CN211698304U - High-strength underwater central tube type optical cable - Google Patents
High-strength underwater central tube type optical cable Download PDFInfo
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- CN211698304U CN211698304U CN202020405166.2U CN202020405166U CN211698304U CN 211698304 U CN211698304 U CN 211698304U CN 202020405166 U CN202020405166 U CN 202020405166U CN 211698304 U CN211698304 U CN 211698304U
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- central tube
- optical cable
- stainless steel
- cable
- steel sleeve
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Abstract
The utility model relates to a high strength is central tubular optical cable under water, including central tubular cable core, armor and oversheath, its characterized in that central tubular cable core including stainless steel sleeve and the optical communication unit of suit in stainless steel sleeve, at outer cladding foamed plastic anti-compression layer and the inner sheath of stainless steel sleeve, the outer cladding steel wire armor of inner sheath, at the outer cladding oversheath of steel wire armor. The utility model discloses mechanical strength is good, and resistance to compression and tensile strength are strong to foamed polyolefin material is hollow structure, and density is very little, can produce certain buoyancy in aqueous, alleviates the dead weight of optical cable, thereby reduces the influence of optical cable dead weight to the optical cable, and the difficult deformation that takes place of protection optical cable increases the performance and the life-span of optical cable. And the performance of long-distance transmission of the optical cable is further improved by adopting the ultra-low loss optical fiber.
Description
Technical Field
The utility model relates to a high strength is central tubular optical cable under water belongs to photoelectric communication transmission technical field.
Background
With the rapid development of optical communication, the distribution range of the communication optical cable is wider and denser, and the laying environment and conditions are more complicated and variable. The underwater optical cable is applied to underwater scenes such as rivers, lakes and seas, and the like, and most of the existing underwater optical cables are made of central tubes or layer-stranded cable cores, water blocking tapes, steel wire armoring layers and optical cable sheath layers. With the rapid development of network application, the demand of people on network bandwidth is continuously increased, and the demand of laying optical cables underwater is increasingly increased in a multi-island area or an area needing to cross rivers and lakes. However, the water-blocking performance of the existing underwater optical cable is not strong enough, and the weight of the cable is generally large due to the fact that the underwater optical cable needs steel wire armoring, and the dead weight of the underwater cable can generate unfavorable deformation on the optical cable, so that the service performance and the service life of the underwater optical cable are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to above-mentioned prior art exists provides a high strength central tube formula optical cable under water, and this optical cable is not only mechanical properties excellent, and the performance that blocks water moreover is strong, can reduce the adverse effect of optical cable dead weight in aqueous, and environmental suitability is strong.
The utility model discloses a solve the technical scheme that the problem that the aforesaid provided adopted and be: the cable comprises a central tube type cable core, an armor layer and an outer sheath, and is characterized in that the central tube type cable core comprises a stainless steel sleeve and an optical communication unit sleeved in the stainless steel sleeve, a foam plastic pressure-resistant layer and an inner sheath are coated outside the stainless steel sleeve, a steel wire armor layer is coated outside the inner sheath, and the outer sheath is coated outside the steel wire armor layer.
According to the scheme, the stainless steel sleeve is a seamless welding stainless steel pipe.
According to the scheme, the foamed plastic pressure-resistant layer is a foamed polyolefin pressure-resistant layer.
According to the scheme, the density of the foamed polyolefin layer material is 0.3 to0.7g/cm3The thickness of the single side is 1.0-2.5 mm.
According to the scheme, the stainless steel sleeve is filled with hydrogen-absorbing water-blocking fiber paste.
According to the scheme, the optical communication unit is an optical fiber or an optical fiber ribbon, and the number of optical fiber cores in the stainless steel sleeve is 12-144 cores.
According to the scheme, the armor layer is formed by twisting more than 6 galvanized steel wires or phosphated steel wires.
According to the scheme, the inner sheath is a polyethylene inner sheath, and the outer sheath is a polyethylene outer sheath.
According to the scheme, the optical fiber is an ultra-low loss optical fiber, and the attenuation coefficient after cabling is at 1550nm 0.18 db/km.
The utility model discloses beneficial effect does: 1. the stainless steel sleeve is used for filling water-blocking fiber paste, so that the influence of water on the internal optical fiber can be well isolated, the water-blocking performance of the optical cable is improved, and the compressive and tensile strength of the optical cable is also improved. 2. The foam polyolefin pressure-resistant layer not only has better pressure-resistant performance, but also has small permeability to water vapor and air and low water absorption, and can further enhance the water-blocking effect of the optical cable. And the density of the foamed polyolefin material is 0.3-0.7 g/cm3And large buoyancy can be generated in water, the dead weight of the optical cable is reduced, and therefore the influence of bad deformation generated by the dead weight of the optical cable on the service life of the optical cable is effectively reduced. 3. The optical fiber adopts an ultra-low loss optical fiber, and the attenuation coefficient after cabling is at 1550nm 0.18db/km, thereby being more beneficial to long-distance laying.
Drawings
Fig. 1 is a radial cross-sectional view of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples.
The cable comprises a central tube type cable core, an armor layer and an outer sheath, wherein the central tube type cable core comprises a stainless steel sleeve 3 and an optical communication unit 1 sleeved in the stainless steel sleeve, the stainless steel sleeve is a seamless welding stainless steel tube, and the optical communication unitThe optical fiber is an optical fiber, the number of the optical fiber cores is 24, and the stainless steel sleeve is filled with hydrogen-absorbing water-blocking fiber paste 2. The stainless steel sleeve is sequentially coated with a foamed plastic pressure-resistant layer 4 and an inner sheath 5, the foamed plastic pressure-resistant layer is a foamed polyolefin pressure-resistant layer and is formed by extruding foamed polyolefin, and the expansion degree of foamed polyolefin expansion is controlled to be 50-150%, so that the density of the foamed polyethylene material is 0.4-0.6 g/cm3The tensile elastic modulus of the foamed polyethylene material is 300-700 MPa at the temperature of about 20 ℃, and the thickness of one side of the foamed polyethylene material is 1.5-2.0 mm. The foamed plastic compression-resistant layer is externally coated with an inner sheath, the inner sheath is made of black polyolefin materials, a steel wire armor layer 6 is twisted outside the inner sheath, the armor layer is formed by twisting galvanized steel wires or phosphated steel wires, the armor layer is externally coated with an outer sheath 7, the outer sheath is made of black polyolefin materials, and ultraviolet rays can be absorbed.
Claims (9)
1. A high-strength underwater central tube type optical cable comprises a central tube type cable core, an armor layer and an outer sheath, and is characterized in that the central tube type cable core comprises a stainless steel sleeve and an optical communication unit sleeved in the stainless steel sleeve, a foam plastic pressure-resistant layer and an inner sheath are coated outside the stainless steel sleeve, a steel wire armor layer is coated outside the inner sheath, and the outer sheath is coated outside the steel wire armor layer.
2. A high strength underwater central tube type optical cable as claimed in claim 1, wherein said stainless steel sleeve is a seamless welded stainless steel tube.
3. A high strength submarine optical fiber central tube according to claim 1 or 2, wherein said foam pressure-resistant layer is a foam polyolefin pressure-resistant layer.
4. A high strength underwater optical fiber cable having a central tube as claimed in claim 3, wherein the foamed polyolefin layer has a density of 0.3 to 0.7g/cm3The thickness of the single side is 1.0-2.5 mm.
5. A high strength underwater central tube type optical cable as claimed in claim 1 or 2, wherein said stainless steel sleeve is filled with hydrogen-absorbing water-blocking fiber paste.
6. The high-strength underwater central tube type optical cable according to claim 1 or 2, wherein the optical communication unit is an optical fiber or an optical fiber ribbon, and the number of optical fiber cores in the stainless steel sleeve is 12 to 144.
7. A high strength underwater central tube type optical cable as claimed in claim 1 or 2, wherein said armor layer is formed by twisting 6 or more galvanized steel wires or phosphated steel wires.
8. A high strength submarine central tube cable according to claim 1 or 2, wherein said inner sheath is a polyethylene inner sheath and said outer sheath is a polyethylene outer sheath.
9. A high strength submarine central tube cable according to claim 6, wherein said optical fiber is an ultra-low loss optical fiber and has an attenuation coefficient after cabling of @1550nm 0.18 db/km.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020405166.2U CN211698304U (en) | 2020-03-26 | 2020-03-26 | High-strength underwater central tube type optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020405166.2U CN211698304U (en) | 2020-03-26 | 2020-03-26 | High-strength underwater central tube type optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211698304U true CN211698304U (en) | 2020-10-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020405166.2U Active CN211698304U (en) | 2020-03-26 | 2020-03-26 | High-strength underwater central tube type optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211698304U (en) |
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2020
- 2020-03-26 CN CN202020405166.2U patent/CN211698304U/en active Active
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