CN101789285A - Shielding communication signal cable for subway - Google Patents
Shielding communication signal cable for subway Download PDFInfo
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- CN101789285A CN101789285A CN200910219843A CN200910219843A CN101789285A CN 101789285 A CN101789285 A CN 101789285A CN 200910219843 A CN200910219843 A CN 200910219843A CN 200910219843 A CN200910219843 A CN 200910219843A CN 101789285 A CN101789285 A CN 101789285A
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- halogen
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Abstract
The invention provides a shielding communication signal cable for a subway, which is composed of a conductor, an insulating layer, a shielding layer and an outer jacket. The insulating layer adopts a material of cross-linked polyethylene; by utilizing the cross-linked technology, the polyethylene is changed from a linear chain macromolecule thermoplastic material into a molecular chain cross-linked three-dimensional thermosetting material in a reticular structure, thereby increasing the long-term using temperature. The overall shielding adopts a weaving structure, which not only solves the bending endurance under high temperature, but also exerts good performance of resisting interference of an electric field and a magnetic field. The outer jacket is made of halogen-free flame-retardant materials (cable materials) with the characteristics of LSOH (low smoke zero halogen) and LSLH (low smoke low halogen). The shielding communication signal cable has good performances of interference resisting, halogen-free flame retarding and the like.
Description
Technical field the invention belongs to the power cable technical field, relates to be used for the shielded communication cable of subway concretely.
Background technology is along with the arrival of information age, and greatly developing information technology and extensive use electronic computer has been the modern important symbol of track traffic.In the track signal system, adopt computer control, detection technique to realize multitask, many information real-time automatic collecting and processing, is being guaranteed under the safe prerequisite, improve automatization level and transportation dispatching commander efficient, to satisfy the requirement that track traffic at a high speed, efficiently reaches safe operation better.
At present, the electric wire that adopts traditional polyvinyl chloride, polyethylene process to produce owing to track traffic in China, very easily breaking out of fire during short circuit, smoke density is big during burning, and can produce a large amount of harmful halogen gass, and track traffic has personnel and concentrates, the volume of the flow of passengers is big, characteristics such as channel outlet is restricted, in case have an accident, power communication system is interrupted at once, and illumination, communication are all interrupted, this not only makes the people in the fire be difficult to flee from dangerous situation, also implements rescue to the fire fighter and makes troubles.
Summary of the invention is in order to overcome above-mentioned deficiency, and it is good that main purpose of the present invention aims to provide a kind of anti-tampering performance, and halogen-free flameproof is led the shielded communication cable that is used for subway of premium properties.
The technical solution adopted in the present invention is: the shielded communication cable that is used for subway is made of conductor, insulating barrier, screen, oversheath.Insulating barrier is to adopt cross-linking polyethylene materials, utilize crosslinking technological polyethylene to be changed into the space network thermosets of strand cross link from linear chain macromolecular thermoplastic material, improved long-term serviceability temperature (bringing up to 90 ℃) from original 70 ℃, good physical and mechanical properties before crosslinked polyethylene (XLPE) has not only kept polyethylene (PE) crosslinked, fabulous chemical stability and excellent dielectric property, at resisting environmental stress and cracking, anti-creep and other physical and mechanical properties all increase, very little when therefore burning to the harm of environment, meet the requirement of modern fire-fighting LSZH.Total shielding is to adopt woven structure, has both solved the resistance to bend(ing) of high temperature occasion, has good anti-electric field, magnetic interference performance again, prevents that especially the interference free performance between core and the core is especially outstanding.Under occasions such as low frequency, high frequency, hyperfrequency and frequency conversion, still has accurate interference free performance.Sheath is to adopt bittern-free flame-proof material: this CABLE MATERIALS has low smoke, zero halogen, the low cigarette characteristic of low halogen, and when fire took place, rate of propagation was slow, and smoke density is low, the visibility height, and the pernicious gas burst size is little, is convenient to personnel and withdraws.
Maximum operating temperature of the present invention: polyethylene insulation is no more than 70 ℃, crosslinked polyetylene insulatedly is no more than 90 ℃; Minimum ambient temperature: pvc sheath: fixedly lay-40 ℃, on-fixed lays-15 ℃, the laying temperature and should be not less than 0 ℃ of cable; Cable allows bending radius: the unarmored cable minimum is 6 times of the outside diameter of cable, and the armoured cable minimum is 12 times of the outside diameter of cable.
The present invention is applicable to underground railway track and locomotive transmission control and signal of communication, and it is good to have anti-tampering performance, is applicable to that also transmission detects, control and other occasions of communicating by letter.
Superiority such as it is anti-interference, counter-bending, ageing-resistant, fire-retardant that the present invention has.
Description of drawings
Fig. 1 is a simplified schematic diagram of the present invention;
Embodiment
The shielded communication cable schematic diagram that is used for subway shown in Figure 1 is made of conductor 1, insulating barrier 2, screen 3, oversheath 4.Insulating barrier 2 is to adopt cross-linking polyethylene materials, utilizes crosslinking technological that polyethylene is changed into the space network thermosets of strand cross link from linear chain macromolecular thermoplastic material, has improved long-term serviceability temperature; Total shielding 3 is to adopt woven structure, has both solved the resistance to bend(ing) of high temperature occasion, has good anti-electric field, magnetic interference performance again, prevents that especially the interference free performance between core and the core is especially outstanding.Sheath 4 is to adopt bittern-free flame-proof material: this CABLE MATERIALS has low smoke, zero halogen, the low cigarette characteristic of low halogen, and when fire took place, rate of propagation was slow, and smoke density is low, the visibility height, and the pernicious gas burst size is little, is convenient to personnel and withdraws.
Claims (2)
1. be used for the shielded communication cable of subway, it is characterized in that: constitute by conductor, insulating barrier, screen, oversheath.Insulating barrier is to adopt cross-linking polyethylene materials, utilizes crosslinking technological that polyethylene is changed into the space network thermosets of strand cross link from linear chain macromolecular thermoplastic material, has improved long-term serviceability temperature; Total shielding is to adopt woven structure; Sheath is to adopt bittern-free flame-proof material.
2. the shielded communication cable that is used for subway according to claim 1 is characterized in that: cable insulation core long-term work temperature can reach 90 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910219843A CN101789285A (en) | 2009-11-13 | 2009-11-13 | Shielding communication signal cable for subway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910219843A CN101789285A (en) | 2009-11-13 | 2009-11-13 | Shielding communication signal cable for subway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101789285A true CN101789285A (en) | 2010-07-28 |
Family
ID=42532456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910219843A Pending CN101789285A (en) | 2009-11-13 | 2009-11-13 | Shielding communication signal cable for subway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101789285A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112498A (en) * | 2014-07-03 | 2014-10-22 | 安徽江淮电缆集团有限公司 | Cat5e (category 5 enhanced) high-temperature-resistant special cable for aerospace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2531505Y (en) * | 2001-12-24 | 2003-01-15 | 天水铁路电缆工厂 | Low-smoke halogen-free flame-retardant rail transit signal cable |
| CN2599719Y (en) * | 2003-02-13 | 2004-01-14 | 河北宝丰线缆有限公司 | Environmental protection cross-linking polyethylene insulated fire resistant control cable |
| JP3514036B2 (en) * | 1996-05-28 | 2004-03-31 | 日立電線株式会社 | Flame retardant wires and cables |
| CN201153062Y (en) * | 2008-01-10 | 2008-11-19 | 江苏东强股份有限公司 | Fire isolation layer fire-proof subway and light rail signal cable |
| CN201166999Y (en) * | 2008-04-11 | 2008-12-17 | 上海熊猫线缆股份有限公司 | Heat-proof soft flame-retardant battery electrical wire for cars |
-
2009
- 2009-11-13 CN CN200910219843A patent/CN101789285A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3514036B2 (en) * | 1996-05-28 | 2004-03-31 | 日立電線株式会社 | Flame retardant wires and cables |
| CN2531505Y (en) * | 2001-12-24 | 2003-01-15 | 天水铁路电缆工厂 | Low-smoke halogen-free flame-retardant rail transit signal cable |
| CN2599719Y (en) * | 2003-02-13 | 2004-01-14 | 河北宝丰线缆有限公司 | Environmental protection cross-linking polyethylene insulated fire resistant control cable |
| CN201153062Y (en) * | 2008-01-10 | 2008-11-19 | 江苏东强股份有限公司 | Fire isolation layer fire-proof subway and light rail signal cable |
| CN201166999Y (en) * | 2008-04-11 | 2008-12-17 | 上海熊猫线缆股份有限公司 | Heat-proof soft flame-retardant battery electrical wire for cars |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104112498A (en) * | 2014-07-03 | 2014-10-22 | 安徽江淮电缆集团有限公司 | Cat5e (category 5 enhanced) high-temperature-resistant special cable for aerospace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Cao Hongbo Document name: Notification of Passing Preliminary Examination of the Application for Invention |
|
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Cao Hongbo Document name: Notification of Publication of the Application for Invention |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100728 |