CN109256291A - DC arc extinguishing devices and electromechanical DC switchgear - Google Patents
DC arc extinguishing devices and electromechanical DC switchgear Download PDFInfo
- Publication number
- CN109256291A CN109256291A CN201810756225.8A CN201810756225A CN109256291A CN 109256291 A CN109256291 A CN 109256291A CN 201810756225 A CN201810756225 A CN 201810756225A CN 109256291 A CN109256291 A CN 109256291A
- Authority
- CN
- China
- Prior art keywords
- arc
- chamber
- switchgear
- electric arc
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
-
- 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
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle
- H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the AC cycle for interrupting DC
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H9/346—Details concerning the arc formation chamber
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a direct current arc extinguishing device for a motor-type switching device (1), in particular for a direct current circuit breaker, having an arc chamber (20) which itself has a plurality of arc plates (21) arranged at a distance from one another and parallel to one another. The arc extinguishing device also has an arc generating chamber (30) arranged immediately in front of the arc extinguishing chamber (20), the arc generating chamber itself having a longitudinal middle plane (L) directed towards the arc extinguishing chamber (20) and permanent magnets (31) arranged on both sides of the longitudinal middle plane (L). According to the invention, the arc quenching device has an odd number of permanent magnets (31) with identical magnetic properties, which are arranged on both sides of the arc generating chamber (30) in a first direction (R1) which is orthogonal with respect to the longitudinal mid-plane (L), such that an asymmetrical magnetic field is formed. By arranging the permanent magnets (31) in a row in the first direction (R1), a compact structure in the longitudinal direction of the switching device (1) is achieved, which also exerts a significant magnetic force (F) immediately in front of the arc-extinguishing chamber (20) also to the arc (11) immediately in front of the arc-extinguishing chamber (20).
Description
Technical field
The present invention relates to a kind of direct current arc-control device for electric motor type direct current electric switching system, direct current arc-control devices
Electric arc before with spark chamber and being immediately follows arranged in spark chamber generates chamber, and the spark chamber has multiple sums being spaced apart from each other
The arc quenching plate being arranged parallel to each other, the electric arc generate the permanent magnet that chamber has the two sides for being arranged in longitudinal mid-plane.This
Invention further relates to a kind of electric motor type direct current electric switching system, especially a kind of direct current transmission line protective switch, with this direct current
Electric arc-control device.Term " switchgear " be both interpreted as herein protective switch equipment, such as breaker, line protection switch or
Failure current protection switch also is understood as the switchgear of the defencive function without oneself, such as on-load switch, disconnect switch
Or load-break switch.
Background technique
Various protective switch equipment known to from the prior art: breaker is specially designed for high current.Route protection is opened
Closing (so-called LS switch) is a kind of with overcurrent protection in the electronic device and to be used especially in low voltage electric network field
In.Breaker and line protection switch ensure that the shutdown of the safety in short circuit, and electrical appliance and electric utility is protected to exempt from
Overloaded, for example, electric wiring as electric current it is excessive caused by it is excessively heated caused by damage.The breaker and route protection are opened
Pass is designed as automatically turning off monitored circuit and in short-circuit conditions or when overloading with this and remaining line
Road network disconnects.Therefore breaker and line protection switch are especially used as that electric circuit is monitored and protected in electric energy supply network
Switch and safety element.Line protection switch in principle by 10 2,015 217 704 2 980 822 A1 of A1, EP of document DE,
10 2,015 213 375 A1, DE 10 2,013 211 539 of DE is known to A1 or 2 685 482 B1 of EP.
Personnel, property or flameproof protection are also able to achieve by failure current protection switch.A kind of switch is herein related to set
Standby, when electric current " is taken a wrong way ", for example flows to the earth by human body, there is event in electrical equipment and facility in this switchgear
The equipment and facility are turned off in the shortest time when barrier and thus disconnected with other power grids.For this purpose, fault-current protection is opened
Compare the current strength for the electric current for flowing to electrical appliance and the intensity of the electric current flowed back to from electrical appliance in pass.Failure current protection switch example
As 0 957 558 A2, DE 10 2,014 208 036 of document EP known to A1 or 10 2,014 202 485 A1 of DE.
Furthermore by the prior art it is also known that not having the switchgear of the defencive function of oneself.For example including so-called load
Switch, disconnect switch or load-break switch.Last-mentioned load-break switch is a kind of switchgear, the switchgear
The requirement (connecting under electric load) to on-load switch was both met in terms of its functionality, and had also met and disconnect switch proposition is wanted
It asks and (disconnects electric utility component to approximate inactivity).Load-break switch is suitable for shutdown high current, but its switch performance is former
It is smaller than breaker on then.In low voltage electric network, load-break switch for example for interrupting the main circuit within the scope of total distribution,
In, breaking capacity is usually in the range of 40kA to 63kA.According to DIN EN 60947-3, load-break switch, on-load switch
So-called different usage type is all divided into according to its respective effective power with disconnect switch, in these usage types
Different requirements is defined according to applicable cases.
Above-mentioned switchgear passes through two connecting terminals mostly and is connected with the electric conductor conducting type of circuit to be monitored, so as to
The electric current in corresponding electric conductor is interrupted when needed.For this purpose, switchgear has switch contact, switch contact has static touching
Put element (so-called fixed contact) and relative to the static movable contact element of contact element (so-called movable contact).It is dynamic
Contact contacts fixed contact so as to conducting electric current.Movable contact is removed to separate electric current from fixed contact.Moving contact for example passes through herein
The switching mechanism of switchgear can manipulate, and switch contact is opened and closed.For protective switch equipment, thus can be with
Contact is turned on the switch when there is such as short circuit of predefined state or overload, so as to by the circuit being monitored and electric wiring
Net separates.This switchgear is in low-voltage technology field known to series installation device.
Temporarily, at least caused herein by the opening interruptive current of switch contact in static and movable contact
Voltage breakdown between element, because the spacing during the separation process of contact element is also not enough to for insulating.If two
There are gases between a switch contact, then between contact element in the case where corresponding high voltage differential the gas just by arcing
Ionization, wherein since gas discharge just constitutes electric arc.In order to extinguish this electric arc, conventional switchgear has interrupter cartridge
It sets, such as the so-called spark chamber for the arc quenching plate being spaced apart from each other with multiple sums being adjacently positioned.Alternatively, arc-control device can also
To be only made of arc quenching plate that is multiple, orienting in parallel to each other or cooling fin.If driving electric arc to the direction of arc-control device,
Electric arc is divided into multiple sub- electric arcs when hitting arc quenching plate, and then sub- electric arc concatenation ground burns between single arc quenching plate.It is more
It is a, electrically first latter linked sub- electric arc leads to higher arc voltage together in succession, as a result cause electric arc to be extinguished more quickly.
Quickly extinguish and be important, to be kept with the energy input in the associated shell to switchgear of electric arc
Must be as small as possible, to avoid the damage on switchgear and on electronic equipment.In order to drive as quickly as possible electric arc into
In spark chamber and extinguish the electric arc in spark chamber, switchgear, the switchgear being especially prescribed in AC network
Usually there is so-called arc blow-out wire loop.As used herein is a kind of wire turn, the wire turn be arranged in the region of switch contact and
It works as electric coil.The arc blow-out wire loop can be continuously energized, but more meaningful mode is electrically to connect into,
So that arc blow-out wire loop is just extraly powered when there is electric arc due to switch contact opening.It is produced by the arc blow-out wire loop being energized
Raw electromagnetic field is orientated herein, so that the electromagnetic field applies Lorentz force on electric arc, the Lorentz force is by electric arc from switch
Contact is squeezed to the direction of arc-control device.Corresponding switchgear is for example by 2 841 004 B1 of patent document DE or by public affairs
It opens known to 3 333 792 A1 of document DE.However arc blow-out wire loop has the drawback that, arc blow-out wire loop only produces at low currents
Raw small electromagnetic field, so that the resulting electromagnetic force on electric arc is smaller.Therefore, whole effects of arc blow-out wire loop
It is just played when for example there is high current in a short-circuit situation.
To switchgear, the so-called DC switchgear applied for direct current, to the arc extinguishing of the electric current less than 150 amperes
Especially problematic, because in this electric current, the intrinsic magnetic field of dynamic driving power electric arc in other words is for driving electric arc into arc extinguishing
In chamber and electric arc is remained there and is made not high enough for arc extinction.For the power in humidification to electric arc, usually make
Use permanent magnet.This mode that for example may be implemented is respectively to arrange a permanent magnet in the two sides that electric arc generates chamber.The aid of permanent magnet
The orientation direction in the magnetic field for being able to achieve relatively high magnetic field strength, however being generated by permanent magnet be in time it is constant, therefore
When installing permanent magnet it is noted that relative to the correct magnetic pole of each current direction, to be generated on electric arc with desired direction
Corresponding power.Therefore alternating current (AC) is applied, (due to the continually changing polarity of electric arc) is opened without using influence in principle
Close the permanent magnet of electric arc in equipment.
The magnetic field generated by permanent magnet is usually symmetrical and is orientated, so that electric arc (in the correct situation of polarity)
It is driven along straight direction and leaves switch contact and enter spark chamber.Herein can happens is that, spark chamber is come in arc quenching plate
In the region for saying common V-notch, magnetic field is since the distance relative to permanent magnet only shows weaker, so that being applied to electric arc
On power in the region before immediately spark chamber entrance very little.In this case can happens is that, electric arc enters significantly slowerly
Spark chamber, this leads to higher energy input, or in the case where least favorable even keep be parked in spark chamber before and not by
Extinguish.
In order to solve this mainly problem in the low current situation less than 150 amperes, it is known from the state of the art
A kind of direct current electric switching system, which generates asymmetric magnetic field, thus not only to arc extinguishing
The direction of chamber drives electric arc, and turns to electric arc with furthermore also transversing to the direction of motion, so as to by electric arc prejudicially to going out
It is driven in the V-notch of the spark chamber in other words of arcs.This DC switchgear with asymmetric magnetic field is for example by European special
2 061 051 B1, EP 1 995 747 of sharp EP is known to B1 or 2 189 996 B1 of EP.
Summary of the invention
Therefore, the technical problem to be solved by the present invention is to provide a kind of with the alternative of alternative direct current arc-control device
, compact electric motor type direct current electric switching system, the direct current arc-control device feature is quickly and securely to extinguish be powered
Switch contact the electric arc that occurs and be easy to change according to possible various applicable cases when opening.
Above-mentioned technical problem is solved by a kind of direct current arc-control device and direct current electric switching system.According to the present invention
, for electric motor type switchgear, particularly for direct current transmission line protective switch direct current arc-control device have spark chamber, institute
Stating spark chamber itself has multiple arc quenching plates for being spaced apart from each other and being arranged parallel to each other.In addition, the arc-control device also has
Electric arc before being immediately follows arranged in spark chamber generates chamber, electric arc generate chamber itself have be directed toward longitudinal mid-plane of spark chamber with
And the permanent magnet in longitudinal direction mid-plane two sides arrangement.According to ground of the invention, arc-control device has odd number band identical herein
The permanent magnet of magnetic characteristic, the permanent magnet are arranged in electric arc along the first direction orthogonal relative to longitudinal mid-plane and generate chamber
Two sides are constituted asymmetrical magnetic field with this.
Electric arc is generated when the switch contact of the energization of switchgear is opened, the electric arc should be driven as quickly as possible into arc extinguishing
In chamber, to make arc extinction there.Orientation due to permanent magnet along first direction in column may be implemented along longitudinal direction, i.e.
The compact structure in the direction of mid-plane along longitudinal direction.Here, permanent magnet along longitudinal direction mid-plane direction immediately follows, i.e. continuously
Before being arranged in spark chamber, so that from the magnetic field that permanent magnet generates towards the direction of spark chamber also to being located immediately at the electricity before spark chamber
Arc applies a significant power.Asymmetrical magnetic field is constituted by using the identical permanent magnet of odd number, the magnetic field is by electric arc volume
Other places deflects and presses in advance between arc quenching plate.In addition, reduce the diversity of component by using identical permanent magnet, with
This can reduce manufacturing cost.
Permanent magnet that is identical by using odd number, being asymmetrically disposed to electric arc generation chamber two sides, is constituted asymmetric
Magnetic field.Because used permanent magnet be all in terms of its magnetism and in terms of its geometric properties it is identical, can reduce
Element diversity.The strategy of this same parts is led to lower storage and logistics cost and is facilitated to make production cost with this
It is lower.
It can wherein be, for example, open circuit using the electric motor type switchgear of direct current arc-control device according to the invention
Device, line protection switch or failure current protection switch, but also may, for example, be switchgear without defencive function,
Such as on-load switch, disconnect switch or load-break switch.The wide side that longitudinal mid-plane is parallel to switchgear herein is fixed
To, and another narrow side is extended up to from a narrow side in a top view.
Similarly, direct current arc-control device according to the invention can be used in switchgear, the so-called double break of dual interruption
In the device of road.It is each arranged in succession two position of the switch in electric wiring electrically coupled in series ground to be interrupted in the dual-breaker,
In, the spark chamber of oneself is arranged in each of two position of the switch.The two spark chambers herein can also along longitudinal direction, i.e. along vertical
It is arranged opposed to each other to the direction of mid-plane.In this arrangement, two switch contacts be located in two spark chambers it
Between.
In being advantageously improved in design scheme for arc-control device according to the invention, the cloth on the first side that electric arc generates chamber
Two permanent magnets are set, only one permanent magnet is arranged in second side opposite with the first side that electric arc generates chamber.
Especially in narrow formula structure, for example, with only one unit point processed (i.e. 1TE, German: Teilungseinheit,
1TE is equivalent to about the width of 18mm) case width column installation equipment in, using three permanent magnets be in structure size and
Still acceptable half-way house between magnetic field strength.However especially in the case where switchgear is bigger also it is possible that in electricity
Arc, which generates, arranges two permanent magnets on the side of chamber, three permanent magnets are arranged on the other side that electric arc generates chamber.First side and
Second side is successively arranged along the first direction orthogonal relative to longitudinal mid-plane herein.
In another favourable improvement scheme of arc-control device according to the invention, generates in chamber and arranged to arc extinguishing in electric arc
The electric arc guide rail that chamber extends.
Direction guiding of the electric arc that the guide rail is used to generate when the switch contact of energization is opened to spark chamber.Logical
Movable contact leaves fixed contact when the switch contact of electricity is opened.With the increase of arc length, arc voltage is always to continue with raising, until
The electric arc guide rail being adjacently positioned shows more favorable potential.At this moment, turn on starting point direction guiding rail of the electric arc on movable contact
It changes, that is jump on the electric arc starting point direction guiding rail, so as to by the direction guiding along guide rail to spark chamber.It is led by using electric arc
Rail keeps arc extinguishing process significantly accelerated, and the breaking capacity of switchgear is significantly improved with this.
In another favourable improvement design scheme of arc-control device according to the invention, along first direction by spark chamber
Arrange at least one other spark chamber, wherein before electric arc generation chamber is arranged in two spark chambers.
In the structure of some multipole switch equipment, multiple switch contact is disposed adjacently.Correspondingly, clear respectively
Multiple spark chambers of one of ground dispensing multiple switch contact are also disposed adjacently.It is in this case it is possible that adjacent at two
Arrange that common electric arc generates chamber before the spark chamber of ground arrangement.This is not only suitable for the structure of some bipolar switchgears, wherein
Longitudinal mid-plane just correspondingly extends through between two spark chambers；It is also applied for the switchgear of quadrupole, wherein
It is just disposed adjacently two spark chambers respectively in the two sides of longitudinal mid-plane.
Electric motor type direct current electric switching system according to the invention is especially designed as direct current transmission line protective switch, has exhausted
Edge material housing, isolating material housing itself have front side, the affixed side opposed with front side and front side and affixed side are connected
Narrow side and wide side.In addition, switchgear according to the invention also has switch contact, switch contact accommodates and is retained on insulation
In material housing, and switch contact itself has fixed contact and relative to the movable movable contact of fixed contact, wherein logical
The switch contact of electricity generates electric arc when opening.Switchgear according to the invention also has the direct current interrupter cartridge of mentioned kind
It sets, which generates chamber with spark chamber and with the electric arc being arranged between switch contact and spark chamber,
The spark chamber has multiple arc quenching plates for being spaced apart from each other and being arranged parallel to each other, and the electric arc, which generates chamber, to be had from switch touching
Point is directed toward longitudinal mid-plane of spark chamber.Here, arranging at least one permanent magnet in the two sides of the longitudinal direction mid-plane.According to
The characteristics of present invention, switchgear is that arc-control device has the permanent magnet of the identical magnetic characteristic of odd number band, the permanent magnet herein
It is arranged with constituting asymmetric magnetic field in the two sides that electric arc generates chamber, so that the permanent magnet is along orthogonal relative to longitudinal mid-plane
First direction limited to the wide side of isolating material housing electric arc generate chamber.
Longitudinal mid-plane orients with being parallel to the wide side of isolating material housing.In bowing for the front side to isolating material housing
In view, longitudinal mid-plane extends up to spark chamber from switch contact, wherein longitudinal mid-plane is substantially by switchgear
Dimidiation.Electric arc generates chamber also by the basic dimidiation of longitudinal mid-plane, wherein permanent magnet is arranged in longitudinal mid-plane
Two sides in the region of the wide side of isolating material housing, and thus electric arc generate chamber limited towards the wide side of isolating material housing
It is fixed.By the asymmetrical arrangement of the substantially the same permanent magnet of odd number, produce asymmetric relative to longitudinal mid-plane
Magnetic field, on the one hand which squeezes the electric arc that occurs when switch contact is opened to the direction of spark chamber, and
And extraly (according to polarity) to the directional steering of one of two wide sides.
Since the normal direction of permanent magnet mid-plane along longitudinal direction is at the orientation of a column, it is able to achieve orthogonal along vertical relative to this
To, the i.e. compact structure in extension direction of the mid-plane from switch contact to spark chamber along longitudinal direction.Here, permanent magnet is as far as possible
Before near-earth is arranged in spark chamber, so that the magnetic field generated by permanent magnet is also given towards the direction of spark chamber before being located immediately at spark chamber
Electric arc apply a significant power.
By using (in terms of its magnetism and in terms of its geometric properties all) identical permanent magnet, the component of very little is realized
Diversity is able to achieve very low storage and logistics cost (and manufacturing cost that very little is realized with this) with this.
It is advantageously improved in design scheme in one kind of switchgear, is by the field orientation that permanent magnet generates, so that
The electric arc occurred when switch contact is opened is squeezed to the direction of spark chamber.
Because permanent magnet generates magnetostatic field, it is certain in direct current electric switching system it is noted that line polarity, so as to
Electric arc is driven along (rather than in reverse direction) is correctly oriented.In principle, the line polarity of this switchgear is therefore labeled
On the outside of isolating material housing.
It is advantageously improved in design scheme in the another kind of switchgear, arrangement is prolonged from switch contact in electric arc generation chamber
It stretches to the electric arc guide rail of spark chamber, the electric arc starting point on movable contact after opening is converted on electric arc guide rail, so as to can quilt
Along guide rail to the direction guiding of spark chamber.
Direction guiding of the electric arc that the guide rail is used to generate when the switch contact of energization is opened to spark chamber.Logical
Movable contact leaves fixed contact when the switch contact of electricity is opened.With the increase of arc length, arc voltage is always to continue with raising, until
The electric arc guide rail being adjacently positioned shows a more favorable potential.At this moment, starting point direction guiding rail of the electric arc on movable contact
Upper conversion, that is jump on the electric arc starting point direction guiding rail, so as to the direction guiding along guide rail to spark chamber.By using electric arc
Guide rail keeps arc extinguishing process significantly accelerated, thus significantly improves the breaking capacity of switchgear.
It is advantageously improved in design scheme in another kind, switchgear multipolar system constructs and other at least one
Switch contact and at least one other spark chamber.Here, the other switch contact is opened along first direction at first
It closes and is received and retained in isolating material housing by contact, the other spark chamber is along first direction by first spark chamber
It is received and retained in isolating material housing.
In the structure of some multipole switch equipment, multiple switch contact is disposed adjacently to one another along first direction.Therewith
Correspondingly, clearly multiple spark chambers of one of dispensing multiple switch contact are also disposed adjacently along first direction respectively.Herein
It is possible that arranging that a common electric arc generates chamber before the spark chamber being disposed adjacently to one another at two in situation.This was both fitted
For the structure of some bipolar switchgears, wherein longitudinal mid-plane just correspondingly extends through between two spark chambers
It crosses；It is also applied for the switchgear of quadrupole, is gone out wherein being just disposed adjacently to one another two respectively in the two sides of longitudinal mid-plane
Arc chamber.
It is advantageously improved in design scheme in another kind, there is the switchgear of multipole at least one other electric arc to lead
Rail, the other electric arc guide rail are received and retained in isolating material housing by first electric arc guide rail along first direction.
The electric arc guide rail for using at least one other makes electric arc quickly import spark chamber, significantly improves switch with this and sets
Standby breaking capacity.Here, being furnished with electric arc guide rail in the ideal case for each switch contact, electric arc guide rail is in each switch
When contact is opened spark chamber from the electric arc that occurs to direct and clear each switch contact of dispensing direction guiding.
It is advantageously improved in design, is at least generated in electric arc on one of two sides of chamber, herein in the another kind of switchgear
At least one permanent magnet at place is arranged in after the side wall of switchgear.
By using the side wall being made of insulating materials, it can effectively prevent electric arc to the permanent magnet being arranged in after side wall
Upper jump.This divides the column installation of the width of unit (TE) processed to set particularly with compact switchgear, for example with only one
Standby to be advantageous, a point of unit processed is equivalent to about 18mm.Side wall can be made of material identical with isolating material housing.?
This is it is possible that side wall is formed on isolating material housing.However this is not Compulsory Feature.Switchgear can certainly
It is respectively provided with side wall in the two sides that electric arc generates chamber, so that being all received, holding and protecting at this in two sides permanent magnet
Side wall after.
Other advantages reference of switchgear according to the invention is related to the excellent of direct current arc-control device according to the invention
The above embodiment of point.
Detailed description of the invention
Direct current arc-control device according to the invention and switch according to the invention are further described with reference to the accompanying drawings
The embodiment of equipment.In attached drawing:
Fig. 1 shows the schematic diagram of the switchgear after opening according to the invention with three-dimensional view；
Fig. 2 is to overlook the cut-away illustration of the switchgear for illustrating Fig. 1；
Fig. 3 shows the detailed schematic to Fig. 2, illustrates direct current arc-control device according to the invention to overlook；
Fig. 4 is shown ... in a side view the cut-away illustration of switchgear (to Fig. 2)；
Fig. 5 shows the detailed schematic to Fig. 4, is shown ... in a side view direct current arc-control device according to the invention；
Fig. 6 and 7 illustrates the schematic diagram of magnetic field strength in the case of symmetrical and asymmetric magnetic field with vertical view.
Identical appended drawing reference is arranged in same parts always in different figures.The explanation can similarly be seen suitable for all
To the attached drawing of corresponding component.
Specific embodiment
Switchgear 1 according to the invention is schematically shown with three-dimensional view in Fig. 1.Fig. 2 is schematically shown with top view
The Section View of switchgear 1 shown in Fig. 1.Switchgear 1 has isolating material housing 2, before isolating material housing 2
Housing parts removed, to realize the observation into switchgear 1 and to show its internal structure in turn.Show in the accompanying drawings
Switchgear 1 out is, for example, that the column of monopole installs equipment, the case width with a point of unit (TE) processed, and one point
Unit processed is equivalent to about the width of 18mm.Here, isolating material housing 2 is designed as half-shell structure mode.But in principle, pole
Quantity (and then size of switchgear 1) and shell structure are not that the present invention is most important, therefore it is also contemplated that other are normal
The shell structure seen.
Affixed side 4 that isolating material housing 2 is relatively arranged with front side 3, with front side 3 in principle and by front side 3 and
The connected narrow side 5 of affixed side 4 and wide side 6 (see Fig. 2 and Fig. 3).It can arrange in the central region of front side 3 and be opened for manually handle
Close the operating element (not shown) of equipment 1.It additionally, there may be the front side subregion 3-1 of two outsides, front side subregion 3-1 is with before
The central region of side 3 respectively constitutes a step towards narrow side 5 with this compared to slightly moving back.Fixation can be installed in affixed side 4
Device, such as lock device (not shown), so that switchgear to be fixed on carrier, such as bearing rail or apical cap type guide rail
On (not shown).
In the region of narrow side 5, isolating material housing 2 is respectively provided with terminal receiving cavity 7, and terminal receiving cavity 7 is designed for
Electric binding terminal (not shown) is accommodated respectively.In order to be contacted with external electrical wiring conductor (not shown), in insulating materials
Construct a connector 8 in the narrow side 5 of each of shell 2 respectively, each wire conductors can be imported into connector 8 and with it is each
Connecting terminal is conductively connected.Because connecting terminal is designed as spiral binding clip in principle, in order to manipulate the connecting terminal,
One is constructed in the region of the front side 3-1 two outsides respectively for screwdriver in order to open and close connecting terminal
The opening 9 passed through.
Isolating material housing 2 shown in FIG. 1 is also generated with spark chamber 20 and the electric arc arranged directly adjacent to one another
Chamber 30.There are contact regions 10 above electric arc generation chamber 30, can install in isolating material housing 2 in contact region 10
The switch contact controllable, relative to the movable movable contact of fixed contact by fixed contact and by switching mechanism.Switching on and shutting down
Structure is mounted in the top area of isolating material housing 2, and really switch contact is located immediately in mounted state
The top of electric arc generation chamber 30.If under voltage, turning on the switch contact in energized state, in fixed contact and from fixed contact
Generate electric arc 11 between the movable contact removed (see Fig. 6 and 7).Therefore, term " electric arc generation chamber " refer in switch contact and
Free space between spark chamber 20, electric arc 11 are generated in the one end in the space, and then electric arc 11 has to pass through the space, so as to
Spark chamber 20 is reached from switch contact.
Fig. 3 shows the detailed schematic to Fig. 2, and schematically shows direct current arc extinguishing according to the invention with top view
Device.Direct current arc-control device includes spark chamber 20, and there are spark chamber 20 multiple sums being spaced apart from each other to be arranged parallel to each other
Arc quenching plate 21.In addition, arc-control device further includes that electric arc generates chamber 30, before electric arc generation chamber 30 is immediately follows arranged in spark chamber 20
Side, and there is the longitudinal mid-plane L for being directed toward spark chamber.In addition, arc-control device also has in the region that electric arc generates chamber 30
There is the identical permanent magnet 31 of odd number.Here, permanent magnet 31 is along the first direction R1 orthogonal relative to longitudinal mid-plane vertical
It is successively arranged to the two sides of mid-plane L, switchgear is able to achieve along the second direction orthogonal relative to first direction with this
The compact structure of R2.
Term " identical " permanent magnet 31 is herein it will be appreciated that permanent magnet 31 is not only in terms of its magnetism, but also at it
It is substantially the same, i.e. in terms of structure size.The polarity of mirror image including two permanent magnets 31 herein, that is to say, that substantially
The same permanent magnet 31 is in the shell that this can be mounted on switchgear with the polarity being mirrored into.
Fig. 4 is shown ... in a side view the cut-away illustration of switchgear 1 (see Fig. 2) according to the invention；Fig. 5 is to Fig. 4
Detailed schematic, and the direct current arc-control device according to the invention in mounted state is shown with related side view；
In the view of Fig. 2 to Fig. 5, two permanent magnetism are arranged in the region of the wide side 6 at the other side on the first side that electric arc generates chamber 30
Body 31, and one is only arranged in the region of opposite wide side 6 in second side opposite with the first side that electric arc generates chamber 30
A permanent magnet 31.But reverse arrangement is also feasible.
In order to protect permanent magnet, permanent magnet is arranged in 32 rear of protection element in two sides, which will forever
Magnet 31 is respectively facing electric arc and generates the shielding of chamber 30, to prevent jump of the electric arc 11 on permanent magnet 32.Protection element 32 is excellent
Choosing is made of plastic material, wherein it is also contemplated that ceramic material.In the case where material is identical, protection element 32 can also be with
It is formed on isolating material housing.This will reduce element diversity, but may make difficult to install.Therefore, pacify to simplify
Advantageously protection element 32 designs be independent component as shown in figure dress.
In order to enable electric arc generates chamber 30 relative to spark chamber 20 (and then relative to isolating material housing 2) symmetrically cloth
It sets, the extraly arrangement interval element 33 on the side for being equipped with only one permanent magnet 31, so that permanent magnet 31 to be reliably held at
On its position.This has the advantage of two half-shells of isolating material housing 2 can equip two permanent magnets 31 in principle.
By shown in Fig. 2 to Fig. 5, two that the permanent magnet 31 of odd number identical type is arranged in that electric arc generates chamber 30
The mode of side constitutes asymmetric magnetic field.Symmetrical magnetic field is being bowed as known to Fig. 3 to Fig. 5 by its magnetic field line 34 in Fig. 6
Depending on being shown schematically in the figure.In contrast, Fig. 7 show it is being generated by permanent magnet 31, electric arc generate chamber 30 region in act as
Asymmetric magnetic field.Asymmetrical magnetic field is to the 11 applied force F of electric arc to burn in the region that electric arc generates chamber 30, so that electric
Not only R2 is pressed against spark chamber 20 to arc 11 in a second direction, but also deflects along first direction R1 with also transversing to second direction.It changes
Sentence is talked about: acting on the magnetic force F on electric arc 11 with the first direction along first direction R1 effect by the sum that permanent magnet 31 generates
Component FR1, first direction component FR1Electric arc 11 is deflected along first direction R1, and has the of R2 effect in a second direction
Two durection component FR2, second direction component FR2Electric arc 11 is squeezed to the direction of spark chamber 20.
Here, showing the path of electric arc 11 by trajectory line B in figure 6 and figure 7: magnetic field shown in Fig. 6 is symmetrical
In situation, electric arc is as the crow flies and medially into the (direction of travel and second direction R2 of electric arc 11 in the V-notch of arc quenching plate 21
Unanimously), in the case where magnetic field shown in Fig. 7 is asymmetric, the additional first direction component of the magnetic force F on electric arc 11 is acted on
FR1Cause, the upper arm deflection of V-notch of the electric arc 11 along curved trajectory line B to arc quenching plate 21.Because of in this case, electric arc
The path of 11 processes is considerably shorter, so electric arc 11 quickly hits arc quenching plate 21, electric arc 11 is divided into multiple at arc quenching plate
It sub- electric arc and is finally off.
In addition, electric arc 11 is significantly greater than in Fig. 6 by the magnetic field shown in magnetic field line 34 in the case where shown in Fig. 7
Shown in symmetric magnetic field situation region in hit arc quenching plate 21, because of electric arc 11 in the symmetric magnetic field situation shown in Fig. 6
In magnetic field, obvious recession just hits arc quenching plate 21 in the bottom of v-shaped notch.Significantly improve in this way electric arc 11 to
Entrance situation in arc quenching plate 21.
Reference signs list:
1 switchgear
2 isolating material housings
3 front sides
Front side outside 3-1
4 affixed sides
5 narrow sides
6 wide sides
7 terminal receiving cavities
8 connectors
9 openings
10 contact areas
11 electric arcs
20 spark chambers
21 arc quenching plates
30 electric arcs generate chamber
31 permanent magnets
32 protection elements
33 spacer elements
34 magnetic field lines
B trajectory line
F power/magnetic force
The longitudinal direction L mid-plane
R1 first direction
R2 second direction
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245182.3A CN114551131A (en) | 2017-07-13 | 2018-07-11 | Direct current arc extinguishing device and motor type direct current switch equipment |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017212033.9 | 2017-07-13 | ||
| DE102017212033.9A DE102017212033A1 (en) | 2017-07-13 | 2017-07-13 | DC arc extinguishing device and electromechanical DC switching device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210245182.3A Division CN114551131A (en) | 2017-07-13 | 2018-07-11 | Direct current arc extinguishing device and motor type direct current switch equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109256291A true CN109256291A (en) | 2019-01-22 |
Family
ID=62196486
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810756225.8A Pending CN109256291A (en) | 2017-07-13 | 2018-07-11 | DC arc extinguishing devices and electromechanical DC switchgear |
| CN202210245182.3A Pending CN114551131A (en) | 2017-07-13 | 2018-07-11 | Direct current arc extinguishing device and motor type direct current switch equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210245182.3A Pending CN114551131A (en) | 2017-07-13 | 2018-07-11 | Direct current arc extinguishing device and motor type direct current switch equipment |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3428942B1 (en) |
| CN (2) | CN109256291A (en) |
| DE (1) | DE102017212033A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785572A (en) * | 2020-07-29 | 2020-10-16 | 贵州天义技术有限公司 | A non-polar high voltage DC contactor arc extinguishing system |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10957504B1 (en) * | 2019-12-30 | 2021-03-23 | Schneider Electric USA, Inc. | Arc chute for circuit protective devices |
| CN113539746B (en) * | 2020-04-20 | 2025-04-15 | 上海电器科学研究所（集团）有限公司 | A DC contactor arc extinguishing and arc blowing device |
| DE102020212619A1 (en) | 2020-10-06 | 2022-04-07 | Siemens Aktiengesellschaft | Fiber matrix semi-finished product for the manufacture of housing parts for circuit breakers |
| CN114121521A (en) * | 2021-11-30 | 2022-03-01 | 中国电子科技集团公司第四十研究所 | A DC switch cavity structure with high service life and its own arc ignition chamber |
| CN114464502B (en) * | 2022-01-07 | 2024-05-17 | 华为数字能源技术有限公司 | DC contactor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5004874A (en) * | 1989-11-13 | 1991-04-02 | Eaton Corporation | Direct current switching apparatus |
| CN201117605Y (en) * | 2007-09-11 | 2008-09-17 | 施耐德电器工业公司 | Breaker |
| CN101312098A (en) * | 2007-05-22 | 2008-11-26 | 施耐德电器工业公司 | Interrupter tube and circuit breaker equipped with such an interrupter tube |
| CN101436495A (en) * | 2007-11-13 | 2009-05-20 | 施耐德电器工业公司 | Arc chamber and circuit breaker equipped with such an arc chamber |
| CN103348430A (en) * | 2010-12-07 | 2013-10-09 | 伊顿电气Ip两合公司 | Switch having a quenching chamber |
| CN203644716U (en) * | 2013-12-26 | 2014-06-11 | 德力西电气有限公司 | Arc-blowing arc-extinguishing device of small direct-current circuit breaker |
| CN204204777U (en) * | 2014-08-13 | 2015-03-11 | 浙江天正电气股份有限公司 | A kind of circuit breaker with Novel arc extinguishing room |
| CN105261502A (en) * | 2015-10-28 | 2016-01-20 | 安德利集团有限公司 | DC circuit breaker arc extinguishing chamber |
| CN205264592U (en) * | 2016-01-11 | 2016-05-25 | 德力西电气有限公司 | Arc control device and have this arc control device's direct current isolator |
| CN206003732U (en) * | 2016-08-30 | 2017-03-08 | 上海雅珥电气有限公司 | A kind of improved hydraulic electromagnetic breaker |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2841004C2 (en) | 1978-09-21 | 1980-10-02 | Licentia Gmbh | Circuit breaker with additional blow loop |
| JPS57170233U (en) * | 1981-04-20 | 1982-10-26 | ||
| DD211668A1 (en) | 1982-11-11 | 1984-07-18 | Elektroinstallation Annaberg V | CIRCUIT PROTECTION SWITCH WITH A CONTACT ASSEMBLY CONSTRUCTING A BLOW LOOP |
| FR2622736B1 (en) * | 1987-10-28 | 1995-04-14 | Merlin Gerin | LOW VOLTAGE CIRCUIT BREAKER, DIRECT CURRENT, AND ARC GUIDING CHEEKS |
| US5982593A (en) | 1998-05-12 | 1999-11-09 | Eaton Corporation | Circuit interrupter with test actuator for ground fault and arc fault test mechanisms |
| FR2938969A1 (en) | 2008-11-21 | 2010-05-28 | Schneider Electric Ind Sas | CUTTING DEVICE FOR CUTTING BIDIRECTIONAL CONTINUOUS CURRENT AND PHOTOVOLTAIC CELL INSTALLATION EQUIPPED WITH SUCH A DEVICE |
| DE102010032715A1 (en) * | 2010-07-29 | 2012-02-02 | Abb Ag | Arc extinguishing device for electric switch mounting device, has plate sections produced by insulation materials arranged between inlet supporting feet to cover inlet supporting feet and longitudinal side edges |
| DE102012212236A1 (en) | 2012-07-12 | 2014-01-16 | Siemens Aktiengesellschaft | Protection switching device and magnetic yoke |
| DE102013211539B4 (en) | 2012-08-31 | 2020-08-06 | Siemens Aktiengesellschaft | Switching mechanism and electromechanical protective switching device |
| US9343251B2 (en) * | 2013-10-30 | 2016-05-17 | Eaton Corporation | Bi-directional direct current electrical switching apparatus including small permanent magnets on ferromagnetic side members and one set of arc splitter plates |
| DE102014202485B4 (en) | 2014-02-12 | 2021-08-05 | Siemens Aktiengesellschaft | Release device |
| DE102014208036A1 (en) | 2014-04-29 | 2015-10-29 | Siemens Aktiengesellschaft | Residual current circuit breaker and mounting method |
| DE102014215007A1 (en) | 2014-07-30 | 2016-02-04 | Siemens Aktiengesellschaft | Protection switching device and magnetic yoke |
| DE102015213375B4 (en) | 2015-07-16 | 2023-06-07 | Siemens Ag | Thermal overload release device and protective switching device |
| DE102015217704A1 (en) | 2015-09-16 | 2017-03-16 | Siemens Aktiengesellschaft | Arc extinguishing device and protective switching device |
-
2017
- 2017-07-13 DE DE102017212033.9A patent/DE102017212033A1/en not_active Withdrawn
-
2018
- 2018-05-17 EP EP18172922.9A patent/EP3428942B1/en active Active
- 2018-07-11 CN CN201810756225.8A patent/CN109256291A/en active Pending
- 2018-07-11 CN CN202210245182.3A patent/CN114551131A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5004874A (en) * | 1989-11-13 | 1991-04-02 | Eaton Corporation | Direct current switching apparatus |
| CN101312098A (en) * | 2007-05-22 | 2008-11-26 | 施耐德电器工业公司 | Interrupter tube and circuit breaker equipped with such an interrupter tube |
| CN201117605Y (en) * | 2007-09-11 | 2008-09-17 | 施耐德电器工业公司 | Breaker |
| CN101436495A (en) * | 2007-11-13 | 2009-05-20 | 施耐德电器工业公司 | Arc chamber and circuit breaker equipped with such an arc chamber |
| CN103348430A (en) * | 2010-12-07 | 2013-10-09 | 伊顿电气Ip两合公司 | Switch having a quenching chamber |
| CN203644716U (en) * | 2013-12-26 | 2014-06-11 | 德力西电气有限公司 | Arc-blowing arc-extinguishing device of small direct-current circuit breaker |
| CN204204777U (en) * | 2014-08-13 | 2015-03-11 | 浙江天正电气股份有限公司 | A kind of circuit breaker with Novel arc extinguishing room |
| CN105261502A (en) * | 2015-10-28 | 2016-01-20 | 安德利集团有限公司 | DC circuit breaker arc extinguishing chamber |
| CN205264592U (en) * | 2016-01-11 | 2016-05-25 | 德力西电气有限公司 | Arc control device and have this arc control device's direct current isolator |
| CN206003732U (en) * | 2016-08-30 | 2017-03-08 | 上海雅珥电气有限公司 | A kind of improved hydraulic electromagnetic breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785572A (en) * | 2020-07-29 | 2020-10-16 | 贵州天义技术有限公司 | A non-polar high voltage DC contactor arc extinguishing system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017212033A1 (en) | 2019-01-17 |
| EP3428942B1 (en) | 2020-07-01 |
| CN114551131A (en) | 2022-05-27 |
| EP3428942A1 (en) | 2019-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109256291A (en) | DC arc extinguishing devices and electromechanical DC switchgear | |
| CN106898530B (en) | Arc extinguishers and safety distribution equipment | |
| RU2581599C2 (en) | Arc blow-out circuit breaker | |
| CN101740274B (en) | Switchgear device and installation with photovoltaic cells equipped with such a device | |
| EP3223293B1 (en) | Electrical switching apparatus, and arc chamber assembly and associated circuit protection method | |
| CN204189671U (en) | Opening and closing device | |
| US8853586B2 (en) | Electrical switching apparatus including magnet assembly and first and second arc chambers | |
| CN112543985A (en) | Switching device and method for operating a switching device | |
| CA2820791A1 (en) | Switch with quenching chamber | |
| CN101377989A (en) | Circuit breaker | |
| CN118398427B (en) | An arc extinguishing system | |
| KR20130000093U (en) | A circuit braker | |
| CN1879183A (en) | Arc quenching system | |
| US10636607B2 (en) | High voltage compact fused disconnect switch device with bi-directional magnetic arc deflection assembly | |
| CN113972118A (en) | Arc extinguishing chamber and switching device | |
| CN104078257B (en) | Switching device | |
| US20090127230A1 (en) | Switching device for direct-current applications | |
| EP2690639A1 (en) | Method and device for breaking electric currents with arc quenching | |
| CN101388308A (en) | Breaker of plastic casing | |
| CN213184178U (en) | Contact mechanism and switching device | |
| CN108122698B (en) | Arc extinguishing device and electromechanical protective switching device | |
| CN102237230B (en) | Double interrupted protective switching device for monitoring circuit | |
| AU2022204661B2 (en) | Miniature circuit breaker | |
| CN102856135B (en) | Double-break protective switching device | |
| RU2371800C2 (en) | Arc control chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190122 |