Anti-aging flame-retardant rubber cable

Abstract

The utility model discloses an anti-aging flame-retardant rubber cable, comprising a composite flame-retardant sheath layer, the composite flame-retardant sheath layer is composed of an external anti-aging layer, a middle enhancement layer and an inner flame-retardant layer, the composite anti-aging layer is arranged in the composite flame-retardant sheath layer, and the middle enhancement layer is arranged in the composite flame-retardant sheath layer. The composite anti-aging layer is composed of a reinforced wear-resistant layer, an anti-ultraviolet shielding layer and a basic anti-aging layer, a composite flame-retardant rubber insulating layer is arranged in the composite anti-aging layer, and the composite flame-retardant rubber insulating layer is composed of an anti-aging protective layer, a flame-retardant reinforced layer and a basic insulating layer; and a cable core is arranged in the composite flame-retardant rubber insulating layer, so that the problem of performance reduction caused by aging of the flame-retardant cable after long-time use is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber cables, in particular to an aging-resistant flame-retardant rubber cable. Background Art

[0002] Flame retardant rubber cable, as a special cable, has unique flame retardant properties. It is mainly made of rubber as the base material, and flame retardants and other auxiliary materials are added to improve its fire resistance. In the power, chemical, petroleum, coal mining and other industries, the safety performance of the cable is very important. Its flame retardant performance can effectively prevent the spread of fire and provide greater protection for rescue work and property safety. Flame retardant rubber cable, as a new type of cable product, has been widely used in many fields. It can not only improve the safety performance of the cable system and reduce the occurrence of fire accidents, but also reduce the economic losses caused by fire.

[0003] For example, the Chinese authorized patent "A flame-retardant rubber cable" with announcement number CN212380131U includes a conductor, the outer wall of the conductor is covered with an insulating layer, the outer wall of the rubber cable conductor is covered with a glass fiber insulation layer, the glass fiber has good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. The outer wall of the glass fiber layer is connected to the ceramic sleeve. The ceramic insulation has good flame retardant effect and is non-conductive, which can prevent the conductor from abnormally generating sparks and burning from the inside to the outside. The outermost layer of the cable is wrapped with a polytetrafluoroethylene layer. The polytetrafluoroethylene material has excellent non-toxic, insulating, high temperature resistant and non-flammable properties, which can prevent external fires from igniting the cable.

[0004] Although the above-mentioned prior art can improve the flame retardant performance of the cable, as time goes by, the components in the rubber material may gradually volatilize, resulting in molecular chain breakage, thereby causing aging. The metal part may also be affected by factors such as oxidation, resulting in performance degradation. Moreover, although environmental factors such as solar radiation, high temperature and low temperature will not directly change the structure of the cable material, they will affect the properties of additives such as auxiliaries, antioxidants and flexibilizers, causing them to gradually inactivate and accelerate the aging and degradation of the cable. Therefore, it does not meet the existing needs. In this regard, we propose an aging-resistant flame-retardant rubber cable. Utility Model Content

[0005] The utility model aims to provide an aging-resistant flame-retardant rubber cable to solve the problem that the flame-retardant cable proposed in the above background technology is prone to aging and performance degradation due to long-term use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aging-resistant flame-retardant rubber cable, comprising a composite flame-retardant sheath layer, the composite flame-retardant sheath layer consisting of an outer anti-aging layer, an intermediate reinforcement layer and an inner flame-retardant layer, a composite anti-aging layer is arranged inside the composite flame-retardant sheath layer, the composite anti-aging layer consists of a reinforced wear-resistant layer, an anti-ultraviolet shielding layer and a basic anti-aging layer, a composite flame-retardant rubber insulation layer is arranged inside the composite anti-aging layer, the composite flame-retardant rubber insulation layer consists of an aging-resistant protective layer, a flame-retardant reinforcement layer and a basic insulation layer, and a cable core is arranged inside the composite flame-retardant rubber insulation layer.

[0007] Preferably, the external anti-aging layer is located outside the middle reinforcement layer, and the external anti-aging layer and the middle reinforcement layer are extruded, and the middle reinforcement layer is located outside the inner flame retardant layer, and the middle reinforcement layer and the inner flame retardant layer are extruded.

[0008] Preferably, the enhanced wear-resistant layer is located outside the anti-UV shielding layer, and the enhanced wear-resistant layer and the anti-UV shielding layer are jointly extruded, and the anti-UV shielding layer is located outside the basic anti-aging layer, and the anti-UV shielding layer and the basic anti-aging layer are jointly extruded.

[0009] Preferably, the anti-aging protective layer is located outside the flame retardant reinforcement layer, and the anti-aging protective layer and the flame retardant reinforcement layer are in contact with each other, and the flame retardant reinforcement layer is located outside the basic insulating layer, and the flame retardant reinforcement layer and the basic insulating layer are in contact with each other.

[0010] Preferably, the cable core includes wire cores, and at least four wire cores are arranged, one of which is located in the middle of the cable core, and the other wire cores are distributed in a ring-shaped and equidistant manner outside the central wire core, and a reinforcing core is arranged between adjacent wire cores outside, and a filling layer is filled between the wire cores and the reinforcing cores.

[0011] Preferably, the wire core comprises a coating layer and a conductor, the conductor is formed by twisting a plurality of copper wires, and the coating layer is wrapped around the outside of the conductor.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a composite flame-retardant sheath layer, which is composed of an inner flame-retardant layer, an intermediate reinforcement layer and an outer anti-aging layer. The inner flame-retardant layer adopts a flame-retardant rubber material, which can effectively suppress the spread of flames, improve the flame-retardant properties of the cable, and reduce the risk of fire. The introduction of the intermediate reinforcement layer improves the mechanical strength of the cable, enhances the tensile and compression resistance of the cable, and makes the cable more durable. The outer anti-aging layer adopts weather-resistant rubber or a rubber material with an anti-aging agent added, which can effectively resist the erosion of the cable by environmental factors and extend the service life of the cable.

[0014] 2. The utility model is provided with a composite anti-aging layer, which is composed of a basic anti-aging layer, an anti-ultraviolet shielding layer and an enhanced wear-resistant layer. The rubber material and the anti-ultraviolet shielding layer with excellent aging resistance are adopted, which can significantly improve the aging resistance of the cable and extend the service life of the cable. The setting of the enhanced wear-resistant layer makes the cable more wear-resistant, and can resist scratches and mechanical wear from external objects, thereby maintaining the integrity of the cable. By enhancing the aging resistance and wear resistance of the cable, the composite anti-aging layer can reduce the risk of cable failure due to aging or wear, and improve the reliability and stability of the cable.

[0015] 3. The utility model is provided with a composite flame-retardant rubber insulation layer, which is composed of a basic insulation layer, a flame-retardant reinforcement layer and an aging-resistant protective layer. The rubber material with excellent flame-retardant properties is used, which can significantly improve the flame-retardant properties of the cable and reduce the risk of fire. The basic insulation layer adopts a rubber material with high insulation properties to ensure that the cable has good electrical insulation properties and reduce the occurrence of electrical failures. The setting of the aging-resistant protective layer enables the cable to resist the erosion of environmental factors such as ultraviolet rays and high temperatures, delays the aging process of the cable, and extends the service life of the cable. By combining flame-retardant and aging-resistant properties, the composite flame-retardant rubber insulation layer provides more comprehensive safety protection for the cable and reduces the safety risks caused by fire or aging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the composite flame-retardant sheath layer of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the composite anti-aging layer of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the composite flame-retardant rubber insulation layer of the utility model.

[0021] In the figure: 1. Composite flame retardant sheath layer; 11. External anti-aging layer; 12. Intermediate reinforcement layer; 13. Inner flame retardant layer; 2. Composite anti-aging layer; 21. Reinforced wear-resistant layer; 22. Anti-ultraviolet shielding layer; 23. Basic anti-aging layer; 3. Composite flame retardant rubber insulation layer; 31. Anti-aging protective layer; 32. Flame retardant reinforcement layer; 33. Basic insulation layer; 4. Cable core; 41. Filling layer; 42. Strengthening core; 5. Wire core; 51. Coating layer; 52. Conductor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-5 The utility model provides an embodiment: an aging-resistant flame-retardant rubber cable, comprising a composite flame-retardant sheath layer 1, the composite flame-retardant sheath layer 1 is composed of an outer anti-aging layer 11, an intermediate reinforcement layer 12 and an inner flame-retardant layer 13, a composite anti-aging layer 2 is arranged inside the composite flame-retardant sheath layer 1, the composite anti-aging layer 2 is composed of a reinforced wear-resistant layer 21, an anti-ultraviolet shielding layer 22 and a basic anti-aging layer 23, a composite flame-retardant rubber insulation layer 3 is arranged inside the composite anti-aging layer 2, the composite flame-retardant rubber insulation layer 3 is composed of an aging-resistant protective layer 31, a flame-retardant reinforcement layer 32 and a basic insulation layer 33, a cable core 4 is arranged inside the composite flame-retardant rubber insulation layer 3, the composite flame-retardant sheath layer 1 can effectively suppress the spread of flame and improve the flame-retardant performance of the cable, the composite anti-aging layer 2 has a rubber material with excellent aging resistance and an anti-ultraviolet shielding layer, can significantly improve the aging resistance of the cable, extend the service life of the cable, and the composite flame-retardant rubber insulation layer 3 can significantly improve the flame-retardant performance of the cable and reduce the risk of fire.

[0024] See also Figure 3 The outer anti-aging layer 11 is located outside the middle reinforcement layer 12, and the outer anti-aging layer 11 and the middle reinforcement layer 12 are extruded, the middle reinforcement layer 12 is located outside the inner flame retardant layer 13, and the middle reinforcement layer 12 and the inner flame retardant layer 13 are extruded, the outer anti-aging layer 11 is weather-resistant rubber, as the outermost layer of the composite flame retardant sheath layer, a rubber material with excellent aging resistance is used. It can resist the erosion of the cable by environmental factors such as ultraviolet rays, high temperature, and humidity, and extend the service life of the cable. The middle reinforcement layer 12 is glass fiber, which has the characteristics of high strength and high temperature resistance, improves the tensile and compression resistance of the sheath layer, and ensures that the cable can remain stable in complex environments. The inner flame retardant layer 13 is inorganic flame retardant rubber, which mainly undertakes the initial flame retardant function, can effectively inhibit the spread of flames, and provide basic safety protection for the cable.

[0025] See also Figure 4The reinforced wear-resistant layer 21 is located on the outside of the anti-ultraviolet shielding layer 22, and the reinforced wear-resistant layer 21 and the anti-ultraviolet shielding layer 22 are extruded together. The anti-ultraviolet shielding layer 22 is located on the outside of the basic anti-aging layer 23, and the anti-ultraviolet shielding layer 22 and the basic anti-aging layer 23 are extruded together. The reinforced wear-resistant layer 21 is nitrile rubber, which can effectively resist mechanical wear and scratches from external objects. The anti-ultraviolet shielding layer 22 is nano titanium dioxide, which can reflect or absorb ultraviolet rays to prevent ultraviolet rays from directly irradiating the cable surface, thereby slowing down the aging speed of the cable. The basic anti-aging layer 23 is fluororubber, as the core part of the composite anti-aging layer 2, this material can effectively resist the erosion of environmental factors such as ultraviolet rays, high temperature, and oxidation, and keep the physical and chemical properties of the cable stable.

[0026] See also Figure 5 The aging-resistant protective layer 31 is located on the outside of the flame-retardant reinforcement layer 32, and the aging-resistant protective layer 31 and the flame-retardant reinforcement layer 32 are in contact with each other. The flame-retardant reinforcement layer 32 is located on the outside of the basic insulating layer 33, and the flame-retardant reinforcement layer 32 is in contact with the basic insulating layer 33. The aging-resistant protective layer 31 is made of a rubber material with good weather resistance, and an anti-aging agent may be added to improve the cable's resistance to environmental factors such as ultraviolet rays and high temperatures, and to delay the aging process of the cable. The flame-retardant reinforcement layer 32 is made of ethylene-propylene rubber or a flame-retardant formula to effectively suppress the spread of flames when the cable encounters a fire source. The basic insulating layer 33 is made of ethylene-propylene rubber to ensure that the cable has good electrical insulation properties under normal working conditions.

[0027] See also Figure 2 The cable core 4 includes a wire core 5, and at least four wire cores 5 are arranged, one of which is located in the middle position of the cable core 4, and the other wire cores 5 are distributed in a ring-shaped and equidistant manner outside the central wire core 5, and a reinforcing core 42 is arranged between adjacent wire cores 5 outside, and a filling layer 41 is filled between the wire core 5 and the reinforcing core 42.

[0028] See also Figure 2 The wire core 5 includes a coating layer 51 and a conductor 52 . The conductor 52 is formed by twisting a plurality of copper wires, and the coating layer 51 is wrapped around the outside of the conductor 52 .

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An ageing-resistant flame-retardant rubber cable, comprising a composite flame-retardant sheath layer (1), characterized in that: The composite flame-retardant sheath layer (1) is composed of an outer anti-aging layer (11), an intermediate reinforcement layer (12) and an inner flame-retardant layer (13); a composite anti-aging layer (2) is arranged inside the composite flame-retardant sheath layer (1); the composite anti-aging layer (2) is composed of an enhanced wear-resistant layer (21), an anti-ultraviolet shielding layer (22) and a basic anti-aging layer (23); a composite flame-retardant rubber insulation layer (3) is arranged inside the composite anti-aging layer (2); the composite flame-retardant rubber insulation layer (3) is composed of an anti-aging protective layer (31), a flame-retardant reinforcement layer (32) and a basic insulation layer (33); a cable core (4) is arranged inside the composite flame-retardant rubber insulation layer (3); the outer anti-aging layer (11) is located outside the intermediate reinforcement layer (12), and the outer anti-aging layer (11) and the intermediate reinforcement layer (12) are connected to each other. Extrusion molding, the intermediate reinforcement layer (12) is located outside the inner flame retardant layer (13), and the intermediate reinforcement layer (12) and the inner flame retardant layer (13) are extruded; the reinforced wear-resistant layer (21) is located outside the anti-ultraviolet shielding layer (22), and the reinforced wear-resistant layer (21) and the anti-ultraviolet shielding layer (22) are co-extruded, the anti-ultraviolet shielding layer (22) is located outside the basic anti-aging layer (23), and the anti-ultraviolet shielding layer (22) and the basic anti-aging layer (23) are co-extruded; the anti-aging protective layer (31) is located outside the flame retardant reinforcement layer (32), and the anti-aging protective layer (31) and the flame retardant reinforcement layer (32) are bonded together, the flame retardant reinforcement layer (32) is located outside the basic insulating layer (33), and the flame retardant reinforcement layer (32) and the basic insulating layer (33) are bonded together.

2. The ageing-resistant flame-retardant rubber cable according to claim 1, characterized in that: The cable core (4) comprises a wire core (5), and at least four wire cores (5) are provided, one of the wire cores (5) is located at a middle position of the cable core (4), and the other wire cores (5) are distributed in an annular shape and at equal intervals outside the central wire core (5), and a reinforcing core (42) is provided between adjacent wire cores (5) outside, and a filling layer (41) is filled between the wire core (5) and the reinforcing core (42).

3. The ageing-resistant flame-retardant rubber cable according to claim 2, characterized in that: The wire core (5) comprises a coating layer (51) and a conductor (52); the conductor (52) is formed by twisting a plurality of copper wires, and the coating layer (51) is wrapped around the outside of the conductor (52).

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