CN218768779U

CN218768779U - Cable with multiple protection

Info

Publication number: CN218768779U
Application number: CN202222564813.6U
Authority: CN
Inventors: 卢康宁; 程炎军
Original assignee: Anhui Mingfu Cable Co ltd
Current assignee: Anhui Mingfu Cable Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-03-28
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to a cable with multiple protection, including cable core and multiple protective structure, multiple protective structure wraps up in the periphery of cable core, multiple protective structure includes insulating protective layer, fire-retardant layer, armor and rubber protective layer, the outside of cable core is equipped with insulating protective layer, fire-retardant layer, armor and rubber protective layer from inside to outside in proper order, the independent fire-retardant chamber of a plurality of has been seted up in the fire-retardant layer, fire-retardant intracavity is filled into there is carbon dioxide gas. The utility model discloses a set up a plurality of independent fire-retardant chambeies in fire-retardant in situ, fire-retardant intracavity is filled into has carbon dioxide gas, when the inside high temperature that produces of cable or when taking place the spontaneous combustion, can make easily melt when the temperature reaches the melting point that easily melts and hinder the piece and take place to melt to make the carbon dioxide gas of fire-retardant intracavity spill over, carbon dioxide gas can make the cable inside isolated with the air, thereby in time play fire-retardant effect, avoid the cable burning to get up.

Description

Cable with multiple protection

Technical Field

The utility model relates to the technical field of cables, especially, relate to a cable with multiple protection.

Background

The main functions of the cable are to transmit electric energy and signals and realize electromagnetic conversion, the cable is used for transmitting electric power such as a power cable and an overhead line, the cable is used for transmitting signals such as a coaxial cable, and the cable is used for realizing electromagnetic conversion such as an enameled wire. Cables are typically made up of several wires or groups of wires, which are visible throughout life.

The technical scheme adopted by the cable based on the multiple protection structure with the existing Chinese patent publication number of CN108988248A is as follows: when the cable is connected with tools such as a clamp, the upper protective edge 65 and the lower protective edge 61 are firstly sleeved at appropriate positions on the outer wall of the connecting pipeline 41, then the right fastening rope 63 is rotated and the left fastening rope 64 is tightened, and simultaneously the lower protective edge 61 and the upper protective edge 65 are clamped with the connecting pipeline 41, after the installation is completed, the tools such as the clamp are fixed on the lower pressure resisting plate 62 and the upper pressure resisting plate 66, when the cable is used and needs to be buried, a plurality of fixing seats 51 are firstly sleeved on the outer wall of the connecting pipeline 41 through the supporting grooves 56 and then are placed in soil for burying, so that the gravity of the soil can be supported through the fixing seats 51 and play a role in protecting the cable, and when the cable is used, the moisture-proof and protection roles can be played through the placing cavities 52 and the protection layers 42.

However, the existing cable has the defect of poor flame retardance, because the cable is provided with an inner protective layer and an outer protective layer, when the temperature in the cable is higher, one or more protective layers can easily reach the ignition point to cause spontaneous combustion, or the cable can also cause spontaneous combustion due to short circuit, if the cable is not timely subjected to flame retardance, the whole cable can be burnt, and greater harm can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists provides a cable with multiple protection, and concrete technical scheme is as follows:

the utility model provides a cable with multiple protection, includes cable core and multiple protective structure, multiple protective structure wraps up in the periphery of cable core, multiple protective structure includes insulating protective layer, fire-retardant layer, armor and rubber protection layer, the outside of cable core is equipped with insulating protective layer, fire-retardant layer, armor and rubber protection layer from inside to outside in proper order, the fire-retardant chamber that a plurality of is independent has been seted up in the fire-retardant layer, fire-retardant intracavity is filled into there is carbon dioxide gas.

As an improvement of the technical scheme, the inner side of the flame-retardant cavity is provided with an exhaust hole, and an easily-melted resistance sheet is fixedly arranged in the exhaust hole.

As an improvement of the technical scheme, the easily-meltable resistance sheet is made of polyethylene material.

As an improvement of the technical scheme, a shielding protective layer is arranged between the insulating protective layer and the flame-retardant layer and is woven by copper-clad aluminum wires.

As an improvement of the technical scheme, a polypropylene reticular filling rope is filled between the insulating protective layer and the cable core.

The utility model has the advantages that:

the cable core is provided with the insulating protection layer, the shielding layer, the flame-retardant layer, the armor layer and the rubber protection layer in sequence from inside to outside, multiple protection can be carried out on the cable core, a plurality of independent flame-retardant cavities are further formed in the flame-retardant layer, carbon dioxide gas is filled in the flame-retardant cavities, when the cable is internally high-temperature or spontaneously ignites, the easy-to-melt resistance sheet can be melted when the temperature reaches the melting point of the easy-to-melt resistance sheet, so that the carbon dioxide gas in the flame-retardant cavities overflows, the carbon dioxide gas can isolate the interior of the cable from air, a flame-retardant effect is timely played, the cable is prevented from being burnt, and each flame-retardant cavity is independent, so that the flame-retardant cavity in the range can be damaged only when a certain section in the cable is high-temperature or spontaneously ignites, the flame-retardant cavities in other positions cannot be influenced, and waste is avoided.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

fig. 2 is a top sectional view of the partial structure of the present invention.

Reference numerals: 1-a cable core; 2-insulating protective layer; 3-a flame retardant layer; 301-a flame retardant cavity; 302-vent hole; 303-easily melting resistance sheet; 4-an armor layer; 5-a rubber protective layer; 6-shielding protective layer; 7-polypropylene reticular filling rope.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and fig. 2, fig. 1 is a front view of the overall structure of the present invention; fig. 2 is a top sectional view of the partial structure of the present invention.

A cable with multiple protection comprises a cable core 1 and a multiple protection structure.

As shown in fig. 1 and 2, fig. 1 is a front view of the overall structure of the present invention; fig. 2 is a top sectional view of the partial structure of the present invention.

Multiple protective structure wraps up in the periphery of cable core 1, and multiple protective structure includes insulating protective layer 2, fire-retardant layer 3, armor 4 and rubber protection layer 5, and the outside of cable core 1 is equipped with insulating protective layer 2, fire-retardant layer 3, armor 4 and rubber protection layer 5 from inside to outside in proper order.

Through being equipped with rubber protective layer 5 at the outmost of cable and can carrying out resistance to compression and tensile protection to the cable, and rubber protective layer 5 has certain elasticity and anti deformation effect, can make the cable can not take place deformation after buckling, armor 4 can prevent that the cable from being bitten by toy such as mouse when laying underground, can have fine suppression effect to low frequency interference again, fire-retardant effect can be played on fire-retardant layer 3, insulating protective layer 2 can play insulating protection's effect to cable core 1.

In order to enable the cable to have strong signal interference resistance, a shielding protective layer 6 is further arranged between the insulating protective layer 2 and the flame-retardant layer 3, and the shielding protective layer 6 is woven by copper-clad aluminum wires.

The polypropylene netted filling rope 7 is filled between the insulating protection layer 2 and the cable core 1, so that gaps between the insulating protection layer 2 and the cable core 1 can be reduced, the cable core 1 can have the characteristics of high temperature resistance and low temperature resistance, and the cable core 1 can be protected.

As shown in fig. 2, fig. 2 is a top sectional view of the partial structure of the present invention.

A plurality of independent flame-retardant cavities 301 are formed in the flame-retardant layer 3, carbon dioxide gas is filled in the flame-retardant cavities 301, exhaust holes 302 are formed in the inner sides of the flame-retardant cavities 301, and the exhaust holes 302 are internally fixedly provided with easy-to-melt resistance sheets 303.

Through having seted up a plurality of independent fire-retardant chambeies 301 in fire-retardant layer 3, it has carbon dioxide gas to fill in fire-retardant chamber 301, when the inside high temperature that produces of cable or when taking place the spontaneous combustion, can make easily melt and hinder piece 303 and take place to melt when the temperature reaches the melting point of easily melting and hinder piece 303, thereby make the carbon dioxide gas in fire-retardant chamber 301 spill over, carbon dioxide gas can make the inside and air isolated of cable, thereby in time play fire-retardant effect, avoid the cable burning, and because every fire-retardant chamber 301 is all independent, so only can destroy fire-retardant chamber 301 in that scope when the inside certain section of cable produces high temperature or spontaneous combustion, can not lead to the fact the influence to the fire-retardant chamber 301 at other positions, avoid causing the waste.

In order to ensure that the melting point of the easily-fusible resistance sheet 303 is within a range of a normal value which is not high or low, the easily-fusible resistance sheet 303 is made of polyethylene material, and the melting point is 100-120 ℃.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. A cable with multiple protections, comprising: the cable comprises a cable core (1) and a multiple protection structure, the multiple protection structure wraps the periphery of the cable core (1), the multiple protection structure comprises an insulating protection layer (2), a flame-retardant layer (3), an armor layer (4) and a rubber protection layer (5), the insulating protection layer (2), the flame-retardant layer (3), the armor layer (4) and the rubber protection layer (5) are sequentially arranged outside the cable core (1) from inside to outside, a plurality of independent flame-retardant cavities (301) are formed in the flame-retardant layer (3), and carbon dioxide gas is filled in the flame-retardant cavities (301).

2. The multi-shielded cable of claim 1, wherein: exhaust hole (302) have been seted up to fire-retardant chamber (301) inboard, just exhaust hole (302) internal fixation is equipped with easily melts and hinders piece (303).

3. A cable with multiple protections according to claim 2, wherein: the easily-meltable resistance sheet (303) is made of polyethylene material.

4. A multi-shielded cable according to claim 1, wherein: and a shielding protective layer (6) is arranged between the insulating protective layer (2) and the flame-retardant layer (3), and the shielding protective layer (6) is woven by copper-clad aluminum wires.

5. A multi-shielded cable according to claim 1, wherein: and a polypropylene reticular filling rope (7) is also filled between the insulating protective layer (2) and the cable core (1).