Reinforced photoelectric integrated water-blocking cable

Abstract

The utility model discloses a reinforced photoelectric integrated water-blocking cable, which comprises a cable core, an inner sheath layer, a first water-blocking layer, a braid layer, a second water-blocking layer and an outer sheath layer which are sequentially arranged from inside to outside. The cable core comprises an optical fiber cable core located in the center of the cable and a plurality of conductive cable cores arranged around the optical fiber cable core. The first water-blocking layer and the second water-blocking layer are both formed by wrapping a semi-conductive water-blocking tape, and the wrapping overlapping rate of the first water-blocking layer and the second water-blocking layer is not lower than 25%. The structure design of the cable aims at transmitting electric energy, electric signals and optical signals at the same time, the transmission lines do not interfere with one another, and the cable has a high water-blocking effect and good mechanical performance at the same time. Through cable structure improvement, high water resistance and mechanical strength of the photoelectric composite cable are achieved, and the photoelectric composite cable is suitable for occasions where power and data signals need to be transmitted at the same time.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, specifically to a reinforced photoelectric integrated water-blocking cable. Background Technology

[0002] With the rapid development of the economy, optical cables and electrical cables are increasingly used in industrial equipment, which are becoming more functional, intelligent, and automated. Generally, electrical cables and optical cables are used separately in equipment, which takes up a lot of space. Highly integrated optoelectronic composite cables have emerged to meet the needs of this industry.

[0003] Chinese utility model patent CN206075901U discloses a reinforced optoelectronic composite cable, comprising, from the inside out, a cable core, a braided layer, a reinforcing member, and a sheath layer. The cable core includes optical units and conductive units. The optical units are stainless steel tape armored onto nylon-clad optical fibers. The conductive units consist of two or more conductive cores concentrically twisted together. Each conductive core is an inner conductor composed of multiple strands of silver-plated copper wire or silver-plated copper alloy wire twisted together, along with extruded PFA insulation. The braided layer is constructed by cross-braiding multiple strands of tin-plated copper wire or tin-plated copper alloy wire onto the cable core. The reinforcing member consists of multiple strands of aramid yarn placed directly around the braided layer. The sheath layer is made of TPE extruded onto the outermost layer of the cable.

[0004] However, the applicant's research revealed that the existing products lack sufficient waterproofing. During transportation, laying, and pulling operations, if the sheath layer is damaged, moisture cannot be prevented from penetrating the interior of the optoelectronic cable, affecting its use and potentially causing accidents. Utility Model Content

[0005] To overcome the above-mentioned technical defects, this utility model provides a reinforced photoelectric integrated water-blocking cable.

[0006] To solve the above problems, this utility model is implemented according to the following technical solution:

[0007] The present invention provides a reinforced photoelectric integrated water-blocking cable, comprising, from the inside out, a cable core, an inner sheath layer, a first water-blocking layer, a braided layer, a second water-blocking layer, and an outer sheath layer;

[0008] The cable core includes an optical fiber core located at the center of the cable, and multiple conductive cores arranged around the optical fiber core.

[0009] Both the first water-blocking layer and the second water-blocking layer are formed by wrapping semi-conductive water-blocking tape, and the overlap rate of the wrapping of the first water-blocking layer and the second water-blocking layer is not less than 25%.

[0010] Preferably, the inner sheath is made of polyetheretherketone (PEEK) material extruded and covering the outer periphery of the cable core.

[0011] Preferably, the braided layer is a metal mesh structure formed by braiding tin-plated copper wire or tin-plated copper alloy wire, and the braiding density of the braided layer is not less than 70%.

[0012] Preferably, the outer sheath layer is a thermoplastic elastomer material extruded and covered on the outer peripheral surface of the second water-blocking layer.

[0013] Preferably, the outer peripheral surface of the outer sheath layer is further provided with a wear-resistant layer, which is a black high-wear-resistant nylon sheath.

[0014] Preferably, the cable core further includes multiple reinforcing yarns, which are aramid yarn 3200 or aramid yarn 6320.

[0015] Preferably, the gaps in the cable core are also filled with multiple water-blocking yarns.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model provides a reinforced photoelectric integrated water-blocking cable, comprising, from the inside out, a cable core, an inner sheath layer, a first water-blocking layer, a braided layer, a second water-blocking layer, and an outer sheath layer. The cable core includes an optical fiber core located at the center of the cable, and multiple conductive cores arranged around the optical fiber core. Both the first and second water-blocking layers are formed by wrapping with semi-conductive water-blocking tape, and the overlap rate of the wrapping of the first and second water-blocking layers is not less than 25%.

[0018] The cable structure design of this utility model aims to transmit electrical energy, electrical signals, and optical signals simultaneously, with no interference between the transmission lines, while also possessing high water resistance and good mechanical properties. Through cable structure improvement, a photoelectric composite cable with high water resistance and mechanical strength is achieved, making it suitable for applications requiring simultaneous transmission of power and data signals.

[0019] The cable structure employs a combination of a first water-blocking layer and a second water-blocking layer. This combined structural design effectively prevents moisture from penetrating the cable's interior, protecting the conductors and optical fibers from the effects of a humid environment, thereby ensuring the cable's reliability and safety. Through this multi-layered water-blocking structure, the cable can maintain stable performance in harsh environments and reduce safety accidents caused by electrical faults. Attached Figure Description

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the cross-sectional structure of a reinforced photoelectric integrated water-blocking cable according to this utility model;

[0022] In the picture:

[0023] 10-Cable core, 11-Fiber optic core, 12-Conductor core, 13-Reinforcing yarn;

[0024] 20 - Inner sheath layer;

[0025] 30 - First water-blocking layer;

[0026] 40-woven layers;

[0027] 50 - Second water-blocking layer;

[0028] 60 - Outer sheath layer. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] like Figure 1 As shown, this utility model discloses a preferred structure for a reinforced photoelectric integrated water-blocking cable.

[0031] like Figure 1 As shown, the reinforced photoelectric integrated water-blocking cable of this utility model includes, from the inside out, a cable core, an inner sheath layer, a first water-blocking layer, a braided layer, a second water-blocking layer, and an outer sheath layer. The cable core includes an optical fiber core located at the center of the cable, and multiple conductive cores arranged around the optical fiber core. Both the first and second water-blocking layers are formed by wrapping with semi-conductive water-blocking tape, and the overlap rate of the wrapping of the first and second water-blocking layers is not less than 25%.

[0032] The cable structure design of this utility model aims to transmit electrical energy, electrical signals, and optical signals simultaneously, with no interference between the transmission lines, while also possessing high water resistance and good mechanical properties. Through cable structure improvement, a photoelectric composite cable with high water resistance and mechanical strength is achieved, making it suitable for applications requiring simultaneous transmission of power and data signals.

[0033] The cable structure employs a combination of a first water-blocking layer and a second water-blocking layer. This combined structural design effectively prevents moisture from penetrating the cable's interior, protecting the conductors and optical fibers from the effects of a humid environment, thereby ensuring the cable's reliability and safety. Through this multi-layered water-blocking structure, the cable can maintain stable performance in harsh environments and reduce safety accidents caused by electrical faults.

[0034] In one specific implementation, the wrapping overlap rate refers to the proportion of overlap between two adjacent layers of tape during the wrapping process. A higher overlap rate ensures that when the cable is exposed to external moisture, water is less likely to penetrate into the cable's interior, thus protecting the cable's internal structure from damage. The wrapping overlap rate of the first and second water-blocking layers is no less than 25%. This setting ensures that the cable has sufficient water-blocking capacity, which helps to improve the cable's waterproof performance.

[0035] In a preferred embodiment, the inner sheath is made of polyetheretherketone (PEEK) material extruded and covering the outer periphery of the cable core. PEEK has a high melting point (334°C) and glass transition temperature (143°C), with a continuous operating temperature of 260°C; its use in the inner sheath meets the requirements for cable operation in high-temperature environments. PEEK is self-extinguishing and, even without any flame retardants, achieves the UL standard 94V-0 rating, the optimal level of flame retardancy. This provides a certain degree of protection against fire damage to the cable, ensuring power supply needs are met.

[0036] In a preferred embodiment, the braided layer is a metal mesh structure formed by braiding tin-plated copper wire or tin-plated copper alloy wire, and the braiding density of the braided layer is not less than 70%.

[0037] The requirement of a braiding density of no less than 70% is to ensure that the cable has good shielding performance and anti-interference capabilities. The metal mesh structure can effectively provide electromagnetic interference (EMI) shielding, protecting the internal signal transmission of the cable from interference by external electromagnetic fields, while also reducing the electromagnetic radiation emitted by the cable itself.

[0038] In a preferred embodiment, the outer sheath layer is a thermoplastic elastomer material extruded and covered on the outer periphery of the second water-blocking layer. In this technology, thermoplastic elastomer (TPE) is used as the outer sheath layer; this material combines the properties of plastics and rubber and is known as "third-generation synthetic rubber." The main function of the outer sheath layer is to improve the mechanical strength of the wire and cable and to provide protection for the internal structure.

[0039] In a preferred embodiment, the outer peripheral surface of the outer sheath layer is further provided with a wear-resistant layer, which is a black high-wear-resistant nylon sheath. The black high-wear-resistant nylon sheath has a lower coefficient of friction, a higher PV value, and better friction and wear resistance and self-lubrication properties than pure nylon resin. Wear-resistant nylon has superior wear resistance, heat resistance, oil resistance, and corrosion resistance, and also significantly reduces the water absorption and shrinkage rate of the raw materials. It has excellent dimensional stability and superior strength, giving the product a longer service life and making the sheath less susceptible to physical and mechanical damage. Tests were conducted according to Appendix D of the JB / T13795-2020 standard for wear resistance performance testing. The test results show that the product requires 302,500 cycles to withstand 1 mm of wear.

[0040] In a preferred embodiment, the cable core further includes multiple reinforcing yarns, which are aramid yarn 3200 or aramid yarn 6320. Aramid yarn, as reinforcing yarn, can provide additional mechanical strength to the cable. The high tensile strength and low elongation of aramid yarn make it ideal for cable reinforcement elements, especially in applications requiring high tensile strength.

[0041] In a preferred embodiment, the gaps in the cable core are further filled with multiple water-blocking yarns. In a specific embodiment, the water-blocking yarns are semi-conductive water-blocking yarns. In a specific embodiment, this technology imparts water-blocking performance to the cable through a combination structure of a first water-blocking layer, water-blocking yarn filling, and a second water-blocking layer.

[0042] In practical implementation, existing technologies can be consulted regarding both the optical fiber core and the conductive core. For example, the fiber core structure described in CN206075901U does not involve the core optical fiber core and the conductive core as core modifications in this technology.

[0043] In one specific implementation, the conductive core comprises an inner conductor made of multiple strands of tinned copper wire or tinned copper alloy wire, and an extruded TPE insulation layer. The optical fiber core is made of stainless steel tape armored onto a nylon-clad optical fiber.

[0044] Specifically, the number of conductive fiber cores is 3 or more, and the number of optical fiber cores is preferably 1 to 2.

[0045] Other structures of the reinforced photoelectric integrated water-blocking cable described in this embodiment are available in the prior art.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A reinforced photoelectric integrated water-blocking cable, characterized in that, It includes, from the inside out, a cable core, an inner sheath, a first water-blocking layer, a braided layer, a second water-blocking layer, and an outer sheath; The cable core includes an optical fiber core located at the center of the cable, and multiple conductive cores arranged around the optical fiber core. Both the first water-blocking layer and the second water-blocking layer are formed by wrapping semi-conductive water-blocking tape, and the overlap rate of the wrapping of the first water-blocking layer and the second water-blocking layer is not less than 25%.

2. The reinforced photoelectric integrated water-blocking cable according to claim 1, characterized in that: The inner sheath is made of polyetheretherketone (PEEK) material extruded and covered on the outer periphery of the cable core.

3. The reinforced photoelectric integrated water-blocking cable according to claim 1, characterized in that: The braided layer is a metal mesh structure formed by braiding tin-plated copper wire or tin-plated copper alloy wire, and the braiding density of the braided layer is not less than 70%.

4. The reinforced photoelectric integrated water-blocking cable according to claim 1, characterized in that: The outer sheath layer is a thermoplastic elastomer material extruded and covered on the outer periphery of the second water-blocking layer.

5. A reinforced photoelectric integrated water-blocking cable according to claim 4, characterized in that: The outer peripheral surface of the outer sheath layer is also provided with a wear-resistant layer, which is a black high wear-resistant nylon sheath.

6. A reinforced photoelectric integrated water-blocking cable according to any one of claims 1 to 5, characterized in that: The cable core also includes multiple reinforcing yarns, which are aramid yarn 3200 or aramid yarn 6320.

7. A reinforced photoelectric integrated water-blocking cable according to any one of claims 1 to 5, characterized in that: The gaps in the cable core are also filled with multiple water-blocking yarns.

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