Environment-resistant and overload-resistant cable
By setting up a multi-layered protective structure consisting of an inner sheath, a steel tape armor layer, and a sheath layer, combined with a cable core support and a 2mm spacing design, the durability and stability issues of the cable under harsh environments and overload conditions are solved, achieving long-term stable operation and safety of the cable.
Patent Information
- Application Number
- CN202422984516.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing cables are easily damaged in harsh environments. Their sheaths have poor weather resistance and are prone to aging, hardening, or cracking when exposed to the outdoors for extended periods. They are also prone to overheating or damage under overload conditions. An unreasonable cable core layout can lead to poor heat dissipation, potentially causing current interruptions or safety accidents.
The cable is designed with a three-layer protective structure consisting of an inner sheath, a steel tape armor layer, and a sheath layer. The cable cores are spaced at least 2 mm apart, and the stranded conductors are supported by a cable core bracket to ensure stable operation of the cable in complex environments.
This provides multiple layers of protection for the cable, ensuring normal and stable operation in complex environments, improving the cable's service life and safety, reducing heat buildup and electromagnetic instability, and lowering losses.
Smart Images
Figure CN223471429U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable technical field, concretely is a kind of environment-resistant overload cable. BACKGROUND
[0002] Cables are typically composed of one or more conductors and their insulating layers, and some also contain protective layers, shielding layers and other components. These conductors are carefully designed and assembled to ensure that electrical energy or signals can be efficiently and safely transmitted from one place to another.
[0003] Part of the cable in the prior art is easy to be damaged under harsh environmental conditions, the sheath layer has poor weather resistance, and is easy to age, harden or crack when exposed to outdoor environment for a long time, reducing the service life of the cable. Part of the cable is easy to overheat or damage under overload condition, leading to interruption of current transmission or occurrence of safety accidents, and the cable core layout is unreasonable, and the spacing between cable cores is too small, which is not conducive to heat dissipation. To overcome the shortcomings of the prior art, the utility model provides an environment-resistant overload cable to solve the above problems. SUMMARY
[0004] To overcome the shortcomings of the prior art, the utility model provides an environment-resistant overload cable, which realizes multiple protection of the cable, sets three-layer cable protection structures of inner protective layer, steel belt armoring layer and sheath layer, ensures that the cable can work normally and stably in complex environment, uses cable core support during cabling to ensure that the spacing between each group of cable core insulations is at least 2mm, so that the cable is more easily heat-dissipated when powered on, thereby achieving the purpose of overload resistance.
[0005] To achieve the above purposes, the utility model is implemented by the following technical solutions: an environment-resistant overload cable, comprising a sheath layer arranged at the outermost, a steel belt armoring layer arranged inside the sheath layer, an inner protective layer arranged inside the steel belt armoring layer, a wrapping layer arranged inside the inner protective layer, and a filler arranged inside the wrapping layer.
[0006] The inside of the filler is provided with a cable core support and a stranded conductor, and the cable core support is used to provide support for the stranded conductor.
[0007] An insulating layer is arranged outside the stranded conductor.
[0008] Preferably, a phase line identification ribbon is arranged on the insulating layer.
[0009] Preferably, the cable core support is arranged at the center position of the cable, and the stranded conductor, the insulating layer and the phase line identification ribbon form a cable core.
[0010] Preferably, the minimum spacing between multiple groups of cable cores is set to 2mm, which facilitates heat dissipation during use of the cable and also ensures stability of the electromagnetic field and reduction of loss during use.
[0011] Preferably, the outer diameter of the stranded conductor is set to 15-17mm.
[0012] Preferably, the thickness of the steel tape armor layer is set to 1-2mm.
[0013] Preferably, the thickness of the insulation layer is set to 1-2mm.
[0014] Preferably, the thickness of the sheath layer is set to 2-3mm.
[0015] The utility model discloses an environmental resistance overload cable, which has the following beneficial effects:
[0016] The environmental resistance overload cable realizes multiple protection of the cable, sets three-layer cable protection structures of the inner protective layer, the steel tape armor layer and the sheath layer, ensures that the cable can work normally and stably in a complex environment, adopts the cable core support when cabling, ensures that the distance between each group of cable core insulations is at least 2mm, so that the cable is easier to dissipate heat when electrified, and the purpose of resisting overload is achieved. DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.
[0018] Figure 1 It is the whole structure schematic diagram of the utility model.
[0019] In the drawing: 1, sheath layer, 2, steel tape armor layer, 3, inner protective layer, 4, wrapping layer, 5, filler, 6, cable core support, 7, insulation layer, 8, phase line identification color band, 9, stranded conductor. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments are some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0021] The embodiments of the present application provide an environmentally resistant and overload-resistant cable, addressing existing issues such as the vulnerability of some cables to damage in harsh environments, poor weather resistance of the sheath layer, and the tendency to age, harden, or crack when exposed to outdoor environments for extended periods, which reduces the cable's service life. Some cables are prone to overheating or damage under overload conditions, leading to current transmission interruptions or safety incidents, and problems such as unreasonable cable core layout and small spacing between cable cores, which hinder heat dissipation.
[0022] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.
[0023] The utility model discloses an environment-resistant and overload-resistant cable. Figure 1 As shown, it includes a sheath layer 1 provided as the outermost layer, a steel tape armor layer 2 provided inside the sheath layer 1, an inner sheath 3 provided inside the steel tape armor layer 2, a wrapping layer 4 provided inside the inner sheath 3, and a filler 5 provided inside the wrapping layer 4;
[0024] A cable core support 6 and a stranded conductor 9 are provided inside the filler 5. The cable core support 6 is used to provide support for the stranded conductor 9.
[0025] An insulating layer 7 is provided on the outside of the stranded conductor 9 .
[0026] The overall structure of the cable consists of an outer layer structure, an inner layer structure and a cable core structure. The outermost layer of the cable is the sheath layer 1, which serves as a protective barrier for the cable and can resist external physical damage and harsh environmental conditions.
[0027] The internal structure includes a steel tape armor layer 2, an inner protective layer 3, a wrapping layer 4 and a filler 5. The steel tape armor layer 2 is located inside the sheath layer 1, providing additional mechanical strength and protection to resist external pressure, impact and cutting.
[0028] The thickness of the steel tape armor layer 2 is set to 1-2 mm to ensure a balance between sufficient strength and weight;
[0029] The inner sheath 3 is located inside the steel tape armor layer 2 to provide further protection and support; the wrapping layer 4 is located inside the inner sheath 3 and enhances the structural stability and waterproof performance of the cable through wrapping;
[0030] The filler 5 is located inside the wrapping 4 and fills the voids inside the cable, providing additional protection and helping to maintain the circular cross-section of the cable.
[0031] A phase line identification color band 8 is provided on the insulating layer 7;
[0032] The cable core structure includes a cable core support 6, a stranded conductor 9, an insulation layer 7, and a phase identification color band 8. The cable core support 6 is located inside the filler 5 and is arranged at the center of the cable to support the stranded conductor 9, ensuring the structural stability and electrical conductivity of the cable.
[0033] The stranded conductor 9 is located around the cable core support 6 and is the conductive part of the cable. The outer diameter of the stranded conductor 9 is set to 15-17 mm, providing sufficient conductive cross-sectional area to ensure smooth transmission of current.
[0034] The insulation layer 7 covers the outside of the stranded conductor 9, providing electrical insulation to prevent current leakage and short circuits. The thickness of the insulation layer 7 is set to 1-2 mm, ensuring sufficient insulation performance and physical strength.
[0035] The cable core support 6 is arranged at the center of the cable, and the stranded conductor 9, insulation layer 7, and phase identification color band 8 form the cable core. The phase identification color band 8 is located on the insulation layer 7 and is used to identify different phase lines, facilitating installation and maintenance.
[0036] The minimum spacing between multiple cable cores is set to 2 mm, facilitating heat dissipation during cable use and ensuring stable electromagnetic fields and reduced losses during use.
[0037] The thickness of the sheath layer 1 is set to 2-3 mm, ensuring good physical protection and durability.
[0038] The environmental and overload-resistant cable, through the reinforced design of the steel tape armor layer 2 and the sheath layer 1, can withstand harsh environmental conditions and overload conditions, ensuring long-term stable operation of the cable.
[0039] In actual processing, the process flow is as follows:
[0040] Wire drawing → stranded tight pressing → insulation → cabling → extrusion of inner protection → armoring → sheathing;
[0041] Quality detection is required during production, and the detection process is as follows:
[0042] 1. Selection of raw materials: high-quality copper with a bright surface is used as the conductor material to avoid affecting the current-carrying capacity of the conductor and increasing the direct current resistance. The stranded conductor 9 adopts a tight pressing mode to reduce the resistance error of the stranded conductor caused by the error of the single wire. The wire drawing and stranded conductor 9 are all wrapped with a thin film outside the cable reel to prevent oxidation of the copper material and cause changes in resistance.
[0043] 2. Production of cable conductor connection points: the stranded conductor 9 only allows single wire joints and does not allow whole strand joints. Single wires are welded using a butt welding machine to ensure that the single wires are annealed well at the joint and will not cause the resistance to increase due to the joint. The stranded conductor 9 adopts a circular tight pressing mode.
[0044] 3. Production process control: adopt suitable copper rod processing technology, use drawing oil containing antioxidant, use antioxidant in annealing process, and shorten the heating process of copper wire as much as possible to reduce the oxidation degree of wire and cable copper conductor and avoid the phenomenon that too tight tension during stranding causes conductor thinning and affects resistance value.
[0045] 4. Detection sample processing: remove impurities on the conductor core before detection starts, and avoid the conductor core from fully contacting moisture and gas in the air as much as possible, so as to be oxidized to cause the resistivity to become larger.
[0046] 5. Resistance detection process: control the two measurement currents in a ratio of 1:1.41 to ensure the accuracy of the results, avoid large errors caused by too small current, and avoid the situation that too large current causes the resistance temperature to rise and thus affects the resistance size. In order to avoid the detection result fluctuation caused by the temperature change in the environment, the environmental temperature and humidity and even light and other conditions during the detection process should be controlled according to the actual requirements of the detection. After the environmental temperature is truly stable, measurement is carried out, and stability is maintained during the test process.
[0047] 6. Cabling process: during cabling, the cable core support 6 is placed in the center to ensure that the minimum distance between each core is 2mm. This makes it convenient to dissipate heat when the cable is used, and also ensures the stability of the electromagnetic field and reduces the loss during use.
[0048] It should be noted that, in the present document, relational terms such as first and second and the like can be 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
[0049] The basic principles and main features of the present application and the advantages of the present application have been shown and described. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. An environmentally resistant overload cable comprising an outermost arranged sheath layer (1), characterized in that, The inner part of the sheath layer (1) is provided with a steel belt armor layer (2), the inner part of the steel belt armor layer (2) is provided with an inner protective layer (3), the inner part of the inner protective layer (3) is provided with a wrapping layer (4), the inner part of the wrapping layer (4) is provided with a filler (5); The inner part of the filler (5) is provided with a cable core support (6) and a stranded conductor (9), the cable core support (6) is used to provide support for the stranded conductor (9); The outer side of the stranded conductor (9) is provided with an insulation layer (7).
2. An environmentally resistant, overload resistant cable according to claim 1, wherein, The insulation layer (7) is provided with a phase line identification color band (8).
3. An environmentally resistant, overload resistant cable according to claim 2, wherein, The cable core support (6) is arranged at the center position of the cable, and the stranded conductor (9), the insulation layer (7) and the phase line identification color band (8) form a cable core.
4. An environmentally resistant, overload resistant cable according to claim 3, wherein, The minimum spacing formed between the plurality of cable cores is set to 2mm.
5. The environmentally resistant, overload resistant cable of claim 1, wherein, The outer diameter of the stranded conductor (9) is set to 15-17mm.
6. An environmentally resistant, overload resistant cable according to claim 1, wherein, The thickness of the steel belt armor layer (2) is set to 1-2mm.
7. An environmentally resistant, overload resistant cable according to claim 1, wherein, The thickness of the insulation layer (7) is set to 1-2mm.
8. An environmentally resistant, overload cable according to claim 1, wherein, The thickness of the sheath layer (1) is set to 2-3mm.