CN201369302Y - Direct-current electromagnetic high-speed breaker - Google Patents
Direct-current electromagnetic high-speed breaker Download PDFInfo
- Publication number
- CN201369302Y CN201369302Y CNU2009200631291U CN200920063129U CN201369302Y CN 201369302 Y CN201369302 Y CN 201369302Y CN U2009200631291 U CNU2009200631291 U CN U2009200631291U CN 200920063129 U CN200920063129 U CN 200920063129U CN 201369302 Y CN201369302 Y CN 201369302Y
- Authority
- CN
- China
- Prior art keywords
- iron core
- arc
- auxiliary contact
- moving
- operating mechanism
- 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
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A direct-current electromagnetic high-speed breaker comprises a main contact mechanism, an electromagnetic operating mechanism, an instant overcurrent releasing device, an arcing shield and an auxiliary contact switching group, wherein the main contact mechanism and the instant overcurrent releasing device are mounted in a main frame; the arcing shield is placed above a breaker body; the electromagnetic operating mechanism and the auxiliary contact switching group are connected and further installed on the outer side of the main frame to jointly form the breaker body; the arcing shield at the upper part and the breaker body at the lower part are connected by a fitting seat at the middle part; an electromagnet of the electromagnetic operating mechanism is a solenoid electromagnet; an electromagnetic actuation coil, a moving iron core and a static iron core are installed in a mould pressing insulating box; counter-force return springs are arranged inside the moving and the static iron cores; and the moving iron core is connected with a pawl through a hinge structure formed by pin shaft link. The utility model has the advantages of simple structure, low consumption of copper materials, small volume, rapid arc extinguishment, high breaking capacity and stable working status.
Description
Technical field
The utility model relates to a kind of direct current magnetic-type high-speed circuit breaker, relates in particular to the direct current magnetic-type high-speed circuit breaker that is used for main-circuit protection in a kind of industrial and mineral electric locomotive, urban track traffic motor vehicle and the railway traction locomotive.
Background technology
High-speed circuit breaker is a kind of high speed current limiting air-break circuit-breaker as a kind of main-circuit protection switch.In detecting circuit after the electric current excessive (short circuit, overload detection etc.), has the extremely short response time, can thread off automatically, disconnect main contact fast, and in the process of open circuit, quick arc extinguishing, therefore, being particularly suitable for the electric equipment in the rolling stock DC line is protected, is most important execute protection electrical equipment in the vehicle electrical drive system; Also can be used as industrial circle silicon flow directing device, the protection of direct current machine and the cascade protection circuit breakers of small-sized DC feeder equipment such as steel rolling, mining.
At present, the dc circuit breaker that is used for trailer system has two types of electric empty formula or electromagnetic breakers, and typical structure is to be made up of driving mechanism (electric empty transmission device or electromagnetism adhesive mechanism), contact unit (main contact group, arcing contact group), current detecting trip gear, arc quenching system (blow-out coil, arc-extinguish chamber), auxiliary contact group and shell etc.The weak point of these circuit breakers is, electric empty formula high-speed circuit breaker is bulky, needs source of the gas and pipe arrangement, and pipeline easily stops up, the difficult maintenance; The current setting of overcurrent release device is set and is adopted helical torsion spring to regulate pressure, unstable working condition under the shock conditions; The required combined floodgate power of traditional DC high speed circuit breaker is big, need expend a large amount of non-ferrous metal copper materials and make blow-out coil; Pottery arc quenching plate cracky; The arc district is big, has a lot of products that secondary arc extinguishing servicing unit also need be set, and is not suitable for overall target requirement more and more higher in the modern railway transportation.
The utility model content
It is a kind of simple in structure that the purpose of this utility model is to provide, and copper material consumption is few, and volume is little, and arc extinction is fast, and breaking capacity is strong, the direct current magnetic-type high-speed circuit breaker of stable working state.
The technical solution of the utility model is: it comprises main contact mechanism, electromagnetic operating mechanism, momentary excess current trip gear, arc-extinguish chamber, auxiliary contact switches set, and described main contact mechanism and momentary excess current trip gear are installed in the main frame; Described arc-extinguish chamber is placed in the breaker body top; The described electromagnetic operating mechanism and the outside that is installed in main frame after the auxiliary contact switches set links to each other again constitute breaker body jointly; Middle mount pad connects the arc-extinguish chamber on top and the breaker body of bottom; The electromagnet of described electromagnetic operating mechanism is a solenoid electromagnet, and electromagnetism pull-in winding, moving iron core, static iron core are installed in the die stamping insulation box, and moving iron core and the built-in counter-force of static iron core are recovered spring, and moving iron core connects with the articulated structure that ratchet adopts pivot pin to be connected.
The line bank that confluxes, kinematic link, main spring, the arc angle of the band radiator that described main contact mechanism generally links to each other with fixed contact by moving contact, fixed contact, with moving contact constitute, and they all are contained in the cavity that the left and right installation frame made by high strength electrical compression molding material forms.
Described momentary excess current trip gear includes insulation crust, the built-in dropout static iron core of shell, thread off moving iron core, dropout lever; The fulcrum of dropout lever tail is installed on the insulation crust with pin, and the middle part is connected with thread off moving iron core and link respectively by pin with front end; The built-in compression spring of adjusting of setting mechanism, the compression spring upper end of adjusting links to each other with link, and the lower end is fixed in and is adjusted on the nut, and setting value is adjusted bolt and is placed setting mechanism bottom; The line bank that confluxes that employing links to each other with moving contact is as through electric current detecting coil.The fault current of two directions all can cause the rapid-releasing action.
Described arc-extinguish chamber be arranged askew upwarp shape grid slice structure, the middle part arc sheet group that the flash barrier that difficult combustion electrician compression molding material makes and the free arc extinguishing metal gate sheet that disappears are formed of serving as reasons, arc sheet group top is provided with top board, the bottom is provided with base plate, and described arc sheet group, top board and base plate are connected into an integral body by screw rod.
Described auxiliary contact switches set is made up of two independent auxiliary contact switches, is contained in the auxiliary contact box of sealing.This auxiliary switch group is connected by the kinematic link of guide rod with described main contact mechanism, realizes interlocked operation.
The utility model is a kind of direct current magnetic-type high-speed circuit breaker, is one pole, nonpolarity, modular structure, owing to saved yoke, magnetic pole and blow-out coil, and simple in structure; Arc-extinguish chamber be arranged askew upwarp shape grid slice structure, in the process of cutting off circuit, produce constant arc voltage, electric arc is cut off into short arc in the inclined-plane of grid sheet moves upward, the arc-chute group without hindrance air draft in four sides in addition makes the cooling rapidly of arc temperature, helps distributing of free gas, extinguish arcs more apace, thus its breaking capacity improved greatly; The current setting of overcurrent release device is set and is adopted compression spring pressure adjustment, stable working state.
The utility model adopts the moulding electrical plastics to make arc sheet, not cracky.Compare with traditional arc-extinguish chamber, weight alleviates greatly, has increased intensity and anti-destructive, has reduced overall dimension;
The utility model overcurrent trip gear is selected simple and reliable compression spring and special-shaped link for use, has increased mechanism stability, guarantees that setting value is unaffected.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is that arc-extinguish chamber each several part embodiment illustrated in fig. 1 is assembled three-dimensional enlarged diagram;
Fig. 3 is the front view of arc-extinguish chamber embodiment illustrated in fig. 1;
Fig. 4 is the flash barrier front view in the arc-extinguish chamber shown in Figure 4;
Fig. 5 is the vertical view of the flash barrier in the arc-extinguish chamber shown in Figure 4;
Fig. 6 is the front view of the free metal grid sheet that disappears in Fig. 4 arc-extinguish chamber;
Fig. 7 is the structural representation of overcurrent release device embodiment illustrated in fig. 1.
Among the figure: 1. arc-extinguish chamber; 2. flash barrier; 3. metal gate sheet; 4. arc angle; 5. fixed contact; 6. moving contact; 7. electromagnetic operating mechanism; 8. moving iron core; 9. electromagnetism pull-in winding; 10. main frame; 11. auxiliary contact switches set; 12. ratchet; 13. depression bar; 14. kinematic link; 15. main spring; 16. momentary excess current trip gear; 17. dropout lever; 18. setting value is adjusted bolt; 19. setting spring; 20. dropout static iron core; The moving iron core 21. thread off; 22. following bus rod row; 23. last bus rod row; 24. mount pad; 25. top board; 26. short board; 27. base plate; 28. link; 29. shell; 30. adjusting nut; 31. counter-force is recovered spring; 32. static iron core
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
With reference to Fig. 1, present embodiment comprises main contact mechanism, electromagnetic operating mechanism 7, momentary excess current trip gear 16, arc-extinguish chamber 1, auxiliary contact switches set 11.Main contact mechanism and momentary excess current trip gear 7 are installed in the main frame 10; Arc-extinguish chamber 1 is placed in the breaker body top; The electromagnetic operating mechanism 7 and the outside that is installed in main frame 10 after auxiliary contact switches set 11 links to each other again constitute breaker body jointly; Middle mount pad 24 connects the arc-extinguish chamber 1 on top and the breaker body of bottom;
Described electromagnetic operating mechanism 7 is selected solenoid electromagnet for use, electromagnetism pull-in winding 9, moving iron core 8, static iron core 32 are installed in the die stamping insulation box, moving iron core 8 and static iron core 32 built-in counter-forces are recovered spring 31, and moving iron core 8 connects with the articulated structure that ratchet 12 adopts pivot pin to be connected.
The following bus rod row 22 of the band radiator that described main contact mechanism comprises moving contact 6, fixed contact 5, link to each other with fixed contact 5 with moving contact 6, go up bus rod row 23, kinematic link 14, main spring 15, arc angle 4, they all are contained in the cavity that the left and right installation frame made by high strength electrical compression molding material forms.
Moving contact 6 by bus rod row 22 rotation toggle partially conductive, does not use soft connection under main spring 15 pressure that connect with kinematic link 14.The oil-free lubrication axle sleeve is adopted at the movable position of each rotating mechanism, exempts to refuel, and makes maintaining convenient more.
The electromagnetism pull-in winding 9 of described electromagnetic operating mechanism 7 gets electric excitation, and moving iron core 8 drives main contact mechanism action closures by ratchet 12, and after 9 outages of electromagnetism pull-in winding, counter-force recovery spring resets iron core 8 and ratchet 12, and moving contact 6 disconnects.Electromagnetic operating mechanism 7 has saved the habitual air pipe arrangement of electric do-nothing operation, does not have and leaks, and is particularly useful for extremely frigid zones and uses.
Described auxiliary contact switches set 11 comprises two independent auxiliary contact switches, one of them is made of a pair of normally opened contact, two pairs of normally-closed contacts, another is made of two pairs of normally opened contacts, a pair of normally-closed contact, all be contained in the auxiliary contact box of sealing, the auxiliary contact switch is connected by the kinematic link 14 of depression bar 13 with described main contact mechanism.
With reference to Fig. 3～Fig. 7, described arc-extinguish chamber 1 comprises top board 25, base plate 27, between top board 25 and base plate 27, flash barrier 2 and metal gate sheet 4 are housed, the 4 relative embeddings of metal gate sheet tiltedly are placed in the flash barrier 2, metal gate sheet 4 is arranged in groups with flash barrier 2 and is formed arc sheet group, and arrangement mode is the oblique arrangement that upwarps; Leave the gap between described arc sheet group and the arc sheet group, the quantity of arc sheet group is determined (be generally 10～40 groups, present embodiment is 18 groups) according to the requirement of arc extinguishing size, the size of generation arc voltage; The metal gate sheet at arc-extinguish chamber top connects by short board 26, and each arc sheet group is connected in series by screw rod, after base plate 27 combinations, is loaded on mount pad 24; Mount pad 24 by bolt on shell 29; Described metal gate sheet 4 is the free metal grid sheet that disappears; Arc-extinguish chamber 1 can integral demounting, so that maintenance repair is safeguarded.Owing to adopt the arc quenching method of the free metal grid sheet that disappears, the arc-extinguish chamber without hindrance air draft in four sides utilizes from the arc blow-out effect, helps distributing of free gas, correspondingly, has increased its arc extinguishing ability.
With reference to Fig. 7, there is insulation crust 29 momentary excess current trip gear 16 both sides of present embodiment, built-in dropout static iron core 20, thread off moving iron core 21, dropout lever 17; The fulcrum of dropout lever 17 afterbodys is installed on the insulation crust 29 with pin, and the middle part is connected with thread off moving iron core 21 and link 28 respectively by pin with front end; The built-in compression spring 19 of adjusting of setting mechanism, compression spring 19 upper ends of adjusting link to each other with link 28, the lower end is fixed in and is adjusted on the nut 30, adjusting nut 30 limits it and can not rotate by fixing pin on it, setting value is adjusted bolt 18 and is placed setting mechanism bottom, and the turn setting value is adjusted bolt 18 can make adjustment nut 30 move up and down.
The operation principle of described overcurrent release device 16 is:
The compression spring 19 of adjusting is given 28 1 thrusts that make progress of link all the time, when needs are regulated setting value, the turn setting value is adjusted bolt 18, by adjusting moving of nut 30, change the pressure of the compression spring 19 of adjusting, decrement is big more, it is big that thrust also becomes, dropout static iron core 20 must pass through corresponding enough big electric current in bus rod row (tripping coil) 22 down, enough electromagnetic attractions have been produced, make the moving iron core 21 of threading off overcome the thrust that the compression spring 19 of adjusting is given dropout lever 17, dropout lever 17 is rotated, thereby adjust the setting value that bolt 28 may command change overcurrent release by rotation.
When overload or short circuit take place in load, the following bus rod 22 that runs through dropout static iron core 20 can flow through fault current, in case during greater than the static setting value of overcurrent release device 16 in the main circuit, dropout static iron core 20 will be threaded off moving iron core 21 suctions down, force dropout lever 17 that ratchet 12 is depressed by force, moving contact 6 separates with fixed contact 5 under the pulling of main spring 15 fast, cuts off main circuit.
When the main contact disjunction, the electric arc that produces between the main contact, because the effect of main circuit current self-field is along the arc control device that move up into arc-extinguish chamber 1 on the arc angle 4, produce long arc and be subjected to the suction of metal gate sheet 3 and drawn in by force in the slit, electric arc is separated into countless short arcs in the process that moves upward by flash barrier 2 cuttings of arc control device, and produces the camber pressure; Electric arc continues oblique movement along flash barrier 2, is disappeared free rapidly and cooling fast, thereby quickens its arc extinguishing.Utilization has been saved blow-out coil and magnetic pole plate from the arc blow-out effect.Electric arc disperses less during disjunction, the arc district is little, so breaking capacity improves greatly.
Claims (4)
1. a direct current magnetic-type high-speed circuit breaker comprises main contact mechanism, electromagnetic operating mechanism, momentary excess current trip gear, arc-extinguish chamber, auxiliary contact switches set, and described main contact mechanism and momentary excess current trip gear are installed in the main frame; Described arc-extinguish chamber is placed in the breaker body top; The described electromagnetic operating mechanism and the outside that is installed in main frame after the auxiliary contact switches set links to each other again constitute breaker body jointly; Middle mount pad connects the arc-extinguish chamber on top and the breaker body of bottom; It is characterized in that, the electromagnet of described electromagnetic operating mechanism is a solenoid electromagnet, electromagnetism pull-in winding, moving iron core, static iron core are installed in the die stamping insulation box, and moving iron core and the built-in counter-force of static iron core are recovered spring, and moving iron core connects with the articulated structure that ratchet adopts pivot pin to be connected.
2. direct current magnetic-type high-speed circuit breaker according to claim 1 is characterized in that described momentary excess current trip gear includes insulation crust, the built-in dropout static iron core of shell, thread off moving iron core, dropout lever; The fulcrum of dropout lever tail is installed on the insulation crust with pin, and the middle part is connected with thread off moving iron core and link respectively by pin with front end; The built-in compression spring of adjusting of setting mechanism, the compression spring upper end of adjusting links to each other with link, and the lower end is fixed in and is adjusted on the nut, and setting value is adjusted bolt and is placed setting mechanism bottom; The line bank that confluxes that employing links to each other with moving contact is as through electric current detecting coil.
3. direct current magnetic-type high-speed circuit breaker according to claim 1 and 2, it is characterized in that, described arc-extinguish chamber be arranged askew upwarp shape grid slice structure, the middle part arc sheet group that the flash barrier that difficult combustion electrician compression molding material makes and the free arc extinguishing metal gate sheet that disappears are formed of serving as reasons, arc sheet group top is provided with top board, the bottom is provided with base plate, and described arc sheet group, top board and base plate are connected into an integral body by screw rod.
4. direct current magnetic-type high-speed circuit breaker according to claim 1 and 2 is characterized in that, described auxiliary contact switches set is made up of two independent auxiliary contact switches, is contained in the auxiliary contact box of sealing; Described auxiliary switch group is connected by the kinematic link of guide rod with main contact mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200631291U CN201369302Y (en) | 2009-02-06 | 2009-02-06 | Direct-current electromagnetic high-speed breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200631291U CN201369302Y (en) | 2009-02-06 | 2009-02-06 | Direct-current electromagnetic high-speed breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369302Y true CN201369302Y (en) | 2009-12-23 |
Family
ID=41488193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200631291U Expired - Fee Related CN201369302Y (en) | 2009-02-06 | 2009-02-06 | Direct-current electromagnetic high-speed breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201369302Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944719A (en) * | 2012-11-16 | 2013-02-27 | 大连丰和日丽电气有限公司 | Passive direct-current voltage transducer |
| CN102947913A (en) * | 2010-04-16 | 2013-02-27 | Abb技术有限公司 | Arc chute for a circuit breaker, circuit breaker and method for assembling an arc chute |
| CN104269824A (en) * | 2014-09-19 | 2015-01-07 | 国家电网公司 | Fault judgment method and backup protection method for medium-voltage side dead zone in main transformer |
| CN104681371A (en) * | 2015-02-02 | 2015-06-03 | 大全集团有限公司 | Variable rotating shaft contact structure for direct current circuit breaker |
-
2009
- 2009-02-06 CN CNU2009200631291U patent/CN201369302Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947913A (en) * | 2010-04-16 | 2013-02-27 | Abb技术有限公司 | Arc chute for a circuit breaker, circuit breaker and method for assembling an arc chute |
| CN102947913B (en) * | 2010-04-16 | 2015-11-25 | Abb技术有限公司 | The arc-extinguish chamber of circuit breaker, circuit breaker and the method for assembling arc-extinguish chamber |
| CN102944719A (en) * | 2012-11-16 | 2013-02-27 | 大连丰和日丽电气有限公司 | Passive direct-current voltage transducer |
| CN104269824A (en) * | 2014-09-19 | 2015-01-07 | 国家电网公司 | Fault judgment method and backup protection method for medium-voltage side dead zone in main transformer |
| CN104681371A (en) * | 2015-02-02 | 2015-06-03 | 大全集团有限公司 | Variable rotating shaft contact structure for direct current circuit breaker |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201369302Y (en) | Direct-current electromagnetic high-speed breaker | |
| CN201655694U (en) | Contact system with short circuit protection function | |
| CN201163591Y (en) | Moving-type high-pressure AC vacuum contactor, fusible cut-out composite set | |
| CN107393779B (en) | AC/DC universal circuit breaker with strong arc extinguishing effect | |
| CN207338256U (en) | A kind of high-voltage DC contactor | |
| CN107342198A (en) | A kind of breaker of plastic casing with powerful disjunction short circuit current ability | |
| CN111627778A (en) | Magnetic blow-out mechanism of circuit breaker | |
| CN207303018U (en) | A kind of omnipotent breaker | |
| CN212676174U (en) | Novel direct-current high-speed circuit breaker | |
| CN101170031B (en) | Quick break low voltage circuit breaker | |
| CN107527773B (en) | Universal circuit breaker with arc extinguishing performance | |
| CN100435253C (en) | A high-speed double-break magnetic blowing middle-pressure great electric current direct current current-limiting circuit breaker | |
| CN212113610U (en) | Contact arc-extinguishing device for improving breaking capacity of circuit breaker | |
| CN109427504A (en) | A kind of electromagnetic type anti-rebounding device and the breaker with adjusting opening velocity function | |
| CN111584322B (en) | Direct-current high-breaking magnetic blow-out quick circuit breaker | |
| CN2459750Y (en) | Small sized circuit breaker | |
| CN111863517A (en) | Novel direct-current high-speed circuit breaker | |
| CN203721619U (en) | Intelligent type horizontal wire incoming and outgoing vacuum circuit breaker | |
| CN106252167B (en) | A kind of novel ZW32 breakers inrush control device | |
| CN201466550U (en) | Large-capacity vacuum circuit breaker handcart | |
| CN102592897B (en) | DC (direct current) circuit breaker rapid operating mechanism with current limiting characteristic | |
| CN207303017U (en) | A kind of AC and DC omnipotent breaker with stronger arc quenching effect | |
| CN202110995U (en) | Vacuum disconnector | |
| CN111584323A (en) | Contact arc-extinguishing device for improving breaking capacity of circuit breaker | |
| CN211376577U (en) | Direct-current high-breaking magnetic blow-out quick circuit breaker |
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: 20091223 Termination date: 20170206 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |