A small bending radius impact-resistant lightweight optical fiber power cable and its process flow

Abstract

The invention discloses a small bending radius impact-resistant light optical fiber power cable and its process flow, including a power transmission unit, a possible optical unit, a wrapping tape, interlocking armor and an outer sheath, and the wrapping tape is equipped with A number of power transmission units, possibly optical units, are sequentially sheathed with interlocking armor and an outer sheath around the wrapping tape. The optical fiber cable of the present invention has changed the problem of poor bending and heavy weight of the existing steel belt and steel wire armored cables; the special interlocking armor has an excellent protective effect on the cable, and the present invention (optical fiber ) The cable can be laid safely without affecting the safety of personnel and equipment; the minimum bending radius of the cable is only 7 times the outer diameter, which is especially suitable for laying in a narrow environment; at the same time, the optical unit can be introduced into the cable as required For information transmission and equipment monitoring, the use of cables is expanded, the safety of cable use is increased, and construction costs are reduced.

Description

technical field [0001] The invention specifically relates to a small bending radius impact-resistant light optical fiber power cable and its technological process, in particular to a short-distance horizontal or vertical exposed laying power transmission cable for civil buildings, the rated voltage level is AC 0.6 / 1kV, and can be used in When signal transmission is required, an optical unit is added to the cable to form a photoelectric composite cable structure. At the same time, through the selection of specially designed insulation and outer sheath materials, it can be used in humid, direct sunlight and high salinity situations. Background technique [0002] Existing power cable conductors usually use copper conductors and aluminum conductors. Copper conductors have excellent mechanical properties and electrical connection safety performance, but due to their high density, the cables are heavy, making it difficult to transport and install, and the price is also high ; The...

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Problems solved by technology

[0002] Existing power cable conductors usually use copper conductors and aluminum conductors. Copper conductors have excellent mechanical properties and electrical connection safety performance, but due to their high density, the cables are heavy, making it difficult to transport and install, and the price is also high ; The aluminum conductor is light in weight and low in price, but due to its poor creep resistance, it is easy to cause loose joints during frequent power-on and power-off processes, which may cause sparks or even fires

[0003] In the occasions that need to resist external impact and require mechanical protection, the current common practice is to use steel strip or steel wire wrapping armor structure, but since steel strip wrapping armor and steel wire wrapping armor are both "hard structures" , it is easy to squeeze the insulation when the cable is bent: especially the sharp edge of the steel strip will cause cutting damage to the insulation, resulting in electrical safety hazards such as sparking at the tip and short circuit; therefore, it is necessary to add an inner lining between the insulation and the armor. The insulation is protected, and the bending radius of the cable is strictly limited (≥12 times the outer diameter of the cable) to avoid damage to the insulation; but such a structure brings two new problems: the introduction of the inner lining increases the outer diameter and weight of the cable ;The space required for installation increases due to the large bending radius, which increases the difficulty of installation

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