Novel cable with flame-retardant structure

Abstract

The utility model discloses a novel cable with a flame-retardant structure, and belongs to the field of cables. The cable sequentially comprises a protective layer, a flame-retardant layer, an insulating layer and a central column from outside to inside, the outer wall of the central column is connected with a plurality of partition plates with a heat dissipation function, the partition plates penetrate through the insulating layer and the flame-retardant layer to be in contact with the protective layer, a filling layer is formed between every two partition plates, and a cable body is connected into the filling layer. The filling layer is filled with a filling material, and the filling material is located on the outer side of the periphery of the cable. The problems that in the cable using process, heat is generated, when the heat does not reach a certain temperature, a hollow ring cannot be broken, the heat generated in the cable using process can react with pure water in the hollow ring, the pure water is evaporated, and the flame retardant effect is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a new type of cable with a flame retardant structure. Background Art

[0002] Cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires. Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc. They are all composed of single or multiple wires and insulation layers, and are used to connect circuits, electrical appliances, etc.

[0003] For example, the Chinese patent with application number 202320572064.3, the utility model discloses a new type of cable with a flame retardant structure, belonging to the field of cable technology, including a core and a protective bracket, the number of the cores is four, and they are located in the protective bracket, the middle part of the protective bracket is fixedly connected with a reinforcement layer, the reinforcement layer is located between the four cores, and the protective bracket is externally connected with a flame retardant structural layer. This new type of cable with a flame retardant structure can increase the temperature of the pure water filling layer when the cable is affected by high temperature, but it cannot melt the hollow ring. When the hollow ring is damaged, the internal pure water will overflow, which serves the purpose of extinguishing the fire source. With the setting of the partition board, the internal pure water will not be completely discharged after the hollow ring is damaged, and the pure water does not flow out of the undamaged part of the hollow ring, so that it can achieve the purpose of multi-level flame retardant protection. After the hollow ring is heated, the insulating and heat-insulating layer can serve the purpose of insulation and heat insulation, thereby greatly improving the flame retardant protection effect of the cable.

[0004] However, heat will be generated during the use of the cable. If the heat does not reach a certain temperature, the hollow ring will not break. In addition, the heat generated by the use of the cable will react with the pure water inside the hollow ring, causing the pure water to evaporate, thereby reducing the flame retardant effect. Summary of the invention

[0005] The purpose of the utility model is to provide a new type of cable with a flame retardant structure in view of the above-mentioned problems, so as to solve the problem that heat is generated during the use of the cable. When the heat does not reach a certain temperature, the hollow ring will not break, and the heat generated by the use of the cable will react with the pure water inside the hollow ring, causing the pure water to evaporate, thereby reducing the flame retardant effect.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: from the outside to the inside, it includes a protective layer, a flame retardant layer, an insulating layer and a central column in sequence, the outer wall of the central column is connected to a plurality of partitions with heat dissipation function, the partitions penetrate the insulating layer, the flame retardant layer and are in contact with the protective layer, a filling layer is formed between each of the partitions, the filling layer is connected to the cable body, the filling layer is filled with filling material, and the filling material is located on the outside around the cable.

[0007] Furthermore, the outer wall of the protective layer is provided with a plurality of heat dissipation holes.

[0008] Furthermore, the inner wall of the protective layer is provided with a plurality of arc-shaped grooves.

[0009] Furthermore, the inner walls on both sides of the flame retardant layer are made of a heat-sealed film, and the outer wall of the flame retardant layer is provided with a plurality of through grooves for accommodating the partitions.

[0010] Furthermore, the inner wall of the flame retardant layer is provided with a plurality of filling grooves, and the filling grooves are located between the through grooves and are not connected to each other.

[0011] Furthermore, the filling slot is filled with fever-reducing powder, and the fever-reducing powder is specifically an ultra-fine dry powder.

[0012] Furthermore, the outer walls on both sides of the partition are provided with a plurality of heat absorbing holes, one end of the heat absorbing hole is connected to the heat conducting hole, and the other end is connected to the filling layer.

[0013] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. When the utility model is used, a double-layer structure of a flame retardant layer and a partition is provided to provide flame retardant protection for the internal structure of the cable. When a fire occurs outside the cable or the cable is in a high temperature environment, the flame retardant layer can isolate the fire source, and the partition is convenient for dissipating the heat generated inside, thereby improving the performance of the cable. Since a filling groove is provided inside the flame retardant layer, and heat reducing powder is provided inside the filling groove, high temperature can increase the temperature of the flame retardant layer. When the cable is collided by external force in a high temperature environment, parts of the protective films on both sides of the flame retardant layer may be damaged. After the damage, the internal heat reducing powder is sprayed out, thereby achieving the purpose of extinguishing the fire source more safely, thereby greatly improving its flame retardant effect.

[0015] 2. The utility model isolates the wire core by setting an insulating layer. The wire core is located in the filling layer. Since the filling layer is filled with a fiber paste, which has the characteristics of being waterproof, moisture-proof and resistant to hydrogen evolution, the protection effect on the wire core is improved. At the same time, the wire core is limited by the multiple partitions set, which prevents the wire core from shifting and affecting normal use, and prevents the cable from being damaged by excessive bending angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a cross-sectional structural diagram of the utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the flame retardant layer of the utility model;

[0018] Figure 3 This is a partial planar structural diagram of the flame retardant layer of the utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the partition of the utility model;

[0020] Figure 5 For this utility model Figure 1 Enlarged structural diagram of area a in the middle.

[0021] In the accompanying drawings, 1-protective layer, 2-flame retardant layer, 3-insulating layer, 4-center column, 5-partition, 6-core, 7-filling layer, 11-heat dissipation hole, 12-arc groove, 21-through groove, 22-filling groove, 221-heat reducing powder, 51-thermal conductive hole, 52-heat absorbing hole. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described below with reference to the accompanying drawings.

[0023] In the description of the present invention, it should be understood that the terms "center", "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] See also Figure 1 , from outside to inside, it includes a protective layer 1, a flame retardant layer 2, an insulating layer 3 and a central column 4 in sequence, the outer wall of the central column 4 is connected to a plurality of partitions 5 with a heat dissipation function, the partitions 5 penetrate the insulating layer 3, the flame retardant layer 2 and contact the protective layer 1, and a filling layer 7 is formed between each of the partitions 5, the filling layer 7 is connected to the cable body, and the filling layer 7 is filled with a filling material, and the filling material is located on the outside around the cable; the internal structure of the cable is flame retardantly protected by setting a double-layer structure of the flame retardant layer 2 and the partition 5, When a fire occurs outside or the cable is in a high-temperature environment, the flame-retardant layer 2 can isolate the fire source, and the partition 5 is convenient for dissipating the temperature generated inside, thereby improving the performance of the cable. Since a filling groove 22 is provided inside the flame-retardant layer 2, and a heat-reducing powder 221 is provided inside the filling groove 22, high temperature can increase the temperature of the flame-retardant layer 2. When the cable is collided by external force in a high-temperature environment, parts of the protective film on both sides of the flame-retardant layer 2 may be damaged. After the damage, the internal heat-reducing powder 221 is sprayed out, which serves the purpose of extinguishing the fire source more safely and greatly improves its flame-retardant effect.

[0027] See also Figure 2-Figure 5The outer wall of the protective layer 1 is provided with a plurality of heat dissipation holes 11; the inner wall of the protective layer 1 is provided with a plurality of arc grooves 12; the inner walls of the inner and outer sides of the flame retardant layer 2 are both made of a heat-sealed film, and the outer wall of the flame retardant layer 2 is provided with a plurality of through grooves 21 for accommodating the partition 5; the inner wall of the flame retardant layer 2 is provided with a plurality of filling grooves 22, and the filling grooves 22 are located between the through grooves 21 and are not connected to each other; the filling grooves 22 are filled with heat reducing powder 221, and the heat reducing powder 221 is specifically a superfine dry powder; the outer walls on both sides of the partition 5 are provided with a plurality of heat absorbing holes 52, one end of the heat absorbing hole 52 is connected to the heat conducting hole 51, and the other end is connected to the filling layer 7; by setting the insulating layer 3 to isolate The core 6 is removed from the cable and is located in the filling layer 7. Since the filling layer 7 is filled with a fiber paste that is waterproof, moisture-proof and resistant to hydrogen evolution, the protection effect on the core 6 is improved. At the same time, the core 6 is limited by a plurality of partitions 5 to prevent the core 6 from shifting and affecting normal use, and to prevent the core 6 from being damaged by excessive cable bending angles. The outer walls of the plurality of partitions 5 are provided with a plurality of heat-absorbing holes 52 and heat-conducting holes 51, which facilitate the heat generated during the use of the cable to be introduced between the protective layer 1 and the flame-retardant layer 2, and introduced to the outside through the heat dissipation holes 11 provided on the outer wall of the protective layer 1, so as to achieve heat dissipation and improve the use effect and life of the cable.

[0028] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A new type of cable with flame retardant structure, characterized by: From the outside to the inside, the cable comprises a protective layer (1), a flame retardant layer (2), an insulating layer (3) and a central column (4); the outer wall of the central column (4) is connected to a plurality of partitions (5) with a heat dissipation function; the partitions (5) penetrate the insulating layer (3), the flame retardant layer (2) and the protective layer (1); a filling layer (7) is formed between each of the partitions (5); a wire core (6) is connected to the inside of the filling layer (7); the filling layer (7) is filled with a filling material; and the filling material is located on the outside of the cable.

2. A new type of cable with a flame retardant structure according to claim 1, characterized in that: The outer wall of the protective layer (1) is provided with a plurality of heat dissipation holes (11).

3. A new type of cable with a flame retardant structure according to claim 2, characterized in that: The inner wall of the protective layer (1) is provided with a plurality of arc-shaped grooves (12).

4. The new type of cable with flame retardant structure according to claim 1 is characterized in that: The inner walls on both sides of the flame retardant layer (2) are made of a heat-sealed film, and the outer wall of the flame retardant layer (2) is provided with a plurality of through grooves (21) for accommodating the partitions (5).

5. A new type of cable with a flame retardant structure according to claim 4, characterized in that: The inner wall of the flame retardant layer (2) is provided with a plurality of filling grooves (22), wherein the filling grooves (22) are located between the through grooves (21) and are not interconnected.

6. The new type of cable with flame retardant structure according to claim 5, characterized in that: The filling groove (22) is filled with heat-reducing powder (221).

7. The new type of cable with flame retardant structure according to claim 1, characterized in that: The outer walls on both sides of the partition (5) are provided with a plurality of heat absorbing holes (52), one end of the heat absorbing hole (52) is connected to the heat conducting hole (51), and the other end is connected to the filling layer (7).

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