CN201910375U - Mini-type direct current break - Google Patents
Mini-type direct current break Download PDFInfo
- Publication number
- CN201910375U CN201910375U CN2011200057088U CN201120005708U CN201910375U CN 201910375 U CN201910375 U CN 201910375U CN 2011200057088 U CN2011200057088 U CN 2011200057088U CN 201120005708 U CN201120005708 U CN 201120005708U CN 201910375 U CN201910375 U CN 201910375U
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- CN
- China
- Prior art keywords
- permanent magnet
- arc
- magnetic
- adsorbed
- magnetic conduction
- 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.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an improved mini-type direct current break, which solves the problems that the magnetic energy of a permanent magnet drops at the arc high temperature, the work reliability is influenced and the like in the prior art. The mini-type direct current break comprises an insulation substrate, an insulation cover, a bimetallic strip arranged between the insulation substrate and the insulation cover, a magnetic release, a handle, a latch mechanism, a flexible coupling, a moving contact, a fixed contact, an outlet terminal binding post and an arc extinguish chamber. The mini-type direct current break is technically characterized in that a magnetic blowout arc extinguish device comprising a vertically arranged permanent magnet and two magnetic conduction sheets is arranged left below the outlet terminal binding post of an arc generating zone; the N pole end of the permanent magnet outside which a thermal sleeve is coated faces upward, and the S pole end of the permanent magnet faces downward; the magnetic conduction sheets seamlessly adsorbed at the N pole end and the S pole end of the permanent magnet are respectively packaged at the inner sides of the insulation substrate and the insulation cover by adopting a flash barrier made of a heat-resisting material; and an arc striking angle is connected with the fixed contact and extends below the arc extinguish chamber. The utility model has a compact structure and a reasonable design, not only is capable of increasing the working voltage and the arc breaking capacity but also is capable of obviously reducing the electrical wear of the contacts and prolonging the service lives of the contacts.
Description
Technical field
The utility model relates to a kind of low-voltage electrical apparatus switch that is used for direct current network, particularly a kind of improved minisize dc circuit breaker.Being mainly used in the power supply that rated operational voltage can reach kilovolt level switches and circuit control place.
Background technology
At present, the minisize dc circuit breaker is a kind of appliance switch very widely that is applied in the direct current network, and when overload or short trouble occurring in the circuit, it can play the effect that disconnects protected circuit.General one pole (1P) arc control device have a contact room, and the two poles of the earth (2P) has two contact rooms, four contact rooms are arranged to four utmost points (4P), by the same arc control device that these contact rooms are combined into, are referred to as multipole arc control device.Constantly bringing forth new ideas and develop along with the appliance switch technology, various minisize dc circuit breakers emerge in succession, for example China Patent No. be 01223666.7,200720152786.4 and number of patent application be to disclose some minisize dc circuit breakers in the documents such as 200910049371.8, its basic structure comprise insulating base, insulating lid and be assembled in therebetween bimetal leaf, magnetic release, handle, latching device, be flexible coupling, parts such as moving contact, fixed contact, leading-out terminal binding post and arc control device.The structural design of arc control device is roughly the same, all is the both sides of the arc region that produces when being arranged on dynamic and static contact and disconnecting with two permanent magnets, and under the effect of electromagnetic force, electric arc enters arc control device and extinguished by arc extinguishing grid pieces.But under the hot environment that electric arc produces, the magnetic energy of permanent magnet can descend fast along with the rising of temperature, can be influential to working reliably and with long-term of circuit breaker, and operating voltage is not high, is difficult to satisfy the requirement of technology fast development.
The utility model content
The purpose of this utility model provides a kind of improved minisize dc circuit breaker, it has solved, and permanent magnet magnetic energy descends, influences problems such as functional reliability under the high arc temperature that prior art exists, it compared with similar products, has compact conformation, reasonable in design, can improve operating voltage and current interruption ability, can obviously alleviate the contact electrical wear again, prolong the contact characteristics in useful life.
The technical scheme that the utility model adopted is: this minisize dc circuit breaker comprises insulating base, insulating lid and be assembled in therebetween bimetal leaf, magnetic release, handle, latching device, be flexible coupling, moving contact, fixed contact, leading-out terminal binding post and arc control device, its technical essential is: the lower left that produces the described leading-out terminal binding post in district at electric arc is provided with the magnetic quenching device, described magnetic quenching device comprises that is erect a permanent magnet and the seamless respectively N of being adsorbed on that places, the magnetic conduction sheet that S is extreme, the N of the outside described permanent magnet that coats with thermal sleeve extremely up, S extremely down, seamlessly be adsorbed on the inboard that flash barrier that the extreme described magnetic conduction sheet of described permanent magnet N adopts heat proof material to make is encapsulated in described insulating base, seamlessly be adsorbed on the inboard that flash barrier that the extreme described magnetic conduction sheet of described permanent magnet S adopts heat proof material to make is encapsulated in described insulating lid, arc leading angle is connected with described fixed contact, and extends to the below of described arc control device.
The seamless described magnetic conduction sheet that is adsorbed on described permanent magnet two ends be positioned at driveing of described moving contact, fixed contact away from described permanent magnet one end apart from the center.
Advantage and the good effect that the utlity model has are: because the utility model is on the basis of the basic structure that does not change existing minisize dc circuit breaker, only adopt by one and erect permanent magnet and the seamless respectively N of being adsorbed on that places, the extreme magnetic conduction sheet of S is as the element of magnetic quenching device, pole center is caused moving with short magnetic conduction sheet, fixed contact is opened the center of distance, and two magnetic conduction sheets are encapsulated in the inboard of insulating base and lid respectively with the flash barrier that heat proof material is made, structure behind the increase magnetic quenching device is still compact, so it is reasonable in design, and make full use of the magnetic field that the permanent magnet arc quenching system is produced, with moving of circuit breaker, the electric arc that fixed contact is produced when disconnecting is under the effect of electromagnetic force, blow into arc control device rapidly, electric arc is elongated laggardly goes into arc control device and is divided into a lot of segments by arc extinguishing grid pieces again, increased the voltage drop of electric arc, arc temperature is descended rapidly, reduced arc energy, quickened arc extinction, improved the current interruption ability, alleviate the contact electrical wear, improved the contact life-span.Because of adopting multipole control, so operating voltage can reach 800V, the outage back loading is as safe as a house.Therefore, the utility model can improve operating voltage and current interruption ability compared with similar products, can obviously alleviate the contact electrical wear again, prolongs contact useful life.It has solved, and permanent magnet magnetic energy descends, influences problems such as functional reliability under the high arc temperature that prior art exists.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the partial schematic diagram of a kind of concrete structure of the present utility model;
Fig. 2 is the cutaway view of Fig. 1 along the A-A line.
Sequence number explanation among the figure: 1 insulating base, 2 leading-out terminal binding posts, 3 moving contacts, 4 fixed contacts, 5 thermal sleeves, 6 permanent magnets, 7 arc control device, 8 arc leading angles, 9 insulating lids, 10 limited parts, 11 magnetic conduction sheets, 12 flash barriers.
Embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1～2.This minisize dc circuit breaker is improved on the basis of the basic structure of existing minisize dc circuit breaker, it is except that the insulating base 1, the insulating lid 9 that comprise existing minisize dc circuit breaker and be assembled in the basic structures such as bimetal leaf, magnetic release, handle, latching device, the (not shown) that is flexible coupling, moving contact 3, fixed contact 4, leading-out terminal binding post 2 and arc control device 7 between insulating base 1, the insulating lid 9, mainly is provided with the magnetic quenching device in the lower left that electric arc produces the leading-out terminal binding post 2 in district.This magnetic quenching device is made up of the rubidium iron boron rare-earth permanent magnet 6 of an employing high magnetic characteristics of erect placing and two seamless respectively extreme magnetic conduction sheets 11 of N, S that are adsorbed on permanent magnet 6.The N of the permanent magnet 6 that outside usefulness thermal sleeve 5 coats extremely up, S extremely down, the flash barrier 12 that the seamless extreme magnetic conduction sheet 11 of N that is adsorbed on permanent magnet 6 adopts heat proof material to make is encapsulated in the inboard of insulating base 1, and the flash barrier 12 that the seamless extreme magnetic conduction sheet 11 of S that is adsorbed on permanent magnet 6 adopts heat proof material to make is encapsulated in the inboard of insulating lid 9.Arc leading angle 8 is connected with fixed contact 4, and extends to the below of arc control device 7.For pole center being caused the center that dynamic and static contact 3,4 is opened distance,, be positioned at driveing of moving contact, fixed contact apart from the center with a seamless end that is adsorbed on the magnetic conduction sheet 11 at permanent magnet 6 two ends away from permanent magnet 6 with short magnetic conduction sheet 11.Limited part 10 is arranged on the bottom of insulating base 1 and installs and uses for the card rail.The polarity of permanent magnet 11 is N-S at 1P.When multipole assembling, 2P is S-N, and 3P is N-S, and 4P is S-N, by that analogy.Insulating lid 9 connects with 1 pair of insulating base, and to the debugging of opening circuit of each one pole minisize dc, qualified back gets final product the riveting of minisize dc circuit breaker is firm with tubular rivet.
The installation of this minisize dc circuit breaker, debugging and use are all basic identical with existing dc circuit breaker.
Claims (2)
1. minisize dc circuit breaker, comprise insulating base, insulating lid and be assembled in therebetween bimetal leaf, magnetic release, handle, latching device, be flexible coupling, moving contact, fixed contact, leading-out terminal binding post and arc control device, it is characterized in that: the lower left that produces the described leading-out terminal binding post in district at electric arc is provided with the magnetic quenching device, described magnetic quenching device comprises that is erect a permanent magnet and the seamless respectively N of being adsorbed on that places, the magnetic conduction sheet that S is extreme, the N of the outside described permanent magnet that coats with thermal sleeve extremely up, S extremely down, seamlessly be adsorbed on the inboard that flash barrier that the extreme described magnetic conduction sheet of described permanent magnet N adopts heat proof material to make is encapsulated in described insulating base, seamlessly be adsorbed on the inboard that flash barrier that the extreme described magnetic conduction sheet of described permanent magnet S adopts heat proof material to make is encapsulated in described insulating lid, arc leading angle is connected with described fixed contact, and extends to the below of described arc control device.
2. as the described minisize dc circuit breaker of claim 1., it is characterized in that: the seamless described magnetic conduction sheet that is adsorbed on described permanent magnet two ends be positioned at driveing of described moving contact, fixed contact away from described permanent magnet one end apart from the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200057088U CN201910375U (en) | 2011-01-11 | 2011-01-11 | Mini-type direct current break |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200057088U CN201910375U (en) | 2011-01-11 | 2011-01-11 | Mini-type direct current break |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910375U true CN201910375U (en) | 2011-07-27 |
Family
ID=44302575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200057088U Expired - Fee Related CN201910375U (en) | 2011-01-11 | 2011-01-11 | Mini-type direct current break |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262984A (en) * | 2011-01-11 | 2011-11-30 | 沈阳二一三控制电器制造有限公司 | Mini-DC (direct current) breaker |
| CN103326177A (en) * | 2013-06-03 | 2013-09-25 | 四川永贵科技有限公司 | Magnetic quenching type high voltage electric connector |
-
2011
- 2011-01-11 CN CN2011200057088U patent/CN201910375U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262984A (en) * | 2011-01-11 | 2011-11-30 | 沈阳二一三控制电器制造有限公司 | Mini-DC (direct current) breaker |
| CN103326177A (en) * | 2013-06-03 | 2013-09-25 | 四川永贵科技有限公司 | Magnetic quenching type high voltage electric connector |
| CN103326177B (en) * | 2013-06-03 | 2016-06-29 | 四川永贵科技有限公司 | A kind of magnetic quenching formula high-voltage electric connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20170111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |