A system for heating the soil around an underground cryogenic storage tank

Abstract

The invention discloses a system for heating the soil around an underground low-temperature storage tank, belonging to the technical field of soil heating, including a buried pipe for heating the soil around the underground low-temperature storage tank, exchanging the water circulating in the buried pipe and the external environment The ground source heat pump air conditioner for the heat in between and the connecting main pipe connecting the buried pipe and the ground source heat pump air conditioner; the buried pipe is arranged around and at the bottom of the underground low-temperature storage tank, and the buried pipe and the connecting main pipe form a closed circulation system. When the system is running, the circulating water enters the buried pipe through the connecting main pipe and performs heat conversion with the soil around the underground low-temperature storage tank. The temperature of the soil rises and the water temperature decreases; the low-temperature water passes through the connecting main pipe to the ground source heat pump air conditioner. , heat exchange with the environment around the ground source heat pump air conditioner, the temperature of the water rises, and the temperature of the environment decreases. , and help the ground source heat pump air conditioning refrigeration.

Description

technical field [0001] The invention relates to the technical field of soil heating, in particular to a system for heating soil around an underground low-temperature storage tank. Background technique [0002] With the acceleration of the urbanization process and the continuous growth of the population, the amount of energy required for urban construction and development is also increasing, and the demand for energy storage equipment is also increasing. Due to the shortage of urban land resources, underground cryogenic storage tanks are playing an increasingly important role in the field of energy storage. [0003] The working environment of underground cryogenic storage tanks for liquefied natural gas and other energy sources is often a harsh environment of low temperature and high pressure. For example, to store liquefied natural gas, it must be stored in an environment of more than minus 160 degrees Celsius. Because the medium around the underground cryogenic storage tan...

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Problems solved by technology

[0005] In view of the above existing problems, the present invention provides a system for heating the soil around the underground low-temperature storage tank to overcome the problems of low energy conversion rate and uneven heating of the soil caused by heating with electric heating rods in the prior art. The heat pump air conditioner, buried pipe and connecting main pipe are used in the system of heating the soil around the underground low temperature storage tank. The circulating water heated by the ground source heat pump air conditioner is used as the heat source to heat the rock and soil around the underground low temperature storage tank through the buried pipe. , at the same time, the buried pipe converts the circulating water and the rock and soil around the underground low-temperature storage tank into energy conversion, which is used for ground source heat pump air conditioning and cooling, so as to achieve high energy utilization rate, high heating effect, and soil heating The purpose of uniformity, while ensuring the heating effect, saves energy

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