CN205122408U - High voltage circuit breaker moves winding formula and becomes air gap permanent magnetism linear electric motor operating mechanism - Google Patents
High voltage circuit breaker moves winding formula and becomes air gap permanent magnetism linear electric motor operating mechanism Download PDFInfo
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- CN205122408U CN205122408U CN201520855252.2U CN201520855252U CN205122408U CN 205122408 U CN205122408 U CN 205122408U CN 201520855252 U CN201520855252 U CN 201520855252U CN 205122408 U CN205122408 U CN 205122408U
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- circuit breaker
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- iron core
- magnetism linear
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Abstract
The utility model discloses a high voltage circuit breaker moves winding formula and becomes air gap permanent magnetism linear electric motor operating mechanism, having solved current high voltage circuit breaker behaviour, to move mechanism motion spare part many, drive mechanism is complicated, mechanism controllability and reliability less than the problem. Middle part including V -arrangement pendulum rod (4) articulates on back shaft (5), the one end of V -arrangement pendulum rod (4) is together articulated with output shaft (3) of permanent magnetism linear electric motor (1), the other end of V -arrangement pendulum rod (4) is together articulated with the lower extreme of transmission linkage (6), the upper end of transmission linkage (6) links together through insulating pitman coupling (7) lower extreme with insulating pull rod (8), the lower extreme that circuit breaker contact spring joint (9) and contact spring (10) are passed through to the upper end of insulating pull rod (8) links together, the upper end of contact spring (10) and moving contact (12) in circuit breaker explosion chamber (11) link together. It closes the reliability of closing the operation to have improved operating mechanism and circuit breaker.
Description
Technical field
The invention belongs to power transmission and transforming equipment technical field, particularly one is applied to primary cut-out and moves winding type change air gap permanent magnet linear electric motor operation mechanism.
Background technology
Permanent-magnetism linear motor is generally used for linear drives environment, structure adopts armature winding to be placed on elementary iron core mostly, permanent magnet is placed on the mode of secondary iron core, due to the rapid circular movement of motor, secondary iron core and the electric machine casing of this laying mode easily produce collision, permanent magnet in secondary iron core can produce demagnetization because of strong collision, thus affects motor rectilinear motion.Therefore, allow armature winding move, the linear electric motors of permanent magnet sleep mode can solve the demagnetization problem of permanent magnet because of collision generation.Air gap between conventional electric motor primary iron core and secondary iron core is definite value, and air gap flux density is also steady state value, and air gap is larger, and magnetic is close then less, and air gap is less, and magnetic is close then larger.The point-to-point speed of motor secondary iron core is relevant with the electromagnetic push of motor, and electromagnetic push is directly proportional to armature winding electric current and air gap flux density.When air gap is constant, the point-to-point speed of motor can be realized controlling by controlling armature winding electric current, and the control of armature winding electric current is realized by controller.When controlling moving contact in high voltage breaker with linear electric motors and carrying out breaking-closing operating, because the requirement of moving contact in high voltage breaker separating brake or closing speed is first slow, then soon, slowly, this just requires to realize Discrete control to armature winding electric current finally.But because primary cut-out separating brake or closing speed require higher, make armature winding electric current reach 200-300 ampere, at this moment current segmenting controls just to be difficult to realize, and also reduces the reliability of armature winding life-span and controller simultaneously.Therefore, the permanent-magnetism linear motor of constant air gap is infeasible in high-voltage circuit-breaker switching on-off operating process, cannot complete primary cut-out separating brake or closing speed requirement.Primary cut-out is extremely important power equipment in electric power system, it runs stability, reliability that quality directly affects whole system, and the operating mechanism of the primary cut-out part that to be it important, it not only will ensure the Reliability of Microprocessor that circuit breaker is long-term, and will meet the requirement of arc quenching characteristic to operating mechanism.Conventional circuit breaker operating mechanism is mainly electromagnetic operating mechanism, spring operating mechanism, pneumatic operating mechanism and hydraulic actuating mechanism, these operating mechanism complex structures, moving component is many, and failure rate is higher, and many at key position, easily cause the problems such as operate miss.Complicated operating mechanism causes the response time of operating mechanism long, dispersed large, and its structure can not meet kinetic characteristic and the operating characteristic of circuit breaker completely, thus cannot meet modern power systems to the intelligentized requirement of breaker operator.
Summary of the invention
The invention provides a kind of primary cut-out and move winding type change air gap permanent magnet linear electric motor operation mechanism, solve existing high-voltage breaker operation mechanism motion parts many, complicated mechanism, the technical problem of mechanism's controllability and poor reliability.
The present invention solves above technical problem by the following technical programs:
A kind of primary cut-out moves winding type and becomes air gap permanent magnet linear electric motor operation mechanism, comprise permanent-magnetism linear motor, electric machine controller, arc-extinguishing chamber of circuit breaker and back shaft, moving contact and fixed contact is provided with in arc-extinguishing chamber of circuit breaker, electric machine controller and permanent-magnetism linear motor are electrically connected, the middle part of V-arrangement fork is hinged on back shaft, one end of V-arrangement fork and the output shaft of permanent-magnetism linear motor hinged, the other end of V-arrangement fork and the lower end of kinematic link hinged, the upper end of kinematic link is linked together by the lower end of insulated tension pole connector and insulated tension pole, the upper end of insulated tension pole is linked together by the lower end of contact of breaker spring joint and touch spring, moving contact in the upper end of touch spring and arc-extinguishing chamber of circuit breaker links together.
On elementary iron core in permanent-magnetism linear motor, the first magnet ring is disposed with along horizontal direction from left to right, second magnet ring and the 3rd magnet ring, the first non-magnetic spacer ring is provided with between the first magnet ring and the second magnet ring, the second non-magnetic spacer ring is provided with between the second magnet ring and the 3rd magnet ring, gap between armature winding in first magnet ring and secondary iron core is 3.5 millimeters, gap between armature winding in second magnet ring and secondary iron core is 0.5 millimeter, gap between armature winding in 3rd magnet ring and secondary iron core is 2 millimeters, the left outside side of elementary iron core is provided with left redundant magnet ring, the right outside side of elementary iron core is provided with right redundant magnet ring, hall position sensor is socketed with at the left end of the output main shaft of permanent-magnetism linear motor.
Primary cut-out proposed by the invention moves winding type and becomes air gap permanent magnet linear electric motor operation mechanism, motion driver part in traditional operating mechanism is reduced to the motor shaft that unique parts rotate, considerably reduce operating mechanism parts, improve the reliability of operating mechanism.Adopt linear electric motors to drive circuit breaker, structure is simple, and speed responsive is fast, and motion process controllability is good.The permanent-magnetism linear motor that the present invention proposes, according to the speed characteristics requirement of primary cut-out, adopts dynamic winding type to become gap structure, permanent-magnetism linear motor is matched with the speed characteristics of primary cut-out on exercise performance.This structure improves the starting electromagnetic push of permanent-magnetism linear motor on the one hand, produces larger acceleration, can realize quick acting and realize rapidly braking; Reduce the mechanical shock to operating mechanism on the other hand, add the mechanical endurance of primary cut-out and operating mechanism.The electromagnetic attraction directly utilizing auxiliary permanent magnet to produce in divide-shut brake position that the present invention proposes maintains divide-shut brake position to make primary cut-out, structure is simple, dependable performance, effectively prevent the closing rebound of circuit breaker, improve the reliability of operating mechanism and circuit breaker pass closing operation.The short speed of run duration due to primary cut-out is fast, collide in motion process for preventing permanent magnet and cause loss of excitation, the present invention proposes dynamic winding type and become air gap permanent magnet structure of the linear motion actuator, be placed on the secondary iron core of movement by winding, permanent magnet is placed on static elementary iron core.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the structural representation of permanent-magnetism linear motor 1 of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail:
A kind of primary cut-out moves winding type and becomes air gap permanent magnet linear electric motor operation mechanism, comprise permanent-magnetism linear motor 1, electric machine controller 2, arc-extinguishing chamber of circuit breaker 11 and back shaft 5, moving contact 12 and fixed contact 13 is provided with in arc-extinguishing chamber of circuit breaker 11, electric machine controller 2 and permanent-magnetism linear motor 1 are electrically connected, it is characterized in that, the middle part of V-arrangement fork 4 is hinged on back shaft 5, one end of V-arrangement fork 4 and the output shaft 3 of permanent-magnetism linear motor 1 hinged, the other end of V-arrangement fork 4 and the lower end of kinematic link 6 hinged, the upper end of kinematic link 6 is linked together by the lower end of insulated tension pole connector 7 with insulated tension pole 8, the upper end of insulated tension pole 8 is linked together by the lower end of contact of breaker spring joint 9 with touch spring 10, moving contact 12 in the upper end of touch spring 10 and arc-extinguishing chamber of circuit breaker 11 links together.
On in permanent-magnetism linear motor 1 elementary unshakable in one's determination 14, the first magnet ring 17, second magnet ring 18 and the 3rd magnet ring 19 is disposed with along horizontal direction from left to right, the first non-magnetic spacer ring 20 is provided with between the first magnet ring 17 and the second magnet ring 18, the gap delta between the armature winding 16 in the second non-magnetic spacer ring 21, first magnet ring 17 and secondary iron core 15 is provided with between the second magnet ring 18 and the 3rd magnet ring 19
1be 3.5 millimeters, the gap delta between the armature winding 16 in the second magnet ring 18 and secondary iron core 15
2be 0.5 millimeter, the gap delta between the armature winding 16 in the 3rd magnet ring 19 and secondary iron core 15
3be 2 millimeters, the left outside side of elementary unshakable in one's determination 14 is provided with left redundant magnet ring 22, the right outside side of elementary unshakable in one's determination 14 is provided with right redundant magnet ring 23; Hall position sensor 24 is socketed with at the left end of the output main shaft of permanent-magnetism linear motor 1.
Elementary unshakable in one's determination 14 and secondary iron core 15 built up by DW470 type silicon steel sheet, the output shaft 3 of motor selects No. 10 steel forgings, and the model of the first magnet ring 17, second magnet ring 18 and the 3rd magnet ring 19 is N38 type Nd-Fe-B permanent magnet.When secondary iron core 15 moves to breaker closing or open position, when being namely displaced to the leftmost side or the rightmost side, utilize magnetic flux shortest path principle, the permanent magnetic attraction produced by left redundant magnet ring 22 and right redundant magnet ring 23 makes secondary iron core 15 be pulled together with elementary unshakable in one's determination 14, ensure that circuit breaker moves within the limits prescribed and realizes in divide-shut brake position keeping.
The first magnet ring 17 in permanent-magnetism linear motor 1 and the gap delta between the armature winding 16 in secondary iron core 15
1be 3.5 millimeters, the gap delta between the armature winding 16 in the second magnet ring 18 and secondary iron core 15
2be 0.5 millimeter, the gap delta between the armature winding 16 in the 3rd magnet ring 19 and secondary iron core 15
3it is 2 millimeters.This change gap structure corresponds to breaker open operation motion process, in the contacting travel stage, in the contacting travel stage, gas length is less, getting gas length in present embodiment is 2 millimeters, make air gap flux density comparatively large, the electromagnetic torque causing drive motors to provide is comparatively large, thus circuit breaker can be made to obtain larger just-off speed; After circuit breaker just divides, 3/4 opened apart from the stage, and gas length is minimum, and be 0.5 millimeter, the electromagnetic torque that under this gas length, drive motors provides is maximum, can reach the fastest average separating brake rotating speed of acquisition to meet the speed characteristics requirement of circuit breaker; Before open position, 1/4 opens distance, and gas length is 3.5 millimeters to the maximum, and motor output torque is reduced, and is conducive to the mechanical shock reduced motor and circuit breaker.Become gap structure and ensure that the speed characteristics of drive motors and circuit breaker match from structure.
Claims (2)
1. a primary cut-out moves winding type change air gap permanent magnet linear electric motor operation mechanism, comprise permanent-magnetism linear motor (1), electric machine controller (2), arc-extinguishing chamber of circuit breaker (11) and back shaft (5), moving contact (12) and fixed contact (13) is provided with in arc-extinguishing chamber of circuit breaker (11), electric machine controller (2) and permanent-magnetism linear motor (1) are electrically connected, it is characterized in that, the middle part of V-arrangement fork (4) is hinged on back shaft (5), one end of V-arrangement fork (4) and the output shaft (3) of permanent-magnetism linear motor (1) hinged, the other end of V-arrangement fork (4) and the lower end of kinematic link (6) hinged, the upper end of kinematic link (6) is linked together by the lower end of insulated tension pole connector (7) with insulated tension pole (8), the upper end of insulated tension pole (8) is linked together by the lower end of contact of breaker spring joint (9) with touch spring (10), moving contact (12) in the upper end of touch spring (10) and arc-extinguishing chamber of circuit breaker (11) links together.
2. a kind of primary cut-out according to claim 1 moves winding type change air gap permanent magnet linear electric motor operation mechanism, it is characterized in that, on elementary iron core (14) in permanent-magnetism linear motor (1), the first magnet ring (17) is disposed with along horizontal direction from left to right, second magnet ring (18) and the 3rd magnet ring (19), the first non-magnetic spacer ring (20) is provided with between the first magnet ring (17) and the second magnet ring (18), the second non-magnetic spacer ring (21) is provided with between the second magnet ring (18) and the 3rd magnet ring (19), gap (δ between armature winding (16) in first magnet ring (17) and secondary iron core (15)
1) be 3.5 millimeters, the gap (δ between the armature winding (16) in the second magnet ring (18) and secondary iron core (15)
2) be 0.5 millimeter, the gap (δ between the armature winding (16) in the 3rd magnet ring (19) and secondary iron core (15)
3) be 2 millimeters, the left outside side of elementary iron core (14) is provided with left redundant magnet ring (22), the right outside side of elementary iron core (14) is provided with right redundant magnet ring (23), hall position sensor (24) is socketed with at the left end of the output main shaft of permanent-magnetism linear motor (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520855252.2U CN205122408U (en) | 2015-10-29 | 2015-10-29 | High voltage circuit breaker moves winding formula and becomes air gap permanent magnetism linear electric motor operating mechanism |
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| CN201520855252.2U CN205122408U (en) | 2015-10-29 | 2015-10-29 | High voltage circuit breaker moves winding formula and becomes air gap permanent magnetism linear electric motor operating mechanism |
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| CN205122408U true CN205122408U (en) | 2016-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244198A (en) * | 2015-10-29 | 2016-01-13 | 国网山西省电力公司电力科学研究院 | High-voltage breaker dynamic winding type variable air gap permanent magnetic linear motor operation mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244198A (en) * | 2015-10-29 | 2016-01-13 | 国网山西省电力公司电力科学研究院 | High-voltage breaker dynamic winding type variable air gap permanent magnetic linear motor operation mechanism |
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