CN2221825Y - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN2221825Y CN2221825Y CN 94231395 CN94231395U CN2221825Y CN 2221825 Y CN2221825 Y CN 2221825Y CN 94231395 CN94231395 CN 94231395 CN 94231395 U CN94231395 U CN 94231395U CN 2221825 Y CN2221825 Y CN 2221825Y
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- CN
- China
- Prior art keywords
- insulation
- circuit breaker
- insulating
- vacuum circuit
- barrier
- 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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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a three-phase common box type vacuum circuit breaker used for a power supply system, which is composed of a casing, a conducting system, a supporting system, an insulating system and an operating system. The utility model is characterized in that in the insulating system, the insulating structure outside a vacuum arc-extinguish chamber is a composite insulating structure which is composed of an insulating barrier and an insulating casing spaced with limited spacing with each other, the barrier and the casing are made of unsaturated polyester glass fiber sheet-shaped membrane plastic, and the casing has the isolating and closing functions and the insulating performance. The utility model has the advantages of good insulating performance, small volume and light weight of the breaker and convenient installation and maintenance.
Description
The utility model relates to the switching device that a kind of power supply system is used.
At present, the pole vacuum circuit breaker of the three-phase combined type structure of power supply system use mainly is made up of conducting system, insulation system, operating system, back-up system and metal shell etc.In insulation system, the insulation of vacuum interrupter there is following several form usually: the one, vacuum interrupter is placed insulating oil; The 2nd, vacuum interrupter is placed hypobaric insulating gas; The 3rd, directly place in the metal shell body and utilize air insulation, its each phase vacuum interrupter is provided with insulating barrier between reaching over the ground.Utilize oil-filled or inflatable insulation, can reduce vacuum interrupter and reach distance to the ground between phase and phase, the circuit breaker volume is little, but its insulation tends to because of sealing bad or sealing property descends and leakage of oil or gas leakage to occur, this not only influences the reliability of circuit breaker, and oil spout takes place when electric power system breaks down easily, accident such as catch fire.Oil-filled insulation simultaneously increases the weight of circuit breaker greatly, is not easy to installation and maintenance; Air insulation then requires vacuum interrupter to reach distance to the ground between phase and phase should be enough big, and the volume of circuit breaker is big, also is not easy to installation and maintenance.Air-insulated effect is relatively poor, and parts damages are often arranged in the use.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and provide a kind of and both had the good insulation performance performance, and little, the lightweight pole vacuum circuit breaker of volume.
Technical solution of the present utility model is: the pole vacuum circuit breaker comprises conducting system, insulation system, operating system, back-up system and shell, its special character is the composite insulation structure of insulation system for forming at a distance of the insulation barrier and the insulation crust of certain intervals each other of vacuum extinction outdoor in the insulation system, is this composite insulation structure of air gap one insulation barrier one air gap, one insulation crust.Insulation barrier and insulation crust all adopt unsaturated polyester glass fibre sheet film plastics to make, and it not only has good anti-burning, anti-electric arc, anti-electric leakage and performances such as insulation, heat ageing, and be convenient to processing, cost is lower.Owing to adopted the insulating material and the composite insulation structure of this function admirable, improved the insulation property of circuit breaker, dwindle inner air gap, reduced the volume of circuit breaker, alleviated weight.Insulation barrier can adopt one or more layers, is preferably one deck.
The bearing at vacuum interrupter two ends is connected into frame support by the insulation board that is symmetricly set on the vacuum interrupter both sides.This insulation board and insulation barrier, insulation crust constitute composite insulation structure, with further increase insulation property with dwindle the air gap.Described bearing and insulation board all adopt unsaturated polyester glass fibre sheet film plastics to make.
Not increasing glass evacuated arc control device along under the condition of face length degree, make it have higher discharge voltage, can be at glass evacuated arc control device surface spraying sulphurated siliastic layer, to remedy the little defective of creepage distance.This is than increasing vacuum interrupter along the face length degree or install silicon rubber additional and all make things convenient for, and cost is lower.
Described conducting rod sleeve pipe is made up of interior cover and overcoat, and wherein interior cover is made by unsaturated polyester glass fibre sheet film plastics.The overcoat that full skirt and umbrella cover are formed is made by silastic material.
The utility model compared with prior art has following characteristics: adopt the shell of unsaturated polyester glass fibre sheet film plastics as circuit breaker, it not only has the effect that the circuit breaker internal structure is isolated from the outside and seals, but also has insulation property.Composite insulation structure is formed in it and barrier, air gap, has improved insulation property, and the body that reduced to open circuit is long-pending, has alleviated weight.Its handling ease is convenient to installation and maintenance.
Fig. 1 is the utility model body interior structural representation.
Fig. 2 is the partial schematic diagram of Figure 1A-A to section.
Fig. 3 is a shell schematic diagram of the present utility model.
Fig. 4 is the utility model extraction tube structural representation.
Be described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, 2, the pole vacuum circuit breaker mainly is made up of shell, conducting system, back-up system, insulation system, this five major part of operating system.Its adopts three-phase combined type structure, only illustrates the structure of a phase vacuum interrupter among Fig. 2, and other two phase structure is all identical with it.Shell is made up of loam cake (1) and casing (2), and it adopts unsaturated polyester glass fibre sheet film plastics press forming at high temperature.Can be provided with earth terminal, indicating device and desiccant box on it.Loam cake and casing interface are provided with sealing ring, are closure.Conducting system is to pass in and out conducting rod (3), (4), conductive clip (5), vacuum interrupter (6) and other connector mutually by the A that outer casing upper cover is introduced to connect and compose.B phase, C phase conductive structure are also identical with it.On A, C phase conducting rod, be provided with current transformer (7).The bearing (8) at the vacuum interrupter two ends in the back-up system, (9) are connected into frame support by insulation board (10), (11) that are positioned at the vacuum interrupter both sides, this plate is an arc, consistent with the external shape of vacuum interrupter, so that the vacuum interrupter each point is basic identical to the distance of insulation board.Insulation barrier in the insulation system is three flute profile casees (12), it adopts unsaturated polyester glass fibre sheet film plastics press forming at high temperature, three flute profile casees can be structure as a whole, also can be separate structure, be preferably three separate tanks, available each other insulated connecting piece (22) connects, and is convenient to like this install.The three-phase vacuum interrupter lays respectively in the groove, its all around and bottom are basic identical to the spacing of each side plate of flute profile case, promptly more than or equal to 20mm, this barrier connects with connector (23) and is fixed on the shell, and the spacing between barrier and the shell preferably is not less than 20mm.Can form this composite construction of air gap one frame support one air gap, one insulation barrier one air gap, one insulation crust in the vacuum extinction outdoor like this.Vacuum interrupter is glass evacuated arc control device, and its surface is coated with one deck sulphurated siliastic.Operating system is made up of manual and electronic two parts.Man-operating mechanism has manual energy storage, manual divide-shut brake and overcurrent protection function.Motor drive mechanism has electric energy-stored, electronic deciliter and manually energy storage, manual deciliter, overcurrent protection function.Total is made up of parts such as switching-in spring, energy-storage system, overcurrent release, divide-shut brake coil, manual divide-shut brake system, auxiliary switch and energy storage indications.Three-phase main shaft (13) in being arranged on circuit breaker, action bars (14), connecting lever (15), pull bar (16), the splitting lock cushioning parts such as (17), other functional unit all is arranged on the interior (see figure 3) of control box (18).Because other structure of above-mentioned four big systems is all identical with existing vacuum circuit-breaker, gives unnecessary details no longer one by one here.The insulating sleeve (see figure 4) of conducting rod constitutes by interior cover (19) with by the overcoat that full skirt (20), umbrella cover (21) are formed.Cover adopts unsaturated polyester glass fibre sheet film plastics hot forming in it.Overcoat is then made by silicon rubber.
Claims (6)
1, a kind of pole vacuum circuit breaker, it comprises conducting system, insulation system, operating system, back-up system and shell, it is characterized in that the composite insulation structure of insulation system for forming at a distance of the insulation barrier and the insulation crust of certain intervals each other of vacuum extinction outdoor in the insulation system, be this composite insulation structure of air gap one insulation barrier one air gap, one insulation crust.
2, pole vacuum circuit breaker according to claim 1 is characterized in that described insulation barrier and insulation crust adopt unsaturated polyester glass fibre sheet film plastics to make.
3, pole vacuum circuit breaker according to claim 1, it is characterized in that vacuum interrupter two end bearings are connected into frame support by the insulation board that is symmetricly set on the vacuum interrupter both sides, it and insulation barrier, insulation crust constitute composite insulation structure.
4, pole vacuum circuit breaker according to claim 3 is characterized in that described frame support adopts unsaturated polyester glass fibre sheet film plastics to make.
5, pole vacuum circuit breaker according to claim 1 is characterized in that the vacuum extinction chamber surface is coated with the sulphurated siliastic layer.
6, pole vacuum circuit breaker according to claim 1 is characterized in that the conducting rod sleeve pipe is made up of interior cover and overcoat, and cover is made by unsaturated polyester glass fibre sheet film plastics in it, and overcoat is made by silastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231395 CN2221825Y (en) | 1994-11-30 | 1994-11-30 | Vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231395 CN2221825Y (en) | 1994-11-30 | 1994-11-30 | Vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2221825Y true CN2221825Y (en) | 1996-03-06 |
Family
ID=33843238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94231395 Expired - Fee Related CN2221825Y (en) | 1994-11-30 | 1994-11-30 | Vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2221825Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404228B (en) * | 2008-11-14 | 2011-06-15 | 株洲庆云电力机车配件工厂 | Vacuum circuit breaker |
| CN103944098A (en) * | 2014-04-23 | 2014-07-23 | 宁波耐森电气科技有限公司 | Inflatable breaker cabinet |
-
1994
- 1994-11-30 CN CN 94231395 patent/CN2221825Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404228B (en) * | 2008-11-14 | 2011-06-15 | 株洲庆云电力机车配件工厂 | Vacuum circuit breaker |
| CN103944098A (en) * | 2014-04-23 | 2014-07-23 | 宁波耐森电气科技有限公司 | Inflatable breaker cabinet |
| CN103944098B (en) * | 2014-04-23 | 2016-06-15 | 宁波耐森电气科技有限公司 | A kind of inflated type breaker cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |