CN2729870Y - Railway digital signal cable with internal shielding layer - Google Patents

Railway digital signal cable with internal shielding layer Download PDF

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Publication number
CN2729870Y
CN2729870Y CN 200420086042 CN200420086042U CN2729870Y CN 2729870 Y CN2729870 Y CN 2729870Y CN 200420086042 CN200420086042 CN 200420086042 CN 200420086042 U CN200420086042 U CN 200420086042U CN 2729870 Y CN2729870 Y CN 2729870Y
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China
Prior art keywords
shielding
digital signal
screen
layer
signal cable
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Expired - Lifetime
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CN 200420086042
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Chinese (zh)
Inventor
是溪明
张颜珠
黄晓勇
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Xi'an Xd Cable Co ltd
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Xi'an Xd Cable Co ltd
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Application filed by Xi'an Xd Cable Co ltd filed Critical Xi'an Xd Cable Co ltd
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Abstract

The utility model relates to a railway digital signal cable with internal shielding layer, comprising an insulation jacket and at least one shielding group in the insulation jacket. The shielding group comprises a plurality of single wires and a shielding layer provided out of the insulated single wires. The shielding layer comprises an inner side non-hygroscopic insulation layer, a metal shielding layer and an outer side non-hygroscopic insulation layer. One or a plurality of drain wires are provided between the metal shielding layer and the inner side non-hygroscopic insulation layer. The utility model removes the technical problems of the existing railway signal cable with poor safety and mutual interference signals; the characteristics are that the utility model is good in safety, good compatibility of high-frequency and low-frequency signal transmission, low in construction cost, good anti-damping property and ageing resistance. The utility model can satisfy with the railway signal automatic block system and stop electric code information communication, solves effectively the communication group interference problem between common frequency same cord communication, and increases safety and reliability of railway signal digital and simulation information transfer channel.

Description

Internal screening railway digital signal cable
Technical field
The utility model relates to a kind of railway signal cable, relates in particular to a kind of railway digital signal cable.
Background technology
The shielding quad of existing railway signal cable has inner insulating layer outward, though its outer metal tape that adopts shields, screen does not have good reliable ground, so can not guarantee the quick earial drainage of induced current that electrical network, thunderbolt produce, poor safety performance.In addition, existing railway signal cable cable core is made up of the heart yearn of some line groups, the cored wire conductor external insulation layer adopts monolayer insulating layer, because this insulating barrier is the solid layer structure, has relative higher dielectric constant, directly have influence on the anti-decay property of cable, when transmitting high-frequency signal, seem obvious especially.In addition, in the transmission course of railway signal, high-frequency signal transmission is arranged not only, and the low frequency signal transmission is arranged, and when transmitting with cable, the mutual interference of two kinds of signal phases, directly affect signal transfer quality, the high and low frequency signal that existing railway signal cable can not be realized ideal is with the compatible transmission of cable.
Summary of the invention
The utility model purpose provides a kind of internal screening railway digital signal cable, and it has solved, and existing railway signal cable poor safety performance, anti-decay property are poor, the technical problem of signal phase mutual interference.
Technical solution of the present utility model is: a kind of internal screening railway digital signal cable; comprise external protection 9 and at least one the shielding conductor group 6 that is arranged in the external protection 9; described shielding conductor group 6 comprises thoroughly doing away with edge single lines 5 more and be arranged on the described screen that thoroughly does away with outside the edge single line 5 more; described screen comprises the inboard non-hygroscopic insulating barrier 4 that is provided with from inside to outside; metal screen layer 2 and outside non-hygroscopic insulating barrier 1; described insulated single wire 5 comprises cored wire conductor 22 and the insulating barrier 19 that is arranged on outside the cored wire conductor 22; its special character is to be provided with one or more earial drainage line 3 between described metal screen layer 2 and the described inboard non-hygroscopic insulating barrier 4.
Be provided with at least one non-shielding conductor group 7 in the above-mentioned external protection 9.
Above-mentioned shielding conductor group 6 is for shielding the multiple twisted pair wire group of line group, shielding quad or shielding, and described non-shielding conductor group 7 is that non-shielding is to line group, non-shielding quad, the multiple twisted pair wire group of non-shielding or insulated single wire.
Be provided with at least one gasket for packing 8 in the above-mentioned external protection 9.
Above-mentioned metal screen layer 2 is copper strips screen, aluminium strip screen, metal wire woven shield, aluminium-plastic tape screen or copper strips-steel band-steel band combination screen; Described inboard non-hygroscopic insulating barrier 4 and outside non-hygroscopic insulating barrier 1 are plastic tape or polyolefin bed course.
Copper strips in above-mentioned copper strips screen or copper strips-steel band-steel band combination screen is the embossing copper strips.
Above-mentioned insulating barrier 19 is to be made of or by interior foaming layer 20 with exodermis 18 constitutes or be made of endodermis 16, middle foaming layer 17 and exodermis 18 solid layer 21.
Above-mentioned protective layer 9 comprises belting layer 14, alibate 13, inner covering 12, armour 11, oversheath 10 from inside to outside successively.
Above-mentioned protective layer 9 also can comprise belting layer 14, APL aluminum plastic laminate sheath 15, armour 11, oversheath 10 from inside to outside successively.
The utlity model has following advantage:
1, fail safe is good.Quad has inner insulating layer outward in the shielding quad, its outer metal tape shielding and built-in earial drainage line of adopting, has higher fail safe, screen plays effective guide functions, guarantee the good reliable ground of shield, the induced current that electrical network, thunderbolt produce is earial drainage fast, prevents to disturb normal signal transmission.
2, the transmission of high-frequency signal, low frequency signal is compatible good, broadband.In order to obtain satisfied shield effectiveness, the utility model cable adopts contrary magnetic and the shielding of ferromagnetic bimetallic combinations of substances, in the high occasion of shielding requirements, then adopt to prick the vertical bag of line copper strips and add that the tin-coated steel band gap is wrapped to add the overlapping wrapped shielding that realizes of zinc-plated steel band, because effectiveness is good, make high-frequency signal, the low frequency signal transmission is compatible good, the transmission frequency bandwidth of cable, traffic safety and computer control and detection have been guaranteed, improved the railway signal numeral, the fail safe of analog information transmission channel and reliability, realize the multinomial service integration transmission of low electric capacity broadband, satisfied railway transportation at a high speed, heavy duty, big density development requirement.
3, construction cost is low.Quad has increased screen outward, has well solved unlike signal quad transmission homogenous frequency signal and has been difficult to problem with the cable transmission because of the phase mutual interference, has realized with frequently accomplishing multi-purpose with the cable compatibility, saves construction cost.
4, anti-decay property is good." skin-foam-Pi " three-layer co-extrusion physic foaming insulation system single line since in fact centre intracardiac, crust have many close and mutual disconnected foam hole froth beds, the solid insulating barrier of its permittivity ratio greatly reduces, thereby makes circuit transmission attenuation constant descend greatly.
5, ageing resistace is good.Extrude pe sheath after the metal layer shields, be convenient to draw with branch and use, improve the ageing resistace of cable extension.
The explanation of accompanying drawing drawing
Fig. 1 is a kind of internal screening railway digital signal cable structural representation;
Fig. 2 is another kind of internal screening railway digital signal cable structural representation;
Fig. 3 is the structural representation of a shielding quad;
Fig. 4 is the insulated single wire schematic diagram that insulating barrier adopts " skin-foam-Pi " structure;
Fig. 5 is the insulated single wire schematic diagram that insulating barrier adopts " foam-Pi " structure;
Fig. 6 is the insulated single wire schematic diagram that insulating barrier adopts the solid layer structure.
Embodiment
A kind of concrete structure of the utility model internal screening railway digital signal cable is referring to Fig. 1; cable comprises: the external protection 9 that is made of belting layer 14, alibate 13, inner covering 12, armour 11, oversheath 10; be arranged on two shielding conductor groups 6 in the external protection 9; 7, four gasket for packings 8 of two non-shielding conductor groups.Wherein shielding conductor group 6 is the shielding quad, and non-shielding conductor group 7 is non-shielding quad; Alibate 13 also can adopt the bonding sheath of plastic-aluminum.The concrete structure of another kind of internal screening railway digital signal cable is referring to Fig. 2, its with Fig. 1 in the difference of cable be that external protection is different, the external protection 9 of this cable is made of belting layer 14, APL aluminum plastic laminate sheath 15, armour 11, oversheath 10.When shielding conductor group in the cable 6 adopts the shielding quad, its concrete structure is referring to Fig. 3, comprise by red, green, white, Lan Si and thoroughly do away with the quad that edge single line 5 is formed, be arranged on four screens that thoroughly do away with outside the edge single line 5, screen comprises inboard non-hygroscopic insulating barrier 4, metal screen layer 2 and the outside non-hygroscopic insulating barrier 1 that is provided with from inside to outside, is provided with an earial drainage line 3 between metal screen layer 2 and inboard non-hygroscopic insulating barrier 4.
The structure of insulated single wire 5 can have multiple, referring to Fig. 4, insulated single wire 5 comprises cored wire conductor 22 and the insulating barrier 19 that is arranged on outside the cored wire conductor 22, and insulating barrier 19 is made of endodermis 16, middle foaming layer 17 and exodermis 18, i.e. " skin-foam-Pi " three-layer co-extrusion physic foaming insulation system; Referring to Fig. 5, insulated single wire 5 comprises cored wire conductor 22 and the insulating barrier 19 that is arranged on outside the cored wire conductor 22, and insulating barrier 19 is made of interior foaming layer 20 and exodermis 18; Referring to Fig. 6, insulated single wire 5 comprises cored wire conductor 22 and the insulating barrier 19 that is arranged on outside the cored wire conductor 22, and insulating barrier 19 is made of solid layer 21.
Metal screen layer 2 can adopt copper strips screen, aluminium strip screen, metal wire woven shield or aluminium-plastic tape screen according to concrete operating position, and wherein the copper strips screen adopts the embossing copper strips can improve the bending property and the suppleness of shielding conductor group.In order to obtain satisfied shield effectiveness, adopt contrary magnetic and ferromagnetic bimetallic combinations of substances shield effectiveness the best, particularly in the high occasion of shielding requirements, screen can adopt copper strips-steel band-steel band combination screen, and promptly the vertical bag of embossing copper strips adds that the tin-coated steel band gap is wrapped to add overlapping wrapped realization of zinc-plated steel band.
Inboard non-hygroscopic insulating barrier 4 and outside non-hygroscopic insulating barrier 1 can adopt plastic tape or polyolefin bed course.
In actual production; in the external protection 9 four groups on two set of shield lines can only be set; nearly 12 set of shield quads also can be set; certainly the shielding conductor groups 6 in the external protection 9 also can be shieldings in the multiple twisted pair wire group of line group, shielding quad or shielding one or more; needs according to the signal transmission; in the external protection 9 one or more groups non-shielding conductor group 7 can be set, this non-shielding conductor group 7 can be non-shielding single line group, non-shielding in line group, non-shielding quad, the multiple twisted pair wire of non-shielding or the group one or more.
The utility model principle: internal screening railway digital signal cable adopts screen to the cable signal quad, the master is disturbed the loop and disturbed the loop separate.Electromagnetic shielding adopts contrary magnetic or ferromagnetic material, and material adopts copper, steel or aluminium.Because quad has adopted screen outward, its outer metal tape shielding and built-in earial drainage line of adopting has higher fail safe, screen plays effective guide functions, guarantee the good reliable ground of shield, the induced current that electrical network, thunderbolt produce is earial drainage fast, prevents to disturb normal signal transmission.The utility model signal cable can satisfy railway signal automatic block system and station coding transmission of Information needs, efficiently solve with frequently with interference problem between cable transmission line group, guarantee traffic safety and computer control and detection, fail safe and the reliability of railway signal numeral, analog information transmission channel have been improved, realize the multinomial service integration transmission of low electric capacity broadband, satisfied railway transportation high speed, heavy duty, big density development requirement.

Claims (9)

1; a kind of internal screening railway digital signal cable; comprise external protection (9) and be arranged at least one interior shielding conductor group (6) of external protection (9); described shielding conductor group (6) comprises many eradication edge single lines (5) and is arranged on the described outer screen of edge single lines (5) that thoroughly does away with more; described screen comprises the inboard non-hygroscopic insulating barrier (4) that is provided with from inside to outside; metal screen layer (2) and outside non-hygroscopic insulating barrier (1); described insulated single wire (5) comprises cored wire conductor (22) and is arranged on the outer insulating barrier (19) of cored wire conductor (22), it is characterized in that: be provided with one or more earial drainage line (3) between described metal screen layer (2) and the described inboard non-hygroscopic insulating barrier (4).
2, internal screening railway digital signal cable according to claim 1 is characterized in that: be provided with at least one non-shielding conductor group (7) in the described external protection (9).
3, internal screening railway digital signal cable according to claim 1 and 2, it is characterized in that: described shielding conductor group (6) for shielding in line group, shielding quad or the multiple twisted pair wire group of shielding one or more, described non-shielding conductor group (7) be non-shielding to line group, non-shielding quad, non-shielding one or more in twisted pair wire group or the insulated single wire again.
4, internal screening railway digital signal cable according to claim 1 and 2 is characterized in that: be provided with at least one gasket for packing (8) in the described external protection (9).
5, internal screening railway digital signal cable according to claim 3 is characterized in that: described metal screen layer (2) is copper strips screen, aluminium strip screen, metal wire woven shield, aluminium-plastic tape screen or copper strips-steel band-steel band combination screen; Described inboard non-hygroscopic insulating barrier (4) and outside non-hygroscopic insulating barrier (1) are plastic tape or polyolefin bed course.
6, internal screening railway digital signal cable according to claim 5 is characterized in that: the copper strips in described copper strips screen or copper strips-steel band-steel band combination screen is the embossing copper strips.
7, according to claim 1 or 2 or 5 or 6 described internal screening railway digital signal cables, it is characterized in that: described insulating barrier (19) is to be constituted or constituted or be made of endodermis (16), middle foaming layer (17) and exodermis (18) by interior foaming layer (20) and exodermis (18) by solid layer (21).
8, internal screening railway digital signal cable according to claim 7 is characterized in that: described protective layer (9) comprises belting layer (14), alibate (13), inner covering (12), armour (11), oversheath (10) from inside to outside successively.
9, internal screening railway digital signal cable according to claim 7 is characterized in that: described protective layer (9) comprises belting layer (14), APL aluminum plastic laminate sheath (15), armour (11), oversheath (10) from inside to outside successively.
CN 200420086042 2004-09-30 2004-09-30 Railway digital signal cable with internal shielding layer Expired - Lifetime CN2729870Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420086042 CN2729870Y (en) 2004-09-30 2004-09-30 Railway digital signal cable with internal shielding layer

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Application Number Priority Date Filing Date Title
CN 200420086042 CN2729870Y (en) 2004-09-30 2004-09-30 Railway digital signal cable with internal shielding layer

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ID=35048643

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100403459C (en) * 2006-03-24 2008-07-16 吴江市盛信电缆有限责任公司 Termite-proof internal shielding railway digital signal cable
CN102800397A (en) * 2012-08-14 2012-11-28 江苏通鼎光电科技有限公司 Knitting and shielding type data transmission cable of multichannel transponder
CN103489519A (en) * 2013-09-10 2014-01-01 江苏通鼎光电科技有限公司 Railway digital signal cable with overall performance
CN105702375A (en) * 2014-12-12 2016-06-22 住友电气工业株式会社 Shielding cable
US9728303B2 (en) 2014-12-12 2017-08-08 Sumitomo Electric Industries, Ltd. Shielded cable
CN110277619A (en) * 2019-06-18 2019-09-24 深圳振华富电子有限公司 Balun transformer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100403459C (en) * 2006-03-24 2008-07-16 吴江市盛信电缆有限责任公司 Termite-proof internal shielding railway digital signal cable
CN102800397A (en) * 2012-08-14 2012-11-28 江苏通鼎光电科技有限公司 Knitting and shielding type data transmission cable of multichannel transponder
CN103489519A (en) * 2013-09-10 2014-01-01 江苏通鼎光电科技有限公司 Railway digital signal cable with overall performance
CN105702375A (en) * 2014-12-12 2016-06-22 住友电气工业株式会社 Shielding cable
US9728303B2 (en) 2014-12-12 2017-08-08 Sumitomo Electric Industries, Ltd. Shielded cable
CN105702375B (en) * 2014-12-12 2018-04-17 住友电气工业株式会社 Shielded cable
CN110277619A (en) * 2019-06-18 2019-09-24 深圳振华富电子有限公司 Balun transformer
CN110277619B (en) * 2019-06-18 2024-01-19 深圳振华富电子有限公司 Balun transformer

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Tianshui Railway Cable Works|Jiaozuo Railway Cable Factory|Dongqiang Co., Ltd., Jiangsu|Xi'an Xidian Optical Cable Co., Ltd.

Assignor: Tianshui Railway Cable Works|Jiaozuo Railway Cable Factory|Dongqiang Co., Ltd., Jiangsu|Xi'an Xidian Optical Cable Co., Ltd.

Contract fulfillment period: 2008.1.1 to 2012.7.12

Contract record no.: 2007990000101

Denomination of utility model: Internal shielded railway digital signal cable

Granted publication date: 20050928

License type: Cross licensing

Record date: 20071221

Assignee: Jinan Ruitong Railway Electric Service Co.,Ltd.

Assignor: Tianshui Railway Cable Works|Jiaozuo Railway Cable Factory|Dongqiang Co., Ltd., Jiangsu|Xi'an Xidian Optical Cable Co., Ltd.

Contract fulfillment period: 2007.12.18 to 2009.12.17

Contract record no.: 2007990000102

Denomination of utility model: Internal shielded railway digital signal cable

Granted publication date: 20050928

License type: exclusive license

Record date: 20071221

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.18 TO 2009.12.17

Name of requester: JINAN RUITONG RAILWAY ELECTRIC WORKS CO., LTD.

Effective date: 20071221

Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.1.1 TO 2012.7.12

Name of requester: TIANSHUI RAILWAY CABLE FACTORY, JIAOZUO TRACK CAB

Effective date: 20071221

C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20140930

Granted publication date: 20050928