Water-repelling and heat-dissipating type underground communication pipeline

Abstract

The invention discloses a water-repelling and heat-dissipating type underground communication pipeline, and belongs to the field of communication pipelines, the water-repelling and heat-dissipating type underground communication pipeline comprises an inner protection pipe, and an outer pipe is arranged on the outer side of the inner protection pipe. According to the invention, heat generated by the cable and steam generated by heat exchange can be directly transferred into remote peripheral soil by extending the heat dissipation sleeve, so that on one hand, the heat dissipation effect is realized, the heat dissipation of the cable is accelerated, and on the other hand, by adopting a mode of directly conducting the heat to the far soil, the moisture of the far soil can be gradually migrated to the direction close to the cable after being heated, so that more moisture is gathered near the cable, and the sufficient moisture content of the near soil is ensured, soil around the cable can maintain good heat conduction performance, the situation of cable overheating faults is further reduced, and steam can be cooled into water again after entering the soil and migrates along with the soil, so that the cable can be conveniently cooled again.

Description

technical field [0001] The invention relates to the field of communication pipelines, in particular to a water-displacing and heat-dissipating underground communication pipeline. Background technique [0002] Communication cable lines are usually laid by underground pipelines in cities. Compared with direct buried and overhead cables, laying cables through pipelines is more complicated and requires higher construction technology, but it is beneficial to reduce external damage and corrosion to communication cables. Therefore, the quality of the communication pipeline is related to the normal use of the communication cable. [0003] Because the cable runs through a certain load current, the cable will heat up during operation. With the increase of the load current, the temperature of the cable surface will be higher. Although the communication pipeline resists the damage of the external environment for the cable, But at the same time, it is not conducive to the heat dissipati...

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Problems solved by technology

[0003] Because the cable runs through a certain load current, the cable will heat up during operation. With the increase of the load current, the temperature of the cable surface will be higher. Although the communication pipeline resists the damage of the external environment for the cable, But at the same time, it is not conducive to the heat dissipation of the cable, and, in areas with relatively high soil thermal resistance coefficient, when the cable generates heat during operation and the soil temperature is higher than 50°C, the moisture in the soil will diffuse to the low temperature, that is, the phenomenon of moisture migration occurs. As a result, the thermal resistivity of the soil will further increase, and even cause the cable to overheat and cause failure.

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