CN114823237A - Shunt release for circuit breaker - Google Patents
Shunt release for circuit breaker Download PDFInfo
- Publication number
- CN114823237A CN114823237A CN202210574808.5A CN202210574808A CN114823237A CN 114823237 A CN114823237 A CN 114823237A CN 202210574808 A CN202210574808 A CN 202210574808A CN 114823237 A CN114823237 A CN 114823237A
- Authority
- CN
- China
- Prior art keywords
- contact mechanism
- moving contact
- shunt
- shunt release
- rotary switch
- 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.)
- Pending
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Classifications
-
- 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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic 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
- H01H71/66—Power reset mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A shunt release for a circuit breaker comprises a shell, a magnetic latching relay, a moving contact mechanism, a static contact mechanism, a toggle switch and an operating mechanism, wherein the magnetic latching relay, the moving contact mechanism, the static contact mechanism, the operating mechanism and the toggle switch are all arranged on the shell; when the shunt coil is not electrified, the rotary switch member returns under the action of the spring; the rotating switch part is abutted against the moving contact mechanism, and when the rotating switch part rotates, the moving contact mechanism is pushed to be disconnected from or restored to be contacted with the static contact mechanism.
Description
Technical Field
The invention relates to a shunt release for a circuit breaker.
Background
The circuit breaker is a switching device capable of closing, carrying, and opening/closing a current under a normal circuit condition and a current under an abnormal circuit condition within a prescribed time. The circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to the application range, the high-low voltage boundary line is divided more vaguely, and the circuit breakers above 3kV are generally called high-voltage electric appliances. The circuit breaker can be used for distributing electric energy, starting an asynchronous motor infrequently, protecting a power supply circuit, the motor and the like, and automatically cutting off a circuit when faults such as serious overload, short circuit, undervoltage and the like occur, and the function of the circuit breaker is equivalent to the combination of a fuse type switch, an over-under-heat relay and the like. Furthermore, no parts need to be changed after breaking the fault current. Has been widely used.
A circuit breaker generally includes a contact system, an arc extinguishing system, an operating mechanism, a trip unit, a case, and the like. When short circuit occurs, a magnetic field generated by large current (generally 10 to 12 times) overcomes a counterforce spring, a release pulls an operating mechanism to act, and a switch is tripped instantaneously. When the overload occurs, the current becomes large, the heating value becomes large, and the bimetallic strip deforms to a certain degree to push the mechanism to act (the larger the current is, the shorter the acting time is).
The shunt release is an accessory for remotely controlling the opening brake. When the power supply voltage is equal to any voltage between 70% and 110% of the rated control power supply voltage, the circuit breaker can be reliably disconnected. The shunt release is essentially a tripping coil plus release, and a specified voltage is applied to the shunt release coil, so that the circuit breaker is tripped and is switched off. The rated control power voltage of the shunt release is generally 230V/400V alternating current or 220V direct current, and when the power voltage value is equal to any voltage between 70% and 110% of the control power voltage, the shunt release can enable the circuit breaker to be tripped and disconnected under all operating strips of the circuit breaker.
The existing shunt release has a complex structure, so that the release performance is unstable, and the actual requirement of a small-size circuit breaker cannot be met.
Disclosure of Invention
The invention aims to provide a shunt release for a circuit breaker, which has a simple structure, stable release performance and low failure rate.
The above object of the present invention is achieved by the following scheme:
a shunt release for a circuit breaker comprises a shell, a magnetic latching relay, a moving contact mechanism, a static contact mechanism, a toggle switch and an operating mechanism, wherein the magnetic latching relay, the moving contact mechanism, the static contact mechanism, the operating mechanism and the toggle switch are all arranged on the shell,
the magnetic latching relay is characterized by comprising an iron core, a shunt coil, a rotary switch piece and a spring, wherein armatures are arranged at two ends of the rotary switch piece, and when the shunt coil is electrified, the rotary switch piece rotates to enable the armatures to be in contact with the iron core; when the shunt coil is not electrified, the rotary switch member returns under the action of the spring;
the rotating switch part is abutted against the moving contact mechanism, and when the rotating switch part rotates, the moving contact mechanism is pushed to be disconnected from or restored to be contacted with the static contact mechanism.
Furthermore, the reversing mechanism further comprises a reversing rod, one end of the reversing rod is abutted to the rotary switch piece, and the other end of the reversing rod can be abutted to the toggle switch.
The static contact mechanism is connected with the moving contact mechanism, and the moving contact mechanism is connected with the static contact mechanism.
Furthermore, the moving contact mechanism comprises a moving contact and a rack, and the moving contact is welded on the rack.
Furthermore, the moving contact is riveted on the rack.
Furthermore, the toggle switch can realize the contact and disconnection of the static contact mechanism and the moving contact mechanism.
When the shunt excitation coil is electrically excited, the coil drives the rotating switch piece to rotate, and then the moving contact mechanism and the static contact mechanism are pushed to be separated.
When the relay is buckled and switched on again, the toggle switch pushes the return rod, so that the switch part is rotated, and the contact between the static contact mechanism and the moving contact mechanism is realized.
The technical effects of the invention can be realized by the scheme as follows:
the invention adopts the principle of a magnetic latching relay, controls the rotation of the rotary switch part and simultaneously realizes the closing and separation of the moving contact and the static contact, and has simple structure, stable work and low failure rate.
The invention is provided with a return rod, the toggle switch drives the movable contact and the fixed contact to be switched on and simultaneously pushes the return rod to extrude the rotary switch piece, and the rotary switch piece is extruded and reset by the restoring force of the spring.
Drawings
Fig. 1 is a schematic structural diagram of the shunt release of the present invention.
Fig. 2 is a structural diagram of the shunt release of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1 and 2, a shunt release for a circuit breaker comprises a housing 3, a magnetic latching relay, a moving contact mechanism, a static contact mechanism, a toggle switch and an operating mechanism, wherein the magnetic latching relay, the moving contact mechanism, the static contact mechanism, the operating mechanism and the toggle switch are all mounted on the housing,
the magnetic latching relay comprises an iron core, a shunt excitation coil 1, a rotary switch part 2 and a spring, wherein armatures are arranged at two ends of the rotary switch part, and when the shunt excitation coil is electrified, the rotary switch part rotates to enable the armatures to be in contact with the iron core; when the shunt coil is not electrified, the rotary switch member returns under the action of the spring;
the rotary switch part is abutted against the moving contact mechanism, and when the rotary switch part rotates, the moving contact mechanism is pushed to be disconnected or restored to be contacted with the static contact mechanism.
Referring to fig. 1, the slide switch further comprises a return rod, one end of the return rod is abutted with the rotary switch piece, and the other end of the return rod can be abutted with the toggle switch; the toggle switch can realize the contact and disconnection of the static contact mechanism and the moving contact mechanism.
The shunt release for the circuit breaker in the figure further comprises an incoming line terminal and an outgoing line terminal, wherein the incoming line terminal is connected with the static contact mechanism, and the outgoing line terminal is connected with the moving contact mechanism; the moving contact mechanism comprises a moving contact and a rack, and the moving contact is welded on the rack.
Example 2
Referring to fig. 1 and 2, a shunt release for a circuit breaker comprises a housing 3, a magnetic latching relay, a moving contact mechanism, a static contact mechanism, a toggle switch and an operating mechanism, wherein the magnetic latching relay, the moving contact mechanism, the static contact mechanism, the operating mechanism and the toggle switch are all mounted on the housing,
the magnetic latching relay comprises an iron core, a shunt excitation coil 1, a rotary switch part 2 and a spring, wherein armatures are arranged at two ends of the rotary switch part, and when the shunt excitation coil is electrified, the rotary switch part rotates to enable the armatures to be in contact with the iron core; when the shunt coil is not electrified, the rotary switch member returns under the action of the spring;
the rotating switch part is abutted against the moving contact mechanism, and when the rotating switch part rotates, the moving contact mechanism is pushed to be disconnected from or restored to be contacted with the static contact mechanism.
Referring to fig. 1, the slide switch further comprises a return rod, one end of the return rod is abutted with the rotary switch piece, and the other end of the return rod can be abutted with the toggle switch; the toggle switch can realize the contact and disconnection of the static contact mechanism and the moving contact mechanism.
The shunt release for the circuit breaker in the figure further comprises an incoming line terminal and an outgoing line terminal, wherein the incoming line terminal is connected with the static contact mechanism, and the outgoing line terminal is connected with the moving contact mechanism; the moving contact mechanism comprises a moving contact and a rack, and the moving contact is riveted on the rack.
When the shunt excitation coil is electrically excited, the coil drives the rotating switch piece to rotate, and then the moving contact mechanism and the static contact mechanism are pushed to be separated.
When the relay is buckled and switched on again, the toggle switch pushes the return rod, so that the switch part is rotated, and the contact between the static contact mechanism and the moving contact mechanism is realized.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent replacement or change of the technical solution and the inventive concept thereof within the technical scope of the present invention.
Claims (6)
1. A shunt release for a circuit breaker comprises a shell, a magnetic latching relay, a moving contact mechanism, a static contact mechanism, a toggle switch and an operating mechanism, wherein the magnetic latching relay, the moving contact mechanism, the static contact mechanism, the operating mechanism and the toggle switch are all arranged on the shell,
the magnetic latching relay is characterized by comprising an iron core, a shunt coil, a rotary switch piece and a spring, wherein armatures are arranged at two ends of the rotary switch piece, and when the shunt coil is electrified, the rotary switch piece rotates to enable the armatures to be in contact with the iron core; when the shunt coil is not electrified, the rotary switch member returns under the action of the spring;
the rotating switch part is abutted against the moving contact mechanism, and when the rotating switch part rotates, the moving contact mechanism is pushed to be disconnected from or restored to be contacted with the static contact mechanism.
2. The shunt release of claim 1, further comprising a return lever, one end of the return lever abutting the rotary switch member, the other end of the return lever being capable of abutting the toggle switch.
3. The shunt release of claim 1, further comprising an incoming terminal and an outgoing terminal, wherein the incoming terminal is connected to the stationary contact mechanism and the outgoing terminal is connected to the movable contact mechanism.
4. The shunt release of claim 1, wherein the movable contact mechanism comprises a movable contact and a frame, and the movable contact is welded to the frame.
5. The shunt release of claim 4, wherein the movable contact is riveted to the frame.
6. The shunt release of claim 1, wherein the toggle switch is capable of contacting and disconnecting the stationary contact mechanism and the movable contact mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574808.5A CN114823237A (en) | 2022-05-25 | 2022-05-25 | Shunt release for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210574808.5A CN114823237A (en) | 2022-05-25 | 2022-05-25 | Shunt release for circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114823237A true CN114823237A (en) | 2022-07-29 |
Family
ID=82516983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210574808.5A Pending CN114823237A (en) | 2022-05-25 | 2022-05-25 | Shunt release for circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114823237A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115148546A (en) * | 2022-08-07 | 2022-10-04 | 浙江西屋电气股份有限公司 | Remote control opening and closing single-pole miniature circuit breaker |
-
2022
- 2022-05-25 CN CN202210574808.5A patent/CN114823237A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115148546A (en) * | 2022-08-07 | 2022-10-04 | 浙江西屋电气股份有限公司 | Remote control opening and closing single-pole miniature circuit breaker |
| CN115148546B (en) * | 2022-08-07 | 2023-09-26 | 浙江西屋电气股份有限公司 | Single-pole miniature circuit breaker capable of remotely controlling opening and closing |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xia Chuyang Inventor after: Huang Mingfang Inventor after: Lin Zhiqing Inventor after: Xiong Zewei Inventor after: Ye Xin Inventor after: Fu Wenqi Inventor after: Yue Lei Inventor before: Xia Chuyang Inventor before: Huang Mingfang Inventor before: Lin Zhiqing Inventor before: Xiong Zhewei Inventor before: Ye Xin Inventor before: Fu Wenqi Inventor before: Yue Lei |
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| CB03 | Change of inventor or designer information |