Low-smoke halogen-free flame-retardant middle-high voltage fire-resistant cable for urban public facilities
By incorporating a combination of heat insulation plates, heat transfer strips, and heat-conducting rods into the cable, the problem of ineffective heat dissipation in the cable is solved, achieving directional and uniform heat dissipation and preventing damage to the internal structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI GUODIAN CABLE CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-08
AI Technical Summary
In the prior art, when cables are running in urban facilities, heat accumulates inside, and the heat cannot be effectively dissipated. This ineffective heat dissipation leads to damage to the internal structure of the cable.
By incorporating a combination of heat insulation plates, heat transfer strips, and heat-conducting rods into the cable, a directional heat dissipation channel is formed. Heat is absorbed by the heat-collecting ring and axially transferred to the outside through the heat-conducting rods and heat transfer strips. The design of the heat dissipation strips and heat absorption parts increases the heat dissipation area and efficiency.
It effectively prevents heat from accumulating inside the cable, improves heat dissipation efficiency, prevents damage to the internal structure, and achieves uniform heat dissipation and directional heat release of the cable.
Smart Images
Figure CN224217282U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of public facility cable technology, and in particular relates to a low-smoke halogen-free flame-retardant medium and high voltage fire-resistant cable for urban public facilities. Background Technology
[0002] Low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cables for urban public facilities are special cables designed for high-safety-requirement scenarios. They have multiple protective characteristics such as low smoke and halogen-free, flame retardant, and fire-resistant. Through composite performance design, these cables take into account both environmental protection and safety, making them a preferred component for modern urban infrastructure construction.
[0003] Currently, cables are used in urban public facilities. During long-term operation, a large amount of heat will be generated inside. If it is not dissipated in time, it will cause damage to the internal structure.
[0004] To address the aforementioned issues, this application proposes a low-smoke, halogen-free, flame-retardant, medium- and high-voltage fire-resistant cable for urban public facilities. Utility Model Content
[0005] The purpose of this utility model is to provide a low-smoke, halogen-free, flame-retardant, medium- and high-voltage fire-resistant cable for urban public facilities, which solves the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0007] This utility model is a low-smoke halogen-free flame-retardant medium and high voltage fire-resistant cable for urban public facilities, including the cable, its inner core and filling part, and the outer sheath layer.
[0008] Heat dissipation assembly: Multiple heat insulation plates are provided along the cable axis. Adjacent heat insulation plates form a fan-shaped area to separate the conductor core. Heat-gathering rings are fixedly connected to the adjacent ends of adjacent heat insulation plates, connecting multiple heat insulation plates into one unit.
[0009] The heat insulation board is equipped with axially guided heat transfer strips inside;
[0010] The heat insulation board has multiple heat-conducting rods spaced at equal intervals inside, with the inner end connected to the heat transfer strip and the outer end connected to the covering layer.
[0011] Furthermore, the outer side of the heat insulation plate is provided with heat dissipation strips, and its inner side is fixedly connected to the outer end of the heat-conducting rod.
[0012] Furthermore, a limiting cavity is formed on the inner side of the covering layer corresponding to the heat dissipation strip, and an inwardly protruding heat-absorbing part is provided inside the cavity.
[0013] Furthermore, the heat-absorbing part is provided with an arc-shaped clamping block, and a clamping groove is formed between adjacent clamping blocks.
[0014] Furthermore, the outer side of the heat dissipation strip is provided with protruding bumps, which are staggered with the clamping block.
[0015] Furthermore, the protrusion engages with the groove between adjacent clamping blocks, with their opposite sides fitting together.
[0016] This utility model has the following beneficial effects:
[0017] This invention uses a heat-absorbing ring to concentrate heat absorption and a heat-conducting rod to directionally discharge heat, which can prevent heat from accumulating in the area where the core is located. This creates a heat discharge gap, causing heat to accumulate at the core and eventually be discharged outwards through the heat transfer strip, thus forming a directional heat dissipation channel to avoid heat accumulating inside for a long time and causing damage.
[0018] This invention connects parallel heat-conducting rods with built-in heat transfer strips, enabling axial heat transfer within the cable. This allows for uniform heat dissipation from the heat-conducting rods in each area and also allows heat to automatically accumulate in cooler external areas for release, avoiding concentration in fixed areas and thus improving heat dissipation efficiency.
[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the cable cross-section structure of this utility model;
[0023] Figure 3 This is a partially enlarged structural diagram of part A of this utility model;
[0024] The attached diagram lists the components represented by each number as follows:
[0025] In the picture:
[0026] 1. Cables; 2. Heat dissipation unit;
[0027] 110. Guide core; 120. Filler section; 130. Covering layer; 131. Limiting cavity; 132. Heat absorption section; 133. Clamping block;
[0028] 210. Heat-concentrating ring; 220. Heat insulation plate; 230. Heat dissipation strip; 231. Protrusion; 240. Heat transfer strip; 250. Heat-conducting rod. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] Please see Figure 1-3 As shown, this utility model is a low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cable for urban public facilities, including a cable 1, a conductor core 110 and a filling part 120 of its inner ring, and a covering layer 130 of its outer ring.
[0032] Heat dissipation group 2: Multiple heat insulation plates 220 are provided along the axis of cable 1. Adjacent heat insulation plates 220 form a fan-shaped area to separate the conductor core 110, thereby separating the heat generated by the conductor core 110 in different areas, preventing mutual transfer, and promoting the transfer to the central area. Heat-gathering rings 210 are fixedly connected to the adjacent ends of adjacent heat insulation plates 220, connecting multiple heat insulation plates 220 into one unit to absorb the heat generated by the conductor core 110.
[0033] The heat insulation plate 220 is provided with an axially heat-conducting heat transfer strip 240. If there is too much heat on the outside of one section of the cable 1, causing the internal heat to be unable to be effectively dissipated, the heat transfer strip 240 is raised to transfer the heat axially to different sections of the cable 1, thereby dissipating heat in the lower temperature area.
[0034] Multiple heat-conducting rods 250 are evenly spaced inside the heat insulation plate 220. The inner end is connected to the heat transfer strip 240, and the outer end is connected to the covering layer 130, forming a directional heat dissipation channel to prevent heat from escaping and affecting the heat dissipation rate.
[0035] Preferably, the heat insulation plate 220 is provided with a heat dissipation strip 230 on the outer side, and its inner side is fixedly connected to the outer end of the heat conduction rod 250 to form a heat exchange in the outer ring area of the cable 1, thereby causing the heat inside the heat conduction rod 250 to be discharged outward, forming a heat outlet.
[0036] Preferably, a limiting cavity 131 is formed on the inner side of the covering layer 130 corresponding to the heat dissipation strip 230, and an inwardly protruding heat absorption part 132 is provided inside it.
[0037] Preferably, the heat absorption part 132 is provided with an arc-shaped clamping block 133, and a clamping groove is formed between adjacent clamping blocks 133. The outer side of the heat dissipation strip 230 is provided with a protruding protrusion 231, which is staggered with the clamping block 133. The protrusion 231 is engaged with the groove between adjacent clamping blocks 133, and the opposite sides are in contact with each other, thereby increasing the range of heat dissipation surface and thus increasing the amount of heat dissipation.
[0038] It is understood that this utility model can concentrate heat inside the cable 1 and form a fixed heat dissipation channel, so that the heat is transferred outward in a fixed path, and at the same time, the heat is transferred to different sections of the cable 1, forming a dynamic multi-area heat dissipation effect.
[0039] A specific application of the operation process in this embodiment is as follows: During operation, the heat generated inside the cable 1 is separated into various areas by the heat insulation plate 220, and then absorbed by the heat-collecting ring 210 to the central area of the cable 1, while being transferred outward by the heat-conducting rod 250; when too much heat is concentrated in the external area of the cable 1, affecting the heat dissipation rate, the heat transfer strip 240 inside the heat-collecting ring 210 axially transfers the heat to different sections of the cable 1, so that the heat-conducting rod 250 in that area transfers the heat outward, achieving the effect of multi-point linkage heat dissipation; furthermore, when the heat is transferred outward, the mutual interlocking between the clamping block 133 and the protrusion 231 is used to increase the contact area and improve the heat dissipation efficiency, and finally the heat is discharged to the outside of the cable 1.
[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A low-smoke, halogen-free, flame-retardant, medium- and high-voltage fire-resistant cable for urban public facilities, characterized in that: Includes a cable (1) and its inner core (110) and filling portion (120) as well as an outer sheath (130); Heat dissipation group (2): Multiple heat insulation plates (220) are provided along the axis of cable (1). A fan-shaped area separation guide core (110) is formed between adjacent heat insulation plates (220). A heat-gathering ring (210) is fixedly connected to the adjacent end of the adjacent heat insulation plates (220) to connect multiple heat insulation plates (220) into one unit. The heat insulation plate (220) is provided with axially heat-conducting heat transfer strips (240) inside; The heat insulation plate (220) has multiple heat-conducting rods (250) spaced evenly inside, with the inner end connected to the heat transfer strip (240) and the outer end connected to the covering layer (130).
2. The low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cable for urban public facilities according to claim 1, characterized in that: The heat insulation plate (220) is provided with heat dissipation strips (230) on the outside, and its inner side is fixedly connected to the outer end of the heat conduction rod (250).
3. The low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cable for urban public facilities according to claim 2, characterized in that: The inner side of the covering layer (130) forms a limiting cavity (131) corresponding to the heat dissipation strip (230), and a heat absorption part (132) protruding inward is provided inside it.
4. The low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cable for urban public facilities according to claim 3, characterized in that: The heat-absorbing part (132) is provided with a clamping block (133) in an arc shape, and a clamping groove is formed between adjacent clamping blocks (133).
5. The low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cable for urban public facilities according to claim 4, characterized in that: The heat dissipation strip (230) has protruding protrusions (231) on its outer side, which are staggered with the clamping block (133).
6. The low-smoke halogen-free flame-retardant medium- and high-voltage fire-resistant cable for urban public facilities according to claim 5, characterized in that: The protrusion (231) is engaged in the groove between adjacent clamping blocks (133), and the opposite sides fit together.