CN105261421A - Communication cable - Google Patents
Communication cable Download PDFInfo
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- CN105261421A CN105261421A CN201510828164.8A CN201510828164A CN105261421A CN 105261421 A CN105261421 A CN 105261421A CN 201510828164 A CN201510828164 A CN 201510828164A CN 105261421 A CN105261421 A CN 105261421A
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Abstract
The invention relates to a communication cable, relating to the field of power cables. The communication cable comprises two sets of cable cores, a sleeve layer, a high-temperature resistant layer and an external shielding layer, wherein the cable cores are formed by being stranded with each other. Because of having good flexibility, the communication cable is easy to bend and is suitable for workers to perform a wiring operation in a narrow space; the external shielding layer can prevent external interference signals from interfering communication signals transmitted by the cable cores; an internal shielding layer can prevent mutual interference of the communication signals transmitted by the two sets of cable cores; therefore, the problem that electric equipment cannot be used normally due to high temperature can be prevented; and the communication cable disclosed by the invention is smart in conception, easy to implement and high in generalization performance.
Description
Technical field
The present invention relates to power cable field, in particular to a kind of telecommunication cable.
Background technology
Telecommunication cable is a kind of interfacility link utilizing scalability to carry out work.Be generally used for controlling the electrical connection of movable equipment motion, can rapidly resilience at short notice, be widely used in automobile, machine, in the movable equipments such as instrument.Along with the high speed development of electronic communication technology, the requirement for various telecommunication cable is also more and more higher not only requires that telecommunication cable will possess certain high resiliency, high-wearing feature and flexibility, also should have certain lightweight and anti-interference simultaneously.
Telecommunication cable of the prior art, usually the insulating core being typically employed in cable at the sheath of cable is holding screen, crowded elastic body jacket is held again outside screen, this cable not only overall dimensions is bigger than normal, core between interference still exist, what the insulative core layer of cable adopted usually is PVC insulating barrier, restrictive coating adopts PUR restrictive coating usually, the bendability of such materials for support and flexibility are also poor, be unfavorable for carrying out wiring operation in narrow working space, when running into high temperature, this cable is inflammable, and cause electric equipment not use normally, also may cause the generation of security incident.
Summary of the invention
The object of the present invention is to provide telecommunication cable, to improve above-mentioned problem.
The embodiment of the present invention is achieved in that
A kind of telecommunication cable, comprise two groups by the stranded mutually core unit of two cores, restrictive coating, high-temperature-resistant layer and outer shielding layer, core unit described in two groups is surrounded with the first insulating resin layer and the second insulating resin layer outward respectively, the secant mode coefficient of described first insulating resin layer and described second insulating resin layer is all between 20MPa ~ 30MPa, internal shield is surrounded with outside described second insulating resin layer, described first insulating resin layer and described internal shield are twisted into cable body, described outer shielding layer is paperwrapped in outside described cable body, described high-temperature-resistant layer is paperwrapped in outside described outer shielding layer, described restrictive coating is paperwrapped in outside described high-temperature-resistant layer.
Further, described telecommunication cable also comprises braid, and described braid is paperwrapped in outside described outer shielding layer, and described high-temperature-resistant layer is paperwrapped in outside described braid.
Braid is paperwrapped in outside outer shielding layer, thus constitutes a set of composite shielding layer, and greatly strengthen the interference free performance of this telecommunication cable, Signal transmissions is more stable, and the image of transmission is also more clear.
Further, described telecommunication cable also comprises zinc-plated soft copper overcoat, and described zinc-plated soft copper overcoat is paperwrapped in outside described braid, and described high-temperature-resistant layer is paperwrapped in outside described zinc-plated soft copper overcoat.
Zinc-plated soft copper overcoat interference signal to external world has great shielding, and the signal of communication making core transmit further avoids disturbed.
Further, the insulating resin layer that the copolymer that described first insulating resin layer and described second insulating resin layer are the comonomer utilizing alkene and have polarity is made.
The first insulating resin layer utilizing alkene and the copolymer of the comonomer with polarity to be made and described second insulating resin layer have good flexibility and bendability, and rising of thermal decomposition makes temperature be 300 DEG C, and thus the thermal endurance of this first insulating resin layer and described second insulating resin layer is higher; In addition, easily form carburization zone during burning, carburization zone can completely cut off extraneous air, thus suppresses burning, can realize high flame retardant.
Further, the geometry of the cross section of described restrictive coating is swallow-tail form.
Cross section is that the restrictive coating of swallow-tail form is in uneven thickness, always uphold along the most weakness of stress when bending when this telecommunication cable or shrink, thus the side (i.e. the lower end of dovetail) that restrictive coating is thicker is always in bending inner side, make telecommunication cable lopping or on coil time, automatically the inner side of telecommunication cable is contracted in the side (i.e. the lower end of dovetail) that thickness is larger, directive auto reeling and contraction, the bending stress that telecommunication cable can be produced and distorting stress are evenly carried in the whole length of telecommunication cable, reduce concentrating of bending stress, avoid this telecommunication cable Local Damaged, increase substantially the useful life of telecommunication cable.
Further, described in every root, the surface coverage of core has zinc coat.
Online wicking surface arranges zinc coat, effectively can slow down the speed of the oxidized corrosion of core, effectively extends the useful life of core.
Further, the polyurethane layer of described restrictive coating to be thickness be 0.5mm ~ 0.7mm.
The polyurethane layer of 0.5mm ~ 0.7mm has the characteristics such as high resilience, high abrasion, high-tensile, pliability are good, endurance, and is easy to processing, makes this telecommunication cable have good flexible and fatigue durability, and long service life.
Further, described restrictive coating is irradiation foaming cross-linked polyethylene layer.
Irradiation foaming cross-linked polyethylene layer has good obdurability, rub resistance, excellent insulating properties, thermal insulation and chemical resistance, makes this telecommunication cable have good flexible and heat-resisting quantity, and long service life.
Further, described high-temperature-resistant layer is high-temperature-resistant thermal-insulation coating layer.
The heatproof amplitude of high-temperature-resistant thermal-insulation coating layer is-80 DEG C-1800 DEG C, can directly in the face of flame heat-insulation and heat-preservation, conductive coefficient only has 0.03W/m.K, effectively can suppress and shield the conduction of ultrared radiant heat and heat, heat insulation suppression efficiency can reach about 90%, scattering and disappearing of the thermal radiation of high temp objects and heat can be suppressed, can reprocess after insulation, withstand voltage, solidification, directly be coated on outer shielding layer outward.
Further, described high-temperature-resistant layer is refractory protection coating.
The heatproof amplitude of refractory protection coating is 0 DEG C-1910 DEG C; refractory coating containing high percentage zirconium compounds; the combination properties such as its distinctive physics, chemistry can well resist thermal shock, are a kind of refractory linings of permanence, are directly coated on outer shielding layer outward during use.
Hinge structure, the embodiment of the present invention has following beneficial effect: a kind of telecommunication cable that the embodiment of the present invention provides has following characteristics: 1, comprise two groups of two mutual stranded cores, the first insulating resin layer and the second insulating resin layer is held outward respectively at two groups of cores, the secant mode coefficient of the first insulating resin layer and the second insulating resin layer is arranged between 20MPa ~ 30MPa, the first insulating resin layer and the second insulating resin layer is made to have good flexibility, thus this telecommunication cable is easily bent, be applicable to staff's wiring operation in narrow space.2, outside the second insulating resin layer, internal shield is held, and hold outer shielding layer by outside internal shield and the stranded cable body of the first insulating resin layer, the signal of communication of the interference signal interference core transmission that outer shielding layer maskable is external, internal shield can prevent the signal of communication of two groups of cores transmission from interfering with each other.3, when cable is positioned at the higher electric equipment of temperature or wiring space breaking out of fire, owing to having held high-temperature-resistant layer at outer shielding layer, make this cable have certain anti-flammability, can Yin Gaowen be prevented and cause electric equipment not use normally accident occur.This telecommunication cable is skillfully constructed, easy to implement, generalization is strong.
For making the above-mentioned purpose of the embodiment of the present invention, feature and advantage become apparent, preferred embodiment cited below particularly, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is embodiment of the present invention part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the embodiment of the present invention provided in the accompanying drawings and the scope of the claimed embodiment of the present invention of not intended to be limiting, but the selected embodiment of the embodiment of the present invention is only represented.Based on the embodiment in the embodiment of the present invention, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of embodiment of the present invention protection.
The structural representation of the cross section of a kind of telecommunication cable that Fig. 1 provides for the embodiment of the present invention one;
The structural representation of the cross section of a kind of telecommunication cable that Fig. 2 provides for the embodiment of the present invention two;
Fig. 3 is the A portion partial enlarged drawing in Fig. 2.
Wherein, the corresponding relation between Reference numeral and component names is as follows: core 101, the first insulating resin layer 102, second insulating resin layer 103, internal shield 104, outer shielding layer 105, restrictive coating 106, high-temperature-resistant layer 107, braid 108, zinc-plated soft copper overcoat 109.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only embodiment of the present invention part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the embodiment of the present invention provided in the accompanying drawings and the scope of the claimed embodiment of the present invention of not intended to be limiting, but the selected embodiment of the embodiment of the present invention is only represented.Based on the embodiment of the embodiment of the present invention, the every other embodiment that those skilled in the art obtain under the prerequisite not making creative work, all belongs to the scope of embodiment of the present invention protection.
Along with the high speed development of electronic communication technology, the requirement for various telecommunication cable is also more and more higher not only requires that telecommunication cable will possess certain high resiliency, high-wearing feature and flexibility, also should have certain lightweight and anti-interference simultaneously.The core of telecommunication cable of the prior art between interference still exist, bendability and flexibility are also poor, are unfavorable for carrying out wiring operation in narrow working space, and when running into high temperature, this cable is inflammable, and cause electric equipment not use normally.
In view of this, inventor finds through long-term observation and research, provides a kind of telecommunication cable, comprises two groups two mutual stranded cores, restrictive coating, high-temperature-resistant layer and outer shielding layers.This telecommunication cable has good flexibility, thus this telecommunication cable is easily bent, and is applicable to staff's wiring operation in narrow space; The signal of communication of the interference signal interference core transmission that outer shielding layer maskable is external, internal shield can prevent the signal of communication of two groups of cores transmission from interfering with each other; Can Yin Gaowen be prevented and cause electric equipment not use normally accident occur.This telecommunication cable is skillfully constructed, easy to implement, generalization is strong.
Also by reference to the accompanying drawings the embodiment of the present invention is described in further detail below by specific embodiment.
Consult Fig. 1, the embodiment of the present invention one provides a kind of telecommunication cable, this telecommunication cable curl, this cable comprises two groups by stranded mutually core 101 unit of two cores 101, restrictive coating 106, high-temperature-resistant layer 107 and outer shielding layer 105, two groups of core 101 unit are surrounded with the first insulating resin layer 102 and the second insulating resin layer 103 outward respectively, the secant mode coefficient of the first insulating resin layer 102 and the second insulating resin layer 103 is all between 20MPa ~ 30MPa, by changing the comonomer containing ratio of the matrix resin of insulating resin or being cross-linked insulating resin, the secant modulus of insulating material can be changed.
Be surrounded with internal shield 104 outside second insulating resin layer 103, the first insulating resin layer 102 is twisted into cable body with internal shield 104, and outer shielding layer 105 is paperwrapped in outside cable body.Internal shield 104 or outer shielding layer 105 can be selected as copper moulds composite shielding layer or plastic-aluminum combined screen, and plastic-aluminum combined screen and copper are moulded composite shielding layer and had good shielding, and interference free performance is very strong.
High-temperature-resistant layer 107 is paperwrapped in outside outer shielding layer 105, high-temperature-resistant layer 107 selects thermostable heat-isolating coating layer, the heatproof amplitude of high-temperature-resistant thermal-insulation coating layer is-80 DEG C-1800 DEG C, can directly in the face of flame heat-insulation and heat-preservation, conductive coefficient only has 0.03W/m.K, effectively can suppress and shield the conduction of ultrared radiant heat and heat, heat insulation suppression efficiency can reach about 90%, the thermal radiation of high temp objects and the lost of heat can be suppressed, can reprocess after insulation, withstand voltage, solidification, directly be coated on outer shielding layer 105 outer.
Restrictive coating 106 is paperwrapped in outside high-temperature-resistant layer 107, and restrictive coating 106 selects irradiation foaming cross-linked polyethylene layer.Irradiation foaming cross-linked polyethylene layer has good obdurability, rub resistance, excellent insulating properties, thermal insulation and chemical resistance, makes this telecommunication cable have good flexible and heat-resisting quantity, and long service life.
A kind of telecommunication cable that the embodiment of the present invention provides has following characteristics: 1, comprise two groups two mutual stranded cores 101, the first insulating resin layer 102 and the second insulating resin layer 103 is held respectively outside two groups of cores 101, the secant mode coefficient of the first insulating resin layer 102 and the second insulating resin layer 103 is arranged between 20MPa ~ 30MPa, the first insulating resin layer 102 and the second insulating resin layer 103 is made to have good flexibility, thus this telecommunication cable is easily bent, be applicable to staff's wiring operation in narrow space.2, outside the second insulating resin layer 103, internal shield 104 is held, and hold outer shielding layer 105 by outside internal shield 104 and the stranded cable body of the second insulating resin layer 103, the signal of communication of interference signal interference core 101 transmission that outer shielding layer 105 maskable is external, internal shield 104 can prevent the signal of communication that two groups of cores 101 transmit from interfering with each other.3, when cable is positioned at the higher electric equipment of temperature or wiring space breaking out of fire, owing to having held high-temperature-resistant layer 107 at outer shielding layer 105, make this cable have certain anti-flammability, can Yin Gaowen be prevented and cause electric equipment not use normally accident occur.This telecommunication cable is skillfully constructed, easy to implement, generalization is strong.
Consult Fig. 2, Fig. 3, a kind of telecommunication cable that the embodiment of the present invention two provides, it should be noted that, the telecommunication cable that the present embodiment provides, its basic structure is identical with embodiment one with the technique effect of principle and generation, for concise and to the point description, the not mentioned part of the present embodiment part, can corresponding contents in reference example one.
This telecommunication cable comprises two groups by stranded mutually core 101 unit, restrictive coating 106, high-temperature-resistant layer 107 and the outer shielding layer 105 of two cores 101, and the surface coverage of every root core 101 has zinc coat.Zinc coat is set on core 101 surface, effectively can slows down the speed of the oxidized corrosion of core 101, effectively extend the useful life of core 101.Two groups of core 101 unit are surrounded with the secant mode coefficient of the first insulating resin layer 102 and the second insulating resin layer 103, first insulating resin layer 102 and the second insulating resin layer 103 outward respectively all between 20MPa ~ 30MPa.
First insulating resin layer 102 and the second insulating resin layer 103 are the insulating resin layer that the copolymer of alkene and the comonomer with polarity is made.The first insulating resin layer 102 utilizing alkene and the copolymer of the comonomer with polarity to be made has good flexibility and bendability with described second insulating resin layer 103, and rising of thermal decomposition makes temperature be 300 DEG C, thus this first insulating resin layer 102 is higher with the thermal endurance of described second insulating resin layer 103; In addition, easily form carburization zone during burning, carburization zone can completely cut off extraneous air, thus suppresses burning, can realize high flame retardant.
Be surrounded with internal shield 104 outside second insulating resin layer 103, the first insulating resin layer 102 is twisted into cable body with internal shield 104, and outer shielding layer 105 is paperwrapped in outside cable body, and high-temperature-resistant layer 107 is paperwrapped in outside outer shielding layer 105.High-temperature-resistant layer 107 selects refractory protection coating; the heatproof amplitude of refractory protection coating is 0 DEG C-1910 DEG C; refractory coating containing high percentage zirconium compounds; the combination properties such as its distinctive physics, chemistry can well resist thermal shock; be a kind of refractory lining of permanence, be directly coated on outer shielding layer 105 during use outer.
Restrictive coating 106 is paperwrapped in outside high-temperature-resistant layer 107, and restrictive coating 106 selects thickness to be the polyurethane layer of 0.5mm ~ 0.7mm.The polyurethane layer of 0.5mm ~ 0.7mm has the characteristics such as high resilience, high abrasion, high-tensile, pliability are good, endurance, and is easy to processing, makes this telecommunication cable have good flexible and fatigue durability, and long service life.
Further, the geometry of the cross section of restrictive coating 106 is swallow-tail form.Cross section is that the restrictive coating 106 of swallow-tail form is in uneven thickness, always uphold along the most weakness of stress when bending when this telecommunication cable or shrink, thus the side (i.e. the lower end of dovetail) that restrictive coating 106 is thicker is always in bending inner side, make telecommunication cable lopping or on coil time, automatically the inner side of telecommunication cable is contracted in the side (i.e. the lower end of dovetail) that thickness is larger, directive auto reeling and contraction, the bending stress that telecommunication cable can be produced and distorting stress are evenly carried in the whole length of telecommunication cable, reduce concentrating of bending stress, avoid this telecommunication cable Local Damaged, increase substantially the useful life of telecommunication cable.
Preferably, this telecommunication cable also comprises braid 108, and braid 108 is paperwrapped in outside outer shielding layer 105, and high-temperature-resistant layer 107 is paperwrapped in outside braid 108.Braid 108 is paperwrapped in outside outer shielding layer 105, thus constitutes a set of composite shielding layer, and greatly strengthen the interference free performance of this telecommunication cable, Signal transmissions is more stable, and the image of transmission is also more clear.
Further, described telecommunication cable also comprises zinc-plated soft copper overcoat 109, and zinc-plated soft copper overcoat 109 is paperwrapped in outside braid 108, and high-temperature-resistant layer 107 is paperwrapped in outside zinc-plated soft copper overcoat 109.Zinc-plated soft copper overcoat 109 interference signal to external world has great shielding, makes the signal of communication that core 101 transmits avoid disturbed further.
In the description of the embodiment of the present invention, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in embodiments of the present invention can be understood.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
In the description of the embodiment of the present invention, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this invention product orientation of usually putting or position relationship when using, only the embodiment of the present invention and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the embodiment of the present invention can not be interpreted as.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
The foregoing is only the preferred embodiment of the embodiment of the present invention, be not limited to the embodiment of the present invention, for a person skilled in the art, the embodiment of the present invention can have various modifications and variations.Within all spirit in the embodiment of the present invention and principle, any amendment done, equivalent replacement, improvement etc., within the protection range that all should be included in the embodiment of the present invention.
Claims (10)
1. a telecommunication cable, it is characterized in that, comprise two groups by the stranded mutually core unit of two cores, restrictive coating, high-temperature-resistant layer and outer shielding layer, core unit described in two groups is surrounded with the first insulating resin layer and the second insulating resin layer outward respectively, the secant mode coefficient of described first insulating resin layer and described second insulating resin layer is all between 20MPa ~ 30MPa, internal shield is surrounded with outside described second insulating resin layer, described first insulating resin layer and described internal shield are twisted into cable body, described outer shielding layer is paperwrapped in outside described cable body, described high-temperature-resistant layer is paperwrapped in outside described outer shielding layer, described restrictive coating is paperwrapped in outside described high-temperature-resistant layer.
2. telecommunication cable according to claim 1, is characterized in that, described telecommunication cable also comprises braid, and described braid is paperwrapped in outside described outer shielding layer, and described high-temperature-resistant layer is paperwrapped in outside described braid.
3. telecommunication cable according to claim 2, is characterized in that, described telecommunication cable also comprises zinc-plated soft copper overcoat, and described zinc-plated soft copper overcoat is paperwrapped in outside described braid, and described high-temperature-resistant layer is paperwrapped in outside described zinc-plated soft copper overcoat.
4., according to the arbitrary described telecommunication cable of claims 1 to 3, it is characterized in that, the insulating resin layer that the copolymer that described first insulating resin layer and described second insulating resin layer are the comonomer utilizing alkene and have polarity is made.
5. telecommunication cable according to claim 4, is characterized in that, the geometry of the cross section of described restrictive coating is swallow-tail form.
6. telecommunication cable according to claim 1, is characterized in that, described in every root, the surface coverage of core has zinc coat.
7. telecommunication cable according to claim 1, is characterized in that, the polyurethane layer of described restrictive coating to be thickness be 0.5mm ~ 0.7mm.
8. telecommunication cable according to claim 1, is characterized in that, described restrictive coating is irradiation foaming cross-linked polyethylene layer.
9. telecommunication cable according to claim 1, is characterized in that, described high-temperature-resistant layer is high-temperature-resistant thermal-insulation coating layer.
10. telecommunication cable according to claim 1, is characterized in that, described high-temperature-resistant layer is refractory protection coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828164.8A CN105261421A (en) | 2015-11-24 | 2015-11-24 | Communication cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828164.8A CN105261421A (en) | 2015-11-24 | 2015-11-24 | Communication cable |
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| Publication Number | Publication Date |
|---|---|
| CN105261421A true CN105261421A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510828164.8A Pending CN105261421A (en) | 2015-11-24 | 2015-11-24 | Communication cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243714A (en) * | 2018-09-21 | 2019-01-18 | 安徽华电线缆股份有限公司 | A kind of Dampproof coaxial cable and its manufacturing process |
-
2015
- 2015-11-24 CN CN201510828164.8A patent/CN105261421A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243714A (en) * | 2018-09-21 | 2019-01-18 | 安徽华电线缆股份有限公司 | A kind of Dampproof coaxial cable and its manufacturing process |
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