Heat-dissipation cooling medium-voltage hoisting cable for high-rise building and preparation method

Abstract

The invention discloses a heat-dissipation cooling medium-voltage hoisting cable for a high-rise building and a preparation method. The cable comprises a cable core, the cable core is formed by intertwisting three insulated cables, and fan-shaped filling strips are filled in gaps of the cable core, cross section of the fan-shaped filling strips being arc-shaped; a high-strength halogen-free low-smoke polyolefin high-strength tie is bound outside the cable core and is fastened; and each insulated cable comprises an insulated wire core, an oxygen-free soft copper tape metal shielding layer is wound outside the insulated wire core first, then a high-strength halogen-free low-smoke flame-retardant polyolefin sheath is extruded, and a nano radiation heat-dissipation cooling coating layer is coated on the high-strength halogen-free low-smoke flame-retardant polyolefin sheath. The heat-dissipation cooling medium-voltage hoisting cable has a stable and compact structure, high bearing capacity,a capability of being vertically laid on a high-rise building, has the characteristics of no halogen, low smoke, high flame retardancy and quick heat-dissipation cooling, and thus can be widely applied to an electric power transmission system of the high-rise building.

Description

technical field [0001] The invention aims at the improvement of power transmission cables for high-rise buildings, and in particular relates to a hoisting medium-voltage power cable for high-rise buildings with the characteristics of heat dissipation, cooling and environmental protection and a preparation method thereof. Background technique [0002] With the rapid development of my country's social economy, all kinds of high-rise buildings have sprung up like mushrooms after rain. In today's society where land resources are insufficient, high-rise buildings will surely become the mainstream buildings in cities. There are many high-rise buildings in large and medium-sized cities, especially super-high-rise buildings in super-large-scale cities as a modern symbol of urban construction. [0003] However, the volume ratio of high-rise buildings is high, the power consumption is large, and the transmission power is large, which requires large-capacity cables. With the tradition...

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Problems solved by technology

The structure of the cable, firstly, the weight of the cable is heavy; secondly, it is difficult to fix the outer peripheral steel wire, and the construction is difficult; thirdly, the heat dissipation of the cable is difficult, and the ampacity is small, and the ampacity of the armored cable with the same cross section is lower than that of the unarmored cable. 30%, which increases the cost of the cable; fourth, the outer diameter of the armored cable is larger, which increases the amount of cable material and also leads to an increase in the cost of the cable; Constraints, there are horizontal laying, then vertical laying, and then horizontal laying. If steel wire armored hoisting cables are used, transfer cabinets or joints must be installed at the intersection of the horizontal plane and the vertical shaft. In this way, the investment will be increased, and the cable failure rate will be increased. Simultaneously increased cable laying workload

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