CN211858211U - Resistance to compression optical fiber composite low tension cable that blocks water - Google Patents
Resistance to compression optical fiber composite low tension cable that blocks water Download PDFInfo
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- CN211858211U CN211858211U CN202020385854.7U CN202020385854U CN211858211U CN 211858211 U CN211858211 U CN 211858211U CN 202020385854 U CN202020385854 U CN 202020385854U CN 211858211 U CN211858211 U CN 211858211U
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Abstract
The utility model relates to a resistance to compression optical fiber composite low tension cable that blocks water, including layer-stranding photoelectric composite cable core and oversheath, its characterized in that layer-stranding photoelectric composite cable core including set up the pine sleeve pipe that embeds at the middle part has the optical communication unit, at the wire of pine sheathed tube periphery transposition cladding insulating layer, at the outer fire-retardant insulating layer of cladding of layer-stranding photoelectric composite cable core, indulge the package waterproof layer outward fire-retardant insulating layer, the outer cladding of foamed plastic resistance to compression inner sheath of waterproof layer, the outer cladding oversheath of inner sheath. The utility model has the advantages of, set up the optical communication unit in the size that the core layer of cable core can reduce the cable core, make things convenient for the transposition process simultaneously more. The loose tube is made of polyether-ether-ketone material, which can bear high temperature environment for a long time and has good mechanical property to protect the optical fiber. The foamed polyolefin material is of a hollow structure, so that the flexibility of the whole cable can be increased, the compression-resistant flat impact-resistant performance is improved, moisture can be isolated, and the service life of the cable is greatly prolonged.
Description
Technical Field
The utility model relates to a resistance to compression optical fiber composite low tension cable that blocks water belongs to photoelectric transmission technical field.
Background
With the rapid development of optical communication, the optical communication technology is applied more and more widely in the field of power transmission. The optical fiber composite low-voltage cable (OPLC) has the greatest characteristic of combining the functions of optical fiber communication and power transmission, is an ideal scheme for accessing the user side of the smart grid, can save a large amount of resources such as metal, pipelines and plastics, and can effectively reduce the cost of a community and users. The optical fiber composite low-voltage cable (OPLC) can be matched with corresponding equipment and devices to realize various services such as IPTV, Internet access, intelligent home and the like on one transmission line. However, the existing optical fiber composite low-voltage cable is often subjected to application scenes of limited space or irregular space in the laying process, which puts high requirements on the flexibility and the crush resistance of the optical fiber composite low-voltage cable, and the service performance and the service life of the cable are undoubtedly affected by the large residual stress of some optical fiber composite low-voltage cables after laying.
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 resistance to compression optic fibre composite low tension cable that blocks water, and this cable not only possesses stronger photoelectric transport performance, and the structure sets up rationally moreover, and intensity is high, has fine flexibility and resistance to compression ability of blocking water moreover.
The utility model discloses a solve the technical scheme that the problem that the aforesaid provided adopted and be: the cable comprises a layer-stranded photoelectric composite cable core and an outer sheath, and is characterized in that the layer-stranded photoelectric composite cable core comprises a loose tube which is arranged in the middle and is internally provided with a photoelectric communication unit, a lead of a coating insulating layer is stranded on the periphery of the loose tube, a flame-retardant heat-insulating layer is coated outside the layer-stranded photoelectric composite cable core, a waterproof layer is longitudinally coated outside the flame-retardant heat-insulating layer, a foam plastic pressure-resistant inner protective layer is coated outside the waterproof layer, and the outer protective sheath is coated outside the inner protective layer.
According to the scheme, the flame-retardant heat-insulating layer is a mica tape.
According to the scheme, the loose tube is a polyether ether ketone (PEEK) loose tube, and water-blocking fiber paste is filled in the loose tube.
According to the scheme, the foamed plastic compression-resistant inner protection layer is a foamed polyolefin compression-resistant inner protection layer.
According to the scheme, the density of the compression-resistant inner protective layer of the foamed polyolefin is 0.3-0.7 g/cm3The thickness of the single side is 0.5-2.5 mm.
According to the scheme, the conducting wire is a copper conducting wire.
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 loose tube is 4-24.
According to the scheme, the optical fiber is the G657 optical fiber with excellent bending performance.
According to the scheme, the waterproof layer is composed of a water-blocking tape.
According to the scheme, the outer sheath is a low-smoke halogen-free flame-retardant outer sheath.
The utility model has the advantages that: 1. the structure sets up rationally, and the optical communication unit is placed in the external diameter that the core can be reduced in the centre layer, makes the optical communication unit obtain better protection to make things convenient for the transposition process. 2. The loose tube is made of polyether-ether-ketone material, so that the loose tube has strong mechanical property, can resist high temperature for a long time, and effectively protects the optical fiber performance in the tube. 3. The foamed polyolefin material has small permeability to water vapor and air and low water absorption, and can improve the water blocking effect of the optical cable. 4. The foamed polyolefin material is of a hollow structure, so that the flexibility of the whole cable can be increased, and the flattening resistance and the impact resistance of the composite cable can be improved. 5. The optical fiber uses a G657 optical fiber with excellent bending performance, so that the optical fiber is suitable for smaller installation space.
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.
Including layer stranding formula photoelectric composite cable core and oversheath, layer stranding formula photoelectric composite cable core including set up the pine sleeve pipe 3 that is equipped with optical communication unit 1 in the middle part, the pine sleeve pipe be polyether ether ketone (PEEK) pine sleeve pipe, be filled with the fine cream 2 that blocks water in the pine sleeve pipe, optical communication unit be optic fibre, optic fibre be the G657 optic fibre that bending property is excellent, the optical fiber core number in the pine sleeve pipe be 12 cores. The outer periphery of the loose tube is stranded with a layer of conducting wire 4 coated with an insulating layer 5, the conducting wire is stranded with a copper wire 45, the insulating layer is a cross-linked polyethylene sheath, and the layer-stranded photoelectric composite cable core is coated with a flame-retardant heat-insulating layer 6 which is a mica tape. The flame-retardant heat-insulating layer is longitudinally covered with a waterproof layer 7, the waterproof layer is covered with a foamed plastic pressure-resistant inner protection layer 8, the foamed plastic pressure-resistant inner protection layer is a foamed polyolefin pressure-resistant inner protection layer and is formed by extruding foamed polyolefin, the expansion degree of foamed polyolefin is controlled to be 50% -150%, and 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 0.5-2.0 mm. The outer sheath 9 is covered outside the foamed polyolefin pressure-resistant inner protective layer, and the outer sheath is a low-smoke halogen-free flame-retardant outer sheath.
Claims (9)
1. The utility model provides a resistance to compression optical fiber composite low voltage cable that blocks water, including layer-stranding photoelectric composite cable core and oversheath, its characterized in that layer-stranding photoelectric composite cable core including set up at the middle part the pine sleeve pipe that embeds has the optical communication unit, at the wire of pine sheathed tube periphery transposition cladding insulating layer, at the outer fire-retardant insulating layer that coats of layer-stranding photoelectric composite cable core, indulge the package waterproof layer outward fire-retardant insulating layer, the outer foamed plastic resistance to compression inner sheath that coats of waterproof layer, the outer cladding oversheath of inner sheath.
2. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 1, wherein the flame-retardant and heat-insulating layer is a mica tape.
3. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 1 or 2, wherein the loose tube is a polyether-ether-ketone loose tube filled with water-blocking fiber paste.
4. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 1 or 2, wherein the foamed plastic compression-resistant inner sheath is a foamed polyolefin compression-resistant inner sheath.
5. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 4, wherein the density of the foamed polyolefin compression-resistant inner sheath layer is 0.3-0.7 g/cm3The thickness of the single side is 0.5-2.5 mm.
6. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 1 or 2, wherein the conductor is a copper conductor.
7. The compression-resistant water-blocking optical fiber composite low-voltage 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 loose tube is 4-24.
8. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 7, wherein the optical fiber is a G657 optical fiber with excellent bending performance.
9. The compression-resistant water-blocking optical fiber composite low-voltage cable according to claim 1 or 2, characterized in that the waterproof layer is composed of a water-blocking tape, and the outer sheath is a low-smoke halogen-free flame-retardant outer sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020385854.7U CN211858211U (en) | 2020-03-24 | 2020-03-24 | Resistance to compression optical fiber composite low tension cable that blocks water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020385854.7U CN211858211U (en) | 2020-03-24 | 2020-03-24 | Resistance to compression optical fiber composite low tension cable that blocks water |
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| Publication Number | Publication Date |
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| CN211858211U true CN211858211U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020385854.7U Active CN211858211U (en) | 2020-03-24 | 2020-03-24 | Resistance to compression optical fiber composite low tension cable that blocks water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360806A (en) * | 2021-12-09 | 2022-04-15 | 通鼎互联信息股份有限公司 | Durable and water-blocking photoelectric composite cable |
-
2020
- 2020-03-24 CN CN202020385854.7U patent/CN211858211U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114360806A (en) * | 2021-12-09 | 2022-04-15 | 通鼎互联信息股份有限公司 | Durable and water-blocking photoelectric composite cable |
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