CN104995707B - Contact system - Google Patents
Contact system Download PDFInfo
- Publication number
- CN104995707B CN104995707B CN201380059259.7A CN201380059259A CN104995707B CN 104995707 B CN104995707 B CN 104995707B CN 201380059259 A CN201380059259 A CN 201380059259A CN 104995707 B CN104995707 B CN 104995707B
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- Prior art keywords
- contact
- deflector
- refers
- longitudinal axis
- electrical switchgear
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- 238000010276 construction Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 7
- 241000722921 Tulipa gesneriana Species 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 3
- 229920006362 Teflon® Polymers 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 235000013290 Sagittaria latifolia Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000015246 common arrowhead Nutrition 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Electrical switchgear (1) has longitudinal axis (z) and including at least one contact arrangement (4a, 4b), wherein contact arrangement (4a, 4b) include the first contact (4a, 3a) and matching the second contact (4b, 3b), wherein the first contact includes at least one contact and refers to (4a, 3a), wherein for closed and disconnected electrical switchgear (1), first contact and the second contact (3a, 3b of matching;4a, 4b) in it is at least one can it is mobile parallel to longitudinal axis (z) and with another contact (3b, 3a;4b, 4a) cooperation, it is characterised in that electrical switchgear (1) also includes deflector (6;7a;11,14), it refers to (3a, 4a) before or while close switching device (1) at least one contact that flexibly deflects in the radial direction away from axis (z).
Description
Technical field
Filled the present invention relates to medium and high pressure switching technique field, and on electrical switchgear, for electric switch
The contact arrangement put, and the method for close switching system, particularly as in power transmission or distribution system
Earthed switch, snap action earthed switch, isolator, combined type isolator and earthed switch, load break switch, circuit breaker
Device or generator circuit breaker.
Background technology
Electrical switchgear is known in medium and high pressure switch application field.They in electric fault for example for sending out
Interruptive current when raw.As the example of electrical switchgear, circuit-breaker has break contact and keeps them away from each other,
To avoid electric current, or even the task in the case of the high potential from electric fault itself.For the purpose of this disclosure, use
Pressure refers to the voltage from 1kV to 72.5kV in language, and term high pressure refers to the voltage higher than 72.5kV.Electrical switchgear is similar
Circuit-breaker can allow for transmitting 5000A to 6300A high nominal current, and in the very high of 550kV to 1200kV
Switch 63kA to 80kA very high short circuit current under voltage.
Due to high nominal current, therefore electrical switchgear now needs so-called nominally to connect for many of nominal current
Fingertip.When interrupting the nominal or short circuit current in (disconnection) electrical switchgear, electric current touches from the nominal of electrical switchgear
Point is changed to its arcing contact.Therefore, when connecting the nominal contact of (closure) electrical switchgear, also it is connected to arc extinguishing and touches
Point.They generally comprise the longitudinal axis cloth for referring to the electrical switchgear in cage around so-called arc extinguishing as the first arcing contact
The arc extinguishing contact put refers to, and the bar being driven into finger cage as the second arcing contact.
The nominal and disconnection of arcing contact and closing course must be with the speed that limit in advance according to electrical switchgear
Specification performs.Especially during close switching device, arc extinguishing contact, which refers to, is subjected to the impact as caused by the bar to arrive.Effect
Impulsive force on arc extinguishing contact refers to depends on the closing speed of bar.Therefore, speed is higher, then act on arc extinguishing contact refer on
Power is higher.However, it is expected that high contact velocity, because working as in switching device in such as voltage or electric current zero crossing (zero-
When applying controlled switching in the sense that accurately closing or disconnect as far as possible immediately when crossing), with an improved electric switch
The performance of device.Due to act on arc extinguishing contact refer on relatively high impact forces, therefore arc extinguishing contact refers to and can undergo permanent deformation.Example
Such as, they can radially be deformed relative to longitudinal axis.The contact force that arc extinguishing contact refers between the second arcing contact is necessary
High enough to ensure good electrical contact.Requirement finally, with regard to contact force is no longer met due to deformation.
EP0951038A1 (immediate prior art) discloses a kind of support body for having and referring to for arc extinguishing contact
Arcing contact arrangement in generator circuit breaker.
The content of the invention
It is an object of the invention to strengthened in terms of robustness by the damage for preventing the contact of electrical switchgear from referring to
Electrical switchgear.
In the first aspect of the present invention, the purpose is by with longitudinal axis and including the electricity of at least one contact arrangement
Air cock device solves.Contact arrangement includes the first contact and the second contact of matching, wherein the first contact includes at least one
Individual contact refers to.For closed and disconnected electrical switchgear, at least one in contact can move parallel to longitudinal axis, and
Cooperated with another contact.Electrical switchgear also includes deflector, and it is before or while close switching device along remote
The radial direction of axis flexibly deflects at least one contact and referred to.In addition, deflector can be parallel to longitudinal axis z corresponding to connecing
The first position of the advance inflection point of fingertip and moved corresponding between the second place of the end position of the second arcing contact,
In the first position, contact refer to when electrical switchgear is in and disconnected in construction by deflector relative to longitudinal axis z radially
Outwards flexibly deflect, in the second place, deflector is when electrical switchgear is in closed structure and non deflected contact refers to,
And deflector is suitable to be moved to the second place from first position by the second arcing contact when electrical switchgear closes.
Contact arrangement is designed to that there is the advantages of deflector for flexibly being deflected in a manner of mentioned above and contacting and referring to exist
Reduce in impact stress, while the required contact force between two contacts is kept.
In embodiment, at least one contact arrangement be or including arcing contact arrange, the first contact be or including comprising
The first arcing contact that the contact of at least one arc extinguishing refers to, and the second contact matched is or the second arc extinguishing including matching touches
Point.Specifically, for closed and disconnected electrical switchgear, at least one in arcing contact can move parallel to longitudinal axis
It is dynamic, and cooperated with another arcing contact.
In alternative or additional embodiment, at least one contact arrangement is or arranged including nominal contact, the first contact
It is or including referring to and being formed the first nominal contact relative to the concentric finger cage of longitudinal axis comprising multiple Nominal contacts, and matches
The second contact be or the second nominal contact including matching.Specifically, for closed and disconnected electrical switchgear, nominally
At least one in contact can move parallel to longitudinal axis, and be cooperated with another nominal contact.
In second aspect, the invention further relates to the contact arrangement for electrical switchgear as disclosed above.Contact
Arrangement has longitudinal axis, and refers to including at least one contact.Provide deflector, its before close switching device or
Contact is flexibly deflected along the radial direction away from axis simultaneously to refer to.
In other embodiments, contact arrangement is or arranged including arcing contact, and contacts and refer to and be or connect including arc extinguishing
Fingertip, and/or contact arrangement are or arranged including nominal contact, and contact and refer to and be or refer to including Nominal contact.
The third aspect of the present invention is on a kind of electrical switchgear being used to close according to the first aspect of the invention
The method of contact arrangement according to the second aspect of the invention.This method comprises the following steps：By means of deflector radially to
Extrinsic deflection contact refers to and makes the second contact and the first contact portion of deflection.
It is in this way the advantages of close switching device by referring to and the first impact of the second contact in contact
The preceding contact of disconnection in advance refers to obtain the reduction of the mechanical strain of application over the contact fingers.By so, contact refer to be subjected to it is smaller
Mechanical stress and therefore their life.
Brief description of the drawings
Further embodiment, advantage and the application of the present invention obtains from by means of the present following description of accompanying drawing.Accompanying drawing
In show：
Fig. 1 is the fragmentary sectional view of the simplification basic embodiment of high-voltage circuit breaker；
Fig. 2 and 3 is that the arc extinguishing of the first arcing contact of Fig. 1 of the first embodiment with deflector circuit-breaker connects
The side cross-sectional view of fingertip；
Figure 4 and 5 connect for the arc extinguishing of the first arcing contact of Fig. 1 of the second embodiment with deflector circuit-breaker
The side cross-sectional view of fingertip；
Fig. 6 and 7 is that the section that the arc extinguishing contact of the first arcing contact of the embodiment of the deflector with Figure 4 and 5 refers to is bowed
View；
Fig. 8 is the front view of the deflector of the Figure 4 and 5 such as looked up into longitudinal axis z side；
Fig. 9 to 12 is the arc extinguishing of the first arcing contact of Fig. 1 of the 3rd embodiment with deflector circuit-breaker
Contact the section view referred to；And
Figure 13 and 14 is that the arc extinguishing contact of the first arcing contact of the circuit-breaker of Fig. 1 with deflection restriction element refers to
Section view.
List of parts
1 basic circuit breaker
2 refer to supporting member
The contact of the nominal contacts of 3a first refers to
The nominal contacts of 3b second
The first arcing contact that 4a disconnects in advance, arc extinguishing contact refer to
The arcing contacts of 4b second
The arc extinguishing contact that 4c does not have deflector refers to
The arc extinguishing contact that 4d is in closed structure refers to
5 capsules, shell
6 according to the deflector of first embodiment
7a is according to the deflector of second embodiment
7b springs
7c protection pipes
7d spring fixing pipes
8 deflection restriction elements
9 shielding parts
11 first deflecting elements
The adjacent parts of 11a first
The adjacent parts of 11b second
12 stop elements
14 second deflecting elements
15 first is raised
Inclined-plane raised 15a first
16 second is raised
20 refer to supporting member
Z (switching device or contact arrangement) longitudinal axis.
Embodiment
The present invention is described for the example with nominal contact and the high-voltage circuit breaker of arcing contact, but following description
Principle be also suitable for use of the present invention in other switching devices (for example, the switching device for the type being initially mentioned), e.g.,
Earthed switch, snap action earthed switch, isolator, combined type isolator and earthed switch, load break switch, circuit breaker
Device or generator circuit breaker, and generally in any switch for high pressure or middle pressure.Specifically, the present invention is complete
It is complete to be applicable to have only arcing contact arrangement, only nominal contact to arrange, or both arcing contact system and nominal contact system
Switch in.Arcing contact arrangement will include the first arcing contact, and it includes at least one arc extinguishing contact and refers to 4a, and match
Second arcing contact 4b, both can be on moving each other.Nominal contact arrangement will include the first nominal contact, and it includes multiple
Nominal contact refers to 3a and the second arcing contact 3b of matching, and both can be on moving each other.
Hereinafter, same reference numerals represent identical element in the structure or function of various embodiments of the present invention.
Fig. 1 shows the fragmentary sectional view of the simplification basic embodiment of the high-voltage circuit breaker 1 in closed structure.
In Fig. 1, " fragmentary sectional view " means the top in the section that circuit-breaker is illustrate only the reason in order to understand.Device
It is rotatably symmetrical on longitudinal axis z.The element of the only circuit-breaker 1 on the present invention is described below.Present in accompanying drawing
Other elements are of the invention and uncorrelated for understanding, and are known to the technical staff of high-voltage electrical apparatus engineering.
" closed structure " means the nominal contact and/or arcing contact closure of circuit-breaker as used herein.Tool
For body, closed structure is construed to the arranged stationary of the contact.Term " closure " or " closing course " refer to one or more
The mobile status of contact.Therefore, " disconnect and constructing " as used herein the nominal contact and/or arc extinguishing for meaning circuit-breaker
Contact disconnects.Specifically, the arranged stationary that structure interpretation is the contact is disconnected.Term " disconnection " or " disconnection process " refer to
The mobile status of one or more contacts.
Circuit-breaker 1 includes the room surrounded by shell or capsule 5, and shell or capsule 5 are generally the circle around longitudinal axis z
Tubular.It is also included by contacting the nominal contact arrangement for referring to 3a the first nominal contact and being formed including multiple, in order to clearly former
Cause, it is shown here that multiple contacts refer to only one in 3a.Nominal contact arranges the finger cage for being formed about longitudinal axis z.Screen 9
It can surround and refer to cage arrangement.Nominal contact arrangement also includes the second matching contact 3b of generally metal tube.Contact refers to 3a and second
Contact 3b can be moved to disconnection construction on the closed structure shown in Fig. 1 each other (wherein they are with being electrical contact with each other)
(wherein they are separated from each other), and vice versa.Furthermore it is possible that the only one in contact 3a, 3b is parallel to longitudinal axis z
It is mobile, and longitudinally z is static by another contact 3b, 3a.
Contact, which refers to 3a and attached to, to be referred to supporting member 2 (be specifically metal support post) or can be one part.
The arcing contact that circuit-breaker 1 also includes being formed by the first arcing contact 4a and the second arcing contact 4b is arranged.
In one embodiment of switching device, the first nominal contact and the first arcing contact 4a, and second nominal touch
Point and the second arcing contact 4b, be able to can be moved relative to each other.In another embodiment of switching device, first is nominal tactile
Point and the first arcing contact 4a can not be on moving each other.In the same manner, the second nominal contact 3b and the second arcing contact
4b can not be moved relative to each other.In order to the present invention illustration purpose, latter embodiment its assume only the second nominal contact
3b and the second arcing contact 4b can be moved, and refer to cage and the first arcing contact 4a is static along z-axis line.
Fig. 2 shows that the arc extinguishing of the first arcing contact of the first embodiment with the deflector 6 in neutral connects
Fingertip 4a section view, in other words, in the disconnection construction of electrical switchgear 1.Deflector 6, which is diametrically disposed at, electrically to be opened
The longitudinal axis z for closing device 1 is contacted with arc extinguishing and referred between 4a.Advantageously, deflector 6 is pipe, and has following diameter so that
Arc extinguishing contact refers to 4a and is deflected outward being not more than 0.05cm relative to longitudinal axis z.In other words, arc extinguishing contact refer to cage internal diameter increase reach
To 0.1cm.Therefore, arc extinguishing contact refers to 4a and disconnected in advance by deflector 6.Arc extinguishing contact refer to 4a typically have its free end (
Referred to as tulip portion) place towards longitudinal axis z curvature, as that can see in the accompanying drawings.Arcing contact 4a, 4b are shown as locating in fig. 2
Constructed in disconnecting, and be in closed structure in figure 3.Refer in addition, show in phantom arc extinguishing contact in figs 2 and 3, and
Represented in non-deflected posi-tion by reference 4c, because it will be arranged to no deflector 6.This is adopted also for subsequent embodiment
With, but corresponding diagram is not shown in these embodiments due to understanding reason.
Fig. 3 shows that the arc extinguishing contact of Fig. 2 the first arcing contact refers to 4d section view, and wherein deflector 6 is in electricity
The closed structure of air cock device 1.In closed structure, deflector 6 substantially no longer contacts arc extinguishing contact and refers to 4d, because second goes out
Arc contact 4b radially flexibly deflects arc extinguishing contact relative to longitudinal axis z now and referred to.Therefore, arc extinguishing contact refers to the of 4a
One deflection is caused by deflector 6, and hereinafter referred to advance deflection, and arc extinguishing contact refers to 4d another deflection by the second arcing contact
4b causes, referred to hereinafter as final deflection.Due to its elasticity, refer to 4d in the arc extinguishing contact of final inflection point and apply a force upon and be in
On second arcing contact 4b of closed structure, it is ensured that good electrical contact.This is also for all embodiments of the invention
Using.The end for referring to the deflector 6 in 4a tulip portion in face of arc extinguishing contact can have circle.Electrical switchgear 1 also includes
Carry at least one finger supporting member 20 for contacting and referring to 4a.
In the embodiment of electrical switchgear 1, deflector 6 is referring to 4a advance inflection point corresponding to arc extinguishing contact
First position be fixedly attached to refer to supporting member 20, as shown in Figure 2.Therefore, in this embodiment, arc extinguishing contact refers to
4c, which is positioned as deflecting arc extinguishing in advance in the disconnection construction of electrical switchgear 1 and contacted, refers to 4a, and it is in electrical switchgear 1
Closed structure in be positioned at final inflection point 4d.
This advantageously simplifies the structure of electrical switchgear 1, because deflector 6 is only when electrical switchgear 1 assembles
Only it is fixed on its supporting member once, is advantageously fixed on and refers to supporting member 20.
Advantageously, deflector 6 has the rigidity for referring to 4a higher than arc extinguishing contact.To make arc extinguishing by the way that this ensures that, deflector
Contact refers to 4a deflections, and really not so in turn.The rigidity of deflector 6 is chosen to obtain highest deflection effect, changes speech
It so that the bending of deflector 6 itself is minimum.
Fig. 4 shows that the arc extinguishing contact of the first arcing contact refers to 4a side cross-sectional view, and the second of wherein deflector 7a is real
Apply the disconnection construction that example is in electrical switchgear 1.Deflector 7a also is disposed between longitudinal axis z contacts with arc extinguishing and refer to 4a, as
In the case of Fig. 2 first embodiment.Spring 7b is provided, it is connected, and carrying is at least one to contact the finger supporting member 20 for referring to 4a
With deflector 7a.Deflector 7a can be moved between the first location and the second location parallel to longitudinal axis z.First position is corresponding
Refer to 4a advance inflection point in arc extinguishing contact, wherein deflector 7a abuts against arc extinguishing contact and refers to 4a, particularly against arc extinguishing
Contact refers to 4a tulip portion, and when electrical switchgear 1 is in and disconnects construction relative to longitudinal axis z radially bullets
Property deflect arc extinguishing contact refer to 4a.The second arcing contact 4b that the second place corresponds in the closed structure of electrical switchgear 1
End position.In other words, initially entered in the second arcing contact 4b after arc extinguishing refers to cage, it is further inclined that arc extinguishing contact refers to 4a
Turn, until it reaches its final inflection point (being represented in the position by 4d).Now, deflector 7a substantially no longer go out by contact
Arc contact 4a.When the second arcing contact 4b is further promoted along the direction opposite with arrow z, it eventually arrives at deflector
7a, and promote it, refer to its end position in cage until the second arcing contact 4b reaches arc extinguishing.Therefore, in the second place, partially
Turn device 7a and the contact of non deflected arc extinguishing refers to 4d.In final inflection point, arc extinguishing contact refers to 4d and only deflected by the second arcing contact 4b.
Therefore, deflector 7a is suitable to be moved to second from first position by the second arcing contact 4b when electrical switchgear 1 closes
Position.Advantageously, in the absence of making deflector 7a be moved to from first position the add ons needed for the second place, because this
Business is performed by the second arcing contact 4b itself.Deflector 7a is suitable to when electrical switchgear 1 disconnects by spring 7b from second
Put and be moved to first position, and left in the second arcing contact 4b before arc extinguishing refers to cage and reach first position.With spring 7b phases
The deflector 7a of the pass embodiment has the similar effects of the embodiment of the fixed deflection device 6 similar to Fig. 2 and 3, because going out
Arc contact refers to 4a and is always maintained in the disconnection construction of electric switchgear 1 in advance deflection state.
In one embodiment, deflector 7a is star, and advantageously comprises Teflon or be made up of Teflon.Star
The advantages of be, be cooled into electric arc between two arc contacts 4a, 4b when closing or disconnecting electrical switchgear 1
, press and can quickly be flowed by deflector 7a in extinguishing in switching device 1, and therefore it can be by forming in deflector
" passage " dissipation between 7a star tooth, the passage have larger open in this embodiment.
Such as finding, deflector 7a it can contact to refer in arc extinguishing and be guided on 4a inner surface in Fig. 4.Inner surface is represented in face of vertical
Axis z surface.Deflector 7a radial dimension is chosen to it and contacted with arc extinguishing on the inner surface for referring to 4a as follows
One or more edges that one or more edges of slip are relative contact the free end in the tulip portion for referring to 4a most than arc extinguishing
Lower end is closer to longitudinal axis z.In context of this document, term " under " or be construed to " under most " from longitudinal axis z " relatively near " or "
Recently ".By selecting deflector 7a such size, it is well established that during the closing course of electrical switchgear 1, with
The second arcing contact 4b on the opposite direction of axis z arrow parallel to longitudinal axis z transfers can be towards referring to supporting member 20 backward
Push away deflector 7a.Deflector 7a diameter is chosen to have following value so that deflector 7a can be in close switching device 1
The first arcing contact 4a and the second arcing contact 4b the first contact after or the when disconnecting electrical switchgear 1
One arcing contact 4a and the second arcing contact 4b last contact, are specifically moved freely through parallel to longitudinal axis z.
In embodiment, spring 7b is arranged in protection pipe 7c, and specifically in hollow protective tube 7c, it is regularly attached
In deflector 7a.Therefore, protection pipe 7c when deflector 7a is shifted between the first location and the second location together with deflector 7a
It is mobile.By providing protection pipe 7c, hot gas contact spring 7b is avoided respectively and may destroy it or influence its rigidity or bullet
Property.Deflector 7a can be supported by finger supporting member 20, and longitudinal axis z movements are roughly parallel to ensure to refer to supporting member 20.Therefore, this
In the supporting member that does not show that movably supported by finger supporting member 20.For example, supporting member can be transferred through finger branch back and forth
Hole in bearing member 20.
Advantageously, as in the embodiment according to Fig. 2 and 3, deflector 7a has the rigidity for referring to 4a higher than arc extinguishing contact.
Refer to 4a by deflecting arc extinguishing contact this ensures that, deflector 7c, and it is really not so in turn.Deflector 7a rigidity selection
Into acquisition highest deflection effect is caused, in other words so that protection pipe 7c itself bending is minimum.
Fig. 5 shows that the arc extinguishing contact of Fig. 4 the first arcing contact refers to 4a side cross-sectional view, the of wherein deflector 7a
Two embodiments are in the closed structure of electrical switchgear 1, therefore refer to 4d final inflection point in arc extinguishing contact.Such as can be from figure
4 and it is seen in fig. 5 and similar to Fig. 2 and 3 embodiment, arc extinguishing contact refers to 4a electrical switchgear 1 disconnection construction in
Advance inflection point is positioned at, the arc extinguishing contact as deflection refers to 4a, and it is fixed in the closed structure of electrical switchgear 1
Position is in final inflection point.
Fig. 6 shows that two arc extinguishings contact of the first arcing contact refers to the deflection of 4a sectional top view, wherein Figure 4 and 5
Device 7a embodiment is in the closed structure of electrical switchgear 1.Deflector 7a by the second quenching moment 4b tip along relative to
The opposite direction in arrow z direction is to pusher.Spring fixing pipe 7d is connected in spring 7b, and the supporting member as spring 7b.
In one embodiment, spring fixing pipe 7d is made up of Teflon.
Protection pipe 7c has the first section of the heavy wall that band extends between spring 7b and deflector 7a, and the first section
The second section with thin-walled afterwards.Spring 7b is arranged in outside protection pipe 7c.In the first section, protection pipe 7c is relative to vertical
Axis z has outer radius, and it is slightly lower than the inside radius that arc extinguishing contact refers to 4a so that it can be when electrical switchgear 1 closes
Arc extinguishing contact refer between 4a and the second arcing contact 4b first contact after arc extinguishing contact refer to 4a finger cage in move.Protect
Pillar 7c can be made up or including them of steel and/or titanium and/or tungsten copper.
Fig. 7 shows that the arc extinguishing contact of the first arcing contact refers to 4a sectional top view, the deflector of wherein Fig. 4,5 and 6
7a embodiment is in the disconnection construction of electrical switchgear 1.In the position, the second arcing contact 4b does not act on deflector
On 7a.During disconnection process, the position of the second arcing contact 4b shown in Fig. 6, the second arcing contact 4b is along arrow
Head z direction movement.Deflector 7a follows the movement together with the protection pipe 7c promoted by spring 7b.Once deflector 7a reaches tool
The arc extinguishing contact for having small diameter refers to 4a " tulip portion " section, and it is just referred to 4a tulip portion section by arc extinguishing contact and stopped
Gear, can such as see in the figure 7.
Fig. 8 shows the Fig. 4 to 7 such as looked up into Fig. 6 and 7 plane AA side deflector 7a front view.
In the figure, deflector 7a favourable star can be well seen.Line surface (dashed surface) only show in this way,
To be distinguished between absolutely empty in they and middle part.Described above " logical of empty space representation in deflector 7a middle part
Road ", it is formed between star tooth.Pressure can be in the favourable shape using deflector 7a in heat fire extinguishing in electrical switchgear 1
Comparatively fast dissipated by passage from arcing contact 4a, 4b contact area during shape.Understand, produce the other shapes of same effect
Easily envision.
Fig. 9 to 12 shows that the arc extinguishing contact of the first arcing contact refers to 4a section view, wherein deflector 11,12,14
3rd embodiment respectively in closure or the different phase of disconnection process.Electrical switchgear 1 includes carrying at least one arc extinguishing
Contact refers to 4a finger supporting member 20.Deflector includes the first deflecting element 11.Arc extinguishing contact refers to 4a and is arranged in the first deflecting element
Between 11 and longitudinal axis z.In this example, the first deflecting element 11 is arranged in the first nominal contact 3a (shown in Fig. 1) with going out
Arc contact refers between 4a.Advantageously, in the disconnection construction of electrical switchgear 1, the first deflecting element 11 is radially arranged
It is not more than 1cm into 4a is referred to from arc extinguishing contact.First deflecting element 11 includes the first adjacent part 11a and the second adjacent part 11b.
Deflector also includes the second deflecting element 14 for referring to 4a end positioned at arc extinguishing contact.Stop element 12 is provided, it can be attached
It is connected to the fixed part of electrical switchgear 1.Due to understanding, therefore the fixed part is not shown in Fig. 9 to 12.The
One deflecting element 11 can be roughly parallel to first that longitudinal axis z abuts against stop element 12 in the first adjacent part 11a
Put between (Figure 10) and the second adjacent part 11b abut against the second place (Figure 11,12) of stop element and move.Favourable
It is that the first deflecting element 11 and the second deflecting element 14 are shaped as engaging each other, so as to promote when longitudinally z is mutually displaced
Second deflecting element 14 and arc extinguishing contact refer to 4a away from longitudinal axis z.
In embodiment, the first deflecting element 11 is included in the first projection 15 of its free end, and the second deflection member
Part 14 is included in the second projection of free end 16.First projection 15 and the second projection 16 construct in the disconnection of electrical switchgear 1
In it is interlaced.Second projection 16 slides over during arc extinguishing contact refers to 4a deflection in the first projection 15.In other implementations
In example, projection 15,16 can be replaced by the other shapes of generation same effect.
In embodiment, the first deflecting element 11 and the second deflecting element 14 have the rigidity for referring to 4a higher than arc extinguishing contact.
By so, as also mentioned together with Fig. 3, it is ensured that deflector 11,14 deflects arc extinguishing contact and refers to 4a, and in turn not such as
This.The rigidity of deflector 11,14 be chosen to obtain highest deflection effect, in other words so that deflector 11,14 itself it is curved
It is bent minimum.
For all embodiments of deflector explained above, it is advantageous that deflector includes steel or titanium.This will be required
Rigidity and persistence give deflector.
According to the embodiment of Fig. 9 to 12 deflector particularly suitable for complete double acting contact maker, but it can also be in other types
Contact maker in implement.For following explanation, it is assumed that in this example, the first nominal contact 3a and the first arcing contact 4a are put down
Row moves towards the second nominal contact 3b and the second arcing contact 4b respectively in longitudinal axis z.
In fig.9, electrical switchgear 1 is in disconnect and constructed.In a state, the first deflecting element 11 and the second deflection
Element 14 engages.Therefore, the first projection 15 and the second projection 16 are interlaced.During closing course, arc extinguishing contact refers to 4a courts
The right side that second arcing contact 4b is moved in figure.During the movement, the second deflecting element 14 drags along the first deflecting element 11
The dynamic point before impacting the second arcing contact 4b immediately in the first projection 15 by means of being engaged with the second projection 16.This
Shown in Figure 10.At this point, the first deflecting element 11 abuts against the first adjoining by the backstop of stop element 12, stop element 12
Part 11a.However, arc extinguishing contact refers to 4a and further moved in same direction.It is raised first that this causes the second projection 16 to start
Upward sliding on 15 inclined-plane 15a.By the way that so, whole arc extinguishing contact refers to 4a rises；Say more commonly, it is relative to longitudinal axis
Z is radially shifted.Then, the first deflecting element 11 and the second deflecting element 14 are not rejoined, and can such as see in fig. 11.
Another step is reflected in the position of stop element 12 in Figure 11, and wherein electrical switchgear 1 disconnects.In disconnection process, go out
Arc contact refers to the left side that 4a is moved in Fig. 1, i.e. away from the second arcing contact 4b.During the movement, the second deflection member
Part 14 pushes the first deflecting element 11 to left side by means of the second projection 16 with the interaction of the first projection 15.Once backstop
Element 12 reaches the second adjacent part 11b (Figure 11), then the first deflecting element 11 can not be moved farther leftward as, therefore promotes the
Two projections 16 slide in the first projection 15 and rejoined with it.This figure 12 illustrates.First deflecting element 11 and
Total distance of the transfer of two deflecting elements 14 is given by the distance between the first adjacent part 11a and the second adjacent part 11b.
In one embodiment (not shown), at least one position in the first adjacent part 11a and the second adjacent part 11b can change
Become, to provide the possibility of distance change.
Figure 13 shows that the arc extinguishing contact of the first arcing contact with deflection restriction element 8 refers to 4a section view, its
Middle arc extinguishing contact refers to 4a and is arranged between deflection restriction element 8 and longitudinal axis z.In together with this of Fig. 1 example, deflection limitation member
Part 11, which is arranged in the first nominal contact 3a and contacted with arc extinguishing, to be referred between 4a.In one embodiment, restriction element 8 is deflected radially
It is arranged to refer to 4a from arc extinguishing contact and be not more than 0.5cm.
Figure 14 shows that the arc extinguishing contact of the first arcing contact of another embodiment with deflection restriction element 8a refers to
4a section view.In this embodiment, deflection restriction element 8a is formed such that it matches arc extinguishing contact and refers to 4a as follows
Outer surface, as seen relative to longitudinal axis z.
Deflection restriction element 8 or 8a advantageously limit the radial deflection that arc extinguishing contact refers to 4a, refer to make to exceed at root
Refer to the risk minimization of the yield stress of material.In simple embodiment, deflection restriction element is the pipe 8 referred to around arc extinguishing contact
Or 8a, in other words the arc extinguishing around electrical switchgear 1 refer to cage.
Although presently preferred embodiment of the invention has shown and described, it is clearly understood that, the present invention is not
It is limited to this, but differently can embodies and put into practice in addition in the range of following claims.Therefore, term such as " preferred " or "
Specifically " or " especially " or " advantageously " etc. only represent optional and exemplary embodiment.
Claims (30)
1. for the contact arrangement of the electrical switchgear (1) with longitudinal axis (z), touched wherein the contact arrangement includes first
Point (3a, 4a) and the second contact (3b, 4b) of matching, wherein first contact, which includes at least one contact, refers to (3a, 4a),
Wherein for electrical switchgear described in closed and disconnected (1), the second contact of first contact and the matching
(3a,3b;4a, 4b) in it is at least one can it is mobile parallel to the longitudinal axis (z) and with another contact (3b, 3a;4b,
4a) cooperate,
It is characterized in that, there is provided deflector (6;7a;11,14), it is before or while the electrical switchgear (1) is closed
Refer to (3a, 4a) at least one contact that flexibly deflects in the radial direction away from the longitudinal axis (z),
Further, the deflector (7a) can refer to the pre- of (3a, 4a) parallel to the longitudinal axis (z) corresponding to the contact
The first position of first inflection point and corresponding to second contact (4b) end position the second place between move, in institute
First position is stated, when the electrical switchgear (1), which is in, disconnects construction, the contact refers to (3a, 4b) by the deflector
(7a) radially flexibly deflects relative to the longitudinal axis (z), in the second place, when the electrical switchgear
During in closed structure, the deflector (7a) does not deflect the contact and referred to (3a, 4a), and
The deflector (7a) is suitable to when the electrical switchgear (1) closes by second contact (4b) from described the
One position is moved to the second place.
2. contact arrangement according to claim 1, it is characterised in that at least one contact arrangement is or including arc extinguishing
Contact arrangement, first contact is or including the first arcing contact, it includes at least one arc extinguishing contact and referred to (4a), and institute
The second contact for stating matching is or the second arcing contact (4b) including matching.
3. contact arrangement according to claim 2, it is characterised in that it is relative that at least one arc extinguishing contact, which refers to (4a),
In the longitudinal axis (z) be concentrically formed arc extinguishing contact refer to cage multiple arc extinguishings contact refer to (4a).
4. contact arrangement according to claim 2, it is characterised in that for electrical switchgear described in closed and disconnected
(1), at least one in the arcing contact can be mobile parallel to the longitudinal axis (z) and assisted with another arcing contact
Make.
5. contact arrangement according to claim 1, it is characterised in that at least one contact arrangement is or including nominal
Contact arrangement, first contact be or including the first nominal contact, it include multiple Nominal contacts refer to (3a) and relative to
The longitudinal axis (z) is concentrically formed finger cage, and the second contact of the matching is or the second nominal contact including matching
(3b)。
6. contact arrangement according to claim 5, it is characterised in that for electrical switchgear described in closed and disconnected
(1), at least one in the nominal contact can be mobile parallel to the longitudinal axis (z) and assisted with another nominal contact
Make.
7. contact arrangement according to claim 1, it is characterised in that the deflector (6) is arranged in the longitudinal axis (z)
Refer to described contact between (3a, 4a).
8. according to the contact arrangement any one of claim 1-7, it is characterised in that the deflector (6;7a) adjoining is supported
Refer to (3a, 4a) by the contact, and when the electrical switchgear (1) is in and disconnects construction, relative to the longitudinal axis
(z) contact is radially flexibly deflected to refer to (3a, 4a).
9. contact arrangement according to claim 8, it is characterised in that the deflector (6;7a) have and be higher than the contact
Refer to the rigidity of (3a, 4a).
10. contact arrangement according to claim 8, it is characterised in that the contact arrangement is also included described in carrying at least
One contact refers to the finger supporting member (20) and the deflector (7a) of (4a).
11. contact arrangement according to claim 1, it is characterised in that referring to the advance of (3a, 4a) corresponding to the contact
The first position of inflection point, the deflector (7) abut against the contact and referred to (4a), and in the electrical switchgear
(1) contact is radially flexibly deflected relative to the longitudinal axis (z) when in the disconnection construction and refers to (4a),
Wherein further initially enter and referred to by multiple contacts after the arc extinguishing that (4a) formed refers to cage in second contact (4b), institute
State contact and refer to (4a) and be further deflected, until it reaches its last inflection point (4d), and
Wherein further in the second place of the end position corresponding to second contact (4b), the deflector (7a)
And the non deflected contact refers to (4a), and the contact refers to (4a) and only deflected by second contact (4b).
12. the contact arrangement according to claim 1 or 11, it is characterised in that provide spring (7b), it connects carrying institute
Finger supporting member (20) and the deflector (7a) that at least one contact refers to (4a) are stated,
Wherein described deflector (7a) is suitable to when the electrical switchgear closes by second contact (3b, 4b) from institute
State first position and be moved to the second place, and
Wherein described deflector (7a) is suitable to when the electrical switchgear disconnects by the spring (7b) from described second
Position is moved to the first position.
13. contact arrangement according to claim 12, it is characterised in that the deflector (7a) is star.
14. contact arrangement according to claim 12, it is characterised in that the spring (7b), which is arranged in, to be fixedly attached to
In the protection pipe (7c) of the deflector (7a).
15. for the contact arrangement of the electrical switchgear (1) with longitudinal axis (z), wherein the contact arrangement includes first
Contact (3a, 4a) and the second contact (3b, 4b) of matching, wherein first contact, which includes at least one contact, refers to (3a, 4a),
Wherein for electrical switchgear described in closed and disconnected (1), the second contact of first contact and the matching
(3a,3b;4a, 4b) in it is at least one can it is mobile parallel to the longitudinal axis (z) and with another contact (3b, 3a;4b,
4a) cooperate, it is characterised in that
Deflector (11,14) is provided, it is before or while the electrical switchgear (1) is closed away from the longitudinal axis
(z) at least one contact that flexibly deflects in the radial direction refers to (3a, 4a),
The electrical switchgear (1) also includes carrying the finger supporting member (20) that at least one contact refers to (3a, 4a), wherein
The deflector (11,14) includes：
(i) the first deflecting element (11), wherein it is described contact refer to (3a, 4a) be arranged in first deflecting element (11) with it is described
Between longitudinal axis (z), wherein first deflecting element (11) includes the first adjacent part (11a) and the second adjacent part
(11b), and
(ii) the second deflecting element (14) of the end of (3a, 4a) is referred to positioned at the contact, and
First deflecting element (11) and second deflecting element (14) are shaped as in the mutual shifting along the longitudinal axis (z)
Engaged during position each other, so as to promote second deflecting element (14) and the contact to refer to (3a, 4a) away from described longitudinal axis
(z)。
16. contact arrangement according to claim 15, it is characterised in that first deflecting element (11) is described electric
It is radially arranged in the disconnection construction of switching device to refer to (3a, 4a) into from the contact and be not more than 1cm.
17. contact arrangement according to claim 15, it is characterised in that the contact arrangement also includes stop element
(12), wherein first deflecting element (11) can be roughly parallel to the longitudinal axis (z) in first adjacent part
(11a) abuts against the first position of the stop element (12) and second adjacent part (11b) abuts against described stop
Moved between the second place of gear element (12).
18. contact arrangement according to claim 17, it is characterised in that the stop element (12) attaches to the finger branch
Bearing member (20).
19. contact arrangement according to claim 15, it is characterised in that first deflecting element (11) is included in it certainly
By first raised (15) at end, and second deflecting element (14) is included in second raised (16) of its free end,
Wherein described first raised (15) and second raised (16) are mutually handed in the disconnection construction of the electrical switchgear (1)
Mistake, and wherein described second raised (16) during the contact refers to the deflection of (3a, 4a) on described first raised (15)
Slide in face.
20. contact arrangement according to claim 15, it is characterised in that first deflecting element (11) and/or described
Second deflecting element (14) has the rigidity for referring to (3a, 4a) higher than at least one contact.
21. contact arrangement according to claim 15, it is characterised in that it is or arranged including arcing contact, and institute
Stating contact and referring to is or refers to (4a) including arc extinguishing contact, and/or it is or arranged including nominal contact, and the contact refers to
It is or refers to (3a) including Nominal contact.
22. according to the contact arrangement any one of claim 1-7 and 15-21, it is characterised in that provide deflection limitation
Element (8;8a), wherein the contact, which refers to (3a, 4a), is arranged in the deflection restriction element (8;8a) with the longitudinal axis (z) it
Between.
23. contact arrangement according to claim 22, it is characterised in that the deflection restriction element (8;8a) radially cloth
It is set to and refers to (3a, 4a) from least one contact and be not more than 0.5cm.
24. contact arrangement according to claim 22, it is characterised in that the deflection restriction element (8a) is as follows
Formed so that when being observed relative to the longitudinal axis (z), it matches the outer surface that the contact refers to (3a, 4a).
25. according to the contact arrangement any one of claim 1-7 and 15-21, it is characterised in that the deflector (6;
7a;11,14) steel or titanium are included.
26. according to the contact arrangement any one of claim 15-20, it is characterised in that it is or including arcing contact
Arrangement, and it is described contact refer to be or including arc extinguishing contact refer to (4a), and/or its be or including nominal contact arrange, and
And the contact refers to and is or refers to (3a) including Nominal contact.
27. contact arrangement according to claim 22, it is characterised in that the contact arrangement includes being formed indulges with described
Multiple contacts that the concentric contact of axis (z) refers to cage refer to (3a, 4a).
28. with longitudinal axis (z) and include the electricity of at least one contact arrangement according to any one of the preceding claims
Air cock device (1).
29. electrical switchgear (1) according to claim 28, it is characterised in that it is that earthing or grounding means, snap action connect
Ground device, circuit-breaker, generator circuit breaker, switching isolator, combined type isolator and earthed switch, or load are disconnected
Way switch.
30. the basis for closing the electrical switchgear (1) according to any one of claim 28 to claim 29
The method of the contact arrangement described in one in claim 1 to claim 27, comprises the following steps：
By means of the deflector (6;7a;11,14) at least one contact is radially deflected to refer to (3a, 4a), and
Connect second contact (3b, 4b) and the first contact (3a, 4a) of the deflection.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12192470.8 | 2012-11-13 | ||
| EP12192470 | 2012-11-13 | ||
| EP12193720 | 2012-11-22 | ||
| EP12193720.5 | 2012-11-22 | ||
| PCT/EP2013/073528 WO2014076040A1 (en) | 2012-11-13 | 2013-11-12 | Contact system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104995707A CN104995707A (en) | 2015-10-21 |
| CN104995707B true CN104995707B (en) | 2017-12-08 |
Family
ID=49582740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380059259.7A Active CN104995707B (en) | 2012-11-13 | 2013-11-12 | Contact system |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2920801B1 (en) |
| CN (1) | CN104995707B (en) |
| WO (1) | WO2014076040A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10002733B2 (en) * | 2016-03-02 | 2018-06-19 | General Electric Technology Gmbh | Internal tulip sleeve of the female arcing contact of a high voltage electric circuit breaker |
| CN114628193A (en) * | 2021-12-21 | 2022-06-14 | 平高集团有限公司 | Contact assembly of arc extinguish chamber and manufacturing method of moving arc contact of arc extinguish chamber |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH658932A5 (en) * | 1979-08-31 | 1986-12-15 | Licentia Gmbh | Contact device for switching apparatuses having high short-circuit currents |
| EP0951038A1 (en) * | 1998-04-14 | 1999-10-20 | Asea Brown Boveri AG | Arcing contact arrangement |
| CN1263633A (en) * | 1998-04-14 | 2000-08-16 | 阿西亚·布朗·勃法瑞股份公司 | Arcing switch device |
| CN102013356A (en) * | 2010-11-30 | 2011-04-13 | 中国西电电气股份有限公司 | Arc extinguish chambers of high voltage alternating current SF6 pot-type breaker |
| CN102306559A (en) * | 2011-09-02 | 2012-01-04 | 平高集团有限公司 | Movable and static contact connection assembly and high-voltage isolation grounding switch |
-
2013
- 2013-11-12 EP EP13789779.9A patent/EP2920801B1/en active Active
- 2013-11-12 WO PCT/EP2013/073528 patent/WO2014076040A1/en active Application Filing
- 2013-11-12 CN CN201380059259.7A patent/CN104995707B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH658932A5 (en) * | 1979-08-31 | 1986-12-15 | Licentia Gmbh | Contact device for switching apparatuses having high short-circuit currents |
| EP0951038A1 (en) * | 1998-04-14 | 1999-10-20 | Asea Brown Boveri AG | Arcing contact arrangement |
| CN1263633A (en) * | 1998-04-14 | 2000-08-16 | 阿西亚·布朗·勃法瑞股份公司 | Arcing switch device |
| CN102013356A (en) * | 2010-11-30 | 2011-04-13 | 中国西电电气股份有限公司 | Arc extinguish chambers of high voltage alternating current SF6 pot-type breaker |
| CN102306559A (en) * | 2011-09-02 | 2012-01-04 | 平高集团有限公司 | Movable and static contact connection assembly and high-voltage isolation grounding switch |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2920801A1 (en) | 2015-09-23 |
| EP2920801B1 (en) | 2016-09-07 |
| WO2014076040A1 (en) | 2014-05-22 |
| CN104995707A (en) | 2015-10-21 |
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