Ring main unit used in region high in day-night temperature difference variation

Abstract

The invention relates to a ring main unit used in a region high in day-night temperature difference variation. The ring main unit comprises a cabinet body, a heat exchange plate arranged at the upper end of the cabinet, and a plurality of hollow attachment blocks capable of being attached to the upper surface of the heat exchange plate respectively. Each attachment block is filled with a solid-liquid phase change material; one end of one vertical rod is fixed to the middle of the upper end of the cabinet body, and the other end of the vertical rod penetrates through the heat exchange plate; the attachment blocks can rotate up and down with the vertical rod as a center respectively, and the adjacent attachment blocks are not overlapped mutually. According to the ring main unit used in the region high in day-night temperature difference variation, the characteristic that the day-night temperature difference variation of the region is high is utilized, the diurnal heat is absorbed, and the heat is released at night, so that the problem that the variation of the day-night temperature in the ring main unit is high is alleviated without the need of too many energy sources, the use cost is low, the structure is simple, and the ring main unit runs stably.

Description

technical field [0001] The invention relates to a ring network cabinet used in areas with large temperature differences between day and night, and belongs to the field of electrical equipment. Background technique [0002] The ring network cabinet is a group of high-voltage switchgear installed in the steel plate metal cabinet or made into an assembled spaced ring network power supply unit. Its core part uses load switches and fuses. It has simple structure, small size, low price, and Improve power supply parameters and performance and power supply security and other advantages. [0003] The so-called "ring network cabinet" is to set up a switch cabinet (outgoing switch cabinet) for each power distribution branch, and the bus bar of this switch cabinet is also a part of the ring main line. That is to say, the ring trunk line is formed by connecting the busbars of each outgoing cabinet. Each outlet cabinet is called "ring network cabinet". [0004] Some ring network cabine...

AI Technical Summary

Problems solved by technology

[0004] Some ring network cabinets need to be arranged in places with special occasions, such as areas with a large temperature difference between day and night. At this time, the outside temperature during the day is extremely high, while the outside temperature at night is extremely low. Such a large temperature difference is not conducive to Normal operation and service life of electrical components

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