CN213958632U - Aluminum-clad PBT (polybutylene terephthalate) tubular optical fiber composite overhead ground wire - Google Patents
Aluminum-clad PBT (polybutylene terephthalate) tubular optical fiber composite overhead ground wire Download PDFInfo
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- CN213958632U CN213958632U CN202022896357.6U CN202022896357U CN213958632U CN 213958632 U CN213958632 U CN 213958632U CN 202022896357 U CN202022896357 U CN 202022896357U CN 213958632 U CN213958632 U CN 213958632U
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Abstract
The utility model discloses an aluminum-clad PBT tubular optical fiber composite overhead ground wire, which comprises a cable core, wherein the cable core comprises a plurality of optical fiber bundle tubes formed by twisting, each optical fiber bundle tube is made of a PBT loose tube and a plurality of optical fibers positioned in the PBT loose tube, the cable core is wrapped with a semi-conductive water-blocking tape, an aluminum pipe is sleeved on the periphery of the semi-conductive water-blocking tape, the outer surface of the aluminum pipe is provided with a twisted wire layer, and the twisted wire layer is formed by twisting a plurality of aluminum alloy monofilaments and aluminum-clad steel monofilaments; the periphery of the stranded wire layer is provided with a glass fiber protective sleeve, the surface of the glass fiber protective sleeve is provided with an organosilane hydrophobic layer, and the surface of the organosilane hydrophobic layer is provided with a silicone oil lubricating layer.
Description
Technical Field
The utility model relates to an optical cable technical field, concretely relates to compound overhead ground wire of aluminium package PBT tubular optical fiber.
Background
The optical fiber communication technology has the advantages of high transmission speed, low loss, strong anti-electromagnetic interference capability, high safety and the like, and becomes a support technology of a power grid information communication backbone network. As carriers of optical fiber communication technology, special power optical cables such as optical fiber composite overhead ground wires (OPGW), all-dielectric self-supporting optical cables (ADSS), and the like are widely used.
The traditional stainless steel type overhead cable adopts a stainless steel optical unit structure, the weight is heavier, electrochemical corrosion is easy to occur between a stainless steel pipe and aluminum-clad steel, and the corrosion resistance of the whole overhead ground wire is poor; moreover, the traditional aerial cable cannot bear higher instantaneous current and has poor lightning stroke resistance effect.
In addition, since the cable is installed outdoors, the cable must withstand harsh environments; particularly, snow is easily accumulated on the optical cable in snowy days, so that the bearing weight of the optical cable is increased, the optical cable is easily damaged, and various performances of the optical cable are reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide an aluminium package PBT tubular optical fiber composite overhead ground wire, this overhead ground wire has better corrosion resistance and higher breaking strength, can bear higher instantaneous current to difficult snow has improved its weatherability and life.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
an aluminum-clad PBT tubular optical fiber composite overhead ground wire comprises a cable core, wherein the cable core comprises a plurality of optical fiber bundle tubes which are formed by twisting, each optical fiber bundle tube is made of a PBT loose tube and a plurality of optical fibers which are positioned in the PBT loose tube, a semi-conductive water-blocking tape is wrapped outside the cable core, an aluminum pipe is sleeved on the periphery of the semi-conductive water-blocking tape, a twisted wire layer is arranged on the outer surface of the aluminum pipe, and the twisted wire layer is formed by twisting a plurality of aluminum alloy monofilaments and aluminum-clad steel monofilaments; the periphery of the stranded wire layer is provided with a glass fiber protective sleeve, the surface of the glass fiber protective sleeve is provided with an organosilane hydrophobic layer, and the surface of the organosilane hydrophobic layer is provided with a silicone oil lubricating layer.
Furthermore, a reinforcing piece is arranged at the center of the cable core.
Furthermore, a layer of gold cloth wrapping tape is arranged between the semi-conductive water blocking tape and the aluminum pipe and matched with the semi-conductive water blocking tape, so that the current-carrying capacity of the whole cable can be improved.
Further, the number of optical fibers in each PBT loose tube is 8.
Further, the number of the optical fiber bundle tubes is 3.
Furthermore, the steel wire adopted by the aluminum-clad steel monofilament is a high-strength quenched steel wire.
Furthermore, the integral breaking force of the overhead ground wire is equal to or greater than 71.8 KN.
Furthermore, the average additional attenuation of the optical fiber of the overhead ground wire is less than or equal to 0.01 dB/km.
The utility model has the advantages that:
the cable core of the overhead ground wire adopts a PBT loose sleeve structure, so that the overhead ground wire is light in weight, small in sag and good in vibration fatigue resistance; due to the design, electrochemical corrosion cannot be generated between the aluminum pipe and the aluminum-clad steel, and the service life of the whole overhead ground wire is prolonged. The semi-conductive water-blocking tape can play a role in blocking water, can homogenize an electric field, can be matched with the gold cloth wrapping tape to form a compact structure, and effectively improves the integral current-carrying capacity of the cable; the aluminum pipe has a large sectional area, can bear high instantaneous current, and improves the lightning stroke resistance effect of the whole overhead ground wire.
The glass fiber protective sleeve is arranged outside the stranded wire layer of the overhead ground wire, so that the compression resistance and the tensile resistance of the whole overhead ground wire can be improved;
the organosilane hydrophobic layer arranged on the surface of the glass fiber protective sleeve in the overhead ground wire can play a good hydrophobic effect, and the silicone oil lubricating layer plays a good lubricating effect; therefore, the organosilane hydrophobic layer is matched with the silicone oil lubricating layer, so that accumulated snow is not easy to adhere to the surface of the overhead ground wire, the accumulated snow can be prevented from damaging the overhead ground wire, and the service life of the overhead ground wire is prolonged.
Drawings
Fig. 1 is the structure schematic diagram of the aluminum-clad PBT tubular optical fiber composite overhead ground wire of the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
In a preferred embodiment of the aluminum-clad PBT tubular optical fiber composite overhead ground wire shown in fig. 1, the overhead ground wire comprises a cable core 1, the cable core 1 comprises 3 twisted optical fiber bundle tubes, each optical fiber bundle tube is made of a PBT loose tube 12 and 8G 652D optical fibers 11 located in the PBT loose tube 12, a reinforcing member 13 is arranged at the center of the cable core 1, and the 3 optical fiber bundle tubes are arranged around the reinforcing member 13; the cable core 1 is wrapped with a semi-conductive water-blocking tape 2, an aluminum pipe 4 is sleeved on the periphery of the semi-conductive water-blocking tape 2, a stranded wire layer 5 is arranged on the outer surface of the aluminum pipe 4, and the stranded wire layer 5 is formed by stranding 2 aluminum alloy monofilaments 52 and 9 aluminum-clad steel monofilaments 51; the periphery of stranded wire layer 5 is equipped with fine protective sheath 6 of glass, and the surface of this fine protective sheath 6 of glass is equipped with organosilane hydrophobic layer 7, and the surface of this organosilane hydrophobic layer 7 is equipped with silicon oil lubricant layer 8.
Furthermore, a layer of gold cloth wrapping tape 3 is arranged between the semi-conductive water blocking tape 2 and the aluminum pipe 4 and matched with the semi-conductive water blocking tape 2, so that the current-carrying capacity of the whole cable can be improved.
The steel wire used for the aluminum-clad steel monofilament 51 is a high-strength quenched steel wire.
The pipe diameter of the optical fiber bundle pipe is 2.0 mm; the extra length of the PBT loose tube is designed to be more than 10 thousandths, so that the extra length of a cable core twisted structure can be ensured to be more than 8 thousandths; the integral breaking force of the ground wire is more than or equal to 71.8 KN. Under the wavelength of 1310nm and 1550nm, the additional attenuation of the optical fiber of the overhead ground wire is less than or equal to 0.01 dB/km.
The cable core 1 of the overhead ground wire adopts a PBT loose sleeve structure, so that the overhead ground wire is light in weight, small in sag and good in vibration fatigue resistance; due to the design that the semiconductive water-blocking tape 2 and the aluminum pipe 4 are arranged outside the cable core 1, and the stranded wire layer 5 is arranged outside the aluminum pipe 4, electrochemical corrosion cannot be generated between the aluminum pipe and the aluminum-clad steel, and the service life of the whole overhead ground wire is prolonged. The semi-conductive water-blocking tape 2 can play a role in blocking water, can homogenize an electric field, can be matched with the gold cloth wrapping tape 3 to form a compact structure, and effectively improves the integral current-carrying capacity of the cable; the aluminum pipe has a large sectional area, can bear high instantaneous current, and improves the lightning stroke resistance effect of the whole overhead ground wire.
The glass fiber protective sleeve 6 is arranged outside the stranded wire layer 5 of the overhead ground wire, so that the compression resistance and the tensile resistance of the whole overhead ground wire can be improved;
the organosilane hydrophobic layer 7 arranged on the surface of the glass fiber protective sleeve 6 in the overhead ground wire in the embodiment can achieve a good hydrophobic effect, and the silicone oil lubricating layer 8 achieves a good lubricating effect; therefore, the organosilane hydrophobic layer 7 is matched with the silicone oil lubricating layer 8, so that accumulated snow is not easy to adhere to the surface of the overhead ground wire, the accumulated snow can be prevented from damaging the overhead ground wire, and the service life of the overhead ground wire is prolonged.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a compound overhead ground wire of PBT tubular optical fiber of aluminium package which characterized in that: the cable comprises a cable core, wherein the cable core comprises a plurality of optical fiber bundle tubes which are twisted, each optical fiber bundle tube is made of a PBT loose tube and a plurality of optical fibers which are positioned in the PBT loose tube, a semi-conductive water-blocking tape is wound outside the cable core, an aluminum pipe is sleeved on the periphery of the semi-conductive water-blocking tape, and the outer surface of the aluminum pipe is provided with a twisted wire layer which is formed by twisting a plurality of aluminum alloy monofilaments and aluminum-coated steel monofilaments; the periphery of the stranded wire layer is provided with a glass fiber protective sleeve, the surface of the glass fiber protective sleeve is provided with an organosilane hydrophobic layer, and the surface of the organosilane hydrophobic layer is provided with a silicone oil lubricating layer.
2. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: and a reinforcing piece is arranged at the central position of the cable core.
3. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: and a layer of gold cloth wrapping tape is also arranged between the semi-conductive water blocking tape and the aluminum pipe.
4. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: the number of optical fibers in each PBT loose tube is 8.
5. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: the number of the optical fiber bundle tubes is 3.
6. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: the steel wire adopted by the aluminum-clad steel monofilament is a high-strength quenched steel wire.
7. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: the integral breaking force of the overhead ground wire is more than or equal to 71.8 KN.
8. The aluminum-clad PBT tubular optical fiber composite overhead ground wire according to claim 1, characterized in that: the average additional attenuation of the optical fiber of the overhead ground wire is less than or equal to 0.01 dB/km.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022896357.6U CN213958632U (en) | 2020-12-04 | 2020-12-04 | Aluminum-clad PBT (polybutylene terephthalate) tubular optical fiber composite overhead ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022896357.6U CN213958632U (en) | 2020-12-04 | 2020-12-04 | Aluminum-clad PBT (polybutylene terephthalate) tubular optical fiber composite overhead ground wire |
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| Publication Number | Publication Date |
|---|---|
| CN213958632U true CN213958632U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022896357.6U Active CN213958632U (en) | 2020-12-04 | 2020-12-04 | Aluminum-clad PBT (polybutylene terephthalate) tubular optical fiber composite overhead ground wire |
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| Country | Link |
|---|---|
| CN (1) | CN213958632U (en) |
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- 2020-12-04 CN CN202022896357.6U patent/CN213958632U/en active Active
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