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Refrigerating device

A refrigeration device and refrigeration unit technology, which is applied in the direction of superconducting/high-conducting conductors, electrical components, superconducting devices, etc., can solve the problems affecting the reliability of power grid power supply, and does not consider the evaporation of liquid nitrogen into nitrogen, etc.

Active Publication Date: 2021-03-23
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing refrigeration devices are generally composed of refrigerators, liquid nitrogen pipelines and liquid nitrogen pumps. One is that the problem of evaporation of liquid nitrogen into nitrogen gas during the heat exchange process of circulating liquid nitrogen is not considered. The other is that when the refrigerator fails, the superconducting The cable must be cut off, which will affect the power supply reliability of the power grid. In order to ensure the safe, reliable and stable operation of the superconducting cable, it is necessary to improve the existing refrigeration device

Method used

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Embodiment Construction

[0035]Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0036] In addition, in order to better illustrate the present invention, numerous specific details are given in the following specific examples. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, means well known to those skilled in the art are not described in detail in order to highlight the gist of the present invention.

[0037] Such as figure 1 As shown, an embodiment of the present invention proposes a refrigeration device, which is applied to the cooling of superconduct...

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Abstract

The invention provides a refrigerating device which is applied to cooling of a superconducting cable and comprises a refrigerating main module. The refrigerating main module comprises a refrigerationunit, a nitrogen re-liquefier, a supercooled liquid nitrogen Dewar and a circulating liquid nitrogen heat exchanger, the problem of liquid nitrogen heat exchange evaporation in the liquid nitrogen circulating heat exchange process is considered, the nitrogen re-liquefier is designed, evaporated nitrogen is condensed and liquefied, the condensed and liquefied liquid nitrogen returns to the supercooled liquid nitrogen Dewar again to be recycled, so that the refrigeration effect of the refrigerating device is improved, the temperature uniformity of the cable can be ensured, and the power supply reliability of grid-connected operation of the superconducting cable system is improved.

Description

technical field [0001] The invention relates to the technical field of superconducting cables, in particular to a refrigeration device for superconducting cables. Background technique [0002] In recent years, urban citizens have generally lowered their tolerance to electromagnetic effects and visual pollution caused by overhead lines, and it has become an inevitable trend for power supply and distribution lines to enter the ground. In order to meet the power demand of high power supply reliability, high power quality, and high load density, the construction cost of projects such as increasing circuit capacity and ring network entry into the ground using traditional technologies is extremely expensive, and it is even difficult to implement. This is a prominent contradiction faced by the power grid . High-temperature superconducting cables have many advantages such as low line loss, large transmission capacity, small corridor footprint, and environmental friendliness, provid...

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Application Information

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IPC IPC(8): H01B12/16
CPCH01B12/16Y02E40/60
Inventor 吴小辰胡子珩余建国章彬汪桢子王琦汪伟王哲
Owner SHENZHEN POWER SUPPLY BUREAU