High-cold-resistance special-shaped armored medium-voltage cable and preparation method thereof
A cold-resistant and special-shaped technology, which is applied in the direction of cable/conductor manufacturing, insulated cables, and power cables with shielding layers/conductive layers, etc., can solve problems such as cracking of cold-resistant cables and affecting the normal use of cables, so as to reduce the embrittlement temperature and improve Application range and stability, and the effect of reducing the risk of cracking
Pending Publication Date: 2022-07-15
FAR EAST CABLE +2
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Problems solved by technology
Therefore, the cold-resistant cable will inevitably crack when it runs at a lower temperature, especially at the corner of the line, which affects the normal use of the cable
Method used
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Embodiment 1
[0039] like figure 1 The shown high cold-resistant special-shaped armored medium-voltage cable includes a cable core, a strapping layer 1, an isolation sleeve 2, a special-shaped armor layer 3 and a high cold-resistant outer sheath 4, which are sequentially arranged from the inside to the outside. By setting the high cold-resistant outer sheath 4, the cold-resistant performance of the power cable is greatly improved. The special-shaped armor layer 3 is armored by a plurality of closely arranged arc-shaped flat metal wires 3-1 surrounding the isolation sleeve 2, which makes the surface of the armored cable more round and smooth, and avoids the high cold resistance on the outside. The outer sheath 4 is damaged, reducing the risk of cracking of the high-cold-resistant outer sheath at low temperatures. At the same time, compared with the traditional circular wire armor layer, the flat structure makes the outer diameter of the cable smaller, reducing the difficulty and cost of cabl...
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The invention discloses a high-cold-resistance special-shaped armored medium-voltage cable and a preparation method thereof, the cable comprises a cable core, a bandage layer, an isolation sleeve, a special-shaped armored layer and a high-cold-resistance outer protective layer which are sequentially arranged from inside to outside, the cable core comprises a plurality of wire cores formed by twisting, and fillers are arranged between the wire cores and between the wire cores and the bandage layer; the special-shaped armoring layer is formed by armoring a plurality of arc-shaped flat metal wires which are arranged closely and surround the isolation sleeve. According to the preparation method disclosed by the invention, the arc-shaped flat metal wires are subjected to pre-forming treatment and then armored, and the high-cold-resistant outer protection layer and segmented water cooling process treatment are adopted, so that the prepared high-cold-resistant armored medium-voltage cable can safely and stably operate at the temperature of minus 60 DEG C, thereby effectively coping with the influence of laying in an ultralow-temperature environment on the cable, avoiding the cable cracking and prolonging the service life of the cable. And the line safety is improved.
Description
technical field [0001] The invention relates to the technical field of cables, in particular to a high-cold-resistant special-shaped armored medium-voltage cable and a preparation method thereof. Background technique [0002] Conventional power cables are generally laid in direct burial, pipe or bridge methods. In various complex meteorological environments, the biggest factor affecting the use of power cables is temperature. Due to my country's vast territory and diverse climate, in the alpine regions of the west and the severe cold regions of the north, not only the temperature is low in winter, but also the time is long. Therefore, all parties are trying hard to improve the cold resistance of cables. [0003] Existing cold-resistant power cables generally use polyethylene or cold-resistant polyvinyl chloride sheaths. Because polyvinyl chloride sheaths have good mechanical properties, chemical stability, and flame retardant properties, as well as easy processing and low pr...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01B7/22H01B7/28H01B9/02H01B13/22
CPCH01B7/22H01B7/28H01B9/02H01B13/22Y02A30/14
Inventor 张志力田崇军徐静李林森刘倩倩谢金
Owner FAR EAST CABLE