CN223513687U - Reinforced photoelectric comprehensive water-blocking cable - Google Patents

Abstract

This utility model discloses 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 surrounding the optical fiber core. Both the first and second water-blocking layers are formed by wrapping with semi-conductive water-blocking tape, with an overlap rate of not less than 25%. The cable structure design of this utility model aims to simultaneously transmit electrical energy, electrical signals, and optical signals, with no interference between the transmission lines, while possessing high water-blocking performance and good mechanical properties. Through cable structure improvement, high water-blocking performance and mechanical strength are achieved in the photoelectric integrated cable, making it suitable for applications requiring simultaneous transmission of power and data signals.

Description

Reinforced photoelectric comprehensive water-blocking cable

Technical Field

The utility model relates to the technical field of wires and cables, in particular to a reinforced photoelectric comprehensive water-blocking cable.

Background

With the high-speed development of economy, optical cables and cables are increasingly applied to industrial equipment, the equipment has multiple functions and high intelligent and automatic degrees, and the general cables and the optical cables are used separately in the equipment, so that the occupied space is relatively large, and the high-integration photoelectric comprehensive cable meets the use requirement.

The Chinese patent publication No. CN206075901U discloses a reinforced photoelectric composite cable which comprises a cable core, a braiding layer, a reinforcing piece and a sheath layer from inside to outside, wherein the cable core comprises a light unit and a conductive unit, the light unit is sheathed on a nylon tightly-wrapped optical fiber by a stainless steel belt, the conductive unit is formed by concentrically twisting two or more conductive wire cores, the conductive wire cores are formed by insulating an inner conductor formed by twisting a plurality of silver-plated copper wires or silver-plated copper alloy wires and a PFA (poly ethylene-propylene) through extrusion, the braiding layer is formed by alternately braiding a plurality of tin-plated copper wires or tin-plated copper alloy wires on the cable core, the reinforcing piece is formed by directly placing a plurality of aramid yarns around the braiding layer, and the sheath layer is formed by extruding TPE (thermoplastic elastomer) on the outermost layer of the cable.

However, the applicant has found that the existing products are deficient in waterproof performance. In the processes of transportation, laying, pulling operation and the like, once the sheath layer is damaged, water vapor cannot be prevented from invading the inside of the photoelectric comprehensive cable, the use of the cable is affected, and accidents are easily caused.

Disclosure of utility model

In order to overcome the technical defects, the utility model provides a reinforced photoelectric comprehensive water-blocking cable.

In order to solve the problems, the utility model is realized according to the following technical scheme:

The utility model relates to a reinforced photoelectric comprehensive water-blocking cable, which comprises a cable core, an inner sheath layer, a first water-blocking layer, a braiding 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 wire core positioned in the center of the cable and a plurality of conductive wire cores arranged around the optical fiber wire core;

The first water-resistant layer and the second water-resistant layer are formed by wrapping semi-conductive water-resistant tapes, and the wrapping overlapping rate of the first water-resistant layer and the second water-resistant layer is not lower than 25%.

Preferably, the inner sheath is made of polyether-ether-ketone material and is covered on the outer circumferential surface of the cable core in an extrusion coating mode.

Preferably, the braiding layer is a metal net structure formed by braiding tinned copper wires or tinned copper alloy wires, and the braiding density of the braiding layer is not less than 70%.

Preferably, the outer sheath layer is made of thermoplastic elastomer material and is covered on the outer peripheral surface of the second water-resistant layer in an extrusion mode.

Preferably, the outer peripheral surface of the outer sheath layer is also provided with a wear-resistant layer, and the wear-resistant layer is a black high-wear-resistant nylon sheath.

Preferably, the cable core further comprises a plurality of reinforcing yarns, the reinforcing yarns being aramid yarns 3200 or 6320.

Preferably, the gaps of the cable core are also filled with a plurality of water-blocking yarns.

Compared with the prior art, the utility model has the beneficial effects that:

The utility model provides a reinforced photoelectric comprehensive water-blocking cable which comprises a cable core, an inner sheath layer, a first water-blocking layer, a braiding 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 core positioned in the center of the cable and a plurality of conductive cores arranged around the optical fiber core. The first water-resistant layer and the second water-resistant layer are formed by wrapping semi-conductive water-resistant tapes, and the wrapping overlapping rate of the first water-resistant layer and the second water-resistant layer is not lower than 25%.

The cable structure design aims to simultaneously transmit electric energy, electric signals and optical signals, and all transmission lines have no interference with each other, and simultaneously have high water blocking effect and good mechanical property. Through the cable structure improvement, the high water blocking performance and the mechanical strength of the photoelectric comprehensive cable are realized, and the photoelectric comprehensive cable is suitable for occasions needing to transmit power and data signals simultaneously.

The combination of first water-resisting layer and second water-resisting layer has been adopted in the cable construction, and this integrated configuration design can prevent effectively that moisture from invading inside the cable, effectively protects conductor and the optic fibre inside the cable from the influence of humid environment to ensure reliability and the security of cable. Through the multilayer water blocking structure, the cable can maintain stable performance in a severe environment, and safety accidents caused by electrical faults are reduced.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic cross-sectional view of a reinforced photoelectric composite water-blocking cable of the present utility model;

In the figure:

10-cable cores, 11-optical fiber cores, 12-conductor cores and 13-reinforcing yarns;

20-an inner sheath layer;

30-a first water barrier layer;

40-braiding layers;

50-a second water barrier;

60-an outer sheath layer.

Detailed Description

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

As shown in fig. 1, the utility model relates to a preferable structure of a reinforced photoelectric comprehensive water blocking cable.

As shown in fig. 1, the reinforced photoelectric comprehensive water-blocking cable comprises a cable core, an inner sheath layer, a first water-blocking layer, a braiding 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 core positioned in the center of the cable and a plurality of conductive cores arranged around the optical fiber core. The first water-resistant layer and the second water-resistant layer are formed by wrapping semi-conductive water-resistant tapes, and the wrapping overlapping rate of the first water-resistant layer and the second water-resistant layer is not lower than 25%.

The cable structure design aims to simultaneously transmit electric energy, electric signals and optical signals, and all transmission lines have no interference with each other, and simultaneously have high water blocking effect and good mechanical property. Through the cable structure improvement, the high water blocking performance and the mechanical strength of the photoelectric comprehensive cable are realized, and the photoelectric comprehensive cable is suitable for occasions needing to transmit power and data signals simultaneously.

The combination of first water-resisting layer and second water-resisting layer has been adopted in the cable construction, and this integrated configuration design can prevent effectively that moisture from invading inside the cable, effectively protects conductor and the optic fibre inside the cable from the influence of humid environment to ensure reliability and the security of cable. Through the multilayer water blocking structure, the cable can maintain stable performance in a severe environment, and safety accidents caused by electrical faults are reduced.

In one implementation, the wrap overlap ratio refers to the ratio of the overlap between adjacent layers of tape during the wrapping process. A higher overlapping rate can ensure that the moisture is not easy to penetrate into the cable when the cable is invaded by external moisture, thereby protecting the internal structure of the cable from damage. The wrapping overlapping rate of the first water-resistant layer and the second water-resistant layer is not lower than 25%, and the arrangement is used for ensuring that the cable has enough water-resistant capability and is beneficial to improving the water-resistant performance of the cable.

In a preferred implementation, the inner sheath is made of polyether-ether-ketone material and is covered on the outer peripheral surface of the cable core in an extrusion coating mode. The polyether-ether-ketone (PEEK) has a high melting point (334 ℃) and a high glass transition temperature (143 ℃) and is used for manufacturing an inner sheath, and the use requirement of the cable in a high-temperature environment can be met. The polyether-ether-ketone has self-extinguishing property, and even if no flame retardant is added, the flame retardant can reach the 94V-0 grade of UL standard, and the optimal grade of flame retardance. The cable can be prevented from being damaged by fire to a certain extent, and the electricity consumption requirement is ensured.

In a preferred implementation, the braiding layer is a metal mesh structure formed by braiding tin-plated copper wires or tin-plated copper alloy wires, and the braiding density of the braiding layer is not less than 70%.

The requirement of not less than 70% by braiding density is to ensure good shielding performance and interference resistance of the cable. The metal mesh structure can effectively provide electromagnetic interference (EMI) shielding, protect signal transmission inside the cable from external electromagnetic fields, and simultaneously reduce electromagnetic radiation outside the cable itself.

In a preferred implementation, the outer sheath layer is made of thermoplastic elastomer material and is covered on the outer peripheral surface of the second water-resistant layer in an extrusion mode. In the present technology, a thermoplastic elastomer material (TPE) is used as an outer sheath layer, and this material has both properties of plastic and rubber, and is known as "third generation synthetic rubber". The main function of the outer jacket layer is to improve the mechanical strength of the wire and cable and to provide protection for the internal construction.

In a preferred implementation, the outer peripheral surface of the outer sheath layer is further provided with a wear-resistant layer, and the wear-resistant layer is a black high-wear-resistant nylon sheath. The black high-wear-resistance nylon sheath has lower friction coefficient, higher PV value and better friction and wear resistance property and better self-lubricating property than pure nylon resin. The wear-resistant nylon has more excellent wear resistance, heat resistance, oil resistance and corrosion resistance, greatly reduces the water absorption and shrinkage of raw materials, has excellent dimensional stability and excellent strength, and ensures that the technical product has longer service life and the sheath is not easy to be damaged by physical and mechanical. The test is carried out according to the annex D wear resistance test method in JB/T13795-2020 standard, and the test result shows that 30.25 ten thousand times are needed for the product of the technology to wear for 1 mm.

In a preferred implementation, the cable core further comprises a plurality of reinforcing yarns, the reinforcing yarns being aramid yarns 3200 or 6320. The aramid yarn acts as a reinforcing yarn that provides additional mechanical strength to the cable. The high tensile strength and low elongation of aramid yarns make them ideal choices for cable reinforcing members, especially in applications where high tensile strength is required.

In a preferred implementation, the gaps of the cable core are also filled with a plurality of water-blocking yarns. In a specific implementation, the water blocking yarn is a semiconductive water blocking yarn. In specific implementation, the technology endows the cable with water blocking performance through the combined structure of the first water blocking layer, the water blocking yarn filling and the second water blocking layer.

In a specific implementation, the prior art may be considered with respect to both the optical fiber core and the conductive core. For example, the core structure described in CN206075901U, the optical fiber core and the conductive core do not belong to the core modification of the present technology.

In one implementation, the conductive wire core comprises an inner conductor formed by twisting a plurality of tinned copper wires or tinned copper alloy wires and an extruded TPE insulating layer. The optical fiber core is sheathed on the nylon tightly-wrapped optical fiber by a stainless steel belt.

Specifically, the number of the conductive fiber cores is more than 3, and the number of the fiber cores is preferably 1-2.

Other structures of the reinforced photoelectric comprehensive water blocking cable described in this embodiment refer to the prior art.

The present utility model is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present utility model are within the scope of the technical proposal of the present utility model.

Claims (7)

1. The reinforced photoelectric comprehensive water-blocking cable is characterized by comprising a cable core, an inner sheath layer, a first water-blocking layer, a braiding 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 wire core positioned in the center of the cable and a plurality of conductive wire cores arranged around the optical fiber wire core;

The first water-resistant layer and the second water-resistant layer are formed by wrapping semi-conductive water-resistant tapes, and the wrapping overlapping rate of the first water-resistant layer and the second water-resistant layer is not lower than 25%.

2. The reinforced photovoltaic integrated water-blocking cable of claim 1, wherein:

The inner sheath is made of polyether-ether-ketone material and is covered on the outer circumferential surface of the cable core in an extrusion mode.

3. The reinforced photovoltaic integrated water-blocking cable of claim 1, wherein:

The braiding layer is of a metal net structure formed by braiding tinned copper wires or tinned copper alloy wires, and the braiding density of the braiding layer is not less than 70%.

4. The reinforced photovoltaic integrated water-blocking cable of claim 1, wherein:

The outer sheath layer is formed by extruding and coating a thermoplastic elastomer material on the outer peripheral surface of the second water-resistant layer.

5. The reinforced photovoltaic integrated water-blocking cable of claim 4, wherein:

the outer peripheral surface of the outer sheath layer is also provided with a wear-resistant layer, and the wear-resistant layer is a black high-wear-resistant nylon sheath.

6. A reinforced photovoltaic integrated water-blocking cable according to any of claims 1 to 5, characterized in that:

The cable core further comprises a plurality of reinforcing yarns, wherein the reinforcing yarns are aramid yarns 3200 or 6320.

7. A reinforced photovoltaic integrated water-blocking cable according to any of claims 1 to 5, characterized in that:

The gaps of the cable core are also filled with a plurality of water-blocking yarns.