CN218446116U - Light-conducting member, optical unit comprising same and photoelectric composite cable comprising optical unit - Google Patents
Light-conducting member, optical unit comprising same and photoelectric composite cable comprising optical unit Download PDFInfo
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- CN218446116U CN218446116U CN202222798547.3U CN202222798547U CN218446116U CN 218446116 U CN218446116 U CN 218446116U CN 202222798547 U CN202222798547 U CN 202222798547U CN 218446116 U CN218446116 U CN 218446116U
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Abstract
The utility model discloses a light conduction spare, including its light unit and the photoelectric composite cable including light unit, light conduction spare include optic fibre and in order to wrap up the banding polytetrafluoroethylene microporous membrane of optic fibre around the mode of package. The light unit includes a sleeve, a first filler, and a light transmitting member having a plurality of them twisted together, the first filler being filled in the sleeve. The photoelectric composite cable comprises an outer sheath, an optical unit, a cable and a second filler, wherein the cable comprises a conductor and an insulating layer, and the cable and the optical unit are twisted together; the second filler is filled in the outer sheath. The utility model discloses a light conduction spare, banded polytetrafluoroethylene microporous membrane can be crooked and around the package in the fragile outside that has the light guide glass fiber of optical waveguide refracting index profile, and the protective layer that forms inseparable parcel carries out the intensification of mechanical properties, and banded polytetrafluoroethylene microporous membrane is high temperature resistant, low temperature resistant, corrosion-resistant, weather-proof and intensity is high moreover, can carry out fine protection to the optical fiber.
Description
Technical Field
The utility model belongs to photoelectric composite cable field, more specifically relates to light conduction spare, including its light unit and the photoelectric composite cable including light unit.
Background
The basic structure of an optical fiber is generally divided into three layers: a core, a cladding, and a coating. The core and the cladding of the optical fiber are made of glasses with different refractive indexes, light enters the optical fiber at a specific incident angle, and total emission occurs between the core and the cladding (because the refractive index of the cladding is slightly lower than that of the core), so that the light can propagate in the optical fiber. The coating layer mainly plays a role in protecting the cladding and the fiber core from being damaged by the outside and simultaneously increasing the flexibility of the optical fiber. The fiber core and the cladding are made of glass materials, so that the fiber core and the cladding cannot be bent and are fragile, and the coating layer plays a role in protecting and prolonging the service life of the optical fiber.
In recent years, with the development of the aerospace industry, the application of optical fiber cables and power cables in the aerospace field is becoming more extensive. The photoelectric composite cable for aerospace is different from a common optical cable or cable, is a main component of aerospace data transmission and image processing, can be matched with communication equipment and image processing equipment on aerospace equipment, and is used for aerospace data transmission and image processing.
The normal working environment temperature of the conventional optical fiber can be between-40 and +60 ℃, and the conventional optical fiber is difficult to meet the requirements of lower temperature or higher temperature and can be used in severe environment influenced by high pressure or external force; the conventional optical cable is generally buried underground, and the material of the conventional optical cable is not high-temperature resistant and is difficult to apply to an environment with higher temperature.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a light conduction spare, including its light unit and the optoelectrical composite cable including light unit, it has high temperature resistant, intensity is high, can also provide power transmission's characteristics for equipment except data transmission, image processing.
To achieve the above object, according to an aspect of the present invention, there is provided a light-transmitting member, comprising:
optical glass fiber having optical waveguide refractive index profile structure and method of making the same
Microporous polytetrafluoroethylene film in tape form, and
the band-shaped polytetrafluoroethylene microporous membrane wraps the optical glass fiber with the optical waveguide refractive index profile structure in a wrapping mode.
Preferably, the band-shaped polytetrafluoroethylene microporous membrane is tightly attached to the optical glass fiber wrapping; or
The optical fiber is characterized by also comprising a coating layer attached to the outer side of the optical glass fiber with the optical waveguide refractive index profile structure, wherein the banded polytetrafluoroethylene microporous membrane is wrapped on the outer side of the coating layer; the coating layer is a homogeneous layer or a composite layer formed by a plurality of homogeneous layers; the coating layer is tightly attached to the homogeneous layer of the optical glass fiber, and the modulus is 1 MPa-1 GPa.
Preferably, the density of the band-shaped polytetrafluoroethylene microporous membrane is 0.5g/cm 3 ～0.8g/cm 3 The width is 0.5 mm-3 mm, the thickness is 25 um-150 um, the average aperture is 0.1 um-10 um, the modulus is 50 MPa-5 GPa, the lapping pitch is 0.5 mm-10 mm, and the lapping overlapping rate is in the range of 0,70%]。
Preferably, the modulus of the coating layer attached to the outer side of the optical fiber with the optical waveguide refractive index profile structure is 1MPa to 100MPa or between the modulus of the inner coating layer and the outer coating layer of the optical fiber, and the coating layer is fluoroplastic;
the density of the banded polytetrafluoroethylene microporous membrane is 0.65g/cm 3 ～0.75g/cm 3 The width is 0.7 mm-2 mm, the wrapping pitch is 1 mm-5 mm, and the overlapping rate is (30%, 60%)]The thickness is 50 um-100 um, the average aperture is 0.3 um-1 um, and the modulus is 1000 MPa-1 GPa.
According to another aspect of the present invention, there is also provided a light unit including a sleeve, a first filler, and the light-transmitting member, the light-transmitting member having a plurality of and being twisted together, all of the light-transmitting members being located in the sleeve, the first filler being filled in the sleeve.
According to another aspect of the utility model, still provide photoelectric composite cable, including oversheath, cable, second filler and the light unit, cable, second filler and light unit all are located in the oversheath, wherein:
the cable comprises a conductor and an insulating layer wrapping the conductor, and the cable and the optical unit are twisted together;
the second filler is filled within the outer jacket.
Preferably, the cable is plural and the cables and the optical units are twisted together.
Preferably, the sleeve is made of soluble polytetrafluoroethylene material.
Preferably, the first filler is aramid fiber, and the second filler is aramid fiber.
Preferably, the insulating layer is made of polytetrafluoroethylene material.
Preferably, the outer sheath is made of a cross-linked polytetrafluoroethylene material.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
1) The utility model discloses a light conduction spare, use light guide glass fiber and banded polytetrafluoroethylene microporous membrane combination together, because banded polytetrafluoroethylene microporous membrane has the micropore, consequently, flexibility, toughness, good intensity and ductility, can carry out the bending and wind the package in the fragile outside that has the light guide glass fiber of optical waveguide refracting index profile promptly bare fiber, the protective layer that forms inseparable parcel carries out mechanical properties's intensification, and banded polytetrafluoroethylene microporous membrane is high temperature resistant, low temperature resistant, corrosion-resistant, weather-proof and intensity is high, can carry out fine protection to the optical fiber.
2) The light unit of the utility model adopts the light conduction piece, and the service life is long.
3) The utility model discloses a photoelectric composite cable adopts optical fiber transmission to carry out high-speed, low time delay, high-quality data transmission, and optic fibre has banded polytetrafluoroethylene microporous membrane protection outward for photoelectric composite cable durable. And the photoelectric composite cable compounds the optical unit for optical fiber transmission and the cable for electric power transmission into one cable, thereby reducing the cost and saving the space. The utility model discloses a photoelectric composite cable, high temperature resistant, intensity is high, bending radius is little, antitorque commentaries on classics nature is good, is applicable to the aerospace field.
Drawings
Fig. 1 is a schematic view of an optical-electrical composite cable according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the light guide member includes an optical glass fiber 3 having a light waveguide refractive index profile structure and a band-shaped polytetrafluoroethylene microporous membrane 5, and the band-shaped polytetrafluoroethylene microporous membrane 5 wraps the optical glass fiber 3 having the light waveguide refractive index profile structure in a wrapping manner, so as to facilitate stripping of the optical glass fiber 3 having the light waveguide refractive index profile structure, the optical glass fiber 3 having the light waveguide refractive index profile structure is a so-called bare fiber, and has a glass fiber core and a glass cladding, and under the conditions of welding, testing and the like, the bare fiber needs to be stripped, and the utility model discloses can not cause the damage of the optical fiber glass part when stripping the bare fiber.
In addition, a coating layer can be arranged on the optical glass fiber 3 with the optical waveguide refractive index profile structure, and the strip-shaped polytetrafluoroethylene microporous membrane 5 is wrapped on the outer side of the coating layer; the coating layer 4 is a homogeneous layer or a composite layer formed by a plurality of homogeneous layers; the coating layer is tightly attached to the homogeneous layer of the optical glass fiber 3. The outer coating layer of the optical glass fiber 3 usually comprises an inner coating layer and an outer coating layer, which can improve the strength and increase the flexibility of the optical glass fiber to make it less suitable for bending. No matter whether have the scheme of coating, all can make around banded polytetrafluoroethylene microporous membrane 5 and after the tight jacket layer of light conduction spare surface preparation, optic fibre and tight jacket layer can be comparatively light separation to can improve the reliability of light conduction spare. Meanwhile, the banded polytetrafluoroethylene microporous membrane has good heat insulation performance, can relieve thermal shock, reduce the deterioration of mechanical performance and optical performance of a light conduction piece caused by severe change of working temperature and avoid the explosion of the optical glass fiber with the optical waveguide refractive index profile structure.
The coating layer is closely attached to the homogeneous layer of the optical glass fiber 3, the modulus is 1 MPa-1 GPa, and the improved modulus is preferably 1 MPa-100 MPa or between the moduli of the optical fiber inner coating and the optical fiber outer coating, which refer to the inner coating of the general optical fiber and the outer coating of the general optical fiber.
In order to improve the mechanical strength and the heat resistance of the optical conduction member at the same time, the coating layer 4 is made of fluoroplastic, which has high heat resistance and flame retardancy, and can well protect the optical glass fiber 3 with the optical waveguide refractive index profile structure together with the band-shaped polytetrafluoroethylene microporous membrane 5, thereby further improving the reliability of the optical conduction member.
The strip-shaped polytetrafluoroethylene microporous membrane 5 is preferably made of a low-density polytetrafluoroethylene material. The density of the banded polytetrafluoroethylene microporous membrane 5 is 0.5g/cm 3 ～0.8g/cm 3 The width is 0.5 mm-3 mm, the thickness is 25 um-150 um, and the average pore diameter is0.1um to 10um, the modulus is between 50MPa to 5GPa, the lapping pitch is between 0.5mm to 10mm, and the overlapping rate is in the range of (0,70%]. The width, the pitch and the overlapping rate jointly influence the stress and the surface form of the bare fiber during wrapping, and the stress on the bare fiber can be reflected in the aspects of attenuation of light transmission, the accuracy of the light sensing technology and the like; the surface morphology, i.e. the flatness of the side faces, affects the mechanical properties, bending properties, etc. of the light-transmitting member. Therefore, the proper width, pitch and overlap ratio are critical to the mechanical and optical performance of the light-conducting member. The preferred tape-shaped polytetrafluoroethylene microporous membrane 5 has a density of 0.65g/cm 3 ～0.75g/cm 3 The width is 0.7 mm-2 mm, the wrapping pitch is 1 mm-5 mm, and the overlapping rate is (30%, 60%)](ii) a Meanwhile, the density and the thickness simultaneously influence the heat preservation performance of the strip polytetrafluoroethylene microporous membrane 5, the thickness simultaneously meets the diameter requirement of the light conduction piece, and the preferred thickness is 50-100 um; the average pore size has obvious influence on the toughness, ductility and flexibility of the strip-shaped polytetrafluoroethylene microporous membrane 5, the preferable average pore size is 0.3-1 um, the smaller the average pore size is, the better the toughness of the strip-shaped polytetrafluoroethylene microporous membrane 5 is, so that good tear resistance is brought, and better mechanical strength is provided; the larger average pore diameter ensures that the banded polytetrafluoroethylene microporous membrane 5 is softer and is easier to form a compact wrapping layer; the modulus of the optical transmission element provided by the embodiment has a more complex effect, the lower modulus is easier to wrap to form a tight wrapping layer, the higher modulus provides better mechanical properties, and for the protection of the bare optical fiber, the two aspects need to be balanced, and the preferred modulus is 1000 MPa-1 GPa.
According to another aspect of the present invention, there is also provided a light unit, including a sleeve 7, a first filler 6 and the light-transmitting member, the light-transmitting member having a plurality of pieces and being twisted together, all the light-transmitting members being located in the sleeve 7, the first filler 6 being filled in the sleeve 7, the first filler 6 being an aramid fiber; the space surrounded by the plurality of light transmitting members is filled with the first filler 6, and the space between the light transmitting members and the sleeve 7 is also filled with the first filler 6. The sleeve 7 is preferably made of soluble polytetrafluoroethylene material, and the optical unit can perform high-speed, low-delay and high-quality data transmission.
According to another aspect of the utility model, still provide photoelectric composite cable, be in including oversheath 9 and common setting light unit, cable and second filler 8 in the oversheath 9, wherein:
the cable comprises a conductor 1 and an insulating layer 2 wrapping the conductor 1, the conductor 1 preferably adopts a silver-plated high-temperature wire, the insulating layer 2 is extruded outside the conductor 1, the insulating layer 2 is preferably made of polytetrafluoroethylene material, more preferably soluble polytetrafluoroethylene material, and the cable and the optical unit are twisted together; the cable may be for power transmission. The cable has a plurality of cables and the optical units are twisted together.
The second filler 8 is filled in the outer sheath 9, the second filler 8 is aramid fiber, and the outer sheath 9 is made of cross-linked polytetrafluoroethylene materials.
The utility model discloses optical glass fiber 3 with optical waveguide refracting index profile structure adopts high temperature resistant fluoroplastics as the coating, adopt banded polytetrafluoroethylene microporous membrane 5 to wind the optical glass fiber 3 that the package has optical waveguide refracting index profile structure as the protective layer outside the coating, strand many light-conducting pieces into the cable core of light unit earlier, extrude soluble polytetrafluoroethylene PFA formation sleeve pipe 7 outside the cable core of light unit again as the protective layer, and adopt aramid fiber to fill as the enhancement layer of light unit in the space of the cable core of light unit and strengthen, then strand light unit and insulating single line into the cable core of photoelectric composite cable, the space of the cable core of photoelectric composite cable also adopts aramid fiber to fill as the reinforcement of photoelectric composite cable, extrude polytetrafluoroethylene as the oversheath 9 of photoelectric composite cable in the cable core outside of photoelectric composite cable at last, through the photoelectric composite cable that above mode formed, optic fibre receives fine protection, and adopted polytetrafluoroethylene material and aramid fiber, high temperature resistance and intensity are high, can be applied to aerospace field.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (11)
1. Light-transmitting member, characterized by comprising:
optical glass fiber (3) having an optical waveguide refractive index profile structure and
a band-shaped polytetrafluoroethylene microporous membrane (5) and
the band-shaped polytetrafluoroethylene microporous membrane (5) wraps the optical glass fiber (3) with the optical waveguide refractive index profile structure in a wrapping mode.
2. A light-transmitting element according to claim 1, characterized in that the tape-shaped polytetrafluoroethylene microporous membrane (5) is wrapped tightly around the optical glass fiber (3); or
The optical fiber is characterized by further comprising a coating layer (4) attached to the outer side of the optical glass fiber (3) with the optical waveguide refractive index profile structure, and the strip-shaped polytetrafluoroethylene microporous membrane (5) is wrapped on the outer side of the coating layer; the coating layer (4) is a uniform layer or a composite layer formed by a plurality of uniform layers; the coating layer (4) is tightly attached to the homogeneous layer of the optical glass fiber (3), and the modulus is 1 MPa-1 GPa.
3. Light conductor according to claim 1 or 2, characterized in that the tape-like microporous polytetrafluoroethylene membrane (5) has a density of 0.5g/cm 3 ～0.8g/cm 3 The width is 0.5 mm-3 mm, the thickness is 25 um-150 um, the average aperture is 0.1 um-10 um, the modulus is 50 MPa-5 GPa, the lapping pitch is 0.5 mm-10 mm, and the lapping overlapping rate is in the range of 0,70%]。
4. The optical transmission element according to claim 3, wherein the coating layer (4) attached to the outer side of the optical glass fiber (3) having the optical waveguide refractive index profile structure has a modulus of 1 to 100MPa or between the moduli of the inner and outer fiber coatings and is a fluoroplastic;
the density of the banded polytetrafluoroethylene microporous membrane (5) is 0.65g/cm 3 ～0.75g/cm 3 The width is 0.7 mm-2 mm, the wrapping pitch is 1 mm-5 mm, and the overlapping rate is (30%, 60%)]The thickness is 50 um-100 um, the average aperture is 0.3 um-1 um, and the modulus is 1000 MPa-1 GPa.
5. Light unit, characterized in that it comprises a sleeve (7), a first filler (6) and a light-conducting element according to any one of claims 1 to 4, said light-conducting element having a plurality of elements and being twisted together, all light-conducting elements being located inside said sleeve (7), said first filler (6) being filled inside said sleeve (7).
6. Opto-electric composite cable, characterized by comprising an outer sheath (9), an electric cable, a second filler (8) and an optical unit according to claim 5, said electric cable, second filler (8) and optical unit being located within said outer sheath (9), wherein:
the cable comprises a conductor (1) and an insulating layer (2) wrapping the conductor (1), and the cable and the optical unit are twisted together;
the second filler (8) is filled in the outer sheath (9).
7. The optical-electrical composite cable according to claim 6, wherein the cable has a plurality of cables and the optical units are twisted together.
8. The optoelectrical composite cable of claim 6, wherein the jacket (7) is made of a soluble polytetrafluoroethylene material.
9. The photoelectric composite cable according to claim 6, wherein the first filler (6) is an aramid fiber and the second filler (8) is an aramid fiber.
10. The optoelectrical composite cable of claim 6, wherein the insulating layer (2) is made of a polytetrafluoroethylene material.
11. The optoelectrical composite cable of claim 6, wherein the outer sheath (9) is made of a cross-linked polytetrafluoroethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222798547.3U CN218446116U (en) | 2022-10-24 | 2022-10-24 | Light-conducting member, optical unit comprising same and photoelectric composite cable comprising optical unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222798547.3U CN218446116U (en) | 2022-10-24 | 2022-10-24 | Light-conducting member, optical unit comprising same and photoelectric composite cable comprising optical unit |
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| Publication Number | Publication Date |
|---|---|
| CN218446116U true CN218446116U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222798547.3U Active CN218446116U (en) | 2022-10-24 | 2022-10-24 | Light-conducting member, optical unit comprising same and photoelectric composite cable comprising optical unit |
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| CN (1) | CN218446116U (en) |
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- 2022-10-24 CN CN202222798547.3U patent/CN218446116U/en active Active
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