CN219349845U

CN219349845U - Anti-aging railway cable with flame retardant function

Info

Publication number: CN219349845U
Application number: CN202222062742.XU
Authority: CN
Inventors: 陆春风; 陆新; 陈洪华
Original assignee: Wujiang Tonghao Cable Co ltd
Current assignee: Wujiang Tonghao Cable Co ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2023-07-14
Anticipated expiration: 2032-08-08

Abstract

The utility model relates to an anti-aging railway cable with a flame-retardant function, which comprises an inner protective sleeve, wherein a flame-retardant component is arranged on the outer surface of the inner protective sleeve, an anti-aging component is arranged on the outer surface of the flame-retardant component, a plurality of guard plates are fixed on the inner wall of the inner protective sleeve, a cavity is formed between each guard plate and the inner protective sleeve, a cable core is arranged in the cavity, a bracket is fixed between the guard plates, and cable fillers are filled in the inner protective sleeve; the flame-retardant assembly comprises an inner flame-retardant layer fixed on the outer surface of the inner protective sleeve, an outer flame-retardant layer is arranged on the outer side of the inner flame-retardant layer, a filling layer is arranged between the inner flame-retardant layer and the outer flame-retardant layer, and a flame-retardant filler and a flame retardant are filled in the filling layer. This cable for ageing resistance railway with fire-retardant function through being provided with fire-retardant subassembly, fire-retardant subassembly is including interior fire-retardant layer, outer fire-retardant layer, filling layer, fire-retardant filler and fire retardant, cooperatees between a plurality of fire-retardant structures, can effectively improve the fire prevention flame retardant effect of this cable.

Description

Anti-aging railway cable with flame retardant function

Technical Field

The utility model relates to the technical field of railway cables, in particular to an anti-aging railway cable with a flame-retardant function.

Background

Railway cables, namely special wires applied to railway tracks, have more strict requirements on the railway cables along with the rapid development of railway track traffic, and the general specifications of the railway cables are as follows: 2-48 cores of plastic insulation and polyvinyl chloride outer sheath railway signal cables are used for automatic device systems; the polyethylene insulating comprehensive outer protective sleeve 4-61 core can transmit general automatic signals and audio signals such as frequency shift automatic blocking.

For example, china patent (publication No. CN 211957204U) discloses a corrosion-resistant cable for railway, which is characterized in that a copper mesh layer is adopted in a corrosion-resistant layer, a hollow glass bead is filled in an inner insulating layer in a single layer, a waterproof layer is a polyurethane waterproof layer with vent holes, and other means are combined, so that the corrosion resistance of the corrosion-resistant cable for railway is improved, but the corrosion-resistant cable for railway has the defect of poor flame retardance, and when the cable encounters special conditions such as fire, the cable is easy to burn, so that the cable cannot be normally used, and on the basis, the anti-aging cable for railway with the flame retardance is provided to solve the problems.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an anti-aging railway cable with a flame-retardant function, which has the advantages of better flame retardance and the like, and solves the problem of poor flame retardance of the existing railway cable.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an ageing resistance cable for railway with fire-retardant function, includes interior protective sheath, the surface of interior protective sheath is equipped with fire-retardant subassembly, the surface of fire-retardant subassembly is equipped with ageing resistance subassembly, the inner wall of interior protective sheath is fixed with a plurality of backplate, be formed with the cavity between backplate and the interior protective sheath, be equipped with the cable core in the cavity, a plurality of be fixed with the support between the backplate, the inside cable filler that fills of interior protective sheath;

the flame-retardant assembly comprises an inner flame-retardant layer fixed on the outer surface of the inner protective sleeve, an outer flame-retardant layer is arranged on the outer side of the inner flame-retardant layer, a filling layer is arranged between the inner flame-retardant layer and the outer flame-retardant layer, and a flame-retardant filler and a flame retardant are filled in the filling layer.

Further, the inner flame retardant layer is a glass fiber inner flame retardant layer, and the outer flame retardant layer is an asbestos outer flame retardant layer.

Further, the filler is flame-retardant polypropylene filler, and the flame retardant is halogen flame retardant.

Further, the support is a triangular support, and the guard plate is a semi-annular guard plate.

Further, the anti-aging assembly comprises a metal sleeve fixed on the outer surface of the outer flame-retardant layer, an anti-aging film is covered on the outer surface of the metal sleeve, an outer sleeve is fixed on the outer surface of the anti-aging film, and a corrosion-resistant coating is coated on the outer surface of the outer sleeve.

Further, the outer sleeve is a hydrogenated nitrile rubber outer sleeve, and the anti-aging film is a PVF film.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this cable for ageing resistance railway with fire-retardant function through being provided with fire-retardant subassembly, fire-retardant subassembly is including interior fire-retardant layer, outer fire-retardant layer, filling layer, fire-retardant filler and fire retardant, cooperatees between a plurality of fire-retardant structures, can effectively improve the fire prevention flame retardant effect of this cable.

2. This cable for ageing resistance railway with fire-retardant function, through being provided with ageing resistance subassembly, ageing resistance subassembly is provided with the skin of this cable, and including metal casing, ageing resistance film, overcoat and corrosion-resistant coating, corrosion-resistant ageing resistance effect is better, can effectively improve the life of this cable.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic structural view of a flame retardant assembly of the present utility model;

fig. 3 is a schematic view of the structure of the aging resistor assembly of the present utility model.

In the figure: 1 inner protective sleeve, 2 flame retardant components, 201 inner flame retardant layers, 202 outer flame retardant layers, 203 filling layers, 204 flame retardant fillers, 205 flame retardants, 3 anti-aging components, 301 metal sleeve, 302 anti-aging film, 303 outer sleeves, 304 corrosion resistant coating, 4 guard plates, 5 cavities, 6 cable cores, 7 brackets and 8 cable fillers.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, an anti-aging railway cable with a flame retardant function in this embodiment includes an inner protection sleeve 1, a flame retardant component 2 is disposed on an outer surface of the inner protection sleeve 1, an anti-aging component 3 is disposed on an outer surface of the flame retardant component 2, a plurality of guard plates 4 are fixed on an inner wall of the inner protection sleeve 1, the guard plates 4 are semi-annular guard plates, a cavity 5 is formed between the guard plates 4 and the inner protection sleeve 1, a cable core 6 is disposed in the cavity 5, a support 7 is fixed between the guard plates 4, the cable core 6 can be further protected, the support 7 is a triangular support, and cable fillers 8 are filled in the inner protection sleeve 1.

Referring to fig. 2, in order to improve the flame retardancy of the cable, the flame retardant assembly 2 in this embodiment includes an inner flame retardant layer 201 fixed on the outer surface of the inner protective jacket 1, an outer flame retardant layer 202 is disposed on the outer side of the inner flame retardant layer 201, a filling layer 203 is disposed between the inner flame retardant layer 201 and the outer flame retardant layer 202, and a flame retardant filler 204 and a flame retardant 205 are filled in the filling layer 203.

The glass fiber is an inorganic nonmetallic material with excellent performance, the glass fiber has the advantages of good insulativity, strong heat resistance, good corrosion resistance and high mechanical strength, the outer flame retardant layer 202 is an asbestos outer flame retardant layer, asbestos refers to silicate mineral products with high tensile strength, high flexibility, chemical resistance and thermal erosion resistance, electric insulation and spinnability, the asbestos is a general name of natural fibrous silicate mineral substances, the filler 204 is flame-retardant polypropylene filler, the flame-retardant polypropylene material can be classified into halogen-antimony system polypropylene, namely a gas-phase flame-retardant mechanism, polypropylene which is treated by bromine-containing alkyl phosphate is provided with a PBr synergistic effect, the flame-retardant effect is remarkable, meanwhile, the rheological property and the processing performance of PP can be improved, the influence on the physical mechanical performance of PP is small, the flame retardant 205 is a halogen flame retardant which is an important variety of organic flame retardant, and is an original flame retardant which is used at the earliest, and has low price, good stability, small addition amount and good compatibility with synthetic resin material, and can keep the flame retardant performance in the world and the maximum use amount of the flame retardant.

The flame retardant component 2 in the embodiment can effectively improve the fireproof flame retardant effect of the cable through the cooperation among the glass fiber inner flame retardant layer, the asbestos outer flame retardant layer, the flame retardant polypropylene filler and the halogen flame retardant.

Referring to fig. 3, in order to improve the aging resistance of the cable, the aging resistant module 3 of the present embodiment includes a metal sleeve 301 fixed to the outer surface of the outer flame retardant layer 202, the outer surface of the metal sleeve 301 is covered with an aging resistant film 302, the outer surface of the aging resistant film 302 is fixed with a jacket 303, and the outer surface of the jacket 303 is coated with a corrosion resistant coating 304.

Meanwhile, the outer sleeve 303 is a hydrogenated nitrile rubber outer sleeve, and the hydrogenated nitrile rubber has good oil resistance; and because of the highly saturated structure, the heat-resistant and corrosion-resistant composite material has good heat resistance, excellent chemical corrosion resistance, excellent ozone resistance and higher compression set resistance; meanwhile, the hydrogenated nitrile rubber has the characteristics of high strength, high tearing performance, excellent wear resistance and the like, is one of the rubbers with extremely excellent comprehensive performance, and the anti-aging film 302 is a PVF film, PVF brand name polyvinyl fluoride, is extruded by a copolymer of fluorine and fluorocarbon molecules, is a copolymer containing fluorine or fluorocarbon, and has larger chemical binding force and structural stability than any other polymers.

The anti-aging assembly 3 in this embodiment improves the aging resistance of the cable by the cooperation between the metal sleeve 301, the corrosion-resistant coating 304, the hydrogenated nitrile rubber jacket and the PVF film.

The working principle of the embodiment is as follows:

through being equipped with fire-retardant subassembly 2, fire-retardant subassembly 2 includes interior fire-retardant layer 201, outer fire-retardant layer 202, filling layer 203, fire-retardant filler 204 and fire retardant 205, when this cable runs into the conflagration, can avoid the conflagration to lead to the fact the damage to cable core 6 to ensure the normal work of cable, and be equipped with ageing resistance subassembly 3 at the skin of cable, ageing resistance subassembly 3 contains metal sleeve 301, ageing resistance film 302, overcoat 303 and corrosion-resistant coating 304, avoids the cable to appear ageing and corrosion phenomena after long-time, thereby effectively improves the life of this cable.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides an ageing resistance cable for railway with fire-retardant function, includes interior protective sheath (1), its characterized in that: the outer surface of the inner protective sleeve (1) is provided with a flame-retardant component (2), the outer surface of the flame-retardant component (2) is provided with an anti-aging component (3), the inner wall of the inner protective sleeve (1) is fixedly provided with a plurality of guard plates (4), a cavity (5) is formed between the guard plates (4) and the inner protective sleeve (1), a cable core (6) is arranged in the cavity (5), a plurality of supports (7) are fixed between the guard plates (4), and cable fillers (8) are filled in the inner protective sleeve (1);

the flame retardant assembly (2) comprises an inner flame retardant layer (201) fixed on the outer surface of the inner protective sleeve (1), an outer flame retardant layer (202) is arranged on the outer side of the inner flame retardant layer (201), a filling layer (203) is arranged between the inner flame retardant layer (201) and the outer flame retardant layer (202), and a flame retardant filler (204) and a flame retardant (205) are filled in the filling layer (203).

2. An anti-aging railway cable having a flame retardant function according to claim 1, characterized in that: the inner flame-retardant layer (201) is a glass fiber inner flame-retardant layer, and the outer flame-retardant layer (202) is an asbestos outer flame-retardant layer.

3. An anti-aging railway cable having a flame retardant function according to claim 1, characterized in that: the filler (204) is a flame retardant polypropylene filler, and the flame retardant (205) is a halogen flame retardant.

4. An anti-aging railway cable having a flame retardant function according to claim 1, characterized in that: the support (7) is a triangular support, and the guard board (4) is a semi-annular guard board.

5. An anti-aging railway cable having a flame retardant function according to claim 1, characterized in that: the anti-aging assembly (3) comprises a metal sleeve (301) fixed on the outer surface of the outer flame-retardant layer (202), an anti-aging film (302) is covered on the outer surface of the metal sleeve (301), a jacket (303) is fixed on the outer surface of the anti-aging film (302), and a corrosion-resistant coating (304) is coated on the outer surface of the jacket (303).

6. An anti-aging railway cable having a flame retardant function according to claim 5, wherein: the jacket (303) is a hydrogenated nitrile rubber jacket, and the anti-aging film (302) is a PVF film.