Fireproof power cable

Abstract

The utility model belongs to the technical field of cables, in particular to a fire-resistant power cable, which comprises a cable core, an inner coating layer and an outer coating layer, a graphene layer which gathers heat and transmits the heat outwards is arranged in the inner coating layer, a heat dissipation pad which dissipates the heat outwards is arranged on the outer layer of the graphene layer, and the outer side of the heat dissipation pad is of a honeycomb structure so as to promote heat emission. The outer side of the cable core is provided with a clamping pad for installing a heat dissipation pad, the clamping pad, the graphene layer and the heat dissipation pad are assembled before extrusion production of the cable core, and the inner side of the outer coating layer forms an inner convex layer during extrusion production to separate the adjacent clamping pads and form reinforcement to prevent deformation of the clamping pads. According to the utility model, when heat is generated in the cable, the heat can be rapidly collected and discharged outwards, so that the long-time use performance of the cable is maintained, the condition that the coating assembly is affected by the heat and is aged is avoided, the service life of the cable is prolonged, and the adaptability of the cable to severe environments is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, in particular to a fire-resistant power cable. Background Art

[0002] Fire-resistant power cable refers to a cable that can maintain safe operation for a certain period of time under flame burning conditions. It is widely used in high-rise buildings, subways, underground streets, large power stations and important industrial and mining enterprises and other places related to fire safety and firefighting and lifesaving, such as power supply lines and control lines for emergency facilities such as fire-fighting equipment and emergency guide lights;

[0003] At present, when the existing fire-resistant power cables are in use, they will generate a lot of heat due to the operating environment. If they cannot be discharged in time, the aging of the coating will be accelerated over time, affecting the fire resistance of the cable.

[0004] In order to solve the above problems, a fire-resistant power cable is proposed in the present application. Utility Model Content

[0005] The purpose of the utility model is to provide a fire-resistant power cable, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a fire-resistant power cable, comprising: a cable core and an inner coating layer and an outer coating layer which are extruded and produced on the outer side thereof and are layered inside and outside; a graphene layer which gathers heat and transfers it outward is arranged inside the inner coating layer, a heat dissipation pad which dissipates heat outward is arranged on the outer layer of the graphene layer, and the outer side of the heat dissipation pad is a honeycomb structure to promote heat discharge; a clamping pad for installing the heat dissipation pad is arranged on the outer side of the cable core, and the clamping pad, the graphene layer and the heat dissipation pad are all assembled before the extrusion production of the cable core.

[0008] Furthermore, during the extrusion production, an inner convex layer is formed on the inner side of the outer coating layer to separate adjacent pads and reinforce them to prevent deformation.

[0009] Furthermore, a heat transfer belt is provided on the inner side of the heat dissipation pad for absorbing the heat collected by the graphene layer and transferring it outwards.

[0010] Furthermore, during the extrusion production, the outer side of the inner coating layer forms a storage groove for storing the clamping pad and the graphene layer, and the inner side of the clamping pad is provided with a positioning groove for clamping the graphene layer.

[0011] Furthermore, a side groove for accommodating the outer extension portion of the graphene layer is provided on the outer side of the clamping pad.

[0012] Furthermore, a top block is provided on the inner side of the upper end of the clamping pad to squeeze the heat dissipation pad to fix it.

[0013] Furthermore, two ends of the heat dissipation pad are squeezed by the top block to form arc grooves, which are used to prevent loosening during assembly.

[0014] The utility model has the following beneficial effects:

[0015] The utility model absorbs the heat inside the inner coating layer through the graphene layer and then transfers it outward, and then absorbs it through the heat transfer belt and discharges it outward through the heat dissipation pad. Compared with the existing cables, the internal heat can be quickly concentrated and discharged outward, which greatly reduces the impact on the coating component, so that it maintains normal internal fire performance, maintains the long-term use effect of the cable and prolongs its service life;

[0016] The utility model stores the clamping pad, the graphene layer and the heat dissipation pad through an external winding mechanism, and sequentially places the graphene layer, the clamping pad and the heat dissipation pad outside to form a superimposed combination before the extrusion production process, so that they are extruded together with the cable core to form an inner coating layer and an outer coating layer. After this arrangement, the cooling component can be conveniently installed inside the coating mechanism, thereby enriching the use function of the cable and improving its adaptability to harsh environments.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cable cross-section structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the partial structure of the cable cross section of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the connection part between the clamping pad and the inner covering layer of the utility model;

[0023] Figure 5 It is a schematic diagram of the assembly structure of the clamping pad, graphene layer and heat dissipation pad of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1. cable core; 2. inner coating layer; 3. outer coating layer; 4. clamping pad; 5. graphene layer; 6. heat dissipation pad; 7. inner convex layer; 8. heat transfer belt; 9. storage groove; 10. positioning groove; 11. side groove; 12. top block; 13. arc groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-5 As shown, the utility model is a fire-resistant power cable, comprising: a cable core 1 and an inner coating layer 2 and an outer coating layer 3 extruded and produced on the outer side thereof in layers;

[0029] The inner coating layer 2 is provided with a graphene layer 5 for collecting and transferring heat outwards, and the outer layer of the graphene layer 5 is provided with a heat dissipation pad 6 for dissipating heat outwards, and the outer side of the heat dissipation pad 6 is a honeycomb structure to promote heat dissipation;

[0030] A clamping pad 4 for installing a heat dissipation pad 6 is arranged on the outer side of the cable core 1. The clamping pad 4, the graphene layer 5 and the heat dissipation pad 6 are all assembled before the extrusion production of the cable core 1.

[0031] The present embodiment provides a real-time heat dissipation component for a fire-resistant cable, which utilizes a graphene layer 5 to collect the heat of the inner coating layer 2 and transfer it outward, and finally dissipates the heat outward through a heat dissipation pad 6 to prevent heat accumulation from affecting the coating mechanism. Secondly, when producing the cable, the graphene layer 5, the clamping pad 4 and the heat dissipation pad 10 are sequentially laid on the outside of the cable core 1, so that during the subsequent extrusion operation, the cable is wrapped inside to form a cable structure, thereby enriching the use function of the fire-resistant cable and increasing its service life.

[0032] Among them, the inner side of the outer coating layer 3 forms an inner convex layer 7 during extrusion production to separate adjacent pads 4 and reinforce them to prevent them from deformation. The relative laying of the pads 4 is used to contain the graphene layer 5 inside to form protection, so as to extend its service life and reduce external negative influences.

[0033] Among them, a heat transfer belt 8 for absorbing the heat collected by the graphene layer 5 and transferring it outward is arranged on the inner side of the heat dissipation pad 6. The two sides of the clamping pad 4 protrude outward so that the heat dissipation pad 6 and the components inside it can be limited inside to prevent looseness.

[0034] The outer side of the inner coating layer 2 forms a receiving groove 9 for storing the clamping pad 4 and the graphene layer 5 during the extrusion production, and the inner side of the clamping pad 4 is provided with a positioning groove 10 for clamping the graphene layer 5 .

[0035] The outer side of the clamping pad 4 is provided with a side groove 11 for accommodating the outer extension portion of the graphene layer 5, and the outer protruding portion of the graphene layer 5 is used to increase the heat collection range and improve the collection efficiency.

[0036] A top block 12 is provided on the inner side of the upper end of the clamp pad 4 to squeeze the heat dissipation pad 6 and fix it.

[0037] The two ends of the heat dissipation pad 6 are squeezed by the top block 12 to form arc grooves 13, which are used to prevent loosening during assembly, so that the structure is stable during the extrusion operation and the subsequent use performance is improved.

[0038] It can be understood that the utility model can quickly collect and discharge heat when it is generated inside the cable, so as to maintain the long-term performance of the cable, avoid aging of the coating component due to heat, and improve the service life of the cable and its adaptability to harsh environments.

[0039] A specific application of the operation process of this embodiment is as follows: when in use, the graphene layer 5, the clamping pad 4 and the heat dissipation pad 6 are first placed outward in sequence through the external winding mechanism to be coated on the outside of the cable core 1. During this process, the positioning groove 10 on the inner side of the clamping pad 4 automatically clamps the graphene layer 5 inside and makes the upper end extension part be stored in the inside of the side groove 11. Therefore, when the heat dissipation pad 6 is laid, the heat transfer tape 8 on the inside can be fitted with the graphene layer 5, and the heat dissipation pad 6 is squeezed by the top block 12 to form an arc groove 13. Finally, the graphene layer 5, the clamping pad 4 and the heat dissipation pad 6 are combined with the cable core 1 for extrusion. After the complete cable is formed, the contact area is increased by the clamping pad 4 and the graphene layer 5 to quickly gather the internal heat of the clamping pad 4 and transfer it outward, and then the heat transfer tape 8 and the heat dissipation pad 6 are used to dissipate the heat outward, forming a cooling and heat dissipation effect on the cable, so as to avoid the negative impact of internal heat accumulation on the coating mechanism, maintain its long-term fire resistance, and improve the service life of the cable.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fire-resistant power cable, characterized in that: include: A cable core (1) and an inner coating layer (2) and an outer coating layer (3) extruded and produced on the outer side thereof in layers; The inner coating layer (2) is provided with a graphene layer (5) for gathering heat and transferring it outwards, and the outer layer of the graphene layer (5) is provided with a heat dissipation pad (6) for dissipating heat outwards, and the outer side of the heat dissipation pad (6) is a honeycomb structure to promote heat dissipation; A clamping pad (4) for mounting a heat dissipation pad (6) is arranged on the outer side of the cable core (1); the clamping pad (4), the graphene layer (5) and the heat dissipation pad (6) are all assembled before the extrusion production of the cable core (1).

2. A fire-resistant power cable according to claim 1, characterized in that: The inner side of the outer coating layer (3) forms an inner convex layer (7) during extrusion production to separate adjacent clamping pads (4) and reinforce them to prevent them from deforming.

3. A fire-resistant power cable according to claim 1, characterized in that: A heat transfer belt (8) is provided on the inner side of the heat dissipation pad (6) for absorbing the heat collected by the graphene layer (5) and transferring it to the outside.

4. A fire-resistant power cable according to claim 1, characterized in that: The outer side of the inner coating layer (2) forms a storage groove (9) for storing the clamping pad (4) and the graphene layer (5) during extrusion production, and the inner side of the clamping pad (4) is provided with a positioning groove (10) for clamping the graphene layer (5).

5. A fire-resistant power cable according to claim 1, characterized in that: The outer side of the clamping pad (4) is provided with a side groove (11) for accommodating the outer extension portion of the graphene layer (5).

6. A fire-resistant power cable according to claim 1, characterized in that: A top block (12) is provided on the inner side of the upper end of the clamping pad (4) for squeezing the heat dissipation pad (6) to fix it.

7. A fire-resistant power cable according to claim 1, characterized in that: The two ends of the heat dissipation pad (6) are squeezed by the top block (12) to form arc-shaped grooves (13) for preventing loosening during assembly.

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