CN212967213U

CN212967213U - Anti-aging railway cable with flame-retardant function

Info

Publication number: CN212967213U
Application number: CN202021957116.1U
Authority: CN
Inventors: 邢军
Original assignee: Jinan Shengtong Power Cable Co ltd
Current assignee: Jinan Shengtong Power Cable Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2021-04-13
Anticipated expiration: 2030-09-09

Abstract

The utility model discloses an anti-aging railway cable with flame retardant function, which comprises a cable rubber sleeve, wherein a glass fiber reinforced layer, a waterproof layer and a high temperature resistant layer are arranged on one side from inside to outside in the inner cavity of the cable rubber sleeve, a plurality of groups of elliptical cavities are arranged in the inner cavity of the high temperature resistant layer, silica gel radiating fins penetrate through the circumference of the cable rubber sleeve, one end of the cable rubber sleeve extending into the inner cavity of the silica gel radiating fin cable rubber sleeve is communicated with the elliptical cavities, a reinforcing rib is arranged at the center of the inner cavity of the cable rubber sleeve, three elastic reinforcing rods are arranged between the outer side of the circumference of the reinforcing rib and the glass fiber reinforced layer, a cable installation cavity is enclosed between the three elastic reinforcing rods, the glass fiber reinforced layer and the reinforcing ribs, a protective pipe is arranged in the inner cavity of the cable installation cavity, and a cable core is arranged in the inner cavity of the protective pipe, meanwhile, the cable has better bending performance, is not easy to damage and crack, and prolongs the service life of the cable.

Description

Anti-aging railway cable with flame-retardant function

Technical Field

The utility model relates to the technical field of cables, specifically be a cable for ageing resistance railway that has fire-retardant function.

Background

The cable is generally a rope-like cable formed by twisting several or several groups of conductors (at least two in each group), each group of conductors being insulated from each other and often twisted around a center, the entire outer surface being covered with a highly insulating covering, the cable having characteristics of internal energization and external insulation, in particular for cables installed on railways, which are most often installed outdoors.

Railway cable's exposure is outdoor for a long time, can the manager be difficult to avoid blowing in the rain and shining, long-time sunshine shines the ageing that can accelerate cable sheath, especially under the condition of sunshine is shone by force at high temperature in summer, the cable reflects the fracture easily after insolateing, the cable of fracture has influenced normal use, greatly reduce the life of cable, and the condition that catches fire takes place easily under the high temperature environment, consequently, technical personnel in the field provide a cable for ageing resistance railway with fire-retardant function, in order to solve the problem that proposes in the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cable for ageing resistance railway that has fire-retardant function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cable for ageing resistance railway with fire-retardant function, includes the cable gum cover, the inner chamber of cable gum cover is provided with glass fiber reinforced plastic layer, waterproof layer and high temperature resistant layer by interior outside to one side, the inner chamber on high temperature resistant layer is provided with the oval cavity of array, it has the silica gel fin to run through on the cable gum cover circumference, and the one end that stretches into silica gel fin cable gum cover inner chamber is linked together with oval cavity, cable gum cover inner chamber center department sets up the strengthening rib, be provided with three elasticity stiffener between the circumference outside of strengthening rib and the glass fiber reinforced plastic layer, it is three enclose into a cable installation cavity between elasticity stiffener and the glass fiber reinforced plastic layer and the strengthening rib, the inner chamber of cable installation cavity is provided with the protecting tube, the inner chamber of protecting tube is provided with the cable core.

Preferably, the glass fiber reinforced layer is formed by weaving copper wires, and the copper wires have high toughness, so that the cable core can be protected, and the tensile property of the cable core is improved.

Preferably, the high-temperature resistant layer is made of a halogen-free flame retardant material, and black smoke and toxic gas are not generated when the halogen-free flame retardant material is combusted, so that the safety performance is improved, and the combustion of the cable can be blocked.

Preferably, the protective tube is oval-shaped, the both ends of protective tube one end lateral wall all are tangent with the elasticity stiffener, and it is big to be oval-shaped protective tube at the ascending deformation space of cable footpath, and is best to cable core protection effect, also can carry out spacing fixed to the protective tube simultaneously.

Preferably, the diameter size of the cable core is the same as the length of the short axis of the oval protective tube, and the circle centers of the cable core and the oval protective tube are at the same point, so that the cable core can be conveniently limited and fixed, and the possibility of cable core deviation is reduced.

Preferably, two adjacent contained angles between the elasticity stiffener are 120, and triangle-shaped has stability, and the elasticity stiffener can play the supporting role to the cable gum cover, also can separate the cable core simultaneously, has reduced the influence each other between the cable core.

Preferably, the gaps between the cable core and the protective tube and between the cable installation cavities of the protective tube are filled with flame-retardant filling layers, and the flame-retardant filling layers are made of polyolefin filling strips, so that the flame-retardant effect of the cable can be improved.

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

the utility model discloses a there is ageing resistance cable for railway of fire-retardant function plays the effect of blockking through the perpendicular incidence of high temperature resistant layer to the sun, also can reduce the possibility that the cable is natural, oval cavity and silica gel are accomodate the heat dissipation that the heat chip cooperation can enough play the cable in the high temperature resistant layer, the inside temperature of cable has been reduced, oval cavity also can improve the deformation degree of cable simultaneously, the cable expend with heat and contract with cold and the ageing possibility of fracture has been reduced, thereby the life of the cable that improves, fire-retardant filling layer further prevents to make cable core stable in structure because of the large tracts of land burning that circuit short circuit or external fire source lead to, further improvement the flame retardant efficiency of cable.

Two, the utility model discloses a there is fire-retardant function's ageing resistance cable for railway is through the contained angle between two adjacent elasticity stiffeners for 120, triangle-shaped has stability, the elasticity stiffener can play the supporting role to the cable gum cover, also can separate the cable core simultaneously, the influence each other between the cable core has been reduced, and form heat dissipation channel between cable core and the protecting tube, and receive extrusion or cable when crooked at the cable, protecting tube and heat dissipation channel can effectively protect the cable core, and it is big at the ascending deformation space of cable to be oval-shaped protecting tube, it is best to cable core protection effect.

Drawings

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

FIG. 2 is a front view of the cable rubber sleeve of the present invention;

in the figure, 1-cable rubber sleeve; 2-a glass fiber reinforcement layer; 3-waterproof layer; 4-high temperature resistant layer; 5-an elliptical cavity; 6-silica gel radiating fins; 7-an elastic reinforcement bar; 8-reinforcing ribs; 9-cable installation cavity; 10-a protective tube; 11-a cable core; 12-flame retardant filling layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1-2, an embodiment of the present invention is provided.

A cable with flame retardant function for anti-aging railways comprises a cable rubber sleeve 1, wherein a glass fiber reinforcing layer 2, a waterproof layer 3 and a high temperature resistant layer 4 are arranged on one side of the inner cavity of the cable rubber sleeve 1 from inside to outside, the high temperature resistant layer 4 is made of a halogen-free flame retardant material, when the halogen-free flame retardant material burns, black smoke and toxic gas are not generated, the safety performance is improved, and meanwhile, the combustion of the cable can be blocked, the glass fiber reinforcing layer 2 is woven by copper wires, the copper wires have strong toughness, so that a cable core 11 can be protected, the tensile property of the cable core 11 is improved, a plurality of groups of oval cavities 5 are arranged in the inner cavity of the high temperature resistant layer 4, silica gel radiating fins 6 penetrate through the circumference of the cable rubber sleeve 1, one end extending into the inner cavity of the cable rubber sleeve 1 of the silica gel radiating fins 6 is communicated with the oval cavities 5, and, three elastic reinforcing rods 7 are arranged between the outer side of the circumference of each reinforcing rib 8 and the glass fiber reinforcing layer 2, the included angle between every two adjacent elastic reinforcing rods 7 is 120 degrees, a triangle has stability, the elastic reinforcing rods 7 can play a role in supporting the cable rubber sleeve 1, meanwhile, cable cores 11 can be separated, the mutual influence between the cable cores 11 is reduced, a cable installation cavity 9 is formed by the three elastic reinforcing rods 7, the glass fiber reinforcing layer 2 and the reinforcing ribs 8 in a surrounding mode, a protection pipe 10 is arranged in the inner cavity of the cable installation cavity 9, a cable core 11 is arranged in the inner cavity of the protection pipe 10, the diameter size of each cable core 11 is the same as the length of the short axis of the oval protection pipe 10, the circle centers of the cable cores 11 and the oval protection pipe 10 are in the same point, therefore, the cable cores 11 can be conveniently limited and fixed, the possibility of deviation of the cable cores 11 is reduced, and, The gaps between the cable installation cavities 9 of the protective tubes 10 are filled with flame-retardant filling layers 12, and the flame-retardant filling layers 12 are made of polyolefin filling strips, so that the flame-retardant effect of the cable can be improved.

The working principle is as follows: when the cable is irradiated by sunlight for a long time, the high temperature resistant layer 4 bears the heat generated by the sunlight, the damage of the outdoor sunlight to the cable can be reduced, the deformation degree of the cable rubber sleeve 1 can be increased by the oval cavity 5, the cracking aging speed is reduced, the service life is prolonged, the temperature inside the cable is radiated to the outside by the silica gel radiating fin 6, the waterproof layer 3 is waterproof, the cable rubber sleeve 1 is tightly fixed by the glass fiber reinforcing layer 2, meanwhile, the glass fiber reinforcing layer 2 has strong toughness, the flexibility of the cable is increased, the included angle between two adjacent elastic reinforcing rods 7 is 120 degrees, the triangle has stability, the elastic reinforcing rods 7 can play a role in supporting the cable rubber sleeve 1, the cable core 11 can be separated, the mutual influence between the cable cores 11 is reduced, and a radiating channel is formed between the cable core 11 and the protective tube 10, when the cable is extruded or bent, the protection tube 10 and the heat dissipation channel can effectively protect the cable core, the deformation space of the oval protection tube 10 in the radial direction of the cable is large, the protection effect on the cable core 11 is optimal, and the flame-retardant filling layer 12 further plays a flame-retardant role.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a cable for ageing resistance railway that has fire-retardant function, includes cable gum cover (1), its characterized in that: the cable rubber sleeve is characterized in that a glass fiber reinforced layer (2), a waterproof layer (3) and a high temperature resistant layer (4) are arranged on one side of the inner cavity of the cable rubber sleeve (1) from inside to outside, a plurality of groups of elliptical cavities (5) are arranged in the inner cavity of the high temperature resistant layer (4), silica gel radiating fins (6) penetrate through the circumference of the cable rubber sleeve (1), one end, stretching into the silica gel radiating fins (6), of the inner cavity of the cable rubber sleeve (1) is communicated with the elliptical cavities (5), reinforcing ribs (8) are arranged at the center of the inner cavity of the cable rubber sleeve (1), three elastic reinforcing rods (7) are arranged between the outer side of the circumference of each reinforcing rib (8) and the glass fiber reinforced layer (2), a cable installation cavity (9) is formed by the three elastic reinforcing rods (7) and the glass fiber reinforced layer (2) and the reinforcing ribs (8), a protective pipe (10) is arranged in the, the inner cavity of the protective tube (10) is provided with a cable core (11).

2. The cable with a flame-retardant function for the anti-aging railway as claimed in claim 1, wherein: the glass fiber reinforced layer (2) is woven by copper wires.

3. The cable with a flame-retardant function for the anti-aging railway as claimed in claim 1, wherein: the high temperature resistant layer (4) is made of halogen-free flame retardant materials.

4. The cable with a flame-retardant function for the anti-aging railway as claimed in claim 1, wherein: the protective pipe (10) is in an oval shape, and two ends of the side wall of one end of the protective pipe (10) are tangent to the elastic reinforcing rod (7).

5. The cable with a flame-retardant function for the anti-aging railway as claimed in claim 1, wherein: the diameter size of the cable core (11) is the same as the length of the short axis of the oval protective tube (10), and the circle centers of the cable core (11) and the oval protective tube (10) are at the same point.

6. The cable with a flame-retardant function for the anti-aging railway as claimed in claim 1, wherein: the included angle between two adjacent elastic reinforcing rods (7) is 120 degrees.

7. The cable with a flame-retardant function for the anti-aging railway as claimed in claim 1, wherein: gaps between the cable core (11) and the protective pipe (10) and gaps between the protective pipe (10) and the cable installation cavity (9) are filled with flame-retardant filling layers (12), and the flame-retardant filling layers (12) are made of polyolefin filling strips.