CN202736831U - Restriking-free high-voltage vacuum circuit breaker - Google Patents
Restriking-free high-voltage vacuum circuit breaker Download PDFInfo
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- CN202736831U CN202736831U CN 201220440286 CN201220440286U CN202736831U CN 202736831 U CN202736831 U CN 202736831U CN 201220440286 CN201220440286 CN 201220440286 CN 201220440286 U CN201220440286 U CN 201220440286U CN 202736831 U CN202736831 U CN 202736831U
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- restriking
- circuit breaker
- vacuum circuit
- main shaft
- vacuum
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Abstract
The utility model discloses a restriking-free high-voltage vacuum circuit breaker, which solves the problems that the current circuit breaker is high in the restriking rate and inconvenient in operation during working. The vacuum circuit breaker comprises a vacuum arc extinguishing device and an operational device, wherein the operational device is connected with the vacuum arc distinguishing device via an insulation pull bar, a kneeling buffer limiting mechanism is arranged inside the operational device, and comprises a stopper and an oil buffer which is fixed in the operational device in an inclined manner. The restriking-free high-voltage vacuum circuit breaker is reasonable in structural design, wherein a mechanical buffer limiting manner is used to replace traditional oil pressure type buffer limiting manner, and the buffer limiting mechanism is designed as a kneeling structure; and the vacuum circuit breaker not only can effectively prevent influences of external factors as external force impacts and polluted environments on the arc extinguishing device so that the restriking rate of the vacuum arc extinguishing device is zero, but also achieves the goals of ensuring completely opening of the vacuum circuit breaker and avoiding flashover occurrence in the vacuum arc extinguishing device; thus, the restriking-free high-voltage vacuum circuit breaker can be popularized and used.
Description
Technical field
The utility model relates to a kind of circuit breaker, specifically, relates to a kind of nothing high-pressure vacuum breaker of restriking.
Background technology
Vacuum circuit-breaker is one of switchgear common in the electrical system, its structure mainly comprises powder operation device, vacuum interrupter, buffering stop block and jointed gear unit etc., because existing vacuum circuit-breaker has minute, closing speed is fast, compact conformation, can fast and effeciently control the characteristics such as break-make of electrical system, therefore be widely used among the various high-voltage electric system.
Buffering stop block in the existing vacuum circuit-breaker is the hydraulic type buffering stop block, this buffering stop block is upright the setting in circuit breaker, drive the separating brake connecting lever by main shaft during breaker open operation and push down buffering stop block, just can reach the purpose of restriction open position.But, this kind buffer limit mode can be subject to very large owing to main shaft when the vacuum circuit-breaker separating brake is worked, and be the reaction couple of attenuation type, the anti-load of main shaft and link carrying thereof is larger, therefore the back and forth phenomenon of vibrations of vacuum interrupter moving contact can easily appear in vacuum circuit-breaker within certain period, and the vacuum space of separating brake diminishes apart from meeting within this period, metal dirt between the vacuum interrupter dynamic/static contact and the relative increase of particulate molecular concentration meeting, therefore, vacuum extinction is indoor when the vacuum space distance of separating brake relatively is reduced to a certain zero boundary flashing or breakdown phenomenon will occur, this phenomenon not only can diminish the useful life of vacuum circuit-breaker, but also be easy to cause security incident, close the increase of closing number of times along with circuit breaker, the probability that above-mentioned phenomenon occurs can strengthen.And use the hydraulic type buffering stop block that the average opening velocity of vacuum circuit-breaker is slowed down, thereby increase the probability of restriking of vacuum interrupter, and the operating efficiency of reduction vacuum circuit-breaker, therefore this kind structural design can have influence on the overall performance of vacuum circuit-breaker to a great extent.
Therefore, seek a kind of vacuum circuit-breaker of can realizing and when work, without the phenomenon of restriking the technical scheme of its opening velocity and simple operation occurs, improves, thereby reach the purpose of optimizing the vacuum circuit-breaker performance, just become the content of those skilled in the art's primary study.
The utility model content
The purpose of this utility model is to provide a kind of nothing high-pressure vacuum breaker of restriking, and mainly solves existing vacuum circuit-breaker high, the unhandy problem of rate of restriking when work.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Without the high-pressure vacuum breaker of restriking, comprise vacuum arc-extinguishing device, the powder operation device with being connected insulated tension pole and being connected with this vacuum arc-extinguishing device is provided with in the described powder operation device and kneels formula buffer limit mechanism.
Specifically, described powder operation device comprises mechanism case, and the main shaft, closing device, switching-off device, power set and the combined floodgate energy-stored spring that are installed on respectively this mechanism case inside, wherein, closing device and switching-off device all are connected with main shaft, and switching-off device also is flexibly connected with insulated tension pole, and power set then are connected with the combined floodgate energy-stored spring with closing device respectively; Described formula buffer limit mechanism and the switching-off device kneeled is flexibly connected.
Further, described switching-off device comprises the first connecting rod mechanism that is movably arranged between insulated tension pole and the main shaft, be connected with main shaft and also be connected with the second connecting rod mechanism of connecting plate, the separating brake connecting lever that is connected and also is rotatably connected to the first dwang with connecting plate, and the separating brake that is connected with this connecting plate takes off a mouthful electromagnet; Described formula buffer limit mechanism and the first connecting rod mechanism kneeled is flexibly connected.
Again further, described first connecting rod mechanism comprises that an end and insulated tension pole are flexibly connected the transmission arm that this insulated tension pole moves up and down in order to drive, the other end is connected with the transmission connecting plate, and is connected with this transmission connecting plate and is socketed in spindle drive arm on the main shaft; The described formula buffer limit mechanism of kneeling is connected with transmission arm.
Specifically, the described formula buffer limit mechanism of kneeling comprises by the oblique oil bumper that is fixed in mechanism case inside of installing rack, with the guide vane end stop that is connected the second dwang and is connected with transmission arm.
Wherein, described guide vane end stop is triangular structure, and its three angles all are set to circular arc; Be provided with through hole on one of them angle, described the second dwang passes this through hole.
Compared with prior art, the utlity model has following beneficial effect:
(1) the utility model reasonable in design, be skillfully constructed, utilize the mode of mechanical type buffer limit to replace traditional hydraulic type buffer limit mode, thereby so that the operation of whole mechanism is more reasonable, mechanical performance is better, can effectively prevent from comprising the external factor such as external impacts, filthy environment to the impact of vacuum arc-extinguishing device, and the utility model is in the process of work, the probability of restriking of its vacuum arc-extinguishing device is zero, has reached fully without the standard of restriking.
(2) buffering stop block in the conventional circuit breaker is upright setting, rely on the separating brake connecting lever directly to push down buffering stop block and realize separating brake, the utility model then becomes to kneel the formula structure with the buffer limit mechanism design, and oil bumper wherein is oblique setting, the design of oil bumper is so that guide vane end stop can be pushed down oil bumper better, therefore, than prior art, the formula buffer limit mechanism of kneeling of the present utility model can not only reduce the reaction force that oil bumper is brought by instantaneous impulse fast, it is minimum that the reaction energy that main shaft etc. is finally reached is reduced to, guarantee the thorough separating brake of vacuum circuit-breaker thereby reach, avoid occurring in the vacuum arc-extinguishing device purpose of flashing, and then the performance of raising vacuum circuit-breaker, and avoided causing security incident because of the reaction force that the oil bumper instantaneous impulse brings.
(3) the utility model is by the design to buffer limit mechanism, so that the performance of whole vacuum circuit-breaker promotes greatly, handling safety is reliable, satisfactory mechanical property, life-span is long, and can effectively reduce the separating brake bounce-back of circuit breaker, thereby prevent that the vacuum interrupter internal cause separating brake of vacuum circuit-breaker is so that the phenomenon that dynamic/static contact is restriked.
(4) the utility model cost performance is high, low cost of manufacture, and be convenient to produce, the utility model has widely application prospect and sizable market value in market, therefore, be suitable for promoting the use of.
Description of drawings
Fig. 1 is internal structure schematic diagram of the present utility model.
Fig. 2 is the end view of Fig. 1.
Fig. 3 kneels the structural representation that formula buffer limit mechanism is connected with other parts.
In the above-mentioned accompanying drawing, the component names that Reference numeral is corresponding is as follows:
The 1-mechanism case, 2-alignment pin, 3-gag lever post, 4-slide block, 5-the first connecting lever, 6-energy storage transmission wheel, 7-energy storage axle, 8-the first dwang, the sincere son of 9-, 10-combined floodgate energy-stored spring, 11-manual energy storage worm screw, 12-making electromagnet, 13-manual energy storage rotary turbine, 14-motor-driven sprocket wheel, 15-main shaft, 16-energy storage motor, 17-separating brake connecting lever, 18-driving chain, 19-guide vane end stop, 20-oil bumper, 21-the second connecting lever, 22-the second dwang, 23-energy storing drive sprocket wheel, the 24-connecting plate, 25-energy storage direction board, 26-upper bracket, the upper wire outlet seat of 27-, 28-vacuum interrupter, 29-insulating sleeve, the 30-lower carriage, wire outlet seat under the 31-, 32-insulated tension pole, the 33-transmission arm, 34-transmission connecting plate, 35-spindle drive arm, the 36-closing pawl, the 37-separating brake takes off a mouthful electromagnet, the 38-roller bearing, 39-semiaxis, 40-close/divide direction board, the 41-installing rack.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, and execution mode of the present utility model includes but not limited to the following example.
Embodiment
Shown in Fig. 1～3, the utility model is comprised of vacuum arc-extinguishing device and powder operation device two parts, and the two connects by an insulated tension pole 32.Vacuum arc-extinguishing device is same as the prior art, consists of by upper bracket 26, lower carriage 30, upper wire outlet seat 27, lower wire outlet seat 31, vacuum interrupter 28 and insulating sleeve 29, and its structure as shown in Figure 2.The upper end of vacuum interrupter 28 is provided with fixed contact, and the lower end then is provided with moving contact, and when dynamic and static contact contacted with each other, circuit breaker just was in "on" position, otherwise then circuit breaker is in gate-dividing state.Insulated tension pole 32 1 ends stretch in the insulating sleeve 29 and with moving contact and are connected, the other end then extend in the powder operation device with this powder operation device in parts be flexibly connected, specifically, powder operation device comprises mechanism case 1, and the main shaft 15 that is installed on respectively this mechanism case 1 inside, closing device, switching-off device, kneel formula buffer limit mechanism, power set and combined floodgate energy-stored spring 10, wherein, kneeling formula buffer limit mechanism and switching-off device is flexibly connected, closing device and switching-off device all are connected with main shaft 15, and power set then are connected with the combined floodgate energy-stored spring with closing device respectively and are connected.Insulated tension pole 32 is flexibly connected with switching-off device, this switching-off device also is same as the prior art, specifically, its described switching-off device comprises the first connecting rod mechanism that is movably arranged between insulated tension pole 32 and the main shaft 15, be connected with main shaft 15 and also be connected with the second connecting rod mechanism of connecting plate 24, the separating brake connecting lever 17 that is connected and also is rotatably connected to the first dwang 8 with connecting plate 24, and the separating brake that is connected with this connecting plate 24 takes off mouthful electromagnet 37; Described formula buffer limit mechanism and the first connecting rod mechanism kneeled is flexibly connected.First connecting rod mechanism and second connecting rod mechanism are same as the prior art, specifically, described first connecting rod mechanism comprises that an end is flexibly connected in order to drive the transmission arm 33 that this insulated tension pole 32 moves up and down, the other end is connected with transmission connecting plate 34 with insulated tension pole 32, and the spindle drive arm 35 that is connected with this transmission connecting plate 34, this spindle drive arm 35 is socketed on the main shaft 15 and rotates take this main shaft 15 as the center of circle, and the structure of first connecting rod mechanism and second connecting rod mechanism as shown in Figure 2; The described formula buffer limit mechanism of kneeling then comprises by the installing rack 41 oblique oil bumpers 20 that are fixed on mechanism case 1 inside, with the guide vane end stop 19 that is connected the second dwang 22 and is connected with transmission arm 33, this guide vane end stop 19 is triangular structure, and its three angles all are set to circular arc; Be provided with through hole on one of them angle, described the second dwang 22 passes this through hole, when transmission arm 33 rotates, will drive guide vane end stop 19 by the second dwang 22 rotates, because guide vane end stop 19 is triangular structure, therefore it can push down oil bumper 20 effectively, thereby plays the effect that limits open position, kneels the structure of formula buffer limit mechanism as shown in Figure 3.
Action relationships of the present utility model is as follows:
In the utility model, closing device and stored energy mechanism are prior art, and closing device mainly is made of making electromagnet 12, switch knob, closing coil and closing pawl 36; Stored energy mechanism is comprised of power set and combined floodgate energy-stored spring 10, and power set then comprise energy storage motor 16, sprocket rotation system, manual energy storage rotary turbine 13, manual energy storage worm screw 11 and energy storage axle 7, and the structure of these power set as shown in Figure 1.
The mode of stored energy mechanism energy storage can be divided into motor energy storage and manual energy storage, the operating process of motor energy storage is: plugged, open energy storage motor 16, then this energy storage motor 16 drives main shaft 15 rotations, 15 on main shaft drives the sprocket rotation system and rotates, this sprocket rotation system is comprised of motor-driven sprocket wheel 14, driving chain 18 and energy storing drive sprocket wheel 23, when energy storing drive sprocket wheel 23 rotates, the slide block 4 that alignment pin 2 promotes on the energy storage transmission wheel 6 rotates energy storage axle 7, and carries out energy storage by the first connecting lever 5 and the second connecting lever 21 stretching combined floodgate energy-stored springs 10.When energy storage axle 7 arrives the energy storage position, gag lever post 3 is depressed slide block 4 throws off energy storage axle 7 and sprocket rotation system, simultaneously sincere sub 9 withstand roller bearing 38 so that the fixing position of energy storage axle 7, the driver plate that is connected with energy storage axle 7 simultaneously drives 25 upsets of energy storage direction board and shows the mark of " energy storage ", and switch the power supply that auxiliary switch cuts off energy storage motor 16, this moment, circuit breaker was in the combined floodgate standby condition.
The difference of the operating process of manual energy storage and motor stored energy operation process only is: manual energy storage drives the sprocket rotation system by manual energy storage rotary turbine 13 and manual energy storage worm screw 11 and rotates.
Part is not emphasis of the present utility model owing to closing a floodgate, therefore do not elaborate the course of work of main explanation switching-off device below the utility model at this.
Connect separating brake and take off the power supply of mouthful electromagnet 37 or press the separating brake knob with hand, make closing pawl 36 and semiaxis 39 releases.At this moment, second connecting rod mechanism drives main shaft 15 and rotates toward clockwise direction, main shaft 15 drives successively spindle drive arm 35, transmission connecting plate 34 and transmission arm 33 and rotates when rotating, transmission arm 33 also drives respectively insulated tension pole 32 and moves and guide vane end stop 19 rotations when rotating, thereby insulated tension pole 32 moves and drives the moving contact that is attached thereto, and then the dynamic and static contact of vacuum interrupter 28 is separated, guide vane end stop 19 rotates and kills oil bumper 20 simultaneously, so just, realize the separating brake of circuit breaker, closed/divided the mark that direction board 40 demonstrates " dividing ".
In above-mentioned separating brake process, the effect of kneeling formula buffer limit mechanism is: prevent that one, circuit breaker is bad owing to excessive movement is drawn vacuum interrupter 28; Two, reduce the separating brake bounce of vacuum circuit-breaker.Because the cause of separating brake power and moment of inertia, add the design attitude of oil bumper 20, the instantaneous impulse that acts on the oil bumper 20 can produce corresponding reaction force acts on guide vane end stop 19, because guide vane end stop 19, the component effect of the second dwang 22, the reaction force that acts on the main shaft 15 is very little with regard to what become, therefore in the situation that separating brake power is certain, kneel the separating brake bounce that formula buffer limit mechanism can significantly reduce circuit breaker, Effective Raise the reliable breaking of circuit breaker, compare traditional hydraulic type buffer limit mode, the utility model adopts the mechanical formula buffer limit mode of kneeling not only to move fast, maintenance and debugging are convenient, and can effectively prevent from comprising external impacts, the external factor such as filthy environment guarantee that on the impact of vacuum arc-extinguishing device the probability that restriking appears in vacuum arc-extinguishing device is zero.
According to above-described embodiment, just can realize well the utility model.
Claims (6)
1. without the high-pressure vacuum breaker of restriking, comprise vacuum arc-extinguishing device, and be connected insulated tension pole (32) and the powder operation device that this vacuum arc-extinguishing device is connected, it is characterized in that: be provided with in the described powder operation device and kneel formula buffer limit mechanism.
2. the nothing according to claim 1 high-pressure vacuum breaker of restriking, it is characterized in that: described powder operation device comprises mechanism case (1), and the main shaft (15), closing device, switching-off device, power set and the combined floodgate energy-stored spring (10) that are installed on respectively this mechanism case (1) inside, wherein, closing device and switching-off device all are connected with main shaft (15), and switching-off device also is flexibly connected with insulated tension pole (32), and power set then are connected 10 with closing device with the combined floodgate energy-stored spring respectively) be connected; Described formula buffer limit mechanism and the switching-off device kneeled is flexibly connected.
3. the nothing according to claim 2 high-pressure vacuum breaker of restriking, it is characterized in that: described switching-off device comprises the first connecting rod mechanism that is movably arranged between insulated tension pole (32) and the main shaft (15), be connected with main shaft (15) and also be connected with the second connecting rod mechanism of connecting plate (24), the separating brake connecting lever (17) that is connected and also is rotatably connected to the first dwang (8) with connecting plate (24), and the separating brake that is connected with this connecting plate (24) takes off a mouthful electromagnet (37); Described formula buffer limit mechanism and the first connecting rod mechanism kneeled is flexibly connected.
4. the nothing according to claim 3 high-pressure vacuum breaker of restriking, it is characterized in that: described first connecting rod mechanism comprises that an end and insulated tension pole (32) are flexibly connected in order to driving the transmission arm (33) that this insulated tension pole (32) moves up and down, the other end is connected with transmission connecting plate (34), and is connected with this transmission connecting plate (34) and is socketed in spindle drive arm (35) on the main shaft (15); The described formula buffer limit mechanism of kneeling is connected with transmission arm (33).
5. the nothing according to claim 4 high-pressure vacuum breaker of restriking, it is characterized in that: the described formula buffer limit mechanism of kneeling comprises by the oblique inner oil bumper (20) of mechanism case (1) that is fixed in of installing rack (41), with the guide vane end stop (19) that is connected the second dwang (22) and is connected with transmission arm (33).
6. the nothing according to claim 5 high-pressure vacuum breaker of restriking, it is characterized in that: described guide vane end stop (19) is triangular structure, and its three angles all are set to circular arc; Be provided with through hole on one of them angle, described the second dwang (22) then passes this through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220440286 CN202736831U (en) | 2012-08-31 | 2012-08-31 | Restriking-free high-voltage vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220440286 CN202736831U (en) | 2012-08-31 | 2012-08-31 | Restriking-free high-voltage vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN202736831U true CN202736831U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220440286 Expired - Fee Related CN202736831U (en) | 2012-08-31 | 2012-08-31 | Restriking-free high-voltage vacuum circuit breaker |
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| Country | Link |
|---|---|
| CN (1) | CN202736831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531399A (en) * | 2013-10-21 | 2014-01-22 | 四川奇通电气成套设备有限公司 | Restriking-less vacuum circuit breaker based on automatic tripping amplitude adjustment |
-
2012
- 2012-08-31 CN CN 201220440286 patent/CN202736831U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103531399A (en) * | 2013-10-21 | 2014-01-22 | 四川奇通电气成套设备有限公司 | Restriking-less vacuum circuit breaker based on automatic tripping amplitude adjustment |
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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: 20130213 Termination date: 20210831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |