Aluminum alloy core crosslinked polyethylene insulated flame-retardant power cable
By using aluminum alloy core cross-linked polyethylene insulated cable design in the cable, combining flame retardant winding layer, polypropylene insulating layer, compressive layer and interlocking armor, the flame retardant cable is solved in the prior art damage during external impact. The problem of this achieves efficient flame retardant and compressive resistance in complex environments.
Patent Information
- Application Number
- CN202323658298.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-29
AI Technical Summary
Existing flame retardant power cables are prone to breakage when subjected to external pressure or impact, losing the flame retardant effect, and cannot ensure the integrity of the flame retardant layer in complex environments.
Designed with aluminum alloy core cross-linked polyethylene insulated cable, including flame retardant winding layer, polypropylene insulating layer, compressive layer and interlocking armor. The compressive layer is ethylene-propylene rubber, and the interlocking armor is made of stainless steel to ensure resistance. Integrity and compressive resistance of the combustion layer.
In complex environments, the flame retardant effect and compressive resistance of the cable are improved, the integrity of the flame retardant layer is ensured, and the incidence of fire and the risk of electric shock of personnel is reduced.
Smart Images
Figure CN222319824U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power cables, in particular to an aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable. Background Art
[0002] The performance of polyethylene modified by cross-linking has been greatly improved, which not only significantly improves the comprehensive properties of polyethylene such as mechanical properties, environmental stress cracking resistance, chemical corrosion resistance, creep resistance and electrical properties, but also significantly improves the temperature resistance level. The heat resistance temperature of polyethylene can be increased from 70℃ to above 100℃, which is suitable for application in flame-retardant power cables.
[0003] The flame retardancy of cables is an important parameter of cable safety indicators. Power cables with high flame retardancy can reduce the incidence of fire and the risk of electric shock to personnel in the event of an accident. Existing flame retardant power cables are usually just a stack of flame retardant material layers, which are easily damaged when subjected to external pressure or impact, and lose their flame retardant effect. Summary of the invention
[0004] The utility model aims to provide an aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable, which has flame retardancy and compression resistance and can ensure the integrity of the flame-retardant layer when subjected to external impact.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable, comprising a cable core, a flame-retardant winding layer is arranged on the outside of the cable core, a polypropylene insulation layer is arranged on the outside of the flame-retardant winding layer, a pressure-resistant layer is arranged on the outside of the polypropylene insulation layer, the pressure-resistant layer is ethylene-propylene rubber, an interlocking armor is arranged on the outside of the pressure-resistant layer, and a sheath is arranged on the outside of the interlocking armor.
[0006] Optionally, three cable cores are provided and distributed in a regular triangle, and filling layers are provided on the outer sides of two adjacent cable cores. There are three filling layers, and the three filling layers and the three cable cores form a circle.
[0007] Optionally, the cable core comprises an aluminum alloy conductor, and a cross-linked polyethylene insulation layer is provided on the outer side of the aluminum alloy conductor.
[0008] Optionally, the filling layer includes a shaped filling piece, the shaped filling piece is a strip of polystyrene, an arc-shaped shielding piece is fixedly connected to the outer side of the shaped filling piece, and the arc-shaped shielding piece is semi-conductive modified polypropylene.
[0009] Optionally, the flame retardant wrapping layer is a flame retardant synthetic fiber fabric, and the flame retardant wrapping layer is bonded and fixed to the filling layer.
[0010] Optionally, the interlocking armor is made of stainless steel.
[0011] Optionally, the outer side of the pressure-resistant layer is tightly matched with the inner side of the interlocking armor.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] The utility model is provided with a flame retardant winding layer and a polypropylene insulation layer on the outer side of the cable core, which has a good flame retardant effect; an anti-compression layer is provided on the outer side of the polypropylene insulation layer and then an interlocking armor is wound thereon, the interlocking armor has a good anti-compression effect and can play an axial tensile resistance role to a certain extent; the anti-compression layer is ethylene propylene rubber with a certain elasticity, and when the interlocking armor is compressed and deformed, it can protect the flame retardant winding layer and the polypropylene insulation layer, ensure the integrity of the flame retardant layer, and improve the flame retardant effect of the utility model in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a schematic diagram of the transverse cross-sectional structure of the utility model.
[0017] In the figure: 1, sheath; 2, interlocking armor; 3, filling layer; 301, shaped filling piece; 302, arc shielding piece; 4, polypropylene insulation layer; 5, flame retardant winding layer; 6, pressure-resistant layer; 7, cable core; 701, aluminum alloy conductor; 702, cross-linked polyethylene insulation layer. DETAILED DESCRIPTION
[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0019] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0022] The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable provided by the embodiment of the utility model is now described. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable comprises a cable core 7, a flame-retardant winding layer 5 is arranged on the outside of the cable core 7, a polypropylene insulation layer 4 is arranged on the outside of the flame-retardant winding layer 5, a pressure-resistant layer 6 is arranged on the outside of the polypropylene insulation layer 4, the pressure-resistant layer 6 is ethylene-propylene rubber, an interlocking armor 2 is arranged on the outside of the pressure-resistant layer 6, and a sheath 1 is arranged on the outside of the interlocking armor 2.
[0023] The utility model provides an aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable. Compared with the prior art, a flame-retardant winding layer 5 and a polypropylene insulation layer 4 are arranged on the outer side of the cable core 7, which has a good flame-retardant effect; a compression-resistant layer 6 is arranged on the outer side of the polypropylene insulation layer 4 and then wound around an interlocking armor 2, and the interlocking armor 2 has a good compression-resistant effect and can play an axial tensile role to a certain extent; the compression-resistant layer 6 is ethylene-propylene rubber and has a certain elasticity. When the interlocking armor 2 is compressed and deformed, it can protect the flame-retardant winding layer 5 and the polypropylene insulation layer 4, ensure the integrity of the flame-retardant layer, and improve the flame-retardant effect of the utility model in complex environments.
[0024] In another embodiment of the present invention, please refer to Figure 1 and Figure 2 There are three cable cores 7 distributed in a regular triangle, and a filling layer 3 is arranged on the outer side of two adjacent cable cores 7. There are three filling layers 3, and the three filling layers 3 and the three cable cores 7 form a circle.
[0025] In another embodiment of the present invention, please refer to Figure 1 and Figure 2The cable core 7 includes an aluminum alloy conductor 701, and a cross-linked polyethylene insulation layer 702 is arranged on the outside of the aluminum alloy conductor 701. The cross-linked polyethylene insulation layer 702 has good high temperature resistance and flame retardant effect, and has a flame retardant effect from the inside to the outside.
[0026] In another embodiment of the present invention, please refer to Figure 1 and Figure 2 The filling layer 3 includes a shaped filling piece 301, which is a strip of polystyrene. An arc-shaped shielding piece 302 is fixedly connected to the outside of the shaped filling piece 301. The arc-shaped shielding piece 302 is semi-conductive modified polypropylene. The filling layer 3 has two functions: it can supplement the missing parts of the outer sides of two adjacent cable cores 7 so that they can form a circle and play a shielding role.
[0027] In another embodiment of the present invention, please refer to Figure 1 and Figure 2 The flame retardant wrapping layer 5 is a flame retardant synthetic fiber fabric, and the flame retardant wrapping layer 5 is bonded and fixed to the filling layer 3 so that it can be firmly bonded to the filling layer 3; the flame retardant wrapping layer 5 is also easy to produce. Before the polypropylene insulation layer 4 is formed, the internal structure needs to be kept intact. After the flame retardant wrapping layer 5 is coated with glue and wrapped, it can be ensured that the flame retardant wrapping layer 5, the filling layer 3 and the cable core 7 form an integrated structure.
[0028] In another embodiment of the present invention, please refer to Figure 1 and Figure 2 , the interlocking armor 2 is made of stainless steel.
[0029] In another embodiment of the present invention, please refer to Figure 1 and Figure 2 The outer side of the pressure-resistant layer 6 is closely matched with the inner side of the interlocking armor 2, and the interlocking armor 2 is tightly wound to squeeze the pressure-resistant layer 6 so that they fit closely and prevent slipping between each other.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable, comprising a cable core (7), characterized in that: The outer side of the cable core (7) is provided with a flame retardant winding layer (5), the outer side of the flame retardant winding layer (5) is provided with a polypropylene insulation layer (4), the outer side of the polypropylene insulation layer (4) is provided with a pressure-resistant layer (6), the pressure-resistant layer (6) is ethylene propylene rubber, the outer side of the pressure-resistant layer (6) is provided with an interlocking armor (2), and the outer side of the interlocking armor (2) is provided with a sheath (1).
2. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable according to claim 1, characterized in that: Three cable cores (7) are provided and distributed in an equilateral triangle. A filling layer (3) is provided on the outer side of two adjacent cable cores (7). There are three filling layers (3). The three filling layers (3) and the three cable cores (7) form a circle.
3. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable according to claim 2, characterized in that: The cable core (7) comprises an aluminum alloy conductor (701), and a cross-linked polyethylene insulation layer (702) is provided on the outer side of the aluminum alloy conductor (701).
4. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable according to claim 2, characterized in that: The filling layer (3) comprises a shaped filling piece (301), the shaped filling piece (301) is a strip of polystyrene, an arc-shaped shielding piece (302) is fixedly connected to the outer side of the shaped filling piece (301), and the arc-shaped shielding piece (302) is semi-conductive modified polypropylene.
5. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable according to claim 4, characterized in that: The flame-retardant wrapping layer (5) is a flame-retardant synthetic fiber fabric, and the flame-retardant wrapping layer (5) and the filling layer (3) are bonded and fixed.
6. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable according to claim 1, characterized in that: The interlocking armor (2) is made of stainless steel.
7. The aluminum alloy core cross-linked polyethylene insulated flame-retardant power cable according to claim 1, characterized in that: The outer side of the pressure-resistant layer (6) is tightly matched with the inner side of the interlocking armor (2).