CN103646707A - A mining moisture-proof tensile communication cable - Google Patents
A mining moisture-proof tensile communication cable Download PDFInfo
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- CN103646707A CN103646707A CN201310626679.0A CN201310626679A CN103646707A CN 103646707 A CN103646707 A CN 103646707A CN 201310626679 A CN201310626679 A CN 201310626679A CN 103646707 A CN103646707 A CN 103646707A
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Abstract
The invention discloses a mining moisture-proof tensile communication cable. A zinc-coated steel wire steel wire armoring layer is wrapped in a sparse manner. In a basic unit including 25 pairs of wires, all wire pairs have different twisting pitches. The value of the twisting pitch of a finished cable is from 50.3 to 119.53mm. The diameters d of copper conductors are controlled within +/- 0.001mm. The external diameters D of insulating layers are controlled within +/- 0.002mm. The concentricity of the conductors and the insulating layers is controlled to be more than 90 percent. The softness of the conductors is controlled within +/-2 percent. A flame-retardant sheath is provided with uniform and consistent tightness. An aluminum-polyethylene bonding protecting layer and a polyethylene inner protection layer on the surface thereof have a good moisture-isolating and moisture-proof effect. The sparsely-wrapped steel wire armoring layer greatly enhances a tensile effect of the product. The aluminum-polyethylene bonding protecting layer and the sparsely-wrapped steel wire armoring layer achieve a bimetallic multilayer composite shielding effect of the cable and form a electromagnetic shielding body when a high-frequency signal flows through the cable so as to provide a relative complete closed magnetic field for the cable and improve the anti-interference performance and the attenuation performance of the cable.
Description
Technical field
The invention belongs to field of electrical equipment, relate in particular to a kind of mining moistureproof tensile type telecommunication cable.
Background technology
Communication cable for mine is one of auxiliary products of Safety of Coal Mine Production indispensability, communication cable for mine is the transmission medium of the information such as video, data, voice and network, down-hole hazards remote monitoring in all kinds of mining machine electric systems, is bearing the transformation task of all information flows in fixed communications.The telecommunication transmission system being formed by connecting by telecommunication cable extends in all direction, extend to each terminal use as colliery mining face under mine, the information such as call voice, data, image are transported to the opposing party from a side, are the communication blood vessels of coal production dispatch control, down-hole hazards remote monitoring.
For the communication cable for mine of vertical shaft or inclined shaft, the protection against the tide of cable and tension and fire resistance are required highly, environment for use is severe, and product structure is complicated, and it is large that technique meets difficulty, and existing common cable is very difficult meets above-mentioned instructions for use completely.
Summary of the invention
The object of the present invention is to provide a kind of mining moistureproof tensile type telecommunication cable, be intended to solve existing common cable be difficult to meet mine communication cable moistureproof with tension and fire resistance is high and environment for use is severe requirement.
The present invention realizes like this, a mining moistureproof tensile type telecommunication cable, described mining moistureproof tensile type telecommunication cable comprises that copper conductor, insulating barrier, strand are to core, polyester band, aluminum-polyethylene bonding sheath, polythene inner, zinc-coated wire armouring, fire retardant jacket;
Copper conductor skin is surrounded by insulating barrier, two copper conductor core pair twists, every 25 pair twists are twisted into 1 strand to core elementary cell again to line, each strand is surrounded by polyester band to core skin, vertical alclad-polyethylene bonding sheath after 4 elementary cell strandings, on aluminum-polyethylene bonding sheath, extrude polyethylene sheath, at polyethylene protective layer, have zinc-coated wire armouring outward, outermost layer extrudes fire-retardant oversheath;
Described zinc-coated wire armouring adopt dredge around mode; Employing with diameter wire in cable surface spiral winding mode in the same direction, in its whole length, steel wire does not allow joint, the every mutual close-packed arrays of steel wire but do not intersect, can bear the pulling force of cable deadweight, and can prevent that possible mechanical external force from destroying, simultaneously because its steel wire is to a direction rotation, external diameter rounding is tight, whole line body is relatively soft, is convenient to cable and lays with physical features.
In 25 pairs of described base units, the wired strand pitch of institute is not identical, and finished cable twisting pitch value is 50.31～119.53mm; In Cable Construction Design, not collinear to adjacent threads especially to not adopting close pair twist pitch.Adopt different pair twist pitches, the one, make signal in the asynchronism(-nization) of cable internal motion, the 2nd, the probability that similar frequency bands signal occurs in same cable section is reduced, the 3rd, thus make the impedance between cable pair have trickle difference to change signal transmission rate, frequency and amplitude.When technological design, guarantee in 25 pairs of base units wired right twisting pitch different, according to strand, to equipment situation, determine that twisting pitch is from 50.31～119.53mm (totally 25 pitches).
Should be controlled at ± 0.001mm of copper conductor diameter d, and geometric element should be correct; Should be controlled at ± 0.002mm of insulating barrier outer diameter D, and geometric element should be correct; The concentricity of conductor and insulating barrier should be controlled at >=and 90%; Softening should being controlled at ± 2% of conductor; Fire retardant jacket degree of tightness is answered uniformity.
The various structural elements that form telecommunication cable are consistent as far as possible, to guarantee impedance uniformity.But in the course of processing 100% be unanimously a kind of perfect condition, consistent as much as possible for guaranteeing, need to control effectively at the links of processing.During as copper conductor wire drawing, conductor diameter need be controlled at nominal diameter ± 0.001mm in; When insulation extrusion, should will extrude THICKNESS CONTROL in insulation nominal thickness ± 0.002mm, and should note extruding deviation, make concentricity >=90% of conductor and insulating barrier; Conductor annealing time should be noted parameters, the elongation difference of whole conductors of applying on identical product is controlled at ± 2% within.The whole serviceability of guarantee product like this.
Further, when stranding, will adjust laying tension, and guarantee that this tension force is greater than the prestressing force in line group, the imbalance between each tension force should be less than or equal to 2N.
Further, described aluminum-polyethylene bonding sheath should adopt vertical job contract skill, and Bing Zongbao lap-joint will overlap a mouthful heat-sealing.
Together with the two-sided aluminum-polyethylene adhesive tape of the present invention pe sheath surperficial with it, good damp proof insulation, moisture effect have been played; Dredge the tension effect that has greatly improved product around wire armoring layer.Simultaneously, two-sided aluminum-polyethylene adhesive tape and the thin bimetallic MULTILAYER COMPOSITE shielding action of bearing again cable around wire armoring layer, dredge around steel wire as ferromagnetic material, form magnetic shielding body, because its unit permeance is very high, the magnetic resistance of shield is very little, thereby the magnetic flux that interference source produces is limited in strong magnetic shield with regard to major part; Aluminium strip, as a kind of diamagnetic material, forms good electrostatic shielding body, makes electric field terminate in the shield surface that it forms.When high-frequency signal passes through, the two forms electromagnetic shield, and the closed magnetic field of comparatively perfect is provided to cable, and this has played very significantly effect for improving cable attenuation performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mining moistureproof tensile type telecommunication cable that provides of the embodiment of the present invention;
In figure: 1, copper conductor; 2, insulating barrier; 3, strand is to core; 4, polyester band; 5, polyester band; 6, aluminum-polyethylene bonding sheath; 7, polythene inner; 8, zinc-coated wire armouring 9, fire retardant jacket.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the structure of mining moistureproof tensile type telecommunication cable of the present invention, as shown in the figure, the present invention is achieved in that a kind of mining moistureproof tensile type telecommunication cable comprises that copper conductor 1, insulating barrier 2, strand are to core 3, polyester band 4, aluminum-polyethylene bonding sheath 6, polythene inner 7, zinc-coated wire armouring 8, fire retardant jacket 9.
Further, described zinc-coated wire armouring 8 adopt dredge around mode;
Further, in 25 pairs of described base units, the wired strand pitch of institute is not identical, and finished cable twisting pitch value is 50.31～119.53mm;
Further, when stranding, will adjust laying tension, and guarantee that this tension force is greater than the prestressing force in line group, the imbalance between each tension force should be less than or equal to 2N;
Further, described aluminum-polyethylene bonding sheath 6 adopts vertical job contract skill, and Bing Zongbao lap-joint will overlap a mouthful heat-sealing;
Further, should be controlled at ± 0.001mm of copper conductor 1 diameter d, and geometric element should be correct; Should be controlled at ± 0.002mm of insulating barrier 2 outer diameter D, and geometric element should be correct; Copper conductor 1 should be controlled at the concentricity of insulating barrier 2 >=and 90%; Softening should being controlled at ± 2% of copper conductor 1; Fire retardant jacket 9 degrees of tightness are answered uniformity.
Together with the aluminum-polyethylene bonding sheath 6 of the present invention polythene inner 7 surperficial with it, good damp proof insulation, moisture effect have been played; Dredge the tension effect that has greatly improved product around wire armoring 8.Simultaneously, aluminum-polyethylene bonding sheath 6 and the thin bimetallic MULTILAYER COMPOSITE shielding action of bearing again cable around wire armoring 8, dredge around steel wire as ferromagnetic material, form magnetic shielding body, because its unit permeance is very high, the magnetic resistance of shield is very little, thereby the magnetic flux that interference source produces is limited in strong magnetic shield with regard to major part; Aluminium strip, as a kind of diamagnetic material, forms good electrostatic shielding body, makes electric field terminate in the shield surface that it forms.When high-frequency signal passes through, the two forms electromagnetic shield, and the closed magnetic field of comparatively perfect is provided to cable, and this has played very significantly effect for improving cable attenuation performance.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that performing creative labour can make or distortion still within protection scope of the present invention.
Claims (6)
1. a mining moistureproof tensile type telecommunication cable, it is characterized in that, described mining moistureproof tensile type telecommunication cable comprises that copper conductor, insulating barrier, strand are to core, polyester band, aluminum-polyethylene bonding sheath, polythene inner, zinc-coated wire armouring, fire retardant jacket;
Copper conductor skin is surrounded by insulating barrier, two copper conductor core pair twists, every 25 pair twists are twisted into 1 strand to core elementary cell again to line, each strand is surrounded by polyester band to core skin, vertical alclad-polyethylene bonding sheath after 4 elementary cell strandings, on aluminum-polyethylene bonding sheath, extrude polyethylene sheath, at polyethylene protective layer, have zinc-coated wire armouring outward, outermost layer extrudes fire-retardant oversheath;
Described zinc-coated wire armouring adopt dredge around mode; In 25 pairs of described base units, the wired strand pitch of institute is not identical, and finished cable twisting pitch value is 50.31～119.53mm; Should be controlled at ± 0.001mm of copper conductor diameter d, and geometric element should be correct; Should be controlled at ± 0.002mm of insulating barrier outer diameter D, and geometric element should be correct; The concentricity of conductor and insulating barrier should be controlled at >=and 90%; Softening should being controlled at ± 2% of conductor; Fire retardant jacket degree of tightness is answered uniformity.
2. mining moistureproof tensile type telecommunication cable as claimed in claim 1, it is characterized in that, described zinc-coated wire armouring adopt dredge around mode be specially: adopt with diameter wire in cable surface spiral winding mode in the same direction, in its whole length, steel wire does not allow joint, the every mutual close-packed arrays of steel wire but do not intersect, can bear the pulling force of cable deadweight, and can prevent that possible mechanical external force from destroying, simultaneously because its steel wire is to a direction rotation, external diameter rounding is tight, whole line body is relatively soft, is convenient to cable and lays with physical features.
3. mining moistureproof tensile type telecommunication cable as claimed in claim 1, it is characterized in that, in Cable Construction Design, not collinear to adjacent threads especially to not adopting close pair twist pitch, adopt different pair twist pitches, the one, make signal in the asynchronism(-nization) of cable internal motion, the 2nd, the probability that similar frequency bands signal occurs in same cable section is reduced, the 3rd, thus make the impedance between cable pair have trickle difference to change signal transmission rate, frequency and amplitude; When technological design, guarantee in 25 pairs of base units wired right twisting pitch different, according to strand, to equipment situation, determine that twisting pitch is from 50.31～119.53mm, totally 25 pitches.
4. mining moistureproof tensile type telecommunication cable as claimed in claim 1, is characterized in that, in the course of processing 100% be unanimously a kind of perfect condition, processing links control effectively; During copper conductor wire drawing, conductor diameter need be controlled at nominal diameter ± 0.001mm in; When insulation extrusion, should will extrude THICKNESS CONTROL in insulation nominal thickness ± 0.002mm, and should note extruding deviation, make concentricity >=90% of conductor and insulating barrier; Conductor annealing time should be noted parameters, the elongation difference of whole conductors of applying on identical product is controlled at ± 2% within.
5. mining moistureproof tensile type telecommunication cable as claimed in claim 1, is characterized in that, when stranding, will adjust laying tension, and guarantees that this tension force is greater than the prestressing force in line group, and the imbalance between each tension force should be less than or equal to 2N.
6. mining moistureproof tensile type telecommunication cable as claimed in claim 1, is characterized in that, described aluminum-polyethylene bonding sheath should adopt vertical job contract skill, and Bing Zongbao lap-joint will overlap a mouthful heat-sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310626679.0A CN103646707A (en) | 2013-12-02 | 2013-12-02 | A mining moisture-proof tensile communication cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310626679.0A CN103646707A (en) | 2013-12-02 | 2013-12-02 | A mining moisture-proof tensile communication cable |
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| CN103646707A true CN103646707A (en) | 2014-03-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469896A (en) * | 2015-12-10 | 2016-04-06 | 成都绿迪科技有限公司 | Communication cable |
| CN106368025A (en) * | 2016-12-01 | 2017-02-01 | 安徽佳和电力钢缆有限责任公司 | Galvanized steel strand for cables |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087807U (en) * | 1991-04-13 | 1991-10-30 | 山东滕州市电缆厂 | Collecting-distributing type instrument signal cable |
| CN201036079Y (en) * | 2007-03-27 | 2008-03-12 | 天津安讯通电缆有限公司 | Multi-pair chromatic circle program controlled cable |
| CN101490770A (en) * | 2006-06-21 | 2009-07-22 | Adc电信公司 | Multi-pair cable with varying lay length |
| CN201413729Y (en) * | 2009-05-13 | 2010-02-24 | 安徽新宇缆业集团有限公司 | Refractory frequency conversion cable for ship |
| CN202307305U (en) * | 2011-11-12 | 2012-07-04 | 淮北市天相电缆有限责任公司 | Mineral communication cable with aluminum-polyethylene bonding sheath and halogen-free low-smoke sheath |
| CN202307307U (en) * | 2011-11-12 | 2012-07-04 | 淮北市天相电缆有限责任公司 | Steel-polyethylene binding sheath wire armoring flame-retardant communication cable used for coal mine |
| CN202307299U (en) * | 2011-11-12 | 2012-07-04 | 淮北市天相电缆有限责任公司 | Steel wire armored halogen-free low-smoke inflaming retarding jacket communication cable for coal mine |
| CN202584911U (en) * | 2012-03-21 | 2012-12-05 | 江苏亨通线缆科技有限公司 | Data cable of broadband and high capacity for local area network |
-
2013
- 2013-12-02 CN CN201310626679.0A patent/CN103646707A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087807U (en) * | 1991-04-13 | 1991-10-30 | 山东滕州市电缆厂 | Collecting-distributing type instrument signal cable |
| CN101490770A (en) * | 2006-06-21 | 2009-07-22 | Adc电信公司 | Multi-pair cable with varying lay length |
| CN201036079Y (en) * | 2007-03-27 | 2008-03-12 | 天津安讯通电缆有限公司 | Multi-pair chromatic circle program controlled cable |
| CN201413729Y (en) * | 2009-05-13 | 2010-02-24 | 安徽新宇缆业集团有限公司 | Refractory frequency conversion cable for ship |
| CN202307305U (en) * | 2011-11-12 | 2012-07-04 | 淮北市天相电缆有限责任公司 | Mineral communication cable with aluminum-polyethylene bonding sheath and halogen-free low-smoke sheath |
| CN202307307U (en) * | 2011-11-12 | 2012-07-04 | 淮北市天相电缆有限责任公司 | Steel-polyethylene binding sheath wire armoring flame-retardant communication cable used for coal mine |
| CN202307299U (en) * | 2011-11-12 | 2012-07-04 | 淮北市天相电缆有限责任公司 | Steel wire armored halogen-free low-smoke inflaming retarding jacket communication cable for coal mine |
| CN202584911U (en) * | 2012-03-21 | 2012-12-05 | 江苏亨通线缆科技有限公司 | Data cable of broadband and high capacity for local area network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469896A (en) * | 2015-12-10 | 2016-04-06 | 成都绿迪科技有限公司 | Communication cable |
| CN106368025A (en) * | 2016-12-01 | 2017-02-01 | 安徽佳和电力钢缆有限责任公司 | Galvanized steel strand for cables |
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Application publication date: 20140319 |
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