Flame-retardant fireproof cable

Abstract

The utility model relates to the field of cables, and discloses a flame-retardant fireproof cable, which comprises a wire and a wear-resistant protective sleeve, the outer wall of the wire is fixedly connected with a first insulating layer, the outer wall of the first insulating layer is fixedly connected with a first flame-retardant layer, the inner wall of the wear-resistant protective sleeve is fixedly connected with a second flame-retardant layer, and the outer wall of the second flame-retardant layer is fixedly connected with a second flame-retardant layer. The inner wall of the second flame-retardant layer is fixedly connected with a second waterproof layer, the inner wall of the second waterproof layer is fixedly connected with a metal armor layer, the inner wall of the metal armor layer is fixedly connected with a compression-resistant layer, the inner wall of the compression-resistant layer is fixedly connected with a second insulating layer, and the inner wall of the second insulating layer is fixedly connected with a first waterproof layer. According to the utility model, through the second flame-retardant layer, the cable can be prevented from burning when a fire disaster occurs, the damage degree of the fire disaster to the cable is reduced, and through the first flame-retardant layer, the problem of spontaneous combustion of the cable caused by local overheating due to short circuit of the cable is solved.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a flame retardant and fireproof cable. Background Art

[0002] With the continuous development of social economy and the continuous advancement of modern science and technology, cable technology has also made great progress. Cable is an electrical device used to transmit power, signals and data. The main function of cable is to connect electrical equipment, transmit power, transmit signals and data. It is widely used in power systems, communication systems, buildings, transportation, industrial production and other fields.

[0003] However, most of the existing cables on the market are prone to burning in the event of a fire, which in turn causes damage to the cables. It is not easy to solve the problem of spontaneous combustion of cables caused by short circuits, and most cables are not easy to shield internal electromagnetic interference and external electromagnetic radiation.

[0004] Therefore, those skilled in the art provide a flame retardant and fireproof cable to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a flame retardant and fireproof cable, which can provide good mechanical protection for the cable through the metal armor layer to prevent the cable from being squeezed, stretched or damaged by the outside, and can effectively shield the electromagnetic interference inside the cable and the external electromagnetic radiation, thereby improving the anti-interference ability of the cable.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A flame retardant and fireproof cable, comprising a conductor and a wear-resistant protective sleeve, wherein the outer wall of the conductor is fixedly connected with a first insulating layer, the outer wall of the first insulating layer is fixedly connected with a first flame retardant layer, the inner wall of the wear-resistant protective sleeve is fixedly connected with a second flame retardant layer, the inner wall of the second flame retardant layer is fixedly connected with a second waterproof layer, the inner wall of the second waterproof layer is fixedly connected with a metal armor layer, the inner wall of the metal armor layer is fixedly connected with a pressure-resistant layer, the inner wall of the pressure-resistant layer is fixedly connected with the second insulating layer, the inner wall of the second insulating layer is fixedly connected with the first waterproof layer, and a filling layer is provided in a gap inside the first waterproof layer;

[0008] Through the above technical scheme, the second flame retardant layer can prevent the cable from burning in the event of a fire, reducing the degree of damage to the cable caused by the fire, and the first flame retardant layer solves the problem of spontaneous combustion of the cable caused by local overheating due to a short circuit in the cable.

[0009] Furthermore, three cotton threads are wound around the outer wall of the first flame retardant layer;

[0010] Through the above technical solution, it is convenient to wrap the conductor with three cotton threads to fix the position of the conductor and prevent the conductor from moving and rubbing in the cable, thereby maintaining the stability of the cable, buffering and protecting the conductor, and reducing the impact of external shocks on the conductor.

[0011] Furthermore, the first insulating layer and the second insulating layer are both made of cross-linked polyethylene material;

[0012] Through the above technical solution, the first insulating layer and the second insulating layer prevent the breakdown between the wires inside the cable and the external medium, and prevent the current from being short-circuited between the conductors or between the conductors and the external environment.

[0013] Furthermore, the first flame retardant layer and the second flame retardant layer are both made of flame retardant polyethylene material;

[0014] Through the above technical solution, the first flame retardant layer and the second flame retardant layer can reduce the degree of damage to the cable caused by fire in the event of a fire, and solve the problem of spontaneous combustion of the cable caused by local overheating due to a short circuit in the cable.

[0015] Furthermore, the first waterproof layer and the second waterproof layer are both made of cross-linked polyethylene material;

[0016] Through the above technical solution, the first waterproof layer and the second waterproof layer prevent moisture from penetrating into the interior of the cable, thereby protecting the materials inside the cable.

[0017] Furthermore, the metal armor layer is braided with tinned copper wire material;

[0018] Through the above technical solution, the metal armor layer can provide good mechanical protection for the cable, prevent the cable from being squeezed, stretched or damaged externally, and can effectively shield the electromagnetic interference inside the cable and the external electromagnetic radiation, thereby improving the anti-interference ability of the cable.

[0019] Furthermore, the pressure-resistant layer is made of polyamide fiber material;

[0020] Through the above technical solution, the pressure resistance of the cable is enhanced by the pressure-resistant layer to protect the materials inside the cable.

[0021] Furthermore, the wear-resistant protective cover is made of polyvinyl chloride material, and the filling layer is made of polypropylene material;

[0022] Through the above technical solution, the wear-resistant protective sleeve provides additional mechanical protection and protection for the cable to prevent the cable from being worn, scratched and chemically corroded. The filling layer fills the gaps inside the cable to fix the various components inside the cable to prevent the cable from vibrating, deforming or being damaged during use.

[0023] The utility model has the following beneficial effects:

[0024] 1. Compared with existing cables on the market, the flame-retardant and fireproof cable proposed by the utility model can prevent the cable from burning in the event of a fire through the second flame-retardant layer, thereby reducing the degree of damage to the cable caused by the fire, and solves the problem of spontaneous combustion of the cable caused by local overheating due to short circuit in the cable through the first flame-retardant layer.

[0025] 2. Compared with existing cables on the market, the flame-retardant and fire-proof cable proposed by the utility model can provide good mechanical protection for the cable through the metal armor layer to prevent the cable from being squeezed, stretched or damaged by the outside, and can effectively shield the electromagnetic interference inside the cable and the external electromagnetic radiation, thereby improving the anti-interference ability of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the main structure of a flame retardant and fireproof cable proposed by the utility model;

[0027] Figure 2 This is a side cross-sectional view of a flame retardant and fireproof cable proposed by the utility model;

[0028] Figure 3 A flame retardant and fireproof cable proposed by the utility model Figure 2 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Conductor; 2. First insulation layer; 3. First flame retardant layer; 4. Filling layer; 5. Cotton thread; 6. First waterproof layer; 7. Second insulation layer; 8. Pressure-resistant layer; 9. Metal armor layer; 10. Second waterproof layer; 11. Second flame retardant layer; 12. Wear-resistant protective cover. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-3The utility model provides an embodiment: a flame retardant and fireproof cable, comprising a conductor 1 and a wear-resistant protective sleeve 12, the outer wall of the conductor 1 is fixedly connected with a first insulating layer 2, the outer wall of the first insulating layer 2 is fixedly connected with a first flame retardant layer 3, the inner wall of the wear-resistant protective sleeve 12 is fixedly connected with a second flame retardant layer 11, the inner wall of the second flame retardant layer 11 is fixedly connected with a second waterproof layer 10, the inner wall of the second waterproof layer 10 is fixedly connected with a metal armor layer 9, the inner wall of the metal armor layer 9 is fixedly connected with a pressure-resistant layer 8, the inner wall of the pressure-resistant layer 8 is fixedly connected with a second insulating layer 7, the inner wall of the second insulating layer 7 is fixedly connected with a first waterproof layer 6, and the gap inside the first waterproof layer 6 is provided with a filling layer 4.

[0033] The metal armor layer 9 can provide good mechanical protection for the cable, prevent the cable from being squeezed, stretched or damaged externally, and can effectively shield the electromagnetic interference inside the cable and the external electromagnetic radiation, thereby improving the anti-interference ability of the cable.

[0034] Three cotton threads 5 are wound around the outer wall of the first flame retardant layer 3, which are convenient for wrapping the conductor 1 with the three cotton threads 5 to fix the position of the conductor 1, prevent the conductor 1 from moving and rubbing in the cable, thereby maintaining the stability of the cable, and play a role in buffering and protecting the conductor 1, reducing the impact of external shocks on the conductor 1. The first insulating layer 2 and the second insulating layer 7 are both made of cross-linked polyethylene material. The first insulating layer 2 and the second insulating layer 7 prevent the conductor 1 inside the cable from being broken down by the external medium, and prevent the current from being short-circuited between the conductors or between the conductors and the external environment. The first flame retardant layer 3 and the second flame retardant layer 11 are both made of flame-retardant polyethylene material. The first flame retardant layer 3 and the second flame retardant layer 11 can reduce the degree of damage to the cable in the event of a fire, and solve the problem of spontaneous combustion of the cable caused by local overheating due to a short circuit in the cable. The first waterproof layer 6 and the second waterproof layer 10 are both made of cross-linked polyethylene material. The waterproof layer 6 and the second waterproof layer 10 prevent moisture from penetrating into the interior of the cable, thereby protecting the materials inside the cable. The metal armor layer 9 is woven from tinned copper wire material. The metal armor layer 9 can provide good mechanical protection for the cable to prevent the cable from being squeezed, stretched or damaged externally, and can effectively shield the electromagnetic interference inside the cable and the external electromagnetic radiation, reduce the interference of the cable to external equipment or other circuits, and improve the anti-interference ability of the cable. The pressure-resistant layer 8 uses polyamide fiber material, and the pressure-resistant performance of the cable is enhanced by the pressure-resistant layer 8 to protect the materials inside the cable. The wear-resistant protective cover 12 uses polyvinyl chloride material, and the filling layer 4 uses polypropylene material. The wear-resistant protective cover 12 provides additional mechanical protection and protection for the cable to prevent the cable from being worn, scratched and chemically corroded. The filling layer 4 fills the gaps inside the cable to fix the various components inside the cable to prevent the cable from vibrating, deforming or being damaged during use.

[0035] Working principle: When using the flame-retardant and fireproof cable, firstly, the second flame-retardant layer 11 can prevent the cable from burning in the event of a fire, thereby reducing the degree of damage to the cable caused by the fire. Secondly, the first flame-retardant layer 3 solves the problem of spontaneous combustion of the cable caused by local overheating due to a short circuit in the cable. Finally, the metal armor layer 9 can effectively shield the electromagnetic interference inside the cable and the external electromagnetic radiation, thereby improving the anti-interference ability of the cable.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flame retardant and fireproof cable, comprising a conductor (1) and a wear-resistant protective sleeve (12), characterized in that: The outer wall of the conductor (1) is fixedly connected to a first insulating layer (2), the outer wall of the first insulating layer (2) is fixedly connected to a first flame retardant layer (3), the inner wall of the wear-resistant protective sleeve (12) is fixedly connected to a second flame retardant layer (11), the inner wall of the second flame retardant layer (11) is fixedly connected to a second waterproof layer (10), the inner wall of the second waterproof layer (10) is fixedly connected to a metal armor layer (9), the inner wall of the metal armor layer (9) is fixedly connected to a pressure-resistant layer (8), the inner wall of the pressure-resistant layer (8) is fixedly connected to a second insulating layer (7), the inner wall of the second insulating layer (7) is fixedly connected to a first waterproof layer (6), and a filling layer (4) is provided in a gap inside the first waterproof layer (6).

2. A flame retardant and fireproof cable according to claim 1, characterized in that: Three cotton threads (5) are wound around the outer wall of the first flame retardant layer (3).

3. The flame retardant and fireproof cable according to claim 1, characterized in that: The first insulating layer (2) and the second insulating layer (7) are both made of cross-linked polyethylene material.

4. The flame retardant and fireproof cable according to claim 1, characterized in that: The first flame retardant layer (3) and the second flame retardant layer (11) are both made of flame retardant polyethylene material.

5. The flame retardant and fireproof cable according to claim 1, characterized in that: The first waterproof layer (6) and the second waterproof layer (10) are both made of cross-linked polyethylene material.

6. The flame retardant and fireproof cable according to claim 1, characterized in that: The metal armor layer (9) is made by braiding tinned copper wire material.

7. The flame retardant and fireproof cable according to claim 1, characterized in that: The pressure-resistant layer (8) is made of polyamide fiber material.

8. The flame retardant and fireproof cable according to claim 1, characterized in that: The wear-resistant protective cover (12) is made of polyvinyl chloride material, and the filling layer (4) is made of polypropylene material.

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