CN217034350U

CN217034350U - Optical fiber with good cold resistance

Info

Publication number: CN217034350U
Application number: CN202220141436.2U
Authority: CN
Inventors: 许璐
Original assignee: Zhongke Zhixing Beijing Technology Co ltd
Current assignee: Zhongke Zhixing Beijing Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-07-22
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses an optical fiber with good cold resistance, which comprises an optical fiber conductor, wherein an insulating layer is arranged on the outer surface of the optical fiber conductor, a protective layer is arranged on one side, away from the optical fiber conductor, of the insulating layer, the protective layer comprises a metal shielding layer, a sheath outer layer is arranged on one side, away from the insulating layer, of the protective layer, the sheath outer layer comprises a polypropylene fiber layer, an aluminum magnesium alloy armor is arranged on one side, away from the sheath outer layer, of the polypropylene fiber layer, and a polyethylene layer is arranged on one side, away from the polypropylene fiber layer, of the aluminum magnesium alloy armor. The optical fiber conductor, the insulating layer, the protective layer and the outer layer of the sheath are arranged, so that the advantage of good cold resistance is achieved, and the problems that the traditional optical fiber is difficult to meet the use requirements of strong and low temperature environments, and when the optical fibers are in the strong and low environment temperature conditions, the material performance is reduced, and the phenomena of breakage, catalysis, aging and the like are easy to occur to influence the service life are solved.

Description

Optical fiber with good cold resistance

Technical Field

The utility model relates to the technical field of optical fibers, in particular to an optical fiber with good cold resistance.

Background

In daily life, since the transmission loss of light in an optical fiber is much lower than that of electricity in an electric wire, optical fibers are used for long-distance information transmission, usually, the optical fibers and optical cables are mixed, most optical fibers must be covered by several layers of protective structures before use, the covered cable is called an optical cable, and the protective layer and the insulating layer on the outer layer of the optical fibers can prevent the surrounding environment from damaging the optical fibers, such as water, fire, electric shock and the like.

Prior patent No. (CN106094103B) discloses a bend-resistant optical fiber, which includes a fiber core 1, a cladding layer 2 located outside the fiber core, a coating layer 3 located outside the cladding layer, and a coloring layer 5 located outside the coating layer, and is characterized in that: an anti-bending outer layer 4 is arranged between the coating layer and the coloring layer; the diameter of the cladding is 123-127 mu m, the concentricity error of the fiber core/the cladding is less than or equal to 0.6 mu m, the out-of-roundness of the cladding is less than or equal to 1.0%, the diameter of the coating layer is 210-230 mu m, the diameter of the anti-bending outer layer is 225-245 mu m, and the diameter of the coloring layer is 240-260 mu m; after the bending radius of the anti-bending optical fiber is loosely wound for 100 circles by 30mm, the additional attenuation of the 1310nm wavelength is less than or equal to 0.05dB/Km, the additional attenuation of the 1383nm wavelength is less than or equal to 0.05dB/Km, the additional attenuation of the 1550nm wavelength is less than or equal to 0.1dB/Km, and the additional attenuation of the 1625nm wavelength is less than or equal to 0.1 dB/Km; and (3) taking an anti-bending optical fiber with the length not less than 10cm, and enabling two ends of the anti-bending optical fiber to simultaneously penetrate through the cylindrical hole with the inner diameter of 2mm in the same direction, so that the anti-bending optical fiber is not broken. The inventor finds that the following problems exist in the prior art in the process of implementing the scheme: the optical fibers have poor cold resistance and are difficult to meet the use requirements of strong and low temperature environments, and when the optical fibers are under the condition of strong and low environmental temperature, the material performance is reduced, and the service life is influenced by phenomena of breakage, catalysis, aging and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an optical fiber with good cold resistance, which has the advantage of good cold resistance, and solves the problems that the traditional optical fiber is difficult to meet the use requirements of strong and low temperature environments, and when the optical fibers are in the strong and low environment temperature conditions, the material performance is reduced, and the service life is influenced by phenomena of breakage, catalysis, aging and the like.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an optic fibre that cold resistance is good, includes optical fiber conductor, optical fiber conductor's surface is provided with the insulating layer, one side that optical fiber conductor was kept away from to the insulating layer is provided with the inoxidizing coating, one side that the insulating layer was kept away from to the inoxidizing coating is provided with the sheath skin, the sheath skin includes the polypropylene fiber layer, the outer one side of sheath is kept away from on the polypropylene fiber layer is provided with the almag armor, one side that polypropylene fiber layer was kept away from to the almag armor is provided with the polyethylene layer.

Preferably, the inoxidizing coating includes the metallic shield layer, one side that the inoxidizing coating was kept away from to the metallic shield layer is provided with the bed course that blocks water, one side that the metallic shield layer was kept away from to the bed course that blocks water is provided with the woven shield layer.

Preferably, the insulating layer is made of silicon rubber, and the thickness of the insulating layer is the same as that of the protective layer.

Preferably, the outer surface of the optical fiber conductor is adhered to the inner surface of the insulating layer, the outer surface of the insulating layer is adhered to the inner surface of the protective layer, and the outer surface of the protective layer is adhered to the inner surface of the outer layer of the sheath.

Preferably, the optical fiber conductor can be a single solid conductor and a plurality of solid conductors, and the optical fiber conductor is a fiber made of glass or plastic.

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

1. the optical fiber conductor, the insulating layer, the protective layer and the outer layer of the sheath are arranged, so that the advantage of good cold resistance is achieved, and the problems that the traditional optical fiber is difficult to meet the use requirements of strong and low temperature environments, and when the optical fibers are in the strong and low environment temperature conditions, the material performance is reduced, and the phenomena of breakage, catalysis, aging and the like are easy to occur to influence the service life are solved.

2. The optical fiber conductor outer signal shielding protective layer has good cold resistance by arranging the protective sleeve outer layer, ensures that the optical fiber meets the use requirement of a low-temperature environment, and solves the problem that the optical fiber is inconvenient to use in the low-temperature environment.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a cross-sectional view of a protective layer structure according to the present invention;

fig. 3 is a cross-sectional view of the jacket outer layer structure of the present invention.

In the figure: 1. an optical fiber conductor; 2. an insulating layer; 3. a protective layer; 31. a metal shielding layer; 32. a water-blocking cushion layer; 33. weaving a shielding layer; 4. an outer layer of the sheath; 41. a polypropylene fiber layer; 42. aluminum magnesium alloy armor; 43. a polyethylene layer.

Detailed Description

The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the present invention is used to usually place, are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, an optical fiber with good cold resistance includes an optical fiber conductor 1, an insulating layer 2 is disposed on an outer surface of the optical fiber conductor 1, a protective layer 3 is disposed on a side of the insulating layer 2 away from the optical fiber conductor 1, a sheath outer layer 4 is disposed on a side of the protective layer 3 away from the insulating layer 2, the sheath outer layer 4 includes a polypropylene fiber layer 41, an aluminum magnesium alloy armor 42 is disposed on a side of the polypropylene fiber layer 41 away from the sheath outer layer 4, and a polyethylene layer 43 is disposed on a side of the aluminum magnesium alloy armor 42 away from the polypropylene fiber layer 41, so that the optical fiber has good cold resistance by disposing the sheath outer layer 4, the optical fiber is ensured to meet the use requirement of a low-temperature environment, and the problem that the optical fiber is inconvenient to use in the low-temperature environment is solved;

the protective layer 3 comprises a metal shielding layer 31, a water blocking cushion layer 32 is arranged on one side of the metal shielding layer 31, which is far away from the protective layer 3, and a braided shielding layer 33 is arranged on one side of the water blocking cushion layer 32, which is far away from the metal shielding layer 31;

the insulating layer 2 is made of silicon rubber, the thickness of the insulating layer 2 is the same as that of the protective layer 3, and the insulating layer 2 is arranged, so that the coating with excellent electrical insulation property has good electrochemical property, thermal property, mechanical property and chemical property, is mostly varnish and also has colored paint, the insulation of the optical fiber conductor 1 is prevented from being corroded by mechanical damage and atmosphere and chemicals, the surface insulation strength is improved, the effects of high temperature resistance and wear resistance are achieved, and the service life of the optical fiber conductor 1 is prolonged;

the outer surface of the optical fiber conductor 1 is adhered to the inner surface of the insulating layer 2, the outer surface of the insulating layer 2 is adhered to the inner surface of the protective layer 3, the outer surface of the protective layer 3 is adhered to the inner surface of the sheath outer layer 4, and the protective layer 3 is arranged to shield external signals of the optical fiber conductor 1 so as to avoid interference on stable transmission of the signals;

optical fiber conductor 1 can be single solid conductor and many solid conductors, optical fiber conductor 1 is the fibre of being made by glass or plastics, through optical fiber conductor 1, insulating layer 2, inoxidizing coating 3 and sheath skin 4's setting, the advantage that cold resistance is good has been reached, the operation requirement that traditional optic fibre is difficult to satisfy strong low temperature environment has been solved, when these optic fibre be in under the strong low ambient temperature condition, the material performance descends, appear the rupture easily, catalysis and ageing wait phenomenon influence life's problem.

During the use, through setting up sheath skin 4, polypropylene fiber layer 41, almag armor 42 and polyethylene layer 43, good cold resistance has, ensure that optic fibre satisfies low temperature environment's operation requirement, the problem of optic fibre not convenient to use in low temperature environment is solved, through setting up insulating layer 2, coating with good electrical insulation nature, it has good electrochemical property, the thermal behavior, mechanical properties and chemical property, mostly be the varnish, also there is the colored lacquer, so as to prevent that optic fibre conductor 1 is insulating to receive mechanical damage and atmosphere, the erosion of chemical, it is strong to improve surface insulation, high temperature resistant and wear-resisting effect has been played, optic fibre conductor 1's life has been increased, through setting up inoxidizing coating 3, metal shielding layer 31, water blocking cushion 32 and woven shield 33, shield optic fibre conductor 1 external signal, avoid interfering signal's stable transmission.

All the components in the document can be customized according to the description of the specification and the attached drawings, the connection relationship and the specific structure between the layers in the document are all made by the prior art, such as by mechanical methods, by adhesives, by various welding methods (the more layers of the double-core cable are overlapped, the better the service performance is, the production process comprises drawing, stranding and cladding, the cladding process comprises extrusion, longitudinal wrapping, lapping and dip coating), no specific description is made, all the components in the document are general standard components or components known by those skilled in the art, and the structure and the principle of the components can be known by technical manuals or conventional experimental methods.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that there are no specific structures but a few objective structures due to the limited character expressions, and that those skilled in the art may make various improvements, decorations or changes without departing from the principle of the utility model or may combine the above technical features in a suitable manner; such modifications, variations, combinations, or adaptations to the utility model using its teachings or may be learned by practice of the utility model.

Claims

1. An optical fiber with good cold resistance comprises an optical fiber conductor (1), and is characterized in that: the surface of optical fiber conductor (1) is provided with insulating layer (2), one side that optical fiber conductor (1) was kept away from in insulating layer (2) is provided with inoxidizing coating (3), one side that insulating layer (2) were kept away from in inoxidizing coating (3) is provided with outer (4) of sheath, outer (4) of sheath include polypropylene fiber layer (41), one side that outer (4) of sheath was kept away from in polypropylene fiber layer (41) is provided with almag armor (42), one side that polypropylene fiber layer (41) were kept away from in almag armor (42) is provided with polyethylene layer (43).

2. The optical fiber of claim 1, wherein the optical fiber has a good cold resistance: the protective layer (3) comprises a metal shielding layer (31), one side, away from the protective layer (3), of the metal shielding layer (31) is provided with a water blocking cushion layer (32), and one side, away from the metal shielding layer (31), of the water blocking cushion layer (32) is provided with a woven shielding layer (33).

3. The optical fiber of claim 1, wherein the optical fiber has a good cold resistance: the insulating layer (2) is made of silicon rubber, and the thickness of the insulating layer (2) is the same as that of the protective layer (3).

4. The optical fiber of claim 1, wherein the optical fiber has a good cold resistance: the outer surface of the optical fiber conductor (1) is adhered to the inner surface of the insulating layer (2), the outer surface of the insulating layer (2) is adhered to the inner surface of the protective layer (3), and the outer surface of the protective layer (3) is adhered to the inner surface of the sheath outer layer (4).

5. The optical fiber of claim 1, wherein the optical fiber has a good cold resistance: the optical fiber conductor (1) can be a single solid conductor or a plurality of solid conductors, and the optical fiber conductor (1) is made of glass or plastic.