CN203376998U - Intelligent environmentally-friendly corrosion-resistant through ground wire - Google Patents
Intelligent environmentally-friendly corrosion-resistant through ground wire Download PDFInfo
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- CN203376998U CN203376998U CN201320444899.7U CN201320444899U CN203376998U CN 203376998 U CN203376998 U CN 203376998U CN 201320444899 U CN201320444899 U CN 201320444899U CN 203376998 U CN203376998 U CN 203376998U
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Abstract
The utility model discloses an intelligent environmentally-friendly corrosion-resistant through ground wire. The intelligent environmentally-friendly corrosion-resistant through ground wire includes a cable inner core and a cable outer layer wrapped on the cable inner core; the cable inner core comprises a control wire core and a plurality of power wire cores; the power wire cores, with the control wire core adopted as a center, are stranded with the control wire core, such that a multi-core cable can be formed; and the outer layer of the cable is a rare earth alloy sheath. The rare earth alloy sheath layer not only has conductivity, but also has corrosion resistance and environmentally-friendly property, and is not prone to aging; the volume resistivity of the rare earth alloy sheath is 1/7 of that of a lead sheath, and the strength of the rare earth alloy sheath is more than 10 times of that of the lead sheath, and therefore, the intelligent environmentally-friendly corrosion-resistant through ground wire can be used in a railway transportation environment where shock is violent and use condition is severe. The intelligent environmentally-friendly corrosion-resistant through ground wire of the utility model is mainly suitable for being used as through ground wires in railway signal system track circuit sections and cable laying in one ditch, and is also suitable for being used in a railway passenger dedicated integrated grounding system and being used as electrified railway electric traction return ground wires or grounding wires of electric equipment.
Description
Technical field
The utility model relates to field of cables, relates in particular to the corrosion-resistant Through ground wire of a kind of intelligent environmental protection type, for railway combined grounding system all fronts electromechanical equipment, unifies grounding connection.
Background technology
The Through ground wire technology is for the earliest for expanding on Dalian-Qinhuangdao Railway, and conductor adopts sheath copper, utilizes plumbous conductivity and Corrosion resistance can meet the requirement of ground wire, but the underground meeting of direct-burried pollutes soil, water, and does not meet national requirements for environmental protection.Until in August, 2012, adopt high-conductivity polymer plastic sheath Through ground wire always, but according to (2012) No. 359 literary compositions of the electric high letter of Ministry of Railways fortune point out " there is following problem in the high molecule plastic sheath run-through ground wire; the one, moment earial drainage not smooth, repeatedly occur to meet large electric current by the time sheath combustion phenomena appears; The 2nd, through using, observe, use for a long time the type Through ground wire, there is ageing and inferior situation in various degree in high polymer sheath, causes conductance to descend ".In view of the problem that macromolecular material sheath material Through ground wire occurs in utilization, for guaranteeing the high ferro application safety, the engineering project of bid and purchase must not used the type product without exception at present.
The utility model content
The purpose of this utility model is to provide a kind of intelligent environmental protection type corrosion-resistant Through ground wire, to solve the problems of the prior art.
To achieve these goals, the technical solution of the utility model is as follows:
The corrosion-resistant Through ground wire of intelligent environmental protection type, comprise the cable inner core and wrap in the outer cable outer layer of cable inner core, it is characterized in that, described cable inner core comprises controls core and some power cores, the power core is twisted into multicore cable centered by controlling core with it, cable outer layer is the rare earth alloy restrictive coating.
In an embodiment of the present utility model, the conductor of described power core adopts soft circular copper wire.
In an embodiment of the present utility model, the outermost layer twisting pitch after stranded is stranded external diameter 10～15 times, the internal layer twisting pitch is to be not more than 20 times of the stranded external diameter of internal layer.
In an embodiment of the present utility model, described power core outermost layer direction of lay is dextrad, and adjacent layer strand is on the contrary.
In an embodiment of the present utility model, the thickness of rare earth alloy restrictive coating is 1.2mm.
In an embodiment of the present utility model, the rare earth alloy sheath that described rare earth alloy restrictive coating is 8000 series.
The utlity model has mechanical strength high, the advantage of crooking ability and strong shock resistance.The rare earth alloy restrictive coating not only has conductivity, also have the requirement of anti-soil corrosion and environmental protection concurrently, be not easy agingly, rare earth alloy restrictive coating specific insulation is plumbous 1/7, intensity is more than 10 times of lead, can be used for shaking comparatively violent, the comparatively severe railway transportation environment of service condition.
The utility model is grasped the break-make situation of cable line by controlling core, realize Based Intelligent Control.
The utility model mainly is applicable to the Through ground wire of railway signal system track circuit section and cable laying in one ditch, also is applicable to the earth connection of special line for passenger trains integrated ground system, electric railway electric traction backflow ground wire or electric equipment.
Characteristics of the present utility model can be consulted the detailed description of the graphic and following better execution mode of this case and be obtained and be well understood to.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, further set forth the utility model below in conjunction with specific embodiment.
As shown in Figure 1, the corrosion-resistant Through ground wire of intelligent environmental protection type, comprise the cable inner core and wrap in the outer cable outer layer 20 of cable inner core.Wherein, the cable inner core comprises controls core 11 and six roots of sensation power core 12, and the power core is twisted into multicore cable centered by controlling core with it.Grasp the break-make situation of cable line by controlling core 11, realize Based Intelligent Control.The conductor of power core adopts soft circular copper wire.Outermost layer twisting pitch after stranded is stranded external diameter 10～15 times, the internal layer twisting pitch is to be not more than 20 times of the stranded external diameter of internal layer.Power core outermost layer direction of lay is dextrad, and adjacent layer strand is on the contrary.The permission single conductor continues, and the tensile strength at the place of continuing must not be less than without continuing 90% of conductor tensile strength, and test method should meet the GB/T4909.3 regulation.Stranded core does not allow whole strand to continue, and participates in the distance between adjacent two joints in stranded single conductor same layer and is not less than 300mm.
Cable outer layer is the rare earth alloy restrictive coating.In the present embodiment, the rare earth alloy sheath that the rare earth alloy restrictive coating is 8000 series.The rare earth alloy restrictive coating adopts the vertical bag of rare earth alloy argon arc welding to form, and the thickness of rare earth alloy restrictive coating is 1.2mm.Any point minimum thickness of rare earth alloy restrictive coating should be not less than 1.0mm, and test method is for adopting precision to be not less than the kind of calliper of 0.02 ㎜.The rare earth alloy restrictive coating is extruded and require to be coated closely, and the smooth surface rounding, without bubble, come unstuck into water, scratch phenomenon.The mechanical and physical performance of rare earth alloy sheath material and electrical property should meet the regulation of following table.
The mechanical and physical performance of rare earth alloy restrictive coating: specific insulation (20 ℃) is not more than 0.09 Ω .mm
2/ m; Tensile strength is not less than 260Mpa; Elongation at break is not less than 25%;
The environmental-protecting performance of rare earth alloy restrictive coating: mercury is not more than 1000mg/kg; Lead is not more than 1000mg/kg; Cr VI is not more than 1000mg/kg.
Rare earth alloy restrictive coating decay resistance: artificial atmosphere corrosion test salt mist test >=7 grades; Under usually solidifying ice-lolly part, the sulfur dioxide corrosion test is >=7 grades; The homogeneous corrosion test of metallic sheath laboratory.
Experimental condition: acid solution: HCL pH value 1.9-2.0
Salting liquid: 5%NaCL pH value 6.9-7.1
Aqueous slkali: NaCL pH value 11.0-11.1
Require :≤0.05nn/a
Above demonstration and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection range that the utility model requires is defined by appending claims and equivalent thereof.
Claims (6)
1. the corrosion-resistant Through ground wire of intelligent environmental protection type, comprise the cable inner core and wrap in the outer cable outer layer of cable inner core, it is characterized in that, described cable inner core comprises controls core and some power cores, the power core is twisted into multicore cable centered by controlling core with it, cable outer layer is the rare earth alloy restrictive coating.
2. the corrosion-resistant Through ground wire of intelligent environmental protection type according to claim 1, is characterized in that, the conductor of described power core adopts soft circular copper wire.
3. the corrosion-resistant Through ground wire of intelligent environmental protection type according to claim 1, is characterized in that, the outermost layer twisting pitch after stranded is stranded external diameter 10～15 times, the internal layer twisting pitch is to be not more than 20 times of the stranded external diameter of internal layer.
4. the corrosion-resistant Through ground wire of intelligent environmental protection type according to claim 1, is characterized in that, described power core outermost layer direction of lay is dextrad, and adjacent layer strand is on the contrary.
5. the corrosion-resistant Through ground wire of intelligent environmental protection type according to claim 1, is characterized in that, the thickness of rare earth alloy restrictive coating is 1.2mm.
6. the corrosion-resistant Through ground wire of intelligent environmental protection type according to claim 1, is characterized in that, the rare earth alloy sheath that described rare earth alloy restrictive coating is 8000 series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444899.7U CN203376998U (en) | 2013-07-24 | 2013-07-24 | Intelligent environmentally-friendly corrosion-resistant through ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444899.7U CN203376998U (en) | 2013-07-24 | 2013-07-24 | Intelligent environmentally-friendly corrosion-resistant through ground wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376998U true CN203376998U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320444899.7U Expired - Fee Related CN203376998U (en) | 2013-07-24 | 2013-07-24 | Intelligent environmentally-friendly corrosion-resistant through ground wire |
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| CN (1) | CN203376998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915172A (en) * | 2014-03-18 | 2014-07-09 | 新宇电缆集团股份有限公司 | High-low-temperature resistant double-shielding cable |
-
2013
- 2013-07-24 CN CN201320444899.7U patent/CN203376998U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103915172A (en) * | 2014-03-18 | 2014-07-09 | 新宇电缆集团股份有限公司 | High-low-temperature resistant double-shielding cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20160724 |