CN215494249U - Novel waterproof and moistureproof optical cable - Google Patents
Novel waterproof and moistureproof optical cable Download PDFInfo
- Publication number
- CN215494249U CN215494249U CN202120691704.3U CN202120691704U CN215494249U CN 215494249 U CN215494249 U CN 215494249U CN 202120691704 U CN202120691704 U CN 202120691704U CN 215494249 U CN215494249 U CN 215494249U
- Authority
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- China
- Prior art keywords
- optical cable
- waterproof
- water
- layer
- optical fiber
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 32
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 239000004831 Hot glue Substances 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000013329 compounding Methods 0.000 claims abstract description 3
- 229920006254 polymer film Polymers 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000011521 glass Substances 0.000 description 4
- 239000002674 ointment Substances 0.000 description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
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Abstract
The utility model discloses a novel waterproof and moistureproof optical cable. The optical cable adopts a central beam tube structure and comprises a coated optical fiber, filling factice, a PBT loose tube, a phosphatized steel wire, a hot melt adhesive water-blocking ring, a steel-plastic composite belt, water-blocking glass fiber and a PE sheath. The coated optical fiber is a bending-resistant optical fiber and can be sheathed in a loose sleeve made of PBT material in a single or optical fiber bundle mode. The PBT loose tube is filled with water-swelling water-blocking synthetic factice, and a first layer of waterproof material, a reinforcing structure, a second layer of waterproof material and an outer sheath are arranged outside the loose tube in sequence. The hot melt adhesive water-blocking ring is made of a first layer of waterproof material, and is good in flexibility and large in elasticity. The steel-plastic composite belt is a reinforced structure and is formed by compounding polymer films on two sides of a steel belt. The water-blocking glass fiber is a second layer of waterproof material, and reinforcing metal components are symmetrically arranged around the water-blocking glass fiber. The reinforced metal component is parallel phosphated steel wires, and the outer sheath is a PE sheath. The optical cable is light in weight, convenient to lay and low in cost, has strong waterproof and moistureproof performances, and prolongs the service life of the optical cable. Meanwhile, the reinforced structure ensures that the optical cable has certain strength.
Description
Technical Field
The utility model relates to the field of optical cables, in particular to a novel waterproof and moistureproof optical cable.
Background
The optical cable laying mode is mainly pipeline, direct burial and overhead three. Wherein, the easy ponding of pipeline mode, the direct-burried is located the underground, and the moisture infiltration condition easily appears, and the overhead mode is changeed like the rainwater contact with external environment to lead to the inside optic fibre of optical cable to meet water. The optical fiber inside the optical cable is mostly glass optical fiber, namely, silica material. Glass optical fibers have good water-affinity and are generally considered to be less affected by water. However, after water enters the optical cable, the optical cable is very easy to freeze in cold weather, the optical fiber is generally very thin, and the frozen expansion can damage the optical cable structure and the internal optical fiber. In addition, researches show that the glass optical fiber can be hydrolyzed when meeting water, cracks appear on the surface of the glass optical fiber, the attenuation rate of the optical fiber can be increased when the optical fiber is soaked in water, the light guide rate of the optical fiber is seriously influenced, and the overall performance and the service life of the optical cable are influenced. The improvement of the waterproof performance can greatly improve the service life of the optical cable, so that an important requirement in the design and manufacture of the optical cable is the guarantee of the waterproof and moistureproof performance of the optical fiber.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the waterproof and moistureproof optical cable, which greatly improves the waterproof performance of the optical cable and prolongs the service life of the optical cable.
The utility model comprises an optical fiber and a sheath, and is characterized in that: the waterproof and moistureproof composite belt further comprises a multilayer waterproof and moistureproof part and a reinforcing structure, wherein the multilayer waterproof and moistureproof part comprises filling factice, a hot melt adhesive water-blocking ring and water-blocking glass fiber, and the reinforcing structure comprises a phosphatized steel wire and a steel-plastic composite belt; the optical fiber is a bending-resistant coated optical fiber, and is sleeved in a loose tube made of PBT material in a single or optical fiber bundle mode, and filling ointment is arranged in the loose tube; the loose tube is externally provided with a hot melt adhesive water-blocking ring, a steel-plastic composite belt, a water-blocking glass fiber and an outer sheath in sequence, and two phosphated steel wires are symmetrically arranged around the water-blocking glass fiber.
The outer sheath 8 is a PE sheath.
The utility model has the beneficial effects that: the central beam tube type structure is adopted, so that the device has the characteristics of light weight, convenience in laying and low cost; the waterproof and moistureproof part is enhanced, a three-layer waterproof structure is designed, the waterproof and moistureproof performance is high, and the service life of the optical cable is prolonged; meanwhile, the reinforced structure ensures that the optical cable has certain strength.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure, 1, coating optical fibers, 2, filling factice, 3, a loose tube, 4, phosphatized steel wires, 5, a hot melt adhesive water-blocking ring, 6, a steel-plastic composite belt, 7, water-blocking glass fibers, 8 and an outer sheath.
Detailed Description
The utility model adopts a central beam tube type structure, has the advantages of light weight, small diameter, lower cost and easy laying, and comprises a coated optical fiber 1, filling factice 2, a PBT loose tube 3, a phosphatized steel wire 4, a hot melt adhesive water-blocking ring 5, a steel-plastic composite belt 6, water-blocking glass fiber 7 and a PE sheath 8.
The coated optical fiber 1 is a bending-resistant optical fiber, is convenient for midway transportation and optical fiber laying, and can be sleeved in a loose tube 3 made of PBT (polybutylene terephthalate) in a single or optical fiber bundle mode. The loose tube 3 is internally provided with a filling ointment 2. The filling ointment 2 is a water-swelling and water-blocking synthetic ointment which swells in water, and has the advantages of low cost, moderate viscosity, high water absorption speed and strong water-blocking performance.
The loose tube 3 is externally provided with a first layer of waterproof material, a reinforcing structure, a second layer of waterproof material and an outer sheath in sequence.
The hot melt adhesive water-blocking ring 5 is a first layer of waterproof material, and has good flexibility, large elasticity and good water-blocking property.
The steel-plastic composite belt 6 is of a reinforced structure and is formed by compounding a polymer film on the double surfaces of a steel belt.
The water-blocking glass fiber 7 is a second layer of waterproof material, and contributes to enhancing the waterproof and moistureproof functions.
Two phosphated steel wires 4 are symmetrically arranged around the water-blocking glass fiber 7, and the phosphated steel wires 4 are reinforced metal components.
The outermost outer sheath 8 is a PE sheath.
Claims (9)
1. A novel waterproof and moistureproof optical cable is characterized by comprising: the method comprises the following steps of (1) putting a coated optical fiber into a PBT loose tube by using a central beam tube type structure, filling special factice in the PBT loose tube, and sequentially arranging a first layer of waterproof material, a reinforcing structure and a second layer of waterproof material outside the loose tube; symmetrical reinforcing metal members are placed around the second layer of waterproof material, and the members are wrapped by the outer sheath.
2. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: a central beam tube configuration is used.
3. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: the coated optical fiber is a bending-resistant optical fiber and can be sheathed in a loose sleeve made of PBT material in a single or optical fiber bundle mode.
4. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: the factice filled in the PBT loose tube is water-swelling water-blocking synthetic factice.
5. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: the first layer of waterproof material is a hot melt adhesive water-resistant ring.
6. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: the reinforcing structure is a steel-plastic composite belt which is formed by compounding polymer films on two sides of a steel belt.
7. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: the second layer of waterproof material is water-blocking glass fiber.
8. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: symmetrical reinforcing metal members are arranged around the second layer of waterproof material, and phosphated steel wires are selected as the members.
9. The novel waterproof and moisture-proof optical cable according to claim 1, wherein: the outer sheath is a PE sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120691704.3U CN215494249U (en) | 2021-04-06 | 2021-04-06 | Novel waterproof and moistureproof optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120691704.3U CN215494249U (en) | 2021-04-06 | 2021-04-06 | Novel waterproof and moistureproof optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215494249U true CN215494249U (en) | 2022-01-11 |
Family
ID=79773791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120691704.3U Expired - Fee Related CN215494249U (en) | 2021-04-06 | 2021-04-06 | Novel waterproof and moistureproof optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215494249U (en) |
-
2021
- 2021-04-06 CN CN202120691704.3U patent/CN215494249U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220111 |