CN201408929Y - Air switch cabinet - Google Patents
Air switch cabinet Download PDFInfo
- Publication number
- CN201408929Y CN201408929Y CN2009200197283U CN200920019728U CN201408929Y CN 201408929 Y CN201408929 Y CN 201408929Y CN 2009200197283 U CN2009200197283 U CN 2009200197283U CN 200920019728 U CN200920019728 U CN 200920019728U CN 201408929 Y CN201408929 Y CN 201408929Y
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- CN
- China
- Prior art keywords
- gas tank
- breaker
- air switch
- switch cabinet
- vacuum circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model relates to a switchgear, in particular to a switchgear which adopts air insulation. The air switch cabinet comprises a cabinet body, wherein a secondary room, an air box, a mechanismroom and a cable room are arranged on the cabinet body, and the secondary room is positioned at the tip of the cabinet body; the air box and the mechanism room are arranged in the middle of the cabinet body, and the cable room is positioned at the lower end of the cabinet body; and the air box is of a sealing box body, and air is filled in the air box. The cabinet body has the obvious advantagesof small size, environment protection, long service life, strong adaptation to harsh environments, low failure rate, high reliability and expansibility and the like.
Description
Technical field
The utility model relates to a kind of switching device, relates in particular to the gas isolated switching device of a kind of employing.
Background technology
At present, along with The development in society and economy, a large amount of newly-built or suffered construction area restrictions of enlarging city power transformation require the floor space of power distribution equipment further to dwindle.For adapting to this requirement, power equipment develops to the direction of intellectuality, intensification, economization just gradually.The development that outstanding advantages such as volume is little because it has for prepackage type box-type substation technology, intensification degree height, investment is little, construction is fast obtain advancing by leaps and bounds.For adapting to box-type substation to the compact requirement reliably of high voltage switchgear, all kinds of novel high-pressure switchgears towards case sell of one's property product continue to bring out, be that the switch cubicle product of new generation of representative is the most outstanding wherein with the SF6 gas insulation switch cabinet, when it possessed all advantages of ordinary tap cabinet, volume was compact more.SF6 is as a kind of insulating gas, having lot of advantages, is a kind of colourless, tasteless, nontoxic, non-flammable inert gas, and excellent cooling arc characteristic is arranged, particularly under switchgear has the effect of high arc temperature, can produce higher cooling effect, avoid the combustibility of localized hyperthermia.The insulation property of SF6 gas are considerably beyond traditional oil, air insulation medium.It is used for electric equipment, and size that can reduction equipment improves apparatus insulated reliability, and based on above advantage, SF6 gas switch cabinet has obtained using widely at electricity market.Chinese patent as Granted publication on the 22nd March in 2006, notification number is CN2766426Y, it has announced a kind of box sulphur hexafloride circuit breaker cabinet, by cabinet, major loop switch and charged annex chamber, fuse chamber, four parts in operating mechanism chamber and cable vault are formed, major loop switch and charged annex chamber are seal cases, are full of SF6 gas in the seal case.
Though the SF6 gas insulation switch cabinet possesses many good characteristics, it is subjected to the physical characteristic of gas and the restriction of operating cost aspect also to have very important drawback, and what time following main existence is:
1.SF6 gas is the greenhouse gases with high stability, when it is emitted in the atmosphere, can impel terrestrial climate to change, and brings adverse effect to existent environment of people.In theory, SF6 gas can recycling, never allows to leak in the atmosphere.Yet along with in the extensive use of SF6 gas in global power industry, the SF6 quantity of gas leakage sharply rises.Though SF6 gas can not damage the ozone layer, global warming there is king-sized influence.For this reason, reduce the SF6 gas emissions, become a big problem to improve existent environment of people.And if gas the situation of leaking outside occurs and can descend, the element safe distance can not guarantee in the inflation cabinet, easily causes fault.
2.SF6 can be decomposed to form the low fluorine compounds of sulphur when arc discharge, this compound is not only poisonous, and can have corrosiveness to some insulating material and metal, can cause damage to its interior metal mechanism, influences product reliability.
3.SF6 could keep gaseous state when only being higher than more than-45 ° in temperature, under common service condition, it has the possibility of liquefaction, so SF6 can not and cross under the low-pressure and use at low temperature.So being filled with the high voltage switchgear of SF6 is out of use at the northern China extremely frigid zones, if ambient temperature reaches or near the gas liquefaction critical point, the insulation property of that gas will reduce significantly, and it is not enough to cause insulation thus, causes equipment major accident to occur.
4.SF6 gas insulation switch cabinet utilizes the cooling arc characteristic of the excellence of SF6 gas, make the isolating switch that is built in wherein have certain on-load connecting-disconnecting function, but the number of times that this switch allowed band load cut-offs is less, under the normal condition, its mechanical open and close times is about 2000 times, the on-load open and close times is about 200 times, no short circuit interruption function.And for reducing size and reducing cost, the general structure that adopts a plurality of functional unit common box types of switch cubicle, after a certain unit surpasses its life-span in the inflation casing, then move normal unit with other of its common case in the switch cubicle and also must change, cause the serious waste of resource.
The utility model content
Technique effect of the present utility model can overcome above-mentioned defective, and a kind of air switch cabinet is provided, and its volume is little, maintenance cost is low, reliability is high, safety and environmental protection.
For achieving the above object, the utility model adopts following technical scheme: it comprises cabinet, cabinet is provided with secondary chamber, gas tank, mechanism chamber, cable vault, secondary chamber is positioned at the top of cabinet, gas tank, mechanism chamber are arranged on the centre of cabinet, the cable vault is positioned at the lower end of cabinet, and gas tank is a seal case, fills air in the gas tank.
Based on of the requirement of modern electrical industry to high-tension switch cabinet, at some drawbacks that prior art exists, this device based on air insulation, make full use of the novel switched cabinet that composite insulating material is realized the reduction equipment size.Be provided with three-phase vacuum breaker, earthed switch in the gas tank, be connected by the contact connector between every phase vacuum circuit-breaker and the earthed switch.Wherein gas tank is the chief component of switch cubicle, and it adopts a kind of little permanent magnetic actuator vacuum circuit breaker apart, little earthed switch apart to substitute conventional switch cabinet on-load switch and earthing mechanism.Vacuum circuit-breaker is positioned at gas tank top, and earthed switch is positioned at the gas tank bottom, and gas tank turnover line adopts special-purpose integral type casing seat.
Be provided with the insulation full skirt between the contact connector between the adjacent phase and the two side of contact connector and gas tank.Pass through insulating barrier between the contact connector of three-phase and gas tank one sidewall at interval, connect by insulating support rod between the insulation full skirt, insulating support rod absorbs the impulsive force that the earthed switch divide-shut brake brings vacuum circuit-breaker, both the integral type casing seat can be supported, creepage distance and dielectric strength between the connector can be increased again.Between the adjacent phase of vacuum circuit-breaker by insulating barrier at interval, each insulating barrier connects with the corresponding insulating barrier support that is fixed on the vacuum circuit-breaker respectively, be that insulating barrier and insulating barrier support are connected and fixed, the insulating barrier support is fixed on the vacuum circuit-breaker again, can realize the fixing of insulating barrier so on the whole, prevent that insulating barrier is loosening, increase useful life.Gas tank end of incoming cables, leading-out terminal are respectively equipped with the integral type casing seat, the integral type casing seat inside of end of incoming cables, leading-out terminal is respectively equipped with input terminal, outlet terminal, input terminal is connected with vacuum circuit-breaker by connecting hose, outlet terminal is connected with vacuum circuit-breaker by the contact connector, is provided with the insulation full skirt between the integral type casing seat of connecting hose and end of incoming cables.The periphery of terminal adopts the insulating resin cast.With the dielectric strength between the insulating material wild phase, between relatively, all components and parts all are closed in the stainless steel casing.The cabinet base is installed in the gas tank bottom, and the cable vault is positioned at base inside.The cabinet front portion is the mechanism chamber, and the operation output shaft and the position indication of circuit breaker and earthed switch are installed, and the anti-interlock of five between the two.
Because this cabinet utilizes air and other insulating material as dielectric, so can not produce the harm to atmosphere, the inherent shortcoming of effectively having avoided SF6 gas to be had belongs to Green Product.
The cabinet of this device has that size is little, environmental protection, the life-span is long, adverse circumstances adaptability is strong, maintenance frequency is low, reliability is high, the high obvious advantage of autgmentability.
Description of drawings
Fig. 1 is a contour structures schematic diagram of the present utility model;
Fig. 2 is a forward inner structural representation of the present invention;
Fig. 3 is back to the internal structure schematic diagram among Fig. 2;
Fig. 3 is the end view of Fig. 2.
Embodiment
This device comprises cabinet, and cabinet is provided with secondary chamber 1, gas tank 4, mechanism chamber 2, cable vault 3, and secondary chamber 1 is positioned at the top of cabinet, gas tank 4, mechanism chamber 2 are arranged on the centre of cabinet, cable vault 3 is positioned at the lower end of cabinet, and gas tank 4 is a seal case, fills air in the gas tank 4.
Be provided with vacuum circuit-breaker 5, the earthed switch 12 of three-phase in the gas tank 4, be connected by contact connector 13 between the vacuum circuit-breaker 5 of every phase and the earthed switch 12.Be provided with insulation full skirt 9 between the two side of contact connector 13 between the adjacent phase and contact connector 13 and gas tank 4, insulation full skirt 9 connects by insulating support rod 11.Pass through insulating barrier 8 between the contact connector 13 of three-phase and the gas tank 4 one routine walls at interval.By insulating barrier 8 at interval, each insulating barrier 8 connects with the corresponding insulating barrier support 7 that is fixed on the vacuum circuit-breaker 5 respectively between the adjacent phase of vacuum circuit-breaker 5.Gas tank end of incoming cables, leading-out terminal are respectively equipped with integral type casing seat 6.Integral type casing seat 6 inside of end of incoming cables, leading-out terminal are respectively equipped with input terminal 14, outlet terminal 15, and input terminal 14 is connected with vacuum circuit-breaker 5 by connecting hose 10, are provided with insulation full skirt 9 between the integral type casing seat 6 of connecting hose 10 and end of incoming cables; Outlet terminal 15 is connected with vacuum circuit-breaker 5 by contact connector 13.
What this switch cubicle adopted is a kind of little of permanent magnetic actuator vacuum circuit breaker 5, vacuum circuit-breaker 5 volumes are little, the reliability height, and mechanical open and close times and on-load INTERRUPTION LIFE number of times are 5000 times, short trouble INTERRUPTION LIFE number of times is 100 times, can satisfy non-maintaining all the year round use.In addition, 5 pairs of environment requirement of this vacuum circuit-breaker are low, can be under-40 ℃～+ 55 ℃ environment operate as normal.
The gas tank 4 inner insulating barrier supports 7 that adopt the shape assembling of switch cubicle in order to support vacuum circuit-breaker 5 and earthed switch 12, and increase the gas tank structural strength.
Because it is little of product that vacuum circuit-breaker 5 and earthed switch 12 belong to, only gas can not satisfy insulating requirements as dielectric without foundation, in order to guarantee normal insulation level, the space mechanism of special insulation material in addition between alternate and phase ground, as the full skirt 9 that insulate, insulating barrier 8, insulating support rod 11, creepage distance and air insulation distance have been increased, smoothly by withstand voltage experiment.
Because the space compactness, the electrical fitting of vacuum circuit-breaker 5 and earthed switch 12 after particular design, with the fixed contact of earthed switch 12 with effectively combine together with the copper bar that is connected of vacuum circuit-breaker 5, satisfied space requirement and conduction requirement.
Vacuum circuit-breaker 5 of this switch cubicle and earthed switch 12 and related electric connector can be formed an electrical functional units, and, the present invention can be the multiple unit parallel running by adopting the common box type structural extended, also can satisfy the looped network operation instructions for use of electric power system, difference according to number of unit, product can be realized seriation, can satisfy the different requirements of different user to equipment fully.
Claims (9)
1. an air switch cabinet comprises cabinet, and cabinet is provided with secondary chamber, gas tank, mechanism chamber, cable vault, secondary chamber is positioned at the top of cabinet, and gas tank, mechanism chamber are arranged on the centre of cabinet, and the cable vault is positioned at the lower end of cabinet, it is characterized in that gas tank is a seal case, fill air in the gas tank.
2. air switch cabinet according to claim 1 is characterized in that being provided with in the gas tank three-phase vacuum breaker and earthed switch, is connected by the contact connector between every phase vacuum circuit-breaker and the earthed switch.
3. air switch cabinet according to claim 2 is characterized in that being provided with the insulation full skirt between the two side of contact connector between the adjacent phase and contact connector and gas tank.
4. air switch cabinet according to claim 3 is characterized in that between the contact connector of three-phase and gas tank one sidewall by insulating barrier at interval.
5. air switch cabinet according to claim 3, it is characterized in that insulating connects by insulating support rod between the full skirt.
6. air switch cabinet according to claim 2 is characterized in that between the adjacent phase of vacuum circuit-breaker by insulating barrier at interval, and each insulating barrier connects with the corresponding insulating barrier support that is fixed on the vacuum circuit-breaker respectively.
7. air switch cabinet according to claim 6 is characterized in that gas tank end of incoming cables, leading-out terminal are respectively equipped with the integral type casing seat.
8. air switch cabinet according to claim 7, the integral type casing seat inside that it is characterized in that end of incoming cables, leading-out terminal is respectively equipped with input terminal, outlet terminal, input terminal is connected with vacuum circuit-breaker by connecting hose, and outlet terminal is connected with vacuum circuit-breaker by the contact connector.
9. air switch cabinet according to claim 8 is characterized in that being provided with the insulation full skirt between the integral type casing seat of connecting hose and end of incoming cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200197283U CN201408929Y (en) | 2009-03-31 | 2009-03-31 | Air switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200197283U CN201408929Y (en) | 2009-03-31 | 2009-03-31 | Air switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408929Y true CN201408929Y (en) | 2010-02-17 |
Family
ID=41679876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200197283U Expired - Fee Related CN201408929Y (en) | 2009-03-31 | 2009-03-31 | Air switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408929Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854036B (en) * | 2009-03-31 | 2012-06-06 | 青岛特锐德电气股份有限公司 | Air switch cabinet |
| CN102986100A (en) * | 2010-06-18 | 2013-03-20 | 尼尔杰特有限公司 | Switchgear with single-phase insulation comprising air and screens |
| US10978256B1 (en) | 2013-03-15 | 2021-04-13 | Innovative Switchgear IP, LLC | Electrical switching device |
-
2009
- 2009-03-31 CN CN2009200197283U patent/CN201408929Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854036B (en) * | 2009-03-31 | 2012-06-06 | 青岛特锐德电气股份有限公司 | Air switch cabinet |
| CN102986100A (en) * | 2010-06-18 | 2013-03-20 | 尼尔杰特有限公司 | Switchgear with single-phase insulation comprising air and screens |
| CN102986100B (en) * | 2010-06-18 | 2016-07-06 | 尼尔杰特有限公司 | There is the switchgear of the single-phase isolation including air and screen |
| US10978256B1 (en) | 2013-03-15 | 2021-04-13 | Innovative Switchgear IP, LLC | Electrical switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100217 Termination date: 20120331 |