Flexible insulated low-voltage cable

Abstract

The utility model discloses a flexible insulating low-voltage cable, which comprises an outer sheath, a first fireproof layer fixedly connected to the inner wall of the outer sheath, a first antistatic layer fixedly connected to the inner wall of the first fireproof layer, a plurality of cable cores annularly arranged in the middle of the outer sheath, a metal net fixedly connected to the outer walls of the plurality of cable cores, and a second antistatic layer fixedly connected to the inner wall of the metal net. A second anti-static layer is fixedly connected to the outer wall of the metal net, a second fireproof layer is fixedly connected to the outer wall of the second anti-static layer, a first flexible rod is installed in the middle of the outer sheath, and a plurality of second flexible rods are annularly installed on the outer side of the first flexible rod. Through the above structure, the cable core can be better protected, the cable core is not damaged when the outer sheath of the cable is on fire, and after the cable is bent, the cable is supported by the first flexible rod and the second flexible rod, so that the cable core can be prevented from being deformed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a kind of flexible insulation low-voltage cable. BACKGROUND

[0002] Flexible low-voltage cable is a kind of cable specially designed for low-voltage power transmission, with good flexibility and durability, suitable for use in mobile or frequently curved environment, flexible low-voltage cable has the advantages of strong flexibility, wear resistance, excellent electrical performance, can work in high temperature, low temperature, humid and other harsh environments, suitable for various industrial applications.

[0003] At present, existing after bending, due to the lack of elastic support inside the cable, cable core is prone to deformation after bending, which can easily affect the cable core. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of flexible insulation low-voltage cable, solve the problem that the cable core of existing flexible cable is prone to deformation when bending.

[0005] To achieve the above object, provide a kind of flexible insulation low-voltage cable, comprising: outer sheath, the first fireproof layer is fixedly connected in the outer sheath inner wall, the first anti-static layer is fixedly connected in the first fireproof layer inner wall, a plurality of cable cores are arranged in the outer sheath middle part in ring shape, a plurality of the cable core outer wall is fixedly connected with metal net, the second anti-static layer is fixedly connected in the metal net outer wall, the second fireproof layer is fixedly connected in the second anti-static layer outer wall;

[0006] The first flexible rod is installed in the outer sheath middle part, and a plurality of second flexible rods are installed in the outer side of the first flexible rod in ring shape.

[0007] According to the flexible insulation low-voltage cable, the first anti-static layer inner wall is fixedly connected with the heat insulation layer, and the heat insulation layer inner wall is fixedly connected with the connecting layer.

[0008] According to the flexible insulation low-voltage cable, one end of a plurality of the second flexible rods is fixedly connected with the connecting layer inner wall, and a plurality of the second flexible rods are arranged in an inclined manner, a filling layer is arranged between the connecting layer and the second fireproof layer, and a fire-retardant material is arranged in the filling layer.

[0009] According to the flexible insulation low-voltage cable, the first fireproof layer and the second fireproof layer are both ceramic fireproof and fire-resistant silica gel layer.

[0010] According to the flexible insulation low-voltage cable, the heat insulation layer is inorganic mineral, and the outer sheath is chain aluminum armor sheath.

[0011] According to the flexible insulation low-voltage cable, the first anti-static layer and the second anti-static layer are both polyethylene.

[0012] According to the flexible insulation low-voltage cable, the first flexible rod and the second flexible rod are both rubber.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、The utility model discloses a first fire -resistant layer, second fire -resistant layer and heat -insulating layer cooperate, can effectively protect the cable, make the outer sheath after the fire does not cause the damage of cable core.

[0015] 2、The utility model discloses a first flexible rod and second flexible rod are installed in the inside of cable, utilize first flexible rod and second flexible rod cooperate, make cable can support cable core after bending, make cable core not happen deformation.

[0016] The additional aspects and advantages of the utility model will be partly given in the following description, partly become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further explained in combination with the drawings and examples below;

[0018] Fig. 1 It is the sectional view of a flexible insulation low-voltage cable of the utility model;

[0019] Fig. 2 It is the cable core structure diagram of a flexible insulation low-voltage cable of the utility model;

[0020] Fig. 3 It is the flexible rod schematic diagram of a flexible insulation low-voltage cable of the utility model.

[0021] In the drawing: 1, outer sheath;2, first fire -resistant layer;3, first anti-static layer;4, heat -insulating layer;5, connecting layer;6, cable core;7, filling layer;8, first flexible rod;9, second flexible rod;10, second fire -resistant layer;11, second anti-static layer;12, metal net. DETAILED DESCRIPTION

[0022] The technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor all belong to the scope of the utility model protection.

[0023] Please refer toFigs. 1-3 The utility model discloses an technical scheme provided by an embodiment of the utility model: a kind of flexible insulation low-voltage cable, comprising: outer sheath 1, first fireproof layer 2 is fixedly connected in outer sheath 1 inner wall, first anti-static layer 3 is fixedly connected in first fireproof layer 2 inner wall, a plurality of cable cores 6 are arranged in the annular of outer sheath 1 middle part, metal net 12 is fixedly connected on the outer wall of a plurality of cable cores 6, second anti-static layer 11 is fixedly connected on the outer wall of metal net 12, second fireproof layer 10 is fixedly connected on the outer wall of second anti-static layer 11, with first fireproof layer 2 and second fireproof layer 10 double protection, can better protect cable core 6, improve the fireproof effect of cable;

[0024] First flexible rod 8 is installed in the middle part of outer sheath 1, a plurality of second flexible rods 9 are annularly installed on the outer side of first flexible rod 8, and the inside of the cable is supported by the first flexible rod 8 and the second flexible rod 9. When the cable is bent, the first flexible rod 8 and the second flexible rod 9 are also bent, but the cable is supported when it is bent, so that the cable core is prevented from deforming.

[0025] The inner wall of first anti-static layer 3 is fixedly connected with heat insulation layer 4, the inner wall of heat insulation layer 4 is fixedly connected with connecting layer 5, one end of a plurality of second flexible rods 9 is fixedly connected with the inner wall of connecting layer 5, a plurality of second flexible rods 9 are inclined, and the filling layer 7 is arranged between the connecting layer 5 and the second fireproof layer 10. The filling layer 7 is provided with a flame-retardant material, the first fireproof layer 2 and the second fireproof layer 10 are both ceramic fireproof and fire-resistant silica gel layers, which have good elasticity, high strength, excellent mechanical properties and electrical insulation properties, high tightness and good sealing of wrapping and longitudinal wrapping, and the characteristics of low smoke, halogen-free, heavy metal-free, non-toxic and harmless, non-melting and non-dripping. The heat insulation layer 4 is made of inorganic minerals, which has high temperature resistance and chemical stability. The outer sheath 1 is made of a chain aluminum sheath, which has low cost and unchanged fireproof effect. The first anti-static layer 3 and the second anti-static layer 11 are both made of polyethylene, which is odorless, non-toxic and has excellent low-temperature resistance. The first flexible rod 8 and the second flexible rod 9 are both made of rubber, which has good elasticity and wear resistance.

[0026] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the scope of knowledge possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A flexible insulated low voltage cable comprising: The utility model provides an outer sheath (1), it is characterized in that, first fire -resistant layer (2) is fixedly connected in the inner wall of outer sheath (1), first anti -static layer (3) is fixedly connected in the inner wall of first fire -resistant layer (2), a plurality of cable core (6) are arranged in the ring shape in the middle part of outer sheath (1), a plurality of cable core (6) outer wall fixedly connected with metal net (12), second anti -static layer (11) is fixedly connected with the outer wall of metal net (12), second anti -static layer (11) outer wall fixedly connected with second fire -resistant layer (10), First flexible rod (8) is installed in the middle part of outer sheath (1), and a plurality of second flexible rods (9) are annularly installed on the outer side of first flexible rod (8).

2. A flexible insulated low voltage cable according to claim 1, characterized in that: The inner wall of first anti -static layer (3) is fixedly connected with heat -insulating layer (4), and the inner wall of heat -insulating layer (4) is fixedly connected with connecting layer (5).

3. A flexible insulated low voltage cable according to claim 1, characterized in that: One end of a plurality of second flexible rods (9) is fixedly connected with the inner wall of connecting layer (5), and a plurality of second flexible rods (9) are arranged in an inclined manner, a filling layer (7) is arranged between connecting layer (5) and second fire -resistant layer (10), and the inside of filling layer (7) is provided with flame -retardant material.

4. A flexible insulated low voltage cable according to claim 1, characterized in that: First fire -resistant layer (2) and second fire -resistant layer (10) are both ceramic fire -resistant silicone gel layer.

5. A flexible insulated low voltage cable according to claim 2, characterized in that: The heat -insulating layer (4) uses inorganic mineral, and the outer sheath (1) uses chain aluminum sheath.

6. A flexible insulated low voltage cable according to claim 1, characterized in that: First anti -static layer (3) and second anti -static layer (11) are both polyethylene.

7. A flexible insulated low voltage cable according to claim 1, characterized in that: First flexible rod (8) and second flexible rod (9) are both rubber.

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