CN203674117U - High voltage breaker permanent magnetic variable air gap limited angle motor operation mechanism - Google Patents
High voltage breaker permanent magnetic variable air gap limited angle motor operation mechanism Download PDFInfo
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- CN203674117U CN203674117U CN201320728486.1U CN201320728486U CN203674117U CN 203674117 U CN203674117 U CN 203674117U CN 201320728486 U CN201320728486 U CN 201320728486U CN 203674117 U CN203674117 U CN 203674117U
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- breaker
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Abstract
The utility model discloses a high voltage breaker permanent magnetic variable air gap limited angle motor operation mechanism belonging to the power transmission and transformation equipment technology field. The operation mechanism is constituted by a driving motor, a motor controller, and a transmission mechanism. The driving motor is used for driving the transmission mechanism directly for the three-phase mechanical linkage of the breaker. The operation mechanism adopts the sectional variable air gap structure, and then the motion performance of the driving motor is cooperated with the motion characteristic of the breaker, and in addition, by adopting the structure, the working efficiency of the driving motor is improved, the mechanical impact of the operation mechanism is reduced, and the mechanical service lifetime of the operation mechanism is prolonged. By adopting the permanent magnetic position-restricted holding device and the dead point bounce prevention position-restricted structure, the motion range of the operation mechanism can be effectively limited according to the motion requirement of the breaker, and in addition, the structure is simple, and the performance is reliable. By adopting the dead point bounce prevention position-restricted structure, the design is reasonable, and the own characteristics of the transmission mechanism can be fully used, and therefore the closing bounce of the breaker can be effectively prevented, and the reliability of the closing operation of the operation mechanism and the breaker can be improved.
Description
Technical field
The utility model belongs to power transmission and transforming equipment technical field, and particularly a kind of primary cut-out permanent magnetism becomes air gap finite angle electric operating mechanism.
Background technology
Primary cut-out is switchgear important in electric power system, has control and protection dual-use function, significant to the safe operation of electric power system.Operating mechanism is relevant to the performance of circuit breaker, directly affects the reliability and stability of circuit breaker work.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, and moving component is many, and controllability and reliability are not good.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, thereby cannot meet modern power systems to the intelligentized requirement of breaker operator.
Summary of the invention
The defect existing for prior art, the purpose of this utility model be solve that conventional high-tension breaker operation mechanism motion parts are many, on the basis of the shortcoming such as complicated mechanism, mechanism's controllability and reliability deficiency, provide a kind of primary cut-out permanent magnetism to become air gap finite angle electric operating mechanism, utilize a finite angle magneto directly to drive circuit breaker action, simplify moving component, improved functional reliability and the motion controllability of operating mechanism.
The technical solution of the utility model is achieved in that a kind of primary cut-out permanent magnetism becomes air gap finite angle electric operating mechanism, mainly formed by drive motors, electric machine controller and transmission mechanism, carry out circuit breaker three phase mechanical linkage by a direct drive transmission device of drive motors, described electric machine controller is connected with drive motors end by shielding conductor;
Described transmission mechanism is a set crank link structure, mainly formed by three driving cranks, each driving crank is mainly made up of transmission main shaft, transmission crank arm, kinematic link and insulated tension pole, the output main shaft of drive motors is connected with rotating spindle by abutted flange dish, three driving cranks are equally spaced and are connected with transmission main shaft key by transmission Abduction arm one end, realize coaxial rotating; Transmission Abduction arm other end connection for transmission connecting rod one end, the kinematic link other end connects one end of insulated tension pole, and the other end of insulated tension pole is connected to arc-extinguishing chamber of circuit breaker through touch spring;
Described drive motors is mainly made up of rotor, armature winding, electric machine main shaft, motor stator, the spacing holding device of permanent magnetism and hall position sensor, the described spacing holding device of rotor, permanent magnetism and hall position sensor are assemblied on electric machine main shaft successively, and are connected with axle key with electric machine main shaft; Armature winding is wound in the peariform slot of motor stator, adopts the arrangement mode of concentrating the whole distance of individual layer; On described rotor, be also provided with permanent magnet, permanent magnet is embedded on rotor successively, between adjacent two permanent magnets, is provided with non-magnetic interval insulant; Between motor stator and permanent magnet, for becoming gap structure, each permanent magnet adopts segmental structure, between motor stator and permanent magnet, has different gas length δ
1, δ
2and δ
3, and have δ
1> δ
3> δ
2, this gap structure makes corresponding to breaker open operation motion process, and in the contacting travel stage, gas length is less, thereby obtains larger just-off speed; After just dividing, 3/4 opened apart from the stage, and gas length minimum, obtains the fastest average separating brake rotating speed, reaches the speed characteristics requirement of circuit breaker; Before open position, 1/4 opens distance, and gas length maximum reduces motor output torque, has reduced motor speed, thereby reduces the mechanical shock to motor and circuit breaker.
The spacing holding device of permanent magnetism is mainly made up of permanent magnetic material, spacing rotor and buting iron, described spacing rotor is connected by flat key with electric machine main shaft, permanent magnetic material is embedded in buting iron, and spacing rotor carries out finite angle motion in the fluting of shelves iron, is undertaken spacing by buting iron.
Between described kinematic link and insulated tension pole, be also connected with insulated tension pole connector, shackle rod and insulated tension pole all with insulated tension pole connector chain connection.
Between described insulated tension pole and touch spring, be also connected with contact of breaker spring connector, described insulated tension pole and touch spring are threaded with contact of breaker spring connector.
Described motor stator is built up by DW470 type silicon steel sheet, and rotor adopts No. 10 forgings to make.
In the time that described spacing rotor forwards separating brake or closing position to, the permanent magnetic attraction that utilizes permanent magnet to produce is pulled together spacing rotor and buting iron, makes circuit breaker realize separating brake at open position and keeps or realize at closing position the maintenance of closing a floodgate; Transmission mechanism is in the time moving to breaker closing position, and transmission mechanism just moves to and exceedes dead-centre position, and dead-centre position and closing position angulation should be less than 3 °, exempts from the resilience of moving contact under the effect of touch spring, realizes effectively spacing.
Described rotor is selected N40 type Nd-Fe-B permanent magnet.
The beneficial effects of the utility model: the primary cut-out permanent magnetism that the utility model proposes becomes air gap finite angle electric operating mechanism, and tool has the following advantages:
(1) the high-pressure vacuum breaker permanent magnetism the utility model proposes becomes air gap finite angle electric operating mechanism to be improved current conventional breaker operation mechanism principle.The motor shaft that motion driver part in traditional operating mechanism is reduced to unique parts rotation, has greatly reduced operating mechanism parts, has improved the reliability of operating mechanism.Adopt motor to drive circuit breaker, speed responsive is fast, and control precision is high, and motion process controllability is good.
(2) the operating mechanism permanent magnet drive motor the utility model proposes, according to the speed characteristics requirement of primary cut-out, adopts segmentation to become gap structure, and drive motors is matched with the kinetic characteristic of circuit breaker on exercise performance.This structure has improved the operating efficiency of drive motors, has reduced the mechanical shock of operating mechanism, has increased the mechanical endurance of operating mechanism.
(3) the spacing holding device of permanent magnetism the utility model proposes and dead point bounce-proof position limiting structure can require effectively to limit according to the motion of circuit breaker the range of movement of operating mechanism, simple in structure, dependable performance.Dead point bounce-proof position limiting structure appropriate design also makes full use of the feature of transmission mechanism self, thereby effectively avoids the closing rebound of circuit breaker, has improved operating mechanism and circuit breaker and close the reliability of closing operation.
Accompanying drawing explanation
Fig. 1 is that the utility model execution mode primary cut-out permanent magnetism becomes air gap finite angle electric operating mechanism overall structure schematic diagram;
Fig. 2 (a) is the structural representation of the utility model execution mode drive motors, is (b) end view of (a);
Fig. 3 is for becoming gap structure schematic diagram between the utility model execution mode motor stator and permanent magnet;
Fig. 4 is the spacing holding device structural representation of the utility model execution mode drive motors permanent magnetism;
Fig. 5 is that the utility model execution mode primary cut-out permanent magnetism becomes air gap finite angle electric operating mechanism dead point bounce-proof position limiting structure schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, execution mode of the present utility model is described in further detail.
Present embodiment is take 126kV vacuum circuit-breaker as example, the requirement according to arc control device to operating mechanism, and the primary cut-out permanent magnetism of employing becomes air gap finite angle electric operating mechanism, as shown in Figure 1.Primary cut-out permanent magnetism becomes air gap finite angle electric operating mechanism and is arranged on circuit breaker limit phase position, mainly by drive motors 1, and electric machine controller 2, transmission mechanism 3 forms, and adopts the direct drive transmission device of a motor 3 to carry out the three phase mechanical linkage of circuit breaker.
Transmission mechanism 3 is a set crank link structure, further comprises: three driving cranks.The structure of each driving crank is all identical, and present embodiment illustrates its structure as an example of a driving crank example: driving crank is mainly made up of transmission main shaft 6, transmission crank arm 5, kinematic link 7 and insulated tension pole 9.
Transmission main shaft 6 in output main shaft and the transmission mechanism 3 of drive motors 1 links together by ring flange 4, one end of transmission crank arm 5 in transmission mechanism 3 is connected by flat key with transmission main shaft 6, the other end of transmission crank arm 5 and kinematic link 7 are connected through the hinge, the two ends of kinematic link 7 are connected through the hinge with transmission crank arm 5 and insulated tension pole connector 8 respectively, the two ends up and down of insulated tension pole 9 are fixing by screw thread and contact of breaker spring connector 10 and insulated tension pole connector 8 respectively, contact of breaker spring joint 10 is connected with arc-extinguishing chamber of circuit breaker 12 through touch spring 11.Electric machine controller 2 is connected with drive motors 1 end by the shielded communication line of drawing.In the time that primary cut-out operates, first electric machine controller 2 detects the position of rotor 17 by hall position sensor 19, then drive drive motors 1 to rotate according to the position signalling detecting, when drive motors 1 rotates, drive transmission crank arm 5, kinematic link 7 around transmission main shaft 6 transmissions by transmission main shaft 6, and then drive insulated tension pole 9 vertically to move, and finally drive the moving contact motion in arc control device 12, realize the actuating of circuit breaker.
The structure of drive motors 1 as shown in Figure 2.Mainly comprise armature winding 13, motor permanent magnet 14, electric machine main shaft 15, non-magnetic interval insulant 16, rotor 17, the spacing holding device 18 of permanent magnetism, hall position sensor 19 and motor stator 20.Drive motors 1 radially assembles electric machine main shaft 15, rotor 17, motor permanent magnet 14, armature winding 13 and motor stator 20 from inside to outside successively.4 permanent magnets 14 are embedded in rotor 17 surfaces, are provided with non-magnetic interval insulant 16 between adjacent permanent magnet.The spacing holding device 18 of permanent magnetism is connected on rotor 17 with axle key, and hall position sensor 19 is placed in electric machine main shaft 15 ends.Motor stator 20 is built up by DW470 type silicon steel sheet, and rotor 17 and electric machine main shaft 15 select No. 10 forgings to make, and the model of motor permanent magnet 14 is N40 type Nd-Fe-B permanent magnet.
Between motor stator and permanent magnet, for becoming gap structure as shown in Figure 3, each piece permanent magnet adopts segmental structure, is made up of respectively the permanent magnet of the same polarity of 3 segment, and every a bit of corresponding gas length is respectively δ
1, δ
2and δ
3.For 126kV vacuum circuit-breaker, every a bit of corresponding gas length is followed successively by 5mm, 1mm and 3mm.This change gap structure is corresponding to breaker open operation motion process, in the contacting travel stage, in the contacting travel stage, gas length is less (between 1～5mm, in present embodiment, getting gas length is 3mm), air gap flux density is larger, and the electromagnetic torque that drive motors is provided is larger, thereby can make circuit breaker obtain larger just-off speed; After just point, 3/4 opened apart from the stage, and gas length minimum, is 1mm, and the electromagnetic torque maximum that under this gas length, drive motors provides can reach average separating brake rotating speed that acquisition is the fastest to meet the speed characteristics requirement of circuit breaker; Before open position, 1/4 opens distance, and gas length maximum is 5mm, and motor output torque is reduced, and is conducive to reduce the mechanical shock to motor and circuit breaker.Become gap structure and guaranteed that from structure the speed characteristics of drive motors and circuit breaker match.
Operating mechanism dead point bounce-proof position limiting structure principle as shown in Figure 5, OA
1for connecting lever, A
1b
1for kinematic link, OO ' is transmission main shaft, B
1(A
1), B
3(A
4) be respectively combined floodgate initial time (separating brake stop moment) and stop the end position of moment (separating brake initial time) kinematic link with closing a floodgate.Transmission mechanism is in the time moving to breaker closing position, and transmission mechanism just moves to and exceedes 2 ° of dead-centre positions, can utilize like this mechanism dead point effectively to prevent the mechanical springing producing because of the shock of spacing rotor and spacing buting iron.Meanwhile, utilize mechanism dead point can effectively keep away the bounce that overcomes road device touch spring, realize reliably and close a floodgate and keep.
Although more than described embodiment of the present utility model, but the those skilled in the art in this area are to be understood that, these only illustrate, and can make various changes or modifications to these execution modes, and not deviate from principle of the present utility model and essence.Scope of the present utility model is only limited by appended claims.
Claims (7)
1. a primary cut-out permanent magnetism becomes air gap finite angle electric operating mechanism, it is characterized in that: mainly formed by drive motors (1), electric machine controller (2) and transmission mechanism (3), carry out circuit breaker three phase mechanical linkage by the direct drive transmission device (3) of a drive motors (1), described electric machine controller (2) is connected with drive motors (1) end by shielding conductor;
Described transmission mechanism (3) is a set crank link structure, mainly formed by three driving cranks, each driving crank is mainly made up of transmission main shaft (6), transmission crank arm (5), kinematic link (7) and insulated tension pole (9), the output main shaft of drive motors (1) is connected with rotating spindle (6) by abutted flange dish, three driving cranks are equally spaced and are connected with transmission main shaft (6) key by transmission Abduction arm (5) one end, realize coaxial rotating; Transmission Abduction arm (5) other end connection for transmission connecting rod (7) one end, kinematic link (7) other end connects one end of insulated tension pole (9), and the other end of insulated tension pole (9) is connected to arc-extinguishing chamber of circuit breaker through touch spring;
Described drive motors (1) is mainly made up of rotor (17), armature winding (13), electric machine main shaft (15), motor stator (20), the spacing holding device of permanent magnetism (18) and hall position sensor (19), it is upper that described rotor (17), the spacing holding device of permanent magnetism (18) and hall position sensor (19) is assemblied in electric machine main shaft (15) successively, and be connected with axle key with electric machine main shaft (15); Armature winding (13) is wound in the peariform slot of motor stator (17), adopts the arrangement mode of concentrating the whole distance of individual layer; On described rotor (17), be also provided with permanent magnet (14), it is upper that permanent magnet (14) is embedded at rotor (17) successively, between adjacent two permanent magnets, is provided with non-magnetic interval insulant; Between motor stator (20) and permanent magnet (14), for becoming gap structure, each permanent magnet (14) adopts segmental structure, between motor stator (20) and permanent magnet (14), has different gas length δ
1, δ
2and δ
3, and have δ
1> δ
3> δ
2, this gap structure makes corresponding to breaker open operation motion process, and in the contacting travel stage, gas length is less, thereby obtains larger just-off speed; After just dividing, 3/4 opened apart from the stage, and gas length minimum, obtains the fastest average separating brake rotating speed, reaches the speed characteristics requirement of circuit breaker; Before open position, 1/4 opens distance, and gas length maximum reduces motor output torque, has reduced motor speed, thereby reduces the mechanical shock to motor and circuit breaker.
2. primary cut-out permanent magnetism according to claim 1 becomes air gap finite angle electric operating mechanism, it is characterized in that: the spacing holding device of permanent magnetism (18) is mainly made up of permanent magnetic material (22), spacing rotor (21) and buting iron (23), described spacing rotor (21) is connected by flat key with electric machine main shaft (15), permanent magnetic material (22) is embedded in buting iron (23), spacing rotor (21) carries out finite angle motion in the fluting of shelves iron (23), is undertaken spacing by buting iron (23).
3. primary cut-out permanent magnetism according to claim 1 becomes air gap finite angle electric operating mechanism, it is characterized in that: between described kinematic link (7) and insulated tension pole (9), be also connected with insulated tension pole connector (8), shackle rod (7) and insulated tension pole (9) all with insulated tension pole connector (8) chain connection.
4. primary cut-out permanent magnetism according to claim 1 becomes air gap finite angle electric operating mechanism, it is characterized in that: between described insulated tension pole (9) and touch spring (11), be also connected with contact of breaker spring connector (10), described insulated tension pole (9) and touch spring (11) are threaded with contact of breaker spring connector (10).
5. primary cut-out permanent magnetism according to claim 1 becomes air gap finite angle electric operating mechanism, it is characterized in that: described motor stator (20) is built up by DW470 type silicon steel sheet, and rotor (17) adopts No. 10 forgings to make.
6. primary cut-out permanent magnetism according to claim 1 becomes air gap finite angle electric operating mechanism, it is characterized in that: in the time that described spacing rotor (21) forwards separating brake or closing position to, the permanent magnetic attraction that utilizes permanent magnet (14) to produce is pulled together spacing rotor (21) and buting iron (23), makes circuit breaker realize separating brake maintenance or realize combined floodgate at closing position at open position and keeps; Transmission mechanism (3) is in the time moving to breaker closing position, transmission mechanism just moves to and exceedes dead-centre position, and dead-centre position and closing position angulation should be less than 3 °, exempt from the resilience of moving contact under the effect of touch spring (11), realize effectively spacing.
7. primary cut-out permanent magnetism according to claim 1 becomes air gap finite angle electric operating mechanism, it is characterized in that: described rotor (17) is selected N40 type Nd-Fe-B permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728486.1U CN203674117U (en) | 2013-11-16 | 2013-11-16 | High voltage breaker permanent magnetic variable air gap limited angle motor operation mechanism |
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|---|---|---|---|
| CN201320728486.1U CN203674117U (en) | 2013-11-16 | 2013-11-16 | High voltage breaker permanent magnetic variable air gap limited angle motor operation mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN203674117U true CN203674117U (en) | 2014-06-25 |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560055A (en) * | 2013-11-16 | 2014-02-05 | 沈阳工业大学 | Permanent magnet variable air gap limited rotation angle motor operation mechanism of high-voltage breaker |
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2013
- 2013-11-16 CN CN201320728486.1U patent/CN203674117U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560055A (en) * | 2013-11-16 | 2014-02-05 | 沈阳工业大学 | Permanent magnet variable air gap limited rotation angle motor operation mechanism of high-voltage breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |