CN105047300A - Data transmission cable for physically-foamed insulation transponder - Google Patents
Data transmission cable for physically-foamed insulation transponder Download PDFInfo
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- CN105047300A CN105047300A CN201510535446.9A CN201510535446A CN105047300A CN 105047300 A CN105047300 A CN 105047300A CN 201510535446 A CN201510535446 A CN 201510535446A CN 105047300 A CN105047300 A CN 105047300A
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- transmission cable
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- answering machine
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Abstract
The invention provides a data transmission cable for a physically-foamed insulation transponder. The data transmission cable comprises a cable core, an insulating lining, a base sheath, an inner sheath, a double-steel belt armor layer and an outer sheath, wherein the cable core is stranded by two of four insulated single lines; the insulating lining, the base sheath, the inner sheath, the double-steel belt armor layer and the outer sheath are sequentially arranged outside the cable core from inside to outside; discharge copper leads are arranged between the insulating lining and the base sheath; and each insulated single line comprises a copper conductor and a skin-foam-skin physically-foamed insulation structure outside the copper conductor. The cable has the advantages of good moisture-proof function, excellent insulating property and small transmission attenuation. According to an aluminum sheath cable, a layer of inner sheath for longitudinally wrapping the outside of a corrugated single-side aluminum-plastic tape and a single-side aluminum-plastic tape is removed; by properly increasing the thickness of an aluminum layer of the aluminum sheath, the same shielding performance effect is reached; the manufacturing process is effectively reduced; the production efficiency is improved; and the manufacturing cost is reduced.
Description
Technical field
The invention belongs to field of cable technology, especially relate to a kind of physical foam insulation answering machine data transmission cable.
Background technology
Along with train running speed improves constantly, only rely on the mode by track circuit, inaccessible information being delivered to mobile unit, in amount of information, can not meet the requirement that train safe is run at high speed, needing to increase transponder device provides a large amount of fix information and variable information to train control on board equipment.LEU is a kind of data transmission set, and for receiving the data message of train control center transmission and sending to transponder, and answering machine data transmission cable is the connection for transponder and LEU, the message data of transmission LEU and electric energy.
With railway construction high speed development, railroad track number of transponders that is interval and the interior demand in station also gets more and more.But, current railway answering machine data transmission cable adopts real core insulation structure, the relative dielectric constant of cable insulation medium is larger, therefore, cable only has four by transmission performance restriction transmit port, be 8.82kHz, 282.5kHz, 565kHz, 1MHz etc. respectively, because the port of answering machine data transmission cable is rare, therefore the quantity required of answering machine data transmission cable also gets more and more.According to the shielding properties demand under varying environment, answering machine data transmission cable is divided into the cable of two kinds of shielding constructions such as composite sheath type cable and aluminium sheath type cable.But, in prior art, aluminium sheath type railway answering machine data transmission cable, in order to improve the shielding properties of cable, is provided with composite sheath and aluminium sheath two kinds of shield sheath structures outward at cable core simultaneously, therefore the manufacturing cost of cable is too high, and adds lengthy and tedious to manufacture process.
Summary of the invention
In view of this, the present invention is intended to propose a kind of physical foam insulation answering machine data transmission cable, significantly can improve the transmission frequency of cable, increases transmit port quantity, has simplified shielding layer structure under the prerequisite ensureing shielding properties simultaneously.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of physical foam insulation answering machine data transmission cable, comprises by two or the stranded cable core of four insulated single wires, and insulating liner, basic sheath, inner sheath, double-tape armor layer, oversheath that cable core outside sets gradually from the inside to the outside; Earial drainage copper conductor is provided with between described insulating liner and basic sheath; Described insulated single wire is made up of the skin foam skin physical blowing polyolefin insulation structure of copper conductor and copper conductor outside.
Further, described basic sheath can be aluminium sheath.
Further, described aluminium sheath is indulged bag and is welded on insulating liner outside, forms all-sealed structure.
Further, described basic sheath can also be the composite sheath comprising vertical bag embossing one side plastic-aluminum belt.
Further, described basic sheath is close to by described earial drainage copper conductor.
Further, described insulating liner is wrapped non-hygroscopic polyethylene jacket or extrudes polyethylene jacket.
Further, described inner sheath is pe sheath or LSOH anti-flaming sheath.
Further, described oversheath is pe sheath or LSOH anti-flaming sheath.
Further, described copper conductor and earial drainage copper conductor are TR type annealed copper wire.
Relative to prior art, the present invention has following advantage:
1) insulation of this cable have employed " skin-bubble-Pi " physical blowing polyolefin insulation, there are good moisture-proof function and excellent insulation property, and the relative dielectric constant of dielectric is significantly reduced, reduce the transmission attenuation of cable, effectively can improve the transmission performance of cable.
2) basic sheath adopts the aluminium sheath type cable of aluminium sheath, aluminium sheath type cable more of the prior art eliminates one deck inner sheath outside vertical bag embossing one side aluminum plastic belt and one side aluminum plastic belt, like this, just can by suitably increasing the aluminum layer thickness of aluminium sheath, reach identical shielding properties effect, can effectively reduce manufacturing process's process, improve production efficiency.Meanwhile, significantly can also reduce the external diameter of finished cable, not only the aluminum layer thickness therefore suitably increasing aluminium sheath can not increase manufacturing cost, significantly can reduce manufacturing cost on the contrary.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention.
Description of reference numerals:
1-polyolefin insulation structure, 2-copper conductor, 3-insulating liner, 4-earial drainage copper conductor, 5-basis sheath, 6-inner sheath, 7-double-tape armor layer, 8-oversheath.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
A kind of physical foam insulation answering machine data transmission cable, as shown in Figure 1, comprise by two or the stranded cable core of four insulated single wires, and insulating liner 3, basic sheath 5, inner sheath 6, double-tape armor layer 7, oversheath 8 that cable core outside sets gradually from the inside to the outside; Earial drainage copper conductor 4 is provided with between described insulating liner 3 and basic sheath 5; Described insulated single wire is made up of the skin-bubble-Pi three-layer co-extrusion physic foaming polyolefin insulation structure 1 of copper conductor 2 and copper conductor 2 outside.
It should be noted that, skin-bubble-Pi three-layer co-extrusion physic foaming polyolefin insulation structure 1 makes the relative dielectric constant of the dielectric of cable reduce about 40%, significantly can promote the transmission performance of cable, this insulation system has excellent moisture-proof function and insulation property.
Described basic sheath 5 can aluminium sheath, and this aluminium sheath indulges bag, and to be welded on insulating liner 3 outside, forms all-sealed structure.Owing to eliminating one deck inner sheath outside vertical bag embossing one side aluminum plastic belt and one side aluminum plastic belt in aluminium sheath type structure, therefore, aluminum layer thickness can carry out suitable increase on the basis of original technology, and such more compact structure has saved space under the prerequisite guaranteeing shielding properties.
Wherein, described basic sheath 5 is close to by described earial drainage copper conductor 4.Cable internal structure consolidation, good stability, can not twist during retractable cable easily.
Described basic sheath 5 can also be composite sheath, and this composite sheath comprises vertical bag embossing one side plastic-aluminum belt.Now, the aluminium face of vertical bag embossing one side plastic-aluminum belt is close to by earial drainage copper conductor.
Wherein, described insulating liner 3 is wrapped non-hygroscopic polyethylene jacket or extrudes polyethylene jacket.
As required, described inner sheath 6 can adopt pe sheath or LSOH anti-flaming sheath.Described oversheath 8 can adopt pe sheath or LSOH anti-flaming sheath.
Wherein, described copper conductor 2 and earial drainage copper conductor 4 are TR type annealed copper wire, ensure the softness of cable, are convenient to folding and unfolding, not easy fracture.
It should be noted that, in actual production, can also centered by cable core, uniformly arrange four groups, often organize two earial drainage copper conductors, such structural design, is not only conducive to the rounding property of the entirety of cable, also assures that higher fail safe, even if cable side is subject to foreign object impact, this side earial drainage copper conductor damages, and does not also affect the use of cable, fail safe is high, and result of use is good.
In addition, can also arrange central reinforce member in the center of cable core, as cotton and hemp rope, under the prerequisite increasing cable weight not significantly, construction of cable intensity be strengthened, stability is better, durable in use.
The insulation of this cable have employed " skin-bubble-Pi " physical blowing polyolefin insulation, there are good moisture-proof function and excellent insulation property, and the relative dielectric constant of dielectric is significantly reduced, reduce the transmission attenuation of cable, effectively can improve the transmission performance of cable.
During the sheath employing aluminium sheath of basis, aluminium sheath type cable more of the prior art eliminates one deck inner sheath outside vertical bag embossing one side aluminum plastic belt and one side aluminum plastic belt, can effectively reduce manufacturing process's process, improve production efficiency.Meanwhile, the external diameter of finished cable can also significantly be reduced.
Therefore, adopting aluminium sheath at basic sheath 5, when producing aluminium sheath type cable, as required, by suitably increasing the aluminum layer thickness of aluminium sheath, shielding properties can be improved, to meet product requirement.Because aluminium sheath type cable more of the prior art eliminates one deck inner sheath outside vertical bag embossing one side aluminum plastic belt and one side aluminum plastic belt, therefore, not only the aluminum layer thickness suitably increasing aluminium sheath can not increase manufacturing cost, significantly can reduce manufacturing cost on the contrary.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a physical foam insulation answering machine data transmission cable, it is characterized in that: comprise by two or the stranded cable core of four insulated single wires, and insulating liner, basic sheath, inner sheath, double-tape armor layer, oversheath that cable core outside sets gradually from the inside to the outside; Earial drainage copper conductor is provided with between described insulating liner and basic sheath; Described insulated single wire is made up of the skin foam skin physical blowing polyolefin insulation structure of copper conductor and copper conductor outside.
2. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described basic sheath is aluminium sheath.
3. a kind of physical foam insulation answering machine data transmission cable according to claim 2, is characterized in that: described aluminium sheath is indulged bag and is welded on insulating liner outside, forms all-sealed structure.
4. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described basic sheath is the composite sheath comprising vertical bag embossing one side plastic-aluminum belt.
5. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described basic sheath is close to by described earial drainage copper conductor.
6. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described insulating liner is wrapped non-hygroscopic polyethylene jacket or extrudes polyethylene jacket.
7. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described inner sheath is pe sheath or LSOH anti-flaming sheath.
8. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described oversheath is pe sheath or LSOH anti-flaming sheath.
9. a kind of physical foam insulation answering machine data transmission cable according to claim 1, is characterized in that: described copper conductor and earial drainage copper conductor are TR type annealed copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535446.9A CN105047300A (en) | 2015-08-27 | 2015-08-27 | Data transmission cable for physically-foamed insulation transponder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510535446.9A CN105047300A (en) | 2015-08-27 | 2015-08-27 | Data transmission cable for physically-foamed insulation transponder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105047300A true CN105047300A (en) | 2015-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510535446.9A Pending CN105047300A (en) | 2015-08-27 | 2015-08-27 | Data transmission cable for physically-foamed insulation transponder |
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| CN (1) | CN105047300A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448863A (en) * | 2016-11-11 | 2017-02-22 | 樊英华 | Cable with aluminum strip protective layer |
| CN110492211A (en) * | 2019-08-21 | 2019-11-22 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of leaky waveguide and preparation method thereof |
-
2015
- 2015-08-27 CN CN201510535446.9A patent/CN105047300A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448863A (en) * | 2016-11-11 | 2017-02-22 | 樊英华 | Cable with aluminum strip protective layer |
| CN107731406A (en) * | 2016-11-11 | 2018-02-23 | 樊英华 | A kind of cable with aluminium strip protective layer |
| CN107731387A (en) * | 2016-11-11 | 2018-02-23 | 樊英华 | A kind of cable with aluminium strip protective layer |
| CN107731387B (en) * | 2016-11-11 | 2019-04-23 | 江苏威运高科技有限公司 | A kind of cable with aluminium strip protective layer |
| CN107731406B (en) * | 2016-11-11 | 2019-04-26 | 扬州市凤鸣电缆有限公司 | A kind of cable with aluminium strip protective layer |
| CN110492211A (en) * | 2019-08-21 | 2019-11-22 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of leaky waveguide and preparation method thereof |
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Application publication date: 20151111 |