Fireproof cable with multiple protective layers
By setting up multiple layers of protective layers in the cable, including insulating layer, inner sealing layer, inner fireproof layer, fire insulation layer and outer fireproof layer, the problem of poor fireproof effect of the cable is solved, and the high fire resistance of the cable and the safety of the battery cell are achieved.
Patent Information
- Application Number
- CN202421802404.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing cables have poor fire resistance, and the fire can easily damage the internal battery cells when burning.
A fire-resistant cable with multi-layer protective layer is designed, including an insulating layer, an inner sealing layer, an inner fire-proof layer, a fire-proof layer and an outer fire-proof layer. A flame-retardant layer woven with magnesium oxide powder and a metal wire is formed, and the battery core is isolated through an annular support cylinder, and the inner and outer sealing layer encloses the air circulation.
It effectively improves the fire resistance of the cable, prevents the fire from expanding, protects the internal battery cell from damage, and the battery cell is not easily affected by each other.
Smart Images
Figure CN223123650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire-resistant cables, in particular to a fire-resistant cable with a multi-layer protective layer. Background Art
[0002] Electric wires and cables are wire products used to transmit electric energy, information and realize the conversion of electromagnetic energy. In a broad sense, electric wires and cables are also simply called cables. In a narrow sense, a cable refers to an insulated cable, which can be defined as an aggregate composed of the following parts: one or more insulated wire cores, and their respective possible coating layers, total protective layer and outer protective layer. A cable can also have additional non-insulated conductors.
[0003] Most of the existing electric wires and cables are made by combining multiple layers of rubber sleeves, which have the advantages of wear resistance, waterproofness and easy stretching. However, there are still obvious defects in actual use, such as:
[0004] There are many interference factors that the cable needs to deal with during use, but the existing cables have a very poor fire prevention effect. The all-rubber material will cause the fire to damage the internal electric cores after burning, thus affecting daily use;
[0005] Therefore, a fire-resistant cable with a multi-layer protective layer is designed now to solve such defects. Content of the Utility Model
[0006] In view of the deficiencies of the prior art, the utility model provides a fire-resistant cable with a multi-layer protective layer, which solves the problem of poor fire prevention effect of the existing cables.
[0007] To achieve the above object, the utility model is realized through the following technical solutions: A fire-resistant cable with a multi-layer protective layer includes an insulating layer arranged inside a rubber sleeve. An inner sealing layer is installed on the surface of the insulating layer. An inner fireproof layer is installed on the inner sealing layer. A fire separation layer is installed on the surface of the inner fireproof layer. An outer fireproof layer is installed on the surface of the fire separation layer. An outer sealing layer is arranged between the outer fireproof layer and the inner wall of the rubber sleeve.
[0008] Preferably, the outer sealing layer and the inner sealing layer are adhesively bonded to the rubber sleeve and the insulating layer respectively.
[0009] Preferably, an annular support cylinder is arranged inside the insulating layer. Isolation grooves are formed at the top of the annular support cylinder, and a plurality of isolation grooves are provided. Electric cores are arranged inside the annular support cylinder.
[0010] Preferably, a filling layer is arranged inside the insulating layer, and the filling layer is in contact with the annular support cylinder and the electric cores.
[0011] Preferably, both the inner fireproof layer and the outer fireproof layer are made of magnesium oxide powder, and the fire separation layer is woven by intersecting metal wires.
[0012] Preferably, both the outer sealing layer and the inner sealing layer are PVC material films.
[0013] Beneficial effects
[0014] The utility model provides a fire-resistant cable with multiple protective layers. Compared with the existing technology, it has the following beneficial effects:
[0015] (1) For the fire-resistant cable with multiple protective layers, an inner fireproof layer, a fire separation layer and an outer fireproof layer are arranged between the outer sealing layer and the inner sealing layer. The settings of these structures can bind the inner fireproof layer and the outer fireproof layer and make them fully fit with the fire separation layer, allowing the inner fireproof layer and the outer fireproof layer to penetrate into the gaps of the fire separation layer. Coupled with the non-combustible property of the fire separation layer itself, it can effectively form a flame retardant layer, avoid the fire from damaging the internal battery cells, and effectively improve the overall fire resistance.
[0016] (2) For the fire-resistant cable with multiple protective layers, an annular support cylinder is installed inside the insulating layer, and battery cells are arranged inside the annular support cylinder. The settings of these structures can use the multiple spaces inside the annular support cylinder to block the battery cells, ensuring that the combustion of a single battery cell will not affect the other battery cells. Moreover, the functions of the inner sealing layer, the inner fireproof layer and the fire separation layer can effectively reduce the entry of external air and prevent the entry of internal oxygen, effectively avoiding the spread of fire. Description of the drawings
[0017] Figure 1 is a schematic structural diagram of the utility model;
[0018] Figure 2 is a sectional view of the structure of the utility model;
[0019] Figure 3 is a schematic diagram of the annular support cylinder and the isolation groove structure of the utility model.
[0020] In the figure: 1, rubber sleeve; 2, insulating layer; 3, inner sealing layer; 4, inner fireproof layer; 5, fire separation layer; 6, outer fireproof layer; 7, outer sealing layer; 8, annular support cylinder; 9, isolation groove; 10, battery cell; 11, filling layer. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.
[0022] Please refer toFigures 1-3 , the present utility model provides a technical solution: a fire-resistant cable with a multi-layer protective layer, including an insulating layer 2 disposed inside a rubber sleeve 1, an annular support cylinder 8 is disposed inside the insulating layer 2, an isolation groove 9 is opened at the top of the annular support cylinder 8, and a plurality of isolation grooves 9 are provided. A core 10 is disposed inside the annular support cylinder 8, a filling layer 11 is disposed inside the insulating layer 2, and the filling layer 11 is in contact with the annular support cylinder 8 and the core 10.
[0023] During use, the function of the annular support cylinder 8 is to isolate a plurality of cores 10, so as to avoid the influence on the remaining cores 10 when one of the cores 10 is short-circuited.
[0024] An inner sealing layer 3 is installed on the surface of the insulating layer 2, an inner fireproof layer 4 is installed on the inner sealing layer 3, an isolation fire layer 5 is installed on the surface of the inner fireproof layer 4, the isolation fire layer 5 is formed by cross-weaving metal wires, an outer fireproof layer 6 is installed on the surface of the isolation fire layer 5, both the inner fireproof layer 4 and the outer fireproof layer 6 are made of magnesium oxide powder. An outer sealing layer 7 is provided between the outer fireproof layer 6 and the inner wall of the rubber sleeve 1. Both the outer sealing layer 7 and the inner sealing layer 3 are made of PVC material films, and the outer sealing layer 7 and the inner sealing layer 3 are adhesively attached to the rubber sleeve 1 and the insulating layer 2 respectively.
[0025] The isolation fire layer 5, the inner fireproof layer 4 and the outer fireproof layer 6 are located between the outer sealing layer 7 and the inner sealing layer 3, so that the isolation fire layer 5, the inner fireproof layer 4 and the outer fireproof layer 6 form an integrated body. The isolation fire layer 5 itself is made of a metal material and cannot be burned. At the same time, the inner fireproof layer 4 and the outer fireproof layer 6 are located inside and outside the isolation fire layer 5 and can penetrate into the gaps of the isolation fire layer 5 for filling. With the characteristics of the inner fireproof layer 4 and the outer fireproof layer 6, a flame retardant layer can be effectively formed, which has an obvious fire-resistant function. At the same time, the inner sealing layer 3 and the outer sealing layer 7 can seal the outer fireproof layer 6 and the inner fireproof layer 4 to avoid leakage.
[0026] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.
Claims
1. A fire-resistant cable with a multi-layer protective layer, comprising an insulating layer (2) disposed inside a rubber sleeve (1), characterized in that: An inner sealing layer (3) is mounted on the surface of the insulating layer (2), an inner fireproof layer (4) is mounted on the inner sealing layer (3), a fire separation layer (5) is mounted on the surface of the inner fireproof layer (4), an outer fireproof layer (6) is mounted on the surface of the fire separation layer (5), and an outer sealing layer (7) is provided between the outer fireproof layer (6) and the inner wall of the rubber sleeve (1).
2. The fire-resistant cable with a multi-layer protective layer according to claim 1, wherein: The outer sealing layer (7) and the inner sealing layer (3) are respectively adhered and fitted to the rubber sleeve (1) and the insulating layer (2).
3. The fire-resistant cable with a multi-layer protective layer according to claim 2, characterized in that: An annular support cylinder (8) is provided inside the insulating layer (2), isolation grooves (9) are formed at the top of the annular support cylinder (8), and a plurality of isolation grooves (9) are provided. A battery core (10) is provided inside the annular support cylinder (8).
4. A fire-resistant cable with a multi-layer protective layer according to claim 3, characterized in that: A filling layer (11) is provided inside the insulating layer (2), and the filling layer (11) is in contact with the annular support cylinder (8) and the battery core (10).
5. A fire-resistant cable with a multi-layer protective layer according to claim 1, characterized in that: Both the inner fireproof layer (4) and the outer fireproof layer (6) are made of magnesium oxide powder, and the fire separation layer (5) is formed by cross-weaving metal wires.
6. A fire-resistant cable with a multi-layer protective layer according to claim 1, characterized in that: Both the outer sealing layer (7) and the inner sealing layer (3) are PVC material films.