Separate lightning protection cable

Abstract

The invention belongs to the technical field of cables, and particularly relates to a separation-type lightning protection cable. The separation-type lightning protection cable comprises electric units, an inner jacket, an armoring layer, an outer jacket and a grounding layer; the inner jacket sleeves outside a first protective layer, a second protective layer is arranged outside the inner jacket, the grounding layer is arranged outside the second protective layer, the armoring layer is arranged outside the grounding layer, and the outer jacket is arranged outside the armoring layer; the first / second protective layer is made of a mica tape; and the separation-type lightning protection cable is characterized in that a position fixing element is arranged in the first protective layer, the position fixing element has a plurality of storage holes which are not communicated with each other, the electric units are distributed in the storage holes, and each storage hole is only provided with one electric unit; each storage hole is provided with an opening which is arranged on the edge of the position fixing element, and the electric unit can stretch into the storage hole or be taken out from the storage hole through the opening; besides the opening position, the edge of the position fixing element is positioned on the same cylindrical surface. The separation-type lightning protection cable has the beneficial effects that simplicity in production is realized, the production speed is high, the resistance rate of the grounding layer is low and the maintenance cost is low; the electric power still can be normally transmitted when the cable is provided with high load or struck by the lightning.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to separate lightning protection cables. Background technique [0002] At home and abroad, the cables used for communication base stations are mainly considered to be flame-retardant, fire-resistant, and flexible. They have not considered that the lightning caused by the cable will damage the communication equipment or damage the cable itself, resulting in power interruption of the communication network and paralyzing the communication network. The power system of the communication base station is generally a low-voltage system. For the lightning protection of the low-voltage system, in addition to the direct lightning strike, the most destructive effect is the secondary effect. The lightning produces electrostatic field, alternating electromagnetic field and electromagnetic radiation, and the lightning electromagnetic pulse LEMP is formed by lightning wave intrusion and ground poten...

AI Technical Summary

Problems solved by technology

However, they still have the following deficiencies: (1) the ground layer adopts the method of oblique wrapping, and the production speed is slow; (2) the armor layer only plays the role of armor, (3) after being struck by lightning, the part of the cable The grounding layer is blown, so that the inner sheath melts in the cable core interval and the insulated wire cores are integrated, making it difficult to separate the insulated wire cores; it can only be disposed of as waste products; the above shortcomings increase the maintenance cost of the cable after lightning strikes

[0008] For this reason, there is also a utility model patent in China named: integrated lightning protection cable, patent number: 201320382810.9. Although it has achieved the purpose of its invention, the applicant believes that there are still the following main defects: the electric unit is located In the inner sheath, when the electric unit is seriously overloaded or the conductor is struck by lightning, the conductor will heat up severely, causing the insulation layer to soften or even drop, and the conductors in adjacent electric units will collide, causing secondary disasters ; Therefore, the applicant has further improved the invention

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