CN111477519B - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN111477519B CN111477519B CN202010345877.XA CN202010345877A CN111477519B CN 111477519 B CN111477519 B CN 111477519B CN 202010345877 A CN202010345877 A CN 202010345877A CN 111477519 B CN111477519 B CN 111477519B
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- hook
- vacuum
- spring
- magnet
- fixing plate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1072—Release mechanisms which are reset by opening movement of contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
Abstract
A vacuum circuit breaker comprises a wire access hole, a vacuum connection mechanism and a buckle mechanism, wherein the vacuum connection mechanism is connected between the wire access hole and the wire access hole; a sliding rod is arranged in the arc extinguish chamber, a movable contact block is slidably arranged on the sliding rod, and the movable contact block is arranged between the two stationary contacts; a contact groove is arranged on the side surface of the movable contact block, which is contacted with the fixed contact, and an armature is arranged below the movable contact block; the spring is arranged on the movable contact block and generates pulling force to enable the connecting groove to be connected with the static contact; in order to solve the problems, the invention provides a vacuum circuit breaker, wherein an external magnet absorbs an armature inside an arc extinguish chamber to complete external drive power-off, the arc extinguish chamber is a closed pipe, and a connecting column is hermetically connected with the arc extinguish chamber to reduce the opening of the arc extinguish chamber, so that the sealing performance of the arc extinguish chamber is ensured.
Description
Technical Field
The invention relates to the technical field of industrial electricity and circuit breakers, in particular to a vacuum circuit breaker.
Background
The vacuum circuit breaker means that arc extinguishing media and insulating media of a contact gap after arc extinguishing are both high vacuum; existing circuit breakers are for example: the chinese patent No. 2016102325011 discloses a vacuum circuit breaker, which comprises a moving end conducting rod and a conductive support cylinder, wherein a spring assembly for driving the moving end conducting rod is arranged in the conductive support cylinder, the spring assembly comprises a spring cylinder, the spring cylinder is fixedly connected with the moving end conducting rod, the spring cylinder is assembled in the conductive support cylinder in a guiding manner, and the vacuum circuit breaker is powered on by driving a contact by pushing an insulating pull rod and then driving the moving end conducting rod to drive a moving head and a fixed head to contact through a spring; because the movable end conducting rod enters and exits in the vacuum arc-extinguishing chamber, the sealing failure of the vacuum arc-extinguishing chamber cannot achieve the vacuum effect.
Therefore, there is a need for a movable contact in an arc extinguish chamber, which can be driven to complete the connection and disconnection of the movable contact and the fixed contact by applying force from the outside, so as to reduce the opening of the arc extinguish chamber and further reduce the failure of the arc extinguish chamber.
Disclosure of Invention
In order to solve the problems, the invention provides a vacuum circuit breaker, wherein an external magnet absorbs an armature inside an arc extinguish chamber to complete external drive power-off, the arc extinguish chamber is a closed pipe, and a connecting column is hermetically connected with the arc extinguish chamber to reduce the opening of the arc extinguish chamber, so that the sealing performance of the arc extinguish chamber is ensured.
The technical scheme adopted by the invention is as follows: a vacuum circuit breaker is characterized by comprising a wire access hole, a vacuum connection mechanism and a buckle mechanism, wherein the vacuum connection mechanism is connected between the wire access hole and the wire access hole;
the vacuum connection mechanism comprises an arc extinguish chamber, a connection column, a fixed contact, a sliding rod, a spring, a movable contact block, a connection groove and an armature; the switching-on columns are hermetically arranged at two ends of the arc extinguish chamber, and the inner sides of the switching-on columns are provided with static contacts; a sliding rod is arranged in the arc extinguish chamber, a movable contact block is slidably arranged on the sliding rod, and the movable contact block is arranged between the two stationary contacts; a contact groove is arranged on the side surface of the movable contact block, which is contacted with the fixed contact, and an armature is arranged below the movable contact block; the spring is arranged on the movable contact block and generates pulling force to enable the connecting groove to be connected with the static contact;
the buckling mechanism comprises a magnet fixing plate, a magnet fixing plate spring, a hook and a hook, wherein the magnet and the hook are arranged on the magnet fixing plate; the hook is connected with the hook in a clamping way; the hook and the hook are disconnected, the magnet fixing plate and the magnet move towards the vacuum connection mechanism under the elastic force of the spring of the magnet fixing plate, and when the magnet and the vacuum connection mechanism approach a certain distance, the magnet absorbs the armature through the magnetic force generated by the magnet to pull the contact block to move downwards so as to disconnect the connection groove and the static contact to complete power failure; reducing the opening of the arc extinguish chamber.
Further, the arc extinguish chamber is a closed pipe, and the connecting column is hermetically connected with the arc extinguish chamber.
Furthermore, the buckling mechanism comprises a magnet fixing plate, a magnet, an inclined groove, a magnet fixing plate spring, a hook spring, an armature, a connecting rod and a clamping plate, wherein the armature and the connecting rod are arranged on the hook, and the clamping plate and the armature are arranged on the connecting rod; an inclined groove is arranged on the magnet fixing plate; the hook spring is arranged on the side surface of the hook; the hook spring generates elastic force to make the hook move towards the direction of the hook; the distance between the magnet and the vacuum connection mechanism is controlled by controlling the movement of the hook, so that the on-off of the vacuum connection mechanism is controlled.
The connecting wire is fixed in the wiring terminal through the internal electric wire screwing screw; the external wire is connected into the terminal through the wire access hole and the wire access hole; the external wire is tightened by an external wire tightening screw.
Further, the device also comprises an undervoltage release and an overvoltage release; the undervoltage release and the overvoltage release are connected into a circuit, and whether the circuit voltage is stable or not is detected through the undervoltage release and the overvoltage release.
Furthermore, the clamping device comprises a pushing block groove and a pushing block, wherein the pushing block is slidably arranged in the pushing block groove, a spring is arranged on the pushing block, and the spring enables the pushing block to move towards the direction of the clamping mechanism; when the circuit voltage is overhigh, the overvoltage release generates magnetic force to absorb the armature so as to move the hook to separate the hook, thereby powering off the vacuum switch-on mechanism; when the circuit voltage is too low, the magnetic force generated by the undervoltage release is low, the pushing block moves towards the direction of the buckle mechanism under the action of the spring to push the hook to separate the hook, so that the vacuum switch-on mechanism is powered off.
Further, still include bimetallic strip and overcurrent release.
Further, the bimetallic strip and the overcurrent release are connected into an internal circuit to detect the heating and current of the circuit.
Furthermore, the device also comprises a bottom plate, a cover plate, a reset button and a side plate; a reset button is arranged on the cover plate and is in sliding connection with the inclined groove of the buckle mechanism; the bottom plate, the cover plate and the side plate form a breaker shell.
Furthermore, the vacuum switch-on device is characterized in that the buckle mechanism, the vacuum switch-on mechanism, the undervoltage release, the overvoltage release, the bimetallic strip and the overcurrent release are connected into a circuit through connecting wires.
The invention has the beneficial effects that:
1. the armature inside the arc extinguish chamber is sucked by an external magnet to complete external drive power-off, the arc extinguish chamber is a closed pipe, the switch-on column is in sealing connection with the arc extinguish chamber to reduce the opening of the arc extinguish chamber, and the sealing performance of the arc extinguish chamber is further ensured.
2. When the voltage, the current and the generated heat of the circuit are overhigh, the buckling mechanism is controlled by the undervoltage release, the pressure release, the bimetallic strip and the overcurrent release so as to control the on-off of the vacuum switch-on mechanism, and the protection circuit is played.
3. Through the reset button, manual reset is carried out, so that the circuit breaker can be repeatedly used and quickly recovered to be used.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2, fig. 3, fig. 4 and fig. 5 are partial structural schematic diagrams of the present invention.
Fig. 6 is a schematic structural view of the fastening mechanism of the present invention.
Fig. 7 is a schematic structural view of the vacuum switch-on mechanism of the present invention.
Fig. 8 is a schematic cross-sectional view of the vacuum switch-on mechanism of the present invention.
Reference numerals: 1-cover plate, 2-reset button, 3-side plate, 4-wire access hole, 5-wire access hole, 6-buckle mechanism, 7-external wire screw, 8-internal wire screw, 9-vacuum switch-on mechanism, 10-terminal, 11-bottom plate, 12-connecting wire, 13-undervoltage release, 14-push block groove, 15-push block, 16-overvoltage release, 17-bimetallic strip, 18-overcurrent release, 19-chute, 20-buckle mechanism mounting plate, 601-magnet fixing plate, 602-magnet, 603-inclined groove, 604-magnet fixing plate spring, 605-hook, 606-hook, 607-hook spring, 608-armature, 609-connecting rod, etc, 610-clamping plate, 901-connecting plate, 902-arc extinguish chamber, 903-connecting column, 904-stationary contact, 905-sliding rod, 906-spring, 907-moving contact block, 908-connecting groove and 909-groove.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Referring to fig. 1, 2, 3, 4, 5, 6, 7 and 8, a vacuum circuit breaker includes a wire access hole 4, a wire access hole 5, a vacuum connection mechanism 9 and a latch mechanism 6, wherein the vacuum connection mechanism 9 is connected between the wire access hole 4 and the wire access hole 5; the vacuum connection mechanism 9 is used for switching off and connecting, and preventing fire caused by electric sparks generated at the moment of connection;
the vacuum connection mechanism 9 comprises an arc extinguish chamber 902, a connection column 903, a fixed contact 904, a sliding rod 905, a spring 906, a movable contact block 907, a connection groove 908, a groove 909 and an armature 608; the connecting column 903 is hermetically arranged at two ends of the arc extinguish chamber 902, and a static contact 904 is arranged on the inner side of the connecting column 903; a sliding rod 905 is arranged in the arc extinguish chamber 902, a moving contact block 907 is slidably mounted on the sliding rod 905, and the moving contact block 907 is mounted between the two fixed contacts 904; a contact groove 908 is arranged at the side of the movable contact block 907 contacted with the fixed contact 904, and an armature 608 is arranged below the movable contact block 907; the spring 906 is arranged on the movable contact block 907, and the spring 906 generates pulling force to make the contact groove 908 contact with the fixed contact 904; specifically, a vacuum contact space is formed by the arc extinguish chamber 902 and the connecting column 903, and a circuit is completed by the joint of the connecting groove 908 of the movable contact block 907 and the fixed contact 904; specifically, a connecting plate 901 is arranged on the side surface of the arc extinguish chamber 902, and the connecting plate 901 is used for fixing the vacuum connection mechanism 9; a groove 909 is arranged on the side surface of the connecting plate 901;
the fastening mechanism 6 comprises a magnet fixing plate 601, a magnet 602, a magnet fixing plate spring 604, a hook 605 and a hook 606, wherein the magnet 602 and the hook 605 are arranged on the magnet fixing plate 601, one end of the magnet fixing plate spring 604 is fixedly connected with the magnet fixing plate 601, and the magnet fixing plate spring 604 generates elasticity to enable the magnet fixing plate 601 to be far away from the hook 606; the hook 606 is clamped and connected with the hook 605; the hook 605 and the hook 606 are disconnected, the magnet fixing plate 601 and the magnet 602 move towards the vacuum connection mechanism 9 under the elastic force of the magnet fixing plate spring 604, when the magnet 602 approaches a certain distance from the vacuum connection mechanism 9, the magnet 602 generates magnetic force to suck the armature 608 and further pull the contact block 907 to move downwards to disconnect the connection groove 908 from the stationary contact 904, so that power failure is completed; specifically, the armature 608 is sucked by the magnet 602 to complete external drive power failure, the arc extinguish chamber 902 is a closed tube, and the connecting column 903 is hermetically connected with the arc extinguish chamber 902 to reduce the opening of the arc extinguish chamber 902, so that the sealing performance of the arc extinguish chamber 902 is ensured;
in an alternative implementation manner of the embodiment of the present invention, as shown in fig. 6, the fastening mechanism 6 includes a magnet fixing plate 601, a magnet 602, a bevel groove 603, a magnet fixing plate spring 604, a hook 605, a hook 606, a hook spring 607, an armature 608, a connecting rod 609, and a fastening plate 610, wherein the armature 608 and the connecting rod 609 are installed on the hook 606, and the fastening plate 610 and the armature 608 are installed on the connecting rod 609; an inclined groove 603 is arranged on the magnet fixing plate 601; specifically, the magnet fixing plate 601 is slidably mounted in the chute 19, and the hook 606 is slidably mounted on the fastening mechanism mounting plate 20; a hook spring 607 is arranged on the side surface of the hook 606; the hook spring 607 generates elastic force to make the hook 606 move toward the hook 605; the distance between the magnet 602 and the vacuum connection mechanism 9 is controlled by controlling the movement of the hook 606, so as to control the on-off of the vacuum connection mechanism 9.
In an alternative embodiment of the present invention, as shown in fig. 1 and 2, the connector includes an external wire fastening screw 7, an internal wire fastening screw 8, and a terminal 10, wherein the external wire fastening screw 7 and the internal wire fastening screw 8 are mounted on the terminal 10, and a connecting wire 12 is fixed inside the terminal 10 by the internal wire fastening screw 8; the external wires are inserted into the terminal 10 through the wire insertion hole 4 and the wire insertion hole 5; tightening the outer wire by an outer wire tightening screw 7; specifically, in use, the internal wiring is first connected to the inner hole of the terminal 10, and the internal wiring is fixed to the terminal 10 by screwing the screw 8 with the internal wire; then, the external incoming and outgoing lines are passed through the wire incoming hole 4 and the wire outgoing hole 5.
In an optional implementation manner of the embodiment of the present invention, as shown in fig. 4 and 5, the overvoltage release further includes an undervoltage release 13 and an overvoltage release 16; the undervoltage release 13 and the overvoltage release 16 are connected into a circuit, and whether the circuit voltage is stable or not is detected through the undervoltage release 13 and the overvoltage release 16; the pushing block 15 is slidably mounted in the pushing block groove 14, and a spring is mounted on the pushing block 15 and enables the pushing block 15 to move towards the buckling mechanism 6; when the circuit voltage is too high, the overvoltage release 16 generates magnetic force to suck the armature 608, so that the hook 606 moves to separate the hook 605, and the vacuum switch-on mechanism 9 is powered off; when the circuit voltage is too low, the magnetic force generated by the undervoltage release 13 is low, and the pushing block 15 moves towards the direction of the fastening mechanism 6 under the action of the spring to push the hook 606 to separate the hook 605, so that the vacuum switch-on mechanism 9 is powered off.
The device also comprises a bimetallic strip 17 and an overcurrent release 18; the bimetallic strip 17 and the overcurrent release 18 are connected to an internal circuit to detect the heating and current peak value of the circuit, and when the circuit generates too much heat or the current peak value is too large, the bimetallic strip 17 or the overcurrent release 18 drives the hook 606 and then drives the magnet 602 to cut off the power of the vacuum switch-on mechanism 9.
In an optional implementation manner of the embodiment of the present invention, as shown in fig. 4 and 5, the present invention further includes a bottom plate 11, a cover plate 1, a reset button 2, a side plate 3, a chute 19, and a fastening mechanism mounting plate 20; a reset button 2 is arranged on the cover plate 1, and the reset button 2 is in sliding connection with the inclined groove 603 of the buckle mechanism 6; specifically, after the reset button 2 is pressed, the inclined groove 603 is pressed through the inclined surface of the reset button 2, so that the magnet fixing plate 601 is pushed towards the direction of the hook 606, and the hook 605 and the hook 606 are clamped; when the hook 605 and the hook 606 are clamped, the magnet 602 is far away from the vacuum connection mechanism 9, and then the movable contact block 907 is stretched by the spring 906 to connect the connection groove 908 and the fixed contact 904, so that the two fixed contacts 904 are connected to complete the power supply; a chute 19 and a buckle mechanism mounting plate 20 are arranged on the bottom plate 11;
specifically, the bottom plate 11, the cover plate 1 and the side plate 3 form a breaker shell;
the buckling mechanism 6, the vacuum connection mechanism 9, the undervoltage release 13, the overvoltage release 16, the bimetallic strip 17 and the overcurrent release 18 are connected into a circuit through a connecting wire 12.
The working principle is as follows: when the vacuum circuit breaker needs to be connected into a circuit, the connecting line and the connecting line are respectively connected into the wire connecting hole 4 and the wire connecting hole 5; when the voltage is too low or too high, the under-voltage release 13 and the over-voltage release 16 drive the buckling mechanism 6 to be disconnected from the hook 605 so as to make the magnet 602 move towards the vacuum connection mechanism 9, and the magnet 602 sucks the armature 608 so as to make the static contact 904 and the connection groove 908 disconnected so as to complete the power failure of the vacuum connection mechanism 9; when the current peak or the circuit generates excessive heat, the overcurrent release 18 or the bimetallic strip 17 drives the snap-fit mechanism 6 to be disconnected from the hook 605 so as to move the magnet 602 towards the vacuum connection mechanism 9, and the armature 608 is sucked by the magnet 602 so as to disconnect the static contact 904 and the connection groove 908, so that the vacuum connection mechanism 9 is powered off.
Claims (7)
1. The vacuum circuit breaker is characterized by comprising a wire access hole (4), a wire access hole (5), a vacuum connection mechanism (9) and a buckle mechanism (6), wherein the vacuum connection mechanism (9) is connected between the wire access hole (4) and the wire access hole (5);
the vacuum connection mechanism (9) comprises an arc extinguish chamber (902), a connection column (903), a fixed contact (904), a sliding rod (905), a spring (906), a movable contact block (907), a connection groove (908) and an armature (608); the connecting column (903) is hermetically arranged at two ends of the arc extinguish chamber (902), and a static contact (904) is arranged on the inner side of the connecting column (903); a sliding rod (905) is arranged in the arc extinguish chamber (902), a moving contact block (907) is slidably mounted on the sliding rod (905), and the moving contact block (907) is mounted between the two fixed contacts (904); a contact groove (908) is arranged on the side surface of the movable contact block (907) contacted with the fixed contact (904), and an armature (608) is arranged below the movable contact block (907); the spring (906) is arranged on the movable contact block (907), and the spring (906) generates pulling force to enable the connecting groove (908) to be connected with the fixed contact (904);
the buckling mechanism (6) comprises a magnet fixing plate (601), a magnet (602), a magnet fixing plate spring (604), a hook (605) and a hook (606), wherein the magnet (602) and the hook (605) are arranged on the magnet fixing plate (601), one end of the magnet fixing plate spring (604) is fixedly connected with the magnet fixing plate (601), and the magnet fixing plate spring (604) generates elastic force to enable the magnet fixing plate (601) to be far away from the hook (606); the hook (606) is connected with the hook (605) in a clamping way; when the hook (605) and the hook (606) are disconnected, the magnet fixing plate (601) and the magnet (602) move towards the vacuum connection mechanism (9) under the elastic force of the magnet fixing plate spring (604), and when the magnet (602) and the vacuum connection mechanism (9) approach to a certain distance, the magnetic force of the magnet (602) further absorbs the armature (608) to further pull the contact block (907) to move downwards so that the connection groove (908) is disconnected with the static contact (904) to complete power failure; reducing arc chute (902) openings;
the overvoltage tripping device also comprises an undervoltage tripping device (13), an overvoltage tripping device (16), a bimetallic strip (17) and an overcurrent tripping device (18); the undervoltage release (13) and the overvoltage release (16) are connected into a circuit, and whether the circuit voltage is stable or not is detected through the undervoltage release (13) and the overvoltage release (16); the heating and current of the circuit are detected by connecting the bimetallic strip (17) and the overcurrent release (18) into the internal circuit.
2. A vacuum circuit breaker according to claim 1, characterized in that the extinguishing chamber (902) is a closed tube, the switching leg (903) being sealingly connected to the extinguishing chamber (902).
3. The vacuum circuit breaker according to claim 1, wherein the latch mechanism (6) comprises a magnet fixing plate (601), a magnet (602), a bevel groove (603), a magnet fixing plate spring (604), a hook (605), a hook (606), a hook spring (607), an armature (608), a connecting rod (609) and a catch plate (610), wherein the armature (608) and the connecting rod (609) are mounted on the hook (606), and the catch plate (610) and the armature (608) are arranged on the connecting rod (609); an inclined groove (603) is arranged on the magnet fixing plate (601); the hook spring (607) is arranged on the side surface of the hook (606); the hook spring (607) generates elastic force to make the hook (606) move towards the direction of the hook (605); the distance between the magnet (602) and the vacuum connection mechanism (9) is controlled by controlling the movement of the hook (606) so as to control the on-off of the vacuum connection mechanism (9).
4. A vacuum interrupter according to claim 1, further comprising an external wire tightening screw (7), an internal wire tightening screw (8), and a terminal (10), wherein the external wire tightening screw (7) and the internal wire tightening screw (8) are mounted on the terminal (10), and the connecting wire (12) is fixed inside the terminal (10) by the internal wire tightening screw (8); the external wires are connected into the terminal (10) through the wire access hole (4) and the wire access hole (5); the external wire is tightened by an external wire tightening screw (7).
5. Vacuum interrupter according to claim 1, characterized by comprising a push block groove (14) and a push block (15), wherein the push block (15) is slidably mounted in the push block groove (14), and a spring is mounted on the push block (15), and the spring moves the push block (15) towards the latch mechanism (6); when the circuit voltage is overhigh, the overvoltage release (16) generates magnetic force to suck the armature (608) so as to enable the hook (606) to move to enable the hook (605) to be separated, and further the vacuum switch-on mechanism (9) is powered off; when the circuit voltage is too low, the magnetic force generated by the undervoltage release (13) is low, and the pushing block (15) moves towards the direction of the buckle mechanism (6) under the action of the spring to further push the hook (606) to separate the hook (605), so that the vacuum switch-on mechanism (9) is powered off.
6. Vacuum circuit breaker according to claim 1, characterized in that it further comprises a base plate (11), a cover plate (1), a reset button (2), a side plate (3); a reset button (2) is arranged on the cover plate (1), and the reset button (2) is in sliding connection with an inclined groove (603) of the buckle mechanism (6); the circuit breaker shell is composed of the bottom plate (11), the cover plate (1) and the side plate (3).
7. Vacuum circuit breaker according to any of claims 1-6, characterized in that the snap-on mechanism (6), the vacuum switch-on mechanism (9), the undervoltage release (13), the overvoltage release (16), the bimetal (17) and the overcurrent release (18) are connected into the circuit by means of a connecting line (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345877.XA CN111477519B (en) | 2020-04-27 | 2020-04-27 | Vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010345877.XA CN111477519B (en) | 2020-04-27 | 2020-04-27 | Vacuum circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111477519A CN111477519A (en) | 2020-07-31 |
| CN111477519B true CN111477519B (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010345877.XA Active CN111477519B (en) | 2020-04-27 | 2020-04-27 | Vacuum circuit breaker |
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| Country | Link |
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| CN (1) | CN111477519B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614764A (en) * | 2021-02-07 | 2021-04-06 | 甄翠翠 | Adjustable circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264490A (en) * | 1969-05-13 | 1972-02-23 | ||
| CN104715964A (en) * | 2015-03-30 | 2015-06-17 | 浙江华仪电器科技有限公司 | Monopole vacuum circuit breaker |
| CN105719895A (en) * | 2014-12-02 | 2016-06-29 | 沈阳工业大学 | Vacuum arc-extinguishing chamber of novel double-acting mechanism |
| CN110211839A (en) * | 2019-07-09 | 2019-09-06 | 景德镇永鑫真空电器有限公司 | A kind of three-phase box type vacuum breaker |
| CN110828227A (en) * | 2019-10-12 | 2020-02-21 | 保定市冀中电力设备有限责任公司 | Full-working-condition intelligent solid-sealed high-voltage alternating-current vacuum circuit breaker |
-
2020
- 2020-04-27 CN CN202010345877.XA patent/CN111477519B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1264490A (en) * | 1969-05-13 | 1972-02-23 | ||
| CN105719895A (en) * | 2014-12-02 | 2016-06-29 | 沈阳工业大学 | Vacuum arc-extinguishing chamber of novel double-acting mechanism |
| CN104715964A (en) * | 2015-03-30 | 2015-06-17 | 浙江华仪电器科技有限公司 | Monopole vacuum circuit breaker |
| CN110211839A (en) * | 2019-07-09 | 2019-09-06 | 景德镇永鑫真空电器有限公司 | A kind of three-phase box type vacuum breaker |
| CN110828227A (en) * | 2019-10-12 | 2020-02-21 | 保定市冀中电力设备有限责任公司 | Full-working-condition intelligent solid-sealed high-voltage alternating-current vacuum circuit breaker |
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| CN111477519A (en) | 2020-07-31 |
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