Moisture-proof composite cable

Abstract

The utility model relates to cable technical field especially relates to a kind of moisture-proof composite cable. Including phase conductor, first insulating layer, first water-blocking layer are covered in proper order outside phase conductor, the outside surface of first water-blocking layer is distributed with several zero line conductors along its surface, and several zero line conductors form zero line conductor layer, second water-blocking layer, protective layer, moisture-proof layer, outer sheath, wear layer are covered in proper order outside zero line conductor layer;It further includes control line, the control line is distributed with the outside surface of first water-blocking layer, the control line includes conductor and second insulating layer, and second insulating layer is encircled in the conductor outside, and this cable solves the problem of traditional cable space waste, high construction cost and insufficient moisture-proof performance.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a moisture-proof composite cable. Background Technology

[0002] With the rapid development of urban construction, space resources in city centers are becoming increasingly scarce, and buildings and facilities are placing higher demands on cable laying. Traditional cables face two core problems in application: firstly, space and cost. Traditional methods require laying cables with different functions, such as power cables and control cables, separately, which not only increases laying difficulty and construction costs but also wastes limited space. Furthermore, ordinary 2-core power cables often use a structure of two insulated cores twisted side-by-side, filled, and sheathed, resulting in an excessively large cable outer diameter, making it difficult to lay in confined spaces. Secondly, their moisture resistance is insufficient. In harsh environments such as damp underground, underwater, and outdoor rain, traditional cables are prone to short circuits and leakage due to water ingress, affecting equipment operation and even causing safety accidents, failing to meet the requirements for use in high-humidity environments.

[0003] Therefore, there is an urgent need for a composite cable that integrates power and control functions and has high moisture resistance to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings in the existing technology and provide a moisture-proof composite cable to solve the problems of wasted space, high construction cost and insufficient moisture-proof performance of traditional cables.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A moisture-proof composite cable is provided, comprising a phase conductor, wherein the phase conductor is sequentially covered with a first insulation layer and a first water-blocking layer, and a plurality of neutral conductors are distributed along the outer surface of the first water-blocking layer, the plurality of neutral conductors forming a neutral conductor layer, and the neutral conductor layer is sequentially covered with a second water-blocking layer, a protective layer, a moisture-proof layer, an outer sheath, and a wear-resistant layer.

[0007] It also includes a control line, which is distributed on the outer surface of the first group of water layers along with the zero line. The control line includes a conductor and a second insulating layer, which surrounds the outside of the conductor.

[0008] In some embodiments, the phase conductor is a type 2 stranded round copper conductor.

[0009] In some embodiments, both the first insulating layer and the second insulating layer are cross-linked polyethylene insulating layers.

[0010] In some embodiments, both the first water-blocking layer and the second water-blocking layer include two 0.3mm double-sided insulating water-blocking tapes, with an overlap rate of 20% to 30% between the two double-sided insulating water-blocking tapes.

[0011] In some embodiments, the neutral conductor is a loosely wound structure of multiple bare copper wires.

[0012] In some embodiments, the protective layer is a polyethylene insulation material with a thickness of 1.0 mm.

[0013] In some embodiments, the moisture-proof layer is an aluminum-plastic composite strip with a thickness of 2 mm, and the composite strip has longitudinal ribs.

[0014] In some embodiments, the outer sheath is a flame-retardant polyethylene sheath layer with a thickness of 1.8 mm to 2.0 mm.

[0015] In some embodiments, the wear-resistant layer is a nylon sheath material with a thickness of 0.5 mm.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model provides a moisture-proof composite cable. By loosely winding the neutral conductor and the conductor with the second insulation layer together on the outside of the first water-blocking layer, the functions of power transmission and control signal transmission are combined into one cable. This replaces the traditional method of laying power and control cables separately or extruding insulation from the neutral and phase wires and then twisting them together. It realizes the integration of the neutral and control wire functions into one, significantly reducing the outer diameter of the cable, optimizing cable laying costs and space, meeting the needs of diverse scenarios, and significantly expanding the scope of application. It adopts a multi-layer moisture-proof protection design, setting up a first water-blocking layer and a second water-blocking layer for double water-blocking protection. The water-blocking tape expands when it comes into contact with water and can quickly form a water-blocking section to prevent moisture penetration. It also features longitudinal wrapping of aluminum-plastic composite tape, which is corrugated and completely bonded and sealed with the sheath layer by hot melt adhesive to form an all-round moisture barrier. At the same time, it combines the properties of cross-linked polyethylene, flame-retardant polyethylene, nylon and other materials to give the cable multiple functions such as insulation, flame retardancy, wear resistance, oil resistance, and rodent and termite prevention, improving service life and safety, and strengthening comprehensive protection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the moisture-proof composite cable according to an embodiment of the present invention.

[0019] 1. Phase conductor; 2. First insulation layer; 3. First water-blocking layer; 4. Neutral conductor; 5. Second water-blocking layer; 6. Protective layer; 7. Moisture-proof layer; 8. Outer sheath; 9. Wear-resistant layer; 201. Conductor; 202. Second insulation layer. Example

[0020] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0021] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0022] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Example

[0024] Please see Figure 1 The moisture-proof composite cable disclosed in this embodiment includes a phase conductor 2011, which is sequentially covered with a first insulation layer 2 and a first water-blocking layer 3. A plurality of neutral conductors 2014 are distributed along the outer surface of the first water-blocking layer 3, and the plurality of neutral conductors 2014 form a neutral conductor 2014 layer. The neutral conductor 2014 layer is sequentially covered with a second water-blocking layer 5, a protective layer 6, a moisture-proof layer 7, an outer sheath 8, and a wear-resistant layer 9.

[0025] The phase conductor 2011 is located at the very center of the wear-resistant layer 9. The phase conductor 2011 is surrounded by a first insulating layer 2, which surrounds the outer surface of the phase conductor 2011. A first water-blocking layer 3 is established around the first insulating layer 2. The neutral conductor 2014 is established around the first water-blocking layer 3. A second water-blocking layer 5 is established around the neutral conductor 2014. A protective layer 6 is established around the second water-blocking layer 5. A moisture-proof layer 7 is established around the protective layer 6. An outer sheath 8 is established around the moisture-proof layer 7. A wear-resistant layer 9 is established around the outer sheath 8.

[0026] It also includes a control line, which is distributed on the outer surface of the first water-blocking layer along with the neutral line. The control line includes a conductor 201 and a second insulating layer, which surrounds the conductor 201.

[0027] The conductor 201 in the control line is a solid copper conductor 201. The solid structure ensures the stability and good conductivity of the control signal transmission, ensuring that the control signal can be transmitted accurately and efficiently. The second insulation layer is extruded with a layer of cross-linked polyethylene insulation material. The cross-linked polyethylene insulation material has reliable insulation performance and can effectively isolate the control line conductor 201 from other structures, ensuring that the control signal transmission is not interfered with and guaranteeing the normal realization of the control function. Furthermore, multiple control lines are loosely wound around the outer layer of the first water-blocking strip of the phase line, integrating the power cable and the control cable into one. This embodiment replaces the traditional method of extruding insulation for the phase line conductor 2011 and the neutral line conductor 2014 separately and then twisting them together, realizing the integration of the neutral line and control line functions into one, and significantly reducing the outer diameter of the cable.

[0028] In this embodiment, the phase conductor 2011 is a type 2 stranded round copper conductor 201. Specifically, a type 2 stranded round copper conductor 201 is used. The stranded structure can improve the flexibility of the conductor 201 while ensuring good conductivity, making it easy for the cable to bend during laying and meeting the basic requirements of power transmission.

[0029] In this embodiment, both the first insulating layer 2 and the second insulating layer are cross-linked polyethylene insulating material layers.

[0030] Specifically, a layer of cross-linked polyethylene insulation material is extruded. Cross-linked polyethylene insulation material has excellent electrical insulation properties, which can effectively prevent current leakage, and also has good temperature resistance and chemical stability, which can ensure the safe and stable transmission of electricity.

[0031] In this embodiment, both the first water-blocking layer 3 and the second water-blocking layer include two 0.3mm double-sided insulating water-blocking tapes, and the overlap rate of the two double-sided insulating water-blocking tapes is 20% to 30%.

[0032] Specifically, two layers of 0.3mm double-sided insulating water-blocking tape are overlapped and wrapped, with an overlap rate of 20% to 30% for each layer. The double-sided insulating water-blocking tape has the characteristic of expanding when exposed to water. When water enters due to damage to the outer structure, it can quickly expand to form a water-blocking section, preventing further water penetration. The two layers are overlapped and the overlap rate is controlled, which can enhance the reliability and comprehensiveness of water blocking.

[0033] In this embodiment, the neutral conductor 2014 is a loosely wound structure of multiple bare copper wires.

[0034] Specifically, the use of a loosely wound structure with multiple bare copper wires allows the cable to be used directly as a neutral wire, effectively reducing its outer diameter. While providing conductivity, the loosely wound structure also makes the cable easier to lay in confined spaces, reducing construction difficulty.

[0035] In this embodiment, the protective layer 6 is a polyethylene insulation material with a thickness of 1.0 mm.

[0036] Specifically, a 1.0mm thick polyethylene insulation layer is extruded over the water-blocking layer as a protective layer 6. The polyethylene insulation material has good mechanical strength, providing physical protection for the internal water-blocking layer and conductor 201, while also possessing certain insulation properties, increasing the cable's safety.

[0037] In this embodiment, the moisture-proof layer 7 is an aluminum-plastic composite strip with a thickness of 2mm, and the composite strip has longitudinal ribs.

[0038] Specifically, a 2mm aluminum-plastic composite tape is longitudinally wrapped around the cable core. Before longitudinal wrapping, the aluminum-plastic composite tape is corrugated, and the joints are sealed with hot melt adhesive. The use of longitudinal wrapping with aluminum-plastic composite tape and corrugation treatment, followed by sealing the joints with hot melt adhesive, ensures the cable's bending performance, preventing damage from bending during laying and use. The joints of the aluminum-plastic composite tape are completely sealed with hot melt adhesive, making it virtually impermeable to moisture. Its water-tightness is hundreds or even thousands of times higher than that of polyethylene alone, significantly improving the cable's moisture-proof sealing effect.

[0039] In this embodiment, the outer sheath 8 is a flame-retardant polyethylene sheath material layer with a thickness of 1.8mm to 2.0mm.

[0040] Specifically, a layer of flame-retardant polyethylene sheath material with a thickness of 1.8mm-2.0mm is extruded. Polyethylene has excellent electrical properties, good mechanical strength and wear resistance, heat aging resistance, low temperature resistance and chemical resistance; flame-retardant properties improve the fire safety performance of the cable; and the cable's water tightness is further enhanced by complete bonding and sealing with hot melt adhesive and aluminum-plastic tape.

[0041] In this embodiment, the wear-resistant layer 9 is a nylon sheath material with a thickness of 0.5 mm.

[0042] Specifically, a 0.5mm thick nylon sheath is used. The nylon sheath gives the cable excellent oil and abrasion resistance, reducing damage caused by friction and contact with oil during use; it also has rodent and ant protection properties, extending the cable's service life.

[0043] The cable in this embodiment has a 30% smaller outer diameter than traditional structures of the same model and specification, making it easier to lay in narrow environments. It integrates power and control functions, reducing the need for laying multiple cables separately, thus lowering construction costs and space waste. Integrating two independent functions (power transmission and control signal transmission) meets diverse scenario needs, significantly expanding its applicability. A multi-layered water-blocking structure provides effective protection; the water-blocking tape expands upon contact with water to quickly form a water-blocking section, preventing moisture penetration. The aluminum-plastic composite tape and sheath layer are completely bonded and sealed with hot melt adhesive, improving water tightness by hundreds to thousands of times compared to single polyethylene, significantly reducing the risk of failure in humid environments. The optimized materials of the outer sheath 8 and wear-resistant layer 9 endow the cable with multiple properties such as oil resistance, wear resistance, rodent and insect resistance, and flame retardancy, improving service life and safety. Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components and steps described in these embodiments do not limit the scope of this utility model. It should also be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0045] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0046] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A moisture-proof composite cable, characterized in that, It includes a phase conductor, which is sequentially covered with a first insulating layer and a first water-blocking layer. A plurality of neutral conductors are distributed along the outer surface of the first water-blocking layer, and the plurality of neutral conductors form a neutral conductor layer. The neutral conductor layer is sequentially covered with a second water-blocking layer, a protective layer, a moisture-proof layer, an outer sheath, and a wear-resistant layer. It also includes a control line, which is distributed on the outer surface of the first group of water layers along with the zero line. The control line includes a conductor and a second insulating layer, which surrounds the outside of the conductor.

2. The moisture-proof composite cable according to claim 1, characterized in that, The phase conductor is a type 2 stranded round copper conductor.

3. The moisture-proof composite cable according to claim 1, characterized in that, Both the first and second insulating layers are cross-linked polyethylene insulating layers.

4. The moisture-proof composite cable according to claim 1, characterized in that, Both the first water-blocking layer and the second water layer consist of two 0.3mm double-sided insulating water-blocking tapes, with an overlap rate of 20% to 30% between the two layers.

5. The moisture-proof composite cable according to claim 1, characterized in that, The neutral conductor is a loosely wound structure of multiple bare copper wires.

6. The moisture-proof composite cable according to claim 1, characterized in that, The protective layer is a 1.0 mm thick polyethylene insulation material.

7. The moisture-proof composite cable according to claim 1, characterized in that, The moisture-proof layer is a 2mm thick aluminum-plastic composite strip, and the composite strip has longitudinal ribs.

8. The moisture-proof composite cable according to claim 1, characterized in that, The outer sheath is a flame-retardant polyethylene sheath layer with a thickness of 1.8mm to 2.0mm.

9. The moisture-proof composite cable according to claim 1, characterized in that, The wear-resistant layer is a 0.5mm thick nylon sheath material.

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