CN218866780U

CN218866780U - Photoelectric composite cable

Info

Publication number: CN218866780U
Application number: CN202320041570.XU
Authority: CN
Inventors: 朱戴根; 周华; 缪威玮; 缪小明; 顾旭东; 钱慧慧
Original assignee: Jiangsu Zhongtian Technology Co Ltd
Current assignee: Jiangsu Zhongtian Technology Co Ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-04-14
Anticipated expiration: 2033-01-06

Abstract

The utility model provides a photoelectric composite cable. This photoelectric composite cable includes: the cable core comprises an electric unit and an optical unit structure arranged on the periphery of the electric unit; the cooling fiber layer can dissipate heat and cool the cable core, and the cooling fiber layer is arranged on the periphery of the electric unit and/or the optical unit structure; the water blocking layer is coated on the periphery of the cable core; and the protective layer is coated on the periphery of the waterproof layer. The technical scheme of the utility model the photoelectric composite cable can solve the relatively poor problem of fire resistance of current indoor optical cable.

Description

Photoelectric composite cable

Technical Field

The utility model relates to a communication optical cable technical field particularly, relates to a photoelectric composite cable.

Background

The photoelectric composite cable is a novel optical cable combining optical signal transmission and electric signal transmission, has the characteristics of high reliability, high transmission efficiency, convenience in connection and the like, and is widely applied to the field of communication. The optical-electrical composite cable can be used for an indoor router access network, and users need to pay attention not only to the transmission performance of the optical-electrical composite cable, but also to the safety of the optical-electrical composite cable in an indoor use environment, such as fire resistance.

The optical cable is at the in-process of operation, and the temperature of cable core can rise gradually, and the fire resistance of current indoor optical cable is relatively poor, and when the local high temperature of optical cable, the optical cable takes place to catch fire easily.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a photoelectric composite cable can solve the relatively poor problem of fire resistance of current indoor optical cable.

In order to achieve the above object, according to an aspect of the present invention, there is provided an optical electrical composite cable, including: the cable core comprises an electric unit and an optical unit structure arranged on the periphery of the electric unit; the cooling fiber layer can dissipate heat and cool the cable core, and the cooling fiber layer is arranged on the periphery of the electric unit and/or the optical unit structure; the waterproof layer is coated on the periphery of the cable core; and the protective layer is coated on the periphery of the waterproof layer.

Furthermore, the cool fiber layer is made of mint fibers.

Further, the light unit structure comprises a plurality of light units which are arranged at intervals along the circumferential direction of the electric units; and/or the periphery of each light unit is provided with a tight sleeve.

Further, the light unit structure further comprises a fire protection structure, and the fire protection structure is filled in gaps among the light units.

Furthermore, the photoelectric composite cable further comprises a plurality of water-blocking yarns, the plurality of water-blocking yarns are arranged in the fireproof structure at intervals along the circumferential direction, water-blocking powder is arranged on each water-blocking yarn, and the water-blocking yarns and the optical units are alternately arranged.

Further, the outer periphery of the electric unit and the outer periphery of the light unit structure are both coated with the cool fiber layers.

Furthermore, the photoelectric composite cable also comprises a flame retardant coating, the protective layer comprises an inner protective layer and an outer protective layer, and the inner protective layer, the flame retardant coating and the outer protective layer are sequentially arranged from inside to outside on the periphery of the water resistant layer.

Furthermore, the inner protection layer and the outer protection layer are low-smoke halogen-free protection layers, and insect prevention layers are arranged in the outer protection layers; and/or the fire-resistant layer is a silicate fiber layer.

Furthermore, a tight sleeve is sleeved outside each optical unit, the residual length of each optical unit in the tight sleeve is a, and the value range of a is more than or equal to 0.015% and less than or equal to 0.025%.

Furthermore, the thickness of the cool fiber layer is H, and the value range of H is more than or equal to 0.45mm and less than or equal to 0.55mm.

Use the technical scheme of the utility model, be provided with the cable core, cool fibrous layer, water blocking layer and protective layer, at the practical application in-process, can set up cool sense fibrous layer or set up cool sense fibrous layer in the periphery of light cell structure in the periphery of electric unit, also can set up cool sense fibrous layer in the periphery of electric unit and light cell structure simultaneously, the water blocking layer cladding is in the periphery of cable core, can block water, the protective layer cladding is in the periphery of water blocking layer, can protect water blocking layer and cable core. In the operation process of the photoelectric composite cable, the temperature of the cable core is generally higher than the ambient temperature, the cooling fiber layer is arranged on the periphery of the electric unit and/or the optical unit structure, the cooling fiber layer has natural cooling, so that a temperature difference can be formed between the cooling fiber layer and the electric unit and/or the optical unit structure, according to the heat transfer principle, the heat of the electric unit and/or the optical unit structure can be transferred to the cooling fiber layer, the heat dissipation and cooling of the electric unit and/or the optical unit structure are realized, the temperature of the cable core can be adjusted from the inside of the photoelectric composite cable through the cooling fiber layer, the local overheating of the photoelectric composite cable is prevented, the probability of the photoelectric composite cable firing from the inside is reduced, and the fire resistance of the photoelectric composite cable is improved.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to constitute a limitation on the invention. On the attachment

In the figure:

fig. 1 shows a schematic structural diagram of an optical/electrical composite cable according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. an electrical unit; 20. a light unit structure; 21. a light unit; 22. an optical unit structure sheath; 30. a cool fiber layer; 40. a water resistant layer; 50. a protective layer; 51. an inner sheath layer; 52. an outer jacket; 60. a fire-resistant structure; 70. water-blocking yarn; 80. a refractory layer; 90. and (5) tightening the sleeve.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, the utility model provides a photoelectric composite cable, this photoelectric composite cable includes: the cable core comprises an electric unit 10 and an optical unit structure 20 arranged on the periphery of the electric unit 10; the cooling fiber layer 30 can dissipate heat and cool the cable core, and the cooling fiber layer 30 is arranged on the periphery of the electric unit 10 and/or the optical unit structure 20; the waterproof layer 40 is coated on the periphery of the cable core; and the protective layer 50 is coated on the periphery of the waterproof layer 40.

In this embodiment, the optical/electrical composite cable includes a cable core and a cool fiber layer 30, and in practical applications, the cool fiber layer 30 may be disposed on the outer periphery of the electrical unit 10 or the cool fiber layer 30 may be disposed on the outer periphery of the optical unit structure 20, or the cool fiber layer 30 may be disposed on the outer peripheries of the electrical unit 10 and the optical unit structure 20, the water blocking layer 40 is coated on the outer periphery of the cable core to block water, and the protective layer 50 is coated on the outer periphery of the water blocking layer 40 to protect the water blocking layer 40 and the cable core. In the operation process of the optical-electrical composite cable, the electric unit 10 and the optical unit structure 20 generate heat, the temperature of the cable core is generally higher than the ambient temperature, the cooling fiber layer 30 is arranged on the periphery of the electric unit 10 and/or the optical unit structure 20, and the cooling fiber layer 30 has natural cooling, so that a temperature difference can be formed between the cooling fiber layer and the electric unit 10 and/or the optical unit structure 20, according to the heat transfer principle, at this time, the heat of the electric unit 10 and/or the optical unit structure 20 can be transferred to the cooling fiber layer 30, so as to realize the heat dissipation and cooling of the electric unit 10 and/or the optical unit structure 20, and the cooling fiber layer 30 can adjust the temperature of the cable core from the inside of the optical-electrical composite cable, so as to prevent the local overheating of the optical-electrical composite cable, reduce the possibility of the optical-electrical composite cable firing from the inside, and improve the fire resistance of the optical-electrical composite cable.

As shown in fig. 1, in an embodiment of the present invention, the cool fiber layer 30 is made of mint fiber.

In this embodiment, the cool fiber layer 30 is made of the existing mint fiber, and the mint fiber has natural cool feeling and human affinity, so that the temperature of the cable core can be reduced, local overheating of the photoelectric composite cable can be prevented, and the probability of fire of the photoelectric composite cable can be effectively reduced. In addition, at normal atmospheric temperature, the mint fiber can give off a strand of fragrance, and when the photoelectric composite cable takes place the damage, cable core and cool feeling fibrous layer 30 exposed in the air, mint fiber's fragrance is diffused in the air, and at this moment, the user can discover that photoelectric composite cable produces the damage through fragrance to in time change it, and the mint fiber can not release toxic substance to the air, can not cause harm to the human body.

In one embodiment, the cool fiber layer 30 may be a nylon cool fabric or a polyester cool fabric, or may be natural benign fibers such as spandex blended yarn and ice silk, or the cool fiber layer 30 may be sponge or elastic fiber if the cool requirement is not high.

As shown in fig. 1, in an embodiment of the present invention, the light unit structure 20 includes a plurality of light units 21, the light units 21 are arranged at intervals along the circumference of the electrical unit 10, and the periphery of each light unit 21 is provided with a fastening sleeve 90.

In the embodiment, the optical unit 21 is a bending insensitive optical fiber for G657 access network with a cross section diameter of 245 μm (micrometer), the optical fiber has good bending performance, the periphery of each optical unit 21 is provided with a tight sleeve 90 to protect the optical fiber well, and dry filling is adopted instead of adding fiber paste inside the optical unit 21, so that the optical unit is more environment-friendly and safer, and possible pollution caused by the filling materials such as the fiber paste is avoided. In addition, a plurality of optical units 21 are arranged at intervals along the circumferential direction of the electrical unit 10, so that the optical units 21 coated with the tight sleeves 90 can be uniformly distributed on the periphery of the electrical unit 10, and the cross section of the photoelectric composite cable is more attractive.

In one embodiment of the present invention, a micro-bundle tube is used, i.e. a plurality of optical fibers are arranged in a sleeve based on the tight-buffered optical fibers.

In one embodiment of the present invention, a copper wire is used as the electrical unit 10, the diameter of the copper wire is about 1mm, and the cross-sectional area is about 0.78mm ² The number of the optical units 21 is 6, a tight sleeve 90 is sleeved outside each optical unit 21, the electric unit 10 is arranged in the center of the cable core, and the 6 optical units 21 sleeved with the tight sleeve 90 are arranged at intervals along the circumferential direction of the electric unit 10 to form a core-6-tube structure.

In an embodiment of the present invention, the periphery of the light unit structure 20 is provided with a light unit structure sheath 22, the thickness is about 0.5mm, and the material of the light unit structure sheath 22 is LZSH environment-friendly low-smoke halogen-free flame-retardant polyolefin material, which has good fire-resistant and flame-retardant properties.

As shown in fig. 1, in one embodiment of the present invention, the light unit structure 20 further includes a fire-proof structure 60, and the fire-proof structure 60 is filled in the space between the light units 21.

In this embodiment, the fire-resistant structure 60 may be selected from asbestos or glass wool. Asbestos and glass wool all have good fire resistance, fill in the space between each light unit 21 moreover, can make the overall structure of optoelectrical composite cable more round pleasing to the eye, and in addition, waterproof layer 40 wraps the periphery at fire resistive construction 60, can further ensure the waterproof performance of optoelectrical composite cable.

As shown in fig. 1, in an embodiment of the present invention, the photoelectric composite cable further includes a plurality of water-blocking yarns 70, the plurality of water-blocking yarns 70 are disposed in the fire-proof structure 60 at intervals along the circumferential direction, and each water-blocking yarn 70 is provided with water-blocking powder, and the water-blocking yarns 70 and the electric units 10 are alternately arranged.

In this embodiment, fire resistive construction 60 adopts the asbestos, and the yarn 70 that blocks water sets up in the asbestos, and the last waterproof powder that is provided with of yarn 70 that blocks water, the moisture in the asbestos of the waterproof powder can be absorbed, and when the photoelectric composite cable receives the tide, the waterproof powder absorbs moisture and takes place the inflation, and the expanded waterproof powder can extrude the asbestos, makes the asbestos compacter to can prevent that moisture further inside from diffusing, avoid causing the destruction to the cable core.

As shown in fig. 1, in an embodiment of the present invention, the outer periphery of the electrical unit 10 and the outer periphery of the optical unit structure 20 are both covered with the cool fiber layer 30, the thickness of the cool fiber layer 30 is H, and the value range of H is 0.45mm or less and H is 0.55mm or less.

In this embodiment, the cooling fiber layers 30 are respectively wrapped on the peripheries of the electrical unit 10 and the optical unit structure 20, so that the cable core can be better cooled, heat generated by the electrical unit 10 and the optical unit structure 20 in the working process can be transmitted to the cooling fiber layers 30, and the electrical unit 10 and the optical unit structure 20 can be cooled, and the cooling fiber layers 30 can adjust the temperature of the cable core from the inside of the optical-electrical composite cable, so as to prevent local overheating of the optical-electrical composite cable and reduce the probability of fire from the inside, so that the fire resistance of the optical-electrical composite cable can be improved, and in addition, the value range of the thickness H of the cooling fiber layers 30 is not less than 0.45mm and not more than 0.55mm, so that the production cost can be saved on the premise of ensuring the cooling and heat dissipation performance of the cooling fiber layers 30 on the cable core.

As shown in fig. 1, in an embodiment of the present invention, the optical electrical composite cable further includes a fire-resistant layer 80, the protective layer 50 includes an inner protective layer 51 and an outer protective layer 52, the inner protective layer 51, the fire-resistant layer 80 and the outer protective layer 52 are sequentially disposed from inside to outside at the periphery of the water-resistant layer 40, and the fire-resistant layer 80 is a silicate fiber layer.

In this embodiment, the fire-resistant layer 80 is disposed between the inner protective layer 51 and the outer protective layer 52, the fire-resistant layer 80 is a silicate fiber layer, and the silicate fiber layer is a fire-resistant material, and has excellent fire resistance, so that the fire resistance of the optical-electrical composite cable can be further improved.

Specifically, in one embodiment of the present invention, the silicate fiber layer is a silicate woven mesh.

The fire-resistant requirements of the current optical cable industry for optical cables are to meet CPR certification, namely CPRB2ca certification that the heat release amount is less than or equal to 15MJ, and the smoke release amount is less than or equal to 50m ² The peak value of the heat release rate is less than or equal to 30kw, and the peak value of the smoke release rate is less than or equal to 0.5m ² (s), the smoke density is more than or equal to 80 percent, and the bundled combustion length is less than or equal to 1.5m.

As shown in fig. 1, in an embodiment of the present invention, the inner protection layer 51 and the outer protection layer 52 both adopt a low smoke zero halogen sheath, and an insect-proof layer is disposed in the outer protection layer 52.

In this embodiment, the inner sheath 51 and the outer sheath 52 both adopt low-smoke halogen-free sheaths, and the low-smoke halogen-free sheaths have excellent flame retardant property, low smoke, halogen-free and non-toxic during combustion, the heat release amount is less than or equal to 15MJ, and the smoke release amount is less than or equal to 50m ² The peak value of heat release rate is less than or equal to 30kw, and the peak value of smoke release rate is less than or equal to 0.5m ² And/s, the smoke density is more than or equal to 80%, the bundled combustion length is less than or equal to 1.5m, and the requirement on fire resistance is met. In addition, the arrangement of the insect-proof layer can enable the photoelectric composite cable to have an insect-proof effect.

Specifically, in an embodiment of the present invention, the insect-proof layer can be an insect-proof net made of polyethylene with chemical additives such as anti-aging and anti-ultraviolet, and can also be formed by adding trace amount of essential balm during the production process of the outer protective layer 52 to remain the camphor, eucalyptus oil, methyl salicylate, etc. in the outer protective layer 52, so that the photoelectric composite cable has insect-proof function.

As shown in fig. 1, in an embodiment of the present invention, a tight sleeve 90 is sleeved outside each light unit 21, the remaining length of each light unit 21 in the tight sleeve 90 is a, and the value range of a is greater than or equal to 0.015% and less than or equal to 0.025%.

In this embodiment, the optical unit 21 is made of 245um G657 bend insensitive optical fiber for access network, and a tight sleeve 90 is sleeved outside each optical fiber to protect the optical fiber well. The excess length of the fiber within tight tube 90 is a, where excess length is defined as the ratio of the difference in the length of the fiber within the tight tube relative to the length of the tight tube to the ratio of the length of the tight tube in thousandths of a. Through the arrangement, the mechanical property and the environmental property of the optical cable composite cable can be ensured.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the cable core is provided with the cable core, the cool fiber layer, the water blocking layer and the protective layer, in the practical application process, the cool fiber layer can be arranged at the periphery of the electric unit or the light unit structure, the cool fiber layer can also be arranged at the periphery of the electric unit and the light unit structure, the water blocking layer covers the periphery of the cable core and can block water, and the protective layer covers the periphery of the water blocking layer and can protect the water blocking layer and the cable core. In the operation process of the photoelectric composite cable, the temperature of the cable core is generally higher than the ambient temperature, the cooling fiber layer is arranged on the periphery of the electric unit and/or the optical unit structure, the cooling fiber layer has natural cooling, so that a temperature difference can be formed between the cooling fiber layer and the electric unit and/or the optical unit structure, according to the heat transfer principle, the heat of the electric unit and/or the optical unit structure can be transferred to the cooling fiber layer, the heat dissipation and cooling of the electric unit and/or the optical unit structure are realized, the temperature of the cable core can be adjusted from the inside of the photoelectric composite cable through the cooling fiber layer, the local overheating of the photoelectric composite cable is prevented, the probability of the photoelectric composite cable firing from the inside is reduced, and the fire resistance of the photoelectric composite cable is improved.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical-electrical composite cable, comprising:

a cable core comprising an electrical unit (10) and an optical unit structure (20) arranged at the periphery of the electrical unit (10);

the cooling fiber layer (30) can dissipate heat and cool the cable core, and the cooling fiber layer (30) is arranged on the periphery of the electric unit (10) and/or the optical unit structure (20);

the waterproof layer (40) is coated on the periphery of the cable core;

and the protective layer (50) is coated on the periphery of the waterproof layer (40).

2. The photoelectric composite cable according to claim 1, wherein the cool fiber layer (30) is made of mint fiber.

3. The optical-electrical composite cable according to claim 1, wherein the optical unit structure (20) comprises a plurality of optical units (21), the plurality of optical units (21) being arranged at intervals along a circumferential direction of the electrical unit (10); and/or the periphery of each light unit (21) is provided with a tight sleeve (90).

4. The optical-electrical composite cable of claim 3, wherein the optical cell structure (20) further comprises a fire-resistant structure (60), the fire-resistant structure (60) filling voids between the optical cells (21).

5. The photoelectric composite cable according to claim 4, further comprising a plurality of water-blocking yarns (70), wherein the plurality of water-blocking yarns (70) are circumferentially arranged in the fireproof structure (60) at intervals, each water-blocking yarn (70) is provided with water-blocking powder, and the water-blocking yarns (70) and the optical units (21) are alternately arranged.

6. The optoelectric composite cable of claim 1, wherein an outer periphery of the electric unit (10) and an outer periphery of the optical unit structure (20) are both coated with the layer of cooling fibers (30).

7. The opto-electric composite cable according to any one of claims 1 to 6, characterized in that it further comprises a fire-resistant layer (80), the protective layer (50) comprising an inner sheath (51) and an outer sheath (52), the inner sheath (51), the fire-resistant layer (80) and the outer sheath (52) being arranged in sequence from inside to outside at the outer periphery of the water-resistant layer (40).

8. The photoelectric composite cable according to claim 7, wherein the inner sheath (51) and the outer sheath (52) both adopt a low smoke zero halogen sheath, and an insect-proof layer is arranged in the outer sheath (52); and/or the fire-resistant layer (80) is a silicate fiber layer.

9. The photoelectric composite cable according to claim 3, wherein a tight sleeve (90) is sleeved outside each optical unit (21), the remaining length of each optical unit (21) in the tight sleeve (90) is a, and the value range of a is between 0.015% and 0.025%.

10. The optoelectrical composite cable of any one of claims 1 to 6, wherein the layer of cool fibers (30) has a thickness H that ranges from 0.45mm to H to 0.55mm.