CN203289032U - All-insulation shielding type copper pipe bus bridge - Google Patents
All-insulation shielding type copper pipe bus bridge Download PDFInfo
- Publication number
- CN203289032U CN203289032U CN2013202878914U CN201320287891U CN203289032U CN 203289032 U CN203289032 U CN 203289032U CN 2013202878914 U CN2013202878914 U CN 2013202878914U CN 201320287891 U CN201320287891 U CN 201320287891U CN 203289032 U CN203289032 U CN 203289032U
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- bus
- copper pipe
- insulation
- type copper
- bus bridge
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Abstract
Provided in the utility mode is an all-insulation shielding type copper pipe bus bridge. The bus bridge is characterized in that the bus bridge comprises a shielding insulation type copper pipe bus and a bus bracket; the bus bracket and the shielding insulation type copper pipe bus are connected by a bus fixed armour clamp; and a ground armour clamp is arranged at the middle portion of the shielding insulation type copper pipe bus. The provided bus bridge has the following beneficial effects: with utilization of the bus bridge, an adverse effect caused by a thermal expansion coefficient can be effectively avoided; and because the bus fixed armour clamp is manufactured by precision casting of pure aluminium, eddy occurrence caused by forming of an enclosed annular magnetic field by a permeability magnetic material can be effectively avoided, thereby effectively ensuring long-term, secure and reliable running of the bus.
Description
Technical field
The utility model relates to electric power supporting technology field, relates in particular to a kind of all insulation protected type copper tube as bus bridge.
Background technology
Along with the fast development of China's economy, electricity needs is increasing, and the transforming plant main transformer capacity is also increasing, and the situation of 10KV low-pressure side electric current ﹥ 2500A is to the utmost is common.Select equipment safe and reliable, that comprehensive benefit is high, ampacity is large to become one of Substation Design and the frequent content considered of run unit in transformer station.
All insulation shielding copper pipe bus is the novel product of the alternative traditional rectangular bus that occurs this year, bus-bars conductor adopts high-quality non-oxidation copper, impedance is little, surface area is large, and its surfaces externally and internally electric current distribution is even, because conductor is hollow, manage interior and the outer self-assembling formation cross-ventilation of pipe, good heat dissipation, temperature rise is low, and the dynamic and thermal stability performance is better than traditional rectangular bus bar greatly.In it, external insulation adopts the equal laminated structure of multi-layer capacity screen, and the main insulating layer material adopts the teflon oriented film of high-quality, and this material dielectric loss is little, flame-proof anti-aging, and electric property is excellent, and the theoretical work temperature is-250 ℃-+250 ℃, its useful life 〉=30 year.All insulation shielding copper pipe bus dielectric strength is high, the outer surface current potential is zero, can prevent effectively that the person from getting an electric shock or, because metal object, conduction are floating, toy contact and causes phase fault with bus, prevent that effectively dust gathers bus or specific condition causes insulation level decline to form " pollution flashover " because conducting electricity.
Compare with the traditional rectangular bus, the spaced apart of all insulation shielding copper pipe bus also can be dwindled greatly with the safe distance of miscellaneous equipment, and the bus mechanical strength is high, and span is large, can be directly and the equipment connections such as switch cubicle, reactor, and saving transformer station land area.
All insulation shielding copper pipe bus layout structure is succinct, and installation is convenient, and electric property is excellent, and is safe and reliable to operation, reduced the maintenance workload of run unit, and comprehensive benefit is remarkable.
The advantage of all insulation shielding copper pipe bus: 1. ampacity is large, and copper pipe bus is hollow conductor, and surface area is large, and Electric Field Distribution is even; 2. kelvin effect is low, and power loss is little, insulation copper pipe bus skin effect coefficient low (KF＜=1), and AC resistance is little, can fall the loss of bus power; 3. radiating condition is good, and temperature rise is low, and copper pipe bus is hollow conductor, and radiating condition is good, bus internal diameter air channel energy self-assembling formation cross-ventilation (in pipe with outside pipe, air pressure difference being arranged); 4. allowable stress is large, and mechanical strength is high, and the allowable stress of copper pipe bus is 4 times of rectangular bus bar, the short circuit current that performance load can be born is large, and mechanical strength is high, makes bus support span and strengthens, reduced corresponding post insulator, bus gold utensil and civil engineering framework foundation area; 5. electrical insulation properties is strong, and the insulation copper pipe bus adopts multi-layer sealed shielding insulation mode, the earthing of casing, and current potential is zero.Make Electric Field Distribution even, control current potential and restriction electric field; Avoid producing partial discharge at insulating surface, conduction Leakage Current and charging current, to characteristics such as the touch voltage of danger protect; 6. insulation copper pipe bus insulating material temperature used answers coefficient large, and the main insulation material adapts to works in-250 ℃～+ 250 ℃, good electric property and chemical stability are arranged, and dielectric loss is little, and is fire-retardant, ageing-resistant, long service life; 7. anti-electrical equipment shaking force is strong, directly copper pipe bus is fixed on steel framework or concrete support, cancels wall bushing and post insulator, has stronger shock resistance; 8. be not subjected to environmental interference, reliability is high, the sealing of insulation copper pipe bus shield, inside produces and has eliminated extraneous moisture without condensation, the caused ground connection of dust and foreign object and phase fault, and operation has the reliability of height, on year-on-year basis, rectangular bus bar is exposed in environment, accidentally contacted by people, animal and other things and ground connection and short circuit occur, and is unfavorable for safe operation.
For NORTHWEST CHINA area height above sea level, day and night temperature is large, and the large environmental quality of summer in the winter temperature difference is strengthened the pipe bus insulation, according to the on-site actual height above sea level of engineering, improves a rank correction (for example: height above sea level 2000 meters according to 2500 meters corrections).Bus gold utensil support has been carried out special optimal design, the harmful effect that slide rail type gold utensil assembly has effectively avoided thermal coefficient of expansion to bring.Bus bar fixing hardware adopts the smart casting of fine aluminium to form, and has effectively avoided permeability magnetic material to form closed ring-type magnetic field, causes the generation of eddy current, and busbar joint adopts special process, and contact area is large, connection is reliable, and temperature rise is lower than conductor.Above-mentioned a series of optimal design targetedly can guarantee effectively that the bus long-term safety moves reliably.
For mainly there being two kinds of all insulation protected type copper tube as bus bridge and all insulation formula copper tube as bus bridge being connected between all insulation shielding copper pipe bus and hyperbaric chamber.
The utility model content
Problem to be solved in the utility model is to provide a kind of all insulation protected type copper tube as bus bridge.
The technical solution of the utility model is as follows: a kind of all insulation protected type copper tube as bus bridge is characterized in that: comprise shielding insulation formula copper pipe bus and bus bar cupport, be connected by bus bar fixing hardware between described bus bar cupport and shielding insulation formula copper pipe bus; Described shielding insulation formula copper pipe bus middle part is provided with the ground connection gold utensil.
Further, described bus bar fixing hardware is that the fine aluminium casting forms.
Further, described shielding insulation formula copper pipe bus two ends are provided with expansion joint.
The beneficial effects of the utility model are: by the utility model all insulation protected type copper tube as bus bridge, the harmful effect of effectively having avoided thermal coefficient of expansion to bring, wherein bus bar fixing hardware adopts the casting of fine aluminium essence to form, effectively avoided permeability magnetic material to form closed ring-type magnetic field, cause the generation of eddy current, can guarantee effectively that the bus long-term safety moves reliably.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1, expansion joint, 2, shielding insulation formula copper pipe bus,
3, bus bar fixing hardware, 4, bus bar cupport,
5, ground connection gold utensil.
Embodiment
Below in conjunction with accompanying drawing, specifically execution mode of the present utility model is made brief description.
As shown in Figure 1, a kind of all insulation protected type copper tube as bus bridge, comprise shielding insulation formula copper pipe bus 2 and bus bar cupport 4, casts by fine aluminium the bus bar fixing hardware 3 that forms between described bus bar cupport 4 and shielding insulation formula copper pipe bus 2 and be connected; Described shielding insulation formula copper pipe bus 2 middle parts are provided with ground connection gold utensil 5.Described shielding insulation formula copper pipe bus 2 two ends are provided with expansion joint 1.
Working method: when the utility model is connected with hyperbaric chamber, bus bar fixing hardware 3 adopts the casting of fine aluminium essence to form, and has effectively avoided permeability magnetic material to form closed ring-type magnetic field, causes the generation of eddy current, can guarantee effectively that the bus long-term safety moves reliably.
Above an embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., within all should still belonging to patent covering scope of the present utility model.
Claims (3)
1. all insulation protected type copper tube as bus bridge is characterized in that: comprise shielding insulation formula copper pipe bus (2) and bus bar cupport (4), be connected by bus bar fixing hardware (3) between described bus bar cupport (4) and shielding insulation formula copper pipe bus (2); Described shielding insulation formula copper pipe bus (2) middle part is provided with ground connection gold utensil (5).
2. all insulation protected type copper tube as bus bridge according to claim 1, it is characterized in that: described bus bar fixing hardware (3) forms for the fine aluminium casting.
3. all insulation protected type copper tube as bus bridge according to claim 1, it is characterized in that: described shielding insulation formula copper pipe bus (2) two ends are provided with expansion joint (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202878914U CN203289032U (en) | 2013-05-24 | 2013-05-24 | All-insulation shielding type copper pipe bus bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202878914U CN203289032U (en) | 2013-05-24 | 2013-05-24 | All-insulation shielding type copper pipe bus bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203289032U true CN203289032U (en) | 2013-11-13 |
Family
ID=49545376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202878914U Expired - Fee Related CN203289032U (en) | 2013-05-24 | 2013-05-24 | All-insulation shielding type copper pipe bus bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203289032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298194A (en) * | 2016-09-23 | 2017-01-04 | 国家电网公司 | A kind of main transformer low-pressure line-outgoing row's structure |
-
2013
- 2013-05-24 CN CN2013202878914U patent/CN203289032U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106298194A (en) * | 2016-09-23 | 2017-01-04 | 国家电网公司 | A kind of main transformer low-pressure line-outgoing row's structure |
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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: 20131113 Termination date: 20160524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |