Middle-deep layer geothermal high-low temperature fluid stable evaporation adjusting system and control method

Abstract

The invention belongs to the technical field of middle-deep layer geothermal heat extraction application, and discloses a middle-deep layer geothermal high-low temperature fluid stable evaporation adjusting system and control method. The middle-deep layer geothermal high-low temperature fluid stable evaporation adjusting system is provided with a variable-frequency flow control module, an evaporation temperature control module, a heat supply module, and a water balancing system; the variable-frequency flow control module is used for controlling a pump body and a throttling control valve in the system and adjusting variable-frequency flow in the system; the evaporation temperature control module is used for adjusting the temperature in an evaporator through a temperature difference digital throttling control valve and an evaporation circulating pump; the heat supply module is used for discharging sucked dry low-temperature hot saturated steam into a condenser through a screw compressor motor and a screw compressor to release heat to provide warm air for a user; and the water balancing system is used for keeping the normal operation of a middle-deep layer buried heat exchange pipe. In the operation process of the system, the temperature can be increased, the flow can be reduced, temperature difference can be increased, and energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the technical field of mid-deep geothermal heat extraction application technology, and in particular relates to a mid-deep geothermal high-low temperature fluid stable evaporation regulation system and a control method. Background technique [0002] At present, the heat source of the existing heat pump is of low grade, large flow rate, and small temperature difference. For example, the water source heat pump unit must ensure sufficient flow or water volume to prevent the evaporator outlet from freezing, and the energy consumption of the heat source pump is large, which is uneconomical. At present, the medium-deep geothermal variable flow high and low flow stable heat extraction device makes the high-temperature fluid on the geothermal heat source side sufficiently stable to meet the heat pump's requirements for precise and efficient adjustment of the heat source temperature and flow when the heat pump unit is heating, and perfec...

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Problems solved by technology

[0003] Through the above analysis, the existing problems and defects of the prior art are: the prior art has low temperature, large flow rate, large temperature difference and large energy consumption

[0004] The difficulty in solving the above problems and defects is: the instantaneous flow, cumulative flow, and temperature values ​​all need to be processed and converted by the frequency conversion flow control module. The acquisition and conversion time is long, and the data is updated once every 60 seconds. The on-site flow data and temperature data cannot be read in real time. It is very troublesome to adjust the flow

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