CN110402475A - With the high-voltage circuit breaker for improving robustness - Google Patents
With the high-voltage circuit breaker for improving robustness Download PDFInfo
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- CN110402475A CN110402475A CN201880015368.1A CN201880015368A CN110402475A CN 110402475 A CN110402475 A CN 110402475A CN 201880015368 A CN201880015368 A CN 201880015368A CN 110402475 A CN110402475 A CN 110402475A
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- relay unit
- contact portion
- central axis
- relative
- nozzle
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- 230000011218 segmentation Effects 0.000 claims abstract description 17
- 238000007664 blowing Methods 0.000 claims abstract description 6
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- 230000013011 mating Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 3
- 229910052731 fluorine Inorganic materials 0.000 description 14
- 239000011737 fluorine Substances 0.000 description 14
- -1 fluorine amine Chemical class 0.000 description 14
- 238000010891 electric arc Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
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- 229910052799 carbon Inorganic materials 0.000 description 3
- 150000002825 nitriles Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 241000722921 Tulipa gesneriana Species 0.000 description 2
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- 230000015556 catabolic process Effects 0.000 description 2
- LRDFRRGEGBBSRN-UHFFFAOYSA-N isobutyronitrile Chemical compound CC(C)C#N LRDFRRGEGBBSRN-UHFFFAOYSA-N 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
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- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
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- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 description 1
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- 125000000876 trifluoromethoxy group Chemical group FC(F)(F)O* 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
- H01H33/703—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/38—Plug-and-socket contacts
- H01H1/385—Contact arrangements for high voltage gas blast circuit breakers
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
-
- 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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/91—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism the arc-extinguishing fluid being air or gas
Landscapes
- Circuit Breakers (AREA)
Abstract
Relay unit (1) for air-blowing circuit-breaker has central axis A, and includes: the first contact portion (10) with starting the arc contact portion (12)；The second contact portion (20) including cylindrical shaft (22) and pin-style contact portions (25)；Fixed to the first contact portion (10) and there is the surround starting the arc contact portion (12) first insulation nozzle (30) for being segmented (32), intermediate cylindrical segmentation (34) and bifurcated segmentation (36).Compressed gas is directed in starting the arc area (50) by the heating channel (40) with the circumferential opening (42) led in nozzle (30) during the opening operation of relay unit (1).In the circumferential opening (42) of heating channel (40), heating the circumferential edges region (46) between the first side wall (60) of channel (40) and the wall of cylindrical nozzle segmentation (34) includes at least one edge (47) with the at most Envelope radius of 2 mm.
Description
Technical field
Theme described herein relates generally to gas insulated high voltage circuit-breaker, and relates more particularly to needle
To the circuit-breaker of the improvement robustness of the propagation of electrical breakdown.
Background technique
Cause circuit-breaker can in the increase of the size of electrical power transmission network experienced over the past several decades
The increase of the maximum interruptive current (also referred to as short circuit current) of security interrupt.In particular, disconnected based on gas isolated high-tension circuit
Road device (that is, being suitable for high-voltage applications) is due to the ability of the high current between the contact portion of their security interrupt circuit-breaker
It is well-known.In gas-insulated circuit breaker, the gas of such as sulfur hexafluoride is for extinguishing the generation when electric current is interrupted
Electric arc.As a result, during interruption, electric arc develops between starting the arc contact portion (arcing contact), and wherein electric arc is at it
The geometric areas of middle development is typically insulated nozzle encirclement.Nozzle is also typically used as guidance gas stream for extinguishing or putting out electricity
Arc.Gas usually passes through private access in nozzle as a result, end is come close to the heating channel of starting the arc area (arcing zone)
It is guided.Therefore, gas is led directly on the electric arc of development.
It is potentially prone to sometimes in circuit-breaker into the electrical breakdown during the interrupt operation in heating channel.This is not
Desired behavior.
1218906 B1 of EP discloses a kind of high-voltage circuit breaker, wherein the first arc contacts piece and gas flow pass
The distance between secondth area is greater than the double diameter in the channel in the firstth area of gas flow pass.US 2015/021297 A1
A kind of open circuit-breaker with quenching (quenching) gas, wherein compression chamber's outflow restricted area and nozzle outflow
The ratio of restricted area is less than 1.1:1.19936987 C1 of DE discloses a kind of high-voltage switch gear, and wherein the radius of curvature of electrode is specific
Ground is less than the radius of curvature for being in arc contacts tip corresponding thereto.
In view of content above and due to other reasons, exist to needs of the invention.
Summary of the invention
A kind of relay unit for air-blowing circuit-breaker with central axis A is provided.Relay unit includes:
One contact portion, first contact portion have starting the arc contact portion；Second contact portion, second contact portion include circle
Axis of a cylinder and pin-style contact portions；Nozzle, the nozzle include insulating materials and are fixed to the first contact portion, the nozzle tool
Have encirclement starting the arc contact portion first is segmented, intermediate cylindrical segmentation and bifurcated are segmented, and wherein provides and heat channel, described to add
The passage of heat has the circumferential opening led in nozzle, to be directed to compressed gas during the opening operation of relay unit
In area between starting the arc contact portion and pin-style contact portions.In the region of the circumferential opening in heating channel, towards the second contact portion
There are circumferential edges regions between the wall that the cylinder of the first side wall and nozzle that divide the heating channel of orientation is segmented, and wherein justify
Circumferential edges region includes at least one edge of the Envelope radius (it also may be referred to effective radius) with up to about 2 mm.
By dependent claims, claim combinations, description and attached drawing, additional aspects of the present invention, advantages and features are
Obviously.
Detailed description of the invention
More particularly statement is to those skilled in the art in the rest part of this specification for including reference to attached drawing
Comprehensive and enabled disclosure of member, including its optimal mode, in which:
Fig. 1 shows electric discharge step (step) length of the electric arc in relay unit relevant to gas pressure and applied voltage
Diagram；
Fig. 2 shows the signal partial cross-sectional views of the relay unit according to the embodiment for circuit-breaker；
Fig. 3 shows the detailed partial cross-sectional view of the relay unit of Fig. 2 according to the embodiment；
Fig. 4 shows the detailed partial cross-sectional view of the relay unit as shown in Figure 2 according to additional embodiment；
Fig. 5 shows horizontal according to the detailed part of the other relay unit as shown in Figure 2 of additional embodiment also
Section view；
Fig. 6 is shown to be regarded according to the detailed partial cross-section of the other relay unit as shown in Figure 2 of additional embodiment
Figure.
Specific embodiment
Various embodiments will be carried out now referring in detail to one or more examples of various embodiments are in each attached drawing
It is illustrated.Each example is provided by way of explanation, and is not intended as limiting.For example, the portion as one embodiment
Illustrated in point or described feature can be used in other embodiments or be used in conjunction with other embodiments, to produce
It survives the additional embodiment having.Being intended that the disclosure includes such modifications and variations.
Interior in being described below for attached drawing, same reference numerals refer to same components.Generally, it only describes about each implementation
The difference of example.
As used herein, nominal current passes through the electrical contacts of the relay unit in circuit-breaker by it
Referred to as main contact portion or Nominal contact portion, and hereafter the combination of main contact portion and starting the arc contact portion is referred to as that " breaker connects
Contact portion " or " moving contact portion ".Circuit-breaker includes that two breakers respectively including main contact portion and starting the arc contact portion connect
Contact portion or moving contact portion.In general, one of starting the arc contact portion is configured to hollow type, also referred to as tulip formula, and another
Arc contact portion is configured to pin-style contact portions.
Embodiments described herein includes for interrupting between the first breaker contacts portion and the second breaker contacts portion
Electric current gas insulated high voltage circuit-breaker.Breaker contacts portion is generally suitable for for circuit-breaker being electrically interconnected to will quilt
The circuit of protection.According to embodiment herein, high voltage is at least about 70 kV or higher voltage.Such as this specification and
Used in claim, " high-voltage circuit breaker " is to be rated for at least about electricity of 70 kV or higher nominal voltage
Circuit breaker.
In gas circuit breaker, arc extinction medium includes gas.In general, circuit-breaker includes limiting gas
The encapsulating housing of volume.In addition, circuit-breaker generally includes air-blowing system, the air-blowing system configuration is grasped in current interruptions
The electricity formed between the first starting the arc contact portion and second or mating starting the arc contact portion of blanking circuit breaker during the stage of work
Arc.As a result, during interrupt operation, electric arc is substantially and generally along the central symmetry axis of relay unit and flat with it
Row ground develops in the starting the arc area between two starting the arc contact portions.Compressed gas is directed into two starting the arc via heating channel and connects
In starting the arc area between contact portion.Heating channel is configured to have opening, described to be open substantially or at least partially circumferentially
Extend around starting the arc area, so that being flowed into from the gas that the substantially or at least partially annular circumferential around starting the arc area is open
In arc area.It can also be by the way that heating channel opening into starting the arc area be formed circumferentially around the hole of starting the arc area arrangement in some way
Mouthful.
During the interrupt operation of rule, electric arc is in the direction substantially parallel with the longitudinal axis or central axis of relay unit
Upper development, and generally extend between two starting the arc contact portions.However, the undesirable state during interrupt operation
In, usually the electric arc that pin-style contact portions start alternatively travel to heating channel opening in and propagate further into plus
In the passage of heat.This is due to the requirement to circuit-breaker but does not allow, and can lead to unexpected behavior or failure.
Inventor's inspected can for example puncture (restrike) development, electric arc from prebreakdown (prestrike) or again
The evolution of undesirable propagation as into heating channel, and developed to a solution to this problem.
Generally, in embodiment, electric arc propagating into heating channel can be by the spray of the opening in heating channel
Certain configuration of fringe region between the inner sidewall of mouth and the first side wall for heating channel is suppressed or avoids.Namely
It says, according to embodiment, fringe region has certain properties.In some embodiments, edge is configured to have less than 2 mm, preferably
Ground is equal to or less than the relatively small effective radius or precise radius of 1.5 mm or 1.0 mm.The radius at edge can also be by having
At least two flat sections continuously arranged of the gradient that the longitudinal axis relative to relay unit increases are configured (transversal
In the view of face, thus form effective radius or Envelope radius), rather than have substantially a quarter circle shape (transversal
In the view of face, thus form precise radius).
In some embodiments, fringe region includes the sequence for collectively forming a kind of step of ladder.In the first example,
Step respectively includes being segmented with the end section of the first side wall relative to heating channel and/or the cylinder relative to nozzle
The flighting (step segment) of side wall alternately substantially parallel and generallyperpendicular orientation.It is parallel and vertical as a result,
It may include the relatively wide range of tolerable variance for angle, this is further shown below.In the second example, step respectively wraps
Include the flighting with the orientation relative to central axis A alternately generally diametrically and axially substantially.In embodiment, substantially
On be in parallel it is parallel or exactly parallel, generallyperpendicular is vertical or precise perpendicularity, be generally diametrically it is radial or accurate radial,
It and/or is axially substantially axial direction or accurate axial direction.
Generally, the above-mentioned configuration of fringe region according to the embodiment has the effect that putting from pin-style contact portions
Electricity does not enter or only enters heating channel with very low probability, thus by the principal direction of the propagation of electric discharge from axially varying Cheng Jing
To.When electric discharge is generally propagated along the inner sidewall of nozzle from pin-style contact portions, when in the presence of sufficiently sharp keen edge (such as basis
The edge with small effective radius or precise radius of embodiment) when, electric discharge will not be followed along wall to the diameter in heating channel
To path.Therefore, it in relay unit according to the embodiment, is detached from usual edge region of discharging from side wall, and into
One step Propagation, rather than follow the path in the opening of side wall to heating channel.Imagine this effect to put with what is discharged
Elevator grade size Ls is associated.When efficient frontier radius is sufficiently small, thus when edge or step are sufficiently sharp keen in simple terms,
Electric discharge can carry out a kind of jump by edge/step, this causes the disengaging from wall, and can propagate axially further, and
It is not to follow around edge to the wall in radial heating channel.Typical step size Ls from calculating is shown in Fig. 1.By
This is it can be seen that minimum step length comes across the voltage (200 kV) and SF of minimum application6Maximum pressure (6 bar).Hair
Existing minimum step length is about 2.5 mm for the parameter area studied.In order to consider safe clearance, particularly in view of electricity
Arc can be advanced or be propagated with oblique angle by fringe region, thus it includes positive/negative percent 10 that edge, which should have about 2 mm(,
Tolerance) maximum radius.Preferably, effective or precise radius is equal to or less than 1.5 mm or is equal to or less than 1.0 mm.Root
It can be generally used under 70 kV and bigger voltage according to the relay unit of embodiment.Although testing with other above is sharp
Use SF6It is implemented, but imagines the behavior observed of discharge process according to the embodiment from dependence test and experience
It will be similar when using other appropriate buffer gas in disconnected device unit.Therefore, as described further below, reality of the invention
Applying example includes having and SF6The relay unit of different gas.
Fig. 2 schematically illustrates the relay unit 1 for air-blowing circuit-breaker.It has central axis A.In order to illustrate mesh
And main segmentation that only show unit, omit such as actuator unit.Relay unit includes having starting the arc contact portion 12
First contact portion 10, starting the arc contact portion 12 are usually but are not necessarily tulip type.During second contact portion 20 is included in
The pin-style contact portions 25 and cylindrical shaft 22 being shown in state after disconnected process.Nozzle 30 includes the insulation material of such as PTFE
Material, and it is fixed to the first contact portion 10.Nozzle has the first segmentation 32 for surrounding starting the arc contact portion 12, intermediate cylindrical point
Section 34 and bifurcated segmentation 36.Heating channel 40 is provided in cylinder segmentation 34, the heating channel 40, which has, to be led in nozzle 30
Circumferential opening 42.During interruption/opening operation, compressed gas is directed into during the opening operation of relay unit 1
In starting the arc area 50 between starting the arc contact portion 12 and pin-style contact portions 25.
In the region of the circumferential opening 42 in heating channel 40, in the heating channel 40 to be oriented with the angle of central axis A
The first side wall 60 and nozzle 30 intermediate cylindrical segmentation 34 wall between there are circumferential edges regions 46.According to embodiment, circle
Circumferential edges region 46 can have different configurations.It is provided in their shared edge regions 46 effective or accurate at most 2 mm
The feature at least one edge 47 of radius.
The various options of the configuration for Fig. 3 to Fig. 6 fringe region 46 described are provided below.
In Fig. 3, fringe region 46 is shown as with the edge 47 with effective radius r.R is about in embodiment
2.0 mm or smaller, more preferably 1.5 mm or smaller, and most preferably 1.0 mm or smaller.As described above,
Edge 47 promotes the Propagation of the electric discharge during interrupt action.
In the embodiment being shown in FIG. 4, circumferential edges region 46 includes three adjacent surfaces 61,62,63.Adjacent surface 61,
62,63 at least partly circumferentially around the central axis A of relay unit.Three or in other options it is at least two adjacent
At least partly periphery 61,62,63 jointly be heat channel 40 the first side wall 60 and nozzle 30 cylinder segmentation 34 wall it
Between fringe region 46 part.Effective radius is generated by the combination gradient in the face 61,62,63, and the effective radius is
About 2.0 mm or smaller, more preferably 1.5 mm or smaller, and most preferably 1.0 mm or smaller.
Effective radius r is also referred to as Envelope radius r herein.Instead of having shown in such as Fig. 3 substantially
A quarter circle shape and precise radius (in a cross section view), as shown in Figure 4, the first of heating channel 40
In the case where the non-circular shape (in a cross section view) at the edge between the wall of the cylinder of side wall 60 and nozzle 30 segmentation 34,
Envelope radius r may be present herein.Envelope radius is defined as the radius of the true form of approximate fringe region.In Fig. 4, packet
Network radius is shown as arrow r, wherein terminates at " edge " of the tip of arrow between adjacent surface 61 and adjacent surface 62.Cause
This, Envelope radius r is regarded as to be matched with (irregularly, that is, non-circular) edge and makes each position on boundary curve
(in a cross section view) by the least radius of the envelope of curve of radius r.Although this is only illustratively shown as out in Fig. 4,
It is that the concept of Envelope radius is equally applicable to other embodiments as described herein.Predominantly (a quarter) round shape at edge
In the case where shape, Envelope radius is identical as precise radius.
In the embodiment being shown in FIG. 5, fringe region 46 includes multiple steps 56.Each step 56 has side as a result,
Edge 47, the edge 47 has with the effective or precise radius significantly less than 2.0 mm, especially edge 47 to be equal to or less than
1.5 mm and preferably it is equal to or less than 1.0 mm and the most preferred effective radius or accurate equal to or less than 0.5 mm
Radius.
Generally, as shown in Figure 5, step 56 is respectively including with alternately substantially parallel (v) and generally
The vertical flighting of the orientation of (h) and corresponding size --- it thus can be relative to the end of the first side wall 60 in heating channel 40
The side wall that part provides the cylinder segmentation 34 of orientation or relative nozzle 30 equally provides orientation (that is, having exchange in turn
It is vertical (v) with parallel (h)).Each comfortable direction relative to the substantially parallel (v) of the first side wall (or radial) of flighting as a result,
The upper length at most 5 mm, more preferably up to 4 mm or at most 3 mm or up to about 2.5 mm；And in phase
For there are up to about 5 mm, more preferably up to about 2.5 on the direction of the first side wall generallyperpendicular (h) (or axial)
The length (" about " mean in the disclosure +/- percent 10 and the disclosure including " accurate ") of mm.
Generally diametrically (v) (or parallel relative to the first side wall 60) is intended to include relative to relay unit as a result,
Central axis A from 70 ° to 110 °, the even larger range of the gradient from 60 ° to 120 °.According to embodiment, generally axis
To (h) (or relative to the first side wall 60 vertical) include relative to central axis A from -20 ° to 20 °, even larger from -30 °
To the range of 30 ° of gradient.The example of radial (v) section with the angle different from 90 ° is shown in Fig. 6, wherein one
Kind sawtooth profile generates, and the additional reduction in view of surface current can be advantageous.
In addition, flighting can have different size relative to each other, it is meant that the axial direction (h) and radial direction of identical step 56
Difference between (v) section.In addition, each other the step 56 of modified size can be it is existing.
In the embodiment shown in fig. 5 and fig., three steps 56 are shown, however the quantity of step can it is higher (such as
4 or 5) or lower (such as 2).In embodiment, in order to realize target effect, step 56 is provided, so that formed by step
Ladder has with relative to the trunnion axis in central axis A(Fig. 5 and Fig. 6) at least about 30 ° of inclination angle a(referring to Fig. 5 and
Nodel line (pitch line) Fig. 6).Experimentally it has been found that when inclination angle a is 30 ° or bigger, more preferably 45 °
Or when bigger, electric arc disengaging is sufficient.
In embodiment, each step can vary in size, and not have so that step 56 is formed as in Fig. 5 and Fig. 6
The ladder of constant inclination angle a.Alternatively, inclination angle a is along the path at the edge 47 for connecting different steps 56 (in drawing pane
In (drawing pane), such as in Fig. 5) variation.In other words, inclination angle depend on it at this determined position and have
It changes.In such cases, along first step 56(pass through close to nozzle 33 definition) edge 47 and the last one ladder
Grade 56(pass through close to heating channel 40 definition) edge 47 between path measurements allowable angle of inclination a at least in the path
On a position at be at least about 30 °.That is, inclination can be less than 30 ° at the other positions along the path.
In order to determine or measure the inclination angle a configured as described, lowest mean square process can be used to draw the side of connection step 56
The chart of edge 47.
According to embodiment, current-configuration allows to have than SF6The low global warming potential of global warming potential SF6's
The use (for example, as described in WO2014154292 A1) of alternate gas.
Insulating gas for example may include in the mixture of hydrocarbon or organofluorine compound from by CO2、O2、
N2、H2, air, N2At least one background gas ingredient selected in the group of O composition.For example, dielectric insulation medium may include doing
Dry air or technology air.Dielectric insulation medium can particularly include the Organic fluoride selected from the group being made of the following
Compound: fluorine ether, ethylene oxide, fluorine amine, fluorine ketone, fluoroolefins, fluorine nitrile or more every mixture and/or decomposition product.It is special
Not, insulating gas may include being at least CH as hydrocarbon4, perfluorinated and/or partially hydrogenated organofluorine compound
Or more every mixture.Organofluorine compound is preferably selected from the group being made of the following terms: carbon fluorination is closed
Object, fluorine ether, fluorine amine, fluorine nitrile and fluorine ketone；And preferably fluorine ketone and/or fluorine ether, more preferably perfluor ketone and/or hydrofluoroether,
More preferably with the perfluor ketone of from 4 to 12 carbon atoms, and the perfluor even more preferably with 4,5 or 6 carbon atoms
Ketone.Insulating gas preferably includes and air or such as N2、O2And/or CO2Etc composition of air mixing fluorine ketone.
In particular situations, above mentioned fluorine nitrile is perfluor nitrile, especially includes two carbon atoms and/or three carbon originals
The perfluor nitrile of son and/or four carbon atom.More particularly, fluorine nitrile can be perfluoroalkyl nitrile, specifically perfluor acetonitrile, perfluor third
Nitrile (C2F5CN) and/or perfluor butyronitrile (C3F7CN).Most particularly, fluorine nitrile can be perfluor isobutyronitrile (according to molecular formula (CF3)
2CFCN) and/or perfluor -2- methoxypropionitrile (according to molecular formula CF3CF(OCF3) CN).Wherein, perfluor isobutyronitrile is because of its low toxicity
Property but it is particularly preferred.
The exemplary embodiment of the system and method for relay unit detailed above for high-voltage circuit breaker.
System and method are not limited to specific embodiment described herein, but, the step of the component and/or method of system can with herein
Described in other assemblies and/or step it is unrelated and be individually utilized, and be not limited to merely with electricity as described in this article
Circuit breaker practice.On the contrary, exemplary embodiment can be applied in conjunction with many other circuit-breakers and be implemented and utilize.
Although the specific features of various embodiments of the present invention can not shown and in the other drawings not in some drawings
It shows, but this is intended merely to conveniently.Principle according to the present invention can be quoted in conjunction with any feature of any other attached drawing
And/or any feature of claimed attached drawing.
This written description discloses the present invention, including optimal mode using example, and also enables those skilled in the art
Enough practice present invention, including making and using any device or system and executing any combined method.Although in above content
Various specific embodiments are disclosed, it will be recognized to those skilled in the art that spirit and scope of the claims, which takes into account, equally to be had
The modification of effect.Especially, the non-exclusive feature of above-described embodiment can be with combination with one another.Patentable range of the invention by
Claim limits, and may include the other examples that those skilled in the art expect.If such other examples have and power
The literal language that benefit requires has no different structural details, or if such other examples include the literal language with claim
Say the equivalent structural elements without essence difference, then they are intended to come within the scope of the following claims.
Claims (15)
1. a kind of relay unit (1) for air-blowing circuit-breaker with central axis A, comprising:
First contact portion (10), first contact portion (10) have starting the arc contact portion (12)；
Second contact portion (20), second contact portion (20) include mating starting the arc contact portion (25), and especially pin type connects
Contact portion (25)；
Nozzle (30), the nozzle (30) include insulating materials and are fixed to first contact portion (10), the spray
Mouth (30) has the first segmentation (32) for surrounding the starting the arc contact portion (12), the intermediate cylindrical segmentation along the central axis A
(34) and bifurcated is segmented (36), and wherein heats channel (40) and be provided and have and lead in the nozzle (30) at least
Part-circular periphery is open (42), so that compressed gas is directed to described rise during the opening operation of the relay unit (1)
In area (50) between arc contact portion (12) and the pin-style contact portions (25)；Wherein it is described heating channel (40) it is described extremely
In the region of small part circumferential opening (42), with the angle with the central axis A come the heating channel (40) that orients
The intermediate cylindrical of the first side wall (60) and the nozzle (30), which is segmented between the wall of (34), has at least partly circumferential edges
Region (46), and wherein at least partly circumferential edges region (46) include having the at most Envelope radius of 2 mm or accurate
Radius, particularly with being equal to or less than 1.5 mm and the most preferred Envelope radius or accurate half equal to or less than 1.0 mm
At least one edge (47) of diameter.
2. relay unit as described in claim 1, wherein the circumferential edges region (46) includes at least two adjacent
At least partly periphery (61,62,63), wherein described at least two adjacent at least partly peripheries (61,62,63) are jointly
It is described heating channel (40) the first side wall (60) and the nozzle (30) the cylinder segmentation (34) the wall it
Between the edge (47) part and the edge (47) the Envelope radius it is described heating channel (40) it is described
It is formed between the wall of the cylinder of the first side wall (60) and the nozzle (30) segmentation (34).
3. relay unit as claimed in claim 1 or 2, wherein the fringe region (46) includes multiple steps (56),
In each step (56) include the edge (47) with the Envelope radius or the precise radius, especially have be equal to or
Less than 1.5 mm and it is preferred equal to or less than 1.0 mm and most preferred Envelope radius equal to or less than 0.5 mm or
The edge (47) of precise radius.
4. relay unit as claimed in claim 3, wherein the step (56) respectively includes having relative to the heating
The end section of the first side wall (60) in channel (40) alternately substantially parallel (v), particularly it is parallel (v) and generally
The vertically flighting of the orientation of (h), particularly vertical (h), and especially wherein the flighting is each comfortable relative to described
Heat on substantially parallel described in the end section of the first side wall (60) of channel (40) or exactly parallel (v) direction and
Have on described generallyperpendicular or precise perpendicularity (h) direction less than 5 mm's, more preferably at most 4 mm or at most 3 mm
Length, wherein substantially parallel (v) be defined as include relative to the relay unit the central axis A from 60 ° to
120 °, the range of gradient more specifically from 70 ° to 110 ° and generallyperpendicular (h) be defined as including relative to institute
State the range of gradient of the central axis A from -30 ° to 30 °, specifically from -20 ° to 20 °.
5. relay unit as described in claim 3 or 4, wherein the step (56) respectively includes having relative to the spray
Alternately generallyperpendicular (v) and substantially parallel (h) determine for the side wall (34) of the cylinder segmentation (34) of mouth (30)
To flighting, and especially wherein each comfortable cylinder relative to the nozzle (30) of the flighting is segmented (34)
The side wall described in generallyperpendicular (v) direction on and substantially parallel (h) direction on have less than 5 mm, more
The length of preferred at most 4 mm or at most 3 mm, wherein generallyperpendicular (v) is defined as including relative to the relay
The range of the gradient of the central axis A of unit from 60 ° to 120 °, more specifically from 70 ° to 110 °, and generally
(h) is defined as including the gradient relative to the central axis A from -30 ° to 30 °, more specifically from -20 ° to 20 ° in parallel
Range.
6. the relay unit as described in any one in claim 3 to 5, wherein the step (56) respectively includes having
Alternately generally diametrically (v) and the flighting of the axially substantially orientation of (h) relative to the central axis A, especially wherein
Have on the direction of each said generally radial (v) of leisure of flighting and on the direction of said substantially axial (h) small
In the length of 5 mm, preferred at most 4 mm or at most 3 mm, and wherein generally diametrically (v) it is defined as including opposite
In the model of the gradient of the central axis A from 60 ° to 120 °, more specifically from 70 ° to 110 ° of the relay unit
Enclose, and axially substantially (h) be defined as include the relatively described central axis A from -30 ° to 30 °, more specifically from -20 ° to
The range of 20 °, particularly 0 ° of gradient.
7. the relay unit as described in any one in claim 3 to 6, wherein relative to each other with different length
It is radial that (v) and axially (h) flighting is existing.
8. the relay unit as described in any one in claim 3 to 7 has relative to other steps not wherein having
The radial step (56) (v) with axial (h) flighting of same length is existing.
9. the relay unit as described in any one in claim 3 to 8, wherein the fringe region (46) includes at least
Three steps (56), and the step (56) are wherein provided, so that there is band by the ladder that the step (56) is formed
There is the nodel line of at least about 30 ° relative to the central axis A, more specifically at least 45 ° of inclination angle, or wherein when by institute
The inclination angle of the nodel line of the ladder of step (56) formation is stated due to the arrangement and/or length of each step
When with variation between the step (56), allowable angle of inclination is at least about 30 °, more specifically at least 45 °.
10. the relay unit as described in any one preceding claims, wherein the side wall (60) of heating channel (40)
With the joint of the nozzle (30) relative to the central axis A be generally diametrically, and wherein generally diametrically by
It is defined as including the central axis A relative to the relay unit from 60 ° to 120 °, more specifically from 70 ° to 110 °
The range of the gradient.
11. the relay unit as described in any one preceding claims, wherein be generally diametrically radial or accurate radial direction,
Be axially substantially it is axial or accurate axial, it is substantially parallel be it is parallel or exactly parallel and/or it is generallyperpendicular be it is vertical or
Precise perpendicularity.
12. the relay unit as described in any one preceding claims, wherein the relay unit is with 70 kV or more
High voltage rating.
13. a kind of circuit-breaker, the circuit circuiting appliance is just like interruption described in any one in preceding claims
Device unit (1).
14. a kind of generalized information system, the generalized information system includes circuit-breaker as claimed in claim 13 or such as claim 1
To relay unit (1) described in any one in 12.
15. the use of the relay unit (1) in circuit-breaker as described in any one in claim 1 to 12.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17158884.1 | 2017-03-02 | ||
| EP17158884 | 2017-03-02 | ||
| PCT/EP2018/055202 WO2018158440A1 (en) | 2017-03-02 | 2018-03-02 | High-voltage circuit breaker with improved robustness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110402475A true CN110402475A (en) | 2019-11-01 |
| CN110402475B CN110402475B (en) | 2021-10-15 |
Family
ID=58213011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880015368.1A Active CN110402475B (en) | 2017-03-02 | 2018-03-02 | High-voltage circuit breaker with improved robustness |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3590120B1 (en) |
| CN (1) | CN110402475B (en) |
| WO (1) | WO2018158440A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100918A (en) * | 1985-02-15 | 1986-10-01 | 株式会社日立制作所 | A kind of compressed gas type arc-extinguishing breaker |
| DE19936987C1 (en) * | 1999-07-30 | 2001-01-25 | Siemens Ag | High-voltage (HV) switch with arcing contacts and single electrode |
| EP1218906B1 (en) * | 1999-09-30 | 2003-04-23 | Siemens Aktiengesellschaft | High voltage circuit breaker |
| CN102938349A (en) * | 2012-11-08 | 2013-02-20 | 上海思源高压开关有限公司 | High-voltage gas circuit breaker |
| US20150021297A1 (en) * | 2012-04-11 | 2015-01-22 | Patrick Stoller | Circuit Breaker |
| EP2887367A1 (en) * | 2013-12-19 | 2015-06-24 | ABB Technology AB | Gas-insulated high-voltage circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9425006B2 (en) | 2013-03-28 | 2016-08-23 | Abb Technology Ltd | Switch assembly, a switching device comprising a switch assembly, a switchgear comprising a switching device and a method for cooling |
-
2018
- 2018-03-02 EP EP18707720.1A patent/EP3590120B1/en active Active
- 2018-03-02 CN CN201880015368.1A patent/CN110402475B/en active Active
- 2018-03-02 WO PCT/EP2018/055202 patent/WO2018158440A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100918A (en) * | 1985-02-15 | 1986-10-01 | 株式会社日立制作所 | A kind of compressed gas type arc-extinguishing breaker |
| DE19936987C1 (en) * | 1999-07-30 | 2001-01-25 | Siemens Ag | High-voltage (HV) switch with arcing contacts and single electrode |
| EP1218906B1 (en) * | 1999-09-30 | 2003-04-23 | Siemens Aktiengesellschaft | High voltage circuit breaker |
| US20150021297A1 (en) * | 2012-04-11 | 2015-01-22 | Patrick Stoller | Circuit Breaker |
| CN102938349A (en) * | 2012-11-08 | 2013-02-20 | 上海思源高压开关有限公司 | High-voltage gas circuit breaker |
| EP2887367A1 (en) * | 2013-12-19 | 2015-06-24 | ABB Technology AB | Gas-insulated high-voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3590120B1 (en) | 2021-02-17 |
| EP3590120A1 (en) | 2020-01-08 |
| WO2018158440A1 (en) | 2018-09-07 |
| CN110402475B (en) | 2021-10-15 |
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