CN2651923Y - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN2651923Y CN2651923Y CN 03280040 CN03280040U CN2651923Y CN 2651923 Y CN2651923 Y CN 2651923Y CN 03280040 CN03280040 CN 03280040 CN 03280040 U CN03280040 U CN 03280040U CN 2651923 Y CN2651923 Y CN 2651923Y
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- China
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- main body
- contact
- energy storage
- vacuum
- lever
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Abstract
The utility model provides a vacuum circuit breaker, which comprises a main body, a vacuum arc extinguishing chamber and a switching device to control a contact in the arc extinguishing chamber arranged on the main body. A static contact and a moveable contact are arranged from up to bottom inside the vacuum arc extinguishing chamber. The external side of the chamber is arranged with an upper and a lower conducting plate. The upper conducting plate is connected with the static contact. The switching device is composed of a four bar linkage mechanism, a cam to drive the four bar linkage mechanism and an energy storage mechanism connected with the cam. The upper end of an insulator is arranged with a conducting rod. The conducting rod is connected with the moveable contact in the vacuum arc extinguishing chamber and flexibly connected with the lower conducting plate. A switching spring is positioned between the vacuum arc extinguishing chamber and the conducting plate. Besides, the energy storage mechanism is connected with the cam through an energy storage shaft and is composed of an energy storage spring with one end fixed on the main body and the other end connected with an energy storage connecting lever. The energy storage connecting lever is fixed on the energy storage shaft. The utility model has the advantages of simple structure, small overall size and high reliability, and is suitable for substituting prior products in large scale.
Description
Technical field
The utility model relates to the switchgear that uses in a kind of electric power networks, particularly a kind of vacuum circuit-breaker of simple in structure, compactization.
Background technology
The digitlization day by day of the urban distribution network of 21st century has proposed new requirement to the various devices of formation wherein: intelligent, highly reliable, few maintenance, environmental protection etc.Important component part as the safe handling that is used for guaranteeing electrical network: circuit breaker faces such requirement too.Existing ring network power supply adopts sulphur hexafloride circuit breaker more, and its adopts sulphur hexafluoride filling arc control device, and sulphur hexafluoride can produce toxic gas in the course of the work, and the proportion of the toxic gas that produces is far longer than air, therefore, is unfavorable for environmental protection; In addition, because sulphur hexafluoride itself adopts high pressure sealing in arcing chamber, explosion hazard is arranged in use, directly the life security of endangering and coercing the people.Therefore, clearly be defined in control use sulfur hexafluoride gas in the high-voltage switch gear in the Kyoto Protocol that the United Nations's environmental protection in 1997 is drafted.
The utility model content
The purpose of this utility model provides a kind of novel evacuated circuit breaker that can effectively overcome the problems referred to above generation, and its science simple in structure, reliability height can not produce toxic gas, help environmental protection.
The purpose of this utility model is achieved in that it comprises main body, wherein: be installed on the main body vacuum interrupter be used for controlling arc control device in the folding brake gear that contacts of contact; Vacuum extinction is indoor to be provided with quiet, moving contact from top to bottom, and its outside is provided with upper and lower conductive plate, and last conductive plate links to each other with fixed contact; The folding brake gear comprises quadric chain, is used for driving the cam of quadric chain and the stored energy mechanism that links to each other with cam, on one end of quadric chain and the main body, contact by the separating brake semiaxis of magnet control, the other end connects insulator, the end of insulator is provided with screw rod, screw rod is set in interlinking lever end, screw rod interlinking lever end one end is fixed with nut, and screw rod is with the contact pressure spring outside the part between insulator and connecting rod; Insulator upper end is provided with conducting rod, and the indoor moving contact of conducting rod and vacuum extinction links to each other, and conducting rod is flexible coupling in lower conducting plate, is provided with between vacuum interrupter and conductive plate and cut-offs spring; Stored energy mechanism links to each other with cam by the energy storage axle, and it comprises that an end is fixed on the energy accumulation spring on the main body, and the other end of energy accumulation spring is connected on the energy storage connecting lever, and the energy storage connecting lever is fixed on the energy storage axle.
In the said structure, also be provided with one and be convenient to main body and be installed on push-pull device at fixed in the switch cubicle, it comprises the switch rotary panel that is rotationally connected with on the main body, is hinged with the interlocking push rod on it and inserts the pole of transfering to lever to link to each other with contact; The hinged interlocking rocking bar of the other end of interlocking push rod, interlocking rocking bar middle part is rotationally connected with main body, and the interlocking rocking bar other end links to each other with the separating brake semiaxis; Pole transfers to lever hinged with the contact insertion that is rotationally connected with on the main body, and contact inserts transfers to the lever free end to be provided with the breach that matches with the fixed axis of main body.
In the said structure, the rated voltage of vacuum interrupter is 12KV, and rated current is 630A, and rated short circuit drop-out current is 20KA, and specified heat-stable current is 20kA/2s, and rated short circuit making current is 50KA, and be 20000 mechanical endurance;
In the said structure, indoor quiet, the moving contact of vacuum extinction adopts chromiumcopper;
In the said structure, the maximum static pressure power of contact pressure spring is 150 kilograms.
In sum, adopt the utility model vacuum circuit-breaker, cooperates, can control folding lock speed and strength effectively, produce electric arc, influence use thereby contact is extinguished in contact or the time of releasing with quadric chain by stored energy mechanism and cam acting in conjunction; In addition, this apparatus structure is simple, and machine volume is little, the reliability height, and the suitable existing product that substitutes is used in a large number.
Description of drawings
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the profile of Fig. 1;
Fig. 3 is the structural representation of the utility model push-pull device at fixed;
Fig. 4 is installed on service position schematic diagram in the switch cubicle for the utility model;
Fig. 5 pulls out schematic diagram for the utility model from switch cubicle;
Fig. 6 interlocks rocking bar at locked position of coupler separating brake schematic diagram for the utility model.
Embodiment
As shown in the figure, the utility model comprises main body 1, main body 1 is positioned at switch cubicle 27 outer sides and is provided with handle 6, main body 1 lower end is provided with the slideway 15 that conveniently slips into switch cubicle 27, be provided with the motor 21 that is used to provide power in the main body 1, main body 1 is provided with vacuum interrupter 24 and is used for controlling the folding brake gear that contact contacts in the arc control device; Vacuum interrupter 24 is installed on an end that inserts switch cubicle 27, is provided with upper and lower conductive plate 11 from top to bottom near on the outer wall of insertion end, is provided with quiet, moving contact 23,22 in vacuum interrupter 24, and the last conductive plate 11 on the housing 8 links to each other with fixed contact 23; The folding brake gear comprises quadric chain 19, be used for driving the cam 17 of quadric chain 19 and the stored energy mechanism that links to each other with cam 17, on one end of quadric chain 19 and the main body 1, separating brake semiaxis 20 by magnet control contacts, the other end that is rotatably connected on switch spindle 14 connects insulator 12, the end of insulator 12 is provided with screw rod, screw rod is set in interlinking lever end, screw rod interlinking lever end one end is fixed with nut, screw rod is with contact pressure spring 13 outside the part between insulator 12 and connecting rod, its maximum static pressure power is 150 kilograms, its objective is in order to increase the static pressure after the contact closure, reduce resistance, avoid heating; Insulator 12 upper ends are provided with conducting rod 10, and the moving contact 22 in conducting rod 10 and the vacuum interrupter 24 links to each other, and conducting rod 10 usefulness are flexible coupling in lower conducting plate 11, are provided with between vacuum interrupter 24 and conductive plate 11 and cut-off spring 9; Stored energy mechanism links to each other with cam 17 by energy storage axle 18, it comprises that an end is fixed on the energy storage axle 5 on the main body 1, the other end of energy storage axle 5 is connected on the energy storage connecting lever, the energy storage connecting lever is fixed on the energy storage axle 18, during work, and cam 17 direction motion as shown in the figure, cam 17 contacts with quadric chain 19, and drive quadric chain 19 actions, even the end that quadric chain 19 links to each other with insulator 12 is raised, drive insulator 12 and rise; Because the operating characteristics of quadric chain 19, the rate of climb of insulator 12 beginnings is fast, strength is little, when the dynamic and static contact in the vacuum arc control device 24 contacts 22,23 soon, speed is slack-off, it is big that strength becomes, after two contacts contacted fully, speed was zero, and the closure function power that this moment, moving contact 22 made progress reaches maximum; When moving contact 22 rose, the spring 9 that cut-offs between vacuum interrupter 24 and conductive plate 11 was compressed; During separating brake, closed equilbrium position is destroyed, and cut-offfing spring 9 can be released, thereby makes dynamic and static contact 22,23 separate fast, and utilizes vacuum to extinguish the electric arc of generation.
In the said structure, also be provided with one and be convenient to the push-pull device at fixed that main body 1 is installed on switch cubicle 27, it comprises the switch rotary panel 2 that is rotationally connected with on the main body 1, is hinged with interlocking push rod 26 on it and inserts the pole 28 of transfering to lever 3 to link to each other with contact; The hinged interlocking rocking bar of the other end of interlocking push rod 26, interlocking rocking bar middle part is rotationally connected with main body 1, and the interlocking rocking bar other end links to each other with separating brake semiaxis 20; Pole transfers to lever 3 hinged with the contact insertion that is rotationally connected with on the main body 1, and contact inserts transfers to lever 3 free ends to be provided with the breach that matches with the fixed axis 4 of main body 1; When the utility model is installed, contact is inserted on the fixed axis 4 of transfering to lever 3 free end breach clip main bodys 1, promote Closing Switch rotary panel 2 to main body 1 direction then, the hinged contact in pole 28 ends inserts transfers to lever 3 to rotate, and finally utilizes the principle of lever to use less power that it is pushed in the switch cubicle 27; When pulling out the utility model, open switch rotary panel 2, the hinged interlocking rocking bar 25 of the other end of interlocking push rod 26 rotates, thereby drives 20 work of separating brake semiaxis, so that realize outage when separating brake, guarantees safety.
In the said structure, the rated voltage of vacuum interrupter 24 is 12KV, and rated current is 630A, and rated short circuit drop-out current is 20KA, and specified heat-stable current is 20kA/s, and rated short circuit making current is 50KA, and be 20000 mechanical endurance;
In the said structure, quiet, moving contact 23,22 in the vacuum interrupter 24 adopt chromiumcopper;
In the said structure, the maximum static pressure power of contact pressure spring 13 is 150 kilograms.
Claims (5)
1, a kind of vacuum circuit-breaker, it comprises main body, it is characterized in that: be installed on the main body vacuum interrupter be used for controlling arc control device in the folding brake gear that contacts of contact; Vacuum extinction is indoor to be provided with quiet, moving contact from top to bottom, and its outside is provided with upper and lower conductive plate, and last conductive plate links to each other with fixed contact; The folding brake gear comprises quadric chain, is used for driving the cam of quadric chain and the stored energy mechanism that links to each other with cam, on one end of quadric chain and the main body, contact by the separating brake semiaxis of magnet control, the other end connects insulator, the end of insulator is provided with screw rod, screw rod is set in interlinking lever end, screw rod interlinking lever end one end is fixed with nut, and screw rod is with the contact pressure spring outside the part between insulator and connecting rod; Insulator upper end is provided with conducting rod, and the indoor moving contact of conducting rod and vacuum extinction links to each other, and conducting rod is flexible coupling in lower conducting plate, is provided with between vacuum interrupter and conductive plate and cut-offs spring; Stored energy mechanism links to each other with cam by the energy storage axle, and it comprises that an end is fixed on the energy accumulation spring on the main body, and the other end of energy accumulation spring is connected on the energy storage connecting lever, and the energy storage connecting lever is fixed on the energy storage axle.
2, vacuum circuit-breaker as claimed in claim 1, it is characterized in that: also be provided with one and be convenient to main body and be installed on push-pull device at fixed in the switch cubicle, it comprises the switch rotary panel that is rotationally connected with on the main body, is hinged with the interlocking push rod on it and inserts the pole of transfering to lever to link to each other with contact; The hinged interlocking rocking bar of the other end of interlocking push rod, interlocking rocking bar middle part is rotationally connected with main body, and the interlocking rocking bar other end links to each other with the separating brake semiaxis; Pole transfers to lever hinged with the contact insertion that is rotationally connected with on the main body, and contact inserts transfers to the lever free end to be provided with the breach that matches with the fixed axis of main body.
3, vacuum circuit-breaker as claimed in claim 1 is characterized in that: the rated voltage of vacuum interrupter is 12KV, and rated current is 630A, rated short circuit drop-out current is 20KA, specified heat-stable current is 20KA/2s, and rated short circuit making current is 50KA, and be 20000 mechanical endurance;
4, as claim 1 or 3 described vacuum circuit-breakers, it is characterized in that: indoor quiet, the moving contact of vacuum extinction adopts chromiumcopper;
5, vacuum circuit-breaker as claimed in claim 1 is characterized in that: the maximum static pressure power of contact pressure spring is 150 kilograms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03280040 CN2651923Y (en) | 2003-09-29 | 2003-09-29 | Vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03280040 CN2651923Y (en) | 2003-09-29 | 2003-09-29 | Vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651923Y true CN2651923Y (en) | 2004-10-27 |
Family
ID=34332471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03280040 Expired - Lifetime CN2651923Y (en) | 2003-09-29 | 2003-09-29 | Vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651923Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320635B (en) * | 2008-06-30 | 2010-06-23 | 江苏大全凯帆电器有限公司 | Electromagnetic driven breaker |
| CN102044376A (en) * | 2011-01-05 | 2011-05-04 | 郑逸扬 | Low-voltage universal vacuum circuit breaker |
| CN102255257A (en) * | 2011-06-09 | 2011-11-23 | 上海天灵开关厂有限公司 | Circuit breaker/load switch with isolating distance |
| CN102856114A (en) * | 2011-06-29 | 2013-01-02 | Abb技术有限公司 | Dual current path for high rated currents |
-
2003
- 2003-09-29 CN CN 03280040 patent/CN2651923Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101320635B (en) * | 2008-06-30 | 2010-06-23 | 江苏大全凯帆电器有限公司 | Electromagnetic driven breaker |
| CN102044376A (en) * | 2011-01-05 | 2011-05-04 | 郑逸扬 | Low-voltage universal vacuum circuit breaker |
| CN102255257A (en) * | 2011-06-09 | 2011-11-23 | 上海天灵开关厂有限公司 | Circuit breaker/load switch with isolating distance |
| CN102255257B (en) * | 2011-06-09 | 2014-01-01 | 上海天灵开关厂有限公司 | Circuit breaker/load switch with isolating distance |
| CN102856114A (en) * | 2011-06-29 | 2013-01-02 | Abb技术有限公司 | Dual current path for high rated currents |
| CN102856114B (en) * | 2011-06-29 | 2016-10-05 | Abb技术有限公司 | Double-current path for high rated current |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130929 Granted publication date: 20041027 |