CN203444784U - High stability railway through ground wire - Google Patents
High stability railway through ground wire Download PDFInfo
- Publication number
- CN203444784U CN203444784U CN201320362716.7U CN201320362716U CN203444784U CN 203444784 U CN203444784 U CN 203444784U CN 201320362716 U CN201320362716 U CN 201320362716U CN 203444784 U CN203444784 U CN 203444784U
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- conductive layer
- ground wire
- layer
- railway
- brass
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Abstract
This utility model discloses a high stability railway through ground wire, comprising a first copper conductor positioned in the center. Six second copper conductors form a conductive layer by stranding on the outer surface of the first copper conductor. The stranding direction of the second copper conductor is the left and the stranding pitch is eight to twelve times of the diameter of the conductive layer. A brass layer with thickness being 0.9 to 1.2mm wraps the outer surface of the conductive layer. The gap between the conductive layer and the brass layer is from 0.1 to 0.2mm. The ratio between the thickness of the brass layer and the diameter of the outer conductive layer is 1:1.05-1.2. The high stability railway through ground wire disclosed by the utility model can resist corrosion by acid, alkali, and salt, has good fire-retardant performance, and prevent damages caused by mice and insects. Furthermore, the high stability railway through ground wire solves the problems and deficiencies in the usage of the through ground wire, improves the stability and reliability of the system, and improves the safety of the ground system of the railway.
Description
Technical field
The utility model relates to a kind of Through ground wire, relates in particular to a kind of high stability railway run-through ground line.
Background technology
Railway run-through ground line is a kind of earth cable that is applied to railway signal system, is the protective earth of system mask, lightning protection, electric equipment etc.Railway run-through ground line can make each working point electromotive force of large-scale Railway Electric system substantially be consistent, make system equipment grounding safety reliable, eliminate the current potential unsymmetrical current causing due to the potential difference between distinct device, realized the effective reliable protection to personnel and equipment.
The existing Through ground wire that is applied to the integrated ground of rail track mainly contains: lead sheath Through ground wire, aluminium (aluminium alloy) sheath run-through ground wire, conductive plastic jacket Through ground wire, above-mentioned various types of Through ground wire, in use all existent defect and deficiency: lead sheath Through ground wire is prohibited the pollution of environment country because of it, and progressively eliminates; Aluminium (aluminum alloy sheath) Through ground wire, because its decay resistance is poor or its decay resistance exists uncertainty, can not meet application requirements; Conductive plastic jacket Through ground wire because of its sheath cracking, the burning of overcurrent sheath or aging, overcurrent after conductor temp .-elevating cause degradation defect under plastic sheath electric conductivity, be there is a series of hidden danger and stopped using in system safety.
Summary of the invention
The utility model provides a kind of high stability railway run-through ground line, this high stability railway run-through ground line has the corrosive nature of stronger acidproof alkali salt, reliable and stable electric conductivity, good flame-retarding characteristic, the characteristic of the insect protected plague of rats, the problems and shortcomings that existing Through ground wire in use exists have been solved, improve the reliability of application system, thereby improved railway combined grounding system security performance.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high stability railway run-through ground railway run-through ground line, comprise the first copper conductor that is positioned at center, 6 the second copper conductors are stranded in described the first copper conductor outer surface formation conductive layer, this the second copper conductor direction of lay left-hand is while twisting pitch is 8 ~ 12 times of conductive layer diameter, and a thickness is that 0.9 ~ 1.2mm layer of brass is coated on described conductive layer outer surface; Gap between described conductive layer and layer of brass is 0.1 ~ 0.2mm.
In technique scheme, further improved technical scheme is as follows:
The diameter proportion of above-mentioned layer of brass thickness and conductive layer is 1:1.05 ~ 1.2.
Because technique scheme is used, the utility model compared with prior art has following advantages:
The utility model railway run-through ground line, it is positioned at first copper conductor at center, 6 the second copper conductors are stranded in described the first copper conductor outer surface formation conductive layer, this the second copper conductor direction of lay left-hand and twisting pitch are 8 ~ 12 times of conductive layer diameter, one thickness is that 0.9 ~ 1.2mm layer of brass is coated on described conductive layer outer surface, it has the corrosive nature of stronger acidproof alkali salt, reliable and stable electric conductivity, good flame-retarding characteristic, the characteristic of the insect protected plague of rats, the problems and shortcomings that existing Through ground wire in use exists have been solved, improved the reliability of application system, thereby improved railway combined grounding system security performance.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model high stability railway run-through ground line structural representation.
In above accompanying drawing: 1, the first copper conductor; 2, the second copper conductor; 3, conductive layer; 4, layer of brass.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1: a kind of high stability railway run-through ground line, comprise the first copper conductor 1 that is positioned at center, 6 the second copper conductors 2 are stranded in described the first copper conductor 1 outer surface formation conductive layer 3, these the second copper conductor 2 direction of lay left-hands and twisting pitch are its diameter 9 times, a thickness is that 0.95mm layer of brass 4 is coated on described conductive layer 3 outer surfaces; Gap between described conductive layer 3 and layer of brass 4 is 0.12 mm.
The diameter proportion of above-mentioned layer of brass 4 thickness and conductive layer 3 is 1:1.15.
Embodiment 2: a kind of railway run-through ground line, comprise the first copper conductor 1 that is positioned at center, 6 the second copper conductors 2 are stranded in described the first copper conductor 1 outer surface formation conductive layer 3, these the second copper conductor 2 direction of lay left-hands and twisting pitch are its diameter 11 times, a thickness is that 1.1mm layer of brass 4 is coated on described conductive layer 3 outer surfaces; Gap between described outer conducting layer 6 and layer of brass 4 is 0.18mm.
The diameter proportion of above-mentioned layer of brass 4 thickness and conductive layer 3 is 1:1.1.
Adopting structure is the lay configuration of 1+6 or 1+6+12, and twisted copper conductors adopts soft state copper cash, and the specific insulation of its material is not more than 0.017241 Ω mm
2/ m, the elongation at break of its single soft state copper cash is not less than 28%, direction of lay is left-hand, twisting pitch is its stranded diameter 8～12 times, guarantee electric transmission performance and mechanism's physical property of product.
The metal sheath of Through ground wire adopts brass (H62, H65, H68, H70, H72, H80, H85), one-ton brass (HSn62-1), aldubra (HAl67-2.5, HAl60, HAl59, HAl66), manganese brass (HMn58-2, HMn57, HMn55) and series material manufacture thereof.Consider the composite factors such as service life, processing technology, construction use, determined that its thickness range is 0.9mm ~ 1.2 mm, consider electrical conductivity performance and corrosion-resistant material behavior good in environment for use, determine that its specific insulation is not more than 0.09 Ω mm
2/ m.According to construction and instructions for use and sheath material behavior, determine that its sheath tensile strength is not less than 280MPa, elongation at break is greater than 28%;
The environmental-protecting performance of its sheath material meets the regulation of table 1.
The environmental protection characteristic of table 1 railway run-through ground line
| Harmful substance | Unit | Limit content value |
| Cadmium (Cd) | mg/kg | ≤100 |
| Plumbous (Pb) | mg/kg | ≤1000 |
| Mercury (Hg) | mg/kg | ≤1000 |
| Cr VI (Cr VI) | mg/kg | ≤1000 |
While adopting above-mentioned high stability railway run-through ground line, it is positioned at first copper conductor at center, 6 the second copper conductors are stranded in described the first copper conductor outer surface formation conductive layer, this the second copper conductor direction of lay left-hand and twisting pitch are 8 ~ 12 times of conductive layer diameter, one thickness is that 0.9 ~ 1.2mm layer of brass is coated on described conductive layer outer surface, it has the corrosive nature of stronger acidproof alkali salt, reliable and stable electric conductivity, good flame-retarding characteristic, the characteristic of the insect protected plague of rats, the problems and shortcomings that existing Through ground wire in use exists have been solved, improved the reliability of application system, thereby improved railway combined grounding system security performance.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (2)
1. a high stability railway run-through ground line, it is characterized in that: comprise the first copper conductor (1) that is positioned at center, 6 the second copper conductors (2) are stranded forms conductive layer (3) in described the first copper conductor (1) outer surface, this the second copper conductor (2) direction of lay left-hand and twisting pitch are 8 ~ 12 times of conductive layer (3) diameter, and a thickness is that 0.9 ~ 1.2mm layer of brass (4) is coated on described conductive layer (3) outer surface; Gap between described conductive layer (3) and layer of brass (4) is 0.1 ~ 0.2mm.
2. railway run-through ground line according to claim 1, is characterized in that: the diameter proportion of described layer of brass (4) thickness and conductive layer (3) is 1:1.05 ~ 1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320362716.7U CN203444784U (en) | 2013-06-24 | 2013-06-24 | High stability railway through ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320362716.7U CN203444784U (en) | 2013-06-24 | 2013-06-24 | High stability railway through ground wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444784U true CN203444784U (en) | 2014-02-19 |
Family
ID=50095812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320362716.7U Expired - Fee Related CN203444784U (en) | 2013-06-24 | 2013-06-24 | High stability railway through ground wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203444784U (en) |
-
2013
- 2013-06-24 CN CN201320362716.7U patent/CN203444784U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140219 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |