CN203396992U - Nonmetallic antifreezing extrusion-prevention drop cable - Google Patents
Nonmetallic antifreezing extrusion-prevention drop cable Download PDFInfo
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- CN203396992U CN203396992U CN201320407713.0U CN201320407713U CN203396992U CN 203396992 U CN203396992 U CN 203396992U CN 201320407713 U CN201320407713 U CN 201320407713U CN 203396992 U CN203396992 U CN 203396992U
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Abstract
A nonmetallic antifreezing extrusion-prevention drop cable relates to a nonmetallic antifreezing drop cable and comprises fibers, fiber paste, loose tubes, a nonmetallic central reinforcing core, a first watertight layer, a reinforcing layer, an inner protective layer, a buffer layer, a second watertight layer, and an outer protective layer. The nonmetal nonmetallic antifreezing extrusion-prevention drop cable comprises 4-6 loose tubes enclosing and twisted with a nonmetallic reinforcing core, and each loose tube has 2-12 core fibers. The loose tubes after being twisted are wrapped up by the first watertight layer, the aramid fiber serves as a reinforcing layer, and the reinforcing layer is extruded by the inner protective layer. The inner protective layer is wrapped up by the buffer layer which is 4-6mm in thickness, and the buffer layer is wrapped up by the second watertight layer. The second watertight layer is wrapped up by the outer protective layer. The nonmetallic antifreezing extrusion-prevention introducing optical cable has certain rebounding space, improves the antifreezing and extrusion-prevention capability of a cable in a steel pipe under icing state, and ensures normal communication of the optical cable.
Description
Technical field
The nonmetal antifreeze anti-extrusion leading in cable of the utility model relates to is a kind of nonmetal antifreeze introducing cable while passing through steel pipe.
Background technology
At present, conventional leading in cable adopts traditional non-metal optical cable structure, and after fiber cable laying, the plug sealings such as spunyarn are used at pipe two ends, but due in the situation that expanding with heat and contract with cold, optical cable material, the expansion coefficient of steel pipe etc. is inconsistent, sealing effectiveness variation after laying a period of time, cause water to penetrate into steel pipe, in conjunction with the climatic environment of the northern area of China, after weather turns cold, pipe internal water accumulation will freezing and expansion.Because traditional non-metallic optical fiber cables elasticity is poor, cannot absorb water and become the volume that expands and increase after ice, therefore, the bulging force of ice will act directly on optical cable, makes optical fiber be subject to even fracture of compressing, causes the generation of optical cable freeze injury obstacle.Although have in when construction optical cable outer wrapping one deck scum rubber, the extruding force being subject to reduce optical cable, its scum rubber when crossing pipeline is easily worn, and safeguards also more difficultly, and effect is very not remarkable yet.Once this type of obstacle occurs, repairing difficulty is large, and release time is long, and the economic loss causing to user and impact are immeasurable, so be necessary to design the actual demand that a kind of product can meet market.
Summary of the invention
The utility model object is the nonmetal antifreeze anti-extrusion leading in cable providing for above-mentioned weak point, be applicable under the environment of outdoor subzero tens degree in the north, in the situation that not changing existing construction method, it will improve the impact of freezing disaster on leading in cable normal operation effectively.
The nonmetal antifreeze anti-extrusion leading in cable of the utility model has certain resilience space, improve the optical cable anti-ice under the state of freezing being through in steel pipe and frozen the ability of extruding, guarantee the proper communication of optical cable, low-smoke non-halogen flame-retardant sheath produces minute quantity noxious material and smog simultaneously, has good environmental performance.
Nonmetal antifreeze anti-extrusion leading in cable takes following scheme to realize:
Nonmetal antifreeze anti-extrusion leading in cable comprises optical fiber, fine cream, loose sleeve pipe, nonmetal center strengthening core, water blocking layer one, enhancement Layer, sheath, cushion, water blocking layer two and outer jacket.
Described nonmetal antifreeze anti-extrusion leading in cable selects 4 ~ 6 loose sleeve pipes stranded around a nonmetal strengthening core, every loose sleeve pipe includes 2 ~ 12 core fibres, after 4 ~ 6 loose sleeve pipes are stranded, be coated with water blocking layer one, be provided with aramid fiber as enhancement Layer, at enhancement Layer, extrude sheath outward.Then the thick cushion of sheath outer cladding 4.0 ~ 6.0mm, and with the coated cushion of water blocking layer two, at water blocking layer two, be wrapped with oversheath.
The method for making of nonmetal antifreeze anti-extrusion leading in cable:
1. 2 ~ 12 optical fiber are installed on fiber placing shaft, by fine tension adjustment to the 0.8 ~ 1N of putting of optical fiber, loose sleeve pipe takeup tension is adjusted to 10 ~ 20 N.
2. adopt cable sheath to mould extruding machine and extrude loose pipe box 2 ~ 12 outer fiber, pine pipe box adopts polybutylene terephthalate (being called for short PBT) is extruded, the special-purpose fine cream of while filled fiber cable and optical fiber, pine sleeve pipe external diameter 1.8 ~ 2.2mm, pine casing wall thickness 0.3 ~ 0.5mm, cable sheath is moulded 250 ℃ ~ 270 ℃ of extruding machine extrusion temperature, and cable sheath is moulded extruding machine speed of production 200 ~ 300m/min, and loose sleeve pipe once remaining length is controlled at 0.4 ~ 2.0 ‰.
3. above-mentioned 4 ~ 6 loose sleeve pipes that are filled with the special-purpose fine cream of optical cable and optical fiber are carried out to SZ around a nonmetal center strengthening core (fiberglass-reinforced plastic lever is called for short FRP) stranded, the greasy for preventing water of filled fiber cable special use simultaneously, vertical bag water blocking layer one, completes stranding cable core.
4. enhancement Layer is selected some aramid fibers; Use sheath extrusion die, adjust die location, at mould not core shift in the situation that, aramid fiber is evenly stranded on stranding cable core, form enhancement Layer, enter again sheath mould, at optical cable core with enhancement Layer extrudes polyethylene sheath material outward or thermoplastic low-smoke halide-free polyolefin jacket material is done sheath.
5. the optical cable of finishing sheath is utilized to longitudinally coated one deck cushion of mould, indulge bag water blocking layer two simultaneously, with optical cable sheath plastic extruding machine, extrude polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material is done outer jacket, cable jacket extrusion temperature is 150 ℃ ~ 260 ℃, after sheathing, adopt double-deck bosh to carry out cooling, finally complete the production of the nonmetal antifreeze anti-extrusion leading in cable of finished product.
6. each production link of pair above-mentioned nonmetal antifreeze anti-extrusion leading in cable carries out the Performance Detection such as optical fiber attenuation, peeling force, length and stripping, after qualified by optical cable on treucher, finished cable Optical Fiber Transmission performance need meet the decay of standard GB/T9771.3 optical fibre in optical cable G652:1310nm≤0.36dB/km, 1550 nm≤0.22dB/km, and cable machinery performance and environmental performance need meet YD/T 901-2009 nonmetal pipeline and introduce cable requirement.
Described water blocking layer one adopts optical cable waterstop.
Described water blocking layer two adopts optical cable waterstop.
Described sheath adopts polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material, guarantees the fire resistance of optical cable, reduces the harm to environment.
Described cushion adopts bipeltate.
Described outer jacket adopts polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material, guarantees the fire resistance of optical cable, reduces the harm to environment.
Described optical fiber adopts G.652D colored optical fiber (whole chromatogram).
Described aramid fiber model is 2840D.
Described loose sleeve pipe adopts polybutylene terephthalate.
Described nonmetal center strengthening core adopts glass fiber reinforced plastics.
Nonmetal antifreeze anti-extrusion leading in cable is reasonable in design, is applicable to completely under the environment of outdoor subzero tens degree in the north, in the situation that not changing existing construction method, can effectively improve freezing evil to introducing the impact of the proper communication of cable.
The nonmetal antifreeze anti-extrusion leading in cable of the utility model has the following advantages:
1, the nonmetal antifreeze anti-extrusion leading in cable of this structure, by good structural design and technology controlling and process, has superior optics, machinery and environmental performance;
2, change the stranded radical of optical cable and central reinforce member size, reduce optical cable core size, simultaneously multiple material water-proof material guarantees that optical cable does not longitudinally seep water;
3, select suitable padded coaming, increase the shrink space of optical cable, improve the anti-ice of optical cable under water freezing state and freeze extrusion capability;
4, aramid fiber or glass fibre yarn, as the design of enhancement Layer, guarantee the pulling force that optical cable bears, and have certain anti-rat simultaneously;
5, thermoplastic low-smoke halide-free polyolefin jacket material sheath has good fire resistance, produces few noxious material and smog, has good environmental performance.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail.
Fig. 1 is nonmetal antifreeze anti-extrusion leading in cable structural representation.
Embodiment
With reference to accompanying drawing 1, nonmetal antifreeze anti-extrusion leading in cable comprises optical fiber 1, fine cream 2, loose sleeve pipe 3, nonmetal center strengthening core 4, water blocking layer 1, enhancement Layer 6, sheath 7, cushion 8, water blocking layer 29 and outer jacket 10.
Described nonmetal antifreeze anti-extrusion leading in cable selects 4 ~ 6 loose sleeve pipes 3 stranded around a nonmetal strengthening core 4, every loose sleeve pipe 3 includes 2 ~ 12 core fibres 1, after 4 ~ 6 loose sleeve pipes 3 are stranded, be coated with water blocking layer 1, be provided with aramid fiber as enhancement Layer 6, outside enhancement Layer 6, extrude sheath 7.Then the thick cushion 8 of sheath 7 outer cladding 4.0 ~ 6.0mm, and with the coated cushion 8 of water blocking layer 29, at water blocking layer 29, be wrapped with outer jacket 10.
The method for making of nonmetal antifreeze anti-extrusion leading in cable:
1. 2 ~ 12 optical fiber 1 are installed on fiber placing shaft, by fine tension adjustment to the 0.8 ~ 1N of putting of optical fiber 1, loose sleeve pipe 3 takeup tensions are adjusted to 10 ~ 20 N.
2. adopt cable sheath to mould extruding machine and extrude loose pipe box 32 ~ 12 optical fiber 1 outsides, pine pipe box 3 adopts polybutylene terephthalate (being called for short PBT) is extruded, fill fine cream 2 and optical fiber 1 simultaneously, pine sleeve pipe 3 external diameter 1.8 ~ 2.2mm, pine sleeve pipe 3 wall thickness 0.3 ~ 0.5mm, cable sheath is moulded 250 ℃ ~ 270 ℃ of extruding machine extrusion temperature, and cable sheath is moulded extruding machine speed of production 200 ~ 300m/min, and loose sleeve pipe 3 once remaining length is controlled at 0.4 ~ 2.0 ‰.
3. above-mentioned 4 ~ 6 loose sleeve pipes 3 that are filled with fine cream 2 and optical fiber 1 are called for short to FRP around a nonmetal center strengthening core 4(fiberglass-reinforced plastic lever) to carry out SZ stranded, the special-purpose greasy for preventing water of filled fiber cable simultaneously, vertical bag water blocking layer 1, completes stranding cable core.
4. enhancement Layer 6 is selected some aramid fibers; Use sheath extrusion die, adjust die location, at mould not core shift in the situation that, aramid fiber is evenly stranded on stranding cable core, form enhancement Layer 6, enter again sheath mould, outside optical cable core and enhancement Layer 6, extrude polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material is done sheath 7.
5. the optical cable of finishing sheath 7 is utilized to longitudinally coated one deck cushion 8 of mould, indulge bag water blocking layer 29 simultaneously, with optical cable sheath plastic extruding machine, extrude polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material is done outer jacket 10, cable jacket extrusion temperature is 150 ℃ ~ 260 ℃, after sheathing, adopt double-deck bosh to carry out cooling, finally complete the production of the nonmetal antifreeze anti-extrusion leading in cable of finished product.
6. each production link of pair above-mentioned nonmetal antifreeze anti-extrusion leading in cable carries out the Performance Detection such as optical fiber attenuation, peeling force, length and stripping, after qualified by optical cable on treucher, finished cable Optical Fiber Transmission performance need meet the decay of standard GB/T9771.3 optical fibre in optical cable G652:1310nm≤0.36dB/km, 1550 nm≤0.22dB/km, and cable machinery performance and environmental performance need meet YD/T 901-2009 nonmetal pipeline and introduce cable requirement.
Described water blocking layer one adopts optical cable waterstop.
Described water blocking layer two adopts optical cable waterstop.
Described sheath adopts polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material, guarantees the fire resistance of optical cable, reduces the harm to environment.
Described cushion adopts bipeltate.
Described outer jacket adopts polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material, guarantees the fire resistance of optical cable, reduces the harm to environment.
Described optical fiber adopts G.652D colored optical fiber (whole chromatogram).
Described aramid fiber model is 2840D.
Described loose sleeve pipe adopts polybutylene terephthalate.
Described nonmetal center strengthening core adopts glass fiber reinforced plastics.
Claims (9)
1. a nonmetal antifreeze anti-extrusion leading in cable, is characterized in that: comprise optical fiber, fine cream, loose sleeve pipe, nonmetal center strengthening core, water blocking layer one, enhancement Layer, sheath, cushion, water blocking layer two and outer jacket;
Select 4 ~ 6 loose sleeve pipes stranded around a nonmetal strengthening core, every loose sleeve pipe includes 2 ~ 12 core fibres, after 4 ~ 6 loose sleeve pipes are stranded, be coated with water blocking layer one, be provided with aramid fiber as enhancement Layer, at enhancement Layer, extrude sheath outward, the cushion that sheath outer cladding 4.0 ~ 6.0mm is thick, adopts the coated cushion of water blocking layer two, at water blocking layer two, is wrapped with oversheath.
2. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described water blocking layer one adopts optical cable waterstop; Water blocking layer two adopts optical cable waterstop.
3. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described sheath adopts polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material to extrude into.
4. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described cushion adopts bipeltate.
5. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described sheath adopts polyethylene sheath material or thermoplastic low-smoke halide-free polyolefin jacket material.
6. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described optical fiber adopts G.652D colored optical fiber.
7. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described aramid fiber model is 2840D.
8. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described loose sleeve pipe adopts polybutylene terephthalate.
9. nonmetal antifreeze anti-extrusion leading in cable according to claim 1, is characterized in that: described nonmetal center strengthening core adopts glass fiber reinforced plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320407713.0U CN203396992U (en) | 2013-07-10 | 2013-07-10 | Nonmetallic antifreezing extrusion-prevention drop cable |
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|---|---|---|---|
| CN201320407713.0U CN203396992U (en) | 2013-07-10 | 2013-07-10 | Nonmetallic antifreezing extrusion-prevention drop cable |
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| CN203396992U true CN203396992U (en) | 2014-01-15 |
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| CN201320407713.0U Withdrawn - After Issue CN203396992U (en) | 2013-07-10 | 2013-07-10 | Nonmetallic antifreezing extrusion-prevention drop cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345029A (en) * | 2013-07-10 | 2013-10-09 | 江苏中天科技股份有限公司 | Nonmetal anti-freezing anti-squeezing lead-in optical cable and manufacturing method thereof |
| CN112198604A (en) * | 2020-09-11 | 2021-01-08 | 铜陵市铜都特种线缆有限公司 | Bundled armored optical cable and preparation method thereof |
-
2013
- 2013-07-10 CN CN201320407713.0U patent/CN203396992U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345029A (en) * | 2013-07-10 | 2013-10-09 | 江苏中天科技股份有限公司 | Nonmetal anti-freezing anti-squeezing lead-in optical cable and manufacturing method thereof |
| CN103345029B (en) * | 2013-07-10 | 2015-07-22 | 江苏中天科技股份有限公司 | Nonmetal anti-freezing anti-squeezing lead-in optical cable and manufacturing method thereof |
| CN112198604A (en) * | 2020-09-11 | 2021-01-08 | 铜陵市铜都特种线缆有限公司 | Bundled armored optical cable and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20150722 |
|
| RGAV | Abandon patent right to avoid regrant |