CN219457502U - Direct current quick breaker for cross-zone protection - Google Patents
Direct current quick breaker for cross-zone protection Download PDFInfo
- Publication number
- CN219457502U CN219457502U CN202223462787.2U CN202223462787U CN219457502U CN 219457502 U CN219457502 U CN 219457502U CN 202223462787 U CN202223462787 U CN 202223462787U CN 219457502 U CN219457502 U CN 219457502U
- Authority
- CN
- China
- Prior art keywords
- arc
- contact
- moving contact
- switch
- direct current
- 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.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The utility model relates to a direct current quick breaker for cross-region protection, which comprises a switch body, a connecting plate, a grid sheet, an arc-isolating plate, an arc-extinguishing cover shell and a main static contact, wherein a closing coil, a fork rod, a moving contact, a push rod, an auxiliary contact and a buffer are arranged in the switch body; one end of the fork rod is fixed on the closing coil, the other end of the fork rod is aligned with the moving contact, and one side of the moving contact is aligned with the main contact; the other side of the moving contact is aligned with the push rod, the push rod and the auxiliary contact are fixed together for linkage, and the buffer is positioned at one side of the moving contact and far away from the position of the main contact; the connecting plate is arranged between the switch body and the arc extinguishing chamber shell; the grid plate and the arc-shield plate are fixed in the mounting groove of the arc-extinguishing chamber shell. The utility model removes the body tripping module of the direct current quick switch, thereby solving the problem of misoperation of the switch caused by the tripping action of the body. Meanwhile, as the circuit breaker is provided with the arc extinguishing device, the circuit breaker can be operated with load, and the arrangement of interlocking wires in the switch cabinet is reduced, so that the fault points are reduced.
Description
Technical Field
The utility model relates to a circuit breaker, in particular to a circuit breaker which solves the problem of misoperation of a switch caused by tripping action of a body; the arrangement of the interlocking wires in the switchgear is reduced, so that the fault points are reduced, and the misoperation of the direct current quick breaker for the cross-zone protection can be reduced to a certain extent.
Background
Because the traction power supply is characterized by bilateral power supply, when a group of direct current feeder lines are out of operation due to faults, adjacent stations are required to carry out cross-region power supply. The existing handoff switch generally adopts an isolating switch, can not be electrified and is separated and combined with load, and has the defects of complicated operation steps and complex linkage.
The existing internet surfing switch cabinet cannot be electrified to switch on or off if an isolating switch scheme is adopted, and cannot solve misoperation caused by how large current is caused if a direct current quick breaker scheme is adopted because a bidirectional release is arranged. More interlocking cables are needed when the isolating switch is operated, and the isolating switch cabinet and the direct current traction feeder cabinet are not in a power substation room generally, so that the locking cables are connected with more fault points.
Disclosure of Invention
In view of the above problems, a main object of the present utility model is to provide a method for solving the problem of malfunction of a switch caused by a trip action of a body; the arrangement of the interlocking wires in the switchgear is reduced, so that the fault points are reduced, and the misoperation of the direct current quick breaker for the cross-zone protection can be reduced to a certain extent.
The utility model solves the technical problems by the following technical proposal: the utility model provides a direct current quick breaker for cross-zone protection, which comprises: the switch comprises a switch body, a connecting plate, a grid plate, an arc-isolating plate, an arc-extinguishing chamber shell and a main static contact, wherein a closing coil, a fork rod, a moving contact, a push rod, an auxiliary contact and a buffer are arranged in the switch body.
One end of the fork rod is fixed on the closing coil, the other end of the fork rod is aligned with the moving contact, and one side of the moving contact is aligned with the main contact.
The other side of the moving contact is aligned with the push rod, the push rod and the auxiliary contact are fixed together for linkage, and the buffer is positioned on one side of the moving contact and far away from the position of the main contact.
The coupling plate is mounted between the switch body and the arc chute housing.
The grid plate and the arc-shield plate are fixed in the mounting groove of the arc-extinguishing chamber shell.
In a specific embodiment of the utility model, the closing coils are connected to the fork rod by means of a connecting bolt.
In a specific embodiment of the utility model, the coupling plate is mounted between the switch body and the arc chute housing by means of mounting bolts.
In a specific embodiment of the utility model, the arc generated between the main contact and the moving contact moves upwards between the connecting plates into the arc extinguishing chamber and is separated by the grid plate; while the ionized gas is neutralized by the flash barrier.
The utility model has the positive progress effects that: the utility model provides a direct current quick breaker for cross-region protection, which solves the problems that the existing direct current quick switches are all provided with bidirectional body trips, when the current of the direct current quick switch with the body trip function is overlarge in a network switch cabinet, the body trip action exists to enable the switch to be opened, and the cross-region switch does not need the function. The principle of the utility model is to dismantle the body tripping module of the direct current quick switch, thereby solving the problem of misoperation of the switch caused by the tripping action of the body. Meanwhile, as the circuit breaker is provided with the arc extinguishing device, the circuit breaker can be operated with load, and the arrangement of interlocking wires in the switch cabinet is reduced, so that the fault points are reduced, and the misoperation is reduced to a certain extent.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
The following are names corresponding to the reference numerals in the present utility model:
the switching-on coil 1, the fork rod 2, the moving contact 3, the push rod 4, the auxiliary contact 5, the buffer 6, the connecting plate 7, the grid sheet 8, the arc-isolating plate 9, the arc-extinguishing cover shell 11 and the main static contact 12.
Detailed Description
The following description of the preferred embodiments of the present utility model is given with reference to the accompanying drawings, so as to explain the technical scheme of the present utility model in detail.
Fig. 1 is a schematic structural view of the present utility model, and as shown in fig. 1, the present utility model provides a dc fast breaker for protection against a handover, which includes: the switch comprises a switch body, a connecting plate 7, a grid sheet 8, an arc-isolating plate 9, an arc-extinguishing cover shell 11 and a main static contact 12.
The switch body is internally provided with a closing coil 1, a fork rod 2, a moving contact 3, a push rod 4, an auxiliary contact 5 and a buffer 6.
One end of the fork rod 2 is fixed on the closing coil 1, the other end of the fork rod is aligned with the moving contact 3, and one side of the moving contact 3 is aligned with the main contact 12; the other side of the moving contact 3 is aligned with the push rod 4, the push rod 4 and the auxiliary contact 5 are fixed together for linkage, and the buffer 6 is positioned at one side of the moving contact 3 and far away from the position of the main contact 12; the connecting plate 7 is arranged between the switch body and the arc extinguishing chamber shell 11; the grid 8 and the arc-shield 9 are both fixed in the mounting groove of the arc-extinguishing chamber housing 11.
The closing coil 1 is connected with the fork rod 2 through a connecting bolt, and is used for pushing the connecting body of the connecting bolt of the closing coil 1 and the fork rod 2 to drive the moving contact 3 to be closed when the closing coil 1 receives a closing pulse signal, and simultaneously, applying a certain pressure to enable the moving contact 3 to be in contact with the main contact 12 when the moving contact 3 is closed. The movable contact 3 pushes the push rod 4 to drive the auxiliary contact 5 to act. The shock generated upon closing is absorbed by the damper 6.
The arc generated between the main contact 12 and the moving contact 3 moves upwards between the coupling plates 7 into the arc-extinguishing chamber, separated by the grid 8. While the ionized gas is mostly neutralized by the arc shield 9.
The grid 8 and the arc-shield 9 are both fixed in the mounting groove of the arc-extinguishing chamber housing 11. The connecting plate 7 is mounted between the switch body and the arc-extinguishing chamber housing 11 by means of mounting bolts.
The switch opening and closing function operation process in the utility model is as follows:
closing: when the circuit breaker receives a closing pulse, the closing coil 1 pushes the fork rod 2 to move, the fork rod drives the moving contact 3 to be closed, and certain pressure is applied to the moving contact to enable the moving contact to be in contact with the main contact. The movable contact 3 pushes the push rod 4 to drive the auxiliary contact 5 to act. The shock generated upon closing is absorbed by the damper 6.
And (3) maintaining: after the main contact is closed, the contact pressure is maintained by the closing coil 1, by means of a small holding current (E-type circuit breaker) or without using current (M-type circuit breaker).
And (3) opening: the circuit breaker can be opened by a remote-controlled opening command: a switch-off command is issued remotely to the circuit breaker, which will open the holding current (E-type circuit breaker) or apply a reverse pulse (M-type circuit breaker), which will cause the fork lever 2 to retract. At this time, the push rod 4 will open the moving contact 3 and drive the auxiliary contact 5 to act. The arc generated between the main contact 12 and the moving contact 3 moves upwards between the coupling plates 7 into the arc-extinguishing chamber, separated by the grid 8. While the ionized gas is mostly neutralized by the arc shield 9.
The utility model solves the problem that the existing direct current quick switch is provided with the bidirectional body tripping device, when the current is overlarge, the direct current quick switch with the body tripping function has the body tripping action, so that the switch is opened, and the function is not needed for the cross-region switch. The principle of the utility model is to dismantle the body tripping module of the direct current quick switch, thereby solving the problem of misoperation of the switch caused by the tripping action of the body. Meanwhile, as the circuit breaker is provided with the arc extinguishing device, the circuit breaker can be operated with load, and the arrangement of interlocking wires in the switch cabinet is reduced, so that the fault points are reduced, and the misoperation is reduced to a certain extent.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and that various changes and modifications may be effected therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.
Claims (4)
1. A dc fast breaker for use in cross-zone protection, characterized by: the direct current quick breaker for the cross-zone protection comprises: the switch comprises a switch body, a connecting plate, a grid plate, an arc-isolating plate, an arc-extinguishing cover shell and a main static contact, wherein a closing coil, a fork rod, a moving contact, a push rod, an auxiliary contact and a buffer are arranged in the switch body;
one end of the fork rod is fixed on the closing coil, the other end of the fork rod is aligned with the moving contact, and one side of the moving contact is aligned with the main contact;
the other side of the moving contact is aligned with the push rod, the push rod and the auxiliary contact are fixed together for linkage, and the buffer is positioned at one side of the moving contact and far away from the position of the main contact;
the connecting plate is arranged between the switch body and the arc extinguishing chamber shell;
the grid plate and the arc-shield plate are fixed in the mounting groove of the arc-extinguishing chamber shell.
2. A direct current fast circuit breaker for cross-over protection according to claim 1, characterized in that: the closing coil is connected with the fork rod through a connecting bolt.
3. A direct current fast circuit breaker for cross-over protection according to claim 1, characterized in that: the connecting plate is arranged between the switch body and the arc extinguishing chamber shell and is fixed through a mounting bolt.
4. A direct current fast circuit breaker for cross-over protection according to claim 1, characterized in that: the electric arc generated between the main contact and the moving contact moves upwards to the arc extinguishing chamber between the connecting plates and is separated by the grid plate; while the ionized gas is neutralized by the flash barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223462787.2U CN219457502U (en) | 2022-12-24 | 2022-12-24 | Direct current quick breaker for cross-zone protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223462787.2U CN219457502U (en) | 2022-12-24 | 2022-12-24 | Direct current quick breaker for cross-zone protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219457502U true CN219457502U (en) | 2023-08-01 |
Family
ID=87421166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223462787.2U Active CN219457502U (en) | 2022-12-24 | 2022-12-24 | Direct current quick breaker for cross-zone protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219457502U (en) |
-
2022
- 2022-12-24 CN CN202223462787.2U patent/CN219457502U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102531873B1 (en) | Multiple hammer-struck vacuum interrupter weld failures | |
| CN109616375B (en) | Rapid arc extinguisher, medium-low voltage metal switch cabinet and application method of rapid arc extinguisher | |
| CN203192640U (en) | Interlocking device of high-voltage stationary cabinet | |
| CN2914304Y (en) | Permanent magnetism intelligent mechanism low-voltage vacuum breaker | |
| CN201274253Y (en) | Indoor combined electric appliance for 40.5 kV vacuum load switch fuse | |
| US11417481B2 (en) | Switch assembly | |
| CN219457502U (en) | Direct current quick breaker for cross-zone protection | |
| CN201741623U (en) | Outdoor high-voltage intelligent permanent magnetic vacuum switch | |
| CN201112263Y (en) | High voltage vacuum breaker | |
| CN203931930U (en) | Outdoor high-voltage vacuum breaker splitting or integrating lock integrated mechanism | |
| CN201616380U (en) | Split sealed contactor-fuse combined apparatus | |
| CN115547736A (en) | One-time and two-time integrated on-column circuit breaker | |
| CN201478729U (en) | Indoor box-type metal enclosed ring main unit | |
| CN107578937A (en) | A kind of high-voltage combined electrical apparatus disconnecting switch and breaker interlocking mechanism | |
| CN2548249Y (en) | Indoor high-voltage vacuum circuit breaker | |
| CN202333565U (en) | Chassis vehicle device with door-closing operation | |
| CN103456573A (en) | Breaker and power distribution protection and control method thereof | |
| CN105161351A (en) | Vacuum circuit breaker | |
| CN104051184B (en) | Outdoor high-voltage vacuum breaker splitting or integrating lock integrated mechanism | |
| CN203931929U (en) | The interlock of outdoor high-voltage vacuum breaker splitting or integrating lock integrated mechanism | |
| CN107464722B (en) | Permanent magnet operating mechanism of load switch-fuse combined electrical apparatus and control method thereof | |
| CN201886957U (en) | Indoor high-voltage alternating current (AC) vacuum circuit breaker | |
| CN202749265U (en) | Breaker-disconnector electrical interlocking device | |
| CN201708446U (en) | Vacuum disconnector combined electrical apparatus | |
| CN117133590A (en) | Hybrid circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |