source heat pump pumps groundwater and extracts the geothermal energy in it, and refills the aquifer with an equal amount of normal temperature water. Due to the existence of the temperature difference between pumping and irrigation water, the outlet water temperature will be affected to varying degrees under the action of heat conduction and convection. The phenomenon of "heat penetration" occurs, which seriously affects the utilization efficiency of geothermal energy

[0004] Moreover, the operation of the system will change the original flow state of the aquifer, accompanied by the migration of ions. After long-term operation, ion accumulation will occur at various positions in the aquifer and around the pumping and irrigation well equipment, resulting in fouling of the equipment and increasing maintenance costs. cost and greatly shorten the service life of the equipment

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