Sheath type low-smoke halogen-free flame-retardant cable

Abstract

The utility model discloses a sheath type low-smoke halogen-free flame-retardant cable, and relates to the technical field of cables. The sheath type low-smoke halogen-free flame-retardant cable comprises three groups of cable core conductors, a flame-retardant braided layer and a reinforcing structure, the three groups of cable core conductors are annularly distributed at equal intervals, protection structures are arranged on the outer walls of the cable core conductors, the flame-retardant braided layer is arranged on the outer walls of the three groups of protection structures, a steel wire rope is arranged in the flame-retardant braided layer, and the reinforcing structure is arranged in the steel wire rope. A low-smoke halogen-free flame retardant is filled between the flame-retardant braid layer and the steel wire rope, an outer sheath is arranged on the outer wall of the flame-retardant braid layer, and the reinforcing structure is arranged between the steel wire rope and the flame-retardant braid layer and is composed of a mounting gasket, a supporting column and a connecting gasket. The sheath type low-smoke halogen-free flame-retardant cable has a good flame-retardant effect, and also has a low-smoke halogen-free effect, so that the use environmental protection property of the cable is improved, the structural stability of the cable is relatively good, and the structural reliability of the cable in use is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a low-smoke, halogen-free, flame-retardant cable. Background Art

[0002] A polyolefin sheathed halogen-free low-smoke flame-retardant cable with a publication number of CN218471643U comprises a sheath body, a steel wire rope is arranged in the inner cavity of the sheath body, a cable core is arranged on the surface of the steel wire rope, the cable core is located in the inner cavity of the sheath body, the sheath body comprises an inner protective layer, a reinforcing layer is arranged on the surface of the inner protective layer, an outer protective layer is arranged on the surface of the reinforcing layer, and the inner protective layer comprises an insulating layer. The utility model has the advantages of flame retardancy and impact resistance through the coordinated use of steel wire rope, reinforcing layer, insulating layer, inner flame retardant layer, heat insulation layer, tensile layer, impact resistant layer, outer flame retardant layer, high temperature resistant layer and wear resistant layer, and solves the problem that in the case of fire in the existing low-smoke halogen-free cable, the flame will ignite the outer sheath of the cable, causing the fire to spread and cause great damage to the cable, and when impacted, the cable is weak in texture and easily breaks due to impact.

[0003] The above-mentioned polyolefin sheathed halogen-free low-smoke flame-retardant cable has poor structural stability in actual use and is prone to failure after being frequently bent during use. Therefore, it can be improved. Utility Model Content

[0004] The utility model aims to provide a sheathed low-smoke halogen-free flame-retardant cable, which can solve the problems of poor structural stability in actual use and easy failure due to frequent bending during use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sheathed low-smoke halogen-free flame-retardant cable, comprising a cable core conductor, a flame-retardant braided layer and a reinforcement structure. The number of cable core conductors is three groups and they are equidistantly distributed in a ring shape. A protective structure is arranged on the outer wall of the cable core conductor. The flame-retardant braided layer is arranged on the outer walls of the three groups of protective structures. A steel wire rope is arranged inside the flame-retardant braided layer. A low-smoke halogen-free flame retardant is filled between the flame-retardant braided layer and the steel wire rope. An outer sheath is arranged on the outer wall of the flame-retardant braided layer. The reinforcement structure is arranged between the steel wire rope and the flame-retardant braided layer. The reinforcement structure is composed of an installation gasket, a support column and a connecting gasket.

[0006] Preferably, the protective structure consists of a shielding layer, an insulating layer, an insulating shielding layer and an anti-corrosion layer. The shielding layer is glued and fixed to the outer wall of the cable core conductor, the insulating layer is glued and fixed to the outer wall of the shielding layer, the insulating shielding layer is fixedly sleeved on the outer wall of the insulating layer, and the anti-corrosion layer is glued and fixed to the outer wall of the insulating shielding layer.

[0007] Preferably, the shielding layer, the insulating layer and the anti-corrosion layer have the same thickness.

[0008] Preferably, the outer sheath consists of a thermal insulation protective layer, an impact-resistant protective layer, a waterproof protective layer and a wear-resistant protective layer. The thermal insulation protective layer is glued and fixed to the outer wall of the flame-retardant braided layer, the impact-resistant protective layer is glued and fixed to the outer wall of the thermal insulation protective layer, the waterproof protective layer is glued and fixed to the outer wall of the impact-resistant protective layer, and the wear-resistant protective layer is glued and fixed to the outer wall of the waterproof protective layer.

[0009] Preferably, the heat-insulating protective layer is heat-insulating fiber, the impact-resistant protective layer is elastic fiber, the waterproof protective layer is waterproof rubber, and the wear-resistant protective layer is wear-resistant rubber.

[0010] Preferably, the mounting gasket is fixedly mounted on the outer wall of the steel wire rope, the connecting gasket is fixedly mounted on the inner wall of the flame-retardant braided layer, and both ends of the support column are fixedly connected to the mounting gasket and the connecting gasket respectively.

[0011] Preferably, two groups of reinforcement rods are fixedly mounted on the inner wall of the connection gasket, and one end of the two groups of reinforcement rods are fixedly connected to the support column, so that the support column and the connection gasket are more stable.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The sheathed low-smoke halogen-free flame-retardant cable has good flame-retardant effect and low-smoke halogen-free effect by setting the low-smoke halogen-free flame retardant, which improves the environmental friendliness of the cable. The heat-insulating protective layer has good heat-insulating effect, which can reduce the high temperature of the cable outlet caused by the external temperature. The impact-resistant protective layer has good resilience and shaping ability after being impacted, which can reduce the deformation of the cable outlet. The waterproof protective layer has good waterproof performance, which can prevent water vapor from invading the low-smoke halogen-free flame retardant and causing damage to it. The wear-resistant protective layer has good wear-resistant effect, which can reduce the excessive wear of the cable.

[0014] (2) The sheathed low-smoke halogen-free flame-retardant cable has good structural stability through the coordinated use of installation gaskets, support columns, connecting gaskets and reinforcement rods, thereby ensuring the structural reliability of the cable during use and enhancing the practicality of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is an enlarged view of part A of the utility model;

[0018] Figure 3 It is an enlarged view of part B of the present utility model.

[0019] Figure numerals: 1. Cable core conductor; 2. Protection structure; 21. Shielding layer; 22. Insulation layer; 23. Insulation shielding layer; 24. Anti-corrosion layer; 3. Steel wire rope; 4. Low-smoke halogen-free flame retardant; 5. Flame-retardant braided layer; 6. Outer sheath; 61. Thermal insulation protective layer; 62. Impact-resistant protective layer; 63. Waterproof protective layer; 64. Wear-resistant protective layer; 7. Installation gasket; 8. Support column; 9. Connecting gasket; 10. Reinforcement rod. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0021] See also Figure 1-3 The utility model provides a technical solution: a sheathed low-smoke halogen-free flame-retardant cable, comprising a cable core conductor 1, a flame-retardant braided layer 5 and a reinforcement structure. The number of cable core conductors 1 is three groups and they are equidistantly distributed in a ring shape. A protective structure 2 is arranged on the outer wall of the cable core conductor 1. The flame-retardant braided layer 5 is arranged on the outer walls of the three groups of protective structures 2. A steel wire rope 3 is arranged inside the flame-retardant braided layer 5. A low-smoke halogen-free flame retardant 4 is filled between the flame-retardant braided layer 5 and the steel wire rope 3. Through the arrangement of the low-smoke halogen-free flame retardant 4, the cable has a good flame retardant effect and a low-smoke halogen-free effect, thereby improving the environmental friendliness of the cable. An outer sheath 6 is arranged on the outer wall of the flame-retardant braided layer 5. The reinforcement structure is arranged between the steel wire rope 3 and the flame-retardant braided layer 5. The reinforcement structure consists of an installation gasket 7, a support column 8 and a connecting gasket 9.

[0022] The protective structure 2 is composed of a shielding layer 21, an insulating layer 22, an insulating shielding layer 23 and an anti-corrosion layer 24. The shielding layer 21 is glued and fixed to the outer wall of the cable core conductor 1, the insulating layer 22 is glued and fixed to the outer wall of the shielding layer 21, the insulating shielding layer 23 is fixedly sleeved on the outer wall of the insulating layer 22, and the anti-corrosion layer 24 is glued and fixed to the outer wall of the insulating shielding layer 23. The thicknesses of the shielding layer 21, the insulating layer 22 and the anti-corrosion layer 24 are all the same.

[0023] The outer sheath 6 is composed of a heat-insulating protective layer 61, an impact-resistant protective layer 62, a waterproof protective layer 63 and a wear-resistant protective layer 64. The heat-insulating protective layer 61 is fixed to the outer wall of the flame-retardant braided layer 5, the impact-resistant protective layer 62 is fixed to the outer wall of the heat-insulating protective layer 61, the waterproof protective layer 63 is fixed to the outer wall of the impact-resistant protective layer 62, and the wear-resistant protective layer 64 is fixed to the outer wall of the waterproof protective layer 63. The heat-insulating protective layer 61 is a heat-insulating fiber. By setting the heat-insulating protective layer 61, the cable has a good heat-insulating effect, which can reduce the high temperature of the cable outlet caused by the external temperature. Temperature phenomenon, the impact-resistant protective layer 62 is elastic fiber. Through the setting of the impact-resistant protective layer 62, the cable has good resilience and shaping ability after being impacted, which can reduce the deformation of the cable outlet. The waterproof protective layer 63 is waterproof rubber. Through the setting of the waterproof protective layer 63, the cable has good waterproof performance and can prevent water vapor from invading the low-smoke halogen-free flame retardant 4 and causing damage to it. The wear-resistant protective layer 64 is wear-resistant rubber. Through the setting of the wear-resistant protective layer 64, the cable has good wear-resistant effect and can reduce the phenomenon of excessive wear of the cable.

[0024] The mounting gasket 7 is fixedly mounted on the outer wall of the steel wire rope 3, the connecting gasket 9 is fixedly mounted on the inner wall of the flame-retardant braided layer 5, the two ends of the support column 8 are fixedly connected to the mounting gasket 7 and the connecting gasket 9 respectively, and two groups of reinforcement rods 10 are fixedly mounted on the inner wall of the connecting gasket 9, and one end of the two groups of reinforcement rods 10 are fixedly connected to the support column 8, so that the structural stability of the cable itself is better, the structural reliability of the cable when in use is ensured, and the practicality of the cable is enhanced.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A sheathed low-smoke halogen-free flame-retardant cable, characterized in that: include: The cable core conductors (1) are in three groups and are equidistantly distributed in a ring shape, and a protective structure (2) is provided on the outer wall of the cable core conductor (1); A flame retardant braided layer (5) is arranged on the outer wall of the three groups of protective structures (2), a steel wire rope (3) is arranged inside the flame retardant braided layer (5), a low-smoke halogen-free flame retardant (4) is filled between the flame retardant braided layer (5) and the steel wire rope (3), and an outer sheath (6) is arranged on the outer wall of the flame retardant braided layer (5); A reinforcement structure is arranged between the steel wire rope (3) and the flame-retardant braided layer (5), and the reinforcement structure is composed of a mounting gasket (7), a support column (8) and a connecting gasket (9).

2. A sheathed low-smoke halogen-free flame-retardant cable according to claim 1, characterized in that: The protective structure (2) is composed of a shielding layer (21), an insulating layer (22), an insulating shielding layer (23) and an anti-corrosion layer (24); the shielding layer (21) is glued and fixed to the outer wall of the cable core conductor (1); the insulating layer (22) is glued and fixed to the outer wall of the shielding layer (21); the insulating shielding layer (23) is fixedly sleeved on the outer wall of the insulating layer (22); and the anti-corrosion layer (24) is glued and fixed to the outer wall of the insulating shielding layer (23).

3. A sheathed low-smoke halogen-free flame-retardant cable according to claim 2, characterized in that: The shielding layer (21), the insulating layer (22) and the anti-corrosion layer (24) are all of the same thickness.

4. A sheathed low-smoke halogen-free flame-retardant cable according to claim 3, characterized in that: The outer sheath (6) is composed of a heat-insulating protective layer (61), an impact-resistant protective layer (62), a waterproof protective layer (63) and a wear-resistant protective layer (64); the heat-insulating protective layer (61) is glued and fixed to the outer wall of the flame-retardant braided layer (5); the impact-resistant protective layer (62) is glued and fixed to the outer wall of the heat-insulating protective layer (61); the waterproof protective layer (63) is glued and fixed to the outer wall of the impact-resistant protective layer (62); and the wear-resistant protective layer (64) is glued and fixed to the outer wall of the waterproof protective layer (63).

5. A sheathed low-smoke halogen-free flame-retardant cable according to claim 4, characterized in that: The heat-insulating protective layer (61) is heat-insulating fiber, the impact-resistant protective layer (62) is elastic fiber, the waterproof protective layer (63) is waterproof rubber, and the wear-resistant protective layer (64) is wear-resistant rubber.

6. A sheathed low-smoke halogen-free flame-retardant cable according to claim 5, characterized in that: The mounting gasket (7) is fixedly mounted on the outer wall of the steel wire rope (3), the connecting gasket (9) is fixedly mounted on the inner wall of the flame-retardant braided layer (5), and the two ends of the support column (8) are fixedly connected to the mounting gasket (7) and the connecting gasket (9), respectively.

7. A sheathed low-smoke halogen-free flame-retardant cable according to claim 6, characterized in that: Two groups of reinforcement rods (10) are fixedly mounted on the inner wall of the connection gasket (9), and one end of the two groups of reinforcement rods (10) is fixedly connected to the support column (8).

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