CN102592908B - Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker - Google Patents
Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker Download PDFInfo
- Publication number
- CN102592908B CN102592908B CN 201210040952 CN201210040952A CN102592908B CN 102592908 B CN102592908 B CN 102592908B CN 201210040952 CN201210040952 CN 201210040952 CN 201210040952 A CN201210040952 A CN 201210040952A CN 102592908 B CN102592908 B CN 102592908B
- Authority
- CN
- China
- Prior art keywords
- arc
- iron
- grid sheet
- magnetic
- little
- 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
Links
Images
Landscapes
- Breakers (AREA)
Abstract
The invention discloses a low current electric arc magnetic blow-out device and an arc-blowing method of a medium-pressure direct current breaker. According to the device, a V-shaped arc extinguish chamber grid sheet is adopted, a magnet exciting coil is arranged on the side surface of an arc extinguish chamber shell, which is parallel to the grid sheet, the magnet exciting coil is externally connected with a low current detecting and judging system, and a piece of Y-shaped magnetism enhancing armature iron is arranged at each of the two sides of the arc extinguish chamber shell, which correspond to the regions of movable and fixed contacts and an arc running channel. According to the magnetic blow-out device, the magnetic fields of the regions of the contacts and the arc running channel are effectively enhanced, thereby playing obvious effects on the facts that lower current electric arcs in the contact region can fast enter the grid sheet, the electric arcs can be broken successfully, and the fault probability of the device can be reduced. In addition, the device is compact in structure, can reasonably utilize optimizable breaker spatial layout and results in the reduction of the volume.
Description
Technical field
The present invention designs a kind of quick-tripping device that is applied to dc circuit breaker, particularly a kind of middle straightening stream circuit breaker little arc current magnetic blow-out device and arc blow-out method thereof.
Background technology
Along with modernization constantly advances, contacting of DC power-supply system and industrial development and the common people's daily life is more tight, has all adopted DC power-supply system in many important industries such as urban rail transit in China, solar power generation, smelting, chemical industry, ship electricity, mine at present.Wherein, dc circuit breaker has the defencive function of reliable cut-out DC loop fault electric current, is the assurance of DC power-supply system safe operation.Develop rapidly and the industrial traffic department modern while progressively in China's economy, also more strict to the requirement of electric power system reliability, thus more and more higher requirement has been proposed its break performance.
When circuit breaks down electric current, require circuit breaker in the shortest time, it to be cut-off.After the circuit breaker dynamic/static contact separated, the electric arc between contact leaned on the separation of contact on the one hand and by tangential elongate (parallel arc direction of principal axis), can be elongated (vertically arc direction of principal axis) by normal direction because of the magnetic field that the galvanic circle electric current produces on the other hand.Wherein, latter's normal direction is elongated electric arc not only makes arc length increase, and also makes electric arc produce transverse movement, and makes electric arc enter the grid sheet rapidly to cut and cool off, electric arc is extinguished rapidly, is the key factor that circuit breaker can successful disjunction fault current.In addition, when the current value of disjunction is big, contact and to run arc road regional magnetic field intensity bigger, the magnetic blow-out arcing is obvious, so the large-current electric arc is easier to cut-off.But when cut-offfing little arc current, the magnetic blow-out effect obviously weakens, the transverse magnetic field electric power that little arc current is subjected to is too small, causing electric arc can not enter the grid sheet rapidly cools off and cuts, but rest on long-time sustained combustion between the contact, cause dynamic/static contact seriously to ablate, spillage of material, contact surface concentration of local molten drop splashes, and finally causes cut-offfing failure.Therefore, the little arc current disjunction of circuit breaker always be the device for switching industry research emphasis and difficult point.
Summary of the invention
The objective of the invention is to: utilize blowout coil, design and provide a kind of and can be applied to dc circuit breaker, can effectively strengthen the voltage contact area electromagnetic field intensity, and the magnetic blow-out device of the little arc current of successful disjunction and arc blow-out method thereof.
The little arc current magnetic blow-out of straightening stream circuit breaker device in a kind of comprises arc control device grid sheet, magnet exciting coil, is connected little current detecting on the magnet exciting coil judges that system, the iron core of installing, the Y type that is fixed in the iron core both sides and clamps iron core abreast increase the magnetic armature (iron), run arc road, moving contact and fixed contact in the middle of magnet exciting coil; Described magnet exciting coil is installed in the side that arc control device are parallel to arc control device grid sheet; Described Y type increases the magnetic armature (iron) and is close to the installation of arc control device side wall of outer shell, increases to be symmetrically arranged with between the magnetic armature (iron) in the Y type and runs the arc road, and the below of running the arc road is provided with moving contact and fixed contact.
Described arc control device grid sheet is that V-type is arranged, and the arc control device grid sheet that V-type is arranged is low near middle fluting, and length is long; Near the fluting height on both sides, length is short.
Be installed on an iron core in the middle of the described magnet exciting coil, magnet exciting coil is connected to the external dc excitation by ampere wires.
Based on the arc blow-out method of the little arc current magnetic blow-out of described middle straightening stream circuit breaker device, arc control device grid sheet is that V-type is arranged, and middle fluting near dynamic/static contact grid sheet is low, and the fluting on close both sides uprises gradually.Because the material of grid sheet is iron, and electric arc is had sucking action.This fluting and aligning method can at utmost utilize ferromagnetic material to the sucking action of electric arc, are conducive to make little arc current to enter the grid sheet as early as possible.
In the process of drop-out current, after the circuit breaker dynamic/static contact separates, the arc current value between contact will be measured and judge to little current detecting judgement control assembling system; As if reaching or being lower than little current setting value, little current detecting judges that the control assembling system can send signal, makes the magnet exciting coil energising, therefore can produce magnetic flux with increasing in the magnetic armature (iron) at iron-core coil; Be fixed in iron core both sides in the magnet exciting coil abreast because two Y types increase the magnetic armature (iron), and clamp iron core; And two increase space between the magnetic armature (iron) corresponding to contact of breaker and the zone of running the arc road, thus contact of breaker and run the magnetic field in the zone in arc road can be because increasing the magnetic armature (iron) to the local obviously reinforcement of the guiding of magnetic circuit; Therefore when cut-offfing little arc current, electric arc is subjected to pointing to the big electric power of grid sheet direction in this magnetic field, the transverse movement under the effect of this power of little arc current, and enter the grid sheet rapidly and cut and cool off, electric arc is extinguished fast.
The present invention adopts V-type arc control device grid sheet, installs in the arc control device shell side parallel with the grid sheet to add magnet exciting coil, and the external little current detecting of magnet exciting coil is judged system.Corresponding dynamic/static contact and the zone of running the arc road are respectively installed a slice Y type respectively and are increased the magnetic armature (iron) on arc control device shell both sides.This device can effectively strengthen contact and run the magnetic field in zone, arc road, enters the grid sheet fast for the little arc current that makes voltage contact area, and finally successfully cut-offs electric arc, and reducing probability of equipment failure has remarkable effect.In addition, this apparatus structure compactness, utilization rationally can be optimized the circuit breaker space layout, reduces its volume.
Description of drawings
Fig. 1 is the little arc current magnetic blow-out of a kind of middle straightening stream circuit breaker device stereogram;
Fig. 2 is the little arc current magnetic blow-out of a kind of middle straightening stream circuit breaker device three-dimensional exploded view;
Fig. 3 is the little arc current magnetic blow-out of a kind of middle straightening stream circuit breaker device front view;
Fig. 4 is the little arc current magnetic blow-out of a kind of middle straightening stream circuit breaker device cutaway view;
Wherein: 1 is arc control device grid sheets; 2 is magnet exciting coil; 3 is iron core; 4 increase the magnetic armature (iron) for the Y type; 5 for running the arc road; 6 is moving contact; 7 is fixed contact.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Referring to accompanying drawing, this little arc current magnetic blow-out device that applies in the dc circuit breaker comprises that little current detecting judges system, and magnet exciting coil increases the magnetic armature (iron), dc circuit breaker arc control device grid sheet, moving contact, fixed contact, race arc road etc.Wherein arc control device grid sheet is that V-type is arranged, and middle fluting near dynamic/static contact grid sheet is low, and the fluting on close both sides uprises gradually.Because the material of grid sheet is iron, and electric arc is had sucking action.This fluting and aligning method can at utmost utilize ferromagnetic material to the sucking action of electric arc, are conducive to make little arc current to enter the grid sheet as early as possible.Magnet exciting coil is installed in the side that arc control device are parallel to the grid sheet.Be installed on an iron core in the middle of the magnet exciting coil, magnet exciting coil is connected to the external dc excitation by ampere wires, and continuous current excitation is controlled by little current detecting judgement control system.The Y type increases the magnetic armature (iron) and is fixed in iron core both sides in the magnet exciting coil abreast, be installed in arc control device vertical with in the both sides of grid sheet corresponding to contact of breaker and the zone of running the arc road, be close to the arc control device side wall of outer shell.
In the process of drop-out current, after the circuit breaker dynamic/static contact separates, the arc current value between contact will be measured and judge to little current detecting judgement control assembling system.As if reaching or being lower than little current setting value, little current detecting judges that the control assembling system can send signal, makes the magnet exciting coil energising, therefore can produce magnetic flux with increasing in the magnetic armature (iron) at iron-core coil.Be fixed in iron core both sides in the magnet exciting coil abreast because two Y types increase the magnetic armature (iron), and clamp iron core.And two increase space between the magnetic armature (iron) corresponding to contact of breaker and the zone of running the arc road, thus contact of breaker and run the magnetic field in the zone in arc road can be because increasing the magnetic armature (iron) to the local obviously reinforcement of the guiding of magnetic circuit.Therefore when cut-offfing little arc current, electric arc is subjected to pointing to the big electric power of grid sheet direction in this magnetic field, the transverse movement under the effect of this power of little arc current, and enter the grid sheet rapidly and cut and cool off, electric arc is extinguished rapidly.
In addition, this apparatus structure compactness, utilization rationally can be optimized the circuit breaker space layout, reduces its spatial volume.
Above content is to further describing that the present invention does in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of submitting to.
Claims (4)
1. the little arc current magnetic blow-out of straightening stream circuit breaker device in a kind is characterized in that:
Comprise arc control device grid sheet, magnet exciting coil, be connected little current detecting on the magnet exciting coil judge that system, the iron core of installing, the Y type that is fixed in the iron core both sides and clamps iron core abreast increase the magnetic armature (iron), run arc road, moving contact and fixed contact in the middle of magnet exciting coil; Described magnet exciting coil is installed in the side that arc control device are parallel to arc control device grid sheet; Described Y type increases the magnetic armature (iron) and is close to the installation of arc control device side wall of outer shell, increases to be symmetrically arranged with between the magnetic armature (iron) in the Y type and runs the arc road, and the below of running the arc road is provided with moving contact and fixed contact.
2. middle straightening flows the little arc current magnetic blow-out of circuit breaker device according to claim 1, it is characterized in that: described arc control device grid sheet is that V-type is arranged, and the arc control device grid sheet that V-type is arranged is low near the fluting of centre, and length is long; Near the fluting height on both sides, length is short.
3. middle straightening flows the little arc current magnetic blow-out of circuit breaker device according to claim 1, it is characterized in that: be installed on an iron core in the middle of the described magnet exciting coil, magnet exciting coil is connected to the external dc excitation by ampere wires.
4. based on the arc blow-out method of claim 1, the little arc current magnetic blow-out of 2 or 3 described middle straightening stream circuit breakers device, it is characterized in that:
Arc control device grid sheet is that V-type is arranged, and middle fluting near dynamic/static contact grid sheet is low, and the fluting on close both sides uprises gradually;
In the process of drop-out current, after the circuit breaker dynamic/static contact separated, little current detecting judged that system will measure and judge the arc current value between contact; As if reaching or being lower than little current setting value, little current detecting judges that system can send signal, makes the magnet exciting coil energising, therefore can and increase in the magnetic armature (iron) at iron-core coil produce magnetic flux; Be fixed in iron core both sides in the magnet exciting coil abreast because two Y types increase the magnetic armature (iron), and clamp iron core; And two increase space between the magnetic armature (iron) corresponding to contact of breaker and the zone of running the arc road, thus contact of breaker and run the magnetic field in the zone in arc road can be because increasing the magnetic armature (iron) to the local obviously reinforcement of the guiding of magnetic circuit; Therefore when cut-offfing little arc current, electric arc is subjected to pointing to the big electric power of grid sheet direction in this magnetic field, the transverse movement under the effect of this power of little arc current, and enter the grid sheet rapidly and cut and cool off, electric arc is extinguished fast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210040952 CN102592908B (en) | 2012-02-22 | 2012-02-22 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210040952 CN102592908B (en) | 2012-02-22 | 2012-02-22 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102592908A CN102592908A (en) | 2012-07-18 |
| CN102592908B true CN102592908B (en) | 2013-09-11 |
Family
ID=46481397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210040952 Expired - Fee Related CN102592908B (en) | 2012-02-22 | 2012-02-22 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102592908B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915894B (en) * | 2012-10-29 | 2015-10-28 | 大全集团有限公司 | Arc-blowing device of direct-current circuit breaker |
| CN103065895B (en) * | 2012-12-18 | 2015-04-29 | 西安交通大学 | Contact and arc extinguishing system for universal type low-voltage circuit breaker |
| CN103794424B (en) * | 2014-03-02 | 2016-05-11 | 西安交通大学 | A kind of dc circuit breaker |
| CN103824736B (en) * | 2014-03-02 | 2016-01-06 | 西安交通大学 | A kind of DC circuit breaker with magnetic-quenching arc-extinguishing device |
| CN109686619B (en) * | 2019-01-29 | 2020-01-14 | 北京航空航天大学 | Bidirectional magnetic field enhanced magnetic blowing device |
| CN112509892A (en) * | 2020-11-13 | 2021-03-16 | 江苏省如高高压电器有限公司 | Magnetic blow-out structure for direct current air circuit breaker |
| CN112820580B (en) * | 2020-12-30 | 2023-01-24 | 河北电力装备有限公司 | Strap type transverse magnetic field direct current transfer device and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86204642U (en) * | 1986-09-17 | 1987-06-24 | 上海立新电器厂 | Direct-current magnetic field circuit breaker |
| ZA896375B (en) * | 1988-09-12 | 1990-05-30 | Westinghouse Electric Corp | Circuit breaker with arc gun |
| CN100517538C (en) * | 2006-12-22 | 2009-07-22 | 西安交通大学 | Current-limiting arc-control device of medium-voltage large current DC circuit breaker |
| CN101556876A (en) * | 2009-05-15 | 2009-10-14 | 刘天保 | Electronic electromagnetic intelligent switch |
-
2012
- 2012-02-22 CN CN 201210040952 patent/CN102592908B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102592908A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102592908B (en) | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker | |
| RU2562123C2 (en) | Electromechanical circuit breaker | |
| RU2396627C2 (en) | Electromechanical circuit breaker and current breaking method | |
| US10176945B2 (en) | DC electrical circuit breaker | |
| CN103824736B (en) | A kind of DC circuit breaker with magnetic-quenching arc-extinguishing device | |
| CN102592909B (en) | Magnetic blast arc quenching device for DC (direct current) circuit breaker | |
| CN102339691B (en) | Combined magnetic-quenching device | |
| CN105470067A (en) | Breaker provided with arc extinguishing mechanism with magnetic blowing and air-blowing functions | |
| CN101615535B (en) | Permanent magnet opening and closing type DC intelligent circuit breaker | |
| CN102592911B (en) | Medium-pressure direct-current large-current arc extinction system with current limiting and breaking function and limiting method of system | |
| KR20180111161A (en) | Dc circuit breaker having an arc blow-out device | |
| CN102593787B (en) | Low-current disjunction device and disjunction method for direct-current distribution system | |
| CN207587553U (en) | A kind of contact system of switch | |
| WO2023036062A1 (en) | High-voltage direct current (dc) relay capable of enhancing arc extinguishing capability | |
| CN206340492U (en) | A kind of high-voltage DC contactor | |
| CN202067744U (en) | Arc extinguishing equipment of air circuit breaker | |
| CN202159596U (en) | Dual power supply switching device | |
| CN106252164A (en) | A kind of track traffic high-voltage DC contactor | |
| CN211376577U (en) | Direct-current high-breaking magnetic blow-out quick circuit breaker | |
| CN2397597Y (en) | Static contact device for AC contactor | |
| CN205092171U (en) | Middling pressure direct current contactor permanent magnetism arc control device | |
| CN108389742A (en) | Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability | |
| CN202339883U (en) | Disc type gyromagnetic vacuum arc extinguish chamber | |
| CN203312185U (en) | Electromagnetic type alternating current contactor | |
| CN109659208A (en) | A kind of circuit breaker arc striking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ZHEN'AN POWER EQUIPMENTS CO., LTD. Effective date: 20140708 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140708 Address after: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Patentee after: Xi'an Jiaotong University Patentee after: Jiangsu Zhen'an Power Equipments Co., Ltd. Address before: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Patentee before: Xi'an Jiaotong University |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20210222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |