CN-224217282-U - Low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities

Abstract

The utility model belongs to the technical field of public facility cables, in particular to a low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities, which comprises a cable, a guide core and a filling part of an inner ring of the cable and a coating layer of an outer ring of the cable; the heat dissipation group is characterized in that a plurality of heat insulation plates are arranged along the axis of the cable, a fan-shaped area separation guide core is formed between the adjacent heat insulation plates, a heat collecting ring is fixedly connected to the adjacent ends of the adjacent heat insulation plates to connect the plurality of heat insulation plates into a whole, heat transfer strips for axial heat conduction are arranged in the heat insulation plates in a penetrating mode, a plurality of heat conduction rods are arranged in the heat insulation plates at equal intervals, the inner ends of the heat conduction rods are connected to the heat transfer strips, and the outer ends of the heat conduction rods are connected to the coating layer. The utility model can gather heat in the cable and form a fixed heat dissipation channel, so that the heat is transmitted outwards in a fixed path and is transmitted to different sections of the cable, thereby forming a dynamic multi-section heat dissipation effect.

Inventors

• XIAO BENGUO
• HE LIQUN
• HUANG XIAOBAO
• GAO WENGEN
• HOU SHI
• MA XINGXING
• ZHANG QISHAN

Assignees

• 安徽国电电缆股份有限公司

Dates

Publication Date

20260508

Application Date

20250421

Claims (6)

1. 1. A low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities is characterized by comprising a cable (1), a guide core (110) and a filling part (120) of an inner ring of the cable and a coating layer (130) of an outer ring of the cable; the heat dissipation group (2) is provided with a plurality of heat insulation boards (220) along the axis of the cable (1), a sector area separation guide core (110) is formed between the adjacent heat insulation boards (220), and the adjacent ends of the adjacent heat insulation boards (220) are fixedly connected with heat collecting rings (210) to connect the plurality of heat insulation boards (220) into a whole; The inside of the heat insulation plate (220) is penetrated with a heat transfer strip (240) for axial heat conduction; A plurality of heat conducting rods (250) are arranged in the heat insulating plate (220) at equal intervals, the inner ends of the heat conducting rods are connected with the heat transfer strips (240), and the outer ends of the heat insulating plates are connected with the coating layer (130).
2. 2. The low smoke zero halogen flame retardant medium and high voltage fire resistant cable for urban public facilities according to claim 1, wherein the heat insulating board (220) is provided with heat dissipating strips (230) on the outer side, and the inner side is fixedly connected to the outer end of the heat conducting rod (250).
3. 3. The low-smoke halogen-free flame-retardant medium-high voltage fire resistant cable for urban public facilities according to claim 2, wherein a limiting cavity (131) is formed at the inner side of the coating layer (130) corresponding to the radiating strip (230), and an inwardly protruding heat absorbing part (132) is arranged in the limiting cavity.
4. 4. The low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities according to claim 3, wherein the arc-shaped heat absorbing part (132) is provided with clamping blocks (133), and clamping grooves are formed between adjacent clamping blocks (133).
5. 5. The low-smoke halogen-free flame-retardant medium-high voltage fire resistant cable for urban public facilities according to claim 4, wherein the outer side of the heat dissipation strip (230) is provided with convex lugs (231) which form dislocation distribution with the clamping blocks (133).
6. 6. The low-smoke halogen-free flame-retardant medium-high voltage fire resistant cable for urban public facilities according to claim 5, wherein the convex blocks (231) are clamped in the groove bodies between the adjacent clamping blocks (133), and the opposite side surfaces are mutually attached.

Description

Low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities Technical Field The utility model belongs to the technical field of public facility cables, and particularly relates to a low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities. Background The low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities is a special cable specially designed for scenes with high safety requirements, has multiple protection characteristics of low smoke and no halogen, flame retardance, fire resistance and the like, is designed through composite performance, is environment-friendly and safe, and is a preferable component for modern urban infrastructure construction. At present, the cable is used in urban public facilities, a large amount of heat can be generated in long-time operation, and if the cable is not discharged in time, the damage of an internal structure can be caused. In order to solve the problems, the application provides a low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities. Disclosure of utility model The utility model aims to provide a low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities, which solves the problems in the background technology. In order to solve the technical problems, the utility model is realized by the following technical scheme: The utility model relates to a low-smoke halogen-free flame-retardant medium-high voltage fire-resistant cable for urban public facilities, which comprises a cable, a guide core, a filling part and a coating layer, wherein the guide core and the filling part are arranged on the inner ring of the cable; The heat radiation group is provided with a plurality of heat insulation boards along the axis of the cable, a fan-shaped area separation guide core is formed between the adjacent heat insulation boards, and the adjacent ends of the adjacent heat insulation boards are fixedly connected with heat collecting rings to connect the plurality of heat insulation boards into a whole; the heat-conducting strip for axial heat conduction is penetrated in the heat-insulating plate; the inside equidistant many heat conduction poles that are equipped with of heat insulating board, the inner is connected in the heat transfer strip, and the outer end is connected to the coating. Further, the heat radiation strip is arranged on the outer side of the heat insulation plate, and the inner side surface of the heat radiation strip is fixedly connected to the outer end of the heat conduction rod. Further, a limiting cavity is formed at the inner side of the coating layer corresponding to the radiating strip, and an inwardly protruding heat absorbing part is arranged in the limiting cavity. Further, the arc of the heat absorbing part is provided with clamping blocks, and a clamping groove is formed between every two adjacent clamping blocks. Further, protruding bumps are arranged on the outer sides of the radiating strips and form dislocation distribution with the clamping blocks. Further, the lug is clamped in the groove body between the adjacent clamping blocks, and the opposite side surfaces are mutually attached. The utility model has the following beneficial effects: The heat collecting ring is used for collecting and absorbing heat and the heat conducting rod is used for directionally discharging, so that a large amount of heat is prevented from being collected in the area where the heat conducting core is located, a heat discharging notch is formed, the heat is promoted to be collected to the heat conducting strip at the position where the heat conducting core is punched and finally discharged outwards, and a directional heat dissipation channel is formed, so that the heat is prevented from being collected in the heat conducting rod for a long time to cause damage. According to the utility model, the built-in heat transfer strips are connected with the parallel heat conducting rods, so that heat in the cable is axially transferred, the heat conducting rods in each area uniformly dissipate heat, and the heat can be automatically gathered to an external low-temperature area for discharging, so that the heat is prevented from being concentrated in a fixed area, and the heat dissipation efficiency is improved. Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtaine