CN105274915A - Method for eliminating track system stray current - Google Patents
Method for eliminating track system stray current Download PDFInfo
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- CN105274915A CN105274915A CN201510833297.4A CN201510833297A CN105274915A CN 105274915 A CN105274915 A CN 105274915A CN 201510833297 A CN201510833297 A CN 201510833297A CN 105274915 A CN105274915 A CN 105274915A
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- rail
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- electrical current
- insulating coating
- stray electrical
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Abstract
The invention belongs to the city track traffic technology field and provides a method for eliminating track system stray current. According to the method, a surface of a steel rail of a track is coated with an insulation coating layer (5), the steel rail comprises a rail top (4), a rail head (3), a rail waist (2) and a rail bottom (1) from up to down, wherein the insulation coating layer (5) is continuously coated along the laying direction of the steel rail, a compact and continuous insulation protection layer is formed on the surface of the steel rail, the insulation coating layer (5) is coated at two sides of the rail head, the rail waist and the rail bottom or is coated at two sides of the rail waist (2) and the rail bottom (1), and a distance is formed between the upmost top end face of the insulation coating layer (5) and the rail top (4). Through the method, stray current is completely avoided, damage to tracks and public facility pipelines and buildings around the tracks caused by an unfavorable factor of electrochemical corrosion can be avoided.
Description
Technical field
The invention belongs to urban rail transit technology field, be specifically related to a kind of method eliminating rail system stray electrical current.
Background technology
In order to alleviate day by day serious traffic problems, urban rail traffic project is all being greatly developed in a lot of big and medium-sized cities, such as subway, light rail, tram, Novel rail transit system etc.Their adopts direct-current propulsion system and using rail as return wire.This electric current overwhelming majority can flow back into power cathode through rail, but also has sub-fraction to be leaked to railway roadbed and soil around from the position of track and ground defective insulation, forms stray electrical current.Can there is electrochemical corrosion to the communal facility pipeline around rail itself and track and building etc. in the existence of stray electrical current, reduce the application life of track, buried pipeline and building etc.; The special track for tram is for subway, light rail, and track imbeds underground completely, and the harm of its stray electrical current can not be ignored.
Existing solution roughly has two kinds, and one carries out electrochemical protection to protected object, such as takes drainage method; cathodic protection; anodic protection etc., to extend the working life of protected object, the method can cause interference to not taking the metal construction of drainage measure.Another kind of way protects block and sheath in the insulation of track arranged outside, increases the insulaion resistance between rail and periphery structure; Though second method can increase the insulaion resistance of track effectively, but insulation is protected block and sheath and fastener, insulated and protect in the gap of installing and can be formed in use procedure between block and sheath, under the environment of actual service conditions and humidity, still cannot solve the problem of stray electrical current.Above two kinds of methods all fail fundamentally to solve the problem that stray electrical current produces.
Summary of the invention
For fundamentally solving the problem of rail system stray electrical current, the object of the invention is to propose a kind of method eliminating rail system stray electrical current.
The present invention adopts following technical scheme for completing above-mentioned purpose:
Eliminate a method for rail system stray electrical current, at the surface of rails coating insulating coating; Described rail includes tread, rail head, the web of the rail and the flange of rail from top to bottom; Described insulating coating, along steel rail laying direction continuous coating, forms one deck densification and continuous print insulating protective layer at Rail Surface; Described insulating coating is coated on the both sides of rail head and the web of the rail and the flange of rail; Or, on the both sides that described insulating coating is coated in the web of the rail and the flange of rail; Between the most significant end face of insulating coating and tread, there is spacing; Described insulating coating is the high resistivity material that resistivity is not less than 20 megohms.
The thickness of described insulating coating is 50 ~ 500 μm.
Spacing between the most significant end face of insulating coating and tread is greater than 5mm.
The web of the rail described in rail or the flange of rail are coated with high abrasion coating, and described high abrasion coating is coated on described insulating coating, the abrasion that the friction in order to reduce between parts brings coating.
Described high abrasion coating is along the coating of interval, steel rail laying direction, and the corresponding web of the rail of described high abrasion coating or the flange of rail and other parts binding site are arranged.
Described high abrasion coating is along steel rail laying direction continuous coating.
Described insulating coating includes adhesives, inorganic reinforcement and surfactant.
Described adhesives is one or more in acetal, polyester, modified poly ester, polyurethane, polyimides.
Described inorganic reinforcement is one or more in alumina, carborundum, silicon nitride, silica, magnesia, mica.
Described surfactant is one or more in dodecyl sodium sulfate, softex kw, polyethylene glycol, tween.
The painting method of described insulating coating comprises blade coating, roller coat, dip-coating and spraying.
Described insulating coating before coating, needs to polish to coating surface or sandblasting or oil removing or processing of rust removing.
A kind of method eliminating rail system stray electrical current that the present invention proposes, on the surface of the rail of track, coating resistivity is not less than the high resistivity material of 20 megohms as insulating coating, described insulating coating except possess eliminate scattered current insulation function except, also can possess the function such as anticorrosion, water-fast, ageing-resistant, rub resistance, humidity resistance, resistance to weathering; Fundamentally avoid the generation of rail system stray electrical current, avoid the harm that the unfavorable factors such as electrochemical corrosion cause the communal facility pipeline around track and track and building etc., and the method implementing process is simple, efficiency is high, insulation effect is guaranteed, traditional insulation is avoided to protect the in-site installation of block and sheath component and complexity, reduce track insulation material cost and mounting cost widely, be conducive to the enforcement of large-scale mass.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
In figure: 1, the flange of rail, 2, the web of the rail, 3, rail head, 4, tread, 5, insulating coating, 6, high abrasion coating, 7, track gauge block, 8, wheel.
Detailed description of the invention
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of method eliminating rail system stray electrical current, at the surface of the rail of track coating insulating coating 5; Described rail includes tread 4, rail head 3, the web of the rail 2 and the flange of rail 1 from top to bottom; Described insulating coating 5 is along steel rail laying direction continuous coating; In this embodiment, described insulating coating 5 is coated on the both sides of rail head 3 and the web of the rail 2 and the flange of rail 1, and the spacing h between the most significant end face of insulating coating 5 and tread is 10mm; In this embodiment, the insulating coating surface near track gauge block 7 and the flange of rail 1 contact area be coated with high abrasion coating 6; Described insulating coating 5 is not less than the high resistivity material of 20 megohms for resistivity; Described insulating coating includes adhesives, inorganic reinforcement and surfactant; Described adhesives is the one in acetal, polyester, modified poly ester, polyurethane, polyimides; Described inorganic reinforcement is one or more in alumina, carborundum, silicon nitride, silica, magnesia, mica; Described surfactant is one or more in dodecyl sodium sulfate, softex kw, polyethylene glycol, tween; In this embodiment, described insulating coating 5 is for being mixed with the material of polyurethane resin, alumina, silica, mica, dodecyl sodium sulfate, by spraying (or blade coating, roller coat, dip-coating) mode, to be coated at the bottom of clean Rail 1 uniformly, the side of the web of the rail 2, rail head 3, after dry tack free 2h, apply the 2nd time, so repeatedly, continuous coating 3 times, coating layer thickness is 400um; Coating forms one deck densification and continuous print insulating protective layer in rail specific region, realize the problem fundamentally solving stray electrical current generation.
Fig. 2 is the structural representation of the embodiment of the present invention 2, and the agent structure of this embodiment is with embodiment 1, and in this embodiment, on the both sides that described insulating coating is coated in the web of the rail and the flange of rail, the spacing of the most significant end identity distance tread 4 of web of the rail coating zone is H
2for 8mm, H
3for 10mm.
Claims (9)
1. eliminate a method for rail system stray electrical current, on the surface of the rail of track coating insulating coating (5); Described rail includes tread (4), rail head (3), the web of the rail (2) and the flange of rail (1) from top to bottom; It is characterized in that: described insulating coating (5), along steel rail laying direction continuous coating, forms one deck densification and continuous print insulating protective layer at Rail Surface; Described insulating coating (5) is coated on the both sides of rail head and the web of the rail and the flange of rail, or, on the both sides that described insulating coating (5) is coated in the web of the rail (2) and the flange of rail (1); Between the most significant end face of insulating coating (5) and tread (4), there is spacing; Described insulating coating is the high resistivity material that resistivity is not less than 20 megohms.
2. a kind of method eliminating rail system stray electrical current as claimed in claim 1, is characterized in that: the thickness of described insulating coating is between 50-500um.
3. a kind of method eliminating rail system stray electrical current as claimed in claim 1, is characterized in that: the web of the rail described in rail or the flange of rail are coated with high abrasion coating (6), and described high abrasion coating (6) is coated on described insulating coating (5).
4. a kind of method eliminating rail system stray electrical current as claimed in claim 3, it is characterized in that: described high abrasion coating (6) is along the coating of interval, steel rail laying direction, and described high abrasion coating (6) the corresponding web of the rail or the flange of rail and other parts binding site are arranged.
5. a kind of method eliminating rail system stray electrical current as claimed in claim 3, is characterized in that: described high abrasion coating (6) is along steel rail laying direction continuous coating.
6. a kind of method eliminating rail system stray electrical current as claimed in claim 1, is characterized in that: described insulating coating includes adhesives, inorganic reinforcement and surfactant.
7. a kind of method eliminating rail system stray electrical current as claimed in claim 6, is characterized in that: described adhesives is one or more in acetal, polyester, modified poly ester, polyurethane, polyimides.
8. a kind of method eliminating rail system stray electrical current as claimed in claim 6, is characterized in that: described inorganic reinforcement is one or more in alumina, carborundum, silicon nitride, silica, magnesia, mica.
9. a kind of method eliminating rail system stray electrical current as claimed in claim 6, is characterized in that: described surfactant is one or more in dodecyl sodium sulfate, softex kw, polyethylene glycol, tween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833297.4A CN105274915B (en) | 2015-11-26 | 2015-11-26 | A kind of method for eliminating rail system stray electrical current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833297.4A CN105274915B (en) | 2015-11-26 | 2015-11-26 | A kind of method for eliminating rail system stray electrical current |
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| Publication Number | Publication Date |
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| CN105274915A true CN105274915A (en) | 2016-01-27 |
| CN105274915B CN105274915B (en) | 2017-07-18 |
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| CN201510833297.4A Active CN105274915B (en) | 2015-11-26 | 2015-11-26 | A kind of method for eliminating rail system stray electrical current |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939534A (en) * | 2017-01-23 | 2017-07-11 | 上海工程技术大学 | A kind of nano ceramic coat insulation rail |
| CN108797232A (en) * | 2018-06-05 | 2018-11-13 | 中铁二院工程集团有限责任公司 | Urban track traffic rail insulation constructs |
| CN109158281A (en) * | 2018-09-21 | 2019-01-08 | 武汉钢铁有限公司 | The construction system and method for the anti-stray electrical current coating of rail |
| CN111560801A (en) * | 2020-05-21 | 2020-08-21 | 陕西九域通创轨道系统技术有限责任公司 | Track traffic assembly for preventing and treating stray current corrosion influence and construction method thereof |
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|---|---|---|---|---|
| JPH05214701A (en) * | 1992-02-05 | 1993-08-24 | Dai Ichi High Frequency Co Ltd | Coated rail |
| CN2541504Y (en) * | 2002-04-22 | 2003-03-26 | 攀枝花钢铁有限责任公司钢铁研究院 | Corrosion-resistant railway rail |
| WO2004033795A1 (en) * | 2002-10-08 | 2004-04-22 | Hyperlast Limited | Cladding of rails |
| FR2939336A1 (en) * | 2008-12-04 | 2010-06-11 | Multispe France | Chemical products assembling and applying method for e.g. rail insulation/protective coating, involves utilizing chemical products, and co-operating chemical products together to form new base products |
| JP2012072565A (en) * | 2010-09-28 | 2012-04-12 | West Japan Railway Co | Railroad rail, rust-proofing processing method therefor, and fastening member |
| CN103498392A (en) * | 2013-09-11 | 2014-01-08 | 毛建红 | Damping steel rail |
| CN104725978A (en) * | 2015-03-02 | 2015-06-24 | 西安誉丰通号科技有限公司 | Heavy anticorrosive insulated conversion film and leakage improvement method of track circuit ballast bed |
-
2015
- 2015-11-26 CN CN201510833297.4A patent/CN105274915B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05214701A (en) * | 1992-02-05 | 1993-08-24 | Dai Ichi High Frequency Co Ltd | Coated rail |
| CN2541504Y (en) * | 2002-04-22 | 2003-03-26 | 攀枝花钢铁有限责任公司钢铁研究院 | Corrosion-resistant railway rail |
| WO2004033795A1 (en) * | 2002-10-08 | 2004-04-22 | Hyperlast Limited | Cladding of rails |
| FR2939336A1 (en) * | 2008-12-04 | 2010-06-11 | Multispe France | Chemical products assembling and applying method for e.g. rail insulation/protective coating, involves utilizing chemical products, and co-operating chemical products together to form new base products |
| JP2012072565A (en) * | 2010-09-28 | 2012-04-12 | West Japan Railway Co | Railroad rail, rust-proofing processing method therefor, and fastening member |
| CN103498392A (en) * | 2013-09-11 | 2014-01-08 | 毛建红 | Damping steel rail |
| CN104725978A (en) * | 2015-03-02 | 2015-06-24 | 西安誉丰通号科技有限公司 | Heavy anticorrosive insulated conversion film and leakage improvement method of track circuit ballast bed |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939534A (en) * | 2017-01-23 | 2017-07-11 | 上海工程技术大学 | A kind of nano ceramic coat insulation rail |
| WO2018133704A1 (en) * | 2017-01-23 | 2018-07-26 | 上海工程技术大学 | Steel rail insulated by nano ceramic coating |
| CN108797232A (en) * | 2018-06-05 | 2018-11-13 | 中铁二院工程集团有限责任公司 | Urban track traffic rail insulation constructs |
| CN109158281A (en) * | 2018-09-21 | 2019-01-08 | 武汉钢铁有限公司 | The construction system and method for the anti-stray electrical current coating of rail |
| CN111560801A (en) * | 2020-05-21 | 2020-08-21 | 陕西九域通创轨道系统技术有限责任公司 | Track traffic assembly for preventing and treating stray current corrosion influence and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105274915B (en) | 2017-07-18 |
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