High-flame-retardant copper wire shielding power cable
By using a composite structural design and arrangement, the flame retardancy and durability of the flame-retardant cable are improved, solving the problem of insufficient performance of existing cables under fire and external torsion, and achieving higher safety and durability.
Patent Information
- Application Number
- CN202423113689.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing flame-retardant cables are insufficient in terms of flame retardancy and durability, especially in fire situations where they are difficult to effectively prevent the spread of fire, and are easily twisted and worn by external forces during construction and use.
The cable employs a composite structure design consisting of two sets of copper wire cores, a flame-retardant insulation layer, a flame-retardant filling layer, a copper wire shielding braided layer, and a heat-resistant and flame-retardant outer layer. Combined with the loose winding arrangement of the intermediate load-bearing core and the outer steel wire layer, the cable's flame retardancy, bending resistance, and durability are enhanced.
It improves the overall flame retardancy, high temperature resistance, interference resistance, bending resistance and tensile strength of the cable, extends its service life, and enhances its safety and reliability in complex environments.
Smart Images
Figure CN223770860U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable application technology, specifically relating to high flame-retardant copper wire shielded power cables. Background Technology
[0002] Currently, with technological advancements and the practical needs of cables in various applications, higher requirements are being placed on the performance adaptability of cables. These requirements primarily manifest in aspects such as flame retardancy, high temperature resistance, interference resistance, bending resistance, abrasion resistance, and tensile strength.
[0003] Flame-retardant cables are cables that, under specified test conditions, when a sample is burned, and after the test fire source is removed, the flame spreads only within a limited area, and the remaining flames or embers self-extinguish within a limited time. Their fundamental characteristic is that while they may be damaged and rendered inoperable in a fire, they can prevent the spread of fire. In simpler terms, if an electrical wire catches fire, it can confine the combustion to a localized area, preventing it from spreading and protecting other equipment, thus avoiding greater damage.
[0004] Current flame-retardant cable structural designs still need improvement in terms of flame retardancy, high temperature resistance, interference resistance, bending resistance, wear resistance, and tensile strength, especially in terms of flame retardancy and durability.
[0005] Therefore, based on the above problems, this utility model provides a high flame-retardant copper wire shielded power cable. Utility Model Content
[0006] Purpose of the utility model: The purpose of this utility model is to provide a high flame-retardant copper wire shielded power cable, which has the characteristics of excellent flame retardancy, bending resistance and durability.
[0007] Technical solution: The high flame-retardant copper wire shielded power cable provided by this utility model includes two sets of copper wire cores, two sets of flame-retardant insulation layers, a flame-retardant filling layer, a copper wire shielding braided layer, and a heat-resistant and flame-retardant outer layer; the flame-retardant insulation layers are respectively disposed on the outer layer of the copper wire cores, the flame-retardant filling layer covers the flame-retardant insulation layer, the copper wire shielding braided layer is disposed on the outer layer of the flame-retardant filling layer, and the heat-resistant and flame-retardant outer layer is disposed on the outer layer of the copper wire shielding braided layer.
[0008] In this technical solution, the high flame-retardant copper wire shielded power cable also includes an intermediate carrier core located between the flame-retardant insulation layers; wherein, the intermediate carrier core includes, but is not limited to, a copper stranded wire carrier core.
[0009] In this technical solution, the high flame-retardant copper wire shielded power cable further includes an outer steel wire layer disposed outside the copper wire shielding braided layer; wherein, the outer steel wire layer is evenly distributed on the outer layer of the copper wire shielding braided layer in a loosely wound manner.
[0010] In this technical solution, the flame-retardant insulating layer includes, but is not limited to, cross-linked polyethylene; the flame-retardant filling layer includes, but is not limited to, mineral fillers, polystyrene foam, and silicone fillers; and the heat-resistant and flame-retardant outer layer includes, but is not limited to, polyethylene, cross-linked polyethylene, or cross-linked polyolefin.
[0011] In this technical solution, the mineral filler is one or a mixture of two or three of the following: high-temperature quartz sand, alumina, and magnesium oxide; the organosilicon filler is silicone rubber or acrylic rubber.
[0012] Compared with existing technologies, the advantages of this high flame-retardant copper wire shielded power cable are as follows: 1. The overall structural design has stronger flame-retardant, high-temperature resistance, anti-interference, bending, wear resistance and tensile strength than current flame-retardant cables, while its durability is conveniently and effectively improved and extended; 2. It also has good flexibility, which is suitable for use in situations where the cable is dragged during construction or use, or twisted under external forces, thus improving safety in its application scenarios. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of the high flame-retardant copper wire shielded power cable of this utility model;
[0015] The numbers in the diagram are as follows: 10-copper wire core, 11-flame retardant insulation layer, 12-flame retardant filling layer, 13-copper wire shielding braided layer, 14-outer steel wire layer, 15-heat resistant and flame retardant outer layer, 16-intermediate bearing core. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0017] In the description of this utility model, it should be noted that the terms "top," "bottom," "one side," "the other side," "front," "back," "middle part," "inner," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] Example 1
[0019] like Figure 1 The high flame-retardant copper wire shielded power cable shown includes two sets of copper wire cores 10, two sets of flame-retardant insulation layers 11, a flame-retardant filling layer 12, a copper wire shielding braided layer 13, and a heat-resistant and flame-retardant outer layer 15.
[0020] Flame-retardant insulation layers 11 are respectively disposed on the outer layer of copper wire core 10.
[0021] Flame-retardant filler layer 12 covers flame-retardant insulation layer 11.
[0022] The copper wire shielding braided layer 13 is disposed on the outer layer of the flame-retardant filling layer 12.
[0023] The heat-resistant and flame-retardant outer layer 15 is disposed on the outer layer of the copper wire shielding braided layer 13.
[0024] In the above structure, the flame-retardant insulation layer 11, the flame-retardant filling layer 12, and the heat-resistant flame-retardant outer layer 15 constitute a three-layer flame-retardant and fireproof design, which effectively enhances the flame-retardant properties of the overall cable structure and improves its safety in various usage scenarios.
[0025] Example 2
[0026] Based on Embodiment 1, the high flame-retardant copper wire shielded power cable also includes an intermediate carrier core 16 located between the flame-retardant insulation layers 11.
[0027] Among them, the intermediate bearing core 16 includes, but is not limited to, a copper stranded wire bearing core, which effectively enhances the cable's tensile strength and resistance to dragging during use.
[0028] Example 3
[0029] Based on Embodiment 1 or Embodiment 2, the high flame-retardant copper wire shielded power cable also includes an outer steel wire layer 14 disposed outside the copper wire shielding braided layer 13.
[0030] The outer steel wire layer 14 is evenly distributed on the outer layer of the copper wire shielding braid layer 13 in a loose winding manner, which effectively enhances the cable's flexibility and tensile strength, enabling the cable to achieve higher overall mechanical properties and extend its service life.
[0031] In addition, the preferred flame-retardant insulation layer 11 includes, but is not limited to, cross-linked polyethylene or thermoplastic elastomer TPE / TPR, which has good flame retardancy and bending performance, and also meets the requirements of good insulation protection function; the flame-retardant filler layer 12 includes, but is not limited to, mineral fillers, polystyrene foam (which has good flame retardant properties, as well as good heat insulation and shock absorption properties. In addition, polystyrene foam also has a certain degree of flexibility and viscosity, which can effectively fill the gaps around the conductor and form a protective film around the conductor, thereby further reducing the risk of fire), and silicone fillers, which have good flame retardant properties and can effectively prevent the occurrence of fire and reduce the impact of external fire on the cable; the heat-resistant and flame-retardant outer layer 15 includes, but is not limited to, polyethylene, cross-linked polyethylene, or cross-linked polyolefin, which has good weather resistance and insulation, ensuring that the cable has good durability.
[0032] Furthermore, the preferred mineral filler is one or a mixture of two or three of the following: high-temperature quartz sand, alumina, and magnesium oxide, which possesses excellent high-temperature resistance and flame-retardant properties. In wire and cable systems, the high density and chemical stability of the mineral filler can prevent the further spread of fire; the organosilicon filler, such as silicone rubber or acrylic rubber, can effectively prevent oxygen, air, and other oxidants from entering the interlayer containing conductive components, thereby mitigating the occurrence of fire.
[0033] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A high flame retardant copper wire shielded power cable, characterized by: It comprises two groups of copper wire core (10), two groups of flame-retardant insulation layer (11), flame-retardant filling layer (12), copper wire shielding braid layer (13) and heat-resistant flame-retardant outer layer (15); The flame-retardant insulation layer (11) is respectively arranged on the outer layer of the copper wire core (10), The flame-retardant filling layer (12) covers the flame-retardant insulation layer (11), The copper wire shielding braid layer (13) is arranged on the outer layer of the flame-retardant filling layer (12), The heat-resistant flame-retardant outer layer (15) is arranged on the outer layer of the copper wire shielding braid layer (13).
2. The high flame resistant copper wire shielded power cable of claim 1, wherein: The high flame-retardant copper wire shielding power cable further comprises an intermediate bearing core (16) between the flame-retardant insulation layers (11); The intermediate bearing core (16) comprises but is not limited to a copper stranded wire bearing core.
3. The high flame retardant copper wire shielded power cable according to claim 1 or 2, characterized in that: The high flame-retardant copper wire shielding power cable further comprises an outer steel wire layer (14) arranged on the outer layer of the copper wire shielding braid layer (13); The outer steel wire layer (14) is evenly distributed on the outer layer of the copper wire shielding braid layer (13) in a sparse winding manner.