Low-smoke halogen-free environment-friendly cable

Abstract

The utility model relates to the technical field of cables, in particular to a low-smoke halogen-free environment-friendly cable which comprises a supporting column, a plurality of connecting grooves are formed in the supporting column, wires are fixedly arranged in the connecting grooves, a first insulating layer is wrapped on the surface of the supporting column, a first steel mesh layer is wrapped on the surface of the first insulating layer, and a second steel mesh layer is wrapped on the surface of the second insulating layer. The surface of the first steel mesh layer is wrapped with a first flame-retardant layer, and an isolation sleeve is fixedly arranged on the surface of the first flame-retardant layer. According to the utility model, through the arrangement of the support column and the first steel mesh layer, different wires are fixed in different connecting grooves in the support column during use, so that the different wires are isolated from each other, mutual extrusion among the different wires is avoided, and the support column can also improve the stability of the internal structure of the whole cable; and the surface of the first insulating layer is wrapped by the first steel mesh layer, so that the anti-pressure capability of the whole cable is improved, and the effect of avoiding performance reduction caused by mutual extrusion due to the fact that a plurality of wires are directly installed in the cable is achieved.

Description

Technical Field

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

[0002] Cable is an electric energy or signal transmission device, usually composed of several or several groups of wires. Power cable is mainly used for high-voltage electric energy transmission in generation, distribution, transmission, transformation and power supply lines. It uses large currents ranging from tens of amperes to thousands of amperes and high voltages from 220V to 500kV and above. The commonly used low-smoke halogen-free cables can also be called environmentally friendly cables. Most of the low-smoke halogen-free cables are used in places with strict environmental hygiene requirements. It is a very environmentally friendly cable with good smoke density and no corrosive gas escape when burned. It is widely used in various fields.

[0003] However, traditional low-smoke halogen-free cables lack supporting functions. When the outside of the cable is pressed during use, the internal wires are easily squeezed against each other, causing the insulation layer on the surface of the wires to wear against each other and accelerate aging. In addition, traditional low-smoke halogen-free cables lack fixing functions. When in use, when the external flame burns to the halogen-free flame retardant particles, the halogen-free flame retardant particles are easily leaked, causing the entire cable to lose its flame retardant effect. Utility Model Content

[0004] The utility model aims to provide a low-smoke, halogen-free, environmentally friendly cable to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-smoke, halogen-free and environmentally friendly cable, comprising a support column, a plurality of connection slots are provided inside the support column, wires are fixedly arranged inside the connection slots, a surface of the support column is wrapped with a first insulating layer, and a surface of the first insulating layer is wrapped with a first steel mesh layer;

[0007] The surface of the first steel mesh layer is wrapped with a first flame retardant layer, the surface of the first flame retardant layer is fixedly provided with an isolation sleeve, the outer surface of the isolation sleeve is fixedly provided with a plurality of first isolation strips, the inner surface of the isolation sleeve is fixedly provided with a plurality of second isolation strips, the surface of the isolation sleeve is wrapped with a second flame retardant layer, a plurality of first filling chambers are formed between the second flame retardant layer and the first isolation strips, a plurality of second filling chambers are formed between the first flame retardant layer and the second isolation strips, and a plurality of flame retardant particles are filled inside the first filling chambers and the second filling chambers.

[0008] Preferably, the surface of the conductive wire is wrapped with a second insulating layer, and the surface of the second flame-retardant layer is wrapped with a second steel mesh layer.

[0009] Preferably, the surface of the second steel mesh layer is wrapped with a waterproof layer, and the surface of the waterproof layer is wrapped with a corrosion-resistant layer.

[0010] Preferably, the surface of the corrosion-resistant layer is wrapped with a first wear-resistant layer, and the surface of the first wear-resistant layer is wrapped with a second wear-resistant layer.

[0011] Preferably, a first fixing rubber strip is fixedly provided at the connection between the first isolation strip and the second flame retardant layer, and a second fixing rubber strip is fixedly provided at the connection between the second isolation strip and the first flame retardant layer.

[0012] Preferably, a plurality of grooves are formed on the inner surface of the connection groove, and the width of the grooves is slightly larger than the width of the wire.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This low-smoke, halogen-free and environmentally friendly cable, through the arrangement of a support column and a first steel mesh layer, fixes different wires in different connection grooves inside the support column during use, isolates different wires from each other, avoids mutual squeezing between different wires, and the support column can also improve the stability of the internal structure of the entire cable. The first steel mesh layer is then wrapped around the surface of the first insulating layer to increase the overall cable compression resistance, thereby achieving the effect of avoiding the performance degradation caused by direct installation of multiple wires inside the cable and mutual squeezing.

[0015] 2. This low-smoke halogen-free environmentally friendly cable, through the arrangement of the isolation sleeve, the first isolation strip and the second isolation strip, when in use, the first filling chamber and the second filling chamber formed between the first isolation strip and the second isolation strip and the first flame retardant layer and the second flame retardant layer can make the internal flame retardant particles evenly distributed, ensuring that the fire resistance of the cable in different parts is more balanced, and through the arrangement of the first flame retardant layer and the second flame retardant layer, the multi-layer flame retardant layer can further improve the flame retardant performance of the entire cable, thereby achieving the effect of preventing the flame retardant particles from falling off when the flame burns to the flame retardant particles, causing the entire cable to lose its flame retardant performance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the support column of the utility model;

[0018] Figure 3 For the utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0019] Figure 4 For the utility model Figure 1 Enlarged schematic diagram of point B in the middle.

[0020] In the figure: 1. support column; 2. connecting groove; 3. wire; 4. first insulating layer; 5. first steel mesh layer; 6. first flame retardant layer; 7. isolation sleeve; 8. first isolation strip; 9. second isolation strip; 10. second flame retardant layer; 11. first filling chamber; 12. second filling chamber; 13. flame retardant particles; 14. second insulating layer; 15. second steel mesh layer; 16. waterproof layer; 17. corrosion-resistant layer; 18. first wear-resistant layer; 19. second wear-resistant layer; 20. first fixing rubber strip; 21. second fixing rubber strip; 22. groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 As shown, the utility model provides a technical solution: a low-smoke halogen-free environmentally friendly cable, including a support column 1, a plurality of connection grooves 2 are opened inside the support column 1, a wire 3 is fixedly arranged inside the connection groove 2, the surface of the support column 1 is wrapped with a first insulating layer 4, and the surface of the first insulating layer 4 is wrapped with a first steel mesh layer 5;

[0023] In this embodiment, by setting the support column 1 and the first steel mesh layer 5, different wires 3 are fixed in different connection slots 2 inside the support column 1 during use, so that different wires 3 are isolated from each other to avoid mutual extrusion between different wires 3, and the support column 1 can also improve the stability of the internal structure of the entire cable, and then the first steel mesh layer 5 is wrapped on the surface of the first insulating layer 4 to increase the overall cable compression resistance, thereby achieving the effect of avoiding the direct installation of multiple wires 3 inside the cable to squeeze each other and cause performance degradation;

[0024] like Figure 4 As shown, the surface of the first steel mesh layer 5 is wrapped with a first flame retardant layer 6, the surface of the first flame retardant layer 6 is fixedly provided with an isolation sleeve 7, the outer surface of the isolation sleeve 7 is fixedly provided with a plurality of first isolation strips 8, the inner surface of the isolation sleeve 7 is fixedly provided with a plurality of second isolation strips 9, the surface of the isolation sleeve 7 is wrapped with a second flame retardant layer 10, a plurality of first filling chambers 11 are formed between the second flame retardant layer 10 and the first isolation strips 8, a plurality of second filling chambers 12 are formed between the first flame retardant layer 6 and the second isolation strips 9, and a plurality of flame retardant particles 13 are filled inside the first filling chamber 11 and the second filling chamber 12;

[0025] In this embodiment, by setting the isolation sleeve 7, the first isolation strip 8 and the second isolation strip 9, the first filling chamber 11 and the second filling chamber 12 formed between the first isolation strip 8 and the second isolation strip 9 and the first flame retardant layer 6 and the second flame retardant layer 10 when in use can make the internal flame retardant particles 13 evenly distributed, ensuring that the fire resistance of the cable at different parts is more balanced. By setting the first flame retardant layer 6 and the second flame retardant layer 10, the multi-layer flame retardant layer can further improve the flame retardant performance of the entire cable, thereby achieving the effect of preventing the flame retardant particles 13 from falling off when the flame burns to the flame retardant particles 13, causing the entire cable to lose its flame retardant performance;

[0026] like Figure 2 and Figure 3 As shown, the surface of the wire 3 is wrapped with a second insulating layer 14, the surface of the second flame retardant layer 10 is wrapped with a second steel mesh layer 15, the surface of the second steel mesh layer 15 is wrapped with a waterproof layer 16, the surface of the waterproof layer 16 is wrapped with a corrosion-resistant layer 17, the surface of the corrosion-resistant layer 17 is wrapped with a first wear-resistant layer 18, and the surface of the first wear-resistant layer 18 is wrapped with a second wear-resistant layer 19;

[0027] In this embodiment, by setting the second insulating layer 14, the loss of current passing through the wire 3 can be reduced during use, thereby achieving the effect of energy saving. By setting the second steel mesh layer 15, it cooperates with the first steel mesh layer 5 during use, thereby achieving the effect of further improving the compression resistance of the overall cable. By setting the waterproof layer 16 and the corrosion-resistant layer 17, the overall cable can be prevented from being corroded and penetrated by chemical substances during use, thereby achieving the effect of improving the service life of the overall cable.

[0028] As shown in the figure, a first fixing rubber strip 20 is fixedly provided at the connection between the first isolation strip 8 and the second flame retardant layer 10, a second fixing rubber strip 21 is fixedly provided at the connection between the second isolation strip 9 and the first flame retardant layer 6, and a plurality of grooves 22 are provided on the inner surface of the connection groove 2, and the width of the groove 22 is slightly larger than the width of the conductor 3;

[0029] In the present embodiment, by providing the first wear-resistant layer 18 and the second wear-resistant layer 19, the wear resistance of the entire cable can be effectively improved during use, thereby achieving the effect of preventing the cable from being damaged due to friction during installation and use. By providing the first fixed rubber strip 20 and the second fixed rubber strip 21, the tightness between different isolation strips and the flame retardant layer can be increased during use, thereby achieving the effect of improving the stability of the overall cable structure. By providing the groove 22, the width of the groove 22 is slightly larger than the width of the conductor 3 during use, and the conductor 3 can be fixed inside the connecting groove 2, thereby achieving the effect of preventing the conductor 3 from loosening inside the connecting groove 2, and further improving the stability of the overall cable internal structure.

[0030] Working principle: through the setting of the support column 1 and the first steel mesh layer 5, different wires 3 are fixed in different connecting grooves 2 inside the support column 1 when in use, so that different wires 3 are isolated from each other to avoid mutual extrusion between different wires 3, and the support column 1 can also improve the stability of the internal structure of the entire cable, and then the first steel mesh layer 5 is wrapped on the surface of the first insulating layer 4 to increase the overall cable compression resistance, thereby achieving the effect of avoiding the direct installation of multiple wires 3 inside the cable to squeeze each other and cause performance degradation. At the same time, through the setting of the isolation sleeve 7, the first isolation strip 8 and the second isolation strip 9, the first filling chamber 11 and the second filling chamber 12 formed between the first isolation strip 8 and the second isolation strip 9 and the first flame retardant layer 6 and the second flame retardant layer 10 when in use can make the internal flame retardant particles 13 evenly distributed, ensuring that the fire resistance of the cable in different parts is more balanced. Through the setting of the first flame retardant layer 6 and the second flame retardant layer 10, the multi-layer flame retardant layer can further improve the flame retardant performance of the entire cable, thereby achieving the effect of avoiding the flame retardant particles 13 from falling off when the flame burns to the flame retardant particles 13, causing the entire cable to lose its flame retardant performance. By setting the second insulating layer 14, the loss of current passing through the conductor 3 can be reduced during use, thereby achieving the effect of energy saving. By setting the second steel mesh layer 15, the first steel mesh layer 5 can be used in combination with the second steel mesh layer 15 to further improve the overall cable pressure resistance. By setting the waterproof layer 16 and the corrosion-resistant layer 17, the overall cable can be prevented from being corroded and penetrated by chemical substances during use, thereby achieving the effect of improving the service life of the overall cable. By setting the first wear-resistant layer 18 and the second wear-resistant layer 19, the wear resistance of the overall cable can be effectively improved during use, thereby achieving the effect of avoiding damage to the cable due to friction during installation and use. By setting the first fixed rubber strip 20 and the second fixed rubber strip 21, the tightness between different isolation strips and the flame retardant layer can be increased during use, thereby achieving the effect of improving the stability of the overall cable structure. By providing a groove 22, the width of the groove 22 is slightly larger than the width of the conductor 3 during use, and the conductor 3 can be fixed inside the connecting groove 2, thereby preventing the conductor 3 from loosening inside the connecting groove 2, and further improving the stability of the overall cable internal structure.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-smoke, halogen-free, environmentally friendly cable, characterized by: It comprises a support column (1), a plurality of connection grooves (2) are provided inside the support column (1), a wire (3) is fixedly arranged inside the connection groove (2), a first insulating layer (4) is wrapped on the surface of the support column (1), and a first steel mesh layer (5) is wrapped on the surface of the first insulating layer (4); The surface of the first steel mesh layer (5) is wrapped with a first flame retardant layer (6), the surface of the first flame retardant layer (6) is fixedly provided with an isolation sleeve (7), the outer surface of the isolation sleeve (7) is fixedly provided with a plurality of first isolation strips (8), the inner surface of the isolation sleeve (7) is fixedly provided with a plurality of second isolation strips (9), the surface of the isolation sleeve (7) is wrapped with a second flame retardant layer (10), a plurality of first filling chambers (11) are formed between the second flame retardant layer (10) and the first isolation strips (8), a plurality of second filling chambers (12) are formed between the first flame retardant layer (6) and the second isolation strips (9), and the first filling chambers (11) and the second filling chambers (12) are filled with a plurality of flame retardant particles (13).

2. The low-smoke, halogen-free, environmentally friendly cable according to claim 1, characterized in that: The surface of the conductive wire (3) is wrapped with a second insulating layer (14), and the surface of the second flame retardant layer (10) is wrapped with a second steel mesh layer (15).

3. The low-smoke, halogen-free, environmentally friendly cable according to claim 2, characterized in that: The surface of the second steel mesh layer (15) is wrapped with a waterproof layer (16), and the surface of the waterproof layer (16) is wrapped with a corrosion-resistant layer (17).

4. The low-smoke, halogen-free, environmentally friendly cable according to claim 3, characterized in that: The surface of the corrosion-resistant layer (17) is coated with a first wear-resistant layer (18), and the surface of the first wear-resistant layer (18) is coated with a second wear-resistant layer (19).

5. The low-smoke, halogen-free, environmentally friendly cable according to claim 1, characterized in that: A first fixing rubber strip (20) is fixedly provided at the connection between the first isolation strip (8) and the second flame retardant layer (10), and a second fixing rubber strip (21) is fixedly provided at the connection between the second isolation strip (9) and the first flame retardant layer (6).

6. The low-smoke, halogen-free, environmentally friendly cable according to claim 1, characterized in that: A plurality of grooves (22) are provided on the inner surface of the connection groove (2), and the width of the grooves (22) is greater than the width of the conductor (3).

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