CN100386834C - Opening and closing device - Google Patents

Opening and closing device Download PDF

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Publication number
CN100386834C
CN100386834C CNB200510065066XA CN200510065066A CN100386834C CN 100386834 C CN100386834 C CN 100386834C CN B200510065066X A CNB200510065066X A CN B200510065066XA CN 200510065066 A CN200510065066 A CN 200510065066A CN 100386834 C CN100386834 C CN 100386834C
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CN
China
Prior art keywords
conductor
main circuit
contact
closing device
opening
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.)
Active
Application number
CNB200510065066XA
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Chinese (zh)
Other versions
CN1787146A (en
Inventor
后藤圭二
大川义博
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CN1787146A publication Critical patent/CN1787146A/en
Application granted granted Critical
Publication of CN100386834C publication Critical patent/CN100386834C/en
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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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum 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
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • 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
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • 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
    • 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
    • H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
    • 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
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6665—Details concerning the mounting or supporting of the individual vacuum bottles
    • 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
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H2033/6667—Details concerning lever type driving rod arrangements

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Trip Switchboards (AREA)
  • Patch Boards (AREA)
  • Contacts (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

Disclosed is a switching apparatus, of which the weight increase is suppressed and the heat radiating effect is good, is provided with a main circuit conductor which is easy to assemble. The switching apparatus is constructed by connecting an upper main circuit conductor (11) to the side of fixed contact (1a) of vacuum switch tube (1) through upper terminal, and connecting a lower main circuit conductor (15) to the side of movable contact, and the whole assembly is carried on a truck frame (3). Both main circuit conductors (11, 15) are constituted with a conductor (17) in closed-ended cylinder having a bolt hole (17) axially passing through the bottom thereof, and a contactor provided on the open end of conductor (17), and upper terminal and lower terminal (14) are connected by a bolt (19) inserted into conductor (17) from open end side.

Description

Opening and closing device
Technical field
The present invention relates to for example be applicable to the electric power opening and closing device that is subjected to controller switching equipment etc., especially relate to its main circuit conductor structure.Among the present invention, comprise cut-off in the opening and closing device.
Background technology
Opening and closing device in the past, for example, as shown in Figure 4, using as opening and closing device in the vacuum interruption device of vacuum valve (being equivalent to vacuum switch tube of the present invention), the fixed electrode rod 41a that derives from the fixed electrode side of vacuum valve 41 is fixed in and is insulated on the fixing conductor 43 of framework 42 supportings, this conductor 43 is connected with bar-shaped conductor 46a (being equivalent to main circuit conductor of the present invention) by major loop terminal 44, and this conductor 46a has the connector 45a that is connected usefulness with the bus of distribution board side in front.On the other hand, the movable lateral electrode rod 41b of vacuum valve 41 is connected with major loop terminal 48 by flexible conductor 47, and the rod-shaped conductor 46b that front end has connector 45b is connected (with reference to patent documentation 1) with this major loop terminal 48.
[patent documentation 1] Japanese patent laid-open 6-208821 communique (the 2nd page, Fig. 1)
In the above-mentioned vacuum interruption device, the connector that is arranged on the conductor front end for the bus with the distribution board side is connected is made of the finger-like contact, and this contact site is big because of the sliding contact contact resistance, and compare heating with other parts big.As increase contact area in order to suppress heating, then need to strengthen the external diameter of the conductor that contacts with contact, but as increasing external diameter, correspondingly weight increases, and also has the problem of conductor installation exercise difficulty.
Summary of the invention
The present invention proposes in order to address the above problem, its purpose be to provide a kind of have can suppress that weight increases, good heat dissipation effect, the assembling operation opening and closing device of main circuit conductor easily simultaneously.
Opening and closing device of the present invention, but setting be connected with a pair of major loop portion contact separation ground that opens circuit on being arranged on distribution board, comprising: vacuum switch tube with fixed contact and travelling contact; The upper terminal that is connected with the fixed contact side; One end is connected with upper terminal, the other end with open circuit a top main circuit conductor that is connected in the portion of a pair of major loop; The lower terminal that is connected with the travelling contact side by the flexible conductor; And one end be connected with lower terminal, the other end and a pair of major loop open circuit another the bottom main circuit conductor that is connected in the portion, two main circuit conductors by be the conductor portion that bottom tube-like is arranged and have the bolt hole of axial perforation in the bottom, the contact that is arranged on the open end of conductor portion constitutes, be connected with upper terminal and lower terminal respectively by the bolt that inserts in the conductor portion from the open end side.
Adopt opening and closing device of the present invention, with top main circuit conductor and bottom main circuit conductor with the bottom have the conductor portion that bottom tube-like is arranged of bolt hole, the contact that is arranged on the open end of conductor portion constitutes, be connected with upper terminal and lower terminal respectively by the bolt that inserts from the open end side, thereby at the external diameter that suppresses to increase when weight increases conductor portion, guarantee required contact area, but also can increase area of dissipation.Therefore, can provide and have light weight, good heat dissipation effect, can tackle the opening and closing device of the main circuit conductor of big electric current.
In addition, to the installation exercise of upper terminal and lower terminal, can carry out from the open end side of main circuit conductor, so the assembling operation of main circuit conductor is easy.
Description of drawings
Fig. 1 is the front view of the opening and closing device of expression example 1 of the present invention.
Fig. 2 is the top main circuit conductor of opening and closing device of expression example 1 of the present invention and the figure of bottom main circuit conductor.
Fig. 3 is the figure of other examples of main circuit conductor of the opening and closing device of expression example 1 of the present invention.
Fig. 4 is a front view of representing opening and closing device in the past.
Embodiment
[example 1]
Fig. 1 is the front view of the opening and closing device of expression example 1 of the present invention, and biopsy cavity marker devices is represented inside.The opening and closing device of this example is that example describes with the situation that vacuum switch tube is applied to the opening and closing device main body.
As shown in the figure, vacuum switch tube 1 puts on the chassis framework 3 of the band wheel that contains operating mechanism 2, but is connected setting with a pair of major loop portion 32, the 35 contact separations ground that opens circuit on being arranged on distribution board 31 described later.Output from operating mechanism 2 is passed to insulating bar 6 through output connecting rod 4, transverse arm 5.Vacuum switch tube 1 has fixed contact 1a and travelling contact 1b.Upper terminal 9 is connected with the fixed electrode rod 7 of deriving from fixed contact 1a with top tie plate 8, and top tie plate 8 supports by insulator support spare 10 and is fixed on the chassis framework 3.In addition, an end of top described later main circuit conductor 11 is connected with upper terminal 9.
On the other hand, the travelling contact 1b side of vacuum switch tube 1 is by (Japanese: cut node) the 12 flexible conductors 13 that connect maintenance are connected with lower terminal 14 by the split terminal.One of lower terminal 14 distolaterally is fixed on the chassis framework 3 by insulator support spare 10, and another is distolateral to be connected with an end of bottom main circuit conductor 15.Insulating bar 6 is connected with travelling contact 1b, by the output of operating mechanism 2 travelling contact 1b is driven, travelling contact 1b and fixed contact 1a contact separation, and realization is as the function of opening and closing device.Insulated support 16 is clipped between upper terminal 9 and the lower terminal 14, and they are kept.
Then, the detailed structure to top main circuit conductor 11 and bottom main circuit conductor 15 describes.Both sides are identical structures.Fig. 2 is the figure of expression top main circuit conductor 11 and bottom main circuit conductor 15, (a) is that the master looks cutaway view, (b) is right side view.As shown in the figure, constitute by the conductor portion 17 that is the bolt hole 17a that bottom tube-like is arranged and have axial perforation in the bottom, the contact 18 that is arranged on the open end of conductor portion 17.Contact 18 is made of the tabular component of the shape shown in the cross section of figure (a), and shown in figure (b), a plurality of in the circumferencial direction arrangement, its periphery is fastening by spring.A side of 2 juts of all sides engages with the recess that is arranged on conductor portion 17 sides in being arranged on becomes turning circuit.The open circuit bonding conductor sliding contact of portion's side of the opposing party's jut 18a and major loop.The number of bolt hole 17a is not limited to 4, can suitably select according to the size of conductor portion 17.
The air vent hole 17b of cooling usefulness is set on conductor portion 17.The number of this air vent hole 17b can consider that the size of conductor and the caloric value of the conductor that powered-on capacity causes decide, and can only be provided with when needed.
The situation that top main circuit conductor 11 and bottom main circuit conductor 15 are installed on the opening and closing device main body side describes below.As shown in Figure 1, end face in upper terminal 9 and lower terminal 14 is provided with screw, the bolt hole 17a of the conductor portion 17 of main circuit conductor side aligns with this screw, bolt 19 is inserted inner space and fastening from the open end side of conductor portion 17, thereby be connected and fixed with upper terminal 9 and lower terminal 14.
So the top main circuit conductor 11 and the bottom main circuit conductor 15 of the opening and closing device after the assembling as shown in Figure 1, are connected with a pair of major loop that the is arranged on distribution board 31 sides portion 32,35 that opens circuit.Major loop open circuit that portion 32 is arranged on by perforation on the face of distribution board 31 and by insulating material form the lining 33 of tubular, the bonding conductors 34 that remain in this lining 33 constitute.Equally, the major loop portion 35 that opens circuit is made of lining 36 and bonding conductor 37. Bonding conductor 34,37 is connected with the bus of not shown distribution board 31 sides.
By being loaded in the opening and closing device that constituted on the chassis framework 3 towards distribution board 31 side shiftings and push the major loop portion 32,35 that opens circuit, the contact 18 of main circuit conductor 11,15 being slided with bonding conductor 34,37 insert and be electrically connected.
Then, effect is described.For example, when being that the heating of conducting parts is quite big, becomes high temperature when having the opening and closing device of electrical current of the big electric current such above kiloampere.Under the "on" position of opening and closing device, resistance position big, that heating is maximum is the contact site of contact.That is, be the contact portion of the contact 18 of main circuit conductor 11,15 up and down.In order to suppress the heating of this part, need the diameter of the contact site of increase contact 18, strengthen contact area, increase powered-on capacity.As increase the diameter of contact site, and the diameter of inevitable conductor portion 17 also increases, and weight also increases.For this reason, as this example, by making hollow structure, in the diameter of guaranteeing required contact site, but weight reduction and add high surface area (area of dissipation).In addition, can utilize hollow bulb from the open end side fastening bolt.
So far, as top and bottom main circuit conductor 11,15, be linearly to have the shape of bottom tube-like to be illustrated to conductor portion, and Fig. 3 is the figure of other examples of main circuit conductor.Figure (a) is main cutaway view, (b) is right side view.As shown in the figure, main circuit conductor 20 is made of conductor portion 21 and contact 18.Contact 18 is equal with Fig. 2, and the Therefore, omited is to the explanation of this part.Conductor portion 21 forms taper, and the external diameter that makes its bottom side is provided with bolt hole 21a less than the open end side in the bottom.
Such as previously described, under the "on" position of opening and closing device, the position that generates heat most is the contact site of contact.The bottom of main circuit conductor is firmly fastened on the terminal of the other side's side by bolt, so the current capacity of contact-making surface is big, therefore, can makes bottom side compare conductor diameter with the open end side with contact and reduce.Utilize this characteristics, make the main circuit conductor of the such shape of Fig. 3.As the structure adopting, can further alleviate its weight.
The number of bottom bolt hole 21a can suitably be selected according to powered-on capacity and conductor portion size.In addition, identical with the main circuit conductor 11,15 of Fig. 2, also can air vent hole be set in conductor portion 21.
As mentioned above, adopt the invention of this example, make top main circuit conductor that is connected with the upper terminal of opening and closing device and the bottom main circuit conductor that is connected with lower terminal, by being the conductor portion that bottom tube-like is arranged and have the bolt hole of axial perforation in the bottom, the contact that is arranged on the open end of conductor portion constitutes, be connected with upper terminal and lower terminal respectively by the bolt that inserts in the conductor portion from the open end side, can need when having the energising of big electric current the main circuit conductor of the contact site of big contact area to make and suppress to increase external diameter under the situation that weight increases, guarantee the shape of contact area, and can increase area of dissipation, have light weight so can provide, the opening and closing device of the main circuit conductor of good heat dissipation effect.
And, because main circuit conductor can be connected and fixed from open end side and the other side's side terminal, so can improve the operation in when assembling.And fastening bolt does not expose, so electric field can not concentrate on bolt part.
In addition, it is little that the external diameter of the conductor portion of top main circuit conductor and bottom main circuit conductor is made bottom side ratio open end side, thus except above-mentioned effect with the further weight reduction of external enwergy.
And the conductor portion of top main circuit conductor and bottom main circuit conductor is provided with the air vent hole of cooling usefulness, so by the air vent hole ventilation, the circulation of heat improves, the temperature that can suppress main circuit conductor rises.
[possibility of utilizing on the industry]
But can be widely used in the circuit that is arranged on high-voltage large current, with the contact separation of major loop bus The opening and closing device of ground configuration.

Claims (3)

1. opening and closing device, but be connected setting to contact separation with a pair of major loop portion that opens circuit on being arranged on distribution board, it is characterized in that, comprising: vacuum switch tube with fixed contact and travelling contact; The upper terminal that is connected with described fixed contact side; A top main circuit conductor that is connected in one end is connected with described upper terminal, the other end and described a pair of major loop the open circuit portion; The lower terminal that is connected with described travelling contact side by the flexible conductor; And one end be connected with described lower terminal, the other end and described a pair of major loop open circuit another the bottom main circuit conductor that is connected in the portion, described two main circuit conductors are made of conductor portion that is the bolt hole that bottom tube-like is arranged and have axial perforation in the bottom and the contact that is arranged on the open end of this conductor portion, are connected with described upper terminal and described lower terminal respectively by the bolt that inserts in the described conductor portion from described open end side.
2. opening and closing device as claimed in claim 1 is characterized in that, it is littler than described open end side that the external diameter of the described conductor portion of described top main circuit conductor and described bottom main circuit conductor is made described bottom side.
3. as claim 1 or the described opening and closing device of claim 2, it is characterized in that, on the described conductor portion of described top main circuit conductor and described bottom main circuit conductor, be provided with the air vent hole of cooling usefulness.
CNB200510065066XA 2004-12-09 2005-04-11 Opening and closing device Active CN100386834C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004356882A JP4606146B2 (en) 2004-12-09 2004-12-09 Switchgear
JP2004356882 2004-12-09

Publications (2)

Publication Number Publication Date
CN1787146A CN1787146A (en) 2006-06-14
CN100386834C true CN100386834C (en) 2008-05-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNB200510065066XA Active CN100386834C (en) 2004-12-09 2005-04-11 Opening and closing device

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JP (1) JP4606146B2 (en)
KR (1) KR100625225B1 (en)
CN (1) CN100386834C (en)
TW (1) TWI253666B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733220A (en) * 2013-12-20 2015-06-24 Ls产电株式会社 Terminal structure of main circuit part of vacuum circuit breaker

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JP5210582B2 (en) * 2007-09-27 2013-06-12 株式会社日立製作所 Vacuum switchgear
WO2009079871A1 (en) * 2007-12-07 2009-07-02 Abb (China) Limited Circuit breaker with a heat dissipating means
CN102017039B (en) * 2007-12-07 2014-04-02 Abb技术有限公司 Heat dissipating means for circuit-breaker and circuit-breaker with such heat dissipating means
CN101320653B (en) * 2008-07-22 2010-12-01 沈阳飞驰电气设备有限公司 Handcart type vacuum circuit breaker
KR101100705B1 (en) 2009-10-28 2011-12-30 엘에스산전 주식회사 Vacuum circuit breaker having mechanism for absorbing impact on mold housing due to electro magnetic force applied by adjacent busbar type terminals
EP2346060B1 (en) * 2010-01-18 2012-11-07 ABB Technology AG Medium voltage circuit breaker.
CN102262975A (en) * 2010-05-26 2011-11-30 沈阳飞驰电气设备有限公司 Heavy current vacuum circuit breaker
CN101937793B (en) * 2010-09-10 2011-07-27 湖北网安科技有限公司 Compact handcart type sealed insulating pole horizontal permanent magnetic vacuum breaker
WO2012066792A1 (en) * 2010-11-18 2012-05-24 三菱電機株式会社 Bushing
CN103247939A (en) * 2012-12-25 2013-08-14 安徽鑫龙电器股份有限公司 Contact box of high-voltage switch cabinet
CN106531541B (en) * 2016-12-16 2018-06-29 中国西电电气股份有限公司 A kind of vacuum switch module of nitrogen gas insulating ring main unit
KR102328708B1 (en) 2021-04-13 2021-11-22 선도전기주식회사 Structure of a cart for equipment inside the switchboard

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CN104733220A (en) * 2013-12-20 2015-06-24 Ls产电株式会社 Terminal structure of main circuit part of vacuum circuit breaker
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Also Published As

Publication number Publication date
KR20060065437A (en) 2006-06-14
JP2006166651A (en) 2006-06-22
JP4606146B2 (en) 2011-01-05
CN1787146A (en) 2006-06-14
TWI253666B (en) 2006-04-21
TW200620360A (en) 2006-06-16
KR100625225B1 (en) 2006-09-20

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