CN104166202A - High-performance soft-type cable-carrier optical cable and manufacturing method of high-performance soft-type cable-carrier optical cable - Google Patents
High-performance soft-type cable-carrier optical cable and manufacturing method of high-performance soft-type cable-carrier optical cable Download PDFInfo
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- CN104166202A CN104166202A CN201410442167.3A CN201410442167A CN104166202A CN 104166202 A CN104166202 A CN 104166202A CN 201410442167 A CN201410442167 A CN 201410442167A CN 104166202 A CN104166202 A CN 104166202A
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Abstract
The invention discloses a high-performance soft-type cable-carrier optical cable. A polyurethane protection layer is arranged outside an aramid fiber reinforcing core, a plurality of optical fiber units are contained between the polyurethane protection layer and an inner polyurethane jacket, a polyurethane jacket layer is arranged outside each optical fiber unit, a polyester silk woven layer and an outer polyurethane jacket are sequentially arranged outside the inner polyurethane jacket in a sleeved mode, and each optical fiber unit is sequentially composed of a loose tube, an aramid fiber filling layer and an optical fiber from outside to inside. A manufacturing method of the high-performance soft-type cable-carrier optical cable includes the following steps: rod prefabricating, fiber drawing, secondary coating, optical fiber and aramid fiber stranding, loose tube extruding, cabling, inner jacket extruding, reinforcing layer weaving, outer jacket extruding, finished product inspection, packaging and storing. According to the high-performance soft-type cable-carrier optical cable and the manufacturing method, the reasonable structure is designed, and the reasonable manufacturing process is made, so that the good optical signal transmission performance is guaranteed, the bending performance, the tensile performance and the twisting resistance of the cable can be further guaranteed, and the service life of the cable is prolonged.
Description
Technical field
The invention belongs to harbour machinery field, be specifically related to a kind of high-performance flexible type and drag and make optical cable and preparation method thereof.
Background technology
High-performance flexible type drags and makes optical cable is that open air is laid, usually can under severe environmental conditions, use, as: expose to the sun and rain for a long time, the erosion of the natural conditions such as day sudden and violent night is cold, frost and snow is freezing, ultraviolet, ozone, hydraulic performance decline is than comparatively fast, and serviceable life is shorter.
High-performance flexible type drags and makes between the fiber optic cable operating period, and in the situation that ensureing that transmitting optical signal is good, cable must bear stretching resistance, torsion and bent rich tired, causes insulation and sheath material hydraulic performance decline very fast, and optical signal transmission is shorter serviceable life.
High-performance flexible type drags and makes optical cable higher to sheath material requirement, and the tensile strength of cable, resistance to low temperature, ageing-resistant performance, UV resistant etc. performance is relatively all poor.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the invention provides a kind of high-performance flexible type and drag and make optical cable and preparation method thereof.
Technical scheme: a kind of high-performance flexible type drags and makes optical cable, comprise aramid fiber strengthening core, protective polyurethane layer, polyurethane serving, fiber unit, polyurethane sheath, dacron thread braid, polyurethane oversheath, pine sleeve pipe, aramid fiber yarn packed layer and optical fiber, aramid fiber strengthening core is provided with protective polyurethane layer outward, between protective polyurethane layer and polyurethane sheath, comprise multiple fiber units, each fiber unit is provided with polyurethane serving outward, polyurethane sheath overlaps and has dacron thread braid and polyurethane oversheath successively outward, described fiber unit is from outside to inside successively by loose sleeve pipe, aramid fiber yarn packed layer and optical fiber composition.
As optimization: described loose sleeve pipe is high performance polyurethane.
As optimization: described fiber unit is the multimode silicon dioxide that has coat.
High-performance flexible type drags a preparation method who makes optical cable, and extrude → product inspection → packaging is put in storage to comprise the steps: to extrude → weave enhancement Layer → oversheath by stranded → loose extrude → stranding → inner sheath of sleeve pipe of prefabricated rods → wire drawing → secondary coating → optical fiber aramid fiber yarn.
As optimization: described prefabricated rods, by high speed wiredrawing bench, is drawn into optical wand the optical fiber that needs size.
As optimization: the optical fiber surface of described moulding is extruded low-smoke halogen-free polyolefin as clad, extrude screw compression that this layer of low-smoke halogen-free polyolefin adopt than being 1.5:1, length-diameter ratio 25:1.
As optimization: described in the loose shell material extruded be PBT, it is polybutylene terephthalate, before use, to in the oven dry hopper of 120 DEG C, process 1 ~ 2h, prevent process make extrude envelope have bubble situation produce, afterwards, three sections of bosh employings are cooling, one section of water temperature is 60 DEG C, and two sections of water temperatures are 55 DEG C, and three sections is 30 DEG C.
As optimization: described braiding enhancement Layer, note the control of angle of weave,, in the situation that ensureing count, adjust pitch and change angle of weave by mechanical analysis, generally adjusting angle of weave is 40 ~ 50 degree, can fine raising stretch-proof ability; Adopt active tension controller, tension force is controlled at 160N, makes high tenacity polyester fiber silk in the time of braiding, be not easy broken string; Adopt 4 doubling radicals, make the density of high tenacity polyester fiber silk suitable, thereby the adhesive between protecting in having ensured and protecting outward plays humidification.
Beneficial effect: the present invention is applicable to the application scenario of high mechanical stress, mainly applies shore container crane or dragging of track type container gantry crane makes in system.By selecting extraordinary urethane cover material to drag and make cable jacket as high-performance, appropriate design is dragged and is made cable configuration and formulate suitable processing technology, solve to drag and made the every signal transmission issues of optical cable under normal operation circumstances (environment temperature-40 DEG C--80 DEG C), solve the problem that makes the long-term lower life-span of mobile status of optical cable decline of dragging, by designing interior oversheath braiding enhancement Layer structure, improve cable stretch-proof, anti-torsion ability in use, extend the serviceable life of cable, theoretical this cable design of calculating can reach 10 years serviceable life.Become domestically leading level; There is good practical value and promotional value.
Existing dragging makes optical cable shorter general serviceable life, the technology of the present invention is by structure reasonable in design and formulate rational processing technology, has not only ensured that the property of optical signal transmission is optimum, can also ensure bending property, tensile property, the resistance to twisting property of cable, the serviceable life of having improved cable, these improvement comprise optical fiber are twisted together by parallel with aramid fiber yarn, aramid fiber yarn is transferred to in part of the force, protection optical fiber does not in use stress, cabling device is changed to initiatively unwrapping wire design, all optical fiber loose tube structures are stranded in around packing to be not more than the lay ratio of 8 times, ensure that overall cabling structure has good flexibility, selection jacket structure is sheath+dacron thread+outer jacket, the form that protection multilayer structure combines, improve the in use ability of anti-various external force risks of optical fiber, even if optical cable is often dragging, bending occasion, can also ensure that optical fiber has good fade performance.
By selecting high performance polyurethane sheath material, make cable possess good UV resistant, oil resistant, the performance such as low temperature resistant, wear-resisting, improve the usability of cable, the life-span of having improved cable.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is partial structurtes schematic diagram of the present invention;
Fig. 3 is preparation method's schematic flow sheet of the present invention.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment
As shown in Figure 1, a kind of high-performance flexible type drags and makes optical cable, comprise aramid fiber strengthening core 1, protective polyurethane layer 2, polyurethane serving 3, fiber unit 4, polyurethane sheath 5, dacron thread braid 6, polyurethane oversheath 7, pine sleeve pipe 8, aramid fiber yarn packed layer 9 and optical fiber 10, the outer protective polyurethane layer 2 that is provided with of aramid fiber strengthening core 1, between protective polyurethane layer 2 and polyurethane sheath 5, comprise multiple fiber units 4, the outer polyurethane serving 3 that is provided with of each fiber unit 4, the outer cover successively of polyurethane sheath 5 has dacron thread braid 6 and polyurethane oversheath 7, described fiber unit 4 is from outside to inside successively by loose sleeve pipe 8, aramid fiber yarn packed layer 9 and optical fiber 10 form.Pine sleeve pipe 8 is high performance polyurethane.Fiber unit 4 is for there being the multimode silicon dioxide of coat.
High-performance flexible type drags a preparation method who makes optical cable, and extrude → product inspection → packaging is put in storage to comprise the steps: to extrude → weave enhancement Layer → oversheath by stranded → loose extrude → stranding → inner sheath of sleeve pipe of prefabricated rods → wire drawing → secondary coating → optical fiber aramid fiber yarn.
Described prefabricated rods, by high speed wiredrawing bench, is drawn into optical wand the optical fiber that needs size, and optical fiber parameter value arranges in table 1.
Table 1 optical fiber parameter value
Its SMIS/covering concentricity, non-circularity of cladding, non circularity of core are the principal elements that affects optical fiber attenuation, therefore in actual production process, pay close attention to the placement location of prefabricated rods in wire-drawing equipment, can not occur tilting, selecting suitable wortle is to ensure that optical fiber external diameter meets the key of light signal refraction transmission.
The optical fiber surface of moulding is extruded one deck low-smoke halogen-free polyolefin as clad; protection optical fiber is not subject to extraneous damage; extrude the screw compression of this layer of low-smoke halogen-free polyolefin employing than being 1.5:1; length-diameter ratio 25:1; can ensure that material is subject to less shearing force in machine barrel plasticizing process, prevent from causing material to burn and then affecting tensile strength and breaking elongation because of excess Temperature.
The loose shell material of extruding is PBT (polybutylene terephthalate), and PBT material has certain water absorbing properties, before use, in the oven dry hopper of 120 DEG C, process 1 ~ 2h, prevent process make extrude envelope have bubble situation produce.PBT material is also crystal type material, and general processing temperature is controlled between 200 ~ 245 DEG C, by controlling the temperature of tank, carrys out crystallization control, reduces finished product rear sleeve and shrinks, and reduces excess fiber length.We are through multiple authentication, and three sections of bosh employings are cooling, and one section of water temperature is 60 DEG C, and two sections of water temperatures are 55 DEG C, and three sections is 30 DEG C, can well reduce the retraction of material, ensures the excess fiber length after sleeve pipe.
In order to ensure that optical cable has better bending property, we are by loose sleeve pipe and aramid fiber strengthening core and be not less than regular the twisting together of lay ratio of 8 times, can make cable core have on the whole more small-bend radius, and the occasion that is more suitable for dragging back and forth at harbour is used.
Restrictive coating adopts polyurethane material, have good wear-resisting, tensile property.The same easily moisture absorption of polyurethane, using and will thinking highly of 85 DEG C of heating at desiccant dehumidification, dries 3h, can fine guarantee extrusion performance.Polyurethane is after melting, and viscosity is large, can present picture flowing water shape, excess Temperature, and material meeting premature decomposition, extruding outward appearance has minute bubbles, and temperature is too low, and not exclusively, surface is brightless in plasticizing, and possible intensity can not reach index request.The extruder Ge district temperature of controlling well is crucial, and we are through repeatedly proving, and the temperature control of each district the best is in table 2
Table 2 extruder best temperature control table
| Warm area | Screw rod one district | Screw rod 2nd district | Screw rod 3rd district | Screw rod 4th district | Flange | Head | Die sleeve |
| Temperature (DEG C) | 160 | 170 | 180 | 180 | 190 | 185 | 180 |
Braiding enhancement Layer operation, note the control of angle of weave,, in the situation that ensureing count, is adjusted pitch and changes angle of weave by mechanical analysis, and generally adjusting angle of weave is 40 ~ 50 degree, can fine raising stretch-proof ability.Adopt active tension controller, tension force is controlled at 160N, makes high tenacity polyester fiber silk in the time of braiding, be not easy broken string; Adopt 4 doubling radicals, make the density of high tenacity polyester fiber silk suitable, thereby the adhesive between protecting in having ensured and protecting outward plays humidification.
Fiber unit should be used by the similar silica optical fiber by coat and form.In order to ensure the physical dimension of optical fiber: core/covering concentricity, non-circularity of cladding, non circularity of core etc. are the most similar, should use the produced optical fiber of same design, same material and same process with batch product; Optical fiber is product easy to break, in order to ensure the serviceable life of cable, not only will ensure optical fiber security in use, also will improve whole cable flexibility and bendability, and the design of light cellular construction has largely determined such performance; We select, and optical fiber is parallel with aramid fiber yarn to be twisted together, the tensile strength of aramid fiber yarn is very large on the one hand, can ensure in the time having pulling force have aramid fiber to bear external pulling force, aramid fiber is included in around optical fiber on the other hand, can ensure that it is injury-free that light unit is subject to extraneous shock.
Pine sleeve pipe, fiber unit serving adopt insulating material: high performance polyurethane, and performance requirement is: temperature resistant grade must be between-40 DEG C～90 DEG C, the variation that can bear like this day and night temperature also can be used in the winter of the summer of heat and severe cold simultaneously;
Good electric property and excellent mechanical and physical performance; With general elastomeric material ratio, density is less, and weight is lighter, and bending property is better.
Stranded about cable core, the bending property of cable is had to important effect, little 8 times of General Requirements stranding lay ratio, adopt regular stranded, to ensure whole cable bending property and internal stress even action.
In the middle of core, adopting aramid fiber yarn to extrude polyurethane outward fills; Aramid fiber yarn tensile strength is large, extrudes to can be used as to drag after polyurethane to make the main stressed core of optical cable, improves and drags the tensile strength that makes optical cable.
The material of sheath: select high performance polyurethane sheath material, performance requirement is: temperature resistant grade must be between-40 DEG C～90 DEG C, the variation that can bear like this day and night temperature also can be used in the winter of the summer of heat and severe cold simultaneously; Have good UV resistant and ozone resistance, can ensure like this under long-term Exposure to Sunlight environment, sheath can quick aging, the serviceable life of improving cable; Possesses good wet-hot aging performance; Possess good anti-wear performance and good mechanical and physical performance.
The material of braiding enhancement Layer is: high tenacity polyester fiber silk, for improving the tensile strength of whole cable, we are at interior one deck dacron thread braiding enhancement Layer that designs between protecting and protecting outward, the tensile strength of dacron thread is larger, calculates and the actual service condition of product according to theory, and selecting count is 30%, both can not increase external diameter, the tractive force needing can be ensured again, the stress of cable in the time of mobile or twisting states can be eliminated or reduce, the serviceable life of improving cable.
Core cabling process is formulated: in order to ensure the bending property of whole cable, we test, and save the most at last through being not more than 8 times than fixing on.Stressed even on the whole in order to ensure optical fiber, all optical fiber loose tube structures are all centered around around interior packing, to save through twisting together than being surely not more than 8 times.
High-performance flexible type drags and makes cable jacket processing technology formulate the integraty for improving inner sheath, braid and oversheath, selection tubular molding tool protects in extruding, so not only can enhance productivity, can also make has certain gap between core after stranding, improve each optical fiber loose tube resile ability when stressed, extra-high-speed bending property, weaves and the oversheath form that combines by dacron thread, improves overall tensile property.
It is to improve the tensile strength of sheath that operation is strengthened in braiding, at interior one deck braiding enhancement Layer that designs between protecting and protecting outward, material adopts high tenacity polyester fiber silk, this material does not have great elasticity in the time of braiding, and this material has flattening trend while being woven on line, give in our actual production process and brought many troubles; By our tracing observation, adopt suitable tension force control, make high tenacity polyester fiber silk in the time of braiding, be not easy broken string; Adopt suitable doubling radical, make the density of high tenacity polyester fiber silk suitable, thereby the adhesive between protecting in having ensured and protecting outward plays humidification.
For those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
The present invention is applicable to the application scenario of high mechanical stress, mainly applies shore container crane or dragging of track type container gantry crane makes in system.By selecting extraordinary urethane cover material to drag and make cable jacket as high-performance, appropriate design is dragged and is made cable configuration and formulate suitable processing technology, solve to drag and made the every signal transmission issues of optical cable under normal operation circumstances (environment temperature-40 DEG C--80 DEG C), solve the problem that makes the long-term lower life-span of mobile status of optical cable decline of dragging, by designing interior oversheath braiding enhancement Layer structure, improve cable stretch-proof, anti-torsion ability in use, extend the serviceable life of cable, theoretical this cable design of calculating can reach 10 years serviceable life.Become domestically leading level; There is good practical value and promotional value.
Existing dragging makes optical cable shorter general serviceable life, the technology of the present invention is by structure reasonable in design and formulate rational processing technology, has not only ensured that the property of optical signal transmission is optimum, can also ensure bending property, tensile property, the resistance to twisting property of cable, the serviceable life of having improved cable, these improvement comprise optical fiber are twisted together by parallel with aramid fiber yarn, aramid fiber yarn is transferred to in part of the force, protection optical fiber does not in use stress, cabling device is changed to initiatively unwrapping wire design, all optical fiber loose tube structures are stranded in around packing to be not more than the lay ratio of 8 times, ensure that overall cabling structure has good flexibility, selection jacket structure is sheath+dacron thread+outer jacket, the form that protection multilayer structure combines, improve the in use ability of anti-various external force risks of optical fiber, even if optical cable is often dragging, bending occasion, can also ensure that optical fiber has good fade performance.
By selecting high performance polyurethane sheath material, make cable possess good UV resistant, oil resistant, the performance such as low temperature resistant, wear-resisting, improve the usability of cable, the life-span of having improved cable.
Claims (8)
1. a high-performance flexible type drags and makes optical cable, it is characterized in that: comprise aramid fiber strengthening core (1), protective polyurethane layer (2), polyurethane serving (3), fiber unit (4), polyurethane sheath (5), dacron thread braid (6), polyurethane oversheath (7), pine sleeve pipe (8), aramid fiber yarn packed layer (9) and optical fiber (10), the outer protective polyurethane layer (2) that is provided with of described aramid fiber strengthening core (1), between described protective polyurethane layer (2) and polyurethane sheath (5), comprise multiple fiber units (4), the outer polyurethane serving (3) that is provided with of each fiber unit (4), the outer cover successively of described polyurethane sheath (5) has dacron thread braid (6) and polyurethane oversheath (7), described fiber unit (4) is from outside to inside successively by loose sleeve pipe (8), aramid fiber yarn packed layer (9) and optical fiber (10) composition.
2. high-performance flexible type according to claim 1 drags and makes optical cable, it is characterized in that: described loose sleeve pipe (8) is high performance polyurethane.
3. high-performance flexible type according to claim 1 drags and makes optical cable, it is characterized in that: described fiber unit (4) is for there being the multimode silicon dioxide of coat.
4. high-performance flexible type drags a preparation method who makes optical cable, it is characterized in that: extrude → product inspection → packaging is put in storage to comprise the steps: to extrude → weave enhancement Layer → oversheath by stranded → loose extrude → stranding → inner sheath of sleeve pipe of prefabricated rods → wire drawing → secondary coating → optical fiber aramid fiber yarn.
5. high-performance flexible type according to claim 4 drags the preparation method who makes optical cable, it is characterized in that: described prefabricated rods, by high speed wiredrawing bench, is drawn into optical wand the optical fiber that needs size.
6. high-performance flexible type according to claim 4 drags the preparation method who makes optical cable, it is characterized in that: the optical fiber surface of described moulding is extruded low-smoke halogen-free polyolefin as clad, extrude the screw compression of this layer of low-smoke halogen-free polyolefin employing than being 1.5:1, length-diameter ratio 25:1.
7. high-performance flexible type according to claim 4 drags the preparation method who makes optical cable, it is characterized in that: described in the loose shell material extruded be PBT, be polybutylene terephthalate, before use, in the oven dry hopper of 120 DEG C, process 1 ~ 2h, prevent process make extrude envelope have bubble situation produce, afterwards, three sections of bosh employings are cooling, and one section of water temperature is 60 DEG C, two sections of water temperatures are 55 DEG C, and three sections is 30 DEG C.
8. high-performance flexible type according to claim 4 drags the preparation method who makes optical cable, it is characterized in that: described braiding enhancement Layer, note the control of angle of weave, ensureing count in the situation that by mechanical analysis, adjust pitch and change angle of weave, the general angle of weave of adjusting is 40 ~ 50 degree, can fine raising stretch-proof ability; Adopt active tension controller, tension force is controlled at 160N, makes high tenacity polyester fiber silk in the time of braiding, be not easy broken string; Adopt 4 doubling radicals, make the density of high tenacity polyester fiber silk suitable, thereby the adhesive between protecting in having ensured and protecting outward plays humidification.
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| CN104698562B (en) * | 2015-04-07 | 2018-02-06 | 重庆成瑞光电科技有限公司 | The manufacture method of communication remote radio head optical cable, cable and optoelectronic composite cable |
| CN107831577A (en) * | 2015-04-07 | 2018-03-23 | 沈群华 | The manufacture method of communication remote radio head optical cable, cable and optoelectronic composite cable |
| CN108008509A (en) * | 2015-04-07 | 2018-05-08 | 沈群华 | Remote radio head optical cable, cable and optoelectronic composite cable are used in communication |
| CN107450141B (en) * | 2015-04-07 | 2019-06-25 | 友光电线电缆有限公司 | A kind of communication manufacturing method of remote radio head optical cable |
| CN106024174A (en) * | 2016-05-05 | 2016-10-12 | 上海南洋-藤仓电缆有限公司 | Prefabricated photoelectricity composite branch cable |
| CN108614337A (en) * | 2018-06-29 | 2018-10-02 | 浙江龙鹰光电科技有限公司 | A kind of high-flexibility two-layer equation optical cable |
| CN115793168A (en) * | 2023-02-07 | 2023-03-14 | 安徽雷彻科技有限公司 | Method for manufacturing optical fiber conduit containing cladding optical fiber |
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| CN104166202B (en) | 2016-09-07 |
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