CN202183347U - Magnetic flux converter - Google Patents
Magnetic flux converter Download PDFInfo
- Publication number
- CN202183347U CN202183347U CN2011202355236U CN201120235523U CN202183347U CN 202183347 U CN202183347 U CN 202183347U CN 2011202355236 U CN2011202355236 U CN 2011202355236U CN 201120235523 U CN201120235523 U CN 201120235523U CN 202183347 U CN202183347 U CN 202183347U
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- China
- Prior art keywords
- iron core
- yoke
- spring
- moving iron
- solenoid
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- Expired - Lifetime
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Abstract
A magnetic flux converter belongs to the field of a releasing device of a low-voltage breaker. The magnetic flux converter comprises a first magnet yoke, a second magnet yoke, a permanent magnet, a static iron core, a moving iron core, a solenoid and a spring. The second magnet yoke is fixed with the first magnet yoke. The permanent magnet, the static iron core and the solenoid are arranged in the cavity of the first magnet yoke. One end of the moving iron core is disposed in the central cavity of the solenoid and corresponds to the static iron core. The other end of the moving iron core stretches outside the second magnet yoke via the central through hole of the second magnet yoke. The magnetic flux converter is characterized in that the end of the moving iron core, which stretches outside the second magnet yoke, is provided with a matching screw thread; the matching screw thread is provided with a spring force adjusting device; the spring is sleeved on the end of the moving iron core, which stretches outside the second magnet yoke; and one end of the spring is abutted against the second magnet yoke, and the other end of the spring is abutted against the spring force adjusting device. The advantage of the utility model is that the spring force of the spring is adjusted through the spring force adjusting device, so that tripping energy is guaranteed, and motion stability and reliability of the moving iron core are ensured.
Description
Technical field
The utility model belongs to the trip gear technical field of low-voltage circuit breaker, is specifically related to a kind of magnetic flow convertor
Background technology
magnetic flow convertor is the final controlling element of electronic type (also claiming intelligent) breaker of plastic casing; Mainly comprise permanent magnet, solenoid, moving iron core and spring; When normal condition, moving iron core remains in the attracted position under the suction of permanent magnet.When such as overload or short circuit condition generation, instrument transformer can be sent to electronic trip unit with the current signal of overload or short circuit, subsequently; The CPU of electronic trip unit sends electronic pulse signal to magnetic flow convertor, makes the solenoid energising, and in yoke, produces the opposite magnetic flux of magnetic flux that produces with permanent magnet; Thereby greatly reduce the suction-combining force of permanent magnet to moving iron core, at this moment, because the elastic force of spring is greater than the suction of permanent magnet to moving iron core; Thereby moving iron core is released; Outwards eject, and drive the actuator of the breaker of plastic casing that is positioned at the magnetic flow convertor below, circuit is broken off.
still; In actual production process owing to receive the influence of production technology; Magnetic flow convertor is after riveted joint is installed, and often there is certain difference in the air gap in the main magnetic circuit of same batch magnetic flow convertor, that is to say that the air gap in the main magnetic circuit of each magnetic flow convertor can not show desirable consistency; Because the influence of the factors such as leakage flux of air gap; The part magnetic flow convertor is when passing to normal operating voltage, because of the tripping operation energy shortage can't influence the performance of circuit breaker function at the back open circuit in time of solenoid energising.In addition, the peripheral yoke of magnetic flow convertor adopts riveted joint usually, thereby can't dismantle, so certainly will after assembling is accomplished, be scrapped by some magnetic flow convertor, not only causes the wasting of resources, and causes manufacturing cost to increase.
are in disclosed Chinese patent document; Can be seen in the technical scheme of magnetic flow convertor in a large number; Slightly with give an example like CN200993943Y (magnetic flow convertor of intelligent electrical apparatus release), CN201060822Y (the breaker of plastic casing magnetic flow convertor that has multi-functional push pedal), CN101877294A (adjustable flux transfer trip) and CN101702391A (magnetic flow convertor), or the like.Above-mentioned patent that is not limited to be given an example and patent application scheme all are to be designed to built-inly with being placed on spring on the moving iron core, thereby all can't regulate and guarantee the reliable and stable of moving iron core action the active force of spring.
In view of above-mentioned prior art, still have necessity of improvement, to this, the applicant has done actively and good try, below the technical scheme that will introduce under this prerequisite, produce
Summary of the invention
The task of
the utility model is to provide a kind of helping that spring is implemented adjusting and used the reliable and stable magnetic flow convertor of action that guarantee is tripped energy and guaranteed moving iron core.
The task of
the utility model is accomplished like this; A kind of magnetic flow convertor; Comprise first, second yoke, permanent magnet, static iron core, moving iron core, solenoid and spring, second yoke and first yoke fix, and permanent magnet, static iron core and solenoid are arranged in the cavity volume of first yoke; One end of moving iron core is placed in the center cavity of solenoid; Corresponding with said static iron core, and the other end of moving iron core is stretched over outside second yoke through the center through hole of second yoke, is characterized in: said moving iron core is stretched over the outer end of said second yoke and is provided with and connects screw thread; Be equipped with one on the screw thread and be used for spring force adjusting device that the spring force of said spring is regulated connecting; Described spring housing is located at moving iron core and is stretched over the outer end of second yoke, and an end of this spring is kept out on second yoke, and the other end is kept out on the spring force adjusting device.
The described moving iron core of
the utility model is stretched over the outer end of said second yoke and constitutes a narrow portion of contracting, and the described screw thread that connects is arranged on the outer wall of this narrow portion of contracting.
The described spring force adjusting device of
the utility model comprises a clamp and the nut that is used for clamp is limited, clamp and nut and the said threads engaged that connects, and described spring contacts with clamp.
Offer a groove on the end face of the described narrow portion's end that contracts of
the utility model.
described groove of the utility model is the in-line groove.
described solenoid of the utility model is arranged on the coil rack.
The technical scheme that
the utility model provides will be owing to will move iron core and be stretched over outer narrow the contracting of an end of second yoke a narrow portion of contracting is arranged; One spring force adjusting device is provided in the narrow portion of contracting; And spring is nested with in the narrow portion of contracting; Through the adjusting of spring force adjusting device being adjusted the spring force of spring, ensure the tripping operation energy and guarantee that the action of moving iron core is stable and reliable.
Description of drawings
Fig. 1 is the example structure figure of the utility model.
Embodiment
can be expressly understood the technical spirit and the beneficial effect of the utility model more for the auditor that the makes Patent Office especially public; The applicant general elaborates with the mode of embodiment below; But the description to embodiment all is not the restriction to the utility model scheme, any according to the utility model design done only for pro forma but not substantial equivalent transformation all should be regarded as the technical scheme category of the utility model.
Fig. 1 is asked for an interview in
; The magnetic flow convertor that provides comprises first, second yoke 1,6, permanent magnet 2, static iron core 3, moving iron core 4, solenoid 5 and spring 7; The vertical sectional shape of first yoke 1 takes the shape of the letter U, and second yoke 6 is fixed through the mode of riveting dress and the accent position of first yoke 1.Permanent magnet 2, static iron core 3 and solenoid 5 are arranged in the cavity volume of first yoke 1; One end of moving iron core 4 is that the upper end of location status shown in Figure 1 is placed in the center cavity of solenoid 5; Corresponding with aforesaid static iron core 3, and the other end of moving iron core 4 to be the center through hole of lower end second yoke 6 shown in Figure 1 be stretched over outside second yoke 6, shown in scheming; Spring 7 be nested with moving iron core 4 be stretched over the end outside second yoke 6, show as external.
Fig. 1 is continued to see in
, and aforesaid solenoid 5 has a coil rack 51, and solenoid 5 windings are on coil rack 51, and an end of aforesaid moving iron core 4 is inserted in the skeleton chamber of coil rack 51.
The main points of the technical scheme that
provide as the utility model; Moving iron core 4 is stretched over the narrow narrow portion 41 of contracting that constitutes of contracting of an end outside second yoke 6; Establishing connects screw thread 411 on the outer wall of the narrow portion 41 of contracting; Connecting the supporting spring force adjusting device 8 of establishing on the screw thread 411, an end bearing (keeping out) of aforesaid spring 7 is on second yoke 6, and other end supporting (keeping out) is on spring force adjusting device 8.On the distal end faces of the aforesaid narrow portion 41 of contracting, offer the groove 412 of an in-line again.
preferably but not the spring force adjusting device 8 that definitely is limited to comprises a clamp 81 and a nut 82, this clamp 81 and nut 82 all with connect screw thread 411 and revolve and join, and aforesaid spring 7 contacts with clamp 81.
When normal operation of circuit breaker, solenoid 5 is not switched on
, thereby does not generate magnetic field yet, because the elastic force of spring 7 is less than the suction of permanent magnet 2, so moving iron core 4 is held by permanent magnet 2.When circuit breaker overload or short circuit generation; After electronic trip unit is received the current signal of overload that instrument transformer sends or short circuit; CPU through electronic trip unit sends an electronic pulse signal to magnetic flow convertor again again; Thereby it is electric that solenoid 5 is got, and in yoke, produce an opposite magnetic flux of magnetic flux that produces with permanent magnet, thereby greatly reduce the suction of permanent magnet to moving iron core.At this moment, because the elastic force of spring 7 greater than the suction of 2 pairs of moving iron cores 4 of permanent magnet, obtains discharging so move iron core 4, outwards eject, and drive the actuator's open circuit below the magnetic flow convertor.
During
debugging magnetic flow convertor, can criticize fixing moving iron core 4, regulate clamp 81 and moving iron core 4 end thread relative positions through a word spiral shell; Regulate the reduction length that changes spring 7, thereby change the size of spring force, and then make the magnetic flow convertor action; And the pushing executing mechanism (not shown), make circuit breaker tripping, after adjusting is accomplished; Use nut 82 and clamp 81 and tight again; Prevent clamp 81 from being vibrated and become flexible, cause spring force to change, thereby guaranteed the stability of magnetic flow convertor action.
In sum, the utility model is regulated adjusting device 8 and moving iron core 4 end thread relative positions through spring force, and regulating reaction spring is the decrement of spring 7; Further reach the function of regulating spring power, make the magnetic flow convertor action, and then make circuit breaker tripping; Simultaneously owing to adopted double nut and the locking structure of nut 82 with clamp 81; Prevent clamp 81 from being vibrated and produced looseningly, and then caused spring force to change, guaranteed the stability of magnetic flow convertor action
Claims (6)
1. magnetic flow convertor; Comprise first, second yoke (1,6), permanent magnet (2), static iron core (3), moving iron core (4), solenoid (5) and spring (7); Second yoke (6) fixes with first yoke (1); Permanent magnet (2), static iron core (3) and solenoid (5) are arranged in the cavity volume of first yoke (1), and an end of moving iron core (4) is placed in the center cavity of solenoid (5), and is corresponding with said static iron core (3); And the other end of moving iron core (4) is stretched over outside second yoke (6) through the center through hole of second yoke (6); It is characterized in that: said moving iron core (4) is stretched over the outer end of said second yoke (6) and is provided with and connects screw thread (411), is equipped with one on the screw thread (411) and is used for spring force adjusting device (8) that the spring force of said spring (7) is regulated connecting, and described spring (7) is set in moving iron core (4) and is stretched over the outer end of second yoke (6); One end of this spring (7) is kept out on second yoke (6), and the other end is kept out on spring force adjusting device (8).
2. magnetic flow convertor according to claim 1 is characterized in that: said moving iron core (4) is stretched over the outer end of said second yoke (6) and constitutes a narrow portion of contracting (41), and the described screw thread (411) that connects is arranged on the outer wall of this narrow portion of contracting (41).
3. magnetic flow convertor according to claim 1; It is characterized in that the nut (82) that described spring force adjusting device (8) comprises a clamp (81) and is used for clamp (81) is limited; Clamp (81) and nut (82) match with the said screw thread (611) that connects, and described spring (7) contacts with clamp (81).
4. magnetic flow convertor according to claim 2 is characterized in that offering a groove (412) on the terminal end face of the described narrow portion of contracting (41).
5. magnetic flow convertor according to claim 4 is characterized in that described groove (412) is the in-line groove.
6. magnetic flow convertor according to claim 1 is characterized in that described solenoid (5) is arranged on the coil rack (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202355236U CN202183347U (en) | 2011-07-06 | 2011-07-06 | Magnetic flux converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202355236U CN202183347U (en) | 2011-07-06 | 2011-07-06 | Magnetic flux converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202183347U true CN202183347U (en) | 2012-04-04 |
Family
ID=46176375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202355236U Expired - Lifetime CN202183347U (en) | 2011-07-06 | 2011-07-06 | Magnetic flux converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202183347U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337424A (en) * | 2013-06-19 | 2013-10-02 | 邳州市国龙电器有限公司 | Permanent magnet tripping device |
| CN103560057A (en) * | 2013-10-15 | 2014-02-05 | 国家电网公司 | Monostable permanent magnetic mechanism |
| CN104103462A (en) * | 2013-04-07 | 2014-10-15 | 深圳市金博联电力技术有限公司 | Permanent-magnet mechanism capable of adjusting closing-opening time and adjusting method |
| CN104576244A (en) * | 2013-10-22 | 2015-04-29 | 西门子公司 | Electromagnetic release |
| CN106252021A (en) * | 2016-09-27 | 2016-12-21 | 宁波兴茂电子科技有限公司 | A kind of adjustable release electromagnet |
| CN107622926A (en) * | 2017-10-19 | 2018-01-23 | 武汉倍诺德开关股份有限公司 | A kind of electronic type molded case circuit breaker electromagnetic system |
| CN107785217A (en) * | 2017-10-19 | 2018-03-09 | 武汉倍诺德开关股份有限公司 | A kind of Intelligent electronic optical pole breaker of plastic casing |
-
2011
- 2011-07-06 CN CN2011202355236U patent/CN202183347U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103462A (en) * | 2013-04-07 | 2014-10-15 | 深圳市金博联电力技术有限公司 | Permanent-magnet mechanism capable of adjusting closing-opening time and adjusting method |
| CN103337424A (en) * | 2013-06-19 | 2013-10-02 | 邳州市国龙电器有限公司 | Permanent magnet tripping device |
| CN103337424B (en) * | 2013-06-19 | 2016-01-20 | 邳州市国龙电器有限公司 | A kind of permanent magnet releaser |
| CN103560057A (en) * | 2013-10-15 | 2014-02-05 | 国家电网公司 | Monostable permanent magnetic mechanism |
| CN103560057B (en) * | 2013-10-15 | 2016-06-08 | 国家电网公司 | A kind of Monostable permanent magnetic mechanism |
| CN104576244A (en) * | 2013-10-22 | 2015-04-29 | 西门子公司 | Electromagnetic release |
| CN104576244B (en) * | 2013-10-22 | 2017-08-11 | 西门子公司 | Magnetictrip |
| CN106252021A (en) * | 2016-09-27 | 2016-12-21 | 宁波兴茂电子科技有限公司 | A kind of adjustable release electromagnet |
| CN107622926A (en) * | 2017-10-19 | 2018-01-23 | 武汉倍诺德开关股份有限公司 | A kind of electronic type molded case circuit breaker electromagnetic system |
| CN107785217A (en) * | 2017-10-19 | 2018-03-09 | 武汉倍诺德开关股份有限公司 | A kind of Intelligent electronic optical pole breaker of plastic casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120404 |
|
| CX01 | Expiry of patent term |