CN104766673A - High strength optical fiber composite low-voltage cable and preparing technology - Google Patents
High strength optical fiber composite low-voltage cable and preparing technology Download PDFInfo
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- CN104766673A CN104766673A CN201510156316.4A CN201510156316A CN104766673A CN 104766673 A CN104766673 A CN 104766673A CN 201510156316 A CN201510156316 A CN 201510156316A CN 104766673 A CN104766673 A CN 104766673A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 229920000742 Cotton Polymers 0.000 claims abstract description 44
- 238000009413 insulation Methods 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 28
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 239000004831 Hot glue Substances 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000012943 hotmelt Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000007751 thermal spraying Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000003044 adaptive effect Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 abstract 10
- 239000002344 surface layer Substances 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention relates to a high strength optical fiber composite low-voltage cable and a preparing technology. The high strength optical fiber composite low-voltage cable comprises at least one optical fiber core, a power line conductive core, an insulation inner layer, a shielding layer, an insulation cotton thread layer, an elastic PVC supporting ring, a flexible conduit protecting layer and an elastic protecting surface layer. The outer surface of the power line conductive core is wrapped with the insulation inner layer. The outer surface of the insulation inner layer is wrapped with the shielding layer. The inner surface of the elastic PVC supporting ring is connected with the shielding layer, and the outer surface of the elastic PVC supporting ring is connected with the flexible conduit protecting layer. The outer surface of the flexible conduit protecting layer is wrapped by the elastic protecting surface layer. The elastic PVC supporting ring comprises a middle core ring and at least one supporting ring. An elastic cushion block is further arranged between the middle core ring and the supporting ring. The optical fiber core is embedded into the elastic cushion block. The preparing technology comprises four steps, namely supporting ring preparing, wire covering, threading and wrapping. According to the high strength optical fiber composite low-voltage cable and the preparing technology, the anti-corrosion performance and the anti-electromagnetic interference performance are strong, low-voltage power supplying and the optical fiber communication are achieved, and meanwhile the adaptive capacity of an optical fiber and a low-voltage conductive wire core in a utilizing environment is improved, and the utilizing safety and the stability are improved.
Description
Technical field
The present invention relates to a kind of high strength optical fiber composite low-pressure cable and preparation technology, belong to optical-fibre communications and power main cable technical field.
Background technology
At present in the popularization along with optical fiber communication technology with universal, fibre circuit erection and area coverage also increasing, because traditional fiber structure is relatively fragile, effectively cannot meet the needs that large area large span is set up at a distance, therefore in order to solve this problem in fibre circuit laying, the current outlet gradually mode that optical fiber cable is combined with general distribution cable, meet optical-fibre communications and power supply needs simultaneously, reduce the construction volume of optical fiber and the power line construction of line on the one hand, too increase structural stability when optical fiber sets up at a distance on the other hand, but find in actual use, presently used optical fiber and low-voltage power power combine meet cable in use, because optical fiber structure and low-voltage power supply cable core structure are in tension, difference greatly is all there is in resistance to compression and flexural property, simultaneously optical fiber and low-voltage power line construction of line layout also exist larger different, therefore cause current optical fiber and low-voltage power to be powered combining to meet cable comprehensive strength relatively weak, shock resistance, tension, resistance to corrosion and bending property are all poor, especially fibre circuit part wherein effectively cannot meet the frequent bending of low-voltage supply line and lay the needs used, simultaneously, low-voltage supply line operationally also can produce certain electromagnetic radiation, thus also fiber-optic communication signals is created to the negative effect of increasing, fiber-optic signal is caused to decay serious or clutter is more, have a strong impact on communication quality, therefore for this present situation, in the urgent need to developing a kind of novel optical fiber and low-voltage power supply composite cable special, to overcome the deficiency of current existence, meet the actual needs used.
Summary of the invention
For the deficiency that prior art exists, the invention provides a kind of high strength optical fiber composite low-pressure cable and preparation technology, this structure of the present invention is simple, structural strength is large, resistance to corrosion and anti-electromagnetic interference capability strong, separately there is good shock resistance and resistance to tension, thus effectively meeting while low-voltage power supply and optical-fibre communications synchronously carry out, separately improve optical fiber and low pressure conductor wire core to the adaptive capacity of environment for use and safety in utilization and stability.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of high strength optical fiber composite low-pressure cable, comprise fiber cores, power line conductive cores, inner insulating layer, screen, insulation cotton layer, elasticity PVC support ring, flexible metal conduit overcoat and spring protective top layer, wherein power line conductive cores, inner insulating layer, screen, elasticity PVC support ring, flexible metal conduit overcoat and spring protective top layer all coaxially distribute, insulation cotton layer is coated on fiber cores outer surface, inner insulating layer is coated on power line conductive cores outer surface, screen is coated on inner insulating layer outer surface, elasticity PVC support ring inner surface is connected with screen, outer surface is connected with flexible metal conduit overcoat, spring protective top layer is coated on flexible metal conduit overcoat outer surface, its Elastic PVC support ring comprises SMIS ring and at least one support ring, SMIS ring separately connects by being connected disc with support ring and between support ring with support ring, disc at least three power line conductive cores axis are uniform, SMIS ring and support ring and separately establish elastic cushion block between support ring and support ring, fiber cores at least one is also embedded in elastic cushion block.
Further, described cotton layer by least one cotton thread voluble wrapping at fiber cores outer surface, and cotton layer at least one deck.
Further, when described fiber cores is more than two or two, be then distributed in elastic cushion block around power line conductive cores axis.
The preparation technology of high strength optical fiber composite low-pressure cable, comprises the steps:
The first step, prepares support ring, by the PVC support section of the elasticity PVC support ring of PVC profile extrusion equipment processing preparation designated length, is then filled into by elastic cushion block in PVC support section space, and reserves cable-through hole position on elastic cushion block;
Second step, envelope curve, according to need of production, select the fiber cores of appropriate length and wire diameter, power line conductive cores, and divide utilization insulation cotton thread and inner insulating layer respectively to carry out voluble wrapping to fiber cores and power line conductive cores, and it is another at inner insulating layer outer cladding at least one deck screen, the cotton layer that wherein insulate is at least coated two-layer, and two-layer insulation cotton thread winding direction is contrary, inner insulating layer thickness is not less than 3 millimeters, wherein when carrying out insulation cotton thread and being wound around, when the cotton thread that insulate needs two to dock, then connect root cotton thread length of overlapped part and be not less than 1 centimetre, inner insulating layer utilizes thermal spraying mode to be coated in power line conductive cores,
3rd step, threading, simultaneously by the uniform velocity penetrate into elasticity PVC support ring through the power line conductive cores of cored process centering ring in and elastic cushion block cable-through hole position in, and in threading process, the axis of power line conductive cores, fiber cores axis and elasticity PVC support ring is parallel mutually, and the threading speed of service is 0.5 meter-3 meters per minute;
4th step, coated, carried out by the elasticity PVC support ring flexible metal conduit through threading process coated and fixing, and then carry out coated with spring protective top layer outside flexible metal conduit, wherein spring protective skin depth is not less than 1 millimeter.
Further, in the 3rd described step, when threading, when elasticity PVC support ring length is inadequate, then two-section elasticity PVC support ring can be docked, incision is welded by hot melt, and its inner elastomeric cushion block is reserved cable-through hole position and separately coaxially distributed.
Further, described insulation cotton thread is undertaken bonding with between elastic cushion block by locating colloid.
Further, described and hot-melt adhesive paste between elasticity PVC support ring and flexible metal conduit, and 1/5-1/3 of flexible metal conduit thickness is embedded in the support ring outer surface of elasticity PVC support ring.
Structure of the present invention is simple, structural strength is large, resistance to corrosion and anti-electromagnetic interference capability strong, separately there is good shock resistance and resistance to tension, thus effectively meeting while low-voltage power supply and optical-fibre communications synchronously carry out, separately improve optical fiber and low pressure conductor wire core to the adaptive capacity of environment for use and safety in utilization and stability.
Accompanying drawing explanation
The present invention is described in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is structural representation of the present invention.
Fig. 2 is preparation technology's flow chart of high strength optical fiber composite low-pressure cable in the present invention.
Embodiment
The technological means realized for making the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the present invention further.
A kind of high strength optical fiber composite low-pressure cable as described in Figure 1, comprise fiber cores 1, power line conductive cores 2, inner insulating layer 3, screen 4, insulation cotton layer 5, elasticity PVC support ring 6, flexible metal conduit overcoat 7 and spring protective top layer 8, wherein power line conductive cores 2, inner insulating layer 3, screen 4, elasticity PVC support ring 6, flexible metal conduit overcoat 7 and spring protective top layer 8 all coaxially distribute, insulation cotton layer 3 is coated on fiber cores 1 outer surface, inner insulating layer 3 is coated on power line conductive cores 2 outer surface, screen 4 is coated on inner insulating layer 3 outer surface, elasticity PVC support ring 6 inner surface is connected with screen 4, outer surface is connected with flexible metal conduit overcoat 7, spring protective top layer 7 is coated on flexible metal conduit overcoat 6 outer surface, its Elastic PVC support ring 6 comprises SMIS ring 61 and at least one support ring 62, SMIS ring 61 separately connects by being connected disc 63 with support ring 62 and between support ring 62 with support ring 62, disc 63 at least three power line conductive cores 2 axis are uniform, SMIS ring 61 and support ring 62 and separately establish elastic cushion block 64 between support ring 62 and support ring 62, fiber cores 1 at least one is also embedded in elastic cushion block 64.
In the present embodiment, described cotton layer 5 by least one cotton thread voluble wrapping at fiber cores 1 outer surface, and cotton layer 5 at least one deck.
In the present embodiment, when described fiber cores 1 is more than two or two, be then distributed in elastic cushion block 64 around power line conductive cores 2 axis.
Embodiment 1
As shown in Figure 2, the preparation technology of described high strength optical fiber composite low-pressure cable, comprises the steps:
The first step, prepares support ring, by the PVC support section of the elasticity PVC support ring of PVC profile extrusion equipment processing preparation designated length, is then filled into by elastic cushion block in PVC support section space, and reserves cable-through hole position on elastic cushion block;
Second step, envelope curve, according to need of production, select the fiber cores of appropriate length and wire diameter, power line conductive cores, and divide utilization insulation cotton thread and inner insulating layer respectively to carry out voluble wrapping to fiber cores and power line conductive cores, and it is another at inner insulating layer outer cladding one deck screen, wherein insulate at least coated three layers of cotton layer, and three-layer insulated cotton thread winding direction is contrary, inner insulating layer thickness is 3 millimeters, wherein when carrying out insulation cotton thread and being wound around, when the cotton thread that insulate needs two to dock, then connecting root cotton thread length of overlapped part is 1.5 centimetres, inner insulating layer utilizes thermal spraying mode to be coated in power line conductive cores,
3rd step, threading, simultaneously by the uniform velocity penetrate into elasticity PVC support ring through the power line conductive cores of cored process centering ring in and elastic cushion block cable-through hole position in, and in threading process, the axis of power line conductive cores, fiber cores axis and elasticity PVC support ring is parallel mutually, the threading speed of service is 1 meter per minute, when threading, when elasticity PVC support ring length is inadequate, then two-section elasticity PVC support ring can be docked, incision is welded by hot melt, and its inner elastomeric cushion block is reserved cable-through hole position and separately coaxially distributed.
4th step, coated, carried out by the elasticity PVC support ring flexible metal conduit through threading process coated and fixing, and then carry out coated with spring protective top layer outside flexible metal conduit, wherein spring protective skin depth is 2 millimeters.
In the present embodiment, described insulation cotton thread is undertaken bonding with between elastic cushion block by locating colloid.
In the present embodiment, described and hot-melt adhesive paste between elasticity PVC support ring and flexible metal conduit, and 1/5-1/3 of flexible metal conduit thickness is embedded in the support ring outer surface of elasticity PVC support ring.
Embodiment 2
As shown in Figure 2, the preparation technology of described high strength optical fiber composite low-pressure cable, comprises the steps:
The first step, prepares support ring, by the PVC support section of the elasticity PVC support ring of PVC profile extrusion equipment processing preparation designated length, is then filled into by elastic cushion block in PVC support section space, and reserves cable-through hole position on elastic cushion block;
Second step, envelope curve, according to need of production, select the fiber cores of appropriate length and wire diameter, power line conductive cores, and divide utilization insulation cotton thread and inner insulating layer respectively to carry out voluble wrapping to fiber cores and power line conductive cores, and it is another at inner insulating layer outer cladding one deck screen, wherein insulate at least coated four layers of cotton layer, and four layers of insulation cotton thread winding direction are contrary, inner insulating layer thickness is 3 millimeters, wherein when carrying out insulation cotton thread and being wound around, when the cotton thread that insulate needs two to dock, then connecting root cotton thread length of overlapped part is 2 centimetres, inner insulating layer utilizes thermal spraying mode to be coated in power line conductive cores,
3rd step, threading, simultaneously by the uniform velocity penetrate into elasticity PVC support ring through the power line conductive cores of cored process centering ring in and elastic cushion block cable-through hole position in, and in threading process, the axis of power line conductive cores, fiber cores axis and elasticity PVC support ring is parallel mutually, the threading speed of service is 1.5 meters per minute, when threading, when elasticity PVC support ring length is inadequate, then two-section elasticity PVC support ring can be docked, incision is welded by hot melt, and its inner elastomeric cushion block is reserved cable-through hole position and separately coaxially distributed.
4th step, coated, carried out by the elasticity PVC support ring flexible metal conduit through threading process coated and fixing, and then carry out coated with spring protective top layer outside flexible metal conduit, wherein spring protective skin depth is 3 millimeters.
In the present embodiment, described insulation cotton thread is undertaken bonding with between elastic cushion block by locating colloid.
In the present embodiment, described and hot-melt adhesive paste between elasticity PVC support ring and flexible metal conduit, and 1/5-1/3 of flexible metal conduit thickness is embedded in the support ring outer surface of elasticity PVC support ring.
Structure of the present invention is simple, structural strength is large, resistance to corrosion and anti-electromagnetic interference capability strong, separately there is good shock resistance and resistance to tension, thus effectively meeting while low-voltage power supply and optical-fibre communications synchronously carry out, separately improve optical fiber and low pressure conductor wire core to the adaptive capacity of environment for use and safety in utilization and stability.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (7)
1. a high strength optical fiber composite low-pressure cable, it is characterized in that: described high strength optical fiber composite low-pressure cable comprises fiber cores, power line conductive cores, inner insulating layer, screen, insulation cotton layer, elasticity PVC support ring, flexible metal conduit overcoat and spring protective top layer, wherein said power line conductive cores, inner insulating layer, screen, elasticity PVC support ring, flexible metal conduit overcoat and spring protective top layer all coaxially distribute, described insulation cotton layer is coated on fiber cores outer surface, described inner insulating layer is coated on power line conductive cores outer surface, described screen is coated on inner insulating layer outer surface, described elasticity PVC support ring inner surface is connected with screen, outer surface is connected with flexible metal conduit overcoat, described spring protective top layer is coated on flexible metal conduit overcoat outer surface, wherein said elasticity PVC support ring comprises SMIS ring and at least one support ring, described SMIS ring separately connects by being connected disc with support ring and between support ring with support ring, described disc at least three power line conductive cores axis are uniform, described SMIS ring and support ring and separately establish elastic cushion block between support ring and support ring, described fiber cores at least one is also embedded in elastic cushion block.
2. a kind of high strength optical fiber composite low-pressure cable according to claim 1, is characterized in that, described cotton layer by least one cotton thread voluble wrapping at fiber cores outer surface, and cotton layer at least one deck.
3. a kind of high strength optical fiber composite low-pressure cable according to claim 1, is characterized in that, when described fiber cores is more than two or two, is then distributed in elastic cushion block around power line conductive cores axis.
4. a preparation technology for high strength optical fiber composite low-pressure cable, is characterized in that, the preparation technology of described high strength optical fiber composite low-pressure cable comprises the steps:
The first step, prepares support ring, by the PVC support section of the elasticity PVC support ring of PVC profile extrusion equipment processing preparation designated length, is then filled into by elastic cushion block in PVC support section space, and reserves cable-through hole position on elastic cushion block;
Second step, envelope curve, according to need of production, select the fiber cores of appropriate length and wire diameter, power line conductive cores, and divide utilization insulation cotton thread and inner insulating layer respectively to carry out voluble wrapping to fiber cores and power line conductive cores, and it is another at inner insulating layer outer cladding at least one deck screen, the cotton layer that wherein insulate is at least coated two-layer, and two-layer insulation cotton thread winding direction is contrary, inner insulating layer thickness is not less than 3 millimeters, wherein when carrying out insulation cotton thread and being wound around, when the cotton thread that insulate needs two to dock, then connect root cotton thread length of overlapped part and be not less than 1 centimetre, inner insulating layer utilizes thermal spraying mode to be coated in power line conductive cores,
3rd step, threading, simultaneously by the uniform velocity penetrate into elasticity PVC support ring through the power line conductive cores of cored process centering ring in and elastic cushion block cable-through hole position in, and in threading process, the axis of power line conductive cores, fiber cores axis and elasticity PVC support ring is parallel mutually, and the threading speed of service is 0.5 meter-3 meters per minute;
4th step, coated, carried out by the elasticity PVC support ring flexible metal conduit through threading process coated and fixing, and then carry out coated with spring protective top layer outside flexible metal conduit, wherein spring protective skin depth is not less than 1 millimeter.
5. the preparation technology of the indoor single-core fiber cable of a kind of high strength according to claim 4, it is characterized in that, in the 3rd described step, when threading, when elasticity PVC support ring length is inadequate, then two-section elasticity PVC support ring can be docked, incision is welded by hot melt, and its inner elastomeric cushion block is reserved cable-through hole position and separately coaxially distributed.
6. the preparation technology of the indoor single-core fiber cable of a kind of high strength according to claim 4, it is characterized in that, described insulation cotton thread is undertaken bonding with between elastic cushion block by locating colloid.
7. the preparation technology of the indoor single-core fiber cable of a kind of high strength according to claim 4, it is characterized in that, described and hot-melt adhesive paste between elasticity PVC support ring and flexible metal conduit, and 1/5-1/3 of flexible metal conduit thickness is embedded in the support ring outer surface of elasticity PVC support ring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510156316.4A CN104766673A (en) | 2015-04-03 | 2015-04-03 | High strength optical fiber composite low-voltage cable and preparing technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510156316.4A CN104766673A (en) | 2015-04-03 | 2015-04-03 | High strength optical fiber composite low-voltage cable and preparing technology |
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| CN201510156316.4A Pending CN104766673A (en) | 2015-04-03 | 2015-04-03 | High strength optical fiber composite low-voltage cable and preparing technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107945950A (en) * | 2017-11-24 | 2018-04-20 | 安徽国华电缆集团有限公司 | A kind of computer cable of built-in ventilation shaft |
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Application publication date: 20150708 |
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