CN204680573U - A kind of Medium voltage switch or circuit breaker arc extinguishing structure - Google Patents
A kind of Medium voltage switch or circuit breaker arc extinguishing structure Download PDFInfo
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- CN204680573U CN204680573U CN201520186869.XU CN201520186869U CN204680573U CN 204680573 U CN204680573 U CN 204680573U CN 201520186869 U CN201520186869 U CN 201520186869U CN 204680573 U CN204680573 U CN 204680573U
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- Prior art keywords
- circuit breaker
- medium voltage
- arc extinguishing
- voltage switch
- insulating trip
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Abstract
The utility model discloses a kind of Medium voltage switch or circuit breaker arc extinguishing structure, comprising one can insulating trip synchronization-moving with moving contact, this insulating trip when gate-dividing state between moving contact and fixed contact to isolate electric arc, be provided with link gear between this insulating trip and moving contact operating mechanism; After adopting this programme, Medium voltage switch or circuit breaker does not need vacuum interrupter, and also do not need to fill SF6 gas, cost is low, and arc extinguishing is quick.
Description
Technical field
The utility model relates to middle pressure electric field, under espespecially pure air under 10kV electric pressure, utilizes insulation board to insert the technical field of carrying out arc extinguishing between dynamic/static contact.
Background technology
Along with the carrying out of urban construction, skyscraper can be found everywhere, and becomes distribution and be all located at downstairs, according to fire-fighting requirements, becomes non-oil ultra high vacuum system required by distribution transforming, and according to the reasonable employment building area, distribution equipment should " miniaturization ".Commonly use device for switching and all can produce high-voltage arc when separating brake, electric arc is a kind of free gas of high temperature high conductivity, show as the high temperature spark of moment, conductive contact position can be burnt, cause very large destructiveness, serious meeting causes electric equipment to blast accident, and therefore arc extinguishing seems still for important.
The mode of device for switching extinguish arcs has following several mode, main relevant with surrounding medium, mainly contain arc extinction by elongating arc in atmosphere, in a vacuum, in SF6, the arc extinction mode of existing invention, almost has nothing to do with medium, can extinguish arcs in SF6 medium, in atmosphere also can extinguish arcs.But no matter which kind of arc extinguishing scheme, all has considerable restraint and restriction, can only be applied in some specific scheme, such as, the schemes such as air-blowing, magnetic blow-out, arc extinguishing grid pieces can be adopted in SF6, can because the greenhouse effect of SF6 gas and switchgear be to the requirement of sealing, unsuitable large-scale popularization; Air is merely by elongating arc, and under high-tension environment, product design volume is too large, does not have economic worth; Vacuum extinction, complex manufacturing, product itself is high to seal request, simultaneously because the break performance of vacuum extinction is too high, easily produces overvoltage in systems in which, impacts and vibrate to system.
Utility model content
The purpose of this utility model be to provide a kind of not high to medium requirements, structure simple, the structure of reliable arc extinguishing.
For achieving the above object, a kind of Medium voltage switch or circuit breaker arc extinguishing structure of the utility model, be provided with moving contact in switch and form with moving contact the fixed contact that switching is connected, wherein, also comprising one can insulating trip synchronization-moving with moving contact, this insulating trip telescopic stretching when gate-dividing state is placed between moving contact and fixed contact, is provided with link gear between this insulating trip and moving contact operating mechanism.
Described insulating trip is an insulation slide plate, has sliding sleeve in two sides, and two guide rails draw and are located on on-load switch sidewall, and the sliding sleeve of insulation slide plate is set on guide rail.
Described insulation slide plate dual-side hangs spring, and the other end of spring is hung on on-load switch sidewall along guide rail.
In on-load switch, be parallel to fixed contact be provided with insulating barrier, insulation slide plate leading section under gate-dividing state removable top to insulating barrier.
Described insulating barrier end is provided with nosing to insulation slide plate side, and this nosing is located at above insulation slide plate leading section under gate-dividing state.
After have employed such scheme, insulating trip is removed under link gear effect when on-load switch closes a floodgate, when separating brake, insulating trip is released, and moves quickly between moving contact and fixed contact under the action of the spring, and the electric arc that at this moment separating brake produces is equivalent to be stretched and extinguishes under insulating trip effect.
Accompanying drawing explanation
Fig. 1 is the utility model on-load switch "on" position cutaway view;
Fig. 2 is the utility model on-load switch gate-dividing state cutaway view;
Fig. 3 is the utility model insulation slide vane structure schematic diagram;
Fig. 4 is the utility model insulation slide plate vertical view when "on" position;
Fig. 5 is the utility model insulation slide plate vertical view when gate-dividing state.
Label declaration:
1, Medium voltage switch or circuit breaker; 2, upper static contact; 3, moving contact; 4, lower fixed contact; 5 arc extinguishing grid pieces; 6, insulating barrier; 61, nosing; 7, insulate slide plate; 71, sliding sleeve; 72, insulate slide plate leading section; 8, guide rail; 9, spring.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
Refer to Fig. 1 and Fig. 2, a kind of Medium voltage switch or circuit breaker arc extinguishing structure of the utility model, is provided with upper static contact 2, moving contact 3 and lower fixed contact 4 in switch 1, and upper static contact 2 and lower fixed contact 4 side are provided with arc extinguishing grid pieces 5.Moving contact 3 rotates to be switched on or switched off and realizes closing a floodgate and separating brake with the connection of upper static contact 2 and lower fixed contact 4.On-load switch 1 two side is provided with two groups of guide rails 8, and as shown in Figure 4,5, insulation slide plate 7 is movably set on guide rail 8 by sliding sleeve 71, and as shown in Figure 3, insulation slide plate 7 is provided with ear in side and rear portion, and sliding sleeve 71 is located at two sides.As shown in Figure 4,5, insulation slide plate 7 dual-side hangs spring 9, and the other end of spring 9 is hung on on-load switch 1 sidewall along guide rail 8.In on-load switch 1, be parallel to fixed contact be provided with insulating barrier 6, insulation slide plate leading section 72 under gate-dividing state removable top to insulating barrier 6, insulating barrier 6 end is provided with nosing 61 to insulation slide plate side, and this nosing 61 is located at above insulation slide plate leading section under gate-dividing state.
During use, as shown in Fig. 1,4, when closing a floodgate, moving contact 3 rotates and connects upper and lower static contact under operating mechanism drives, the link gear be connected with operating mechanism (can be gear or other kinds of drive, this interlock scheme is techniques well known, is not repeating herein) drive insulation slide plate 7 to move to the one end away from fixed contact, spring 9 is stretched.As shown in Fig. 2,5, when separating brake, moving contact 3 rotates and departs from upper and lower static contact under operating mechanism drives, insulation slide plate 7 is released, the top of fixed contact 4 is moved quickly under the effect of spring 9, insulation slide plate 7 forms an insulating cover with insulating barrier 6 and is located on fixed contact, has isolated the electric arc between dynamic/static contact, makes it to extinguish.After adopting this programme, do not need vacuum interrupter, also do not need to fill SF6 gas, cost is low, and arc extinguishing is quick, and certain the utility model also can be used for existing product to promote arc quenching effect.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent shapes or Structural Transformation; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a Medium voltage switch or circuit breaker arc extinguishing structure, be provided with moving contact in this Medium voltage switch or circuit breaker and form with moving contact the fixed contact closing a floodgate and be connected, it is characterized in that: also comprising one can insulating trip synchronization-moving with moving contact, this insulating trip when gate-dividing state between moving contact and fixed contact to isolate electric arc, be provided with link gear between this insulating trip and moving contact operating mechanism.
2. a kind of Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 1, is characterized in that: described insulating trip is an insulation slide plate, and insulation slide plate can move on guide rail, and switch is in gate-dividing state, and this insulation board is placed between fixed contact and moving contact.
3. a kind of Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 2, is characterized in that: described insulation slide plate dual-side hangs spring, and the other end of spring is hung on on-load switch sidewall along guide rail.
4. Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 1, is characterized in that: in switch, be parallel to fixed contact be provided with insulating barrier, insulating trip leading section under gate-dividing state removable top to insulating barrier.
5. Medium voltage switch or circuit breaker arc extinguishing structure as claimed in claim 4, is characterized in that: described insulating barrier end is provided with nosing to insulating trip side, and this nosing is located at above insulating trip leading section under gate-dividing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520186869.XU CN204680573U (en) | 2015-03-31 | 2015-03-31 | A kind of Medium voltage switch or circuit breaker arc extinguishing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520186869.XU CN204680573U (en) | 2015-03-31 | 2015-03-31 | A kind of Medium voltage switch or circuit breaker arc extinguishing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204680573U true CN204680573U (en) | 2015-09-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520186869.XU Active CN204680573U (en) | 2015-03-31 | 2015-03-31 | A kind of Medium voltage switch or circuit breaker arc extinguishing structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204680573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715947A (en) * | 2015-03-31 | 2015-06-17 | 厦门柏瑞科电气有限公司 | Arc-extinguishing structure of medium-voltage switch |
| CN108987140A (en) * | 2017-06-01 | 2018-12-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
-
2015
- 2015-03-31 CN CN201520186869.XU patent/CN204680573U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104715947A (en) * | 2015-03-31 | 2015-06-17 | 厦门柏瑞科电气有限公司 | Arc-extinguishing structure of medium-voltage switch |
| CN104715947B (en) * | 2015-03-31 | 2018-12-04 | 厦门柏瑞科电气有限公司 | A kind of arc extinguishing structure of Medium voltage switch or circuit breaker |
| CN108987140A (en) * | 2017-06-01 | 2018-12-11 | 泰科电子(深圳)有限公司 | Electrical contact system |
| CN108987140B (en) * | 2017-06-01 | 2024-04-02 | 泰科电子(深圳)有限公司 | Electrical contact system |
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