Anti-breakdown cable and cable core protection structure

Abstract

The utility model relates to the technical field of cables, in particular to a breakdown-resistant cable and a cable core protection structure. The cable core protection structure comprises a cable group, the cable group comprises a first cable and a second cable, the first cable comprises a conductor, an inner interlayer wrapping the conductor and an outer interlayer wrapping the inner interlayer, and the second cable comprises the conductor and a third insulating layer extruded on the outer side of the conductor. According to the utility model, through the use of the multiple shielding layers and the semi-conductive layer, the cable is not easy to break down, and the cable does not contain halogen elements and is relatively environment-friendly.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a protection structure for puncture-resistant cables and cable cores. Background Technology

[0002] In variable frequency drive (VFD) power supply systems, cables frequently need to withstand instantaneous high voltage fluctuations, which can lead to cable breakdown and affect the normal operation of the equipment. Furthermore, the electromagnetic compatibility (EMC) performance of cables is crucial to ensure signal transmission quality and reduce electromagnetic interference. Traditional cables often fall short in these aspects, especially in terms of environmental performance; many materials release harmful substances when burned, causing environmental pollution. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] In view of the problems in the above or existing technologies, such as the cable being easily broken down when subjected to instantaneous high voltage and being susceptible to environmental interference, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a cable core protection structure. To solve the above-mentioned technical problems, this utility model provides the following technical solution: a cable assembly, including a first cable and a second cable, wherein the first cable includes a conductor, an inner partition layer surrounding the conductor, and an outer partition layer surrounding the inner partition layer, and the second cable includes the conductor and a third insulation layer extruded outside the conductor.

[0006] As a preferred embodiment of the cable core protection structure of this utility model, the inner partition layer includes, from the inside to the outside, a semiconducting strip wrapped around the outside of the conductor, a first insulating layer wrapped around the outside of the semiconducting strip, a semiconducting strip wrapped around the first insulating layer, and a first shielding layer wrapped around the outside of the semiconducting strip.

[0007] As a preferred embodiment of the cable core protection structure of this utility model, the outer partition layer includes a second insulating layer wrapped around the first shielding layer and a second shielding layer wound around the second insulating layer.

[0008] As a preferred embodiment of the cable core protection structure of this utility model, three of the first cable and three of the second cable are provided, and the second cables are symmetrical about each other with respect to the first cable.

[0009] In a preferred embodiment of the cable core protection structure of this utility model, the first cable and the second cable are arranged in a triangular pattern.

[0010] As a preferred embodiment of the cable core protection structure of this utility model, the conductor is made of several fine copper wires twisted together.

[0011] In a preferred embodiment of the cable core protection structure of this utility model, the materials of the first insulation layer and the second insulation layer are both cross-linked polyethylene.

[0012] As a preferred embodiment of the cable core protection structure of this utility model, the first shielding layer includes copper wire shielding and copper strip loose winding shielding, and the material of the second shielding layer is copper wire.

[0013] The beneficial effects of the cable core protection structure described in this utility model are as follows: By using multiple shielding layers and a semi-conductive layer, this utility model makes the cable less prone to breakdown, and the cable does not contain halogen elements, making it relatively environmentally friendly.

[0014] To solve the above-mentioned technical problems, this utility model also provides the following technical solution: a puncture-resistant cable including a cable core protection structure, and,

[0015] A protective layer, fixedly disposed on the outside of the cable assembly, includes a filler rope and a third shielding layer wrapped around the outside of the cable assembly, a non-woven fabric wrapped around the third shielding layer, and a sheath extruded over the non-woven fabric.

[0016] In a preferred embodiment of the anti-penetration cable of this utility model, the sheath is made of polyethylene.

[0017] The beneficial effects of the anti-puncture cable described in this utility model are: by using materials that meet environmental protection standards, the cable can reduce the emission of harmful substances even in the event of combustion. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of 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. Wherein:

[0019] Figure 1 A schematic diagram of the overall structure for a cable designed to withstand punctures.

[0020] Figure 2 for Figure 1 A magnified view of A in the middle.

[0021] Figure 3This is a schematic diagram of the second cable. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example 1

[0026] Reference Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a cable core protection structure that can make the cable less susceptible to puncture. It includes a cable assembly 100.

[0027] Specifically, the cable assembly 100 includes a first cable 101 and a second cable 102. The first cable 101 includes a conductor 101a, an inner partition 101b covering the conductor 101a, and an outer partition 101c covering the inner partition 101b. The second cable 102 includes a conductor 101a and a third insulation layer 102a extruded on the outside of the conductor 101a.

[0028] Furthermore, the inner partition 101b comprises, from the inside out, a semiconducting strip 101b-1 wrapped around the outside of the conductor 101a, a first insulating layer 101b-2 wrapped around the outside of the semiconducting strip 101b-1, a semiconducting strip 101b-1 wrapped around the first insulating layer 101b-2, and a first shielding layer 101b-3 wrapped around the outside of the semiconducting strip 101b-1. The two layers of semiconducting strips 101b-1 encapsulate the first insulating layer 101b-2, effectively homogenizing the magnetic and electric fields and preventing the first insulating layer 101b-2 from being broken down. The first insulating layer 101b-2 uses cross-linked polyethylene insulation material, enhancing the electrical safety of the entire cable. The first shielding layer 101b-3 includes copper wire shielding and copper strip loose-wrap shielding. First, copper wire is wound around the outside of the first insulating layer 101b-2, and then copper strip is wrapped around the outside of the copper wire to form a double-layer shield, which effectively reduces electromagnetic interference.

[0029] The outer layer 101c includes a second insulating layer 101c-1 wrapped around the first shielding layer 101b-3 and a second shielding layer 101c-2 wrapped around the second insulating layer 101c-1. A cross-linked polyethylene insulating material is extruded on the outside of the first shielding layer 101b-3 to form an insulating wire core. The second shielding layer 101c-2 is formed by braiding copper wire.

[0030] It should be noted that conductor 101a is made of fine copper wire stranded together, which enhances the flexibility of the cable.

[0031] It should be noted that the first cable 101 is the main line, and the second cable 102 is the ground line.

[0032] In use, first, a layer of semiconducting tape 101b-1 is wrapped around the outside of conductor 101a. Then, a layer of cross-linked polyethylene insulating material is extruded around the outside of semiconducting tape 101b-1 to form a first insulating layer 101b-2. Next, another layer of semiconducting tape 101b-1 is wrapped around the outside of the first insulating layer 101b-2. Then, copper wire is wound around the outside of semiconducting tape 101b-1 to form a first shielding layer 101b-3. Next, cross-linked polyethylene insulating material is extruded around the first shielding layer 101b-3. Finally, copper wire and copper tape are wound to form a second shielding layer 101c-2.

[0033] In summary, the design of multiple shielding layers and semi-conductive layers makes the cable less susceptible to breakdown and reduces electromagnetic interference.

[0034] Example 2

[0035] Reference Figure 1 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a protective layer 200 for the cable core protection structure, which solves the problem of the material being not environmentally friendly.

[0036] Specifically, the protective layer 200 is fixedly installed on the outside of the cable group 100, including a filler rope 201, a third shielding layer 202 wrapped around the outside of the cable group 100, a non-woven fabric 203 wrapped around the third shielding layer 202, and a sheath 204 extruded around the non-woven fabric 203.

[0037] Furthermore, the three first cables 101 and the three second cables 102 are twisted together to form a cable core, and a copper strip is wrapped around the cable core to form a third shielding layer 202, which shields the entire cable. Non-woven fabric 203 is wrapped around the outside of the copper strip to make the internal structure more compact, and polyethylene material is extruded on the outermost side to form a sheath 204.

[0038] The filler rope 201 is placed between the cable group 100 and the third shielding layer 202. The filler rope 201 makes the entire cable structure more stable.

[0039] The 204 sheath ensures that the cable can operate normally for a certain period of time during a fire, thus guaranteeing power supply in emergencies.

[0040] Preferably, the 204 sheath uses environmentally friendly PVC or halogen-free low-smoke materials as the insulation sheath material, which can reduce the emission of harmful substances even in the event of combustion, while ensuring that the cable can maintain good performance under the action of large mechanical forces.

[0041] Example 3

[0042] Reference Figure 1 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a cable assembly 100 and a protective layer 200.

[0043] Specifically, each insulated core has a coaxial cable structure. Three first cables 101 and three second cables 102 are provided, with each pair of second cables 102 symmetrically positioned relative to the first cables 101. The first cables 101 and second cables 102 are arranged in a triangular pattern. The three first cables 101 are arranged in a triangular, mutually touching position in the middle, while the other three second cables 102 are respectively positioned outside the touching points of the two first cables 101. The six cables are tightly twisted together to form the cable core.

[0044] Furthermore, the copper strip in the protective layer 200 can be used as a ground wire and also form a shielding layer to increase the cable's resistance to puncture.

[0045] The combined use of the first shielding layer 101b-3, the second shielding layer 101c-2, and the third shielding layer 202 enhances the cable's resistance to puncture, making it less susceptible to breakdown and ensuring the cable's safety.

[0046] It should be noted that the puncture-resistant cable does not contain halogen elements, making it relatively environmentally friendly.

[0047] In summary, the beneficial effects of this utility model are as follows:

[0048] 1. By designing the cable structure and adopting a multi-layer shielding design, the cable is less likely to be punctured, thus enhancing its resistance to puncture.

[0049] 2. By setting up a double-layer semiconductive layer to homogenize the magnetic and electric fields, insulation breakdown is prevented, and the impact of electromagnetic interference is reduced.

[0050] 3. The use of environmentally friendly materials reduces the emission of toxic substances and enhances environmental friendliness.

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0053] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cable core protection structure, characterized by: Comprising, The cable group (100) comprises a first cable (101) and a second cable (102), the first cable (101) comprises a conductor (101a), an inner separator (101b) wrapped outside the conductor (101a), and an outer separator (101c) wrapped outside the inner separator (101b), and the second cable (102) comprises the conductor (101a) and a third insulation layer (102a) wrapped outside the conductor (101a).

2. The cable core protection structure of claim 1, wherein: The inner separator (101b) comprises, from inside to outside, a semiconductive tape (101b-1) wrapped outside the conductor (101a), a first insulation layer (101b-2) wrapped outside the semiconductive tape (101b-1), a semiconductive tape (101b-1) wrapped outside the first insulation layer (101b-2), and a first shielding layer (101b-3) wrapped outside the semiconductive tape (101b-1).

3. The cable core protection structure of claim 2, wherein: The outer separator (101c) comprises a second insulation layer (101c-1) wrapped outside the first shielding layer (101b-3) and a second shielding layer (101c-2) wrapped outside the second insulation layer (101c-1).

4. The cable core protection structure of claim 3, wherein: The first cable (101) and the second cable (102) are provided in three, and the second cable (102) is symmetrical with respect to the first cable (101).

5. The cable core protection structure of claim 4, wherein: The first cable (101) and the second cable (102) are arranged in a triangular arrangement.

6. A cable core protection structure according to claim 4 or 5, characterised in that: The conductor (101a) is twisted by a plurality of fine copper wires.

7. The cable core protection structure of claim 6, wherein: The materials of the first insulation layer (101b-2) and the second insulation layer (101c-1) are cross-linked polyethylene.

8. The cable core protection structure of claim 7, wherein: The first shielding layer (101b-3) comprises a copper wire shielding layer and a copper tape shielding layer, and the material of the second shielding layer (101c-2) is copper wire.

9. An anti-puncture cable, characterized by: The cable core protection structure according to any one of claims 1-8, characterized in that: The protection layer (200) is fixedly arranged outside the cable group (100) and comprises a filler rope (201), a third shielding layer (202) wrapped outside the cable group (100), a non-woven fabric (203) wrapped outside the third shielding layer (202), and a sheath (204) wrapped outside the non-woven fabric (203).

10. The anti-puncture cable of claim 9, wherein: The material of the sheath (204) is polyethylene.

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