Multi-core flexible cable for smart energy

Abstract

The utility model relates to the technical field of cables, in particular to a multi-core flexible cable for smart energy. The cable comprises an external protection layer, a shielding layer, an internal protection layer, a cable framework, control wire cores, reinforcing ribs, a central wire core and an external filling layer, the cable framework is integrally of a spiral structure and is arranged at the central axis position in the cable, the control wire cores and the reinforcing ribs are spirally distributed along the outer portion of the cable framework, and the central wire core is located at the axis position of the cable framework. And the outer filling layer is filled among the control wire cores, the reinforcing ribs and the cable framework. Through the above structure, the cable guarantees the good transmission performance, remarkably improves the overall tensile strength and compression resistance, effectively prevents the displacement, fracture and signal interference of the wire cores, and is suitable for the wiring demands of a control system in a complex environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission technical field more specifically relates to a kind of multi-core flexible cable for smart energy. BACKGROUND

[0002] With the continuous improvement of industrial automation level, various equipment and system put forward higher requirements on the performance of control cable. As an important carrier of signal transmission and control instruction, control cable is widely used in mechanical manufacturing, metallurgy, electric power, transportation and other fields. In these complex environments, the cable not only needs to have good electrical conductivity and signal transmission stability, but also needs to have certain mechanical strength, anti-interference ability and environmental resistance to ensure the stability and reliability of system operation.

[0003] The existing multi-core control cable usually adopts a multi-core cable structure arranged in parallel, and the cable cores are supported or separated by fillers. This structure can meet the use requirements in some light load or static applications, but in high-frequency vibration, frequent bending motion or high mechanical stress environment, the wire core is prone to displacement, wear and even breakage, affecting the service life and signal transmission quality. Especially in complex working conditions, such as robot cable drag chain, temporary wiring in the field, high-altitude operation equipment and other scenes, the cable structure of the prior art is difficult to balance flexibility, mechanical strength and long-term stability.

[0004] In addition, although some existing reinforced structure cables improve mechanical properties by adding steel wires, fiber reinforced materials and other means, the structure is usually complex and the manufacturing cost is high, and there are problems such as uneven distribution of reinforcing materials and deformation of the sheath, which further affect the use effect and safety performance of the cable.

[0005] Therefore, it is urgent to provide a multi-core control cable with reasonable structure, good reinforcing effect, high wiring stability and excellent mechanical and electrical properties to meet the needs in various complex use environments. SUMMARY

[0006] To solve the problems in the prior art, the utility model provides a multi-core control cable with reinforcing rib structure, which has compact structure, strong tensile property, good flexibility and shielding performance, and is suitable for use in high-strength working conditions.

[0007] To achieve the above purpose, the utility model provides a multi-core flexible cable for smart energy, which comprises:

[0008] An outer protective layer is wrapped around the outermost layer of the cable.

[0009] A shielding layer is arranged inside the outer protective layer.

[0010] an inner protective layer arranged inside the shielding layer;

[0011] a plurality of control wire cores for transmitting control signals;

[0012] a plurality of reinforcing ribs arranged alternately with the control wire cores for improving the tensile strength of the cable;

[0013] a cable framework in a spiral structure arranged between the control wire cores and the reinforcing ribs for supporting the overall structure of the cable;

[0014] a center wire core arranged at the center of the cable;

[0015] an outer filling layer arranged in the gap region between the control wire cores, the reinforcing ribs and the cable framework.

[0016] Preferably, the control wire cores and the reinforcing ribs are arranged in an outer spiral along the cable framework.

[0017] Preferably, the reinforcing ribs are in a strip structure extending along the axial direction of the cable and are made of high-strength high-molecular material.

[0018] Preferably, the cable framework is made of insulating material and is provided with a plurality of embedding grooves for embedding the control wire cores and the reinforcing ribs.

[0019] Preferably, the center wire core is in a multi-stranded twisted conductor structure.

[0020] Preferably, the shielding layer is a metal woven mesh or an aluminum foil composite layer.

[0021] According to the above technical solution, compared with the prior art, the cable has the following advantages:

[0022] (1) The cable framework is in a spiral structure, and the control wire cores and the reinforcing ribs are arranged in an outer spiral along the cable framework, so that the structure is more stable and the bending resistance is stronger;

[0023] (2) The reinforcing ribs are arranged to significantly improve the tensile and compressive resistance of the cable and prolong the service life;

[0024] (3) The center wire core improves the axial strength and the electrical conductivity of the cable;

[0025] (4) The outer filling layer enhances the compactness of the structure, improves the roundness and the buffering capacity, and prevents the cavity from deforming;

[0026] (5) The multi-layer protection structure makes the cable have good wear resistance, waterproofness and anti-electromagnetic interference performance, and is suitable for complex working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only part of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0028] Figure 1 It is a whole structure schematic view of the present application.

[0029] Figure 2 It is a structure section view of the present application.

[0030] 1-outer protective layer, 2-shielding layer, 3-internal protective layer, 4-reinforcing rib, 5-control line core, 6-cable framework, 7-central line core, 8-filling layer. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] EMBODIMENT

[0033] Referring to Figure 1 and Figure 2 , a multi-core flexible cable for smart energy includes an outer protective layer 1, a shielding layer 2, an internal protective layer 3, a reinforcing rib 4, a control line core 5, a cable framework 6, a central line core 7, and an outer filling layer 8.

[0034] The outer protective layer 1 is coated on the outermost layer of the cable, and is used to protect the internal structure of the cable from mechanical damage, chemical corrosion, and environmental aging. Preferably, the outer protective layer 1 is extruded from high-weather-resistant and high-flexible polyvinyl chloride (PVC) or cross-linked polyethylene (XLPE) material, and the thickness can be adjusted according to the use scene, and is usually 1.0-3.0 mm, with good wear resistance, waterproofness, and flame retardance.

[0035] The shielding layer 2 is arranged on the inner side of the outer protective layer 1, and mainly shields external electromagnetic interference (EMI) and prevents signal crosstalk between the control line cores 5, to ensure the stability and accuracy of the cable signal transmission. The shielding layer 2 can be a metal woven mesh structure, preferably woven with copper wire or tinned copper wire, and the weaving density is controlled to be more than 70%; or a composite wrapping structure of aluminum foil and polyester film is used to improve the shielding efficiency.

[0036] The inner protective layer 3 is arranged inside the shielding layer 2, is an inner insulation layer of the cable, and is used for further protecting the inner core from being extruded or abraded. The inner protective layer 3 is usually made of extruded polyethylene (PE) or ethylene-propylene rubber material, and has good heat resistance and insulation performance.

[0037] The control core 5 is a main conductor structure of the cable, is arranged on the outer spiral track of the cable framework 6, and is used for transmitting a control signal. Preferably, the control core 5 is a twisted structure of multiple copper wires, and is wrapped with an insulation layer. The insulation material can be selected from polyvinyl chloride (PVC), cross-linked polyethylene (XLPE) or low-smoke halogen-free material, depending on the use environment requirements.

[0038] The reinforcing rib 4 is arranged outside the cable framework 6 alternately with the control core 5, and mainly functions to enhance the tensile performance and compressive strength of the cable, and prevent structural deformation or fracture during laying, pulling and long-term operation. In the embodiment, the reinforcing rib 4 is a long strip structure, extends along the axial direction of the cable, and is preferably made of glass fiber reinforced composite material, aramid fiber or other high-strength high-molecular material, and has the characteristics of light weight and high strength.

[0039] The cable framework 6 is an important support structure of the utility model, has a spiral structure as a whole, is located in the middle of the cable, and is used for bearing and fixing the control core 5 and the reinforcing rib 4. Through the design of the spiral structure, the control core 5 and the reinforcing rib 4 are spirally distributed along the outer surface thereof, not only optimizing the utilization rate of the internal space, but also enhancing the flexibility and bending resistance of the cable. The cable framework 6 is preferably made of an insulation material with good toughness, such as modified polypropylene or high-density polyethylene, and has certain anti-deformation ability and heat resistance. A plurality of grooves or recesses can be arranged on the surface of the cable framework 6, so as to facilitate the positioning and arrangement of the control core 5 and the reinforcing rib 4.

[0040] The center core 7 is arranged at the axial position of the cable framework 6, is used as a structural support or an additional functional conductor, has a form of a plurality of twisted conductor bundles, and is wrapped with an insulation layer. The center core 7 can be used for additional power supply, electrical grounding or monitoring signal transmission.

[0041] The outer filling layer 8 is arranged between the control core 5, the reinforcing rib 4 and the cable framework 6, is used for filling the gaps between the structures, improves the roundness and tightness of the cable, and prevents the relative movement of the cores from causing structural damage or unstable signals. The outer filling layer 8 is preferably made of low-foaming polyethylene or a high-molecular elastomer material, which can provide good cushioning performance without affecting the flexibility and thermal stability of the cable.

[0042] In the embodiment, the number of control lines 5 is five, the number of reinforcing ribs 4 is five, which are alternately distributed in intervals and form a stable spiral layout through the cable skeleton 6. This structure effectively improves the internal mechanical properties of the cable and to some extent enhances the tensile strength and impact resistance of the structure.

[0043] The multi-core control cable is particularly suitable for scenes such as an automatic control system, high-end equipment, a tunnel, a subway or a wind power industry with high requirements for cable stability and strength, and has good electrical performance and anti-interference ability, and has significant improvement in structural stability, flexibility, fatigue resistance and the like.

[0044] The above description of disclosed embodiments enables those skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-core flexible cable for smart energy, characterized by, The application relates to a cable, which comprises: an outer protective layer (1) covering the outermost layer of the cable; a shielding layer (2) arranged on the inner side of the outer protective layer (1); an inner protective layer (3) arranged on the inner side of the shielding layer (2); a plurality of control wire cores (5) for transmitting control signals; a plurality of reinforcing ribs (4) arranged alternately with the control wire cores (5) and used for improving the tensile strength of the cable; a cable framework (6) in a spiral structure and located between the control wire cores (5) and the reinforcing ribs (4) and used for supporting the overall structure of the cable; a central wire core (7) located at the center of the cable; an outer filling layer (8) filled in the gap area between the control wire cores (5), the reinforcing ribs (4) and the cable framework (6).

2. The multi-core flexible power cable according to claim 1, wherein The control wire cores (5) and the reinforcing ribs (4) are distributed along the outer spiral of the cable framework (6). 3.The multi-core flexible cable for smart grid according to claim 1, wherein, The reinforcing ribs (4) are in a strip structure, extend along the axial direction of the cable and are made of high-strength high-molecular materials. 4.The multi-core flexible cable for smart grid according to claim 1, wherein, The cable framework (6) is made of insulating materials and is provided with a plurality of embedding grooves on the surface and used for embedding the control wire cores (5) and the reinforcing ribs (4). 5.The multi-core flexible cable for smart grid according to claim 1, wherein, The central wire core (7) is in a multi-stranded twisted conductor structure. 6.The multi-core flexible cable for smart grid according to claim 1, wherein, The shielding layer (2) is a metal woven mesh or an aluminum foil composite layer.

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