CN113096988A - Automatic change-over switch capable of rapidly switching off arc extinction - Google Patents
Automatic change-over switch capable of rapidly switching off arc extinction Download PDFInfo
- Publication number
- CN113096988A CN113096988A CN202110337627.6A CN202110337627A CN113096988A CN 113096988 A CN113096988 A CN 113096988A CN 202110337627 A CN202110337627 A CN 202110337627A CN 113096988 A CN113096988 A CN 113096988A
- Authority
- CN
- China
- Prior art keywords
- arc
- contact
- plate
- moving contact
- arc cutting
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/32—Insulating body insertable between contacts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention discloses an automatic change-over switch capable of rapidly switching off arc, which comprises a change-over switch shell, a static contact, a moving contact and a moving contact driving mechanism, wherein the moving contact can rotate between a closed position contacted with the static contact and an open position separated from the static contact; the arc cutting device is characterized by further comprising an arc cutting piece, the arc cutting piece comprises a driving plate and an arc cutting plate connected with the driving plate, the head of the moving contact is located between the driving plate and the arc cutting plate, when the moving contact rotates to an open position from the closed position, the head of the moving contact can act on the driving plate, the driving plate drives the arc cutting plate to rotate and extend into a position between the moving contact and the static contact, and when the moving contact rotates to the closed position from the open position, the head of the moving contact can act on the arc cutting plate, so that the arc cutting plate rotates and moves out from the position between the moving. The automatic transfer switch capable of rapidly switching off the arc can cut off the arc generated by separating the moving contact and the static contact, so that the arc is accelerated to be extinguished, and the moving contact and the static contact are protected.
Description
Technical Field
The invention relates to an automatic change-over switch capable of rapidly switching off and extinguishing arc.
Background
In low voltage distribution systems, automatic transfer switching devices have become an indispensable important component. When the power supply fails, one or more load circuits can be automatically switched from a failure power supply to a standby power supply, so that the important load is ensured not to be powered off when working. At present, an arc extinguishing shield is required to be arranged between a moving contact and a static contact of a change-over switch, electric arcs generated when the moving contact is disconnected enter the arc extinguishing shield through the guidance of an arc striking plate, when the electric arcs enter the arc extinguishing shield through the guidance of the arc striking plate, a part of electric arcs between the moving contact and the static contact are burnt, at the moment, the moving contact and the static contact are pulled apart by a certain distance, but the electric arcs are burnt, so that the moving contact and the static contact are in a conducting state, a power supply is not actually cut off, the breaking capacity of the automatic change-over switch is influenced, and the damage force to the moving contact and the static.
Disclosure of Invention
The invention aims to provide an automatic change-over switch capable of rapidly switching off arc, which is reasonable in structure and can cut off electric arc generated by separation of a moving contact and a static contact, so that the electric arc is accelerated to be extinguished, and the moving contact and the static contact are protected.
In order to achieve the purpose, the technical scheme of the invention is to design an automatic change-over switch capable of rapidly switching off and extinguishing arc, which comprises a change-over switch shell, a common power supply contact assembly and a standby power supply contact assembly, wherein the common power supply contact assembly and the standby power supply contact assembly are arranged in the change-over switch shell;
the common power supply contact assembly and the standby power supply contact assembly are identical in structure, and comprise a fixed contact, a movable contact and a movable contact driving mechanism, wherein the fixed contact is fixedly arranged, the movable contact driving mechanism comprises a rotating arm and a connecting rod, the rotating arm is hinged with the movable contact through the connecting rod, and the movable contact can rotate between a closing position in contact with the fixed contact and a disconnecting position separated from the fixed contact;
the automatic change-over switch capable of rapidly cutting and extinguishing the arc further comprises an arc cutting part, the arc cutting part is rotatably installed inside the change-over switch shell through a shaft pin, the arc cutting part is roughly of a V-shaped structure, the arc cutting part comprises a driving plate and an arc cutting plate integrally connected with the driving plate, the head of the moving contact is located between the driving plate and the arc cutting plate, when the moving contact rotates from a closed position to an open position, the head of the moving contact can act on the driving plate, the driving plate drives the arc cutting plate to rotate and extend into a position between the moving contact and a fixed contact, and when the moving contact rotates from the open position to the closed position, the head of the moving contact can act on the arc cutting plate, so that the arc cutting plate rotates and moves out from the position between the moving contact.
Preferably, the driving plate is a flat plate, and the arc cutting plate is an arc plate.
Preferably, one end of the arc cutting plate, which is far away from the driving plate, is provided with a cutting edge.
Preferably, the shaft pin is arranged at the joint of the driving plate and the arc cutting plate.
Preferably, the movable contact is sleeved with an arc blocking piece which is an arc-shaped plate.
Preferably, a convex block is arranged on the inner wall of the conversion switch shell, the convex block is positioned below the arc blocking piece, and an arc slot for inserting the bottom end of the arc blocking piece is formed in the convex block.
Preferably, the arc cutting part and the arc blocking part are both insulating parts.
The invention has the advantages and beneficial effects that: the automatic change-over switch capable of rapidly switching off the arc is reasonable in structure and capable of switching off the arc generated by separation of the moving contact and the static contact, so that arc extinguishing is accelerated, and the moving contact and the static contact are protected.
When the moving contact rotates to the disconnection position from the closing position, the moving contact is separated from the static contact, in the process, the head of the moving contact acts on the driving plate of the arc cutting part, the driving plate drives the arc cutting plate to rotate along the clockwise direction until the arc cutting plate stretches into the space between the moving contact and the static contact, and therefore the electric arc generated by separation of the moving contact and the static contact is cut off, the electric arc is rapidly extinguished, the breaking reliability is improved, the moving contact and the static contact can be prevented from being burnt out, and the moving contact and the static contact are effectively protected.
When the moving contact rotates from the open position to the closed position, the moving contact is in contact with the fixed contact, and in the process, the head of the moving contact acts on the arc cutting plate of the arc cutting piece, so that the arc cutting plate rotates in the counterclockwise direction and moves out from between the moving contact and the fixed contact, and the moving contact and the fixed contact are prevented from being closed.
And, through setting up fender arc spare, can avoid the electric arc at will the cross flow, prevent to cause the damage to the part in the change-over switch casing.
Drawings
FIG. 1 is a schematic of the present invention.
Fig. 2 is a schematic diagram of the movable contact driving mechanism in the invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The technical scheme of the specific implementation of the invention is as follows:
as shown in fig. 1 and 2, an automatic transfer switch capable of rapidly switching arc includes a transfer switch housing 1, and a common power contact assembly and a standby power contact assembly disposed inside the transfer switch housing 1;
the structure of the common power supply contact assembly is the same as that of the standby power supply contact assembly, the common power supply contact assembly and the standby power supply contact assembly respectively comprise a static contact 2, a movable contact 3 and a movable contact driving mechanism, the static contact 2 is fixedly arranged, the movable contact driving mechanism comprises a rotating arm 4 and a connecting rod 5, the rotating arm 4 is hinged with the movable contact 3 through the connecting rod 5, and the movable contact 3 can rotate between a closed position contacted with the static contact 2 and a disconnected position separated from the static contact 2;
the automatic change-over switch capable of rapidly cutting and extinguishing arc further comprises an arc cutting part, the arc cutting part is rotatably installed inside the change-over switch shell 1 through a shaft pin 6, the arc cutting part is approximately in a V-shaped structure and comprises a driving plate 7 and an arc cutting plate 8 integrally connected with the driving plate 7, the head of the moving contact 3 is located between the driving plate 7 and the arc cutting plate 8, when the moving contact 3 rotates from a closed position to an open position, the head of the moving contact 3 can act on the driving plate 7, so that the driving plate 7 drives the arc cutting plate 8 to rotate and extend into a position between the moving contact 3 and the static contact 2, and when the moving contact 3 rotates from the open position to the closed position, the head of the moving contact 3 can act on the arc cutting plate 8, so that the arc cutting plate 8 rotates and moves out from the position between the moving contact 3 and the static contact.
The driving plate 7 is a flat plate, and the arc cutting plate 8 is an arc plate.
And a cutting edge is arranged at one end of the arc cutting plate 8 far away from the drive plate 7.
The shaft pin 6 is arranged at the joint of the driving plate 7 and the arc cutting plate 8.
The moving contact 3 is sleeved with an arc blocking part 9, and the arc blocking part 9 is an arc-shaped plate.
The inner wall of the conversion switch shell 1 is provided with a projection 10, the projection 10 is located below the arc blocking piece 9, and the projection 10 is provided with an arc slot 11 for inserting the bottom end of the arc blocking piece 9.
The arc cutting part and the arc blocking part 9 are insulating parts.
The invention has the advantages and beneficial effects that: the automatic change-over switch capable of rapidly switching off the arc is reasonable in structure and capable of switching off the arc generated by separation of the moving contact 3 and the static contact 2, so that arc extinguishing is accelerated, and the moving contact 3 and the static contact 2 are protected.
When the movable contact 3 rotates from the closed position to the open position, the movable contact 3 is separated from the static contact 2, in the process, the head of the movable contact 3 acts on the drive plate 7 of the arc cutting part, the drive plate 7 drives the arc cutting plate 8 to rotate clockwise until the arc cutting plate 8 extends into the space between the movable contact 3 and the static contact 2, so that electric arcs generated by separation of the movable contact 3 and the static contact 2 are cut off, the electric arcs are rapidly extinguished, the breaking reliability is improved, the movable contact 3 and the static contact 2 can be prevented from being burnt, and the movable contact 3 and the static contact 2 are effectively protected.
When the moving contact 3 rotates from the open position to the closed position, the moving contact 3 is in contact with the static contact 2, and in the process, the head of the moving contact 3 acts on the arc cutting plate 8 of the arc cutting member, so that the arc cutting plate 8 rotates anticlockwise and moves out from between the moving contact 3 and the static contact 2, and the moving contact 3 and the static contact 2 are prevented from being closed.
And, through setting up fender arc piece 9, can avoid the electric arc to scurry at will, prevent to cause the damage to the part in change over switch casing 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An automatic change-over switch capable of rapidly switching off arc is characterized by comprising a change-over switch shell, a common power supply contact assembly and a standby power supply contact assembly, wherein the common power supply contact assembly and the standby power supply contact assembly are arranged in the change-over switch shell;
the common power supply contact assembly and the standby power supply contact assembly are identical in structure, and comprise a fixed contact, a movable contact and a movable contact driving mechanism, wherein the fixed contact is fixedly arranged, the movable contact driving mechanism comprises a rotating arm and a connecting rod, the rotating arm is hinged with the movable contact through the connecting rod, and the movable contact can rotate between a closing position in contact with the fixed contact and a disconnecting position separated from the fixed contact;
the automatic change-over switch capable of rapidly cutting and extinguishing the arc further comprises an arc cutting part, the arc cutting part is rotatably installed inside the change-over switch shell through a shaft pin, the arc cutting part is roughly of a V-shaped structure, the arc cutting part comprises a driving plate and an arc cutting plate integrally connected with the driving plate, the head of the moving contact is located between the driving plate and the arc cutting plate, when the moving contact rotates from a closed position to an open position, the head of the moving contact can act on the driving plate, the driving plate drives the arc cutting plate to rotate and extend into a position between the moving contact and a fixed contact, and when the moving contact rotates from the open position to the closed position, the head of the moving contact can act on the arc cutting plate, so that the arc cutting plate rotates and moves out from the position between the moving contact.
2. The automatic transfer switch capable of switching arc rapidly of claim 1, wherein the driving plate is a flat plate and the arc-cutting plate is an arc-shaped plate.
3. The automatic transfer switch capable of switching arc rapidly of claim 2, wherein the end of the arc cutting plate away from the driving plate is provided with a cutting edge.
4. The automatic transfer switch capable of switching arc rapidly of claim 3, wherein the shaft pin is provided at a junction of the driving plate and the arc-cutting plate.
5. The automatic transfer switch capable of rapidly switching off and extinguishing arc according to claim 4, wherein the moving contact is sleeved with an arc blocking member, and the arc blocking member is an arc-shaped plate.
6. The automatic transfer switch capable of rapidly switching off and extinguishing arc according to claim 5, wherein a protrusion is provided on an inner wall of the transfer switch housing, the protrusion is located below the arc blocking member, and an arc slot for inserting a bottom end of the arc blocking member is provided on the protrusion.
7. The automatic transfer switch capable of switching arc rapidly of claim 6, wherein the arc switching member and the arc blocking member are both insulating members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110337627.6A CN113096988A (en) | 2021-03-30 | 2021-03-30 | Automatic change-over switch capable of rapidly switching off arc extinction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110337627.6A CN113096988A (en) | 2021-03-30 | 2021-03-30 | Automatic change-over switch capable of rapidly switching off arc extinction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113096988A true CN113096988A (en) | 2021-07-09 |
Family
ID=76671235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110337627.6A Pending CN113096988A (en) | 2021-03-30 | 2021-03-30 | Automatic change-over switch capable of rapidly switching off arc extinction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113096988A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201084657Y (en) * | 2007-08-04 | 2008-07-09 | 漳州马可电器科技有限公司 | A breaker with the arc-breaking/-quenching device |
| CN206059220U (en) * | 2016-08-12 | 2017-03-29 | 北京明日电器设备有限责任公司 | A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch |
| CN111725014A (en) * | 2020-07-22 | 2020-09-29 | 乐清东海电器有限公司 | Arc control device of dual-power switch |
-
2021
- 2021-03-30 CN CN202110337627.6A patent/CN113096988A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201084657Y (en) * | 2007-08-04 | 2008-07-09 | 漳州马可电器科技有限公司 | A breaker with the arc-breaking/-quenching device |
| CN206059220U (en) * | 2016-08-12 | 2017-03-29 | 北京明日电器设备有限责任公司 | A kind of contact arc-extinguishing mechanism of PC levels double power supply automatic transfer switch |
| CN111725014A (en) * | 2020-07-22 | 2020-09-29 | 乐清东海电器有限公司 | Arc control device of dual-power switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20070032213A (en) | Electrical power transfering apparatus | |
| CN113096988A (en) | Automatic change-over switch capable of rapidly switching off arc extinction | |
| CN214900324U (en) | Dual-power automatic transfer switch | |
| CN219226094U (en) | Circuit breaker | |
| CN101630612B (en) | Main contact device of selective protective breaker | |
| CN207587673U (en) | Moving contact component and device for switching may be reversed | |
| CN113345742A (en) | Arc extinguishing system of automatic change-over switch | |
| EP2786386B1 (en) | Charging assembly with over rotation control and electrical switching apparatus employing same | |
| CN209266341U (en) | A kind of dynamic contact mechanism of dual-interruption point breaker | |
| CN216435812U (en) | Circuit breaker | |
| KR100890755B1 (en) | Shaft assembly for mold cased circuit breaker and single pole switching unit with the shaft assembly | |
| CN201242983Y (en) | Main contact device for selective protection circuit breaker | |
| CN220933994U (en) | Contact device with arc contact | |
| CN114678239B (en) | Moving side contact assembly of direct current breaker and direct current breaker | |
| CN107808806B (en) | Turnable movable contact component and switching device | |
| CN212750772U (en) | Operating mechanism of circuit breaker and circuit breaker | |
| KR200392656Y1 (en) | A Trip Driving Mechanism for a Circuit Braker | |
| CN219759495U (en) | Anti-collision intelligent spring-operated circuit breaker | |
| CN213184181U (en) | Static contact of leakage circuit breaker | |
| CN213242453U (en) | Moving contact system of low-voltage circuit breaker | |
| CN220774215U (en) | Isolating switch with remote brake separating mechanism | |
| CN220797516U (en) | Transmission mechanism of inflatable cabinet | |
| CN217485323U (en) | Arc striking device and circuit breaker | |
| CN219123141U (en) | Double-layer visual isolating switch | |
| CN216389231U (en) | Circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210709 |
|
| RJ01 | Rejection of invention patent application after publication |