CN213935722U

CN213935722U - Cold-resistant anti-cracking flame-retardant cable sheath

Info

Publication number: CN213935722U
Application number: CN202120136026.4U
Authority: CN
Inventors: 杨东武
Original assignee: Qingdao Hongxin Plastic Granulation Co ltd
Current assignee: Qingdao Hongxin Plastic Granulation Co ltd
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2021-08-10
Anticipated expiration: 2031-01-19

Abstract

The utility model relates to the technical field of cable sheathing, and a cold-resistant anti-crack flame retardant cable sheathing is disclosed, the problem that the flame retardant effect of the current cable sheathing is poor, and the low temperature resistance of the cable sheathing is not good when the temperature is low is solved, which comprises a cable core, wherein the cable core is internally connected with a wire core, the wire core comprises a first insulating layer, a flame retardant coating, a first shielding layer and a conductor, the first insulating layer is internally connected with a flame retardant coating, and the flame retardant coating is internally connected with the first shielding layer; protect the cable conductor through the tensile rope, avoid leading to cable conductor fracture and damage when dragging, during the wrench movement cable conductor simultaneously, buffer layer and elastic block can form certain buffering partial pressure effect to the cable conductor, and the protection inside cable does not receive the damage.

Description

Cold-resistant anti-cracking flame-retardant cable sheath

Technical Field

The utility model belongs to the technical field of the cable sheath, specifically be a cold-resistant anti flame retarded cable sheath that splits.

Background

The cable sheath is the outermost layer of the cable, for example, VV is polyvinyl chloride insulation, the polyvinyl chloride sheath is called a protection tube, and the outside of the protection tube is penetrated by the polyvinyl chloride sheath.

The existing cable sheath has single function, the flame retardant effect of the cable sheath is poor, the cable can possibly generate spontaneous combustion, and meanwhile, the low temperature resistance of the cable sheath is poor when the temperature is low, so that the cable sheath is inconvenient to use in winter, and therefore, the cold-resistant anti-cracking flame retardant cable sheath needs to be designed.

Disclosure of Invention

To the above situation, for overcoming prior art's defect, the utility model provides a cold-resistant anti flame retarded cable sheath that splits has solved present cable sheath's flame retardant efficiency effectively relatively poor, the cable sheath is the not good problem of low temperature resistance when temperature is on the low side.

In order to achieve the above object, the utility model provides a following technical scheme: a cold-resistant anti-cracking flame-retardant cable sheath comprises a cable core, wherein the cable core is connected with a cable core, the cable core comprises a first insulating layer, a flame-retardant layer, a first shielding layer and a conductor, the first insulating layer is connected with a flame-retardant layer, the flame-retardant layer is connected with the first shielding layer, the conductor is connected with the first shielding layer, the middle part of the cable core is connected with a tensile rope, the cable core is connected with a water-blocking material, the tensile rope and the cable core are connected with water-blocking materials, the cable core is connected with an inner protective layer, the outer side of the inner protective layer is connected with a second insulating layer, the outer side of the second insulating layer is connected with a heat-insulating layer, the outer side of the heat-insulating layer is connected with a flame-retardant layer, the outer side of the flame-retardant layer is connected with a cold-resistant layer, the outer side of the cold-resistant layer is connected with a second shielding layer, the outer side of the second shielding layer is evenly connected with an elastic block, one end of the elastic block, which is far away from the second shielding layer, the two sides of the elastic block are connected with buffer layers, buffer layer one end is connected with the second shielding layer outside, and the buffer layer is kept away from second shielding layer one end and is connected with the outer protective layer inboard.

Preferably, the elastic blocks are arranged at the outer side of the second shielding layer in the circumferential direction.

Preferably, the number of the elastic blocks is eight, and the elastic blocks are made of insulating materials.

Preferably, the first insulating layer and the second insulating layer are both made of perfluoroethylene propylene.

Preferably, the cold-resistant layer is made of PVC.

Preferably, the first shielding layer and the second shielding layer are made of metallized paper.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses, through the setting of flame retardant coating, heat preservation and cold-resistant layer, reduce the damage of external low temperature to the cable inside earlier, the cable can carry out fire-retardant through flame retardant coating and flame retardant coating when meeting with the conflagration earlier, improved the fire-retardant effect of cable, also avoided the toxic gas that produces when the cable burns simultaneously, reduced the pollution to the environment;

(2) the setting through stretch-proofing rope, elastic block, outer protective layer and buffer layer, the stretch-proofing rope can be protected the cable conductor, avoids leading to cable conductor fracture and damage when dragging, and during the wrench movement cable conductor simultaneously, buffer layer and elastic block can form certain buffering partial pressure effect to the cable conductor, and protection inside cable does not receive the damage.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the wire core of the present invention;

in the figure: 1. a cable core; 2. a wire core; 21. a first insulating layer; 22. a refractory layer; 23. a first shielding layer; 24. a conductor; 3. a tensile strand; 4. a water blocking material; 5. an inner protective layer; 6. a second insulating layer; 7. a heat-insulating layer; 8. a fire barrier layer; 9. a cold-resistant layer; 10. a second shielding layer; 11. an elastic block; 12. an outer protective layer; 13. a buffer layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the first embodiment, as shown in fig. 1 and 2, the cable core 1 of the present invention comprises a cable core 1, a cable core 2 is connected inside the cable core 1, the cable core 2 comprises a first insulating layer 21, a fire-resistant layer 22, a first shielding layer 23 and a conductor 24, the fire-resistant layer 22 is connected inside the first insulating layer 21 and can protect the conductor 24, the first shielding layer 23 is connected inside the fire-resistant layer 22, the conductor 24 is connected inside the first shielding layer 23, a tensile cord 3 is connected in the middle of the inside of the cable core 1 and can prevent the cable from being easily damaged when the cable is pulled, water-blocking materials 4 are connected inside the cable core 1, the tensile cord 3 and the outside of the cable core 2 and can prevent the cable from being damaged, an inner protective layer 5 is connected outside the cable core 1, a second insulating layer 6 is connected outside the inner protective layer 5, a heat-insulating layer 7 is connected outside the second insulating layer 6, a fire-resistant layer 8 is connected outside the heat-insulating layer 7, can protect the cable conductor, prevent fires it, 8 outsides on flame retardant coating are connected with cold-

resistant layer

9, 9 outsides on cold-resistant layer are connected with second shielding layer 10, the 10 outside evenly connected with elastic block 11 on second shielding layer, elastic block 11 keeps away from second shielding layer 10 one end and is connected with outer protective layer 12, elastic block 11 both sides all are connected with buffer layer 13, buffer layer 13 one end is connected with the 10 outside of second shielding layer, can collide and protect it when wrench movement at the cable conductor, avoid damaging cable core 1, buffer layer 13 keeps away from second shielding layer 10 one end and is connected with outer protective layer 12 inboardly.

In the second embodiment, on the basis of the first embodiment, the elastic blocks 11 are arranged in the circumferential direction outside the second shielding layer 10 to protect the inside of the cable.

In the third embodiment, on the basis of the first embodiment, the number of the elastic blocks 11 is eight, and the elastic blocks 11 are made of an insulating material, so that the circumferential direction of the cable can be protected.

In the fourth embodiment, on the basis of the first embodiment, the first insulating layer 21 and the second insulating layer 6 are both made of perfluoroethylene propylene, so that the insulating effect is good.

Fifth, on the basis of the first embodiment, the cold-resistant layer 9 is made of PVC, so that the cable can be prevented from being damaged when the cable is used in winter.

Sixth, based on the first embodiment, the first shielding layer 23 and the second shielding layer 10 are made of a metalized paper material, and can have a better shielding property.

The working principle is as follows: when using, through tensile rope 3, elastic block 11 and buffer layer 13's setting, when the cable conductor is dragging, tensile rope 3 can protect the cable conductor, avoid leading to cable conductor fracture and damage when dragging, simultaneously during the wrench movement cable conductor, buffer layer 13 and elastic block 11 can form certain buffering partial pressure effect to the cable conductor, protect inside cable not receive the damage, heat preservation 7 and cold-resistant layer 9 can reduce the damage of external low temperature to the cable inside earlier when temperature is lower, through flame retardant coating 22 and flame retardant coating 8's setting, the cable can carry out fire-retardant through flame retardant coating 22 and flame retardant coating 8 when meeting with the conflagration earlier, the flame retardant efficiency of cable has been improved, through first insulating layer 21, second insulating layer 6, the setting of first shielding layer 23 and second shielding layer 10, can improve the insulation and the shielding effect of cable conductor.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cold-resistant anti-crack flame retarded cable sheath, includes cable core (1), its characterized in that: the cable core (1) is internally connected with a cable core (2), the cable core (2) comprises a first insulating layer (21), a fire-resistant layer (22), a first shielding layer (23) and a conductor (24), the first insulating layer (21) is internally connected with the fire-resistant layer (22), the fire-resistant layer (22) is internally connected with the first shielding layer (23), the conductor (24) is internally connected with the first shielding layer (23), the middle part of the interior of the cable core (1) is connected with a tensile rope (3), the interior of the cable core (1), the tensile rope (3) and the exterior of the cable core (2) are both connected with a water-blocking material (4), the exterior of the cable core (1) is connected with an inner protective layer (5), the exterior of the inner protective layer (5) is connected with a second insulating layer (6), the exterior of the second insulating layer (6) is connected with a cold-resistant layer (7), the exterior of the heat-resistant layer (7) is connected with a fire-resistant layer (8), the exterior of the fire-resistant layer (8) is connected with a cold-resistant layer (9), the outer side of the cold-resistant layer (9) is connected with a second shielding layer (10), the outer side of the second shielding layer (10) is uniformly connected with an elastic block (11), one end, far away from the second shielding layer (10), of the elastic block (11) is connected with an outer protective layer (12), both sides of the elastic block (11) are connected with a buffer layer (13), one end of the buffer layer (13) is connected with the outer side of the second shielding layer (10), and one end, far away from the second shielding layer (10), of the buffer layer (13) is connected with the inner side of the outer protective layer (12).

2. The cold-resistant anti-cracking flame-retardant cable sheath as claimed in claim 1, which is characterized in that: the elastic blocks (11) are arranged on the outer side of the second shielding layer (10) in the circumferential direction.

3. The cold-resistant anti-cracking flame-retardant cable sheath as claimed in claim 1, which is characterized in that: the number of the elastic blocks (11) is eight, and the elastic blocks (11) are made of insulating materials.

4. The cold-resistant anti-cracking flame-retardant cable sheath as claimed in claim 1, which is characterized in that: the first insulating layer (21) and the second insulating layer (6) are both made of perfluoroethylene propylene.

5. The cold-resistant anti-cracking flame-retardant cable sheath as claimed in claim 1, which is characterized in that: the cold-resistant layer (9) is made of PVC.

6. The cold-resistant anti-cracking flame-retardant cable sheath as claimed in claim 1, which is characterized in that: the first shielding layer (23) and the second shielding layer (10) are both made of metallized paper.