CN105788954A - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN105788954A CN105788954A CN201610324612.5A CN201610324612A CN105788954A CN 105788954 A CN105788954 A CN 105788954A CN 201610324612 A CN201610324612 A CN 201610324612A CN 105788954 A CN105788954 A CN 105788954A
- Authority
- CN
- China
- Prior art keywords
- push rod
- groove
- contact
- cavity
- circuit breaker
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Landscapes
- Push-Button Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a vacuum circuit breaker. The vacuum circuit breaker of the invention includes a shell with a cavity arranged therein, a fixed contact, a moving contact, a switching moving contact, an operation portion, a telescopic pin and a pushing rod; a partition plate is arranged in the shell; the partition plate divides the cavity into an upper cavity and a lower cavity; the fixed contact is arranged at the top of the upper cavity; the moving contact is arranged below the fixed contact; the moving contact is fixed to the upper part of the pushing rod; the switch moving contact is arranged at the bottom of the lower cavity; the bottom of the pushing rod extends into the operation portion; two sides of the inner side wall of the lower cavity of the shell are symmetrically provided with a first trench and a second trench; the lower part of the pushing rod is provided with a slide way; and the telescopic pin is arranged in the slide way. According to the vacuum circuit breaker of the invention, when the moving contact contacts with the fixed contact, supporting portions at two ends of the telescopic pin extend into the first trench, the lower side surfaces of the outer end portions of the supporting portions contact with the lower side surface of the first trench, and therefore, the tripping of the vacuum circuit breaker can be prevented when the vacuum circuit breaker is in a switched-on state. The vacuum circuit breaker has the advantages of simple structure and low manufacturing cost.
Description
Technical field
The invention belongs to power domain, particularly relate to a kind of vacuum circuit breaker.
Background technology
In a power distribution system, existing vacuum circuit breaker is arranged with locking device at gate-dividing state, avoid maloperation, but in order to ensure the normal operation of vacuum circuit breaker, being also equipped with locking device in prior art under vacuum circuit breaker "on" position generally adopts Magnet to lock chopper, solve the brake hop of chopper, but the impact that the magnetic of Magnet is easily subject to external magnetic field causes locking device to lose efficacy.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of vacuum circuit breaker, it is ensured that vacuum circuit breaker solves the brake hop of chopper under "on" position, it is ensured that the normal operation of vacuum circuit breaker.
nullIn order to solve above-mentioned technical problem，The present invention includes: be internally provided with the housing of cavity、Static contact、Moving contact、Switch movable contact、Operating portion、Telescopic pin and push rod，Described enclosure interior is provided with dividing plate，Cavity is divided into upper plenum and lower cavity by described dividing plate，Described dividing plate is provided with pilot hole，Described push rod upper end is inserted in pilot hole，Described static contact is arranged on the top of upper plenum，Described moving contact is arranged on the lower section of static contact，Described moving contact is fixed on push rod top，Described switch movable contact is arranged on the bottom of lower cavity，Described operating portion is the cylinder that upper end is uncovered，The base plate of operating portion is fixed on the middle part of switch movable contact，It extend in operating portion bottom described push rod，It is provided with cavern part bottom described push rod，Described switch movable contact head is inserted in cavern part and is slidably connected with push rod，Both sides, cavity medial wall are symmetrically arranged with under housing the first groove and the second groove，First groove is positioned at the second groove top，The downside of described first groove and the second groove is vertical with push rod axis，The angle of the second groove upper side and push rod axis is acute angle，Described telescopic pin includes two support portions and connects the elastic telescopic element of two support portions，Downside, outer end, described support portion is vertical with push rod axis，Outer end, described support portion upper side and push rod angle are acute angle，Described push rod bottom is provided with slideway，Described slideway is vertical with push rod axis，Described telescopic pin is arranged in slideway，Described handle portion sides is symmetrically arranged with through hole，The support portion at described telescopic pin two ends is stretched out from described through hole，When moving contact contacts with static contact，The base contact of switch movable contact upper surface and cavern part，The support portion at telescopic pin two ends is stretched in the first groove，Downside, outer end, support portion contacts with the first groove downside，When moving contact separates with static contact，Switch movable contact upper surface separates with the bottom of cavern part，Operating portion bottom surface contacts with cavity floor under housing，Downside, outer end, support portion contacts with the downside of the second groove，The upper surface of the through hole in handle portion sides contacts with outer end, described support portion upper side.
As a further improvement on the present invention, described elastic telescopic element is helical spring.
The invention has the beneficial effects as follows: the vacuum circuit breaker of the present invention, when moving contact contacts with static contact, the support portion at telescopic pin two ends is stretched in the first groove, downside, outer end, support portion contacts with the first groove downside, ensure that vacuum circuit breaker prevents the brake hop of chopper under "on" position, present configuration is simple, and low cost of manufacture ensures again the normal operation of vacuum circuit breaker.
Accompanying drawing explanation
Structural representation when Fig. 1 is that in the present invention, vacuum circuit breaker closes a floodgate；
Fig. 2 is structural representation during vacuum circuit breaker separating brake in the present invention；
Fig. 3 is the partial enlarged drawing of part A in Fig. 1.
Wherein: 1, static contact, 2, housing, 3, operating portion, 4, moving contact, 5, cavern part, 6, telescopic pin, 7, securing member, 8, switch movable contact, the 9, first groove, the 10, second groove, 11, push rod, 61, support portion, 62, elastic telescopic element.
Detailed description of the invention
nullSuch as Fig. 1、Fig. 2、Shown in Fig. 3，The present invention includes: the present invention includes: be internally provided with the housing 2 of cavity、Static contact 1、Moving contact 4、Switch movable contact 8、Operating portion 3、Telescopic pin 6 and push rod 11，Described housing 2 is internally provided with dividing plate，Cavity is divided into upper plenum and lower cavity by described dividing plate，Described dividing plate is provided with pilot hole，Described push rod 11 upper end is inserted in pilot hole，Described static contact 1 is arranged on the top of upper plenum，Described moving contact 4 is arranged on the lower section of static contact 1，Described moving contact 4 is fixed on push rod 11 top，Described switch movable contact 8 is arranged on the bottom of lower cavity，Described operating portion 3 is the cylinder that upper end is uncovered，The base plate securing member 7 of operating portion 3 is fixed on the middle part of switch movable contact 8，It extend in operating portion 3 bottom described push rod 11，It is provided with cavern part 5 bottom described push rod 11，Described switch movable contact 8 top is inserted in cavern part 5 and is slidably connected with push rod 11，Both sides, 2 times cavity medial walls of housing are symmetrically arranged with the first groove 9 and the second groove 10，First groove 9 is positioned at the second groove 10 top，Described first groove 9 is vertical with push rod 11 axis with the downside of the second groove 10，The angle of the second groove 10 upper side and push rod 11 axis is acute angle，Described telescopic pin 6 includes two support portions 61 and connects the elastic telescopic element 62 of two support portions 61，Downside, outer end, described support portion 61 is vertical with push rod 11 axis，Outer end, described support portion 61 upper side and push rod 11 angle are acute angle，Described push rod 11 bottom is provided with slideway，Described slideway is vertical with push rod 11 axis，Described telescopic pin 6 is arranged in slideway，Described operating portion 3 side is symmetrically arranged with through hole，The support portion 61 at described telescopic pin 6 two ends is stretched out from described through hole.
During work, when switch movable contact 8 moves up, switch movable contact 8 top upward sliding in cavern part 5 contacts the bottom of cavern part 5 until switch movable contact 8 upper surface, switch movable contact 8 continues to move up promotion push rod 11 and moves up until moving contact 4 contacts with static contact 1, elastic telescopic element 62 elongation simultaneously promotes the support portion 61 at two ends to stretch in the first groove 9, now downside, outer end, support portion 61 contacts with the first groove 9 downside, the upper surface of the through hole on described operating portion 3 side does not contact with outer end, described support portion 61 upper side, now electric current flows successively through switch movable contact 8, push rod 11, moving contact 4 and static contact 1 circuit ON.
nullWhen switch movable contact 8 moves down，First described operating portion 3 moves down under the drive of switch movable contact 8，Until the upper side of the through hole on described operating portion 3 side contacts with outer end, described support portion 61 upper side，Now switch movable contact 8 continues to move down，Upper side extruding outer end, support portion 61 upper side of described through hole，Under support portion 61 extrudes, elastic telescopic element 62 is shortened until outer end, support portion 61 departs from the first groove 9 downside by compression，Then the second groove 10 upper side is slipped in outer end, support portion 61，Now moving contact 4 separates with static contact 1，Circuit Interrupt simultaneously，Then switch movable contact 8 continues to move down，Outer end, support portion 61 moves down along the second groove 10 upper side，Elastic telescopic element 62 extends gradually simultaneously，When 2 times cavity floor of operating portion 3 bottom surface and housing contact，Downside, outer end, support portion 61 contacts with the downside of the second groove 10.
Claims (2)
- null1. a vacuum circuit breaker，It is characterized in that: include being internally provided with the housing (2) of cavity、Static contact (1)、Moving contact (4)、Switch movable contact (8)、Operating portion (3)、Telescopic pin (6) and push rod (11)，Described housing (2) is internally provided with dividing plate，Cavity is divided into upper plenum and lower cavity by described dividing plate，Described dividing plate is provided with pilot hole，Described push rod (11) upper end is inserted in pilot hole，Described static contact (1) is arranged on the top of upper plenum，Described moving contact (4) is arranged on the lower section of static contact (1)，Described moving contact (4) is fixed on push rod (11) top，Described switch movable contact (8) is arranged on the bottom of lower cavity，Described operating portion (3) is the uncovered cylinder in upper end，The base plate of operating portion (3) is fixed on the middle part of switch movable contact (8)，Described push rod (11) bottom extend in operating portion (3)，Described push rod (11) bottom is provided with cavern part (5)，Described switch movable contact (8) top is inserted in cavern part (5) and is slidably connected with push rod (11)，Both sides, cavity medial wall are symmetrically arranged with under housing (2) the first groove (9) and the second groove (10)，First groove (9) is positioned at the second groove (10) top，Described first groove (9) is vertical with push rod (11) axis with the downside of the second groove (10)，The angle of the second groove (10) upper side and push rod (11) axis is acute angle，Described telescopic pin (6) includes two support portions (61) and connects the elastic telescopic element (62) of two support portions (61)，Described support portion (61) downside, outer end is vertical with push rod (11) axis，Described support portion (61) outer end upper side and push rod (11) angle are acute angle，Described push rod (11) bottom is provided with slideway，Described slideway is vertical with push rod (11) axis，Described telescopic pin (6) is arranged in slideway，Described operating portion (3) side is symmetrically arranged with through hole，The support portion (61) at described telescopic pin (6) two ends is stretched out from described through hole，When moving contact (4) contacts with static contact (1)，The base contact of switch movable contact (8) upper surface and cavern part (5)，The support portion (61) at telescopic pin (6) two ends is stretched in the first groove (9)，Support portion (61) downside, outer end contacts with the first groove (9) downside，When moving contact (4) separates with static contact (1)，Switch movable contact (8) upper surface separates with the bottom of cavern part (5)，Operating portion (3) bottom surface contacts with cavity floor under housing (2)，Support portion (61) downside, outer end contacts with the downside of the second groove (10)，The upper surface of the through hole on operating portion (3) side contacts with described support portion (61) outer end upper side.
- 2. vacuum circuit breaker according to claim 1, it is characterised in that: described elastic telescopic element (62) is helical spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324612.5A CN105788954B (en) | 2016-05-17 | 2016-05-17 | A kind of vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610324612.5A CN105788954B (en) | 2016-05-17 | 2016-05-17 | A kind of vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105788954A true CN105788954A (en) | 2016-07-20 |
| CN105788954B CN105788954B (en) | 2018-01-09 |
Family
ID=56379892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610324612.5A Active CN105788954B (en) | 2016-05-17 | 2016-05-17 | A kind of vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788954B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593971A (en) * | 2021-08-02 | 2021-11-02 | 西安交通大学 | Integrated structure vacuum arc-extinguishing chamber and vacuum switch using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2461339A1 (en) * | 2010-12-03 | 2012-06-06 | ABB Technology AG | Circuit breaker pole |
| CN102543561A (en) * | 2012-01-04 | 2012-07-04 | 苏州朗格电气有限公司 | Closing holding device for vacuum circuit breaker |
| CN103198963A (en) * | 2012-04-17 | 2013-07-10 | 苏州朗格电气有限公司 | Vacuum circuit breaker |
| CN203503544U (en) * | 2013-10-31 | 2014-03-26 | 合肥天海电气技术有限公司 | Buffer-type vacuum explosion chamber |
| CN104810192A (en) * | 2015-05-08 | 2015-07-29 | 苏州奥然日用品有限公司 | Vacuum circuit breaker closing lock device |
-
2016
- 2016-05-17 CN CN201610324612.5A patent/CN105788954B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2461339A1 (en) * | 2010-12-03 | 2012-06-06 | ABB Technology AG | Circuit breaker pole |
| CN102543561A (en) * | 2012-01-04 | 2012-07-04 | 苏州朗格电气有限公司 | Closing holding device for vacuum circuit breaker |
| CN103198963A (en) * | 2012-04-17 | 2013-07-10 | 苏州朗格电气有限公司 | Vacuum circuit breaker |
| CN203503544U (en) * | 2013-10-31 | 2014-03-26 | 合肥天海电气技术有限公司 | Buffer-type vacuum explosion chamber |
| CN104810192A (en) * | 2015-05-08 | 2015-07-29 | 苏州奥然日用品有限公司 | Vacuum circuit breaker closing lock device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593971A (en) * | 2021-08-02 | 2021-11-02 | 西安交通大学 | Integrated structure vacuum arc-extinguishing chamber and vacuum switch using same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105788954B (en) | 2018-01-09 |
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