Flame-retardant low-voltage power cable

Abstract

The utility model discloses a kind of flame-retardant low-voltage power cable, including electric core;Further include: the outside of the electric core is attached and connected with insulating layer, the outer wall of the insulating layer is fixedly connected with mica tape wrapping layer;Wherein, one side of mica tape wrapping layer is provided with support column, the outside of the support column is fixedly connected with partition frame, the middle of the partition frame is equipped with flame-retardant gas cavity;Wherein, the outside of partition frame is wrapped flame-retardant filling layer, the outside of the flame-retardant filling layer is wrapped with oxygen barrier layer, the outside of the oxygen barrier layer is fixedly connected with flame-retardant layer, the outside of the flame-retardant layer is fixedly connected with wear layer, by the setting of flame-retardant gas cavity in partition frame inside, gas in flame-retardant gas cavity is released in time, the effect of inhibiting combustion is realized, and under high temperature, aluminium hydroxide or magnesium hydroxide inorganic flame retardant decomposes heat absorption, reduces combustion temperature, simultaneously releases non-combustible gas, dilutes oxygen concentration, to further realize the effect of inhibiting combustion.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically a flame-retardant low-voltage power cable. Background Technology

[0002] Flame-retardant low-voltage electrical cables have excellent flame-retardant properties when in use, which can effectively delay the spread of flames, reduce fire risks, and buy valuable time for personnel evacuation and fire rescue. They produce very little smoke when burning and release no toxic or corrosive gases, which can greatly reduce "secondary hazards" in a fire and protect people's lives.

[0003] Patent document CN216928159U discloses a flame-retardant, heat-insulating low-voltage power cable, including a conductor. A filler is fixedly connected to the outer wall of the conductor, and an inner diaphragm is fixedly connected to the outer wall of the filler. A support plate is fixedly connected to the outer wall of the inner diaphragm, and an outer diaphragm is fixedly connected to the top of the support plate. When the flame-retardant, heat-insulating low-voltage power cable catches fire and burns through the outer diaphragm, flame-retardant gas in the interlayer between the inner and outer diaphragms overflows and isolates the air, extinguishing the flame on the flame-retardant, heat-insulating low-voltage power cable, delaying the power outage time of the conductor, extending the power supply during a fire, providing power support for firefighting and evacuation, and allowing flame-retardant gas from other uncatchable areas to replenish the ignited area, greatly extending the flame-retardant duration and exhibiting better flame-retardant performance. However, this patent still has the following problems in practical use:

[0004] This power cable uses flame-retardant gas to extinguish flames. However, due to the obstruction between the flame-retardant gas and the conductor by the filling layer and the inner diaphragm, it is difficult to extinguish the fire in time. In addition, the limited capacity of the flame-retardant gas results in poor fire extinguishing effect, thus making this flame-retardant low-voltage power cable less practical.

[0005] Therefore, a flame-retardant low-voltage power cable is proposed to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a flame-retardant low-voltage power cable to solve the problem mentioned in the background art that the current power cable achieves the effect of extinguishing flames through flame-retardant gas, but due to the obstruction of the filling layer and inner diaphragm between the flame-retardant gas and the conductor, it is difficult to extinguish the fire in time, and the capacity of the flame-retardant gas is limited, resulting in poor fire extinguishing effect, thus leading to poor practicality of the flame-retardant low-voltage power cable.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant low-voltage power cable, comprising a battery core;

[0008] Its characteristic is that it further includes:

[0009] An insulating layer is attached to the outside of the battery cell, and a mica tape wrapping layer is fixedly connected to the outer wall of the insulating layer.

[0010] Among them, a support column is provided on one side of the mica tape wrapping layer, and a partition frame is fixedly connected to the outside of the support column. A gas-resistant cavity is opened in the middle of the partition frame.

[0011] The partition frame is wrapped with a flame-retardant filling layer on the outside, an oxygen barrier layer on the outside of the flame-retardant filling layer, a flame-retardant layer fixedly connected to the outside of the oxygen barrier layer, and a wear-resistant layer fixedly connected to the outside of the flame-retardant layer.

[0012] Preferably, the number of separators is the same as the number of battery cells, which facilitates the connection between the separators and the outside of the battery cells.

[0013] Preferably, the separator is engaged with the outer side of the mica tape wrapping layer on the outside of the battery cell to reduce mutual interference between the battery cells.

[0014] Preferably, the flame-retardant cavity is filled with non-combustible carbon dioxide gas to facilitate the suppression of combustion.

[0015] Preferably, the flame-retardant filler layer is provided with an inorganic flame retardant such as aluminum hydroxide or magnesium hydroxide, which facilitates decomposition and heat absorption at high temperatures, reduces the combustion temperature, and releases non-flammable gases to dilute the oxygen concentration, thereby inhibiting combustion.

[0016] Preferably, the oxygen barrier layer is made of ceramicized silicone rubber coating, which facilitates the formation of a protective layer at high temperatures, isolating oxygen and heat, thereby delaying the spread of flames.

[0017] Preferably, the flame-retardant layer is made of halogen-free polymer material to achieve flame retardancy, while also reducing the generation of smoke and corrosive gases during combustion.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This flame-retardant low-voltage power cable, through the setting of the flame-retardant cavity inside the separator, facilitates the timely release of gas in the flame-retardant cavity, thereby achieving the effect of suppressing combustion. Furthermore, at high temperatures, the inorganic flame retardant aluminum hydroxide or magnesium hydroxide decomposes and absorbs heat, lowering the combustion temperature and releasing non-flammable gas, diluting the oxygen concentration, thus further achieving the effect of suppressing combustion. Moreover, the setting of the separator facilitates the reduction of mutual interference between the battery cells, thereby reducing the likelihood of low-voltage power cable fires. The specific details are as follows:

[0019] 1. The flame-retardant low-voltage power cable, through the setting of the flame-retardant chamber inside the separator frame, facilitates the timely release of gas in the flame-retardant chamber when a fire occurs, thereby achieving the effect of suppressing combustion, thus making the flame-retardant low-voltage power cable more practical.

[0020] 2. This flame-retardant low-voltage power cable uses a flame-retardant filling layer of aluminum hydroxide or magnesium hydroxide inorganic flame retardant to facilitate the decomposition and heat absorption of aluminum hydroxide or magnesium hydroxide inorganic flame retardant at high temperatures, thereby reducing the combustion temperature and releasing non-flammable gases to dilute the oxygen concentration, thus further inhibiting combustion. Therefore, this flame-retardant low-voltage power cable is more practical.

[0021] 3. This flame-retardant low-voltage power cable achieves flame-retardant effect on the battery core by setting a mica tape wrapping layer, and the setting of the separator frame helps to reduce mutual interference between the battery cores, thereby reducing the possibility of low-voltage power cable fires. Therefore, this flame-retardant low-voltage power cable is more practical. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the unfolded structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the flame-retardant filler layer structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the fire-retardant cavity structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the battery cell structure of this utility model.

[0027] In the diagram: 1. Battery cell; 2. Insulation layer; 3. Mica tape wrapping layer; 4. Support column; 5. Separator; 6. Flame-retardant cavity; 7. Flame-retardant filling layer; 8. Oxygen barrier layer; 9. Flame-retardant layer; 10. Wear-resistant layer. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-5This utility model provides a technical solution: a flame-retardant low-voltage power cable, including a battery core 1; further comprising: an insulation layer 2 attached to the outer side of the battery core 1, and a mica tape wrapping layer 3 fixedly connected to the outer wall of the insulation layer 2; wherein, a support column 4 is provided on one side of the mica tape wrapping layer 3, and a separator frame 5 is fixedly connected to the outer side of the support column 4, and a flame-retardant cavity 6 is opened in the middle of the separator frame 5; the number of separator frames 5 is the same as that of the battery core 1; the separator frame 5 is engaged with the outer side of the mica tape wrapping layer 3 on the outer side of the battery core 1; the middle of the flame-retardant cavity 6 is filled with non-combustible carbon dioxide gas; the separator frame 5 facilitates the separation of the battery core 1, thereby reducing mutual interference between the battery core 1 and reducing the combustion of the flame-retardant low-voltage power cable; at the same time, the addition of carbon dioxide gas to the flame-retardant cavity 6 facilitates the suppression of combustion, thus making the flame-retardant low-voltage power cable more practical.

[0030] The separator 5 is wrapped with a flame-retardant filling layer 7, which is then wrapped with an oxygen barrier layer 8. A flame-retardant layer 9 is fixedly connected to the outside of the oxygen barrier layer 8, and a wear-resistant layer 10 is fixedly connected to the outside of the flame-retardant layer 9. The flame-retardant filling layer 7 is made of aluminum hydroxide or magnesium hydroxide inorganic flame retardant. The oxygen barrier layer 8 is coated with ceramicized silicone rubber. The flame-retardant layer 9 is made of halogen-free polymer material. By using aluminum hydroxide or magnesium hydroxide inorganic flame retardant as the flame-retardant filling layer 7, it is easy to decompose and absorb heat at high temperatures, thereby reducing the combustion temperature and releasing non-flammable gases to dilute the oxygen concentration, thus further inhibiting combustion. In addition, the ceramicized silicone rubber coated oxygen barrier layer 8 can form a protective layer at high temperatures, isolating oxygen and heat, thereby delaying the spread of flames. Therefore, this flame-retardant low-voltage power cable is more practical.

[0031] Working principle: When using this flame-retardant low-voltage power cable, firstly, the insulation layer 2 is wrapped around the outside of the battery core 1, and then the mica tape wrapping layer 3 is evenly wrapped around the outside of the insulation layer 2.

[0032] Next, the mica tape wrapping layer 3 on the outside of the battery cell 1 is engaged with the middle of the partition frame 5 on the outside of the support column 4, and carbon dioxide gas is added to the middle of the flame-retardant cavity 6. Then, the flame-retardant filling layer 7, oxygen barrier layer 8, flame-retardant layer 9 and wear-resistant layer 10 are sequentially wrapped around the outside of the mica tape wrapping layer 3 and the partition frame 5.

[0033] Finally, when cell 1 burns, the flame reaches the separator 5, causing the carbon dioxide gas in the flame-retardant chamber 6 to be released. At high temperature, the inorganic flame retardant aluminum hydroxide or magnesium hydroxide decomposes and absorbs heat, reducing the combustion temperature. At the same time, it releases non-flammable gas and dilutes the oxygen concentration, thereby further suppressing combustion.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flame-retardant low-voltage power cable, comprising a battery core (1); Its features are, Also includes: An insulating layer (2) is attached to the outside of the battery cell (1), and a mica tape wrapping layer (3) is fixedly connected to the outer wall of the insulating layer (2). Among them, a support column (4) is provided on one side of the mica strip wrapping layer (3), and a partition frame (5) is fixedly connected to the outside of the support column (4). A fire-retardant cavity (6) is opened in the middle of the partition frame (5). Among them, the outer side of the partition (5) is wrapped with a flame-retardant filling layer (7), the outer side of the flame-retardant filling layer (7) is wrapped with an oxygen barrier layer (8), the outer side of the oxygen barrier layer (8) is fixedly connected with a flame-retardant layer (9), and the outer side of the flame-retardant layer (9) is fixedly connected with a wear-resistant layer (10).

2. The flame-retardant low-voltage power cable according to claim 1, characterized in that: The number of separators (5) is the same as the number of battery cells (1).

3. The flame-retardant low-voltage power cable according to claim 1, characterized in that: The separator (5) is engaged with the outer side of the mica tape wrapping layer (3) on the outside of the battery cell (1).

4. A flame-retardant low-voltage power cable according to claim 1, characterized in that: The flame-retardant chamber (6) is filled with non-combustible carbon dioxide gas.

5. A flame-retardant low-voltage power cable according to claim 1, characterized in that: The flame-retardant filler layer (7) is provided with an inorganic flame retardant of aluminum hydroxide or magnesium hydroxide.

6. A flame-retardant low-voltage power cable according to claim 1, characterized in that: The oxygen barrier layer (8) is coated with ceramicized silicone rubber.

7. A flame-retardant low-voltage power cable according to claim 1, characterized in that: The flame retardant layer (9) is made of halogen-free polymer material.

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