CN201616396U - Permanent-magnet switching-on/off DC intelligent breaker - Google Patents
Permanent-magnet switching-on/off DC intelligent breaker Download PDFInfo
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- CN201616396U CN201616396U CN2009201902905U CN200920190290U CN201616396U CN 201616396 U CN201616396 U CN 201616396U CN 2009201902905 U CN2009201902905 U CN 2009201902905U CN 200920190290 U CN200920190290 U CN 200920190290U CN 201616396 U CN201616396 U CN 201616396U
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- moving contact
- arc
- fixed contact
- supporter
- spring
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Abstract
The utility model discloses a permanent-magnet switching-on/off DC intelligent breaker which comprises a base horizontally arranged, wherein a moving contact, a moving contact supporting piece and a wire input terminal electrically connected with the moving contact supporting piece are arranged at the middle end of the base; a fixed contact, a fixed contact supporting piece and a wire outlet busbar electrically connected with the fixed contact supporting piece are arranged at the right end of the base; an arc extinction mechanism is arranged above the moving contact and the fixed contact and comprises an arc extinction cover and an arc strike corner; a permanent-magnet electromagnetic motion mechanism and an insulating transmission rod are arranged at the left end of the base and provided with a motion rod capable of conducting linear and reciprocating motion in the horizontal direction; and one end of the insulating transmission rod is fixedly connected with the tail end of the motion rod, and the other end thereof is rotatably connected with the moving contact supporting piece. The motion rod conducts linear and reciprocating motion to drive the moving supporting piece and the moving contact to conduct reciprocating motion within a certain angle, so as to achieve switching-on/off operation. The intelligent breaker has the advantages of simplified structure, high switching-off speed, and stable and reliable performance.
Description
Technical field
The utility model belongs to the dc switch technical field, is specifically related to a kind of DC intelligent circuit breaker with short circuit and overload protection function.
Background technology
Dc circuit breaker, China is mainly used on the industrial-mineral electric locomotive, and direct current machine is made short circuit or overload protection usefulness.Existing direct current quick breaker, though this version of general employing dc solenidal operation electriomagnet transmission is more simple in structure than direct current machine, air operated machine operation, but its operating current is bigger, the electromagnet size is also bigger, for this reason, must strengthen diameter of wire, strengthen the electromagnet size, thereby make whole circuit breaker volume become big.Because the electromagnet size strengthens caused self overheated and impulsive force, is difficult to satisfy the frequent operation requirement of electric locomotive.
Patent documentation CN2105761U discloses a kind of electric locomotive direct current quick breaker, form by arc quenching system, frame, operating mechanism, contact and overcurrent release system, it is characterized in that with a single-acting cylinder or double-acting cylinder transmission operating mechanism, and pass through the closure of linkage operating breaker contact.Can clearly observe from its Figure of description 1, the structure of its linkage is very complicated, and parts are more, break down easily, are difficult to move reliably and with long-term.
The utility model content
The purpose of this utility model provides a kind of designs simplification, breaking speed permanent magnet opening and closing type DC intelligent circuit breaker fast, stable and reliable for performance.
The technical scheme that realizes the utility model purpose is: a kind of permanent magnet opening and closing type DC intelligent circuit breaker, comprise horizontally disposed pedestal, the outlet busbar that the input terminal that described pedestal middle-end is provided with moving contact, moving contact supporter and is electrically connected with the moving contact supporter, described pedestal right-hand member are provided with fixed contact, fixed contact supporter and are electrically connected with the fixed contact supporter; The top of described moving contact and fixed contact is provided with arc-extinguishing mechanism, and described arc-extinguishing mechanism comprises arc-extinguish chamber and arc leading angle; Described pedestal left end is provided with permanent-magnet electromagnetic actuating mechanism and insulating driving rod; But described permanent-magnet electromagnetic actuating mechanism is provided with the actuating strut that along continuous straight runs is done linear reciprocating motion; One end of described insulating driving rod is fixedlyed connected with the terminal of actuating strut, and the other end and described moving contact supporter are rotationally connected; Described actuating strut drives described moving contact supporter and moving contact back and forth rotation in the certain angle scope by insulating driving rod, thereby realizes breaking-closing operating when doing linear reciprocating motion.
In the technique scheme, also comprise support arm and back-moving spring; The top of described moving contact supporter is fixed with moving contact, and the middle part is provided with the spring-loaded portion of protrusion; Described moving contact supporter is rotationally connected by the upper end of rotating shaft and support arm and the end of insulating driving rod; The bottom and the pedestal of described support arm are rotationally connected; One end of described back-moving spring is against on the support arm, and the other end is against in the spring-loaded portion of described moving contact supporter.
In the technique scheme, described spring is a compression spring.
In the technique scheme, also comprise an intelligent electronic controller and a DC current sensor that is used for electric current is carried out real time sample that is set in the described outlet.
In the technique scheme, described DC current sensor is a Hall current sensor; Described intelligent electronic controller compares the current value and the predetermined current value of real time sample, and sends the corresponding signal of telecommunication to the permanent-magnet electromagnetic actuating mechanism under the situation of short circuit and overload, and control permanent-magnet electromagnetic actuating mechanism is made the divide-shut brake action.
In the technique scheme, described arc-extinguish chamber is the arc shaped arc-extinguish chamber, is arranged on the top of moving contact and fixed contact.
In the technique scheme, the both sides of described fixed contact also respectively are provided with an aerogenesis plate that adopts ambroin to make.
In the technique scheme, described aerogenesis plate adopts nylon-polyethylene alloy or nylon-polypropylene alloy to make.
The utlity model has positive effect: in (1) the utility model, described pedestal left end is provided with permanent-magnet electromagnetic actuating mechanism and insulating driving rod; But described permanent-magnet electromagnetic actuating mechanism is provided with the actuating strut that along continuous straight runs is done linear reciprocating motion; One end of described insulating driving rod is fixedlyed connected with the terminal of actuating strut, and the other end and described moving contact supporter are rotationally connected; Described actuating strut drives described moving contact supporter and moving contact back and forth rotation in the certain angle scope by insulating driving rod, thereby realizes breaking-closing operating when doing linear reciprocating motion.The utility model is compared with the disclosed electric locomotive direct current quick breaker of patent documentation CN2105761U, and structure is comparatively simplified, and parts are less, has reduced the possibility that mechanical breakdown takes place, can reliability service steady in a long-term.
(2) in the utility model, also comprise support arm and back-moving spring; The top of described moving contact supporter is fixed with moving contact, and the middle part is provided with the spring-loaded portion of protrusion; Described moving contact supporter is rotationally connected by the upper end of rotating shaft and support arm and the end of insulating driving rod; The bottom and the pedestal of described support arm are rotationally connected; One end of described back-moving spring is against on the support arm, and the other end is against in the spring-loaded portion of described moving contact supporter.The spring of reseting elasticity is provided, and the moving contact supporter of unique texture in the cooperation makes the utility model when divide-shut brake, has good cushioning effect, avoids excessively making dynamic/static contact impaired because of the dynamic/static contact bump; In addition, behind combined floodgate, described spring has the effect of exerting pressure, and it promotes the moving contact supporter makes it exert pressure to moving contact towards the direction that compresses fixed contact, thereby realizes the firm combination between the dynamic/static contact, during long-term the use, have more good effect, because dynamic/static contact in long-term breaking-closing operating, has certain wearing and tearing, and the pressure that this spring provides can be offset the unfavorable factor that this wearing and tearing bring, and can effectively guarantee the electric contact performance of dynamic/static contact between the two.
(3) in the utility model, also comprise an intelligent electronic controller and a DC current sensor that is used for electric current is carried out real time sample that is set in the outlet.Utilize this intelligent electronic controller and DC current sensor can effectively realize intellectualized operation.Utilize intelligent electronic controller and magneto motor-operating mechanism, can make closing operating time less than 0.05 millisecond, the sub-switching operation time is reduced to 0.02 millisecond.
(4) in the utility model, the both sides of described fixed contact also respectively are provided with an aerogenesis plate that adopts ambroin to make.When the dynamic/static contact separating brake produced electric arc, the high temperature of electric arc can improve the air pressure of electric arc below so that the aerogenesis plate produces gas, under the anticyclonic effect of this burst, the arcing between the dynamic/static contact was blown fast disconnected, effectively reduced arc length, was beneficial to blow-out; Under anticyclonic effect, electric arc is blown into blow-out in the arc-extinguish chamber simultaneously, thereby improves arc quenching effect.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Be labeled as shown in the accompanying drawing: pedestal 1, moving contact 2, moving contact supporter 21, spring-loaded portion 211, input terminal 22, fixed contact 31, fixed contact supporter 32, outlet busbar 33, arc-extinguishing mechanism 4, arc-extinguish chamber 41, arc leading angle 42, permanent-magnet electromagnetic actuating mechanism 5, actuating strut 51, insulating driving rod 6, support arm 7, spring 8, DC current sensor 9, aerogenesis plate 100, intelligent electronic controller 200.
Embodiment
(embodiment 1)
Fig. 1 is a kind of structural representation of the present utility model, has shown a kind of embodiment of the present utility model.
Present embodiment is a kind of permanent magnet opening and closing type DC intelligent circuit breaker, comprises horizontally disposed pedestal 1, and described pedestal 1 middle-end is provided with moving contact 2, moving contact supporter 21, the input terminal 22 that is electrically connected with moving contact supporter 21, support arm 7 and back-moving spring 8; The outlet busbar 33 that described pedestal 1 right-hand member is provided with fixed contact 31, fixed contact supporter 32 and is electrically connected with fixed contact supporter 32; The top of described moving contact 2 and fixed contact 31 is provided with arc-extinguishing mechanism 4, and described arc-extinguishing mechanism comprises arc-extinguish chamber 41 and arc leading angle 42; Described arc-extinguish chamber 41 is arc shaped arc-extinguish chambers 41, is arranged on the top of moving contact 2 and fixed contact 31.
Described pedestal 1 left end is provided with permanent-magnet electromagnetic actuating mechanism 5 and insulating driving rod 6; But described permanent-magnet electromagnetic actuating mechanism 5 is provided with the actuating strut 51 that along continuous straight runs is done linear reciprocating motion; One end of described insulating driving rod 6 is fixedlyed connected with the terminal of actuating strut 51, and the other end and described moving contact supporter 21 are rotationally connected.
The top of described moving contact supporter 21 is fixed with moving contact 2, and the middle part is provided with the spring-loaded portion 211 of protrusion; Described moving contact supporter 21 is rotationally connected by the upper end of rotating shaft and support arm 7 and the end of insulating driving rod 6; The bottom of described support arm 7 and pedestal 1 are rotationally connected; One end of described back-moving spring is against on the support arm 7, and the other end is against in the spring-loaded portion 211 of described moving contact supporter 21.
Described actuating strut 51 drives described moving contact supporter 21 and moving contact 2 back and forth rotation in the certain angle scope by insulating driving rod 6, thereby realizes breaking-closing operating when doing linear reciprocating motion.
Described spring is a compression spring.
In the present embodiment, also comprise an intelligent electronic controller 200 and a DC current sensor 9 that is used for electric current is carried out real time sample that is set on the described inlet wire.Described DC current sensor 9 is selected Hall current sensor for use.
Described intelligent electronic controller compares the current value and the predetermined current value of real time sample, and sends the corresponding signal of telecommunication to permanent-magnet electromagnetic actuating mechanism 5 under the situation of overcurrent and overload, and control permanent-magnet electromagnetic actuating mechanism 5 is made the divide-shut brake action.
The both sides of described fixed contact 31 also respectively are provided with an aerogenesis plate 100 that adopts ambroin to make.Described aerogenesis plate 100 adopts nylon-polyethylene alloy or nylon-polypropylene alloy to make.Select employing nylon-polypropylene alloy in the present embodiment for use.The aerogenesis plate that nylon-polyethylene alloy or nylon-polypropylene alloy are made is compared with the aerogenesis plate 100 that adopts common ambroin to make, and under identical arcing, can produce more gas, can improve arc quenching effect.
Present embodiment is mainly used under the high-voltage great-current operational environment, and its operating voltage is 1500V, and rated operational current can transfer to 400A to 1000A; Intelligent electronic controller matches with high performance Hall current sensor, can be when the work operation, running current is close to real-time tracking and monitoring, its rated operational current maximum can also be selected in 400A to 1000A scope and choose simultaneously, after in case circuital current exceeds preset value, or after short circuit and the overload, intelligent electronic controller can provide sub-gate signal rapidly in the time in 0.012 millisecond.
In addition, silver tungsten moving contact 2 in the present embodiment, fixed contact 31 adopt special material and process to be prepared from, specifically be select for use the high metal of fusing point for example silver strip make the skeleton of porous body, again that fusing point is lower silver tungsten powder be placed on above the porous body skeleton or below, be warming up to below the skeleton fusing point, more than the silver tungsten fusing point, because silver tungsten powder smelting, the porous body skeleton does not melt, silver tungsten after dissolving is filled in the hole of porous body skeleton, thus the dense product that forms.Its advantage is that the contact of making (also claiming the contact) has good electrical conductivity and workability, both had the high-melting-point, high rigidity, anti-arc erosion, anti-melting welding of tungsten, the characteristics that material transfer is few, its maximum characteristics are exactly strong to the ability to bear of large-current electric arc, are not prone to bad phenomenon such as fusing, degree shape, be full of cracks, bubbling.
Present embodiment has positive effect: in (1) present embodiment, described pedestal left end is provided with permanent-magnet electromagnetic actuating mechanism (5) and insulating driving rod; But described permanent-magnet electromagnetic actuating mechanism is provided with the actuating strut that along continuous straight runs is done linear reciprocating motion; One end of described insulating driving rod is fixedlyed connected with the terminal of actuating strut, and the other end and described moving contact supporter are rotationally connected; Described actuating strut drives described moving contact supporter and moving contact back and forth rotation in the certain angle scope by insulating driving rod, thereby realizes breaking-closing operating when doing linear reciprocating motion.Present embodiment is compared with the disclosed electric locomotive direct current quick breaker of patent documentation CN2105761U, and structure is comparatively simplified, and parts are less, has reduced the possibility that mechanical breakdown takes place, can reliability service steady in a long-term.
(2) in the present embodiment, also comprise support arm and back-moving spring; The top of described moving contact supporter is fixed with moving contact, and the middle part is provided with the spring-loaded portion of protrusion; Described moving contact supporter is rotationally connected by the upper end of rotating shaft and support arm and the end of insulating driving rod; The bottom and the pedestal of described support arm are rotationally connected; One end of described back-moving spring is against on the support arm, and the other end is against in the spring-loaded portion of described moving contact supporter.The spring of reseting elasticity is provided, and the moving contact supporter of unique texture in the cooperation makes present embodiment when divide-shut brake, has good cushioning effect, avoids excessively making dynamic/static contact impaired because of the dynamic/static contact bump; In addition, behind combined floodgate, described spring has the effect of exerting pressure, and it promotes the moving contact supporter makes it exert pressure to moving contact towards the direction that compresses fixed contact, thereby realizes the firm combination between the dynamic/static contact, during long-term the use, have more good effect, because dynamic/static contact in long-term breaking-closing operating, has certain wearing and tearing, and the pressure that this spring provides can be offset the unfavorable factor that this wearing and tearing bring, and can effectively guarantee the electric contact performance of dynamic/static contact between the two.
(3) in the present embodiment, also comprise an intelligent electronic controller and a DC current sensor that is used for electric current is carried out real time sample that is set in the outlet.Utilize this intelligent electronic controller and DC current sensor can effectively realize intellectualized operation.Utilize intelligent electronic controller and magneto motor-operating mechanism, can make closing operating time less than 0.05 millisecond, the sub-switching operation time is reduced to 0.02 millisecond.
(4) in the present embodiment, the both sides of described fixed contact also respectively are provided with an aerogenesis plate that adopts ambroin to make.When the dynamic/static contact separating brake produced electric arc, the high temperature of electric arc can improve the air pressure of electric arc below so that the aerogenesis plate produces gas, under the anticyclonic effect of this burst, the arcing between the dynamic/static contact was blown fast disconnected, effectively reduced arc length, was beneficial to blow-out; Under anticyclonic effect, electric arc is blown into blow-out in the arc-extinguish chamber simultaneously, thereby improves arc quenching effect.
Obviously, the foregoing description of the present utility model only is for the utility model example clearly is described, and is not to be qualification to execution mode of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that connotation of the present utility model extends out and still belong to protection range of the present utility model.
Claims (7)
1. permanent magnet opening and closing type DC intelligent circuit breaker, comprise horizontally disposed pedestal (1), the outlet busbar (33) that the input terminal (22) that described pedestal (1) middle-end is provided with moving contact (2), moving contact supporter (21) and is electrically connected with moving contact supporter (21), described pedestal (1) right-hand member are provided with fixed contact (31), fixed contact supporter (32) and are electrically connected with fixed contact supporter (32); The top of described moving contact (2) and fixed contact (31) is provided with arc-extinguishing mechanism (4), and described arc-extinguishing mechanism comprises arc-extinguish chamber (41) and arc leading angle (42); It is characterized in that:
Described pedestal (1) left end is provided with permanent-magnet electromagnetic actuating mechanism (5) and insulating driving rod (6); Described permanent-magnet electromagnetic actuating mechanism (5) but be provided with along continuous straight runs and do the actuating strut of linear reciprocating motion (51); One end of described insulating driving rod (6) is fixedlyed connected with the terminal of actuating strut (51), and the other end and described moving contact supporter (21) are rotationally connected;
Described actuating strut (51) drives described moving contact supporter (21) and moving contact (2) back and forth rotation in the certain angle scope by insulating driving rod (6), thereby realizes breaking-closing operating when doing linear reciprocating motion.
2. permanent magnet opening and closing type DC intelligent circuit breaker according to claim 1 is characterized in that: also comprise support arm (7) and back-moving spring (8); The top of described moving contact supporter (21) is fixed with moving contact (2), and the middle part is provided with the spring-loaded portion (211) of protrusion; Described moving contact supporter (21) is rotationally connected by the upper end of rotating shaft and support arm (7) and the end of insulating driving rod (6); The bottom of described support arm (7) and pedestal (1) are rotationally connected; One end of described back-moving spring is against on the support arm (7), and the other end is against in the spring-loaded portion (211) of described moving contact supporter (21).
3. permanent magnet opening and closing type DC intelligent circuit breaker according to claim 2 is characterized in that: described spring is a compression spring.
4. permanent magnet opening and closing type DC intelligent circuit breaker according to claim 1 is characterized in that: also comprise an intelligent electronic controller and a DC current sensor (9) that is used for electric current is carried out real time sample that is set in the described outlet.
5. permanent magnet opening and closing type DC intelligent circuit breaker according to claim 4 is characterized in that: described DC current sensor (9) is a Hall current sensor.
6. permanent magnet opening and closing type DC intelligent circuit breaker according to claim 1 is characterized in that: described arc-extinguish chamber (41) is arc shaped arc-extinguish chamber (41), is arranged on the top of moving contact (2) and fixed contact (31).
7. permanent magnet opening and closing type DC intelligent circuit breaker according to claim 1 is characterized in that: the both sides of described fixed contact (31) also respectively are provided with an aerogenesis plate (100) that adopts ambroin to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201902905U CN201616396U (en) | 2009-08-06 | 2009-08-06 | Permanent-magnet switching-on/off DC intelligent breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201902905U CN201616396U (en) | 2009-08-06 | 2009-08-06 | Permanent-magnet switching-on/off DC intelligent breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616396U true CN201616396U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201902905U Expired - Lifetime CN201616396U (en) | 2009-08-06 | 2009-08-06 | Permanent-magnet switching-on/off DC intelligent breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615534B (en) * | 2009-08-06 | 2013-08-28 | 乐清市牵引机电厂 | Permanent magnet opening and closing type DC intelligent circuit breaker |
-
2009
- 2009-08-06 CN CN2009201902905U patent/CN201616396U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101615534B (en) * | 2009-08-06 | 2013-08-28 | 乐清市牵引机电厂 | Permanent magnet opening and closing type DC intelligent circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101027 Effective date of abandoning: 20090806 |
|
| RGAV | Abandon patent right to avoid regrant |