CN110120322B - Totally enclosed low-voltage circuit breaker - Google Patents
Totally enclosed low-voltage circuit breaker Download PDFInfo
- Publication number
- CN110120322B CN110120322B CN201810118442.4A CN201810118442A CN110120322B CN 110120322 B CN110120322 B CN 110120322B CN 201810118442 A CN201810118442 A CN 201810118442A CN 110120322 B CN110120322 B CN 110120322B
- Authority
- CN
- China
- Prior art keywords
- rod
- cylinder body
- circuit breaker
- voltage circuit
- vacuum arc
- 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
Images
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
- H01H33/666—Operating arrangements
Abstract
The invention discloses a totally enclosed low-voltage circuit breaker, which comprises an insulating shell, wherein a push rod, a reset device, a driving device and a vacuum arc extinguisher are arranged in the insulating shell, the driving device is used for driving the push rod to move up and down, the driving device comprises a cylinder body which is integrally formed with the insulating shell, a permanent magnet arranged in the cylinder body and a coil which is arranged on the outer wall of the cylinder body and used for driving the permanent magnet to move, the driving device is connected with the push rod through a transmission mechanism, the transmission mechanism comprises a cross rod, a limiting rod and a supporting rod, a stop block with an inclined plane is arranged on the cross rod, a connecting rod is arranged on the supporting rod, a sliding rod is arranged on the limiting rod, a pulley is arranged at one end of the sliding rod, the pulley is arranged on the inclined. The invention has the beneficial effects that: the potential safety hazard generated by the operation of the low-voltage circuit breaker in an inflammable and explosive environment is avoided by the double isolation mode of the vacuum arc extinguisher and the insulating shell.
Description
Technical Field
The application belongs to the technical field of electrical equipment, and specifically relates to a totally enclosed low voltage circuit breaker.
Background
With the development of science and technology, electric power is widely applied to production and life, a low-voltage circuit breaker is used as a low-voltage electrical appliance and plays roles of overload, short circuit and under-voltage protection in a distribution line, at present, a universal air type circuit breaker is generally used as control and protection equipment in the line in the low-voltage distribution line, and the circuit breaker is exposed at a contact part, so that electric sparks generated by a contact are protected in the air in the opening and closing process, and once the electric sparks contact with inflammable and explosive gas or dust in the air, explosion danger can occur.
Disclosure of Invention
In view of the above, the present application provides a fully enclosed low voltage circuit breaker, which effectively cuts off the connection between the internal breaking mechanism and the outside.
In order to solve the technical problem, the application discloses a totally enclosed low-voltage circuit breaker, which comprises an insulating shell, wherein a push rod, a reset device and a vacuum arc extinguisher are arranged in the insulating shell, a driving device used for driving the push rod to move up and down is also arranged in the insulating shell, the driving device comprises a cylinder body, a permanent magnet and a coil, the permanent magnet is arranged in the cylinder body, the outer wall of the cylinder body is provided with the coil used for driving the permanent magnet to move, the cylinder body and the insulating shell are integrally formed, the driving device is connected with the push rod through a transmission mechanism, the transmission mechanism comprises a transverse rod, a limiting rod and a support rod, one end of the transverse rod is connected with the permanent magnet, the other end of the transverse rod is provided with a stop block, the stop block is provided with an inclined plane, the limiting rod and the support rod are both arranged on, the vacuum arc extinguisher is characterized in that a pulley is arranged at one end of the sliding rod, the pulley is arranged on an inclined plane of the stop block, the other end of the sliding rod is connected with one end of a connecting rod, the other end of the connecting rod is rotatably connected with the push rod, an upper bus and a lower bus are arranged on the insulating shell, the upper bus is electrically connected with a moving contact of the vacuum arc extinguisher, and the lower bus is electrically connected with a static contact of the vacuum arc extinguisher.
More preferably: the transverse rod is further provided with an L-shaped baffle and a vertical baffle, the stop block is arranged between the L-shaped baffle and the vertical baffle, and the L-shaped baffle and the vertical baffle are integrally formed with the transverse rod.
More preferably: still be equipped with the uide bushing in the cylinder body, the uide bushing splices with the inner wall of cylinder body, still be equipped with the dust cover outside the cylinder body, the dust cover with the insulating casing lock joint.
More preferably: the reset device comprises a press rod, a reset spring and a fixed rod, the fixed rod is arranged on the inner wall of the insulating shell, the press rod is composed of an intermediate shaft, an upper pressure plate and a lower pressure plate, the intermediate shaft penetrates through the fixed rod, the reset spring is arranged between the fixed rod and the upper pressure plate, and the lower pressure plate is connected with a moving contact of the vacuum arc extinguisher.
More preferably: the upper bus is connected with a moving contact of the vacuum arc extinguisher through a flexible connection, and the upper bus and the flexible connection are fixed on the insulating shell through bolts.
More preferably: one end of the push rod is connected with the upper pressure plate, the other end of the push rod is provided with a guide post, a groove matched with the guide post is formed in the insulating shell, and the guide post is arranged in the groove.
Compared with the prior art, the application can obtain the following technical effects:
1) the original unhooking protection mechanism is also isolated from the external connection under the condition of adopting the vacuum arc extinguisher, so that the overall sealing performance of the circuit breaker is improved;
2) through electromagnetic drive's mode, not only promoted and controlled the effect, accomplished inside mechanism and external complete isolation moreover, further promote the leakproofness.
Of course, it is not necessary for any product to achieve all of the above-described technical effects simultaneously.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic diagram of the general structure of an embodiment of the totally enclosed low voltage circuit breaker of the present application;
fig. 2 is a schematic view of a driving apparatus of an embodiment of the totally enclosed low voltage circuit breaker of the present application;
fig. 3 is a schematic diagram of a circuit interrupting mechanism for an embodiment of the fully enclosed low voltage circuit breaker of the present application;
fig. 4 is a schematic diagram of a push rod structure of the totally enclosed low-voltage circuit breaker of the present application.
The notation in the figure is: 1. the device comprises an insulating shell, 2, a push rod, 3, a reset device, 4, a vacuum arc extinguisher, 5, an upper bus, 6, a lower bus, 7, a cylinder body, 8, a permanent magnet, 9, a coil, 10, a cross rod, 11, a stop block, 12, a pulley, 13, a limiting rod, 14, a sliding rod, 15, a supporting rod, 16, a connecting rod, 17, an L-shaped baffle, 18, a vertical baffle, 19, a guide sleeve, 20, a dust cover, 21, a guide column, 22 and a groove.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
As shown in fig. 1 and 2, the totally enclosed low voltage circuit breaker according to the embodiment of the present application includes an insulating casing 1, a push rod 2, a reset device 3 and a vacuum arc extinguisher 4 are disposed in the insulating casing 1, the reset device 3 includes a press rod 31, a reset spring 32 and a fixed rod 33, the fixed rod 33 is disposed on an inner wall of the insulating casing 1, the press rod 31 is composed of an intermediate shaft, an upper pressure plate and a lower pressure plate, the intermediate shaft penetrates through the fixed rod 33, the reset spring 32 is disposed between the fixed rod 33 and the upper pressure plate, and the lower pressure plate is connected to a moving contact of the vacuum arc extinguisher 4; a driving device for driving the push rod 2 to move up and down is further arranged in the insulating shell 1, the driving device comprises a cylinder body 7, a permanent magnet 8 and a coil 9, the permanent magnet 8 is arranged in the cylinder body 7, the coil 9 is arranged on the outer wall of the cylinder body 7, when the coil 9 is electrified, a certain magnetic field is generated, so that the permanent magnet 8 is pushed to move, and in order to achieve the effect of complete sealing, the cylinder body 7 and the insulating shell 1 are integrally formed; the driving device is connected with the push rod 2 through a transmission mechanism, the specific transmission mechanism comprises a cross rod 10, a limiting rod 13 and a support rod 15, one end of the cross rod 10 is connected with the permanent magnet 8, the connection mode can be direct glue joint, or a groove can be arranged on the permanent magnet 8, then gluing to improve the connection strength, arranging a stop block 11 at the other end, arranging an inclined plane on the stop block 11, arranging a limit rod 13 and a support rod 15 on the insulating shell 1, arranging a connecting rod 16 on the support rod 15 and rotatably connecting the connecting rod 16, arranging a slide rod 14 on the limit rod 13, arranging a pulley 12 at one end of the slide rod 14, arranging the pulley 12 on the inclined plane of the stop block 11, wherein the stop block 11 can be made of rubber in order to enhance the friction factor of the inclined plane of the stop block 11, or the inclined plane of the stop block 11 is polished, the other end of the slide rod 14 is connected with one end of a connecting rod 16, and the other end of the connecting rod 16 is rotatably connected with the push rod 2; an upper bus 5 and a lower bus 6 are arranged on the insulating shell 1, the upper bus 5 is electrically connected with a moving contact of the vacuum arc extinguisher 4, the lower bus 6 is fixed on the insulating shell through a bolt and is electrically connected with a static contact of the vacuum arc extinguisher 4, and in order to improve the sealing property, sealant is also arranged on the contact surfaces of the upper bus 5, the lower bus 6 and the insulating shell 1.
In the sliding process of the pulley 12, the movement range of the pulley needs to be limited to a certain extent, so that the cross rod 10 is also provided with an L-shaped baffle 17 and a vertical baffle 18, the stop block 11 is arranged between the L-shaped baffle 17 and the vertical baffle 18, and both the L-shaped baffle 17 and the vertical baffle 18 are integrally formed with the cross rod 10; still be equipped with uide bushing 19 in the cylinder body 7, the uide bushing 19 splices with the inner wall of cylinder body 7, and the main effect of uide bushing is that prevent that permanent magnet 8 from deviating from cylinder body 7, also plays certain guide effect to horizontal pole 10 simultaneously, still is equipped with dust cover 20 outside cylinder body 7, and dust cover 20 and insulating casing 1 lock joint, two wires of taking out of coil 9 pass dust cover 20 and connect external control ware.
In this embodiment, the upper bus 5 is connected with the moving contact of the vacuum arc extinguisher 4 through a flexible connection 51, and both the upper bus 5 and the flexible connection 51 are fixed on the insulating shell 1 through bolts; one end of the push rod 2 is connected with the upper pressure plate, the other end of the push rod is provided with a guide post 21, a groove 22 matched with the guide post 21 is arranged on the insulating shell 1, and the guide post 21 is arranged in the groove 22.
The working mode of the embodiment is as follows: when a circuit is switched on, the coil 9 is electrified to generate a magnetic field opposite to the magnetic pole of the permanent magnet 8, the cross rod 10 is pushed to move, the pulley 12 rolls upwards in an inclined mode under the action of the inclined plane of the stop block 11, the sliding rod 14 is pushed to move upwards vertically, the sliding rod 14 pushes the push rod 2 to move downwards through the connecting rod 16 by utilizing the lever principle, the spring in the reset device 3 is compressed, the moving contact of the vacuum arc extinguisher 4 is pushed to move downwards at the same time, the switching-on operation is completed, when the circuit is switched off, the coil 9 is powered off, the magnetic field fails, and under the action of the reset spring 32, the moving contact of the vacuum arc extinguisher 4 moves upwards.
The invention has the beneficial effects that: the potential safety hazard generated by the operation of the low-voltage circuit breaker in an inflammable and explosive environment is avoided by the double isolation mode of the vacuum arc extinguisher and the insulating shell.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a totally enclosed low voltage circuit breaker, includes insulating casing (1), be equipped with push rod (2), resetting means (3) and vacuum arc extinguisher (4) in insulating casing (1), its characterized in that: still be equipped with the drive arrangement who is used for driving push rod (2) to reciprocate in insulating casing (1), drive arrangement includes cylinder body (7), permanent magnet (8) and coil (9), the inside of cylinder body (7) is located to permanent magnet (8), the outer wall of cylinder body (7) is equipped with coil (9) that are used for driving permanent magnet (8) to remove, cylinder body (7) and insulating casing (1) integrated into one piece, drive arrangement is connected with push rod (2) through a drive mechanism, drive mechanism includes horizontal pole (10), gag lever post (13) and bracing piece (15), the one end and the permanent magnet (8) of horizontal pole (10) are connected, and the other end is equipped with dog (11), be equipped with the inclined plane on dog (11), gag lever post (13) and bracing piece (15) all locate on insulating casing (1), be equipped with connecting rod (16) on bracing piece (15) and with connecting rod (16) rotatable coupling, the novel vacuum arc extinguisher is characterized in that a sliding rod (14) is arranged on the limiting rod (13), a pulley (12) is arranged at one end of the sliding rod (14), the pulley (12) is arranged on an inclined plane of the stop block (11), the other end of the sliding rod (14) is connected with one end of a connecting rod (16), the other end of the connecting rod (16) is rotatably connected with the push rod (2), an upper bus (5) and a lower bus (6) are arranged on the insulating shell (1), the upper bus (5) is electrically connected with a moving contact of the vacuum arc extinguisher (4), and the lower bus (6) is electrically connected with a static contact of the vacuum arc extinguisher (4).
2. Totally enclosed low voltage circuit breaker according to claim 1, characterized in that: the novel horizontal pole is characterized in that an L-shaped baffle (17) and a vertical baffle (18) are further arranged on the horizontal pole (10), the stop block (11) is arranged between the L-shaped baffle (17) and the vertical baffle (18), and the L-shaped baffle (17) and the vertical baffle (18) are integrally formed with the horizontal pole (10).
3. Totally enclosed low voltage circuit breaker according to claim 2, characterized in that: still be equipped with uide bushing (19) in cylinder body (7), the inner wall of uide bushing (19) and cylinder body (7) splices, still be equipped with dust cover (20) outward in cylinder body (7), dust cover (20) with insulating casing (1) lock joint.
4. Totally enclosed low voltage circuit breaker according to claim 3, characterized in that: resetting means (3) include depression bar (31), reset spring (32) and dead lever (33), dead lever (33) are located on the inner wall of insulating casing (1), depression bar (31) comprise jackshaft, last pressure disk and lower pressure disk, the jackshaft runs through dead lever (33), reset spring (32) are located between dead lever (33) and the last pressure disk, the pressure disk is connected with the moving contact of vacuum arc extinguisher (4) down.
5. Totally enclosed low voltage circuit breaker according to claim 4, characterized in that: the upper bus (5) is connected with a moving contact of the vacuum arc extinguisher (4) through a flexible connection (51), and the upper bus (5) and the flexible connection (51) are fixed on the insulating shell (1) through bolts.
6. Totally enclosed low voltage circuit breaker according to claim 5, characterized in that: one end of the push rod (2) is connected with the upper pressure plate, the other end of the push rod is provided with a guide post (21), a groove (22) matched with the guide post (21) is formed in the insulating shell (1), and the guide post (21) is arranged in the groove (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118442.4A CN110120322B (en) | 2018-02-06 | 2018-02-06 | Totally enclosed low-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118442.4A CN110120322B (en) | 2018-02-06 | 2018-02-06 | Totally enclosed low-voltage circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110120322A CN110120322A (en) | 2019-08-13 |
| CN110120322B true CN110120322B (en) | 2021-03-09 |
Family
ID=67519390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810118442.4A Active CN110120322B (en) | 2018-02-06 | 2018-02-06 | Totally enclosed low-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110120322B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540639A (en) * | 2020-05-14 | 2020-08-14 | 湖南创安防爆电器有限公司 | Vacuum contactor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002560A (en) * | 1998-09-02 | 1999-12-14 | Eaton Corporation | Circuit breaker contact wear indicator |
| EP1653492A1 (en) * | 2004-10-26 | 2006-05-03 | EATON Corporation | Adjustment member and method of its use for circuit interrupters |
| CN2870134Y (en) * | 2006-02-10 | 2007-02-14 | 西安铁路科学技术研究发展有限责任公司 | Intelligent phase-selection indoor high-pressure vacuum circuit breaker |
| CN101178989A (en) * | 2006-11-08 | 2008-05-14 | 西安维能电气有限公司 | Longitudinal rotary type function composite type vacuum isolation circuit breakers |
| CN102044376A (en) * | 2011-01-05 | 2011-05-04 | 郑逸扬 | Low-voltage universal vacuum circuit breaker |
| EP2518133A2 (en) * | 2011-04-27 | 2012-10-31 | Hitachi, Ltd. | Grease for electrical contact and slide electricity structure, power switch, vacuum circuit breaker, vacuum-insulated switchgear assembling method |
| WO2014109092A1 (en) * | 2013-01-11 | 2014-07-17 | 三菱電機株式会社 | Manual switching device for electromagnetic operation mechanism |
| CN104952665A (en) * | 2015-05-20 | 2015-09-30 | 保定通力电器设备有限公司 | Radiating outdoor vacuum breaker |
| CN205609430U (en) * | 2016-04-21 | 2016-09-28 | 西安铁路科学技术研究发展有限责任公司 | Ground control auto -passing phase separation system uses vacuum load switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9842713B2 (en) * | 2016-03-30 | 2017-12-12 | Eaton Corporation | Vacuum circuit interrupter |
-
2018
- 2018-02-06 CN CN201810118442.4A patent/CN110120322B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002560A (en) * | 1998-09-02 | 1999-12-14 | Eaton Corporation | Circuit breaker contact wear indicator |
| EP1653492A1 (en) * | 2004-10-26 | 2006-05-03 | EATON Corporation | Adjustment member and method of its use for circuit interrupters |
| CN2870134Y (en) * | 2006-02-10 | 2007-02-14 | 西安铁路科学技术研究发展有限责任公司 | Intelligent phase-selection indoor high-pressure vacuum circuit breaker |
| CN101178989A (en) * | 2006-11-08 | 2008-05-14 | 西安维能电气有限公司 | Longitudinal rotary type function composite type vacuum isolation circuit breakers |
| CN102044376A (en) * | 2011-01-05 | 2011-05-04 | 郑逸扬 | Low-voltage universal vacuum circuit breaker |
| EP2518133A2 (en) * | 2011-04-27 | 2012-10-31 | Hitachi, Ltd. | Grease for electrical contact and slide electricity structure, power switch, vacuum circuit breaker, vacuum-insulated switchgear assembling method |
| WO2014109092A1 (en) * | 2013-01-11 | 2014-07-17 | 三菱電機株式会社 | Manual switching device for electromagnetic operation mechanism |
| CN104952665A (en) * | 2015-05-20 | 2015-09-30 | 保定通力电器设备有限公司 | Radiating outdoor vacuum breaker |
| CN205609430U (en) * | 2016-04-21 | 2016-09-28 | 西安铁路科学技术研究发展有限责任公司 | Ground control auto -passing phase separation system uses vacuum load switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110120322A (en) | 2019-08-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105490199B (en) | Withdrawable air insulation ring main unit | |
| CN202034297U (en) | Outdoor high-pressure permanent-magnet vacuum circuit breaker | |
| CN105047472B (en) | A kind of monopole vacuum contactor | |
| CN102280304A (en) | Moving contact assembly and intelligent electromagnetic isolation driving switch applying same | |
| CN201282083Y (en) | Vaccum relay | |
| CN201956268U (en) | Indoor solid-sealed type high-voltage vacuum circuit breaker | |
| CN110120322B (en) | Totally enclosed low-voltage circuit breaker | |
| CN110120321B (en) | Closed low-voltage circuit breaker | |
| CN209118985U (en) | Three station high-pressure vacuum breakers | |
| CN103489696A (en) | 10kV box type double-break vacuum circuit beaker of built-in disconnector structure | |
| WO2016034088A1 (en) | Composite combined electric appliance | |
| CN202094043U (en) | Moving contact assembly and electromagnetic isolation driving intelligent switch using same | |
| CN202650955U (en) | Outdoor high-voltage vacuum circuit breaker | |
| CN205016452U (en) | Single -stage vacuum contactor and multistage vacuum contactor thereof | |
| CN202159628U (en) | Outdoor high-voltage alternating-current sulfur hexafluoride load switch | |
| CN105719895A (en) | Vacuum arc-extinguishing chamber of novel double-acting mechanism | |
| CN203491181U (en) | 10kV box-type double-break vacuum circuit breaker structure with built-in isolation switch | |
| CN203205331U (en) | High-voltage load switch | |
| CN205489228U (en) | Telescopic formula air insulation looped netowrk cabinet | |
| CN205029237U (en) | But totally enclosed touch switch cabinet based on permanent magnet operating mechanism | |
| CN109755050A (en) | One or two fusion serial column upper switch | |
| CN104143466A (en) | Earth switch assembly unit and high-speed earth switch thereof | |
| CN2598120Y (en) | Isolative switch mated with vacuum circuit breaker on column | |
| CN201259867Y (en) | Magnetic explosion proof switch | |
| CN203536279U (en) | Disconnecting switch structure |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |