CN104576162B - Earthed switch contact and the direct acting plug-in type earthed switch with it - Google Patents
Earthed switch contact and the direct acting plug-in type earthed switch with it Download PDFInfo
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- CN104576162B CN104576162B CN201410856032.1A CN201410856032A CN104576162B CN 104576162 B CN104576162 B CN 104576162B CN 201410856032 A CN201410856032 A CN 201410856032A CN 104576162 B CN104576162 B CN 104576162B
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 86
- 230000003068 static effect Effects 0.000 claims abstract description 81
- 238000010891 electric arc Methods 0.000 claims abstract description 46
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical class [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 21
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000005520 electrodynamics Effects 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000002679 ablation Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/18—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
-
- 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
- H01H33/022—Details particular to three-phase circuit breakers
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
A kind of direct acting plug-in type earthed switch the invention provides earthed switch contact and with it.Wherein, earthed switch contact includes：Static side contact electrode and moved end contact electrode, static side contact electrode is fixedly installed, moved end contact electrode along static side contact electrode axially movable setting, and the open position being separated from each other with the conduction position mutually nested with static side contact electrode and with static side contact electrode, earthed switch contact also includes magnetic control means, magnetic control means is configured to moved end contact electrode when open position produces prebreakdown electric arc to conduction position switching, transverse magnetic field or the longitudinal magnetic field parallel to prebreakdown electric arc perpendicular to prebreakdown electric arc can be produced by the electric current of static side contact electrode and moved end contact electrode.Technical scheme can effectively solve the problems, such as that the direct acting plug-in type earthed switch of prior art is difficult to high current and closes.
Description
Technical field
The present invention relates to high-tension switch cabinet apparatus field, in particular to a kind of earthed switch contact and with it
Direct acting plug-in type earthed switch.
Background technology
In power system, the need for earthed switch possesses and has short circuit to close.During earthed switch closing operation, because in system
In the presence of " pre- volt property short trouble " phenomenon, it is desirable to which connecing switch making process can bear to close short-circuit load.According to standard
GB1985-2004 regulations, the E1 grades of earthed switch with short circuit current making capability, no matter how voltage class should undergo 2 times
Short circuit closes operation.For rated voltage 40.5kV and the following E2 grades of earthed switch with short-circuit making current ability, short circuit
Closing number of operations increases to 5 times.
Direct acting plug-in type earthed switch of the prior art, its high current to close effect unsatisfactory, it is difficult to realize to connect
The purpose that ground short circuit is closed.The major measure that improvement earthed switch closes operational capacity at present is to close speed by raising to drop
Low prebreakdown is opened and opened away to puncture clearance between open contacts during generation away from, prebreakdown, and prebreakdown is opened away from bigger, and the arc time is more long, electricity
Arc energy is bigger, and the possibility for successfully closing is lower.But the method requirement earthed switch that above-mentioned raising closes speed need to be configured more
High-output and low-resistance operating mechanism.Ground connection closes just realizes the requirement that short circuit is closed when speed reaches the velocity interval of more than 5m/s, this
It is difficult to realize for only there is the direct acting plug-in type earthing switch operating mechanism of general operation work(.
The content of the invention
It is a primary object of the present invention to provide a kind of earthed switch contact and direct acting plug-in type earthed switch with it,
High current is difficult to the direct acting plug-in type earthed switch for solving the problems, such as prior art to close.
To achieve these goals, according to an aspect of the invention, there is provided a kind of earthed switch contact, including：It is quiet
End contact electrode and moved end contact electrode, static side contact electrode is fixedly installed, moved end contact electrode along static side contact electrode axle
To moveable setting, and mutually divide with the conduction position mutually nested with static side contact electrode and with static side contact electrode
From open position, earthed switch contact also includes magnetic control means, and magnetic control means is configured to moved end contact electrode by open position
When producing prebreakdown electric arc to conduction position switching, can be produced by the electric current of static side contact electrode and moved end contact electrode vertical
Directly in the transverse magnetic field or the longitudinal magnetic field parallel to prebreakdown electric arc of prebreakdown electric arc.
Further, magnetic control means includes multiple first groovings and multiple second groovings, and multiple first groovings are arranged on quiet
Hold on the side wall of contact electrode and for changing the sense of current, multiple second groovings are arranged on the side wall of moved end contact electrode simultaneously
For changing the sense of current, multiple first groovings and multiple second groovings.
Further, the first grooving includes the first helicla flute, and the direction that the first helicla flute is arranged on static side contact electrode is moved
One end of contact electrode is held, the second grooving includes the second helicla flute, and the direction that the second helicla flute is arranged on moved end contact electrode is quiet
Hold one end of contact electrode.
Further, the first helicla flute and the second helicla flute have identical rotation direction.
Further, the first grooving also includes the first guiding gutter corresponding with the first helicla flute, and the first guiding gutter is arranged on
On the side wall of static side contact electrode and along the axially extending of static side contact electrode, one end of the first helicla flute and the first guiding gutter
One end connects and the first guiding gutter is arranged on the one end of the first helicla flute away from moved end contact electrode.
Further, the second grooving also includes the second guiding gutter corresponding with the second helicla flute, and the second guiding gutter is arranged on
On the side wall of moved end contact electrode and along the axially extending of moved end contact electrode, one end of the second helicla flute and the second guiding gutter
One end connects and the second guiding gutter is arranged on the one end of the second helicla flute away from static side contact electrode.
Further, the first helicla flute and the second helicla flute have identical lead angle.
Further, static side contact electrode is quiet conductive tube.
Further, the side wall of multiple first grooving insertion static side contact electrodes is with by the side wall of static side contact electrode points
It is cut into multiple first baffles, moved end contact electrode also includes inner cylinder, the side of multiple second grooving insertion moved ends contact electrode
Wall is will be divided into multiple second baffles on the side wall of moved end contact electrode.
According to another aspect of the present invention, there is provided a kind of direct acting plug-in type earthed switch, including earthed switch contact, connect
Ground switch contact is above-mentioned earthed switch contact.
Apply the technical scheme of the present invention, magnetic control means is provided with earthed switch contact, magnetic control means is configured to move
Contact electrode is held when open position produces prebreakdown electric arc to conduction position switching, by static side contact electrode and moved end contact
The electric current of electrode produces the transverse magnetic field or the longitudinal magnetic field parallel to prebreakdown electric arc perpendicular to prebreakdown electric arc.In moved end
The transverse magnetic field or longitudinal magnetic field produced between contact electrode and static side contact electrode, and then transverse magnetic field or longitudinal magnetic field docking
Prebreakdown electric arc producer transverse direction magnetic blow-out effect or longitudinal magnetic blow-out effect when ground is closed.Wherein horizontal magnetic blow-out effect can make
Obtain prebreakdown electric arc and run arc motion in the quick circumference of contact surface, reduce the concentration ablation of contact, it is to avoid when high current is closed
Because of contact melting welding caused by contact local surfaces over hot melting, arc energy is reduced, while suppressing arc constriction, reduction is closed
Electrodynamic repulsion force.Longitudinal magnetic blow-out effect can suppress prebreakdown arc constriction, reduce prebreakdown arc energy, mitigate prebreakdown electric arc
Switching devices arc erosion, and then improve folding ability of the earthed switch to high current.The transverse magnetic field that magnetic control means is produced
Can reduce prebreakdown arc energy with longitudinal magnetic field, so reduce earthed switch close rate request, make earthed switch
It is more prone to realize that high current is closed.Therefore technical scheme can effectively solve the direct acting plug-in type of prior art
Earthed switch is difficult to the problem that high current is closed.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：
Fig. 1 shows the structural representation of the embodiment of earthed switch contact of the invention；
Fig. 2 shows the schematic perspective view of the static side contact electrode of the earthed switch contact of Fig. 1；
Fig. 3 shows the elevational schematic of the static side contact electrode of Fig. 2；
Fig. 4 shows the schematic perspective view of the moved end contact electrode of the earthed switch contact of Fig. 1；
Fig. 5 shows the elevational schematic of the moved end contact electrode of Fig. 4；
Current direction and magnetic when Fig. 6 shows that the earthed switch contact of Fig. 1 descends prebreakdown electric arc to produce in working order
Field control schematic diagram；
Fig. 7 shows that the earthed switch contact of Fig. 6 produces the principle schematic of longitudinal magnetic field；
Fig. 8 shows the structural representation of the embodiment of direct acting plug-in type earthed switch of the invention.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, static side contact electrode；11st, quiet conductive tube；12nd, the first baffle；20th, moved end contact electrode；21st, inner cylinder；22、
Second baffle；30th, magnetic control means；31st, the first grooving；311st, the first helicla flute；312nd, the first guiding gutter；32nd, the second grooving；
321st, the second helicla flute；322nd, the second guiding gutter.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In the prior art, the contact design of traditional direct acting plug-in type earthed switch also lacks the magnetic to electrode contact gap
Consideration to prebreakdown electric arc influence, fails for the magnetic blow-out effect in magnetic field to be successfully applied to earthed switch to close in operation, connects
Ground switchs and successfully close short circuit current difficulty is still present.
To the magnetic blow-out effect of electric arc be applied in direct insertion earthed switch in magnetic field first by present inventor.By magnetic
Field control technology produces horizontal magnetic blow-out effect or longitudinal magnetic blow-out effect to prebreakdown electric arc, reduces prebreakdown arc energy, mitigation
Prebreakdown electric arc switching devices arc erosion, and then improve folding ability of the earthed switch to high current.
Shown in Fig. 1, the earthed switch contact of the present embodiment includes：Static side contact electrode 10, moved end contact electrode 20 and
Magnetic control means.Static side contact electrode 10 is fixedly installed, and moved end contact electrode 20 is along the axially movable of static side contact electrode 10
Set, and it is with the conduction position mutually nested with static side contact electrode 10 and disconnected with what static side contact electrode 10 was separated from each other
Open position.Earthed switch contact also includes magnetic control means 30, and magnetic control means 30 is configured to moved end contact electrode 20 by open position
When producing prebreakdown electric arc to conduction position switching, can be produced by the electric current of static side contact electrode 10 and moved end contact electrode 20
The raw longitudinal magnetic field parallel to prebreakdown electric arc.
Using the technical scheme of the present embodiment, magnetic control means 30 is provided with earthed switch contact, magnetic control means 30 is matched somebody with somebody
Moved end contact electrode 20 is set to when open position produces prebreakdown electric arc to conduction position switching, by static side contact electrode 10
The longitudinal magnetic field parallel to prebreakdown electric arc is produced with the electric current of moved end contact electrode 20.Touched in moved end contact electrode 20 and static side
Longitudinal magnetic field is produced between tip electrode 10, prebreakdown electric arc produces longitudinal magnetic blow-out effect when longitudinal magnetic field is closed to earthed switch.
Longitudinal magnetic blow-out effect can suppress prebreakdown arc constriction, reduce prebreakdown arc energy, mitigate prebreakdown electric arc and switch is set
Standby arc erosion, and then improve folding ability of the earthed switch to high current.Therefore technical scheme can be effective
Solve the problems, such as that the direct acting plug-in type earthed switch of prior art is difficult to high current and closes.
In implementation method not shown in figure, magnetic control means can also static side contact electrode and moved end contact electrode it
Between produce transverse magnetic field perpendicular to prebreakdown electric arc.Transverse magnetic field can produce horizontal magnetic blow-out effect to prebreakdown electric arc.It is horizontal
Enable to prebreakdown electric arc to run arc in the quick circumference of contact surface to magnetic blow-out effect to move, reduce the concentration ablation of contact,
Because of contact melting welding caused by contact local surfaces over hot melting when avoiding high current from closing, arc energy is reduced, while suppressing
Arc constriction, reduction closes electrodynamic repulsion force.
In the present embodiment, the contact jaw of static side contact electrode 10 and moved end contact electrode 20 is welded with contact blade.Touch
Head piece is made of resistance to ablation Tungsten-copper Composites, and can partly keep out produced between static side contact electrode 10 and moved end contact electrode 20
Prebreakdown electric arc ablation, and then improve the ability that is closed to high current of earthed switch.
As shown in Figures 2 to 5, in the technical scheme of the present embodiment, magnetic control means 30 includes multiple Hes of first grooving 31
Multiple second groovings 32, multiple first groovings 31 are arranged on the side wall of static side contact electrode 10 and for changing the sense of current.
Multiple second groovings 32 are arranged on the side wall of moved end contact electrode 20 and for changing the sense of current, multiple Hes of first grooving 31
Multiple second groovings 32.First grooving 31 and the second grooving 32 are used for changing flowing through static side contact electrode 10 and moved end contact electrode
20 current direction, and then cause that electric current produces cross stream component and longitudinal component.The cross stream component of electric current interacts in ground connection
The contact gap of switch produces the longitudinal magnetic field parallel to prebreakdown current, and then longitudinal magnetic blow-out effect is produced to prebreakdown current
Should.
As shown in Figures 2 and 3, in the technical scheme of the present embodiment, the first grooving 31 includes the first helicla flute 311, the
One helicla flute 311 is arranged on one end towards moved end contact electrode 20 of static side contact electrode 10, and the second grooving 32 includes second
Helicla flute 321, the second helicla flute is arranged on one end towards static side contact electrode of moved end contact electrode.
During earthed switch is closed, the distance between static side contact electrode 10 and moved end contact electrode 20 are increasingly
It is small, cause when cannot bear additional voltage, the breakdown product in gap between static side contact electrode 10 and moved end contact electrode 20
Raw prebreakdown electric arc, prebreakdown electric arc flows through static side contact electrode 10 and moved end contact electrode 20 produces prebreakdown arc current.
When prebreakdown arc current flows through static side contact electrode 10 and moved end contact electrode 20, due to there is the first helicla flute 311 and second
The presence of helicla flute 321 so that prebreakdown arc current is changed flow direction.Breakdown current produces prebreakdown electricity after being redirected
The horizontal component and vertical component of arc current, in prebreakdown arc current component and moved end contact that static side contact electrode 10 is produced
The prebreakdown arc current component that electrode 20 is produced interacts, so static side contact electrode 10 and moved end contact electrode 20 it
Between gap produce longitudinal magnetic field.
In the present embodiment, the width of the first helicla flute and the second helicla flute, height, spiral corner, the hand of spiral, uniform
Number is not fixed, and these factors will influence the magnetic field in the magnetic field in the gap between static side contact electrode 10 and moved end contact electrode 20 strong
Degree, and ring the eddy current on static side contact electrode 10 and the surface of moved end contact electrode 20.
The concrete form of the first grooving 31 and the second grooving 32 is not limited to helicla flute, and the first grooving 31 and the second grooving 32 are same
Sample can using other forms such as straight trough and translot combination, as long as can meet when have prebreakdown electric arc generation when, first
The grooving 32 of grooving 31 and second can be between static side contact electrode 10 and moved end contact electrode 20 gap produce it is horizontal or vertical
To magnetic field.
As shown in Figures 2 to 6, in the present embodiment, the first helicla flute 311 and the second helicla flute 321 revolve with identical
To, therefore when prebreakdown arc current passes through the first helicla flute 311 and the second helicla flute 321, prebreakdown arc current is quiet
On end contact electrode 10 and moved end contact electrode 20 there is rotation direction identical to flow to.Therefore prebreakdown arc current is in static side contact
Electrode 10 is identical with the horizontal component direction of moved end contact electrode 20, and then the horizontal component of prebreakdown arc current is touched in static side
Gap between tip electrode 10 and moved end contact electrode 20 produces a longitudinal magnetic field Ba parallel to prebreakdown electric arc.
Shown in Fig. 7, the formation basic theory of longitudinal magnetic field Ba can also bring explanation from current phasor change.Flow through static side contact electricity
The arc current I1 of pole 10 can be analyzed to cross stream component I1t and longitudinal component I1a, similarly, flow through the electric arc of moved end contact electrode
Electric current I2 is decomposed into cross stream component I2t and longitudinal component I2a.Gap between static side contact electrode 10 and moved end contact electrode 20
Vector is Ba parallel to gap direction downward magnetic field to be produced one by the collective effect of I1t and I2t magnetic effect of electric current,
As parallel to the longitudinal magnetic field of gap prebreakdown electric arc.Additionally, when arc current side in prebreakdown arc current direction with Fig. 7
To it is opposite when, longitudinal magnetic field Ba directions are changed into upward, but vector size is constant.
Longitudinal magnetic field is specially to the magnetic blow-out effect of prebreakdown electric arc：Longitudinal magnetic field can suppress the receipts of prebreakdown electric arc
Contracting, increases arc column radius, makes prebreakdown electric arc be easier to remain diffusion morphotype formula, when current spread causes that earthed switch is closed
Electrodynamic repulsion force is significantly reduced.Simultaneously under longitudinal magnetic field magnetic blow-out effect, the reduction of prebreakdown arc voltage, arc energy reduces, quiet
End contact electrode 10 and moved end contact 20 ablated surfaces of electrode are slighter, it is to avoid static side contact electrode 10 when high current is closed
With the melting welding of moved end contact electrode 20.
As shown in Figures 2 to 5, in the technical scheme of the present embodiment, the first helicla flute 311 and the second helicla flute 321 have
There is identical lead angle, be easy to technique to process.
As shown in Figure 2 to Figure 3, in the technical scheme of the present embodiment, static side contact electrode 10 is the structure of quiet conductive tube 11.
Static side contact electrode 10 is fixedly installed, and moved end contact electrode 20 is arranged on the surface of static side contact electrode 10, and moved end is touched
Tip electrode 20 can be moved up and down axially.When earthed switch completes to close operation, moved end contact electrode 20 is tactile towards static side
Tip electrode 10 is moved, and moved end contact electrode 20 is arranged in quiet conductive tube 11, realizes that moved end contact electrode 20 and static side are touched
The contact conducting of tip electrode 10.
As shown in Figures 2 to 5, in the technical scheme of the present embodiment, the insertion static side contact electrode of multiple first groovings 31
10 side wall is will be divided into multiple first baffles 12 on the side wall of static side contact electrode 10.The also bag of moved end contact electrode 20
Include inner cylinder 21, the side wall of the insertion moved end contact electrode 20 of multiple second groovings 32 on the side wall of moved end contact electrode 20 will split
Into multiple second baffles 22.The electric current of moved end contact electrode 20 and static side contact electrode 10 is flowed through along the He of the first baffle 12
The direction movement of the second baffle 22, and produce current component.
Additionally, when earthed switch closes a floodgate, because static side contact electrode 10 and moved end contact electrode 20 are by the first grooving 31
Multiple first baffles 12 and multiple second baffles 22 are divided into with the second grooving 32, and then moved end contact electricity can be born
Pole 20 is wearing the mechanically deform of the static side contact electrode 10 into during quiet conductive tube 11, and sound is touched when increase earthed switch closes a floodgate
The electrical-contact area of head, reduces contact resistance, while reduction closes electrodynamic repulsion force.
As shown in figure 8, present invention also provides a kind of direct acting plug-in type earthed switch, including earthed switch contact, ground connection
Switch contact is above-mentioned earthed switch contact.
Inserted in direct acting and be provided with magnetic control means 30 on formula earthed switch contact, magnetic control means 30 is configured to moved end contact electrode
20 when open position produces prebreakdown electric arc to conduction position switching, by static side contact electrode 10 and moved end contact electrode 20
Electric current produce parallel to prebreakdown electric arc longitudinal magnetic field.Produced between moved end contact electrode 20 and static side contact electrode 10
Longitudinal magnetic field, prebreakdown electric arc produces longitudinal magnetic blow-out effect when longitudinal magnetic field is closed to earthed switch.Longitudinal magnetic blow-out effect can
Suppress prebreakdown arc constriction, reduce prebreakdown arc energy, mitigate prebreakdown electric arc switching devices arc erosion, Jin Erti
Folding ability of the earthed switch high to high current.
In implementation method not shown in figure, can also be in static side contact electrode and moved end contact electrode in magnetic control means
Between produce transverse magnetic field perpendicular to prebreakdown electric arc.Transverse magnetic field can produce horizontal magnetic blow-out effect to prebreakdown electric arc.
Horizontal magnetic blow-out effect enables to prebreakdown electric arc to run arc motion in the quick circumference of contact surface, and the concentration for reducing contact is burnt
Erosion, it is to avoid because of contact melting welding caused by contact local surfaces over hot melting when high current is closed, reduces arc energy, while suppression
Arc constriction processed, reduction closes electrodynamic repulsion force.And then improve the ability that the direct insertion earthed switch of direct acting closes high current.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of earthed switch contact, including：Static side contact electrode (10) and moved end contact electrode (20), the static side contact electricity
Pole (10) is fixedly installed, the moved end contact electrode (20) along the static side contact electrode (10) axially movable setting,
And with the conduction position mutually nested with the static side contact electrode (10) and with the static side contact electrode (10) mutually
The open position of separation, it is characterised in that the earthed switch contact also includes magnetic control means (30), the magnetic control means (30)
The moved end contact electrode (20) is configured to when open position produces prebreakdown electric arc to conduction position switching, by institute
The electric current for stating static side contact electrode (10) and the moved end contact electrode (20) can be produced perpendicular to the prebreakdown electric arc
Transverse magnetic field or the longitudinal magnetic field parallel to the prebreakdown electric arc,
The magnetic control means (30) includes multiple first groovings (31) and multiple second groovings (32), the multiple first grooving
(31) it is arranged on the side wall of the static side contact electrode (10) and for changing the sense of current, the multiple second grooving (32)
It is arranged on the side wall of the moved end contact electrode (20) and for changing the sense of current,
The side wall of static side contact electrode (10) described in the insertion of the multiple first grooving (31) is with by the static side contact electrode
(10) multiple first baffles (12) are divided on side wall, the moved end contact electrode (20) also includes inner cylinder (21), described
The side wall of moved end contact electrode (20) described in multiple second grooving (32) insertions is with by the side wall of the moved end contact electrode (20)
On be divided into multiple second baffles (22),
The contact jaw of the static side contact electrode (10) and the moved end contact electrode (20) is welded with contact blade, the contact
Piece is made of Tungsten-copper Composites.
2. earthed switch contact according to claim 1, it is characterised in that first grooving (31) includes the first spiral
Groove (311), first helicla flute (311) is arranged on the direction moved end contact electrode of the static side contact electrode (10)
(20) one end, second grooving (32) includes the second helicla flute (321), and second helicla flute is arranged on the moved end and touches
One end of the direction static side contact electrode (10) of tip electrode.
3. earthed switch contact according to claim 2, it is characterised in that first helicla flute (311) and described
Two helicla flutes (321) are with identical rotation direction.
4. earthed switch contact according to claim 3, it is characterised in that first grooving (31) also include with it is described
Corresponding first guiding gutter (312) of first helicla flute (311), first guiding gutter (312) is arranged on the static side contact electricity
On the side wall of pole (10) and along the axially extending of the static side contact electrode (10), one end of first helicla flute (311) with
One end of first guiding gutter (312) connects and first guiding gutter (312) is arranged on first helicla flute (311)
Away from one end of the moved end contact electrode (20).
5. earthed switch contact according to claim 2, it is characterised in that second grooving (32) also include with it is described
Corresponding second guiding gutter (322) of second helicla flute (321), second guiding gutter (322) is arranged on the moved end contact electricity
On the side wall of pole (20) and along the axially extending of the moved end contact electrode (20), one end of second helicla flute (321) with
One end of second guiding gutter (322) connects and second guiding gutter (322) is arranged on second helicla flute (321)
Away from one end of the static side contact electrode (10).
6. earthed switch contact according to claim 2, it is characterised in that first helicla flute (311) and described
Two helicla flutes (321) are with identical lead angle.
7. earthed switch contact according to claim 1, it is characterised in that the static side contact electrode (10) is quiet conduction
Cylinder (11).
8. a kind of direct acting plug-in type earthed switch, including earthed switch contact, it is characterised in that the earthed switch contact is power
Profit requires the earthed switch contact any one of 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410856032.1A CN104576162B (en) | 2014-12-31 | 2014-12-31 | Earthed switch contact and the direct acting plug-in type earthed switch with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410856032.1A CN104576162B (en) | 2014-12-31 | 2014-12-31 | Earthed switch contact and the direct acting plug-in type earthed switch with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104576162A CN104576162A (en) | 2015-04-29 |
| CN104576162B true CN104576162B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410856032.1A Active CN104576162B (en) | 2014-12-31 | 2014-12-31 | Earthed switch contact and the direct acting plug-in type earthed switch with it |
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| CN104241016A (en) * | 2013-06-05 | 2014-12-24 | 株式会社日立制作所 | Gas insulated switchgear |
| CN204464154U (en) * | 2014-12-31 | 2015-07-08 | 北京双杰电气股份有限公司 | Grounding switch contact and direct-acting plug-in grounding switch with same |
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| JP2013164994A (en) * | 2012-02-10 | 2013-08-22 | Toshiba Corp | Gas circuit breaker |
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| US5055639A (en) * | 1989-05-10 | 1991-10-08 | Sachsenwerk Aktiengesellschaft | Contact arrangement for a vacuum switch |
| CN1384514A (en) * | 2001-05-09 | 2002-12-11 | 株式会社明电舍 | Electrode for vacuum breaker and its making process |
| CN2540020Y (en) * | 2002-05-31 | 2003-03-12 | 唐嘉隆 | Vacuum arc-extinguishing chamber for circuit breaker |
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| CN104241016A (en) * | 2013-06-05 | 2014-12-24 | 株式会社日立制作所 | Gas insulated switchgear |
| CN204464154U (en) * | 2014-12-31 | 2015-07-08 | 北京双杰电气股份有限公司 | Grounding switch contact and direct-acting plug-in grounding switch with same |
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| CN104576162A (en) | 2015-04-29 |
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