Extra-heavy high-voltage special-shape power cable protection pipe

Abstract

The invention provides an extra-heavy high-voltage special-shape power cable protection pipe and belongs to the technical field of power cable protection pipes. The outermost layer of a pipe body is an external octagonal pipeline wall; an internal octagonal pipeline wall and a middle-layer round pipeline wall are arranged on the same central shaft of the external octagonal pipeline wall; the internal octagonal pipeline wall is parallel to eight edges of the external octagonal pipeline wall; isolating supporting ribs are arranged between corresponding corners of the internal octagonal pipeline wall and the external octagonal pipeline wall; the middle-layer round pipeline wall is tangent and matched with the external octagonal pipeline wall; a heat insulating gap is formed between the middle-layer round pipeline wall and the external octagonal pipeline wall. A design structure that the three layers of pipe walls are matched with the isolating supporting ribs forms a network type three-dimensional supporting structure and compression strength and an anti-bending property can be remarkably improved; nine independent cable laying spaces are arranged so that the difficulty of simultaneously laying a plurality of cables can be obviously reduced and the construction efficiency is improved; and the heat insulating gap on the outer sides of the cable laying spaces can effectively prevent the inner cables from being affected by an external temperature and the ageing of rubber of a cable insulting layer is delayed.

Description

technical field [0001] The invention belongs to the technical field of power cable protection tubes, and in particular relates to an extra-strong high-voltage special-shaped power cable protection tube. Background technique [0002] The cable hole of the traditional communication cable pipe is a large through hole, and multiple cables need to be threaded at the same time. Due to the weight of the cable, the cable threading construction is more difficult and the work efficiency is low. In order to solve the construction problems caused by simultaneous cable threading Difficult, there are also some porous cable tubes on the market, which basically adopt a square and grid structure. In the case of multi-strand cable penetration, the separated independent space can be used for cable splitting operation, which reduces the difficulty of cable penetration construction. , but the square outline of the cable tube itself has disadvantages such as complex production process and unsatis...

AI Technical Summary

Problems solved by technology

[0002] The cable hole of the traditional communication cable pipe is a large through hole, and multiple cables need to be threaded at the same time. Due to the weight of the cable, the cable threading construction is more difficult and the work efficiency is low. In order to solve the construction problems caused by simultaneous cable threading Difficult, there are also some porous cable tubes on the market, which basically adopt a square and grid structure. In the case of multi-strand cable penetration, the separated independent space can be used for cable splitting operation, which reduces the difficulty of cable penetration construction. , but the square outline of the cable tube itself has disadvantages such as complex production process and unsatisfactory compressive strength, which brings troubles to construction and subsequent maintenance, such as difficulty in moving and operating the protective tube during construction, and easy to cause tube rupture during use; In addition, the outer walls of the cable tubes used in the prior art all adopt a solid structure, and the influence on the external environment temperature is only the heat insulation of the tube wall itself, which cannot effectively protect the internal cables in high and low temperature areas, so that the cables of the internal cables are almost Completely withstand the influence of high and low temperatures from the outside world, which will easily cause the insulation and protection layer of the cable to age

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