Fireproof cable with protective structure

Abstract

The utility model relates to cable technical field, and disclose a kind of fireproof cable with protection structure, including conductor, further include: setting at the surface of conductor fire -retardant mechanism, the surface of fire -retardant mechanism is sequentially provided with armored layer, waterproof layer and insulating layer from inside to outside;Fixedly sleeved in the surface of insulating layer protective shell, the inside of protective shell is provided with cavity;The utility model reduces the influence of fire -retardant mechanism when using, fire -retardant mechanism can reduce the influence of fire to cable inside spread and conductor, fire ring can reduce flame along cable in transverse direction continue to spread, and accordingly can reduce the consequence that more serious consequence is caused by fire along cable spread, in addition, the cavity in the inside of protective shell and support piece cooperation when using this cable, can improve the compression resistance of this cable, ensure the normal use of conductor, solve the problem that part of cable in use currently, flame is continuously combusted on the surface of cable, and fire along cable spread easily leads to more serious consequence.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a fireproof cable with a protective structure. Background Technology

[0002] A cable is a combination of one or more insulated conductors and an outer insulating protective layer. It is mainly used to transmit electrical energy or signals. The conductors in a cable are usually made of copper or aluminum and are responsible for conducting current.

[0003] Currently, during the installation of some cables, the unfolded cables are laid on the ground. External pressure directly acts on the surface of the cables, which can easily affect the conductors inside the cables. Furthermore, when there is a fire source in the surrounding environment, the flames can easily burn the surface of the cables, and the fire can cause even more serious impacts on the surrounding environment as it continues to burn along the cables. Utility Model Content

[0004] The purpose of this invention is to provide a fireproof cable with a protective structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire-resistant cable with a protective structure, comprising a conductor, and further comprising:

[0006] A flame-retardant mechanism is provided on the surface of a conductor, wherein an armor layer, a waterproof layer, and an insulating layer are sequentially provided on the surface of the flame-retardant mechanism from the inside out.

[0007] A protective shell is fixedly sleeved on the surface of the insulating layer, and the interior of the protective shell is provided with a cavity;

[0008] A flame arrestor ring is fixedly fitted onto the surface of the protective shell, and the inner wall of the flame arrestor ring is in contact with the surface of the protective shell.

[0009] Preferably, the flame-retardant mechanism has a shielding layer inside, the flame-retardant mechanism includes a filling layer wrapped around the surface of the conductor, the surface of the filling layer is provided with a fireproof layer, the shielding layer is disposed on the surface of the fireproof layer, and the surface of the shielding layer is covered with a fire-resistant layer.

[0010] Preferably, the inner wall of the protective shell has a groove, and a support piece is provided inside the groove.

[0011] Preferably, the filler layer is flame-retardant polyurethane foam, the fireproof layer is made of fiberglass woven layer, and the fire-resistant layer is made of low-smoke halogen-free flame-retardant material.

[0012] Preferably, the filling layer has reinforcing ribs embedded inside, and the shielding layer is made of aluminum foil.

[0013] Preferably, the waterproof layer is made of a waterproof and breathable membrane, and the surface of the insulating layer is coated with polyurethane coating.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] When in use, the flame-retardant mechanism of this invention can reduce the spread of fire into the cable and its impact on the conductor. The flame-retardant ring can reduce the continuous spread of flames along the cable laterally, thereby reducing the more serious consequences caused by the spread of fire along the cable. In addition, when this cable is in use, the internal cavity of the protective shell and the support plate work together to improve the compressive strength of the cable and ensure the normal use of the conductor. This solves the problem that some cables currently in use have flames that continue to burn on the cable surface and the fire spreads along the cable, which can easily lead to more serious consequences. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention with the flame arrestor ring disassembled;

[0018] Figure 3 This is a three-dimensional structural diagram of the protective shell and partial support pieces of this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the present invention with a partial cross-section.

[0020] In the diagram: 1. Conductor; 2. Flame-retardant mechanism; 21. Filler layer; 22. Fireproof layer; 23. Fire-resistant layer; 3. Shielding layer; 4. Armor layer; 5. Waterproof layer; 6. Insulation layer; 7. Protective shell; 8. Groove; 9. Support plate; 10. Flame-arresting ring; 11. Reinforcing rib. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4As shown, a fire-resistant cable with a protective structure includes a conductor 1. A flame-retardant mechanism 2 is provided on the surface of the conductor 1. The flame-retardant mechanism 2 includes a filler layer 21 wrapped around the surface of the conductor 1, a fire-resistant layer 22 on the surface of the filler layer 21, a shielding layer 3 on the surface of the fire-resistant layer 22, and a fire-resistant layer 23 fitted onto the surface of the shielding layer 3. The filler layer 21, fire-resistant layer 22, and fire-resistant layer 23 work together to increase the fire resistance of the cable. From the inside out, the surface of the fire-resistant layer 23 is provided with an armor layer 4, a waterproof layer 5, and an insulation layer 6. A protective layer is fixedly fitted onto the surface of the insulation layer 6. The protective shell 7 has an internal cavity, which increases the cable's compressive strength. The inner wall of the protective shell 7 has a groove 8, inside which a support piece 9 is installed. The support piece 9 supports external pressure, preventing direct external pressure on the conductor 1, thus improving the cable's compressive strength. The waterproof layer 5 is made of a waterproof and breathable membrane. The surface of the insulation layer 6 is coated with polyurethane paint. The combination of the waterproof layer 5 and the polyurethane paint on the insulation layer 6 improves the cable's waterproof performance during use, ensuring the normal operation of the conductor 1.

[0023] A flame arrestor ring 10 is fixedly fitted on the surface of the protective shell 7. The inner wall of the flame arrestor ring 10 is in contact with the surface of the protective shell 7. The flame arrestor ring 10 can block the spread of flames when the surface of the protective shell 7 is burning, thereby reducing the spread of fire.

[0024] The filling layer 21 is internally embedded with reinforcing ribs 11, which can increase the strength of the cable. The filling layer 21 is made of flame-retardant polyurethane foam. The fireproof layer 22 is made of fiberglass braided layer, which can reduce the spread of fire. The fireproof layer 23 is made of low-smoke halogen-free flame-retardant material, thus providing additional fire protection.

[0025] The shielding layer 3 is disposed between the fireproof layer 22 and the fireproof layer 23. The material of the shielding layer 3 is aluminum foil. Aluminum foil is lightweight and has good conductivity, which can provide good electromagnetic shielding for the cable.

[0026] Working principle: When the flame burns on the surface of the protective shell 7, the non-combustible flame arrestor ring 10 can reduce the possibility of the flame continuing to burn and spread. When the flame burns into the inside of the cable, the filling layer 21, the fireproof layer 22, and the fire-resistant layer 23 work together to block the flame from burning, preventing the flame from burning to the surface of the conductor 1 and causing serious damage to the conductor 1. When the operator installs the cable, the protective shell 7, the support plate 9, and the cavity inside the protective shell 7 work together to increase the pressure resistance of the cable and prevent external pressure from acting directly on the conductor 1, thereby improving the practicality of the cable.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire-resistant cable with a protective structure, comprising a conductor (1), characterized in that, Also includes: A flame-retardant mechanism (2) is provided on the surface of the conductor (1). The surface of the flame-retardant mechanism (2) is provided with an armor layer (4), a waterproof layer (5) and an insulating layer (6) from the inside to the outside. A protective shell (7) is fixedly sleeved on the surface of the insulating layer (6), and the interior of the protective shell (7) is provided with a cavity; A fire-arresting ring (10) is fixedly sleeved on the surface of the protective shell (7), and the inner wall of the fire-arresting ring (10) is in contact with the surface of the protective shell (7).

2. A fire-resistant cable with a protective structure according to claim 1, characterized in that: The flame-retardant mechanism (2) has a shielding layer (3) inside. The flame-retardant mechanism (2) includes a filling layer (21) wrapped around the surface of the conductor (1). The surface of the filling layer (21) is provided with a fireproof layer (22). The shielding layer (3) is provided on the surface of the fireproof layer (22). The surface of the shielding layer (3) is covered with a fireproof layer (23).

3. A fire-resistant cable with a protective structure according to claim 1, characterized in that: The inner wall of the protective shell (7) is provided with a groove (8), and a support piece (9) is provided inside the groove (8).

4. A fire-resistant cable with a protective structure according to claim 2, characterized in that: The filling layer (21) is flame-retardant polyurethane foam, the fireproof layer (22) is made of glass fiber woven layer, and the fireproof layer (23) is made of low smoke halogen-free flame-retardant material.

5. A fire-resistant cable with a protective structure according to claim 2, characterized in that: The filling layer (21) is embedded with reinforcing ribs (11), and the shielding layer (3) is made of aluminum foil.

6. A fire-resistant cable with a protective structure according to claim 1, characterized in that: The waterproof layer (5) is made of a waterproof and breathable membrane, and the surface of the insulating layer (6) is coated with polyurethane coating.

Images