A type of B1 grade flame-retardant and high-temperature resistant wire and cable

Abstract

The utility model discloses a kind of B1-grade flame-retardant high-temperature-resistant wire cable, it is related to cable protection technical field, including cable core, multiple groups are set to cable core, multiple groups of cable core outside is sleeved with shielding layer, cable core and shielding layer are filled with insulating layer, shielding layer outside is sleeved with flame-retardant layer, flame-retardant layer outside is sleeved with high-temperature-resistant layer, high-temperature-resistant layer outside is sleeved with buffer layer, buffer layer includes multiple elastic buffer, multiple elastic buffer inside is provided with buffer cavity, buffer layer outside is sleeved with reinforcing layer, reinforcing layer includes support layer, support layer inside is provided with multiple compression ring, support layer outside is provided with armored layer. By multiple compression ring, the external impact received by wire cable is resisted, by armored layer, the external tension received by wire cable is resisted, and then avoid wire cable to be easily damaged by external impact and tension, effectively guarantee the fire-retardant effect of wire cable, improve the safety effect of wire cable.

Description

Technical Field

[0001] This utility model relates to the field of cable protection technology, and more specifically to a B1-grade flame-retardant and high-temperature resistant wire and cable. Background Technology

[0002] A cable is an electrical energy or signal transmission device, typically consisting of several or several groups of conductors (at least two conductors per group) twisted together in a rope-like manner. Each group of conductors is insulated from each other and is often twisted around a central core. The entire cable is covered with a highly insulating outer layer. Cables are characterized by being internally energized and externally insulated.

[0003] When existing high-temperature resistant cables encounter a fire during use, they are prone to damage due to their poor resistance to external forces. Damaged cables will have significantly reduced fire resistance and flame retardancy, which can easily lead to cable damage or even burnout. Utility Model Content

[0004] The purpose of this utility model is to provide a B1-grade flame-retardant high-temperature resistant wire and cable to solve the problem mentioned in the background art that when existing high-temperature resistant cables encounter fire during use, the cables are easily damaged when subjected to external impact due to their poor resistance to external forces, and the fire-retardant effect of the damaged cables will be greatly reduced.

[0005] To achieve the above objectives, this utility model provides a B1-grade flame-retardant and high-temperature resistant wire and cable, comprising a cable core, wherein multiple sets of cable cores are provided, and a shielding layer is sleeved on the outside of the multiple sets of cable cores. An insulation layer is filled between the cable core and the shielding layer. A flame-retardant layer is sleeved on the outside of the shielding layer. A high-temperature resistant layer is sleeved on the outside of the flame-retardant layer. A buffer layer is sleeved on the outside of the high-temperature resistant layer. The buffer layer includes multiple elastic buffer bodies, which are fixedly connected to each other. Each of the multiple elastic buffer bodies has a buffer cavity inside. A reinforcing layer is sleeved on the outside of the buffer layer. A sheath layer is sleeved on the outside of the reinforcing layer. The reinforcing layer includes a support layer. Multiple compression rings are provided on the inner side of the support layer. An armor layer is provided on the outer side of the support layer.

[0006] By adopting the above scheme, multiple pressure-resistant rings resist external impacts on the wires and cables, and the armor layer resists external tensile forces on the wires and cables, thereby preventing the wires and cables from being easily damaged by external impacts and tensile forces, effectively ensuring the fire-retardant effect of the wires and cables, and improving the safety of the wires and cables.

[0007] As a further improvement to this technical solution, the sheath layer is made of cross-linked polyethylene cable outer layer, and the outer surface of the sheath layer is coated with a flame-retardant and high-temperature resistant coating.

[0008] By adopting the above solution, the sheath layer protects the outside of the wires and cables, and the flame-retardant and high-temperature resistant coating improves the fire resistance of the sheath layer.

[0009] As a further improvement to this technical solution, multiple anti-compression rings are evenly distributed on the inner side of the support layer, and all of the multiple anti-compression rings are steel rings.

[0010] By adopting the above solution, multiple pressure-resistant rings are used to resist external impacts on the wires and cables, and the multiple evenly distributed pressure-resistant rings will not affect the overall bending effect of the wires and cables.

[0011] As a further improvement to this technical solution, multiple elastic buffers are wrapped around the outside of the high-temperature resistant layer, the transverse cross-section of the multiple elastic buffers is semi-circular, and the multiple elastic buffers are arranged in a ring array.

[0012] By adopting the above scheme, multiple elastic buffers and multiple buffer cavities are used to buffer the external pressure on the wires and cables, thereby improving the flexibility of the wires and cables.

[0013] As a further improvement to this technical solution, an elastic block is provided inside the buffer cavity, and the two ends of the elastic block abut against the two ends of the inner side of the buffer cavity, respectively.

[0014] By adopting the above solution, the elastic block absorbs external pressure, reducing the damage caused by pressure to wires and cables.

[0015] As a further improvement to this technical solution, the flame-retardant layer is made of flame-retardant and high-temperature resistant ceramic material, and the high-temperature resistant layer is made of polyimide material.

[0016] By adopting the above scheme, the flame-retardant layer and the high-temperature resistant layer improve the fire resistance and flame-retardant performance of wires and cables, making them less likely to be burned in the event of a fire.

[0017] As a further improvement to this technical solution, a heat insulation layer is provided between the flame-retardant layer and the high-temperature resistant layer. The heat insulation layer covers the outside of the flame-retardant layer and is made of magnesium carbonate material.

[0018] By adopting the above scheme, the heat insulation effect of wires and cables is improved by setting up a heat insulation layer, thereby further improving the fire resistance and flame retardant performance.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This B1-grade flame-retardant and high-temperature resistant wire and cable uses a buffer layer, multiple elastic buffer bodies and multiple buffer cavities to buffer the external pressure on the wire and cable, improve the flexibility of the wire and cable, and absorb external pressure through elastic blocks to reduce the damage caused by pressure to the wire and cable, effectively ensuring the service life of the wire and cable.

[0021] 2. This B1-grade flame-retardant and high-temperature resistant wire and cable features a reinforcing layer, multiple compression rings to resist external impacts, and an armor layer to resist external tensile forces. This design effectively prevents the wire and cable from being easily damaged by external impacts and tensions, ensuring its fire-retardant properties and improving its safety. Attached Figure Description

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

[0023] Figure 2 For utility model Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a schematic diagram of the reinforcing layer of the utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Cable core; 2. Shielding layer; 3. Insulation layer; 4. Flame retardant layer; 5. High temperature resistant layer; 6. Buffer layer; 61. Elastic buffer body; 62. Buffer cavity; 63. Elastic block; 7. Reinforcing layer; 71. Support layer; 72. Compression ring; 73. Armor layer; 8. Sheath layer; 9. Heat insulation layer. Detailed Implementation

[0027] 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.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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.

[0029] Please see Figures 1-3 As shown, this utility model provides a B1-grade flame-retardant and high-temperature resistant wire and cable, including a cable core 1, which is provided in multiple groups. A shielding layer 2 is sleeved on the outside of each group of cable cores 1. An insulation layer 3 is filled between the cable cores 1 and the shielding layer 2. The insulation layer 3 provides insulation protection for the multiple groups of cable cores 1, and the shielding layer 2 provides shielding protection for the multiple groups of cable cores 1, preventing signal interference. A flame-retardant layer 4 is sleeved on the outside of the shielding layer 2, and a high-temperature resistant layer 5 is sleeved on the outside of the flame-retardant layer 4. The flame-retardant layer 4 is made of flame-retardant and high-temperature resistant ceramic material, and the high-temperature resistant layer 5 is made of polyimide material. The flame-retardant layer 4 and the high-temperature resistant layer 5 improve the fire resistance and flame-retardant performance of the wire and cable, making it less likely to be burned in a fire. A heat insulation layer 9 is provided between the flame-retardant layer 4 and the high-temperature resistant layer 5, covering the outside of the flame-retardant layer 4. The heat insulation layer 9 is made of magnesium carbonate material. The heat insulation layer 9 is set to improve the heat insulation effect of the wires and cables, thereby further improving the fire resistance and flame retardant performance. A buffer layer 6 is sleeved on the outside of the high temperature resistant layer 5. The buffer layer 6 includes multiple elastic buffer bodies 61, which are fixedly connected to each other. Each elastic buffer body 61 has a buffer cavity 62 inside. The multiple elastic buffer bodies 61 cover the outside of the high temperature resistant layer 5. The transverse cross section of the multiple elastic buffer bodies 61 is semi-circular. The multiple elastic buffer bodies 61 are arranged in a ring array. The multiple elastic buffer bodies 61 and multiple buffer cavities 62 buffer the external pressure on the wires and cables, improving the flexibility of the wires and cables. An elastic block 63 is set inside the buffer cavity 62. The two ends of the elastic block 63 abut against the two ends of the inner side of the buffer cavity 62, and the elastic block 63 absorbs the external pressure, reducing the damage to the wires and cables caused by the pressure.

[0030] Please see Figure 1 and Figure 3As shown, a reinforcing layer 7 is sleeved outside the buffer layer 6, and a sheath layer 8 is sleeved outside the reinforcing layer 7. The sheath layer 8 is a cable outer layer made of cross-linked polyethylene, and the outer surface of the sheath layer 8 is coated with a flame-retardant and high-temperature resistant coating. The sheath layer 8 protects the outside of the wire and cable, and the flame-retardant and high-temperature resistant coating improves the fire resistance of the sheath layer 8. The reinforcing layer 7 includes a support layer 71, with multiple pressure-resistant rings 72 arranged inside the support layer 71 and an armor layer 73 arranged outside the support layer 71. The multiple pressure-resistant rings 72 are evenly distributed inside the support layer 71, and all of the multiple pressure-resistant rings 72 are steel rings. The multiple pressure-resistant rings 72 resist the external impact on the wire and cable, and the armor layer 73 resists the external tensile force on the wire and cable, thereby preventing the wire and cable from being easily damaged by external impact and tensile force, effectively ensuring the fire-retardant effect of the wire and cable, and the multiple evenly distributed pressure-resistant rings 72 do not affect the overall bending effect of the wire and cable.

[0031] The specific working principle of this utility model is as follows: multiple elastic buffer bodies 61 and multiple buffer cavities 62 are used to buffer the external compression of the wires and cables, thereby improving the flexibility of the wires and cables. The elastic block 63 absorbs the external pressure, reducing the damage caused by the pressure to the wires and cables. Multiple anti-compression rings 72 resist the external impact of the wires and cables. The armor layer 73 resists the external tension of the wires and cables, thereby preventing the wires and cables from being easily damaged by external impact and tension, and effectively ensuring the fireproof and flame-retardant effect of the wires and cables.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A B1 class flame retardant high temperature resistant electrical wire cable comprising a cable core (1), characterized in that: The cable core (1) is provided in multiple sets, and a shielding layer (2) is provided on the outside of the multiple sets of cable cores (1). An insulation layer (3) is filled between the cable core (1) and the shielding layer (2). A flame-retardant layer (4) is provided on the outside of the shielding layer (2). A high-temperature resistant layer (5) is provided on the outside of the flame-retardant layer (4). A buffer layer (6) is provided on the outside of the high-temperature resistant layer (5). The buffer layer (6) includes multiple elastic buffer bodies (61). The multiple elastic buffer bodies (61) are fixedly connected to each other. A buffer cavity (62) is provided inside each of the multiple elastic buffer bodies (61). A reinforcing layer (7) is provided on the outside of the buffer layer (6). A sheath layer (8) is provided on the outside of the reinforcing layer (7). The reinforcing layer (7) includes a support layer (71). Multiple pressure-resistant rings (72) are provided on the inside of the support layer (71). An armor layer (73) is provided on the outside of the support layer (71).

2. The B1-grade flame-retardant high-temperature resistant wire and cable according to claim 1, characterized in that: The sheath layer (8) is made of cross-linked polyethylene as the outer layer of the cable, and the outer surface of the sheath layer (8) is coated with a flame-retardant and high-temperature resistant coating.

3. The B1-grade flame-retardant high-temperature resistant wire and cable according to claim 1, characterized in that: Multiple pressure-resistant rings (72) are evenly distributed on the inner side of the support layer (71), and all of the multiple pressure-resistant rings (72) are steel rings.

4. The B1-grade flame-retardant high-temperature resistant wire and cable according to claim 1, characterized in that: Multiple elastic buffers (61) are wrapped around the outside of the high-temperature resistant layer (5). The transverse cross-section of the multiple elastic buffers (61) is semi-circular. The multiple elastic buffers (61) are arranged in a ring array.

5. A B1-grade flame-retardant high-temperature resistant wire and cable according to claim 1, characterized in that: An elastic block (63) is provided inside the buffer cavity (62), and the two ends of the elastic block (63) abut against the two ends of the inner side of the buffer cavity (62).

6. The B1-grade flame-retardant high-temperature resistant wire and cable according to claim 1, characterized in that: The flame-retardant layer (4) is made of flame-retardant and high-temperature resistant ceramic material, and the high-temperature resistant layer (5) is made of polyimide material.

7. A B1-grade flame-retardant high-temperature resistant wire and cable according to claim 1, characterized in that: A heat insulation layer (9) is provided between the flame retardant layer (4) and the high temperature resistant layer (5). The heat insulation layer (9) covers the outside of the flame retardant layer (4) and is made of magnesium carbonate material.

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