CN105513916B - Deferred action mechanism and breaker in breaker - Google Patents
Deferred action mechanism and breaker in breaker Download PDFInfo
- Publication number
- CN105513916B CN105513916B CN201610040783.5A CN201610040783A CN105513916B CN 105513916 B CN105513916 B CN 105513916B CN 201610040783 A CN201610040783 A CN 201610040783A CN 105513916 B CN105513916 B CN 105513916B
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- Prior art keywords
- iron core
- dynamic iron
- breaker
- action mechanism
- mandril
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
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Abstract
Disclose a kind of deferred action mechanism and breaker in breaker.The deferred action mechanism includes：Static iron core；At least two dynamic iron cores are in static iron core on same level axis；At least two reaction springs, respectively between static iron core and dynamic iron core adjacent thereto and between at least two dynamic iron cores；Electromagnetic coil is looped around on the outside of at least one of static iron core and at least two dynamic iron cores；Mandril, it is set through static iron core and at least two dynamic iron cores, when the solenoid is activated, the magnetomotive that loop current in electromagnetic coil generates drives at least two dynamic iron cores that the resistance that the spring force of at least two reaction springs generates is overcome to be moved towards the direction of static iron core so as to which mandril be driven to move, and at least one of wherein at least two reaction spring reaction spring is different from the spring force that other reaction springs generate.The present invention can realize the selective protection of Graded coordination, be acted simultaneously with subordinate breaker when avoiding the occurrence of short circuit current.
Description
Technical field
The present invention relates to circuit field more particularly to a kind of deferred action mechanisms and breaker in breaker.
Background technology
Breaker in Terminal Power Distribution System mainly for the protection of conducting wire or the purposes of equipment, i.e., when in Terminal Power Distribution System
During middle failure electric current, breaker can cut off the fault current in time, to prevent that the accident of the fault current is caused to spread.Mesh
Before, user generally sets circuit breaker multiple levels to protect.General miniature circuit breaker only overloads long delay and short-circuit instantaneous protection two
Kind protection feature, when drop-away value of the failed shorted electric current that load-side occurs more than subordinate's breaker, also above higher level's breaker
Drop-away value when, if higher level's breaker does not have short circuit short time-delay defencive function, will appear higher level's breaker and subordinate open circuit
Device trips or bypasses the immediate leadership the feelings of tripping (that is, higher level's breaker has tripped in the case that subordinate's breaker not yet trips) simultaneously
Condition powers off healthy circuit, and fault coverage is caused to expand, and in turn results in unnecessary, bigger economic loss.If higher level
Breaker has short circuit short time-delay defencive function, then can avoid the occurrence of higher level's breaker and subordinate's breaker trips or bypasses the immediate leadership simultaneously
The situation of tripping occurs, so as to the reliability and security for preventing the expansion of accident, improving power supply.
Now, user generally uses the miniature circuit breaker (SMCB) with selective protection as higher level's breaker to realize choosing
Selecting property protect, however whether electronic type or mechanically SMCB all there are volume it is big, of high cost the shortcomings that.
Invention content
In view of above-described one or more problem, the present invention provides a kind of novel delays in breaker
Actuating mechanism and breaker.
The deferred action mechanism being used in breaker according to embodiments of the present invention includes：Static iron core；At least two dynamic iron
Core is in static iron core on same level axis；At least two reaction springs, respectively positioned at static iron core and dynamic iron adjacent thereto
Between core and between at least two dynamic iron cores；Electromagnetic coil is looped around in static iron core and at least two dynamic iron cores extremely
The outside of few one；Mandril is set through static iron core and at least two dynamic iron cores, wherein when the solenoid is activated, electromagnetism
The magnetomotive that loop current in coil generates drives at least two dynamic iron cores that the spring force of at least two reaction springs is overcome to produce
Raw resistance is moved towards the direction of static iron core, so as to which mandril be driven to move, in wherein at least two reaction spring at least
One reaction spring is different from the spring force that other reaction springs generate.
The deferred action mechanism being used in breaker according to embodiments of the present invention further includes：Casing, wherein at least two
Dynamic iron core and at least two reaction springs are located in casing, and electromagnetic coil is looped around the outside of casing, wherein, the set
Pipe is made of the material with insulating capacity.
In the according to embodiments of the present invention deferred action mechanism for being used in breaker, at least two dynamic iron cores include the
One dynamic iron core and the second dynamic iron core, the first dynamic iron core between static iron core and the second dynamic iron core, and the first dynamic iron core with it is quiet
The spring force of the first reaction spring between iron core is less than the second reaction spring between the first dynamic iron core and the second dynamic iron core
Spring force.
In the deferred action mechanism being used in breaker according to embodiments of the present invention, when the first dynamic iron core is in electromagnetic wire
When moving to extreme position in the direction towards static iron core under the magnetomotive driving that the loop current in circle generates, mandril is not
Reach target location.
In the deferred action mechanism being used in breaker according to embodiments of the present invention, when the first dynamic iron core is in electromagnetic wire
When moving to extreme position in the direction towards static iron core under the magnetomotive driving that the loop current in circle generates, the second dynamic iron
Continue to move under the magnetomotive driving that loop current of the core in inertia and/or electromagnetic coil generates, until mandril reaches mesh
Until cursor position.
In the according to embodiments of the present invention deferred action mechanism for being used in breaker, in the second dynamic iron core towards quiet
During the direction movement of iron core, the increase rate of resistance that the spring force of the second reaction spring generates is more than in electromagnetic coil
Loop current generate magnetomotive increase rate.
In the deferred action mechanism being used in breaker according to embodiments of the present invention, when the circuit electricity in electromagnetic coil
Stream is more than when adjusting action current threshold values, and mandril reaches the target location.
In the deferred action mechanism being used in breaker according to embodiments of the present invention, having in the first dynamic iron core might as well
The second dynamic iron core is hindered to continue slot or the hole of movement.
Breaker according to embodiments of the present invention, including deferred action mechanism as described above.
The deferred action mechanism being used in breaker according to embodiments of the present invention, it is simple in structure, it is at low cost, and can
The selective protection of Graded coordination is realized by the deferred action of tripping mechanism, so as to avoid the occurrence of short circuit current when breaks with subordinate
Road device acts simultaneously.
Description of the drawings
The drawings below of the application is used to understand the application in this as the part of the application.The implementation shown in attached drawing
Mode and its description principle used to explain the present invention.In the accompanying drawings：
Fig. 1 is the partial sectional view of the deferred action mechanism being used in breaker according to embodiments of the present invention；And
Fig. 2 is the partial enlarged view of the deferred action mechanism being used in breaker according to embodiments of the present invention.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below.In following detailed description
In, it is proposed that many details, in order to provide complete understanding of the present invention.But to those skilled in the art
It will be apparent that the present invention can be implemented in the case of some details in not needing to these details.Below to implementing
The description of example is used for the purpose of by showing that the example of the present invention is better understood from the present invention to provide.The present invention never limits
In any concrete configuration set forth below, but element and component are covered under the premise of without departing from the spirit of the present invention
Any modification is replaced and is improved.In the the accompanying drawings and the following description, well known structure and technology is not shown, to avoid pair
The present invention causes unnecessary fuzzy.
In order to avoid occur the superior and the subordinate's breaker trip or bypass the immediate leadership simultaneously tripping situation so as to prevent the expansion of accident, break
Road device should have the function of short circuit time delay tripping to realize the selective protection of Graded coordination.For this purpose, the present invention proposes one kind newly
The deferred action mechanism being used in breaker of grain husk.With reference to Fig. 1 and Fig. 2, use according to embodiments of the present invention is described in detail
Deferred action mechanism in breaker.
Fig. 1 shows the deferred action mechanism being used in breaker according to embodiments of the present invention.As shown in Figure 1, the use
Deferred action mechanism 100 in breaker includes electromagnetic coil 101,102, two dynamic iron cores of static iron core 103 and 104, two
Reaction spring 105 and 106 and the mandril 107 set through static iron core 102 and two dynamic iron cores 103,104.
In the present embodiment, electromagnetic coil 101 can be solenoid structure form, be looped around static iron core 102 and two
The outside of dynamic iron core 103, at least one of 104；Two dynamic iron cores 103,104 are in same level axis with static iron core 102
On, and dynamic iron core 103 is between static iron core 102 and dynamic iron core 104；Reaction spring 105 is located at static iron core 102 and dynamic iron core
Between 103, and reaction spring 106 is located between dynamic iron core 103 and 104；The spring force that reaction spring 105 generates causes dynamic iron
Magnetic gap between core 103 and static iron core 102 is maintained, and the spring force that reaction spring 106 generates causes dynamic iron core 103 and 104
Between magnetic gap be maintained, and reaction spring 105 generate spring force be less than reaction spring 106 generate spring force.
When electromagnetic coil 101 is powered, the magnetomotive that the loop current in electromagnetic coil 101 generates drives two dynamic iron cores
103 and 104 resistances that the spring force of two reaction springs 105 and 106 is overcome to generate are moved towards the direction of static iron core 102,
So as to which mandril 107 be driven to move.
Here, since reaction spring 105 is different with 106 spring force, so：1) when the circuit electricity in electromagnetic coil 101
It flows the driving force for gradually increasing from zero but not yet increasing to its generation and is more than the bullet of any one in reaction spring 105 and 106
During the resistance that spring force generates, two dynamic iron cores 103 and 104 can not move；2) when the loop current in electromagnetic coil 101 increases
The spring force for being less than reaction spring 106 more than the resistance that the spring force of reaction spring 105 generates to the driving force of its generation produces
During raw resistance, moved under the action of the driving force that loop current of the dynamic iron core 103 in electromagnetic coil 101 generates, dynamic iron core
104 move under the drive of dynamic iron core 103, so that mandril 107 moves under the drive of both dynamic iron cores 103 and 104.
It will be appreciated by persons skilled in the art that the deferred action machine being used in breaker according to embodiments of the present invention
Structure can include more than two dynamic iron cores and the more than two reaction springs being equipped with dynamic iron core, and this two with
At least one reaction spring is different from the spring force that other reaction springs generate in upper reaction spring.In this way, due to electromagnetic wire
The driving force of the loop current generation in 101 is enclosed to the precedence relationship in the driving existence time of more than two dynamic iron cores, so
The delay of mandril 107 can be caused to reach target location.
In the embodiment shown in Figure 2, when the magnetomotive that loop current of the dynamic iron core 103 in electromagnetic coil 101 generates
Driving under extreme position is moved in the direction towards static iron core 102 (for example, reaction spring 105 cannot be further compressed
Extreme position or dynamic iron core 103 by static iron core 102 withstand so as to can not continue towards the direction of static iron core 102 move
Extreme position) when, mandril 107 does not reach target location；When loop current production of the dynamic iron core 103 in electromagnetic coil 101
When moving to extreme position in the direction towards static iron core 102 under raw magnetomotive driving, dynamic iron core 104 is in inertia, electromagnetism
Continue to move under the action of magnetomotive or both of which that loop current in coil 101 generates, until driving mandril 107
Arrival target location (such as so that the position that de- mouth mechanism 109 acts) until.In dynamic iron core 104 towards static iron core 102
During direction moves, the increase rate of resistance that the spring force of reaction spring 106 generates is more than returning in electromagnetic coil 101
The magnetomotive increase rate that road electric current generates, the acceleration for allowing for dynamic iron core 104 in this way is negative value, so as to delay to move
The movement speed of iron core 104.
In the breaker including deferred action mechanism 100, there is only dynamic iron already existing in existing breaker
Magnetic gap between core 103 and static iron core 102, and there are in existing breaker there is no dynamic iron core 103 and dynamic iron core 104
Between magnetic gap, therefore increase the move distance of mandril 107 compared to existing breaker, delay the action of tripping mechanism 109,
So that the fault current in breaker is being cut off after certain time-delay.In the present embodiment, when returning in electromagnetic coil 101
Road electric current is more than when adjusting action current threshold value, mandril 107 reach target location (that is, reach make the action of tripping mechanism 109 so as to
So that the position that the fault current in breaker is cut off).
In the embodiment shown in Figure 2, the deferred action mechanism 100 in breaker can also include casing 108,
In, casing 108 is made of the material with insulating capacity.Specifically, dynamic iron core 103 and 104 and two reaction springs
105 and 106 are located in casing 108, and electromagnetic coil 101 is looped around on the outer surface of casing 108.Here, casing 108 is not only
Play the role of making insulating, while dynamic iron core 103 and dynamic iron can also be avoided between dynamic iron core 103 and 104 and electromagnetic coil 101
Core 104 radial direction swing it is excessive so as to improve be used in breaker in deferred action mechanism 100 reliability.
The deferred action mechanism that is used in breaker according to embodiments of the present invention with application in order to better understand, below
Further the deferred action mechanism 100 being used in breaker shown in Fig. 1 is described in detail with reference to Fig. 2.
Fig. 2 shows the partial enlarged views of the deferred action mechanism 100 being used in breaker according to embodiments of the present invention.
As shown in Fig. 2, the outer diameter of reaction spring 105 is more smaller than the internal diameter size of casing 108, internal diameter size is than static iron core 102
The outer diameter of boss 111 and the boss of dynamic iron core 103 112 is bigger, between static iron core 102 and dynamic iron core 103 and both ends
It is sleeved on the boss 111 of static iron core 102 and the boss 112 of dynamic iron core 103；Vestibule 113 and vestibule 114 are equipped in dynamic iron core 103；
Mandril 107 is step axis shape, and the outer diameter of the thick axis 115 of mandril 107 is than the internal diameter size of the vestibule 114 of dynamic iron core 103
It is big and smaller than the internal diameter of the vestibule 116 of static iron core 102；Vestibule 117 is equipped in dynamic iron core 104；Reaction spring 106 is sleeved on mandril
On 107 thin axis 118, the thin axis 118 of mandril 107 passes through the vestibule 113,114 of dynamic iron core 103 and stretches into the hole of dynamic iron core 104
Chamber 117；Limit features 119 are equipped on circuit breaker base, dynamic iron core 104 are made to have determining position, by adjusting reaction spring
105th, 106 so that the gap between the gap of static iron core 102 and dynamic iron core 103, dynamic iron core 103 and dynamic iron core 104 have it is determining
Predetermined value.
The magnetomotive that loop current in electromagnetic coil 101 generates is in the resistance of the spring force generation more than reaction spring 105
Cause dynamic iron core 103 that the resistance that the spring force of reaction spring 105 generates is overcome to be moved to the direction close to static iron core 102 during power,
And dynamic iron core 104 is moved with dynamic iron core 103 to the direction close to static iron core 102 together；When dynamic iron core 103 reaches the limit of position,
Tripping mechanism does not act, and has enough magnetic gaps between dynamic iron core 103 and dynamic iron core 104.
When mandril 107, which is not driven, moves to trip positions, the spring force of reaction spring 106 gives dynamic iron core 104
The magnetomotive increase rate that loop current in the increase speed ratio electromagnetic coil 101 of resistance generates is bigger so that dynamic iron core
104 acceleration is negative value, delays the movement speed of dynamic iron core 104, dynamic iron core 104 in inertia and electromagnetic coil 101 after
The resistance for the spring force of reaction spring 106 being overcome to generate under the magnetomotive collective effect that continuous increased loop current generates continues
Movement acts tripping mechanism, so as to fulfill the function of mechanism delayed releasing after mandril 107 is driven to reach trip positions.
In conclusion what is provided according to embodiments of the present invention it can be seen from Fig. 1 and Fig. 2 is used in prolonging in breaker
When actuating mechanism, can realize the Graded coordination selective protection function in the range of certain short-circuit current, avoid non-faulting
Down circuitry so as to avoid unnecessary economic loss, improves the reliability and security of power supply.
The present invention is described by reference to specific embodiments of the present invention above, but those skilled in the art are equal
Solution, these specific embodiments can be carry out various modifications, combine and changed, without departing from by appended claims or its etc.
The spirit and scope of the present invention that jljl limits.In addition, any signal arrows in attached drawing should be to be considered merely as illustrative,
Rather than it is restricted, unless otherwise specific instruction.When the ability that term is also contemplated as making separately or in combination is not known, component
Or the combination of step also will be considered as to have described.
Claims (10)
1. a kind of deferred action mechanism in breaker, including：
Static iron core, including vestibule；
At least two dynamic iron cores are in the static iron core on same level axis, and at least two dynamic iron core includes first
Dynamic iron core and the second dynamic iron core, first dynamic iron core is between the static iron core and second dynamic iron core, and described first
The first vestibule and the second vestibule are equipped in dynamic iron core, vestibule is equipped in second dynamic iron core；
At least two reaction springs, respectively between the static iron core and dynamic iron core adjacent thereto and described at least two
Between a dynamic iron core；
Electromagnetic coil is looped around the outside of at least one of the static iron core and at least two dynamic iron core；
Mandril is set through the static iron core and at least two dynamic iron core, and the mandril is step axis shape, described
The outer diameter of the thick axis of mandril is bigger and smaller than the internal diameter of the vestibule of the static iron core than the internal diameter of first vestibule of the first dynamic iron core,
The thin axis of the mandril passes through the first vestibule of first dynamic iron core and the second vestibule and the hole for stretching into second dynamic iron core
Chamber, the reaction spring between first dynamic iron core and second dynamic iron core are sleeved on the thin axis of the mandril and stretch into
Second vestibule of first dynamic iron core；Wherein,
When the electromagnetic coil is powered, the magnetomotive that the loop current in the electromagnetic coil generates drives described at least two
Dynamic iron core overcomes the resistance that the spring force of at least two reaction spring generates to be moved towards the direction of the static iron core, from
And the mandril is driven to move, wherein at least one of described at least two reaction spring reaction spring and other reaction springs
The spring force of generation is different.
2. the deferred action mechanism in breaker as described in claim 1, which is characterized in that further include：
Casing, wherein at least two dynamic iron core and at least two reaction spring are located in described sleeve pipe, and institute
State the outside that electromagnetic coil is looped around described sleeve pipe.
3. the deferred action mechanism in breaker as claimed in claim 2, which is characterized in that described sleeve pipe is by having
Made of the material of insulating capacity.
4. the deferred action mechanism in breaker as claimed any one in claims 1 to 3, which is characterized in that described
The spring force of the first reaction spring between first dynamic iron core and the static iron core is less than first dynamic iron core and described second
The spring force of the second reaction spring between dynamic iron core.
5. the deferred action mechanism in breaker as claimed in claim 4, which is characterized in that when first dynamic iron core
Under the magnetomotive driving that loop current in the electromagnetic coil generates pole is being moved to towards the direction of the static iron core
During extreme position, the mandril does not reach target location.
6. the deferred action mechanism in breaker as claimed in claim 5, which is characterized in that when first dynamic iron core
Under the magnetomotive driving that loop current in the electromagnetic coil generates pole is being moved to towards the direction of the static iron core
During extreme position, the magnetomotive driving of loop current generation of second dynamic iron core in inertia and/or the electromagnetic coil
Under continue to move, until the mandril reach the target location until.
7. the deferred action mechanism in breaker as claimed in claim 6, which is characterized in that in second dynamic iron core
During being moved towards the direction of the static iron core, the increase of resistance that the spring force of second reaction spring generates is fast
Rate is more than the magnetomotive increase rate that the loop current in the electromagnetic coil generates.
8. the deferred action mechanism in breaker as claimed in claim 6, which is characterized in that when in the electromagnetic coil
Loop current be more than when adjusting action current threshold values, the mandril reaches the target location.
9. the deferred action mechanism in breaker as claimed in claim 4, which is characterized in that in first dynamic iron core
With slot or the hole that second dynamic iron core is not interfered to continue movement.
10. a kind of breaker, including the deferred action mechanism described in any one of claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040783.5A CN105513916B (en) | 2016-01-21 | 2016-01-21 | Deferred action mechanism and breaker in breaker |
| PCT/CN2016/104531 WO2017124814A1 (en) | 2016-01-21 | 2016-11-04 | Time-delay operation mechanism used in circuit breaker, and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040783.5A CN105513916B (en) | 2016-01-21 | 2016-01-21 | Deferred action mechanism and breaker in breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105513916A CN105513916A (en) | 2016-04-20 |
| CN105513916B true CN105513916B (en) | 2018-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610040783.5A Active CN105513916B (en) | 2016-01-21 | 2016-01-21 | Deferred action mechanism and breaker in breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105513916B (en) |
| WO (1) | WO2017124814A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513916B (en) * | 2016-01-21 | 2018-06-29 | 首瑞（天津）电气设备有限公司 | Deferred action mechanism and breaker in breaker |
| CN106952794B (en) * | 2017-05-16 | 2019-03-22 | 厦门大恒科技有限公司 | Time delay mechanism and circuit breaker |
| CN108231501B (en) * | 2018-01-12 | 2024-02-27 | 厦门大恒科技有限公司 | Hydraulic movable iron core electromagnet and circuit breaker |
| CN109087833A (en) * | 2018-08-31 | 2018-12-25 | 宁波耀华电气科技有限责任公司 | A kind of Monostable permanent magnetism operating mechanism |
| CN110137044B (en) * | 2019-05-30 | 2024-02-02 | 天津加美特电气股份有限公司 | Intelligent circuit breaker with normally open and normally closed functions |
| CN114496602B (en) * | 2022-02-18 | 2024-01-09 | 薛京 | Circuit breaker operating mechanism |
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| US6864450B1 (en) * | 2004-05-19 | 2005-03-08 | Eaton Corporation | Circuit breaker with delay mechanism |
| CN202816834U (en) * | 2012-09-04 | 2013-03-20 | 中国振华集团华联无线电器材厂 | Hydraulic electromagnetic breaker overload time-delay device |
| CN105513916B (en) * | 2016-01-21 | 2018-06-29 | 首瑞（天津）电气设备有限公司 | Deferred action mechanism and breaker in breaker |
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2016
- 2016-01-21 CN CN201610040783.5A patent/CN105513916B/en active Active
- 2016-11-04 WO PCT/CN2016/104531 patent/WO2017124814A1/en active Application Filing
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| EP0813218A2 (en) * | 1996-06-14 | 1997-12-17 | Felten & Guilleaume Austria Ag | Trip device for overload circuit breaker |
| US5831499A (en) * | 1996-12-13 | 1998-11-03 | Schneider Electric Sa | Selective trip unit for a multipole circuit breaker |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017124814A1 (en) | 2017-07-27 |
| CN105513916A (en) | 2016-04-20 |
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