CN205230644U - Special insulating tube generating line of railway - Google Patents
Special insulating tube generating line of railway Download PDFInfo
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- CN205230644U CN205230644U CN201520384330.5U CN201520384330U CN205230644U CN 205230644 U CN205230644 U CN 205230644U CN 201520384330 U CN201520384330 U CN 201520384330U CN 205230644 U CN205230644 U CN 205230644U
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Abstract
Special insulating tube generating line of railway to effectively improve the current -carrying capacity and the electric property of insulating tube generating line, adapt to the needs that high -speed railway develops. Including the insulation protective layer of conductor with its annular surface of parcel, the conductor is hollow copper tubing or aluminum alloy tube, insulation protective layer by interior and outward by half conducting shell, insulating layer and shielding inoxidizing coating three -layer vacuum altogether crowded form integrative.
Description
Technical field
The utility model relates to electric railway 27.5kV system-specific electrical connection wire, particularly a kind of special 27.5kV buses of insulation tubes of high-speed railway being applied to traction substation and contact net system.
Background technology
High speed rail train operation speed is high, density is large, bullet train power can reach 9600kW ~ 21560kW compared with conventional railway, therefore need to possess larger power supply capacity, current high-speed railway supply power mode many employings AT supply power mode, rail traction substation 27.5kV side many employings flexible conductor steel reinforced aluminium conductor or cable connect, due to steel reinforced aluminium conductor maximum carrying capacity at 900A or cable maximum carrying capacity at 500A ~ 600A, meet the above electric current of single phase power supply arm load 2000A, many conductors are needed to be connected in parallel, the connector of many conductors, technique and the weak link being mounted for reliability service.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of railway special isolation pipe bus, effectively to improve ampacity and the electric property of buses of insulation tubes, adapts to the needs of Development of High Speed Railway.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
Railway special isolation pipe bus of the present utility model; comprise the insulating protective layer of conductor and its annular outer surface of parcel; it is characterized in that: described conductor is copper tube or the aluminium-alloy pipe of hollow, described insulating protective layer forms one by semiconductive layer, insulating barrier and shielding protection layer three layers of vacuum co-extrusion from inside to outside.
The beneficial effects of the utility model are, using hollow copper tube or aluminium-alloy pipe as conductor, ampacity at 2000A ~ more than 6000A, can effectively improve the ampacity of buses of insulation tubes, be particularly suitable for high-speed railway traction load power large, the loop that 27.5kV operating current is large; Insulating protective layer forms one by semiconductive layer, insulating barrier and shielding protection layer three layers of vacuum co-extrusion, air and impurity effectively can be avoided to be mixed into, make it have excellent electric property.
Accompanying drawing explanation
This specification comprises following two width accompanying drawings:
Fig. 1 is the schematic diagram of the utility model railway special isolation pipe bus;
Fig. 2 is the cross-sectional view of the utility model railway special isolation pipe bus.
Component shown in figure and corresponding mark: conductor 10, semiconductive layer 21, insulating barrier 22, shielding protection layer 23, transition joint 31, terminals 32.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
See figures.1.and.2, railway special isolation pipe bus of the present utility model, comprises the insulating protective layer of conductor 10 and its annular outer surface of parcel.Described conductor 10 is copper tube or the aluminium-alloy pipe of hollow, and described insulating protective layer forms one by semiconductive layer 21, insulating barrier 22 and shielding protection layer 23 3 layers of vacuum co-extrusion from inside to outside.
Conductor 10 adopts copper tube or the aluminium-alloy pipe of hollow, there is surface area large, conductive surface electric current distribution is even, the feature that ampacity is large, when meeting identical traction big current, existing outdoor four soft buses are substituted by a buses of insulation tubes, its rated short duration power-frequency withstand voltage 100kV (dry examination), 85kV (wet examination), 5min power frequency is done and is withstand voltagely reached 124kV, rated lightning impulse is withstand voltage is 250kV, the duration of short-circuit 2s, office's electric discharge pressure can be not more than 5PC by measured value under 1.73 times of rated voltages, insulation level reaches railway 27.5kV electric standard.
With reference to Fig. 1, end of bus bars is provided with pneumostome, bus internal diameter air channel energy self-assembling formation hot-air convection, get rid of from pneumostome end, the short circuit current that can bear is large, specified short time withstand current 63kA, Rated peak withstand current 160kA, be particularly suitable for the loop that high-speed railway traction load power is large, 27.5kV operating current is large.
Described semiconductive layer 21 adopts 70 degree of solid silicones (Polymethyl methacrylate+gas-phase silica+alkyl silicone oil); described insulating barrier 22 adopts cross-linked polytetrafluoroethylthrough insulating material; described shielding protection layer 23 adopts polyphosphazene polymer olefin material; three layers of vacuum co-extrusion shape all-in-one-piece insulating protective layer; air and impurity effectively can be avoided to be mixed into, to make it have excellent electric property.
With reference to the embodiment of Fig. 1, conductor 10 adopts the copper tube of hollow to adopt T2Y copper tube Φ 100 × 8, main insulation material is cross-linked polytetrafluoroethylthrough material, by three-layer co-extruded, conductor 10 and insulating barrier are reliably wrapped up, form a Φ 140, the all insulation mode of the tube type bus of long 3m, its rated current can reach 4000A, rated short duration power-frequency withstand voltage 100kV (dry examination), 85kV (wet examination), 5min power frequency is done and is withstand voltagely reached 124kV, rated lightning impulse is withstand voltage is 250kV, office's electric discharge pressure can be not more than 5PC by measured value under 1.73 times of rated voltages, specified short time withstand current 63kA, Rated peak withstand current 160kA, consider that electric power is installed span and can be accomplished 6 meters.
Actual tests value and conventional 35kV copper isolated bus are compared as follows:
Some principles of the above the utility model railway special isolation pipe bus that just explains through diagrams, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (3)
1. railway special isolation pipe bus; comprise the insulating protective layer of conductor (10) and its annular outer surface of parcel; it is characterized in that: the copper tube that described conductor (10) is hollow or aluminium-alloy pipe, described insulating protective layer forms one by semiconductive layer (21), insulating barrier (22) and shielding protection layer (23) three layers of vacuum co-extrusion from inside to outside.
2. railway special isolation pipe bus as claimed in claim 1, is characterized in that: described insulating barrier (22) adopts cross-linked polytetrafluoroethylthrough insulating material.
3. railway special isolation pipe bus as claimed in claim 2, it is characterized in that: described semiconductive layer (21) adopts 70 degree of solid silicones, described insulating barrier (22) adopts cross-linked polytetrafluoroethylthrough insulating material, and described shielding protection layer (23) adopts polyphosphazene polymer olefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520384330.5U CN205230644U (en) | 2015-06-05 | 2015-06-05 | Special insulating tube generating line of railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520384330.5U CN205230644U (en) | 2015-06-05 | 2015-06-05 | Special insulating tube generating line of railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205230644U true CN205230644U (en) | 2016-05-11 |
Family
ID=55905692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520384330.5U Active CN205230644U (en) | 2015-06-05 | 2015-06-05 | Special insulating tube generating line of railway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205230644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205827A (en) * | 2016-08-28 | 2016-12-07 | 威腾电气集团股份有限公司 | A kind of all-insulation tube bus |
-
2015
- 2015-06-05 CN CN201520384330.5U patent/CN205230644U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205827A (en) * | 2016-08-28 | 2016-12-07 | 威腾电气集团股份有限公司 | A kind of all-insulation tube bus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |