CN218099716U - Indoor and outdoor low temperature resistant and compression resistant miniature optical cable - Google Patents
Indoor and outdoor low temperature resistant and compression resistant miniature optical cable Download PDFInfo
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- CN218099716U CN218099716U CN202221850428.1U CN202221850428U CN218099716U CN 218099716 U CN218099716 U CN 218099716U CN 202221850428 U CN202221850428 U CN 202221850428U CN 218099716 U CN218099716 U CN 218099716U
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Abstract
The utility model discloses an indoor outer miniature optical cable of resistance to compression of low temperature, including the light unit, the light unit includes a plurality of optic fibre and parcel outer inner sheath, be provided with the heater strip that extends along the axial in the center of light unit, the heater strip periphery parcel has the heat conduction sponge layer, set up a plurality of optic fibre outside the heat conduction sponge layer, be provided with a plurality of axially extending optic fibre interior positioning groove along circumference equipartition in the surface of heat conduction sponge layer, the radical of optic fibre positioning groove with optic fibre radical matches; the temperature sensing optical fiber and the nonmetal reinforcing part are respectively embedded in the inner sheath, the temperature sensing optical fiber and the nonmetal reinforcing part extend along the axial direction, and the temperature sensing optical fiber and the nonmetal reinforcing part are uniformly distributed along the circumferential direction. The utility model discloses a miniature optical cable of indoor outer low temperature resistant resistance to compression can be applicable to low temperature environment to have more excellent resistance to compression tensile properties, increase optical fiber cable's life.
Description
Technical Field
The utility model relates to a communication facilities especially relates to an optical cable.
Background
With the increase of optical network construction and bandwidth, 5G network construction is becoming more urgent, and the scale of fiber to the home will continue to be popularized. At present, most indoor and outdoor optical cables in the market are often insufficient under severe environment or extremely low temperature environment (40 ℃ or lower), and the optical cables can be ensured to be capable of long-time communication work.
At present, in order to ensure that the optical cable can work for a long time at a low temperature, people often need raw materials with high low-temperature resistance when the optical cable is structurally designed and selected, so that the cost of the optical cable is increased, the material selection is also restricted, and the research and development period of the optical cable is also increased to a certain extent. In addition, when the optical cable is subjected to larger longitudinal pressure, most indoor and outdoor optical cables in the market at present cannot be used, and the phenomenon of fiber breakage or large additional attenuation easily occurs, so that the normal information transmission of the optical fiber is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a miniature optical cable of indoor outer low temperature resistant resistance to compression of unique structure is provided, can be applicable to the low temperature environment to have more excellent resistance to compression tensile properties, increase optical fiber cable's life.
The utility model discloses a solve above-mentioned technical problem and the technical scheme who adopts is:
the indoor and outdoor low-temperature-resistant compression-resistant miniature optical cable comprises an optical unit, wherein the optical unit comprises a plurality of optical fibers and an inner sheath wrapped outside the optical unit, a heating wire extending along the axial direction is arranged at the center of the optical unit, a heat-conducting sponge layer is wrapped on the periphery of the heating wire, the plurality of optical fibers are arranged outside the heat-conducting sponge layer, a plurality of axially-extending optical fiber inner positioning grooves are uniformly arranged on the outer surface of the heat-conducting sponge layer along the circumferential direction, the number of the optical fiber positioning grooves is matched with that of the optical fibers, and the optical fibers are arranged in the optical fiber inner positioning grooves in a circumferentially limited manner;
temperature sensing optic fibre and a nonmetal reinforcement that are equipped with are inlayed respectively in the inner sheath, temperature sensing optic fibre and nonmetal reinforcement extend along the axial, temperature sensing optic fibre and nonmetal reinforcement set up along the circumference equipartition.
Furthermore, the heat conduction sponge layer is a sponge layer absorbing fiber paste.
Furthermore, the volume of the fiber paste absorbed in the heat conduction sponge layer accounts for 40-60%.
Furthermore, a plurality of optical fiber outer positioning grooves are uniformly distributed on the inner wall of the inner sheath along the circumferential direction, the optical fiber outer positioning grooves are matched with the optical fiber inner positioning grooves one by one, and relatively stable optical fiber accommodating space is formed by the optical fiber outer positioning grooves and the optical fiber inner positioning grooves.
Furthermore, the optical fiber inner positioning groove and the optical fiber outer positioning groove are both arc-shaped grooves, and the arc radius of the grooves is 1.5 to 2 times of the diameter of the optical fiber.
Furthermore, the optical cable is sequentially provided with an electric unit, a sponge buffer layer, an optical unit layer, a heat insulation layer and an outer sheath from the center to the outside; the light unit layer comprises a plurality of light units, a plurality of axially extending light unit positioning grooves are uniformly distributed on the outer surface of the sponge buffer layer along the circumferential direction, the number of the light unit positioning grooves is matched with that of the light units, and the light units are arranged in the light unit positioning grooves in a limited manner along the circumferential direction.
Further, the light unit positioning groove is a circular arc-shaped groove, and the circular arc radius thereof is 1.5 to 2 times the diameter of the light unit.
Further, at least 2V-shaped tearing grooves extending along the circumferential direction are arranged on the inner wall of the outer sheath.
Further, the groove depth of the V-shaped tearing groove is 40% -60% of the thickness of the outer sheath.
Further, when the number of the V-shaped tearing grooves is 2, the central angle formed by the V-shaped tearing grooves is 40-80 degrees; when the number of the V-shaped tearing grooves exceeds 2, the tearing grooves are uniformly distributed along the circumference.
The utility model discloses a miniature optical cable of indoor outer low temperature resistant resistance to compression can improve ultra-low temperature environment's adaptability effectively to have more excellent resistance to compression tensile properties, increase optical fiber cable's life.
Compared with the prior art, the utility model, have following advantage:
(1) The utility model discloses a miniature optical cable of indoor outer low temperature resistant resistance to compression adopts the design of the interior sheath unit of unique optic fibre, is less than-40 ℃ or when lower when optic fibre locates ambient temperature, through the regulation and control of light unit self-temperature (by temperature sensing optic fibre, heater strip and heat conduction sponge layer constitute the self-temperature regulation and control structure of the interior sheath unit), improves the ambient temperature of optic fibre, reduces the optical cable to the requirement of raw and other materials when structural design, can adapt to low temperature environment, also reduces the cost of manufacture and the research and development cycle of optical cable.
(2) The heat-conducting sponge layer has an excellent buffering function, so that the optical fiber can obtain excellent longitudinal pressure resistance, and the heating wire can be prevented from being damaged by external force.
(3) The non-metallic strength members of the inner jacket provide the optical fiber with excellent tensile properties.
(4) The optical unit adopts the sponge layer absorbing the fiber paste as a heat transfer medium, so that the optical unit not only can obtain excellent heat transfer performance, but also has excellent buffering performance, can effectively reduce the time of the optical fiber under the extremely low temperature condition, and improves the service life of the optical fiber;
(5) The fiber paste is stored in the sponge layer instead of being directly filled in the optical unit, on one hand, the dryness of the inner protection cavity can be kept, and the optical fiber does not contain or contains a small amount of fiber paste, so that the construction is convenient. On the other hand, when the optical cable is subjected to longitudinal pressure, the stress on the optical fiber can be effectively reduced and the pressure resistance of the optical cable is improved due to the combination of the fiber paste and the sponge layer;
(6) The outer protection adopts the mode that the tearing groove is formed in the inner side, and the optical cable can be stripped from the tearing groove from inside to outside without using tools. The smooth and complete outer surface of the optical cable can be kept, and the construction efficiency can be effectively improved.
Drawings
Fig. 1 is the structural schematic diagram of the optical unit of the indoor and outdoor low temperature and pressure resistant miniature optical cable.
Fig. 2 is the structural schematic diagram of the indoor and outdoor low temperature resistant and pressure resistant miniature optical cable.
In the figure:
1. light unit 101, heating wire
102. Positioning groove in heat-conducting sponge layer 1021 and optical fiber
103. Optical fiber 104 and temperature-sensitive optical fiber
105. Non-metallic reinforcement 106, inner sheath
1061. Optical fiber outer positioning groove 2 and electric unit
3. Sponge buffer layer 301, light unit constant head tank
4. Insulating layer 5 and outer sheath
501. V-shaped tearing groove
Detailed Description
The invention is further described with reference to the following figures and examples.
Fig. 1 and 2 show an indoor and outdoor low-temperature-resistant and pressure-resistant miniature optical cable, which comprises an optical unit 1, wherein the optical unit 1 comprises six optical fibers 103 and an inner sheath 106 wrapped outside, but may also comprise five, seven, eight or other optical fibers; a heating wire 101 extending along the axial direction is arranged in the center of the light unit 1, a heat-conducting sponge layer 102 is wrapped on the periphery of the heating wire 101, the heat-conducting sponge layer 102 is a sponge layer absorbing fiber paste, and the volume proportion of the fiber paste absorbed in the heat-conducting sponge layer 102 is 40% -60% (the heat-conducting effect and the comprehensive performance are optimal at this time, and the volume proportion of the fiber paste can be properly adjusted in consideration of other aspects); the heat-conducting sponge may be in the form of any sponge that absorbs mineral oil, as long as the heat-conducting sponge layer 102 having heat-conducting ability, which can transfer heat from the central heating wire 101 to the outside, and having a buffering effect is obtained.
A plurality of optical fibers 103 are arranged outside the heat-conducting sponge layer 102, and six axially extending optical fiber positioning grooves 1021 are uniformly arranged on the outer surface of the heat-conducting sponge layer 102 along the circumferential direction; when the number of the optical fibers 103 is other numbers, the number of the optical fiber positioning grooves 1021 is matched with the number of the optical fibers 103, and the optical fibers 103 are arranged in the optical fiber positioning grooves 1021 in a circumferentially limited manner, so that the six optical fibers 103 are not easy to move circumferentially to form winding.
The inner sheath 106 is internally embedded with a temperature sensing optical fiber 104 and a non-metal reinforcement 105 respectively, the temperature sensing optical fiber 104 and the non-metal reinforcement 105 extend along the axial direction, and the temperature sensing optical fiber 104 and the non-metal reinforcement 105 are uniformly distributed along the circumferential direction.
The inner wall of the inner sheath 106 is uniformly provided with six optical fiber outer positioning grooves 1061 along the circumferential direction, the optical fiber outer positioning grooves 1061 are matched with the optical fiber inner positioning grooves 1021 one by one, and a relatively stable optical fiber accommodating space is formed by the optical fiber outer positioning grooves 1061 and the optical fiber inner positioning grooves 1021.
The optical fiber inner positioning groove 1021 and the optical fiber outer positioning groove 1061 are both arc-shaped grooves, and the arc radius of the grooves is 1.5 to 2 times of the diameter of the optical fiber. Of course, other conventional cross-sectional shapes of the grooves are possible, as long as they function to restrict circumferential movement of the optical fiber 103.
In the light unit 1, the temperature sensing optical fiber 104 detects the temperature of the light unit 1 in real time, and after the temperature is transmitted to the external processor, the external processor controls the on/off of the control circuit of the heating wire 101 according to a preset threshold value. For example, the preset temperature threshold for opening the heating wire is-40 ℃, and the preset temperature threshold for closing the heating wire is-20 ℃, so that when the temperature detected by the temperature sensing optical fiber 104 in real time is lower than-40 ℃, the processor can open the circuit to enable the heating wire 101 to be electrified and heated, and the heat is conducted to the outside through the heat conduction sponge layer 102; when the temperature sensing optical fiber 104 detects that the temperature is higher than-20 ℃, the circuit is closed to stop heating the heating wire 101, so that the ambient temperature of the optical fiber is always kept at the normal working temperature, and the service life of the optical fiber is prolonged.
After the optical unit of above-mentioned structure has been used to the optical cable, can realize the function of self temperature regulation and control through temperature sensing optic fibre, heater strip and heat conduction sponge layer, improve the ambient temperature of optic fibre, reduce the optical cable to the requirement of raw and other materials when structural design, can adapt to low temperature environment, also reduce the cost of manufacture and the research and development cycle of optical cable. Meanwhile, the heat-conducting sponge layer can provide a good buffering effect, and the longitudinal compression resistance of the optical cable and the optical fiber is improved. Therefore, the optical cable only needs to include the special light unit 1, and belongs to the protection scope of the present invention.
As a specific embodiment of the optical cable, the optical cable is provided with an electric unit 2, a sponge buffer layer 3, an optical unit layer, a heat-insulating layer 4 and an outer sheath 5 from the center to the outside in sequence; the light unit layer has contained six light units 1 (also can set up five, seven or other radical according to the demand) the surface of sponge buffer layer 3 sets up six axial extension's light unit constant head tank 301 along circumference equipartition, when light unit 1 sets up to other radical, the radical of light unit constant head tank 301 with the radical phase-match of light unit 1, 1 circumference of light unit limited set up in light unit constant head tank 301 for six light units 1 are difficult to the circumferential movement and form the winding. The light unit positioning groove 301 is a circular arc groove, and the circular arc radius of the light unit positioning groove is 1.5 to 2 times of the diameter of the light unit; of course, the light unit positioning groove 301 may have other conventional cross-sectional shapes as long as it can restrict the movement of the light unit 1 in the circumferential direction.
The heat-insulating layer 4 is made of polyurethane foam, so that the ambient temperature of the light unit can be maintained to the greatest extent;
the inner wall of the outer sheath 5 is provided with 2V-shaped tearing grooves 501 extending along the circumferential direction. The depth of the V-shaped tearing groove 501 is 40-60% of the thickness of the outer sheath, and the central angle formed by 2V-shaped tearing grooves 501 is 40-80 degrees.
The number of the V-shaped tearing grooves 501 may be 2, and in this case, the V-shaped tearing grooves 501 are arranged in a circumferentially uniform manner.
Therefore, the outer surface of the optical cable can be kept smooth and complete, the optical cable can be easily stripped from inside to outside along the tearing groove 501 without using tools, and the construction efficiency is effectively improved.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a miniature optical cable of indoor outer low temperature resistant resistance to compression, includes the optical unit, the optical unit includes a plurality of optic fibre and parcel inner sheath outside, its characterized in that: a heating wire extending along the axial direction is arranged at the center of the optical unit, a heat-conducting sponge layer wraps the periphery of the heating wire, a plurality of optical fibers are arranged outside the heat-conducting sponge layer, a plurality of optical fiber inner positioning grooves extending along the axial direction are uniformly arranged on the outer surface of the heat-conducting sponge layer along the circumferential direction, the number of the optical fiber positioning grooves is matched with that of the optical fibers, and the optical fibers are arranged in the optical fiber inner positioning grooves in a limited manner along the circumferential direction;
the temperature sensing optical fiber and the nonmetal reinforcing part are respectively embedded in the inner sheath, the temperature sensing optical fiber and the nonmetal reinforcing part extend along the axial direction, and the temperature sensing optical fiber and the nonmetal reinforcing part are uniformly distributed along the circumferential direction.
2. The optical cable of claim 1, wherein: the heat-conducting sponge layer is a sponge layer which absorbs the fiber paste.
3. An optical cable as claimed in claim 2, wherein: the volume of the fiber paste absorbed in the heat-conducting sponge layer accounts for 40-60%.
4. The optical cable of claim 1, wherein: the inner wall of the inner sheath is uniformly provided with a plurality of optical fiber outer positioning grooves along the circumferential direction, the optical fiber outer positioning grooves are matched with the optical fiber inner positioning grooves one by one, and relatively stable optical fiber accommodating space is formed by the optical fiber outer positioning grooves and the optical fiber inner positioning grooves.
5. The optical cable of claim 4, wherein: the optical fiber inner positioning groove and the optical fiber outer positioning groove are both arc-shaped grooves, and the arc radius of the optical fiber inner positioning groove and the arc-shaped groove is 1.5 times to 2 times of the diameter of the optical fiber.
6. An optical cable as claimed in any one of claims 1 to 5, wherein: the optical cable is sequentially provided with an electric unit, a sponge buffer layer, an optical unit layer, a heat insulation layer and an outer sheath from the center to the outside; the light unit layer contains a plurality of light units the surface of sponge buffer layer is provided with a plurality of axially extending light unit constant head tanks along circumference equipartition, the radical of light unit constant head tank with light unit radical phase-match, light unit circumference limited set up in the light unit constant head tank.
7. The optical cable of claim 6, wherein: the light unit positioning groove is an arc-shaped groove, and the arc radius of the light unit positioning groove is 1.5 to 2 times the diameter of the light unit.
8. The optical cable of claim 6, wherein: at least 2V-shaped tearing grooves extending along the circumferential direction are formed in the inner wall of the outer sheath.
9. An optical cable as recited in claim 8, wherein: the groove depth of the V-shaped tearing groove is 40% -60% of the thickness of the outer sheath.
10. The optical cable of claim 8, wherein: when the number of the V-shaped tearing grooves is 2, the central angle formed by the V-shaped tearing grooves is 40-80 degrees; when the number of the V-shaped tearing grooves exceeds 2, the V-shaped tearing grooves are uniformly distributed along the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221850428.1U CN218099716U (en) | 2022-07-18 | 2022-07-18 | Indoor and outdoor low temperature resistant and compression resistant miniature optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221850428.1U CN218099716U (en) | 2022-07-18 | 2022-07-18 | Indoor and outdoor low temperature resistant and compression resistant miniature optical cable |
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| Publication Number | Publication Date |
|---|---|
| CN218099716U true CN218099716U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221850428.1U Active CN218099716U (en) | 2022-07-18 | 2022-07-18 | Indoor and outdoor low temperature resistant and compression resistant miniature optical cable |
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| CN (1) | CN218099716U (en) |
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- 2022-07-18 CN CN202221850428.1U patent/CN218099716U/en active Active
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