Power cable with fireproof and flame-retardant functions

Abstract

The utility model discloses a power cable with fireproof and flame-retardant functions, which comprises a protection structure, a silica gel filling layer and a cable core structure, and is characterized in that the protection structure is arranged, a polyvinyl chloride sheath and a fireproof coating are added, so that flame retardance can be preliminarily carried out, external water can be effectively prevented from entering the cable by using a polyurethane waterproof layer, and the service life of the cable is prolonged. The mica tape fire-resistant layer can block the combustion and spreading of flames, the cable core structure is arranged, and the flame-retardant layer is arranged between the copper strip shielding layer and the polyaniline shielding layer, so that the flame-retardant performance of the cable is improved, the comprehensive fireproof and flame-retardant effects are achieved, the flame spreading speed is slowed down, the rescue difficulty is reduced, and the loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field related to power cables, and in particular to a power cable with fire-proof and flame-retardant functions. Background Art

[0002] Cables are usually made of several or several groups of wires twisted together like ropes. Each group of wires is insulated from each other and often twisted around a central wire. The entire outside is covered with a highly insulating covering. The cable has the characteristics of being electrified inside and insulated outside.

[0003] Announcement No. CN220774018U discloses "A Power Cable with Good Tensile Resistance", which includes an anti-corrosion inner sleeve, an insulating protective layer for preventing core leakage is provided in the inner cavity of the anti-corrosion inner sleeve, a core is provided in the inner cavity of the insulating protective layer, a hemp rope is provided between the outer surface of the anti-corrosion inner sleeve and the outer surface of the insulating protective layer, and an anti-tensile mechanism is sleeved on the outer surface of the anti-corrosion inner sleeve, the tensile mechanism includes a tensile layer, a spring is fused and connected inside the tensile layer, and the spring has good elasticity and restoring properties. When the cable is pulled, twisted or wound, the spring gives the cable a certain elasticity, and under the action of the rebound force, the tension exerted on the cable can be buffered, that is, the tension exerted on the cable is reduced, and the cable is prevented from being damaged by excessive tension. After the force is applied, the cable can be quickly restored to avoid cable deformation, thereby improving the tensile resistance of the power cable.

[0004] Although the above-mentioned power cable with good tensile strength has certain advantages in tensile strength, its fire retardancy is not comprehensive enough to effectively prevent the cable from catching fire when a fire occurs, and it cannot achieve the effect of heat insulation and high temperature resistance, causing the fire to spread rapidly, increasing the difficulty of rescue, and easily causing greater losses. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a power cable with fire-proof and flame-retardant functions.

[0006] In order to achieve the above-mentioned objectives, the utility model adopts the following technical solutions: a power cable with fire-retardant functions, comprising a protective structure, a silicone filling layer and a cable core structure, a silicone filling layer being provided inside the protective structure, and the silicone filling layer being bonded to the outer wall of the cable core structure, the protective structure comprising a polyvinyl chloride sheath, a polyurethane waterproof layer, a nitrile rubber layer and a mica tape fire-resistant layer, the inner wall of the polyvinyl chloride sheath being provided with a polyurethane waterproof layer, the inner wall of the polyurethane waterproof layer being covered with a nitrile rubber layer, the inner wall of the nitrile rubber layer being covered with a mica tape fire-resistant layer, and the inner wall of the mica tape fire-resistant layer being bonded to the silicone filling layer.

[0007] Optionally, the cable core structure comprises a conductor, a polyethylene insulation layer, a copper tape shielding layer and a polyaniline shielding layer, the outer wall of the conductor is covered with the polyethylene insulation layer, the outer wall of the polyethylene insulation layer is sleeved with the copper tape shielding layer, the outer wall of the copper tape shielding layer is sleeved with the polyaniline shielding layer, and the outer wall of the polyaniline shielding layer is attached to the silica gel filling layer.

[0008] Optionally, the outer wall of the polyvinyl chloride sheath is coated with fireproof paint, and the fireproof paint contains a flame retardant.

[0009] Optionally, the outer wall of the silica gel filling layer is applied with the mica tape fireproof layer in a winding manner, the fireproof layer is formed by multiple layers of winding, and the mica tape is closely attached without bubbles or overlaps during the winding process.

[0010] Optionally, the conductor adopts a tight twisting design.

[0011] Optionally, the polyethylene insulation layer covers the outer wall of the conductor by an extrusion molding process.

[0012] Optionally, a flame-retardant layer is added between the copper tape shielding layer and the polyaniline shielding layer.

[0013] The utility model discloses the beneficial effect of:

[0014] The utility model discloses a kind of power cable with fire-retardant function, by being provided with protection structure, by the addition of polyvinyl chloride sheath and fireproof paint, preliminary flame-retardant can be carried out, using polyurethane waterproof layer can effectively prevent the water from outside, using mica tape fireproof layer can block the combustion and spread of flame, by being provided with cable core structure, copper tape shielding layer and polyaniline shielding layer between flame-retardant layer is provided, it is convenient to improve the flame-retardant performance of cable, reach the effect of fire-retardant overall, slow down the speed of flame spread, reduce the difficulty of rescue, reduce loss. DETAILED DESCRIPTION

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the internal structure plan view of the structure of the utility model;

[0017] Figure 3 It is the protection structure schematic diagram of the utility model;

[0018] Figure 4 It is the cable core structure schematic diagram of the utility model;

[0019] Figure 5 It is the structure of the utility model Figure 1 A place local amplification diagram of the utility model.

[0020] Wherein: protective structure-1, silica gel filling layer-2, cable core structure-3, polyvinyl chloride sheath-11, polyurethane waterproof layer-12, nitrile rubber layer-13, mica tape fireproof layer-14, conductor-31, polyethylene insulation layer-32, copper tape shielding layer-33, polyaniline shielding layer-34. DETAILED DESCRIPTION

[0021] In order to further explain the technical scheme of the utility model, the following specific embodiments are described in detail.

[0022] Please refer to Figure 1-3 The utility model provides a kind of power cable with fireproof flame-retardant function, including protective structure 1, silica gel filling layer 2 and cable core structure 3, the inside of protective structure 1 is provided with silica gel filling layer 2, silica gel filling layer 2 is attached with the outer wall of cable core structure 3, protective structure 1 includes polyvinyl chloride sheath 11, polyurethane waterproof layer 12, nitrile rubber layer 13 and mica tape fireproof layer 14, the inner wall of polyvinyl chloride sheath 11 is provided with polyurethane waterproof layer 12, the inner wall of polyurethane waterproof layer 12 is equipped with nitrile rubber layer 13, the inner wall of nitrile rubber layer 13 is covered with mica tape fireproof layer 14, the inner wall of mica tape fireproof layer 14 is attached with silica gel filling layer 2, the outer wall of polyvinyl chloride sheath 11 is coated with fireproof paint, and fireproof paint contains flame retardant, it is convenient to improve the flame-retardant property of cable by flame retardant, mica tape fireproof layer 14 is applied in the outer wall of silica gel filling layer 2 in the form of winding, and fireproof layer is formed by winding, in winding process, mica tape is closely attached, without bubble or overlap, to facilitate guaranteeing the integrity and uniformity of fireproof layer.

[0023] Please refer to Figure 4-5 The utility model provides a kind of power cable with fireproof flame-retardant function, cable core structure 3 includes conductor 31, polyethylene insulation layer 32, copper tape shielding layer 33 and polyaniline shielding layer 34, the outer wall of conductor 31 is covered with polyethylene insulation layer 32, the outer wall of polyethylene insulation layer 32 is equipped with copper tape shielding layer 33, the outer wall of copper tape shielding layer 33 is equipped with polyaniline shielding layer 34, and the outer wall of polyaniline shielding layer 34 is attached with silica gel filling layer 2, conductor 31 adopts the design of close twisting, to reduce air circulation, reduce flame spread speed, polyethylene insulation layer 32 is covered on the outer wall of conductor 31 by extrusion molding process, to facilitate forming uniform protective layer, flame-retardant layer is increased between copper tape shielding layer 33 and polyaniline shielding layer 34, to prevent flame spread.

[0024] Working principle is as follows:

[0025] First, first, the novel cable is laid in the required position, and circuit connection is carried out;

[0026] Second, by polyvinyl chloride sheath 11 outer wall coated with flame retardant, can effectively to the flame preliminary barrier, by setting the polyurethane waterproof layer 12, polyurethane has good flexibility, can maintain its performance in a wide temperature range, and can prevent the outside water into, by setting the nitrile rubber layer 13, but the Qing rubber has good aging resistance, oil and fuel has excellent resistance, and provides good temperature adaptability, by setting the mica tape fire resistance layer 14, since the mica tape fire resistance layer 14 is applied in the form of winding in the outer wall of silica gel filling layer 2, by multilayer winding forms a fire resistance layer, in the winding process, the mica tape closely, no bubbles or overlap, help to ensure the integrity and uniformity of fire resistance layer;

[0027] Third, by copper shielding layer 33 and polyaniline shielding layer 34 between the increase of flame retardant layer, can effectively block the flame spread, conductor 31 adopts the design of tight twisting, to reduce air circulation, reduce the speed of flame spread, achieve the effect of fire prevention and flame retardant, slow down the speed of flame spread, reduce the difficulty of rescue, reduce the loss.

[0028] The control mode of the utility model is controlled by manually starting and closing the switch, and the wiring diagram of the power element and the provision of the power supply are common knowledge in the art, and the utility model is mainly used for protecting mechanical devices, so the control mode and the wiring arrangement of the utility model will not be explained in detail.

[0029] The control mode of the utility model is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art, and the provision of the power supply also belongs to the common knowledge in the art, and the utility model is mainly used for protecting mechanical devices, so the control mode and the circuit connection of the utility model will not be explained in detail.

[0030] The above is only the preferred example of the utility model, and is not used for limiting the utility model, although the utility model is described in detail with reference to the foregoing embodiments, the person skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A fire-retardant power cable, characterized in that: The invention comprises a protective structure (1), a silica gel filling layer (2) and a cable core structure (3); the silica gel filling layer (2) is provided inside the protective structure (1); the silica gel filling layer (2) is bonded to the outer wall of the cable core structure (3); the protective structure (1) comprises a polyvinyl chloride sheath (11), a polyurethane waterproof layer (12), a nitrile rubber layer (13) and a mica tape fire-resistant layer (14); the inner wall of the polyvinyl chloride sheath (11) is provided with the polyurethane waterproof layer (12); the inner wall of the polyurethane waterproof layer (12) is covered with the nitrile rubber layer (13); the inner wall of the nitrile rubber layer (13) is coated with the mica tape fire-resistant layer (14); and the inner wall of the mica tape fire-resistant layer (14) is bonded to the silica gel filling layer (2).

2. The fire-retardant power cable according to claim 1, characterized in that: The cable core structure (3) comprises a conductor (31), a polyethylene insulation layer (32), a copper tape shielding layer (33) and a polyaniline shielding layer (34); the outer wall of the conductor (31) is coated with the polyethylene insulation layer (32); the outer wall of the polyethylene insulation layer (32) is sheathed with the copper tape shielding layer (33); the outer wall of the copper tape shielding layer (33) is sheathed with the polyaniline shielding layer (34); and the outer wall of the polyaniline shielding layer (34) is in contact with the silica gel filling layer (2).

3. The fire-retardant power cable according to claim 1, characterized in that: The outer wall of the polyvinyl chloride sheath (11) is coated with a fire retardant coating, and the fire retardant coating contains a flame retardant.

4. The fire-retardant power cable according to claim 1, characterized in that: The mica tape fire-resistant layer (14) is applied to the outer wall of the silica gel filling layer (2) in a winding manner, and the fire-resistant layer is formed by multi-layer winding. During the winding process, the mica tape is tightly attached without bubbles or overlap.

5. The fire-retardant power cable according to claim 2, characterized in that: The conductor (31) is of tightly twisted design.

6. The fire-retardant power cable according to claim 2, characterized in that: The polyethylene insulation layer (32) is formed by an extrusion molding process to cover the outer wall of the conductor (31).

7. The fire-retardant power cable according to claim 2, characterized in that: A flame retardant layer is added between the copper tape shielding layer (33) and the polyaniline shielding layer (34).

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