CN212010492U - Fireproof cable - Google Patents

Abstract

The utility model provides a fireproof cable, comprising a wire core, the wire core is wrapped by an insulating layer, a filling layer is arranged outside the insulating layer, a wrapping layer is arranged outside the filling layer, and the wrapping layer is outside A fireproof layer is provided, a copper sheath layer is provided outside the fireproof layer, a wear-resistant layer is provided outside the copper sheath layer, a fire-resistant layer is provided outside the wear-resistant layer, and the fire-blocking layer is provided with Flame retardant outer jacket layer. The utility model effectively improves the fire resistance and heat resistance of the cable.

Description

a fireproof cable

technical field

The utility model relates to the technical field of cables, in particular to a fireproof cable.

Background technique

With the improvement of people's living standards, more and more attention has been paid to fire safety. Generally, the insulating materials of cables are flammable. In the event of a fire, the cable will accelerate the spread of the fire, or the fault of the cable will cause a fire due to abnormal power consumption. , According to statistics, about 60% of the fire accidents are caused by electrical faults, and the existing fire-resistant cables have poor fire resistance and heat resistance, and cannot meet the current fire protection requirements.

Utility model content

The utility model provides a fireproof cable, which has solved the technical problem of poor fireproof and heat resistance performance of the existing fireproof cable mentioned in the above background.

The technical solution provided by the utility model is: a fireproof cable, comprising a wire core, the wire core is wrapped by an insulating layer, a filling layer is arranged outside the insulating layer, and a wrapping layer is arranged outside the filling layer, and the A fireproof layer is arranged outside the wrapping layer, a copper jacket layer is arranged outside the fireproof layer, a wear-resistant layer is arranged outside the copper jacket layer, and a fire-resistant layer is arranged outside the wear-resistant layer. A flame retardant outer sheath layer is arranged outside the layer.

Further, the insulating layer is a ceramicized low-smoke halogen-free polyolefin insulating layer, and when a fire is prevented, the fireproof cable does not generate toxic gas when it burns, thereby improving the safety when a fire occurs.

Further, the thickness of the copper sheath layer is 2-3 mm, which can improve the flame retardant performance while protecting the overall strength of the cable.

Further, the fireproof layer and the fireproof layer have the same thickness, which effectively improves the fireproof performance of the cable.

Further, the flame-retardant outer sheath layer is a low-smoke halogen-free flame-retardant outer sheath layer.

Compared with the prior art, the beneficial effects of the present utility model are:

The provided fireproof layer and fireproof layer can effectively improve the fire resistance performance; the provided insulating layer and flame retardant outer sheath layer can prevent the fire from burning, and the fireproof cable does not produce toxic gas, which improves the safety in the event of a fire The provided copper sheath layer can protect the overall strength of the cable and at the same time improve the flame retardant performance; the provided wear-resistant layer improves the abrasion resistance of the fireproof cable and prolongs the service life of the fireproof cable.

Description of drawings

FIG. 1 is a schematic structural diagram of the present utility model.

Figure 2 is a schematic diagram of the structure of the wire core of the present invention.

In the picture: 1. Core, 2. Insulation layer, 3. Filling layer, 4. Wrapping layer, 5. Fireproof layer, 6. Copper sheath layer, 7. Wear-resistant layer, 8. Fire-retardant layer, 9. Flame retardant outer jacket layer.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figure 1-2, a fireproof cable includes a wire core 1. The cable core 1 is formed by twisting a plurality of copper wires, so that the structure of the cable is more compact and the service life is longer. The wire core 1 is composed of The insulating layer 2 is wrapped, and the insulating layer 2 is a ceramicized low-smoke halogen-free polyolefin insulating layer, which effectively prevents the fire-resistant cable from burning and does not produce toxic gas when a fire occurs, and improves the safety in the event of a fire. A filling layer 3 is provided, and the filler 7 in the filling layer 3 is refractory glass fiber or ceramic fiber cotton to improve the fire resistance of the cable. The filling layer 3 is provided with a wrapping layer 4 outside the wrapping layer 4. It is a refractory mica tape, the wrapping layer 4 is provided with a fireproof layer 5, and the fireproof layer 5 is an inorganic mineral composite nanomaterial, so that the fireproof cable has low cost and good fireproof performance. The jacket layer 6, the thickness of the copper jacket layer 6 is 2-3 mm, which can improve the flame retardant performance while protecting the overall strength of the cable. The copper jacket layer 6 is provided with a wear-resistant layer 7, and the wear-resistant layer 7 It is made of wear-resistant rubber material, which improves the wear resistance of the fireproof cable and prolongs the service life of the fireproof cable. The wear-resistant layer 7 is provided with a fire-resistant layer 8 outside. The strength carbon fiber or ceramic fiber tape makes the cable fire-resistant temperature reach 1200 degrees, and the fire-resistant time reaches 180 minutes. The fire-resistant layer 8 is provided with a flame-retardant outer sheath layer 9, which is low-smoke and halogen-free The flame-retardant outer sheath can effectively prevent the fire-resistant cable from burning without producing toxic gas in the event of a fire, improving the safety in the event of a fire.

The working principle of the utility model is as follows: the fire resistance performance can be effectively improved through the fireproof layer 5 and the fireproof layer 8; when the insulating layer 2 and the flame-retardant outer sheath layer 9 are provided to prevent the occurrence of fire, the fireproof cable will not burn. Toxic gas can improve the safety in case of fire; the provided copper sheath layer 6 can protect the overall strength of the cable and at the same time improve the flame retardant performance; the provided wear-resistant layer 7 improves the abrasion resistance of the fireproof cable , extending the service life of the fireproof cable.

The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited to this, and any changes or substitutions that are not thought of through creative work should be included within the protection scope of the present utility model. . Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims (5)

1. A fire-resistant cable comprising a core (1), characterized in that: sinle silk (1) is wrapped up by insulating layer (2), insulating layer (2) are equipped with filling layer (3) outward, filling layer (3) are equipped with around covering (4) outward, be equipped with flame retardant coating (5) outward around covering (4), be equipped with copper sheathing layer (6) outward in flame retardant coating (5), copper sheathing layer (6) are equipped with wearing layer (7) outward, wearing layer (7) are equipped with back-fire relief layer (8) outward, back-fire relief layer (8) are equipped with fire-retardant oversheath layer (9) outward.

2. A fire-resistant cable according to claim 1, wherein: the insulating layer (2) is a ceramic low-smoke halogen-free polyolefin insulating layer.

3. A fire-resistant cable according to claim 1, wherein: the thickness of the copper sheath layer (6) is 2-3 mm.

4. A fire-resistant cable according to claim 1, wherein: the fire-proof layer (5) and the fire retardant layer (8) are the same in thickness.

5. A fire-resistant cable according to claim 1, wherein: the flame-retardant outer sheath layer (9) is a low-smoke halogen-free flame-retardant outer sheath layer.

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