CN201477938U - Compound insulated bus - Google Patents
Compound insulated bus Download PDFInfo
- Publication number
- CN201477938U CN201477938U CN2009201919681U CN200920191968U CN201477938U CN 201477938 U CN201477938 U CN 201477938U CN 2009201919681 U CN2009201919681 U CN 2009201919681U CN 200920191968 U CN200920191968 U CN 200920191968U CN 201477938 U CN201477938 U CN 201477938U
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- bus
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- insulating
- ultraviolet
- external protection
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Abstract
The utility model relates to a compound insulated bus, which comprises a conductor layer, a fireproof heat-conducting layer, an uvioresistant external protective layer of an insulation sleeve and an insulated waterproof layer sleeved together sequentially. The utility model has the advantages of great current-carrying capacity, low skin effect, capability of strong current conveying, excellent radiation, low temperature rise, strong mechanical strength, big permitted span, reduced supporting points, lowered total cost, excellent insulation, stable electric property, simple and convenient installation, long service life, low-class maintaining work load, fire-proof property, high temperature resistance, water-proof property, humidity resistance and uvioresistance, so that the compound insulated bus can be used indoors, outdoors, and in severe open-air environment, produces no influence on the product property for long-term use, and is a substitute for traditional rectangular bus such as Cu BUS.
Description
Technical field:
The present invention relates to the compound inslation bus between each main transformer of transformer station.
Background technology
Along with the solid growth of national economy, the urban construction fast development is rapidly risen thereby promoting power consumption, and the straight line of power consumption rises, and makes the capacity of transforming plant main transformer depressor constantly increase, and the rated current of transformer low voltage outlet side also increases thereupon.
Domestic traditional situation: at present usually to connect to bus between the connection of 10kV power distribution room and each main transformer of transformer station be open type post insulator support multi-disc rectangular copper bus to the 10kV voltage side of 110kV, 220kV transforming plant main transformer.And along with increase, the main transformer 10kV bus bar side electric current of main transformer capacity constantly increases (surpassing 3000A), conventional open type rectangular copper bus current distributes and becomes inhomogeneous along with the increase of electric current, skin effect coefficient increases, the heating loss increases, and dynamic stability is difficult to satisfy the short circuit current requirement.And conventional open type rectangular copper bus is exposed in the air, be subjected to easily people, animal accidental bump to connect cause short circuit, post insulator is influenced by the filth of atmosphere also easily, causes decreasing insulating.
Foreign current situation: the isolated bus of external electric corporation such as ABB AB, Siemens Company mostly is used for being electrically connected between the switch cubicle or in the switch cubicle, basic is solid copper rod or aluminium bar, the electric current that passes through simultaneously is less, generally is no more than 4000A, and great majority are about 1500A.And in the low-pressure side of transformer station, developed country abroad, usually adopt copper pipe, copper rod (or aluminum pipe, aluminium bar) as conductor, a kind of bus product of external application insulation, also be referred to as " tubular cable ", it has can be by big electric current (12000A), high mechanical properties, good insulation performance performance and electric property, characteristic such as applied widely.
Summary of the invention
In order to overcome above-mentioned defective, the purpose of this invention is to provide the compound inslation bus between each main transformer of transformer station.
To achieve these goals, the present invention adopts following technical scheme:
The compound inslation bus, it comprises conductor layer, fire-resistant heat-conducting layer, anti-ultraviolet insulating sleeve external protection, insulating waterproof layer, conductor layer, fire-resistant heat-conducting layer, insulating waterproof layer and the socket in order of anti-ultraviolet insulating sleeve external protection.
Between above-mentioned insulating waterproof layer and anti-ultraviolet insulating sleeve external protection, be provided with by one deck heat conductive insulating layer and equalizing press layer combination at least.
Between above-mentioned equalizing press layer and anti-ultraviolet insulating sleeve external protection, insulating waterproof layer is set.
Between above-mentioned equalizing press layer and anti-ultraviolet insulating sleeve external protection, ground shield is set.
Between above-mentioned insulating waterproof layer and anti-ultraviolet insulating sleeve external protection, ground shield is set.
It is big that compound inslation bus of the present utility model has an ampacity, kelvin effect is low, can carry powerful electric current, good heat dissipation, temperature rise are low, the mechanical strength height allows span big, can reduce the strong point, reduce comprehensive cost, insulate, electric property is stable, installs simple and convenient, long service life, advantages such as maintenance workload is low, and fire-resistant, high temperature resistant, water-fast, humidity, uvioresistant can be used on indoor, outdoor and abominable open-air atmosphere, long-term use and do not influence properties of product, is the renewal product of traditional rectangular bus (as copper bar).
The superior function of isolated bus:
1, ampacity is big, and kelvin effect is low, can carry powerful electric current:
The compound inslation bus adopts hollow copper (aluminium) pipe to be conductors dedicated, and the circular surface of copper (aluminium) pipe has determined that its CHARGE DISTRIBUTION is even.Overcome the traditional rectangular bus because the corner angle that exist cause the electric field strength E distortion of rectangular bus bar edges and corners, local electric field strength E nonuniformity coefficient increases, and causes corona discharge easily under high voltage, thereby causes that the bus local pyrexia influences the situation of ampacity.Because the copper (aluminium) that is adopted pipe is hollow conductor, skin effect coefficient is little, and unit cross section ampacity is greater than conventional rectangular bus bar, and single-phase maximum amount is decided electric current can reach 12000A.
2, good heat dissipation, temperature rise are low.
Copper (aluminium) pipe that the compound inslation bus adopts is hollow conductor, and the bus two ends have the special-purpose ventilation hole that waterproof and anti-foreign matter enter, and forms the internal diameter air channel of nature, and the internal diameter air channel can form hot-air convection naturally when bus moves, and good heat dissipation, temperature rise are low.
3, mechanical strength height allows span big, can reduce the strong point, reduces comprehensive cost.
The allowable stress of compound inslation bus conductors dedicated is 4 times of rectangular bus bar, and bus adopts steel frame construction to support, thereby has stronger anti-vibration ability, makes its short-circuit electromotive force that can bear be far longer than rectangular bus bar.Copper pipe bus span maximum can reach 9 meters in addition, has reduced the required post insulator of conventional bus, bus gold utensil and civilwork engineering quantity etc., thereby has reduced the engineering comprehensive cost.
4, insulate, electric property is stable.
The main insulation material that the compound inslation bus adopts has advantages such as good electric property, fire-retardant, ageing-resistant, high temperature resistant, long service life, while, magnificent new peak section was by tackling key problems with relevant expert's common technique, insulating material originally induces one the heat conduction function, further improve the radiating condition of bus, reduced energy loss.
5, installation is simple and convenient.
The compound inslation busbar adopts the built-in transition joint and the connected mode of terminal fitting, and scientific structure design is reasonable, directly is fixed on the steelframe or on the concrete pillar according to bus specification apolegamy post insulator and gold utensil, installs simple and convenient.
6, long service life, maintenance workload is low.
Insulating material and outer jointing jacket material that the compound inslation bus is adopted have extraordinary chemical stability; material is high temperature resistant, low temperature resistant, uvioresistant, water-fast humidity; can under rugged environment, use for a long time and do not influence its performance; long product lifecycle reached more than 40 years, normally moved non-maintaining.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Further specify below in conjunction with accompanying drawing:
As shown in Figure 1; the compound inslation bus; it comprises conductor layer 1, fire-resistant heat-conducting layer 2, anti-ultraviolet insulating sleeve external protection 4, insulating waterproof layer 3, conductor layer 1, fire-resistant heat-conducting layer 2, insulating waterproof layer 3 and the socket in order of anti-ultraviolet insulating sleeve external protection 4.Make up by three layers of heat conductive insulating layer 5 and equalizing press layer 6 at insulating waterproof layer 3 and 4 settings of anti-ultraviolet insulating sleeve external protection.At equalizing press layer 6 and 4 of anti-ultraviolet insulating sleeve external protections insulating waterproof layer 7 is set.At insulating waterproof layer 7 and 4 of anti-ultraviolet insulating sleeve external protections ground shield 8 is set.
Claims (5)
1. compound inslation bus, it comprises conductor layer, fire-resistant heat-conducting layer, anti-ultraviolet insulating sleeve external protection, insulating waterproof layer, conductor layer, fire-resistant heat-conducting layer, insulating waterproof layer and the socket in order of anti-ultraviolet insulating sleeve external protection.
2. compound inslation bus according to claim 1 is characterized in that: be provided with between above-mentioned insulating waterproof layer and anti-ultraviolet insulating sleeve external protection by one deck heat conductive insulating layer and equalizing press layer combination at least.
3. compound inslation bus according to claim 2 is characterized in that: between above-mentioned equalizing press layer and anti-ultraviolet insulating sleeve external protection insulating waterproof layer is set.
4. compound inslation bus according to claim 2 is characterized in that: between above-mentioned equalizing press layer and anti-ultraviolet insulating sleeve external protection ground shield is set.
5. compound inslation bus according to claim 3 is characterized in that: between above-mentioned insulating waterproof layer and anti-ultraviolet insulating sleeve external protection ground shield is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201919681U CN201477938U (en) | 2009-08-20 | 2009-08-20 | Compound insulated bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201919681U CN201477938U (en) | 2009-08-20 | 2009-08-20 | Compound insulated bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201477938U true CN201477938U (en) | 2010-05-19 |
Family
ID=42414196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201919681U Expired - Lifetime CN201477938U (en) | 2009-08-20 | 2009-08-20 | Compound insulated bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201477938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538105A (en) * | 2014-12-03 | 2015-04-22 | 常州市拓源电缆成套有限公司 | Flame-retardant capacitance type composite insulated bus |
| CN105825951A (en) * | 2016-05-23 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Insulated tubular bus-bar |
-
2009
- 2009-08-20 CN CN2009201919681U patent/CN201477938U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538105A (en) * | 2014-12-03 | 2015-04-22 | 常州市拓源电缆成套有限公司 | Flame-retardant capacitance type composite insulated bus |
| CN105825951A (en) * | 2016-05-23 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Insulated tubular bus-bar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |