CN113257616A - Double-break quick vacuum switch and working method - Google Patents
Double-break quick vacuum switch and working method Download PDFInfo
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- CN113257616A CN113257616A CN202110446043.2A CN202110446043A CN113257616A CN 113257616 A CN113257616 A CN 113257616A CN 202110446043 A CN202110446043 A CN 202110446043A CN 113257616 A CN113257616 A CN 113257616A
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- repulsion
- coil
- opening
- plate
- pull rod
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- 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
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a double-break fast vacuum switch and a working method thereof, wherein the vacuum switch comprises two vacuum arc extinguish chambers, two insulating pull rods and an operating mechanism, wherein the operating mechanism comprises a left repulsion plate, a right repulsion plate, a left opening coil, a right opening coil, a pin and a closing coil; the pin penetrates through the long holes on the upper connecting rods of the left repulsion plate and the right repulsion plate to connect the two repulsion plates; a closing coil is arranged at the middle connecting position of the left and right repulsion discs, a left and right opening coil is respectively arranged on the left and right repulsion discs, and one side of the two opening coils is connected in series. When the closing coil is electrified, the closing coil generates repulsion force on the repulsion plates at two sides, the two repulsion plates are pushed to move outwards at the same time, and the movable contact of the arc extinguish chamber is driven to close through the insulating pull rod; when the opening coils are electrified, the two opening coils simultaneously flow the same pulse current, the same electromagnetic repulsion force is generated on the two repulsion plates, the two repulsion plates are pushed by the insulating pull rod to simultaneously move towards the inner side, and the moving contact of the arc extinguish chamber is driven to open.
Description
Technical Field
The invention relates to the technical field of a rapid vacuum switch, in particular to a double-break rapid vacuum switch and a working method.
Background
The rapid vacuum switch has high switching-off speed and short switching-off time, and can greatly improve the capability of removing the power grid fault. The saturation effect of the vacuum limits the voltage class of the single break fast vacuum switch below 126 kV. The mode of adopting double break series connection is an effective way for improving the voltage of the rapid vacuum switch and the like. However, the existing double-break fast vacuum switch generally adopts a structure that a single mechanism drives a single arc extinguish chamber, which not only makes the whole circuit breaker large in floor area and high in manufacturing cost, but also makes the two breaks have the difference of different periods and stroke curves due to the dispersibility of the two operating mechanisms, which is not beneficial to the double-break fast vacuum switch to cut off fault current.
Disclosure of Invention
In order to solve the problems, the invention provides a double-break quick vacuum switch and a working method thereof, which can solve the problem of synchronous movement of the double-break quick vacuum switch on the basis of not increasing a switching-on and switching-off coil and have the advantages of simple and compact structure and low manufacturing cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a double-break quick vacuum switch comprises an operating mechanism 5, a left insulating pull rod 3 and a right insulating pull rod 4 which are connected to two ends of the operating mechanism 5, and a left vacuum arc-extinguishing chamber 1 and a right vacuum arc-extinguishing chamber 2 which are respectively connected to the outer ends of the left insulating pull rod 3 and the right insulating pull rod 4, wherein the operating mechanism 5 comprises a left repulsion plate 6 and a right repulsion plate 7, a left opening repulsion coil 9 and a right opening repulsion coil 10, a pin 8 and a closing repulsion coil 11; a left repulsion plate upper connecting rod 14 of the left repulsion plate 6 and a right repulsion plate upper connecting rod 15 of the right repulsion plate 7 are respectively provided with a long hole with the same size, a pin 8 penetrates through the two long holes to connect the left repulsion plate 6 and the right repulsion plate 7, and the pin 8 can freely slide in the long holes; a closing repulsion coil 11 is arranged at the middle connecting position of the left repulsion disk 6 and the right repulsion disk 7, a left opening repulsion coil 9 is arranged at the left side of the left repulsion disk 6, a right opening repulsion coil 10 is arranged at the right side of the right repulsion disk 7, and one sides of the left opening repulsion coil 9 and the right opening repulsion coil 10 are connected in series through a copper wire 16.
When the double-break quick vacuum switch works, a closing repulsion coil 11 is electrified, the closing coil 11 generates electromagnetic repulsion with the same size to a left repulsion plate 6 and a right repulsion plate 77, the left repulsion plate 6 is pushed to move leftwards and the right repulsion plate 7 is pushed to move rightwards, a pin 8 slides in a strip hole, and a left vacuum arc extinguish chamber moving contact 12 and a right vacuum arc extinguish chamber moving contact 13 are respectively driven to close through a left insulating pull rod 3 and a right insulating pull rod 4;
when the brake is opened, the left brake-opening repulsion coil 9 and the right brake-opening repulsion coil 10 are electrified, the two brake-opening coils simultaneously flow a same pulse current, electromagnetic repulsion with the same size is generated on the left repulsion plate 6 and the right repulsion plate 7, the left repulsion plate 6 is pulled to move rightwards, the right repulsion plate 7 is pulled to move leftwards, the pin 8 slides in the strip hole, and the left vacuum arc-extinguishing chamber moving contact 12 and the right vacuum arc-extinguishing chamber moving contact 13 are respectively driven to open through the left insulating pull rod 3 and the right insulating pull rod 4.
Compared with the prior art, the invention has the following advantages:
the quantity of the double-break switch operating mechanisms can be effectively reduced, the opening and closing synchronism of the two breaks of the double-break switch is improved, and the double-break switch operating mechanism is simple in structure, small in occupied area and compact in structure.
Drawings
Fig. 1 is a cross-sectional view (closing position) of the double-break quick vacuum switch of the present invention.
Fig. 2 is a sectional view (closing position) of the operating mechanism (without opening and closing coils) of the present invention.
Fig. 3 is a sectional top view (closing position) of the actuator (without the opening and closing coil) of the present invention.
Fig. 4 is a cross-sectional view (open position) of the dual-break quick vacuum switch of the present invention.
Fig. 5 is a sectional view (open position) of the actuator (without the opening and closing coil) according to the present invention.
Fig. 6 is a sectional top view (open position) of the actuator (without the opening and closing coil) of the present invention.
The vacuum switch comprises a left vacuum arc extinguish chamber 1, a right vacuum arc extinguish chamber 2, a left insulating pull rod 3, a right insulating pull rod 4, an operating mechanism 5, a left repulsion plate 6, a right repulsion plate 7, a pin 8, a left opening repulsion coil 9, a left opening repulsion coil 10, a closing repulsion coil 11, a left vacuum arc extinguish chamber moving contact 12, a right vacuum arc extinguish chamber moving contact 13, a left repulsion plate upper connecting rod 14 and a right repulsion plate upper connecting rod 15.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1, 2, 3, 4, 5 and 6, the double-break fast vacuum switch of the present invention comprises an operating mechanism 5, a left insulating pull rod 3 and a right insulating pull rod 4 connected to two ends of the operating mechanism 5, and a left vacuum arc-extinguishing chamber 1 and a right vacuum arc-extinguishing chamber 2 respectively connected to outer ends of the left insulating pull rod 3 and the right insulating pull rod 4, wherein the operating mechanism 5 comprises a left repulsive force disc 6 and a right repulsive force disc 7, a left opening repulsive force coil 9 and a right opening repulsive force coil 10, a pin 8 and a closing repulsive force coil 11; a left repulsion plate upper connecting rod 14 of the left repulsion plate 6 and a right repulsion plate upper connecting rod 15 of the right repulsion plate 7 are respectively provided with a long hole with the same size, a pin 8 penetrates through the two long holes to connect the left repulsion plate 6 and the right repulsion plate 7, and the pin 8 can freely slide in the long holes; a closing repulsion coil 11 is arranged at the middle connecting position of the left repulsion disk 6 and the right repulsion disk 7, a left opening repulsion coil 9 is arranged at the left side of the left repulsion disk 6, a right opening repulsion coil 10 is arranged at the right side of the right repulsion disk 7, and one sides of the left opening repulsion coil 9 and the right opening repulsion coil 10 are connected in series through a copper wire 16.
As shown in fig. 1, 2 and 3, when a closing operation is performed, a closing repulsive coil 11 is electrified, the closing coil 11 generates electromagnetic repulsive force with the same magnitude on a left repulsive force disc 6 and a right repulsive force disc 77, the left repulsive force disc 6 is pushed to move leftwards, the right repulsive force disc 7 moves rightwards, a pin 8 slides in a long hole, and a left vacuum arc-extinguishing chamber moving contact 12 and a right vacuum arc-extinguishing chamber moving contact 13 are respectively driven to close through a left insulating pull rod 3 and a right insulating pull rod 4;
as shown in fig. 4, 5 and 6, when the opening operation is performed, the left opening repulsive coil 9 and the right opening repulsive coil 10 are energized, the same pulse current flows through the two opening coils at the same time, the electromagnetic repulsive force with the same magnitude is generated on the left repulsive disc 6 and the right repulsive disc 7, the left repulsive disc 6 is pulled to move rightwards, the right repulsive disc 7 moves leftwards, the pin 8 slides in the elongated hole, and the left vacuum arc-extinguishing chamber moving contact 12 and the right vacuum arc-extinguishing chamber moving contact 13 are respectively driven by the left insulating pull rod 3 and the right insulating pull rod 4 to perform opening.
Claims (2)
1. A double-break quick vacuum switch is characterized by comprising an operating mechanism (5), a left insulating pull rod (3) and a right insulating pull rod (4) which are connected to two ends of the operating mechanism (5), and a left vacuum arc-extinguishing chamber (1) and a right vacuum arc-extinguishing chamber (2) which are respectively connected to the outer ends of the left insulating pull rod (3) and the right insulating pull rod (4), wherein the operating mechanism (5) comprises a left repulsion coil (6) and a right repulsion coil (7), a left opening repulsion coil (9) and a right opening repulsion coil (10), a pin (8) and a closing repulsion coil (11); a left repulsion plate upper connecting rod (14) of the left repulsion plate (6) and a right repulsion plate upper connecting rod (15) of the right repulsion plate (7) are respectively provided with a long hole with the same size, a pin (8) penetrates through the two long holes to connect the left repulsion plate (6) and the right repulsion plate (7), and the pin (8) can freely slide in the long holes; a closing repulsion coil (11) is arranged at the middle connecting position of the left repulsion plate (6) and the right repulsion plate (7), a left opening repulsion coil (9) is arranged on the left side of the left repulsion plate (6), a right opening repulsion coil (10) is arranged on the right side of the right repulsion plate (7), and one sides of the left opening repulsion coil (9) and the right opening repulsion coil (10) are connected in series through a copper wire (16).
2. The working method of the double-break fast vacuum switch of claim 1 is characterized in that when a closing operation is performed, a closing repulsion coil (11) is electrified, the closing coil (11) generates electromagnetic repulsion force with the same size for a left repulsion plate (6) and a right repulsion plate (7) (7), the left repulsion plate (6) is pushed to move leftwards, the right repulsion plate (7) is pushed to move rightwards, a pin (8) slides in a long hole, and a left vacuum moving contact arc extinguish chamber (12) and a right vacuum moving contact arc extinguish chamber (13) are respectively driven to close through a left insulating pull rod (3) and a right insulating pull rod (4);
when the brake is opened, the left brake-opening repulsion coil (9) and the right brake-opening repulsion coil (10) are electrified, the two brake-opening coils simultaneously flow a same pulse current, electromagnetic repulsion with the same size is generated on the left repulsion plate (6) and the right repulsion plate (7), the left repulsion plate (6) is pulled to move rightwards, the right repulsion plate (7) is pulled to move leftwards, the pin (8) slides in the strip hole, and the left vacuum arc-extinguishing chamber moving contact (12) and the right vacuum arc-extinguishing chamber moving contact (13) are respectively driven to open through the left insulating pull rod (3) and the right insulating pull rod (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446043.2A CN113257616A (en) | 2021-04-25 | 2021-04-25 | Double-break quick vacuum switch and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446043.2A CN113257616A (en) | 2021-04-25 | 2021-04-25 | Double-break quick vacuum switch and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113257616A true CN113257616A (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110446043.2A Pending CN113257616A (en) | 2021-04-25 | 2021-04-25 | Double-break quick vacuum switch and working method |
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| Country | Link |
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| CN (1) | CN113257616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116092845A (en) * | 2023-04-03 | 2023-05-09 | 宁波天安智能电网科技股份有限公司 | Series digital double-break high-voltage switch device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1125817A (en) * | 1997-07-04 | 1999-01-29 | Mitsubishi Electric Corp | Electromagnetic repulsion mechanism for switch |
| CN101483113A (en) * | 2008-01-07 | 2009-07-15 | 株式会社日立制作所 | Vacuum switchgear |
| US20170352507A1 (en) * | 2014-12-31 | 2017-12-07 | Hyosung Corporation | Electromagnetic repulsion actuator for circuit breaker |
-
2021
- 2021-04-25 CN CN202110446043.2A patent/CN113257616A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1125817A (en) * | 1997-07-04 | 1999-01-29 | Mitsubishi Electric Corp | Electromagnetic repulsion mechanism for switch |
| CN101483113A (en) * | 2008-01-07 | 2009-07-15 | 株式会社日立制作所 | Vacuum switchgear |
| US20170352507A1 (en) * | 2014-12-31 | 2017-12-07 | Hyosung Corporation | Electromagnetic repulsion actuator for circuit breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116092845A (en) * | 2023-04-03 | 2023-05-09 | 宁波天安智能电网科技股份有限公司 | Series digital double-break high-voltage switch device |
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Application publication date: 20210813 |