Double-flame-retardant power cable for fire fighting

Abstract

The utility model discloses a fire-fighting double flame-retardant power cable, which comprises a cable body and an anti-corrosion rubber sleeve, the outer surface of the cable body is wrapped with a fireproof mica tape, the outer side of the fireproof mica tape is extruded with an outer sheath, the outer surface of the outer sheath is integrally molded with a plurality of protective strips, the anti-corrosion rubber sleeve contains a steel wire mesh, and the steel wire mesh is arranged in the anti-corrosion rubber sleeve. The cable comprises a cable body, a protective strip is arranged on the outer side of the cable body, an anti-corrosion rubber sleeve wraps the outer side of the protective strip, the outer surface of the anti-corrosion rubber sleeve is coated with a fireproof coating, a plurality of fixing hoops are connected to the outer side of the anti-corrosion rubber sleeve in a sleeved mode, the cable body comprises a plurality of sets of copper conductors, insulating layers are extruded on the outer sides of the copper conductors, and shielding layers are extruded on the outer sides of the insulating layers. According to the utility model, the cable body has very high fire resistance and heat insulation performance through the fireproof mica tape, so that a very good fireproof effect is achieved inside, and the fireproof coating plays a fireproof role outside, so that a double-layer fireproof flame-retardant role is achieved, and normal use of the cable is ensured.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a fire-fighting double flame-retardant power cable. Background Technology

[0002] Cables are typically rope-like cables made up of several or several groups of conductors (at least two conductors per group) twisted together. Each group of conductors is insulated from each other. Cables are characterized by being internally energized and externally insulated. Cables are further divided into fire-resistant cables, etc. Currently, fire-resistant cables are required in places with high fire safety requirements, such as high-rise buildings, large shopping malls, and high-rise residential buildings in China.

[0003] Currently, most existing fire-fighting power cables have simple structures, single functions, and poor flame-retardant effects. Most of them have a fireproof protective layer on the outermost layer with low strength. In harsh working environments or with too much gravel on the ground, the outer fireproof layer of the fire-fighting cable may be damaged, thus affecting the normal use of the fire-fighting cable. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that most existing fire-fighting power cables have simple structures, single functions, poor flame retardancy, and low strength of the outermost fireproof protective layer. In harsh working environments or with too much gravel on the ground, the outer fireproof layer of the fire-fighting cable will be damaged, thus affecting the normal use of the fire-fighting cable. Therefore, a double flame-retardant power cable for fire protection is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fire-fighting double flame-retardant power cable includes a cable body and an anti-corrosion rubber sheath. The outer surface of the cable body is wrapped with fire-resistant mica tape, and an outer sheath is extruded on the outside of the fire-resistant mica tape. Multiple protective strips are integrally formed on the outer surface of the outer sheath. The anti-corrosion rubber sheath contains steel wire mesh and wraps around the outside of the protective strips. The outer surface of the anti-corrosion rubber sheath is coated with a fire-retardant coating, and multiple fixing clamps are fitted on the outside of the anti-corrosion rubber sheath.

[0007] Furthermore, the cable body includes multiple sets of copper conductors, and an insulation layer is extruded on the outside of the copper conductors.

[0008] Furthermore, a shielding layer is extruded onto the outer side of the insulating layer.

[0009] Furthermore, the outer side of the shielding layer is covered with an armor layer.

[0010] Furthermore, the outer sides of the multiple sets of armor layers are extruded with a filler layer.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. The fire-resistant mica tape gives the cable body high fire resistance and heat insulation performance, thus playing a good fireproof role inside. Then, the fire-resistant coating plays a fireproof role on the outside, thus achieving a double-layer fireproof and flame-retardant effect to ensure the normal use of the cable.

[0013] 2. The anti-corrosion rubber sheath provides corrosion resistance to the cable body and reduces wear. The steel wire mesh inside increases the tensile strength and pressure resistance of the cable body, thereby extending the service life of the cable. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a fire-fighting double flame-retardant power cable proposed in this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of a fire-fighting double flame-retardant power cable proposed in this utility model;

[0016] Figure 3 This is a partially enlarged structural diagram of a fire-fighting double flame-retardant power cable proposed in this utility model.

[0017] In the diagram: 1. Outer sheath; 2. Protective strip; 3. Fireproof mica tape; 4. Filler layer; 5. Armor layer; 6. Shielding layer; 7. Insulation layer; 8. Copper conductor; 9. Corrosion-resistant rubber sleeve; 10. Steel wire mesh; 11. Fireproof coating; 12. Fixing clamp. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1-3 A fire-resistant double flame-retardant power cable includes a cable body and an anti-corrosion rubber sleeve 9. The outer surface of the cable body is wrapped with fire-resistant mica tape 3, which gives the cable body high fire resistance and heat insulation performance, thus playing a good fireproof role internally. An outer sheath 1 is extruded on the outside of the fire-resistant mica tape 3. Multiple protective strips 2 are integrally formed on the outer surface of the outer sheath 1. The anti-corrosion rubber sleeve 9 contains steel wire mesh 10. After the steel wire mesh 10 is wrapped on the mold of the anti-corrosion rubber sleeve 9, it can be formed by injection molding, thereby increasing the tensile strength and pressure resistance of the cable body. The anti-corrosion rubber sleeve 9 is wrapped around the outside of the protective strips 2. The outer surface of the anti-corrosion rubber sleeve 9 is coated with a fire-retardant coating 11, which plays a fireproof role externally, thus playing a good fireproof role. Multiple fixing clamps 12 are sleeved on the outside of the anti-corrosion rubber sleeve 9 to fix the anti-corrosion rubber sleeve 9.

[0020] The cable body includes multiple sets of copper conductors 8. An insulation layer 7 is extruded on the outside of the copper conductors 8, which gives the cable body good insulation performance. A shielding layer 6 is extruded on the outside of the insulation layer 7. The shielding layer 6 protects the signals inside the cable body from external interference and will not interfere with external equipment. An armor layer 5 is wrapped on the outside of the shielding layer 6, which enhances the tensile, compressive and bending resistance of the cable body, thereby improving the corrosion resistance of the cable body. A filler layer 4 is extruded on the outside of the multiple sets of armor layers 5.

[0021] The working principle of this embodiment is as follows: During use, the insulation layer 7 provides the cable body with good insulation performance. Then, the shielding layer 6 protects the signals inside the cable body from external interference and will not interfere with external equipment. Next, the armor layer 5 enhances the tensile, compressive, and bending resistance of the cable body, thereby improving the cable body's corrosion resistance. Then, the fireproof mica tape 3 gives the cable body high fire resistance and heat insulation performance, thus playing a good fireproof role internally. Then, the anti-corrosion rubber sleeve 9 gives the cable body corrosion resistance and reduces wear. The steel wire mesh 10 increases the tensile strength and compressive strength of the cable body. Finally, the fireproof coating 11 plays a fireproof role externally, thus playing a good fireproof role.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fire-fighting double flame-retardant power cable, comprising a cable body and a corrosion-resistant rubber sheath (9), characterized in that, The outer surface of the cable body is wrapped with fireproof mica tape (3), and an outer sheath (1) is extruded on the outside of the fireproof mica tape (3). Multiple protective strips (2) are integrally formed on the outer surface of the outer sheath (1). The anti-corrosion rubber sleeve (9) contains steel wire mesh (10). The anti-corrosion rubber sleeve (9) is wrapped around the outside of the protective strips (2). The outer surface of the anti-corrosion rubber sleeve (9) is coated with a fireproof coating (11). Multiple fixing clamps (12) are sleeved on the outside of the anti-corrosion rubber sleeve (9).

2. The fire-fighting double flame-retardant power cable according to claim 1, characterized in that, The cable body includes multiple sets of copper conductors (8), and the outer side of the copper conductors (8) is covered with an insulation layer (7).

3. A fire-fighting double flame-retardant power cable according to claim 2, characterized in that, The outer side of the insulating layer (7) is covered with a shielding layer (6).

4. A fire-fighting double flame-retardant power cable according to claim 3, characterized in that, The shielding layer (6) is wrapped with an armor layer (5) on the outside.

5. A fire-fighting double flame-retardant power cable according to claim 4, characterized in that, The outer side of the multiple sets of armor layers (5) is covered with a filling layer (4).

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