CN107833783A - The powder operation device and its actuating method of a kind of dc circuit breaker - Google Patents
The powder operation device and its actuating method of a kind of dc circuit breaker Download PDFInfo
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- CN107833783A CN107833783A CN201710859374.2A CN201710859374A CN107833783A CN 107833783 A CN107833783 A CN 107833783A CN 201710859374 A CN201710859374 A CN 201710859374A CN 107833783 A CN107833783 A CN 107833783A
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- Prior art keywords
- operation device
- iron core
- separating brake
- powder operation
- winding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
Abstract
Disclose the powder operation device and its actuating method of a kind of dc circuit breaker, powder operation device includes vacuum bubbles, repulsive force mechanism connects the electromagnetic mechanism of the repulsive force mechanism with via connecting rod, the mechanical contact being made up of static contact and moving contact is provided with the vacuum bubbles, the moving contact connects repulsive force mechanism via insulated tension pole, the repulsive force mechanism includes switching winding, repulsion dish, charging and discharging circuit and the first controller for controlling the charging and discharging circuit triggering sub-switching operation, the repulsion dish connect connecting rod via dynamic guide rod, switching winding is located above repulsion dish and gap is not more than 3.5mm；The electromagnetic mechanism includes static iron core, dynamic iron core, suction and coil, hold-in winding, separating brake back-moving spring, touch spring and the second controller of annular hollow.
Description
Technical field
The present invention relates to a kind of dc circuit breaker field, the powder operation device of particularly a kind of dc circuit breaker and its actuating
Method.
Background technology
It is easier to control etc. due to straight-flow system its circuit low cost, without capacity current, without eddy-current loss, trend excellent
Point, high direct voltage DC transmission system receive much concern.Particularly some specific occasions, such as large ship electric power system, city rail
The straight-flow systems such as road traffic electric power system have obtained significant progress.The capacity sustainable growth of simultaneous straight-flow system and electricity
The continuous improvement of grade is pressed, its peak value of short can reach more than 100kA, while its short circuit current climbing is also in 15A/us
More than.
Operating mechanism in a kind of breaker disclosed in patent document CN201156495Y includes an electromagnetic repulsion force driving machine
Structure and a bistable state combination disk spring maintaining body；The electromagnetic repulsion force drive mechanism includes two discharge loops, with being put described in two
What electrical circuit connected respectively is arranged on the switching winding and closing coil in upper and lower supporting plate, the switching winding and closing line
A gap is left by bolt between circle, and linked into an integrated entity, a repulsion disk is provided with the gap, on the repulsion disk
Fixation wears a repulsion bar, and the repulsion bar upper and lower end slides respectively is fed through the switching winding and closing coil, described
Repulsion bar upper end wear expose the switching winding position it is corresponding with a photoelectric sensor, set a sensor shadow shield；It is described
Bistable state combination disk spring maintaining body includes a confining force bar, and its upper end is connected with the repulsion bar lower end, the confining force bar
On be fixedly installed multiple springs gear, blocking top in the spring is provided with the disc spring that at least two panels is oppositely arranged, the periphery of the disc spring
It is fixedly connected on multiple long threaded rods, is fixedly connected at the top of the long threaded rod on the lower supporting plate.The patent structure is simple,
Bistable state combination disk spring maintaining body moving-mass and impact kinetic energy are small, and power producing characteristics design is simple, but the patent can not be realized
Specified divide-shut brake, at the same short-circuit current when arriving can quick acting switching-off, and on the premise of two kinds of functions are realized, realize volume
Determine divide-shut brake life-span height, quick acting switching-off movable member quality is small, speed is fast, improves the service life of dc circuit breaker, reduces and closes
Lock speed.
A kind of high-speed switch based on permanent magnet holding mechanism disclosed in patent document CN205723330U includes being sequentially connected
Top guide bar (1), vacuum interrupter (2), middle guide rod, insulator (3), lower guide rod (4) and keep use dynamic iron core (9), described
Repulsion dish (6) are set with lower guide rod (4), switching winding (5) is installed above the repulsion dish (6) and is provided with thereunder
Closing coil (7)；Upper holding static iron core, holding static iron core on this are installed above the holding dynamic iron core (9)
Centre is provided with combined floodgate and keeps permanent magnet (11), and is provided with lower holding static iron core below the holding dynamic iron core (9),
The lower holding keeps permanent magnet (14) with separating brake is provided among static iron core.The patent is opened based on the rapid repulsion that permanent magnetism is kept
Close, switch opening velocity can be effectively improved, but the patent can not realize specified divide-shut brake, while during short-circuit current arrival
Can quick acting switching-off, and on the premise of two kinds of functions are realized, realize that the specified divide-shut brake life-span is high, quick acting switching-off movable member matter
Measure that small, speed is fast, improve the service life of dc circuit breaker, reduce closing speed.
Current quick operating mechanism is difficult to the life requirements for meeting specified divide-shut brake on the basis of quick acting switching-off is realized.
Some frequent break-makes of needs use occasion can not the preferably compatible specified divide-shut brake life-span it is high and quick acting switching-off is fireballing
It is required that.
Disclosed above- mentioned information is used only for strengthening the understanding to background of the present invention in the background section, it is thus possible to
Include the information of prior art known to a person of ordinary skill in the art in not forming home.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of powder operation device, it disclosure satisfy that quick acting switching-off speed height
With the requirement of specified divide-shut brake long lifespan.
The purpose of the present invention is to be achieved by the following technical programs.
One aspect of the present invention, a kind of powder operation device of dc circuit breaker include vacuum bubbles, repulsive force mechanism and via even
Bar connects the electromagnetic mechanism of the repulsive force mechanism.
The mechanical contact being made up of static contact and moving contact is provided with the vacuum bubbles, the moving contact is via insulated tension pole
Repulsive force mechanism is connected, the repulsive force mechanism includes switching winding, repulsion dish, charging and discharging circuit and the control charging and discharging circuit and touched
Send out sub-switching operation the first controller, the repulsion dish via dynamic guide rod connect connecting rod, switching winding be located at repulsion dish top and
Gap is not more than 3.5mm.
Static iron core, dynamic iron core, suction and the coil, hold-in winding, separating brake that the electromagnetic mechanism includes annular hollow reset bullet
Spring, touch spring and second controller, the static iron core is interior to set suction and coil and hold-in winding, and connecting rod passes through static iron core hollow
Part, the dynamic iron core are located at below the static iron core, and the dynamic guide rod being connected on connecting rod is through static iron core hollow space and divides
It is not connected with repulsion dish and dynamic iron core, touch spring and separating brake back-moving spring, the separating brake back-moving spring is surrounded with dynamic guide rod
End be against in dynamic iron core.
When the powder operation device is connected to reclosing command, second controller control, which inhales to be powered with coil and hold-in winding, to be caused
Then dynamic iron core first overcomes separating brake back-moving spring elastic force while overcomes the elastic force of separating brake back-moving spring and touch spring to move upwards,
When the powder operation device is in closing position, second controller control, which is inhaled, to be powered with coil blackout and hold-in winding and causes dynamic iron
Core and static iron core are stably held in suction and state with constant compression touch spring.
When the powder operation device is connected to separating brake instruction, second controller control hold-in winding is powered off and inhaled reverse with coil
It is powered, dynamic iron core first moves downward and then in separating brake back-moving spring list under touch spring and separating brake back-moving spring collective effect
Solely moved downward under effect and realize sub-switching operation, when the powder operation device is in open position, separating brake back-moving spring keeps dividing
Lock.
In the powder operation device of dc circuit breaker, when the powder operation device is connected to quick acting switching-off instruction, the first controller
Switching winding electric discharge is controlled, repulsion dish drivening rod realizes quick disjunction.
In the powder operation device of dc circuit breaker, the charging and discharging circuit by the driving electric capacity with precharge, IGCT,
Coil is composed in series, coil both ends reverse parallel connection fly-wheel diode.
In the powder operation device of dc circuit breaker, the powder operation device is provided with buffer unit below electromagnetic mechanism, works as institute
When stating powder operation device and being in open position, separating brake back-moving spring and buffer unit keep separating brake, buffer unit include oil bumper,
Damping buffer or spring buffer.
In the powder operation device of dc circuit breaker, when the powder operation device is connected to reclosing command, second controller uses
Electric capacity is to suction and coil electricity.
In the powder operation device of dc circuit breaker, circle or annular shape that the repulsion dish are vortexed for generation, repulsion dish
Including copper or aluminium alloy conductive material.
In the powder operation device of dc circuit breaker, the section shape of the static iron core includes U-shaped, E types and helical is tubular, institute
It is permeability magnetic material to state static iron core.
In the powder operation device of dc circuit breaker, the hold-in winding seals in resistance, and separating brake back-moving spring has predetermined
Pre compressed magnitude, switching winding include sandwich wound coil, and the material of the dynamic guide rod is non-magnet material.
Insulating element is provided with the powder operation device of dc circuit breaker, between the repulsive force mechanism and electromagnetic mechanism to isolate,
The pre compressed magnitude and coefficient of elasticity of touch spring are more than separating brake back-moving spring.
According to another aspect of the present invention, the actuating method and step of the powder operation device of the dc circuit breaker described in a kind of utilization
Including：
The powder operation device is connected to reclosing command, and second controller control, which inhales to be powered with coil and hold-in winding, causes dynamic iron
Then core first overcomes separating brake back-moving spring elastic force while overcomes the elastic force of separating brake back-moving spring and touch spring to move upwards, work as institute
When stating powder operation device and being in closing position, second controller control is inhaled and coil blackout and hold-in winding are powered cause dynamic iron core and
Static iron core is stably held in suction and state with constant compression touch spring.
The powder operation device is connected to separating brake instruction, and second controller control hold-in winding is powered off and inhaled reversely to be led to coil
Electricity, dynamic iron core first move downward and then independent in separating brake back-moving spring under touch spring and separating brake back-moving spring collective effect
Moved downward under effect and realize sub-switching operation, when the powder operation device is in open position, separating brake back-moving spring and buffering fill
Put holding separating brake.
The powder operation device is connected to quick acting switching-off instruction, and the control switching winding electric discharge of the first controller, repulsion dish, which drive, to be connected
Bar realizes quick disjunction.
The invention provides simple in construction, it is easy to the powder operation device manipulated, it is possible to achieve the specified divide-shut brake life-span is high, quickly
Separating brake movable member quality is small, speed is fast, can improve the service life of dc circuit breaker, reduces closing speed.The actuating
Device realizes specified divide-shut brake life-span height, while being capable of quick acting switching-off during short-circuit current arrival.The structure inhale and power by
Electromagnet provides, by rationally setting touch spring and separating brake back-moving spring, realize stable and relatively low impact velocity inhale and；Institute
When stating powder operation device and being in holding position, the suction between sound iron core and confining force compression contacts spring is utilized to provide contact final pressure
Power.In specified separating brake, coil power down, dynamic iron core realizes separating brake in the presence of separating brake back-moving spring and touch spring.Short
Road electric current is arrived when needing quick acting switching-off, and switching winding is discharged by electric capacity, vortex, coil and metal are induced in repulsion dish
Powerful electromagnetic repulsion force is produced between disk, so as to which drivening rod moves, realizes the quick disjunction of switch.Powder operation device is realized specified
The function of divide-shut brake and quick acting switching-off.
Described above is only the general introduction of technical solution of the present invention, in order to cause the technological means of the present invention clearer
Understand, reach the degree that those skilled in the art can be practiced according to the content of specification, and in order to allow the present invention
Above and other objects, features and advantages can become apparent, below with the present invention embodiment illustrated
Explanation.
Brief description of the drawings
By reading the detailed description hereafter in preferred embodiment, the advantages of present invention is various other and benefit
It will be clear understanding for those of ordinary skill in the art.Figure of description is only used for showing the purpose of preferred embodiment,
And it is not considered as limitation of the present invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings.And in whole accompanying drawing, identical part is presented with like reference characters.
In the accompanying drawings：
Fig. 1 is that the structure when powder operation device of dc circuit breaker according to an embodiment of the invention is in open position is shown
It is intended to；
Fig. 2 is that the structure when powder operation device of dc circuit breaker according to an embodiment of the invention is in closing position is shown
It is intended to；
Fig. 3 is the structural representation of the repulsive force mechanism of the powder operation device of dc circuit breaker according to an embodiment of the invention
Figure；
The step of Fig. 4 is the actuating method of the powder operation device according to an embodiment of the invention using dc circuit breaker is shown
It is intended to；
Wherein, 1 is high speed repulsive force mechanism, and 2 be electromagnetic mechanism, and 3 be mechanical contact, and 4 be insulated tension pole, and 5 be switching winding,
6 be repulsion dish, and 7 be static iron core, and 8 be touch spring, and 9 be separating brake back-moving spring, and 10 be connecting rod, and 11 be suction and coil, and 12 be guarantor
Coil is held, 13 be dynamic iron core, and 14 be buffer, and 15 be static contact, and 16 be moving contact.
The present invention is further explained below in conjunction with drawings and examples.
Embodiment
The specific embodiment of the present invention is more fully described below with reference to accompanying drawings.Although show the present invention's in accompanying drawing
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without should be limited by embodiments set forth here
System.Conversely, there is provided these embodiments are to be able to be best understood from the present invention, and can be complete by the scope of the present invention
Be communicated to those skilled in the art.
It should be noted that some vocabulary has been used to censure specific components among specification and claim.Ability
Field technique personnel it would be appreciated that, technical staff may call same component with different nouns.This specification and right
It is required that not in a manner of the difference of noun is used as and distinguishes component, but differentiation is used as with the difference of component functionally
Criterion."comprising" or " comprising " as mentioned in working as in specification in the whole text and claim are an open language, therefore should be solved
It is interpreted into " include but be not limited to ".Specification subsequent descriptions for implement the present invention better embodiment, so it is described description be with
For the purpose of the rule of specification, the scope of the present invention is not limited to.Protection scope of the present invention is when regarding appended right
It is required that institute's defender is defined.
For ease of the understanding to the embodiment of the present invention, solved below in conjunction with accompanying drawing is further by taking specific embodiment as an example
Explanation is released, and each accompanying drawing does not form the restriction to the embodiment of the present invention.
In order to more fully understand, Fig. 1 be dc circuit breaker according to an embodiment of the invention powder operation device be in point
Structural representation during gate position, the powder operation device of dc circuit breaker include vacuum bubbles, repulsive force mechanism 1 and connected via connecting rod 10
The electromagnetic mechanism 2 of the repulsive force mechanism 1.
Be provided with the mechanical contact 3 being made up of static contact 15 and moving contact 16 in the vacuum bubbles, the moving contact 16 via
Insulated tension pole 4 connects repulsive force mechanism 1, and the repulsive force mechanism 1 includes switching winding 5, repulsion dish 6, charging and discharging circuit and control institute
The first controller of charging and discharging circuit triggering sub-switching operation is stated, the repulsion dish 6 connect connecting rod 10, switching winding via dynamic guide rod
5 are not more than 3.5mm positioned at the top of repulsion dish 6 and gap.
Static iron core 7 of the electromagnetic mechanism 2 including annular hollow, dynamic iron core 13, suction and coil 11, hold-in winding 12, divide
Lock back-moving spring 9, touch spring 8 and second controller, the static iron core 7 is interior to set suction and coil 11 and hold-in winding 12, even
Bar 10 passes through the hollow space of static iron core 7, and positioned at the lower section of static iron core 7, be connected on connecting rod 10 dynamic leads the dynamic iron core 13
Bar is through the hollow space of static iron core 7 and is connected respectively with repulsion dish 6 and dynamic iron core 13, and the He of touch spring 8 is surrounded with dynamic guide rod
Separating brake back-moving spring 9, the end of the separating brake back-moving spring 9 are against in dynamic iron core 13.
When the powder operation device is connected to reclosing command, second controller control is inhaled to be powered with coil 11 and hold-in winding 12
So that then dynamic iron core 13 first overcomes the elastic force of separating brake back-moving spring 9 while overcomes the elastic force of separating brake back-moving spring 9 and touch spring 8
Motion upwards, when the powder operation device is in closing position, second controller control is inhaled and coil 11 powers off and hold-in winding
12, which are powered, causes dynamic iron core 13 and static iron core 7 to be stably held in suction and state with constant compression touch spring 8.
In one embodiment, referring to Fig. 1, gate-dividing state, after being connected to reclosing command, electric capacity discharges suction and coil 11,
Static iron core 7 magnetizes, and dynamic iron core 13 overcomes counter-force drivening rod 10 to move upwards in the presence of electromagnetic attraction, while hold-in winding
12 start power up.Inhaling with during, dynamic iron core 13 overcomes the counter-force effect of two springs.Further, separating brake back-moving spring 9
There is certain pre compressed magnitude, and with the reduction continued compression of sound iron core stroke.
Further, to realize that sound iron core can quickly be inhaled and and inhale and be the unsuitable too high mesh of impact velocity
, while can have larger decrement and larger elasticity with one confining force of the stable offer in position, touch spring 8 inhaling
Coefficient, stroke the last period distance in, touch spring 8 dynamic iron core 13 move and move, without compression.In sound iron core
Air gap is smaller, and when electromagnetic attraction is larger, touch spring starts to act on, and after dynamic/static contact basis, sound iron core also has part
The excess of stroke, touch spring 8 continues to compress until sound iron core is inhaled and the offer contact end pressure of touch spring 8 completely.Sound iron simultaneously
Confining force between core can be more than making a concerted effort for touch spring 8 and separating brake back-moving spring 9, and leave surplus.
Further, in order to avoid inhale and when inhale and 11 zooming electric current of coil induced in hold-in winding 12
Reverse current, the series diode in the loop of hold-in winding 12.
When the powder operation device is connected to separating brake instruction, second controller control hold-in winding 12 is powered off and inhaled and coil 11
Reversely it is powered, dynamic iron core 13 is first moved downward under touch spring 8 and the collective effect of separating brake back-moving spring 9 and then answered in separating brake
Moved downward under the independent role of spring 9 of position and realize sub-switching operation, when the powder operation device is in open position, separating brake resets bullet
Spring 9 keeps separating brake.
In one embodiment, "on" position is in referring to Fig. 2, the present invention, after being connected to separating brake instruction, hold-in winding 12 falls
Electricity.By inhaling, reversely energization demagnetization or hold-in winding 12 are existed by continuous current circuit fast dissipation energy, dynamic iron core 13 with coil 11
Drivening rod 10 moves downward in the presence of touch spring 8 and separating brake back-moving spring 9 so that dynamic/static contact separates.
In the preferred embodiment of the powder operation device of described dc circuit breaker, when the powder operation device is connected to quick acting switching-off
During instruction, the first controller control switching winding 5 discharges, and the drivening rod of repulsion dish 6 realizes quick disjunction.
In one embodiment, "on" position is in referring to Fig. 3, powder operation device, when short circuit current arrives, passes through preliminary filling
The electric capacity of electricity discharges to the switching winding 5 of such as sandwich wound coil, produces a pulse current for maintaining several milliseconds.In pulse current
Under effect, vortex will be induced in repulsion dish 6, and makes to produce powerful electromagnetic repulsion force between switching winding 5 and metal dish, so as to
Drivening rod 10 moves, and realizes the quick disjunction of switch.
The advantage of the invention is that quick acting switching-off function when short circuit current arrives is realized, and movable member quality during separating brake
Small, speed is high.Electromagnet is utilized in specified divide-shut brake and in the case of keeping, the divide-shut brake life-span is high, reliable and stable.The present invention is real
Existing reliable and stable suction and, while collision free speed is too high, starts to compress through the smaller moment touch spring of iron core air gap dynamic.
Now, air gap is smaller, and electromagnetic attraction is larger, can overcome touch spring counter-force, meanwhile, touch spring 8 has larger precommpression
Measure and coefficient of elasticity is larger, using the teaching of the invention it is possible to provide a good cushioning effect.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the charging and discharging circuit is by with precharge
Driving electric capacity, IGCT, coil be composed in series, coil both ends reverse parallel connection fly-wheel diode.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the powder operation device is under electromagnetic mechanism 2
Side is provided with buffer unit 14, and when the powder operation device is in open position, separating brake back-moving spring 9 and buffer unit 8 keep dividing
Lock, buffer unit 14 include oil bumper, damping buffer or spring buffer.
In the preferred embodiment of the powder operation device of described dc circuit breaker, when the powder operation device is connected to reclosing command
When, second controller is powered using electric capacity to suction and coil 11.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the repulsion dish 6 are to produce the circle of vortex
Ring shape shape, repulsion dish 6 include copper or aluminium alloy conductive material.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the section shape of the static iron core 7 includes U
Type, E types or helical are tubular, and the static iron core 7 is permeability magnetic material.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the hold-in winding 12 seals in resistance, point
Lock back-moving spring 9 has predetermined pre compressed magnitude, and switching winding 5 includes sandwich wound coil, and the material of the dynamic guide rod is non-magnetic
Material.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the repulsive force mechanism 1 and electromagnetic mechanism 2 it
Between be provided with insulating element isolate, the pre compressed magnitude and coefficient of elasticity of touch spring 8 are more than separating brake back-moving spring 9.
In the preferred embodiment of the powder operation device of described dc circuit breaker, the insulated tension pole 4 and vacuum bubble moving end
It is connected through a screw thread, the switching winding 5 is bolted on insulation board；
In the preferred embodiment of the powder operation device of described dc circuit breaker, the top of the connecting rod 10 is connected with repulsion dish
6, the disk of repulsion 6 is close to switching winding 5；Moving contact 16 is connected with the top of connecting rod 10 and is stretched into vacuum bubbles.
In the preferred embodiment of the powder operation device of described dc circuit breaker, inhaled and pull-in winding 11 in making process
Electric current is not excessive, and impact velocity is not too high, and suction and coil 11 are discharged using electric capacity.
Preferably, to ensure that combined floodgate is to maintain the temperature rise of coil 12 and reaches requirement, reasonable selection line footpath and the number of turn, while can go here and there
Entering resistance reduces coil power dissipation.
The step of Fig. 4 is the actuating method of the powder operation device according to an embodiment of the invention using dc circuit breaker is shown
Be intended to, using the powder operation device of described dc circuit breaker actuating method the step of include：
The powder operation device is connected to reclosing command, and second controller control, which inhales to be powered with coil 11 and hold-in winding 12, to be caused
Dynamic iron core 13 first overcomes the elastic force of separating brake back-moving spring 9 and then while overcomes the elastic force of separating brake back-moving spring 9 and touch spring 8 upward
Motion, when the powder operation device is in closing position, second controller control is inhaled and coil 11 powers off and hold-in winding 12 is logical
Electricity causes dynamic iron core 13 and static iron core 7 to be stably held in suction and state with constant compression touch spring 8.
The powder operation device is connected to separating brake instruction, and second controller control hold-in winding 12 is powered off and inhaled reverse with coil 11
It is powered, dynamic iron core 13 first moves downward under touch spring 8 and the collective effect of separating brake back-moving spring 9 and then resets bullet in separating brake
Moved downward under the independent role of spring 9 and realize sub-switching operation, when the powder operation device is in open position, separating brake back-moving spring 9
Separating brake is kept with buffer unit 14.
The powder operation device is connected to quick acting switching-off instruction, and the first controller control switching winding 5 discharges, and repulsion dish 6 drive
Connecting rod 10 realizes quick disjunction.
Although embodiment of the present invention is described above in association with accompanying drawing, the invention is not limited in above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.One of ordinary skill in the art is under the enlightenment of this specification and in the scope for not departing from the claims in the present invention and being protected
In the case of, the form of many kinds can also be made, these belong to the row of protection of the invention.
Claims (10)
1. a kind of powder operation device of dc circuit breaker, it includes vacuum bubbles, repulsive force mechanism (1) and via described in connecting rod (10) connection
The electromagnetic mechanism (2) of repulsive force mechanism (1), it is characterised in that：
The mechanical contact (3) being made up of static contact (15) and moving contact (16), the moving contact (16) are provided with the vacuum bubbles
Via insulated tension pole (4) connection repulsive force mechanism (1), the repulsive force mechanism (1) includes switching winding (5), repulsion dish (6), charge and discharge
Electrical circuit and the first controller for controlling the charging and discharging circuit triggering sub-switching operation, the repulsion dish (6) connect via dynamic guide rod
Connective pole (10), switching winding (5) is located above repulsion dish (6) and gap is not more than 3.5mm；
The electromagnetic mechanism (2) includes static iron core (7), dynamic iron core (13), suction and coil (11), the hold-in winding of annular hollow
(12), separating brake back-moving spring (9), touch spring (8) and second controller, interior set of the static iron core (7) are inhaled and coil (11)
With hold-in winding (12), connecting rod (10) passes through static iron core (7) hollow space, and the dynamic iron core (13) is located at the static iron core (7)
Lower section, be connected to dynamic guide rod on connecting rod (10) through static iron core (7) hollow space and respectively with repulsion dish (6) and dynamic iron core
(13) it is connected, touch spring (8) and separating brake back-moving spring (9), the end of the separating brake back-moving spring (9) is surrounded with dynamic guide rod
It is against in dynamic iron core (13)；
When the powder operation device is connected to reclosing command, second controller control is inhaled and coil (11) and hold-in winding (12) energization
So that then dynamic iron core (13) first overcomes separating brake back-moving spring (9) elastic force while overcomes separating brake back-moving spring (9) and touch spring
(8) elastic force moves upwards, and when the powder operation device is in closing position, second controller control is inhaled and coil (11) power-off
And hold-in winding (12) is powered and causes dynamic iron core (13) and static iron core (7) to be stably held in suction and state with constant compression contact bullet
Spring (8)；
When the powder operation device is connected to separating brake instruction, second controller control hold-in winding (12) power-off and suction and coil (11)
Reversely it is powered, dynamic iron core (13) is first moved downward under touch spring (8) and separating brake back-moving spring (9) collective effect and then existed
Moved downward under separating brake back-moving spring (9) independent role and realize sub-switching operation, when the powder operation device is in open position, point
Lock back-moving spring (9) keeps separating brake.
2. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that it is preferable, when the actuating fills
Put when being connected to quick acting switching-off instruction, the first controller control switching winding (5) electric discharge, repulsion dish (6) drivening rod is realized quick
Disjunction.
3. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：The charging and discharging circuit by with
Driving electric capacity, IGCT, the coil of precharge are composed in series, coil both ends reverse parallel connection fly-wheel diode.
4. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：The powder operation device is in electromagnetic motor
Buffer unit (14) is provided with below structure (2), when the powder operation device is in open position, separating brake back-moving spring (9) and buffering
Device (8) keeps separating brake, and buffer unit (14) includes oil bumper, damping buffer or spring buffer.
5. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：When the powder operation device is connected to conjunction
When lock instructs, second controller is powered using electric capacity to suction and coil (11).
6. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：The repulsion dish (6) are generation
The circle or annular shape of vortex, repulsion dish (6) include copper or aluminium alloy conductive material.
7. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：The section of the static iron core (7)
Shape includes U-shaped, E types or helical is tubular, and the static iron core (7) is permeability magnetic material.
8. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：The hold-in winding (12) seals in
Resistance, separating brake back-moving spring (9) have predetermined pre compressed magnitude, and switching winding (5) includes sandwich wound coil, the material of the dynamic guide rod
Expect for non-magnet material.
9. the powder operation device of dc circuit breaker according to claim 1, it is characterised in that：The repulsive force mechanism (1) and electricity
It is provided with insulating element between magnetic mechanism (2) to isolate, the pre compressed magnitude and coefficient of elasticity of touch spring (8) are more than separating brake back-moving spring
(9)。
10. a kind of actuating method of the powder operation device of dc circuit breaker using any one of claim 1-9, its step
Including：
The powder operation device is connected to reclosing command, and second controller control, which inhales to be powered with coil (11) and hold-in winding (12), to be caused
Dynamic iron core (13) first overcomes separating brake back-moving spring (9) elastic force and then while overcomes separating brake back-moving spring (9) and touch spring (8)
Elastic force moves upwards, and when the powder operation device is in closing position, second controller control is inhaled and coil (11) power-off and guarantor
Coil (12) is held to be powered so that dynamic iron core (13) and static iron core (7) are stably held in suction and state with constant compression touch spring
(8)；
The powder operation device is connected to separating brake instruction, second controller control hold-in winding (12) power-off and suction and coil (11) is reverse
It is powered, dynamic iron core (13) first moves downward and then in separating brake under touch spring (8) and separating brake back-moving spring (9) collective effect
Moved downward under back-moving spring (9) independent role and realize sub-switching operation, when the powder operation device is in open position, separating brake is multiple
Position spring (9) and buffer unit (14) keep separating brake；
The powder operation device is connected to quick acting switching-off instruction, the first controller control switching winding (5) electric discharge, and repulsion dish (6) drive
Connecting rod (10) realizes quick disjunction.
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| CN201710859374.2A CN107833783B (en) | 2017-09-21 | 2017-09-21 | A kind of powder operation device and its actuating method of dc circuit breaker |
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| CN107833783B CN107833783B (en) | 2019-06-11 |
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| CN112927981A (en) * | 2021-01-07 | 2021-06-08 | 天津平高智能电气有限公司 | Opening electromagnet of spring operating mechanism |
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