CN101866788A - DC circuit breaker for improving arc blowout effect - Google Patents
DC circuit breaker for improving arc blowout effect Download PDFInfo
- Publication number
- CN101866788A CN101866788A CN200910049371A CN200910049371A CN101866788A CN 101866788 A CN101866788 A CN 101866788A CN 200910049371 A CN200910049371 A CN 200910049371A CN 200910049371 A CN200910049371 A CN 200910049371A CN 101866788 A CN101866788 A CN 101866788A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- arc
- insulation shell
- moving contact
- binding post
- 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
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a DC circuit breaker for improving the arc blowout effect, which is formed by an electromagnetic-type circuit breaker and two permanent magnets, wherein the electromagnetic-type circuit comprises an insulation shell and a movable contact, the two permanent magnets are respectively arranged on the insulation shell at two side of the route of the movable contact, and the direction of the magnetic pole of the two permanent magnets is identical to each other. The interior of an arc blowout chamber of the electromagnetic-type circuit breaker provides no arc blowout plate so when the movable contact and the static contact are opened to produce the electric arc, the magnetic field between the two permanent magnets is utilized to ensure that the electric arc current is transferred away from the contact, the deflected electric arc and the lengthened electric arc route increase the voltage drop of the electric arc and reduces the energy of the electric arc, and the loss of the movable and the static contacts is reduced, and the service life of the circuit breaker is prolonged.
Description
Technical field:
The present invention relates to electricity field, relate in particular to circuit breaker, particularly a kind of dc circuit breaker that improves arc blowout effect.
Background technology:
In the prior art, electromagnetic breaker is widely used in the power supply using systems such as the communications field.The mechanical device of electromagnetic breaker and binding post are installed in the plastic casing of a pair of insulation.Wherein, one solenoid that can lead to load current and voltage is arranged in the hydraulic electromagnetic breaker, solenoid be wrapped in a time-delay pipe around, time-delay has an iron core in the pipe, iron core can be by the terminal pole shoe adhesive campaign of time-delay pipe under by the magnetic flux of support and armature.Support be used for the support coils skeleton and by around around coil and a movable armature.Armature can be opened electrical contact by contacting a snap close.During electromagnetic breaker work, no matter be owing to the situation of overcurrent is arranged or, all can produce an electric arc because manual operation makes the moving contact of the mechanical device of circuit breaker separate with fixed contact.Arc control device in the electromagnetic breaker can cut apart, cool off electric arc and impel it to extinguish, and the gas that produces of discharging.So just avoided too much heat or pressure in housing.The arc quenching plate of U-shaped is installed in the arc control device, the groove that has bevel in the housing, arc quenching plate is installed in the groove, the arrangement of arc quenching plate be along moving contact from the make position that contacts with fixed contact on the another one terminal to the movement locus direction of the open position that leaves from fixed contact; When circuit breaker during in make position, current path flows to fixed contact from the moving contact on the acting arm.But the arc blowout effect of arc quenching plate is limited.
Summary of the invention:
The object of the present invention is to provide a kind of dc circuit breaker that improves arc blowout effect, the described this dc circuit breaker that improves arc blowout effect will solve the limited technical problem of arc blowout effect of the arc quenching plate of electromagnetic breaker in the prior art.
This dc circuit breaker that improves arc blowout effect of the present invention is made of an electromagnetic breaker and two permanent magnets, described electromagnetic breaker includes insulation shell, first binding post, second binding post, solenoid, the time-delay pipe, iron core, support, coil rack, armature, snap close, acting arm, operator and keeper, described first binding post, second binding post, solenoid, the time-delay pipe, iron core, support, coil rack, armature, snap close, acting arm, operator and keeper all are arranged in the described insulation shell, solenoid is arranged on the coil rack, coil rack be arranged on the time-delay pipe around, iron core is arranged in the time-delay pipe, stent support coil rack and armature, one end of armature is arranged on the top of iron core, the stroke of the other end of armature is through snap close, snap close is arranged in the stroke of keeper, keeper is arranged between acting arm and the operator, first binding post is connected with solenoid by lead, solenoid is connected with moving contact by lead, moving contact is arranged on the acting arm, be fixedly connected with a fixed contact on second binding post, be provided with the slit in the insulation shell of moving contact stroke both sides, wherein, described two permanent magnets are separately positioned on the insulation shell of moving contact stroke both sides, and it is identical that the magnetic pole of two permanent magnets is provided with direction.
Further, the insulation shell of moving contact stroke both sides is provided with a magnet holder, and described two permanent magnets are separately positioned on the two ends of magnet holder.
Further, the insulation shell of moving contact stroke both sides is provided with the arc quenching plate mounting groove, and the inboard of described magnet holder is provided with flange, and magnet holder is installed on the described arc quenching plate mounting groove by described flange.
Further, any one described permanent magnet constitutes by containing the neodymium alloy piece.
Further, the lateral location of housing is provided with an exhaust outlet.
Concrete, electromagnetic breaker described in the present invention and first binding post wherein, second binding post, solenoid, the time-delay pipe, iron core, support, coil rack, armature, snap close, acting arm, operator and keeper, described first binding post, second binding post, solenoid, the time-delay pipe, iron core, support, coil rack, armature, snap close, acting arm, operator and keeper and interconnect structure and all adopt known technology of the prior art, relevant above-mentioned known solution, those skilled in the art all understands, and does not repeat them here.
Operation principle of the present invention is: no longer be provided with arc quenching plate in the arc control device of electromagnetic breaker, described two permanent magnets are arranged on the insulation shell of moving contact stroke both sides.First binding post and second binding post are connected in the protected loop.Moving contact contacts with fixed contact, and electric current can flow through solenoid.Unless when electric current flows through, it is disconnected, forms a loop with loading on otherwise electromagnetic breaker provides continuous electric current by the manual operation operator.When overload or short circuit appear in electric current in the solenoid, the iron core that the electromagnetic energy that solenoid produces promotes time-delay pipe the inside moves upward, attraction armature rotates, the little pin that stir on the snap close lower end of armature rotates counterclockwise it, to discharge keeper, under the effect of spring force, can make acting arm move to open position.When moving contact and fixed contact are opened, between the contact of motion, can produce electric arc, it is first magnetic field of central axis with the arc current that arc current produces one, from the direction of arc current, judges that with " right-hand rule " this first magnetic field is clockwise direction.Have one second magnetic field between two permanent magnets, such first magnetic field and second magnetic field have produced a power value jointly, and this power value makes the electric arc outward movment.The result shifts arc current, away from contact.The arc current that departs from outwards moves to the place, slit of housing, and heat that arc current produces and pressure are directly discharged from the inside of housing.The path of the electric arc of deflection and elongation electric arc has increased the voltage drop of electric arc, has reduced the energy of electric arc, makes moving contact and fixed contact reduce damage, has prolonged the life-span of circuit breaker.
The present invention compares with prior art, and its effect is actively with tangible.The present invention has cancelled arc quenching plate in the arc control device of existing electromagnetic breaker, on the insulation shell of moving contact stroke both sides, be provided with two permanent magnets, open when producing electric arc at moving contact and fixed contact, utilize two magnetic fields between the permanent magnet that arc current is shifted and away from contact, the electric arc of deflection and the arc path of elongation have increased the voltage drop of electric arc, reduce the energy of electric arc, made moving contact and fixed contact reduce damage, prolonged the life-span of circuit breaker.
Description of drawings:
Fig. 1 is a kind of structural representation that improves the dc circuit breaker of arc blowout effect of the present invention.
Fig. 2 is a kind of structural representation of dc circuit breaker when magnet holder moves on on one side that improves arc blowout effect of the present invention.
Fig. 3 is the upward view of the moving contact in a kind of dc circuit breaker that improves arc blowout effect of the present invention.
Fig. 4 is another upward view of the moving contact in a kind of dc circuit breaker that improves arc blowout effect of the present invention.
Fig. 5 is another upward view of the moving contact in a kind of dc circuit breaker that improves arc blowout effect of the present invention.
Fig. 6 is the stereogram of the magnet holder in a kind of dc circuit breaker that improves arc blowout effect of the present invention.
Embodiment:
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, a kind of dc circuit breaker of arc blowout effect that improves of the present invention is by an electromagnetic breaker, a permanent magnet 14 and a permanent magnet 19 constitute, described electromagnetic breaker includes insulation shell 11, first binding post 20, second binding post 21, solenoid 4, the time-delay pipe, iron core, support, coil rack, armature 1, snap close 10, acting arm 6, operator 2 and keeper 5, described first binding post 20, second binding post 21, solenoid 4, time-delay pipe 3, iron core, support, coil rack, armature 1, snap close 10, acting arm 6, operator 2 and keeper 5 all are arranged in the described insulation shell 11, solenoid 4 is arranged on the coil rack, coil rack be arranged on time-delay pipe 3 around, iron core is arranged in the time-delay pipe 3, stent support coil rack and armature 1, one end of armature 1 is arranged on the top of iron core, the stroke of the other end of armature 1 is through snap close 10, snap close 10 is arranged in the stroke of keeper 5, keeper 5 is arranged between acting arm 6 and the operator 2, first binding post 20 is connected with solenoid 4 by lead 22, solenoid 4 is connected with moving contact 24 by lead 23, moving contact 24 is arranged on the acting arm 6, be fixedly connected with a fixed contact 25 on second binding post 21, be provided with slit 13 in the insulation shell 11 of moving contact 24 stroke both sides, wherein, permanent magnet 14 and permanent magnet 19 are separately positioned on the insulation shell 11 of moving contact 24 stroke both sides, and it is identical that the magnetic pole of permanent magnet 14 and permanent magnet 19 is provided with direction.
As shown in Figure 6, further, the insulation shell 11 of moving contact 24 stroke both sides is provided with a magnet holder 16, and permanent magnet 14 and permanent magnet 19 are separately positioned on the two ends of magnet holder 16.
Further, the insulation shell 11 of moving contact 24 stroke both sides is provided with arc quenching plate mounting groove 12, and the inboard of described magnet holder 16 is provided with flange 26, and magnet holder 16 is installed on the described arc quenching plate mounting groove 12 by described flange 26.
Further, permanent magnet 14 and permanent magnet 19 constitute by containing the neodymium alloy piece.
Further, the lateral location of insulation shell 11 is provided with an exhaust outlet.
As Fig. 3, Fig. 4 and shown in Figure 5, in one embodiment of the invention, in the arc control device of electromagnetic breaker, no longer be provided with arc quenching plate, permanent magnet 14 and permanent magnet 19 are arranged on the insulation shell 11 of moving contact 24 stroke both sides.First binding post 20 and second binding post 21 are connected in the protected loop.Moving contact 24 contacts with fixed contact 25, and electric current can flow through solenoid 4.Unless when electric current flows through, it is disconnected, forms a loop with loading on otherwise electromagnetic breaker provides continuous electric current by manual operation operator 2.When overload or short circuit appear in electric current in the solenoid 4, the iron core that the electromagnetic energy that solenoid 4 produces promotes time-delay pipe 3 the insides moves upward, attract armature 1 to rotate, the little pin that stir on the snap close 10 lower end of armature 1 rotates counterclockwise it, to discharge keeper 5, under the effect of spring force, can make acting arm 6 move to open position.When moving contact 24 and fixed contact 25 are opened, between the contact of motion, can produce electric arc, it is first magnetic field 18 of central axis with arc current A that arc current A produces one, from the direction of arc current A, judges that with " right-hand rule " this first magnetic field 18 is clockwise directions.Have one second magnetic field 15 between permanent magnet 14 and the permanent magnet 19, such first magnetic field 18 and second magnetic field 15 have produced a power value 17 jointly, and this power value 17 makes the electric arc outward movment.The result shifts arc current A, away from contact.The arc current B that departs from outwards moves to 13 places, slit of insulation shell 11, and heat that arc current B produces and pressure are directly discharged from the inside of insulation shell 11.The path of the electric arc of deflection and elongation electric arc has increased the voltage drop of electric arc, has reduced the energy of electric arc, makes moving contact 24 and fixed contact 25 reduce damage, has prolonged the life-span of circuit breaker.
In the embodiment of Fig. 6, magnet holder 16 is designed to be installed to arc quenching plate mounting groove 12 places of original circuit breaker on the insulation shell 11.At the two ends of magnet holder 16 zone that falls in 27 is arranged respectively, be used for placing permanent magnet 14 and permanent magnet 19.
As shown in Figure 3, arc current A from as the position described Fig. 2 by moving to as the arc current B position among Fig. 5 and Fig. 2 at a long curved path, be the result that magnetic flux caused who produces by permanent magnet 14 and permanent magnet 19.
It should be noted that and select the magnet of different parameters can provide the arc deflection position different effects.Certainly, increase more magnet, to realize the bigger deflection of arc current.
Claims (5)
1. dc circuit breaker that improves arc blowout effect, constitute by an electromagnetic breaker and two permanent magnets, described electromagnetic breaker includes insulation shell, first binding post, second binding post, solenoid, the time-delay pipe, iron core, support, coil rack, armature, snap close, acting arm, operator and keeper, described first binding post, second binding post, solenoid, the time-delay pipe, iron core, support, coil rack, armature, snap close, acting arm, operator and keeper all are arranged in the described insulation shell, solenoid is arranged on the coil rack, coil rack be arranged on the time-delay pipe around, iron core is arranged in the time-delay pipe, stent support coil rack and armature, one end of armature is arranged on the top of iron core, the stroke of the other end of armature is through snap close, snap close is arranged in the stroke of keeper, keeper is arranged between acting arm and the operator, first binding post is connected with solenoid by lead, solenoid is connected with moving contact by lead, moving contact is arranged on the acting arm, be fixedly connected with a fixed contact on second binding post, be provided with the slit in the insulation shell of moving contact stroke both sides, it is characterized in that: described two permanent magnets are separately positioned on the insulation shell of moving contact stroke both sides, and it is identical that the magnetic pole of two permanent magnets is provided with direction.
2. the dc circuit breaker that improves arc blowout effect as claimed in claim 1 is characterized in that: the insulation shell of moving contact stroke both sides is provided with a magnet holder, and described two permanent magnets are separately positioned on the two ends of magnet holder.
3. the dc circuit breaker that improves arc blowout effect as claimed in claim 2, it is characterized in that: the insulation shell of moving contact stroke both sides is provided with the arc quenching plate mounting groove, the inboard of described magnet holder is provided with flange, and magnet holder is installed on the described arc quenching plate mounting groove by described flange.
4. the dc circuit breaker that improves arc blowout effect as claimed in claim 1 is characterized in that: any one described permanent magnet constitutes by containing the neodymium alloy piece.
5. the dc circuit breaker that improves arc blowout effect as claimed in claim 1 is characterized in that: the lateral location of housing is provided with an exhaust outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049371A CN101866788A (en) | 2009-04-14 | 2009-04-14 | DC circuit breaker for improving arc blowout effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049371A CN101866788A (en) | 2009-04-14 | 2009-04-14 | DC circuit breaker for improving arc blowout effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101866788A true CN101866788A (en) | 2010-10-20 |
Family
ID=42958455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910049371A Pending CN101866788A (en) | 2009-04-14 | 2009-04-14 | DC circuit breaker for improving arc blowout effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101866788A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104040666A (en) * | 2011-10-25 | 2014-09-10 | Abb技术有限公司 | Direct current breaker and electrical power system comprising such direct current breaker |
| CN104347326A (en) * | 2013-07-26 | 2015-02-11 | 西门子公司 | Switching device |
| CN110211850A (en) * | 2019-07-05 | 2019-09-06 | 浙江百事宝电器股份有限公司 | Safety-type hydraulic electromagnetic circuit breaker and method for dividing |
| CN112219253A (en) * | 2018-03-16 | 2021-01-12 | 埃伦贝格尔及珀恩斯根有限公司 | Protective switch for separating current loops |
-
2009
- 2009-04-14 CN CN200910049371A patent/CN101866788A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104040666A (en) * | 2011-10-25 | 2014-09-10 | Abb技术有限公司 | Direct current breaker and electrical power system comprising such direct current breaker |
| CN104347326A (en) * | 2013-07-26 | 2015-02-11 | 西门子公司 | Switching device |
| CN112219253A (en) * | 2018-03-16 | 2021-01-12 | 埃伦贝格尔及珀恩斯根有限公司 | Protective switch for separating current loops |
| CN110211850A (en) * | 2019-07-05 | 2019-09-06 | 浙江百事宝电器股份有限公司 | Safety-type hydraulic electromagnetic circuit breaker and method for dividing |
| CN110211850B (en) * | 2019-07-05 | 2024-04-30 | 浙江百事宝电器股份有限公司 | Safety hydraulic electromagnetic circuit breaker and breaking method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107533927B (en) | Contactor assembly | |
| US9378914B2 (en) | Contact device and electromagnetic contactor using the same | |
| US11410825B2 (en) | Disconnecting device for interrupting a direct current of a current path as well as a circuit breaker | |
| CN106716579B (en) | Arc control for contactor assembly | |
| EP2427897B1 (en) | Electricity meter contact arrangement | |
| ATE389235T1 (en) | WELD-FREE CONTACT FOR ELECTROMAGNETIC CONTACTORS | |
| CN103140910A (en) | Contact mechanism and electromagnetic contactor using same | |
| US20130093544A1 (en) | Bistable high-performance miniature relay | |
| US20120182097A1 (en) | Electrical switching device | |
| CN107492467B (en) | Medium voltage contactor | |
| EP3846195A1 (en) | Direct current relay | |
| CN107924791A (en) | Electric power opening and closing device | |
| CN201387860Y (en) | Direct current (DC) circuit breaker promoting arc blowout in virtue of magnets | |
| US20150035631A1 (en) | Electromagnetic switch | |
| CN101866788A (en) | DC circuit breaker for improving arc blowout effect | |
| CZ271794A3 (en) | Arrangement of contact springs for relay for conducting and switching of high currents | |
| CN113035648A (en) | Contact device and electromagnetic switch | |
| WO2017095672A1 (en) | Electrical switching apparatus and slot motor therefor | |
| EP2427892B1 (en) | Magnetic latching actuator | |
| EP3690917B1 (en) | High-voltage relay resistant to instantaneous great-current impact | |
| CN205959905U (en) | Novel equilibrant formula magnetism ware that keeps in contact | |
| CN214505392U (en) | Contact device and switching device | |
| CN109716471B (en) | Low-voltage switchgear with electromagnetic contact load support | |
| CN216054511U (en) | Easy-to-assemble short-circuit current resistant direct current contactor contact structure | |
| CN202189739U (en) | Circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101020 |