CN102610426A - Switchgear - Google Patents

Switchgear Download PDF

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Publication number
CN102610426A
CN102610426A CN201210018114XA CN201210018114A CN102610426A CN 102610426 A CN102610426 A CN 102610426A CN 201210018114X A CN201210018114X A CN 201210018114XA CN 201210018114 A CN201210018114 A CN 201210018114A CN 102610426 A CN102610426 A CN 102610426A
Authority
CN
China
Prior art keywords
lateral electrode
axle
electrode axle
switch
fixed side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201210018114XA
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Chinese (zh)
Other versions
CN102610426B (en
Inventor
佐藤纯一
浅利直纪
久保田信孝
竹井义博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
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Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of CN102610426A publication Critical patent/CN102610426A/en
Application granted granted Critical
Publication of CN102610426B publication Critical patent/CN102610426B/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/64—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid wherein the break is in gas
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear

Abstract

The invention provides a switchgear, wherein an engaged/disengaged electrode comprises a fixed side electrode part (1a) and a movable side electrode part (1b). The movable side electrode part (1b) comprises a movable side electrode shaft (11) freely and movably connected with an operation mechanism. The fixed side electrode part (1a) comprises a fixed side electrode shaft (4) capable of being engaged/disengaged from the movable side electrode shaft (11) and at a predetermined distance from the movable side electrode shaft (11), and an electrode push-out spring (9) arranged at the periphery of the fixed side electrode shaft (4).

Description

Switch
Technical field
Example of the present invention relates to the switch of the switching characteristic that can improve the such switch of isolating switch or on-load switch.
Background technology
In the past, the isolating switch in this switch was because therefore task different with circuit breaker, that do not have big electric current blocking used relatively more easy structure.But, require burden to compare the task of loop current or the charging current etc. of the little but several kilo-amperes of electric current with circuit breaker sometimes.In this case, perhaps produce magnetic field and drive electric arc, perhaps enclose SF6 gas, improve the technology of extinguishing arc ability and known by us.For example, there is the publication communique spy of Japan to open 2008-84717 communique (below be called patent documentation 1).
There is following problem in the switch of above-mentioned prior art.
Though drive consumption or damage etc. that the technology of electric arc can suppress contact or electrode etc., for the Control current path, it is complicated that electrode structure becomes, difficulties such as assembling operation.And, use SF6 gas (Sulfur or sulphur HexaFluoride, sulphur hexafluoride) though technology can reach the purpose of miniaturization through good insulation property, have to carry out strict management in the atmosphere in order not to be dispersed into.Therefore, even the expectation use and management is easy to be present in the damage that insulating gass such as dry gas in the atmosphere also can suppress to maximize, suppress contact etc., can reach the technology that improves the purpose that opens and closes characteristic.
Summary of the invention
In order to address the above problem, purpose is the switch that the insulating gas of a kind of use with environmental harmony will be provided, reach the purpose that improves the switching characteristic exactly in the present invention.
In order to reach above-mentioned purpose, the switch of example possesses following structure.That is, comprise fixed side electrode portion and with the relative movable lateral electrode portion of configuration of said fixing lateral electrode portion; The movable lateral electrode axle that above-mentioned movable lateral electrode portion has the freedom of movement that links with operating mechanism; Said fixing lateral electrode portion has: the fixed side electrode axle; Contact/separate between the top of this fixed side electrode axle and the above-mentioned movable lateral electrode axle, and mobile predetermined distance, electrode is released spring; Said fixing lateral electrode axle is released the above-mentioned movable lateral electrode axle one side ground application of force; With the energising contact, be configured in the periphery of said fixing lateral electrode axle, and contact/separate with the circumferential lateral surface of above-mentioned movable lateral electrode axle.
Description of drawings
Fig. 1 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 1;
Fig. 2 A, 2B are the cutaway view of the action of the switch of the explanation embodiment of the invention 1;
Fig. 3 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 2;
Fig. 4 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 3;
Fig. 5 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 4.
Description of reference numerals
1a. fixed side electrode portion; 1b. movable lateral electrode portion; 2. insulating vessel; 3. fixation side conductor; 4. fixed side electrode axle; 5. annular contact; 6. contact shoe; 7. finger-type contact; 8. spring seat board; 9. electrode is released spring; 10. fixation side guard shield; 11. movable lateral electrode axle; 12. movable side guard shield; 13. insulating gas; 14. insulation tunicle; 15. arc resistance parts; 16. magnetic
Embodiment
Embodiments of the invention are described with reference to the accompanying drawings.
[embodiment 1]
The switch of the embodiment of the invention 1 at first is described with reference to Fig. 1, Fig. 2 A and Fig. 2 B.Fig. 1 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 1, and Fig. 2 A is the cutaway view of the action of the switch of the explanation embodiment of the invention 1.In addition, each schemes to represent with solid line the primary structure of switch, and subsidiary structure is represented with phantom.
As shown in Figure 1, switch comprise the 1a of fixed side electrode portion that illustrates top and with the direction of principal axis of the 1a of the fixed side electrode portion movable lateral electrode 1b of portion of the diagram bottom of configuration relatively, they are set in the tubular insulating vessel of representing with phantom 2.
In the 1a of fixed side electrode portion, the ring-type fixation side conductor 3 that becomes a current path (current path) is fixed on an end of insulating vessel 2.The fixed side electrode axle 4 that axially moves freely predetermined distance extends through in the central opening hole of fixation side conductor 3 through annular contact 5.The contact shoe 6 of the tubular that fixed side electrode axle 4 runs through is fixed on the fixation side conductor 3.On the periphery top of contact shoe 6, be provided with a plurality of finger-type contacts 7 circlewise.
Spring seat board 8 is fixed on the pars intermedia of fixed side electrode axle 4.Between spring seat board 8 and fixation side conductor 3, be provided with the electrode release spring 9 that fixed side electrode axle 4 is gone out the ground application of force to the movable lateral electrode 1b of the portion thruster of diagram lower direction.Be provided with the fixation side guard shield (shield) 10 that is fixed on the tubular of representing with double dot dash line on the contact shoe 6 in the periphery of finger-type contact 7.
The movable 1b of lateral electrode portion is provided with movable lateral electrode axle 11, and the top of movable lateral electrode axle 11 contacts/separates with fixed side electrode axle 4, and this top becomes another current path; The side of the periphery of movable lateral electrode axle 11 contacts/separates with finger-type contact 7.Movable lateral electrode axle 11 freedoms of movement ground runs through the other end of insulating vessel 2, is connected with not shown operating mechanism.Be provided with the movable side guard shield 12 of the tubular of representing with double dot dash line that is fixed on insulating vessel 2 one sides in the periphery of movable lateral electrode axle 11.Be sealed with dry air, nitrogen, carbon dioxide etc. in the insulating vessel 2 and be present in the insulating gas 13 in the atmosphere.They are called environment are fit to gas.
Wherein, Fig. 1 representes the open-circuit condition of switch, and the top of fixed side electrode axle 4 is outstanding from finger-type contact 7 tops.Should the distance as A.And, little with the external diameter of the diameter fixed side electrode axle 4 of finger-type contact 7, suppose that the distance (radius part) from the inner peripheral surface to the outer peripheral face is B, then A＜B.The internal diameter of finger-type contact 7 is bigger slightly than the external diameter of movable lateral electrode axle 11, and finger-type contact 7 opens during contact, applies contact pressure.
Then with reference to Fig. 2 A and Fig. 2 B explanation fixed side electrode axle 4 and the movably action of lateral electrode axle 11.
Fig. 2 A representes closed circuit state, and the circumferential lateral surface of movable lateral electrode axle 11 contacts with finger-type contact 7, carries out the energising of principal current.In addition, a part is also switched between movable lateral electrode axle 11 tops and fixed side electrode axle 4 tops.Under the situation of open circuit, shown in Fig. 2 B, movable lateral electrode axle 11 is moved to the diagram lower direction.So, release at electrode under the effect of elastic force of spring 9, fixed side electrode axle 4 also moves to the diagram lower direction.Even movable lateral electrode axle 11 separates with finger-type contact 7, the top of movable lateral electrode axle 11 also contacts with the top of fixed side electrode axle 4.
If movable lateral electrode axle 11 is further moved to the diagram lower direction, then fixed side electrode axle 4 stops after giving prominence to distance A than finger-type contact 7, and separate with the top of movable lateral electrode axle 11 on the top of fixed side electrode axle 4, between them, produces electric arc.Though electric arc produces between the top of electrode axis 4,11, because the relation of A＜B, so electric arc is suppressed to finger-type contact 7 one sides' diffusion.If movable lateral electrode axle 11 is further moved to the diagram below, then the arc extinction between electrode axis 4,11 tops can become open-circuit condition shown in Figure 1.
When closed circuit, contact between the top of at first movable lateral electrode axle 11 and fixed side electrode axle 4, the circumferential lateral surface of following movable lateral electrode axle 11 contacts with finger-type contact 7.Therefore, pre-arcing (Pre-arcing) does not produce at finger-type contact 7 in electrode axis 4, generation between 11.
Like this at open circuit, can suppress the damage of electric arc when closed circuit to finger-type contact 7.If finger-type contact 7 damages, then electric field strength increases, and arc performance descends as a result.In addition, insulating gas 13 is owing to be to be present in the atmosphere, and therefore management easily.
If adopt the switch of embodiment 1; Owing to being provided with the fixed side electrode axle 4 that moves predetermined distance of when opening and closing, following movable lateral electrode axle 11; Therefore between the top of fixed side electrode axle 4 and movable lateral electrode axle 11, electric arc can be suppressed, the switching characteristic can be improved.
Though the foregoing description 1 usefulness forms the contact that the finger-type contact 7 of ring-type has been explained the 1a of fixed side electrode portion; But also can be the contact that a plurality of leaf springs is formed ring-type; For with the difference of itself and other contact (annular contact 5), be called energising contact with movable side contacts/separate.
[embodiment 2]
The switch of the embodiment of the invention 2 then is described with reference to Fig. 3.Fig. 3 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 2.In addition, this embodiment 2 is on the circumferential lateral surface of fixed side electrode axle, to be provided with the insulation tunicle with embodiment 1 different point.In Fig. 3, on the structure division identical, add identical Reference numeral, omit its detailed explanation with embodiment 1.
As shown in Figure 3, the spring seat board 8 of fixed side electrode axle 4 and the circumferential lateral surface between the top are provided with insulation tunicle 14.Has a stable on heating for example fluorine resin about insulation tunicle 14 used thickness 1mm.
If adopt the switch of the foregoing description 2, except the effect of embodiment 1, the electric arc of generation around going into, can further improve the switching characteristic to the side of fixed side electrode axle 4 in the time of can also preventing to open and close.
[embodiment 3]
The switch of the embodiment of the invention 3 then is described with reference to Fig. 4.Fig. 4 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 3.In addition, this embodiment 3 is to be provided with the arc resistance parts on the top of electrode axis with embodiment 2 different points.In Fig. 4, on the structure division identical, add identical Reference numeral with embodiment 2, omit its detailed explanation.
As shown in Figure 4, be respectively arranged with the arc resistance parts 15 that for example constitute on the top of fixed side electrode axle 4 and movable lateral electrode axle 11 by tungsten/copper alloy.And arc resistance parts 15 are the outstanding section semi-circular shape of central part.In addition, be arranged on through arc resistance parts 15 at least one of fixation side, movable side, thereby can have arc resistance.
If adopt the switch of the foregoing description 3, except the effect of embodiment 2,, therefore can further improve the switching characteristic because initial electric arc produces at arc resistance parts 15.
[embodiment 4]
The switch of the embodiment of the invention 4 then is described with reference to Fig. 5.Fig. 5 is the major part cutaway view of the structure of the switch of the expression embodiment of the invention 4.In addition, this embodiment 4 is on electrode axis, to be provided with magnetic with embodiment 3 different points.In Fig. 5, on the structure division identical, add identical Reference numeral, omit its detailed explanation with embodiment 3.
As shown in Figure 5, imbed the body 16 that is magnetic respectively on the fixed side electrode axle 4 and the top of movable lateral electrode axle 11.As required, on magnetic 16, also can make electric arc the insulation tunicle is not set from the teeth outwards for scratch start ground.In addition, be arranged on through magnetic 16 at least one of fixation side, movable side, thereby can make electric arc diffusion, driving.
If adopt the switch of the foregoing description 4, except the effect of embodiment 3, the enough magnetics 16 of ability suppress the action of electric arcs, can further improve the switching characteristic.
If adopt the above example of narrating, can improve the switching characteristics such as loop current of the task of becoming switch.
Although clear several examples of the present invention, but these examples propose as an example, do not limit the intention of invention scope.Their new example can be implemented with other various forms, in not exceeding the scope of inventing aim, can carry out various omissions, replacement and change.These examples and its distortion are included in scope of invention and the aim, and are included in the scope of the invention put down in writing in the claim scope and equalization thereof.

Claims (6)

1. switch comprises: fixed side electrode portion and with the movable lateral electrode portion of configuration relatively of said fixing lateral electrode portion;
The movable lateral electrode axle that above-mentioned movable lateral electrode portion has the freedom of movement that links with operating mechanism;
Said fixing lateral electrode portion has:
Contact/separate between the fixed side electrode axle, the top of this fixed side electrode axle and above-mentioned movable lateral electrode axle, and mobile predetermined distance,
Electrode is released spring, with said fixing lateral electrode axle release the above-mentioned movable lateral electrode axle one side ground application of force and
The energising contact is configured in the periphery of said fixing lateral electrode axle, and contacts/separate with the circumferential lateral surface of above-mentioned movable lateral electrode axle.
2. switch as claimed in claim 1, under open-circuit condition, the top of said fixing lateral electrode axle is projected into above-mentioned movable side energising axle one side than above-mentioned energising contact.
3. according to claim 1 or claim 2 switch; Under open-circuit condition; The distance of supposing the said fixing lateral electrode axle top more outstanding than above-mentioned energising contact is A, and the distance from the inner peripheral surface of above-mentioned energising contact to the outer peripheral face of said fixing lateral electrode axle is B, then A＜B.
4. according to claim 1 or claim 2 switch is provided with the insulation tunicle in the periphery of said fixing lateral electrode axle.
5. according to claim 1 or claim 2 switch is provided with the arc resistance parts at least one of the top of the top of said fixing lateral electrode axle and above-mentioned movable lateral electrode axle.
6. according to claim 1 or claim 2 switch is provided with magnetic at least one of the top of the top of said fixing lateral electrode axle and above-mentioned movable lateral electrode axle.
CN201210018114.XA 2011-01-19 2012-01-19 Switchgear Active CN102610426B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP008987/2011 2011-01-19
JP2011008987A JP5629589B2 (en) 2011-01-19 2011-01-19 Switch

Publications (2)

Publication Number Publication Date
CN102610426A true CN102610426A (en) 2012-07-25
CN102610426B CN102610426B (en) 2014-09-24

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Application Number Title Priority Date Filing Date
CN201210018114.XA Active CN102610426B (en) 2011-01-19 2012-01-19 Switchgear

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JP (1) JP5629589B2 (en)
KR (1) KR101300264B1 (en)
CN (1) CN102610426B (en)
IN (1) IN2012DE00134A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3441998A4 (en) * 2016-04-06 2019-02-27 Mitsubishi Electric Corporation Switch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101984197B1 (en) * 2017-12-11 2019-05-30 주식회사 스위코 Composite insulated switchgear circuit
GB201807484D0 (en) * 2018-05-08 2018-06-20 Douwe Egberts Bv Beverage preparation devices, apparatus and methods
GB2575486B (en) * 2018-07-12 2023-02-01 Douwe Egberts Bv Drip filter head and method
KR102150857B1 (en) 2020-03-16 2020-09-03 부흥시스템(주) Insulating disconnection switch breaker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530119A (en) * 1976-01-09 1978-10-25 Reyrolle Parsons Ltd High-voltage circuit breakers
RU2168787C2 (en) * 1999-06-29 2001-06-10 Электроэнергетическая ассоциация "Корпорация единый электроэнергетический комплекс" Gas-filled disconnecting switch of sulfur hexafluoride high-voltage metalclad switchgear

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Publication number Priority date Publication date Assignee Title
JPS5977743U (en) * 1982-11-17 1984-05-25 三菱電機株式会社 switch
DE9108589U1 (en) * 1991-07-09 1991-09-05 Siemens Ag, 8000 Muenchen, De
JPH05298967A (en) * 1992-04-24 1993-11-12 Mitsubishi Electric Corp Switch
JP2000030577A (en) * 1998-07-14 2000-01-28 Yaskawa Electric Corp Rotary arc type gas-blast circuit breaker
WO2003046940A1 (en) * 2001-11-29 2003-06-05 Matsushita Electric Works, Ltd. Elecromagnetic switching apparatus
TWI416568B (en) * 2008-06-30 2013-11-21 Hitachi Ltd Vacuum switch and vacuum switch mechanism
EP2221844B1 (en) * 2009-02-24 2013-10-09 ABB Technology AG Switching device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530119A (en) * 1976-01-09 1978-10-25 Reyrolle Parsons Ltd High-voltage circuit breakers
RU2168787C2 (en) * 1999-06-29 2001-06-10 Электроэнергетическая ассоциация "Корпорация единый электроэнергетический комплекс" Gas-filled disconnecting switch of sulfur hexafluoride high-voltage metalclad switchgear

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3441998A4 (en) * 2016-04-06 2019-02-27 Mitsubishi Electric Corporation Switch

Also Published As

Publication number Publication date
KR101300264B1 (en) 2013-08-23
IN2012DE00134A (en) 2015-05-15
JP2012151001A (en) 2012-08-09
JP5629589B2 (en) 2014-11-19
CN102610426B (en) 2014-09-24
KR20120084264A (en) 2012-07-27

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