Pressure-resistant and tear-resistant rubber flame-retardant power cable

Abstract

The utility model discloses a pressure-resistant tear-resistant rubber flame-retardant power cable, which comprises a cable core, a first wire core is arranged in the middle of the inside of the cable core, a second wire core is arranged on the periphery of the outside of the first wire core, the first wire core and the second wire core are clamped, a composite insulation shielding layer is arranged outside the cable core, and the composite insulation shielding layer is arranged outside the cable core. The composite insulation shielding layer is composed of an inner insulation layer, an anti-interference layer and an outer insulation layer, the composite insulation shielding layer is wrapped by the composite flame-retardant layer, the composite flame-retardant layer is composed of a flame-retardant base material layer and a flame retardant layer, the composite flame-retardant layer is wrapped by the pressure-resistant and tear-resistant protective layer, and the flame-retardant base material layer is wrapped by the flame-retardant protective layer. The pressure-resistant and tear-resistant protective layer is composed of a pressure-resistant layer, a reinforcing layer and a wear-resistant outer layer. The problem that the pressure-resistant and tear-resistant effects of the power cable are poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cables, in particular to a pressure-resistant and tear-resistant rubber flame-retardant power cable. Background Art

[0002] Rubber power cable is a kind of wire and cable that uses rubber as the insulation layer and sheath. It is mainly made of rubber as the insulation material, and has the characteristics of wear resistance, crack resistance and aging resistance. It is widely used in various fields. It not only meets the requirements of insulation performance and physical and mechanical properties, but also has the characteristics of aging resistance and wear resistance. Some products even require oil resistance and flame retardancy. Therefore, rubber cables can bend freely, are not easy to bend and deform, and can withstand high temperature environments, will not melt or degrade, and can operate in high temperature environments. In addition, rubber cables are also highly corrosion-resistant, can prevent corrosion from acids, alkalis, greases, etc., have excellent oil resistance, and can withstand corrosion from various grease media.

[0003] For example, the Chinese authorized patent "A Silicone Rubber Cable" with announcement number CN218826270U includes a wire core and an outer sheath made of silicone rubber, and a silicone oil protective layer is integrally formed on the outer side of the outer sheath, and a stabilizing layer is also arranged on the outer side of the silicone oil protective layer. It has the effect of reducing adhesion between silicone rubber cables.

[0004] However, during transportation, installation and use, the cable may be affected by external mechanical forces, such as friction and pulling. At the same time, due to its material characteristics, rubber cables may be affected by aging, wear and other problems during use, reducing its service life and performance. Therefore, it does not meet existing needs. In this regard, we propose a pressure-resistant and tear-resistant rubber flame-retardant power cable. Utility Model Content

[0005] The utility model aims to provide a pressure-resistant and tear-resistant rubber flame-retardant power cable to solve the problem of poor pressure-resistant and tear-resistant effects of the power cable in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure-resistant and tear-resistant rubber flame-retardant power cable, comprising a cable core, a first wire core is arranged at the middle position inside the cable core, a second wire core is arranged around the outside of the first wire core, and the first wire core is engaged with the second wire core, a composite insulating shielding layer is arranged on the outside of the cable core, the composite insulating shielding layer consists of an inner insulating layer, an anti-interference layer and an outer insulating layer, the outside of the composite insulating shielding layer is wrapped with a composite flame-retardant layer, the composite flame-retardant layer consists of a flame-retardant base material layer and a flame retardant layer, the outside of the composite flame-retardant layer is wrapped with a pressure-resistant and tear-resistant protective layer, and the pressure-resistant and tear-resistant protective layer consists of a pressure-resistant layer, a reinforcement layer and a wear-resistant outer layer.

[0007] Preferably, the inner insulating layer is located at the innermost side of the composite insulating shielding layer, the anti-interference layer is wrapped around the outside of the inner insulating layer, the outer insulating layer is located outside the anti-interference layer, and the anti-interference layer and the outer insulating layer are extruded.

[0008] Preferably, the flame retardant substrate layer is located outside the composite insulating shielding layer, and the flame retardant substrate layer and the composite insulating shielding layer are extruded, and the flame retardant layer is coated on the outside of the flame retardant substrate layer.

[0009] Preferably, the wear-resistant outer layer is located at the outermost side of the pressure-resistant and tear-resistant protective layer, a pressure-resistant layer is arranged on the inner side of the wear-resistant outer layer, and a reinforcement layer is arranged between the wear-resistant outer layer and the pressure-resistant layer, and between the pressure-resistant layer and the composite flame-retardant layer.

[0010] Preferably, a wrapping tape is provided on the outside of the cable core, and the wrapping tape is wound and connected to the cable core.

[0011] Preferably, the first core and the second core are both composed of a tinned copper mesh, an insulating sleeve and a conductor, the conductor is located at the center and is formed by twisting multiple copper wires, the insulating sleeve is extruded and fixed to the outside of the conductor, and the tinned copper mesh is woven on the outside of the insulating sleeve.

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

[0013] 1. The multi-layer structure and high-strength material combination of the pressure-resistant and tear-resistant protective layer of the utility model enable the cable to resist external physical wear, mechanical impact and tearing force. The design of the pressure-resistant layer enables the cable to withstand higher external voltages without causing damage to its internal structure and performance. By providing strong physical protection, the pressure-resistant and tear-resistant protective layer can reduce the risk of damage to the cable in harsh environments.

[0014] 2. The utility model can quickly suppress the spread of flames when a fire occurs through the combined action of the flame-retardant base material and the flame retardant layer in the composite flame-retardant layer, reduce the burning speed of the cable and the expansion of the fire, and at the same time effectively reduce the amount of smoke generated by the cable in a fire, reduce the interference and harm of smoke to personnel evacuation, and improve the safety of the cable in a fire.

[0015] 3. The multi-layer structure design of the composite insulating shielding layer of the utility model significantly improves the insulation performance of the cable, can effectively prevent current leakage, and improve the safety of the cable. The existence of the shielding layer can greatly reduce electromagnetic interference and ensure the stable transmission of the internal signal of the cable. The composite insulating shielding layer not only has excellent insulation and shielding properties, but also can provide additional mechanical protection for the cable core, resist erosion and mechanical damage from the external environment, and adopts rubber materials with strong tear resistance, so that the cable can maintain stable performance in complex environments. 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 For the utility model Figure 2 A partial enlarged view of the middle A area;

[0019] Figure 4 This is a schematic diagram of the structure of the composite insulating shielding layer of the utility model;

[0020] Figure 5 This is a schematic diagram of the composite flame retardant layer structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the pressure-resistant and tear-resistant protective layer of the utility model.

[0022] In the figure: 1. cable core; 2. first core; 3. second core; 4. composite insulation shielding layer; 41. inner insulation layer; 42. anti-interference layer; 43. outer insulation layer; 5. composite flame retardant layer; 51. flame retardant substrate layer; 52. flame retardant layer; 6. pressure-resistant and tear-resistant protective layer; 61. pressure-resistant layer; 62. reinforcement layer; 63. wear-resistant outer layer; 7. wrapping tape; 8. tinned copper mesh; 9. insulating sleeve; 10. conductor. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-6 The utility model provides an embodiment: a pressure-resistant and tear-resistant rubber flame-retardant power cable, comprising a cable core 1, a first core 2 is arranged at the middle position inside the cable core 1, a second core 3 is arranged around the outside of the first core 2, and the first core 2 is engaged with the second core 3, a composite insulation shielding layer 4 is arranged outside the cable core 1, the composite insulation shielding layer 4 is composed of an inner insulation layer 41, an anti-interference layer 42 and an outer insulation layer 43, the outside of the composite insulation shielding layer 4 is wrapped with a composite flame-retardant layer 5, the composite flame-retardant layer 5 is composed of a flame-retardant base material layer 51 and a flame retardant layer 52, the outside of the composite flame-retardant layer 5 is wrapped with a pressure-resistant and tear-resistant protective layer 6, the pressure-resistant and tear-resistant protective layer 6 is composed of a pressure-resistant layer 61, a reinforcement layer 62 and a wear-resistant outer layer 63.

[0025] The main purpose of the composite insulating shielding layer 4 is to enhance the insulation performance of the cable, reduce electromagnetic interference, and provide certain mechanical protection. The composite flame retardant layer 5 provides excellent flame retardant performance and mechanical strength for the pressure-resistant and tear-resistant rubber flame retardant power cable through its unique composition structure and high-quality material selection, ensuring that the cable can operate safely and stably in various harsh environments. The pressure-resistant and tear-resistant protective layer 6 provides excellent physical protection and pressure resistance for the pressure-resistant and tear-resistant rubber flame retardant power cable through its unique multi-layer structure and high-quality material selection.

[0026] See also Figure 4 The inner insulating layer 41 is located at the innermost side of the composite insulating shielding layer 4, the anti-interference layer 42 is wrapped around the outside of the inner insulating layer 41, the outer insulating layer 43 is located outside the anti-interference layer 42, and the anti-interference layer 42 and the outer insulating layer 43 are extruded. The inner insulating layer 41 is silicone rubber, which further improves the insulation strength of the cable and prevents current leakage. The anti-interference layer 42 is aluminum foil, which reduces the interference of the electromagnetic field on the internal signal of the cable and ensures the stability of signal transmission while maintaining a certain flexibility and mechanical strength. The outer insulating layer 43 is ethylene propylene rubber, which not only further enhances the insulation effect, but also protects the shielding layer from mechanical damage and environmental erosion.

[0027] See also Figure 5 The flame retardant substrate layer 51 is located outside the composite insulating shielding layer 4, and the flame retardant substrate layer 51 and the composite insulating shielding layer 4 are extruded, and the flame retardant layer 52 is coated on the outside of the flame retardant substrate layer 51. The flame retardant substrate layer 51 is flame retardant chloroprene rubber, which has excellent flame retardant properties and mechanical strength. The flame retardant layer 52 is aluminum hydroxide, which can be effectively combined with the rubber material in the substrate layer, effectively suppress the spread of flames, and produce a smoke suppression effect when a fire occurs.

[0028] See also Figure 5 The wear-resistant outer layer 63 is located at the outermost side of the pressure-resistant and tear-resistant protective layer 6, and a pressure-resistant layer 61 is arranged on the inner side of the wear-resistant outer layer 63. A reinforcement layer 62 is arranged between the wear-resistant outer layer 63 and the pressure-resistant layer 61, and between the pressure-resistant layer 61 and the composite flame-retardant layer 5. The pressure-resistant layer 61 is a special rubber, which can effectively prevent the external voltage from interfering with and damaging the internal structure of the cable, ensuring the safe and stable operation of the cable under high-voltage environment. The reinforcement layer 62 is glass fiber, which not only enhances the mechanical strength of the cable, but also provides excellent tear resistance, so that the cable can withstand strong external tension or shear force. The wear-resistant outer layer 63 is polyurethane. As the first layer of the cable in direct contact with the external environment, it is made of a material with strong wear resistance. This layer can effectively resist external physical wear and mechanical impact, and protect the internal layer structure from damage.

[0029] See also Figure 2 A wrapping tape 7 is provided on the outside of the cable core 1 , and the wrapping tape 7 is wound and connected to the cable core 1 .

[0030] See also Figure 2 The first core 2 and the second core 3 are both composed of a tinned copper mesh 8, an insulating sleeve 9 and a conductor 10. The conductor 10 is located in the center and is formed by twisting multiple copper wires. The insulating sleeve 9 is extruded and fixed on the outside of the conductor 10, and the tinned copper mesh 8 is woven on the outside of the insulating sleeve 9. The cable core 1 combines high conductivity, excellent insulation performance, outstanding pressure resistance and tear resistance.

[0031] 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. A pressure-resistant and tear-resistant rubber flame-retardant power cable, comprising a cable core (1), characterized in that: A first wire core (2) is arranged at a middle position inside the cable core (1), and second wire cores (3) are arranged around the outside of the first wire core (2), and the first wire core (2) and the second wire core (3) are engaged with each other. A composite insulating shielding layer (4) is arranged outside the cable core (1), and the composite insulating shielding layer (4) is composed of an inner insulating layer (41), an anti-interference layer (42) and an outer insulating layer (43). The composite insulating shielding layer (4) is wrapped with a composite flame retardant layer (5) outside, and the composite flame retardant layer (5) is composed of a flame retardant base material layer (51) and a flame retardant layer (52). The composite flame retardant layer (5) is wrapped with a pressure-resistant and tear-resistant protective layer (6) outside, and the pressure-resistant and tear-resistant protective layer (6) is composed of a pressure-resistant layer (61), a reinforcement layer (62) and a wear-resistant outer layer (63).

2. The pressure-resistant and tear-resistant rubber flame-retardant power cable according to claim 1, characterized in that: The inner insulating layer (41) is located at the innermost side of the composite insulating shielding layer (4), the anti-interference layer (42) is wrapped around the outside of the inner insulating layer (41), the outer insulating layer (43) is located outside the anti-interference layer (42), and the anti-interference layer (42) and the outer insulating layer (43) are extruded.

3. The pressure-resistant and tear-resistant rubber flame-retardant power cable according to claim 1, characterized in that: The flame retardant substrate layer (51) is located outside the composite insulating shielding layer (4), and the flame retardant substrate layer (51) and the composite insulating shielding layer (4) are extruded and formed, and the flame retardant layer (52) is coated on the outside of the flame retardant substrate layer (51).

4. The pressure-resistant and tear-resistant rubber flame-retardant power cable according to claim 1, characterized in that: The wear-resistant outer layer (63) is located at the outermost side of the pressure-resistant and tear-resistant protective layer (6), a pressure-resistant layer (61) is arranged on the inner side of the wear-resistant outer layer (63), and a reinforcement layer (62) is arranged between the wear-resistant outer layer (63) and the pressure-resistant layer (61), and between the pressure-resistant layer (61) and the composite flame-retardant layer (5).

5. The pressure-resistant and tear-resistant rubber flame-retardant power cable according to claim 1, characterized in that: A wrapping tape (7) is provided on the outside of the cable core (1), and the wrapping tape (7) is wound and connected to the cable core (1).

6. The pressure-resistant and tear-resistant rubber flame-retardant power cable according to claim 1, characterized in that: The first wire core (2) and the second wire core (3) are both composed of a tinned copper mesh (8), an insulating sleeve (9) and a conductor (10); the conductor (10) is located at a central position and is formed by twisting a plurality of copper wires; the insulating sleeve (9) is extruded and fixed on the outside of the conductor (10); and the tinned copper mesh (8) is woven on the outside of the insulating sleeve (9).

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