CN112053914A - Permanent magnet circuit breaker - Google Patents
Permanent magnet circuit breaker Download PDFInfo
- Publication number
- CN112053914A CN112053914A CN202011030134.XA CN202011030134A CN112053914A CN 112053914 A CN112053914 A CN 112053914A CN 202011030134 A CN202011030134 A CN 202011030134A CN 112053914 A CN112053914 A CN 112053914A
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- CN
- China
- Prior art keywords
- contact
- extinguish chamber
- arc extinguish
- permanent magnet
- circuit breaker
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- 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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- 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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/32—Electromagnetic mechanisms having permanently magnetised part
-
- 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
- H01H71/68—Power reset mechanisms actuated by electromagnet
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a permanent magnet circuit breaker, comprising: a mounting frame; the arc extinguish chamber is arranged on the mounting frame and comprises an arc extinguish chamber moving contact and an arc extinguish chamber static contact, the arc extinguish chamber moving contact is positioned above the arc extinguish chamber static contact, and the arc extinguish chamber static contact is positioned below the arc extinguish chamber moving contact; the isolating switch mechanism is arranged on the mounting frame and is connected with the arc extinguish chamber fixed contact; the flexible connecting piece is connected with the movable contact of the arc extinguish chamber; and the transmission assembly is arranged on the mounting frame and is connected with the arc extinguish chamber moving contact. The circuit is connected with the breaker through the soft connecting piece to electrify the breaker, the moving contact of the arc extinguish chamber is contacted with the fixed contact of the arc extinguish chamber, and the arc extinguish chamber is in a closing state. When the manual separating brake, utilize the transmission assembly who has link mechanism, can effectively solve the jam problem of circuit breaker between permanent magnetic mechanism and transmission pivot.
Description
Technical Field
The invention relates to the field of switch equipment, in particular to a permanent magnet circuit breaker.
Background
With the increasing of the power of popularizing permanent magnet switch products in national power grids in recent years, the number of permanent magnet switch manufacturers produced in the market is gradually increased, the structures of the products are also various, but the structures of the products still have some common problems. The problems are as follows:
1. the manual opening of the three-phase permanent magnet switch requires a large operation power.
2. The transmission structure of the output shaft is a mode that linear motion is converted into angle transmission through a U-shaped groove, and the transmission mode is easy to jam and affects the switching-on and switching-off performance of the switch.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a permanent magnet circuit breaker which has better opening and closing performance and can reduce the volume of the whole mechanism, thereby reducing the production cost.
According to an embodiment of the present invention, a permanent magnet circuit breaker includes: a mounting frame; the arc extinguish chamber is arranged on the mounting frame and comprises an arc extinguish chamber moving contact and an arc extinguish chamber static contact, the arc extinguish chamber moving contact is positioned above the arc extinguish chamber static contact, and the arc extinguish chamber static contact is positioned below the arc extinguish chamber moving contact; the isolating switch mechanism is arranged on the mounting frame and is connected with the arc extinguish chamber fixed contact; the flexible connecting piece is connected with the movable contact of the arc extinguish chamber; and the transmission assembly is arranged on the mounting frame and is connected with the arc extinguish chamber moving contact.
The permanent magnet circuit breaker at least has the following beneficial effects: the circuit is connected with the breaker through the soft connecting piece to electrify the breaker, the moving contact of the arc extinguish chamber is contacted with the fixed contact of the arc extinguish chamber, and the arc extinguish chamber is in a closing state. When the manual separating brake, utilize the transmission assembly who has link mechanism, can effectively solve the jam problem of circuit breaker between permanent magnetic mechanism and transmission pivot.
According to the permanent magnet circuit breaker of the first aspect of the invention, the transmission assembly comprises an insulating pull rod connected to the upper end of the movable contact of the arc extinguish chamber; the permanent magnet mechanism is arranged on the mounting frame and is connected with the upper end of the insulating pull rod; and the connecting rod opening mechanism is arranged on the mounting frame and connected with the permanent magnet mechanism, and the connecting rod opening mechanism indirectly pulls the insulating pull rod through the permanent magnet mechanism.
According to some embodiments of the invention, the permanent magnet mechanism comprises a fixed core disposed on the mounting bracket; the movable iron core is arranged at the upper end of the fixed iron core, and the upper end of the movable iron core is connected with the connecting rod opening mechanism; the coil framework is arranged between the movable iron core and the fixed iron core; the coil is wound on the coil framework; and the driving rod is movably arranged on the coil framework in a penetrating manner, the upper end of the driving rod is connected with the fixed iron core, and the lower end of the driving rod is connected with the insulating pull rod.
According to some embodiments of the invention, a yoke element is provided on the drive rod, the yoke element being located above the insulating tie rod. The yoke piece is arranged below the fixed iron core, so that the fixed iron core magnetizes the yoke piece. The magnetized magnetic yoke piece and the permanent magnetic mechanism form a lower magnetic yoke, so that impact caused by collision and rebound when the permanent magnetic mechanism is opened can be reduced.
According to some embodiments of the invention, the connecting rod opening mechanism comprises a rotating shaft fixing block arranged on the mounting frame; the first transmission rotating shaft is rotatably arranged on the rotating shaft fixing block; the first rotating shaft crank arm is fixed on the first transmission rotating shaft and rotates along with the first transmission rotating shaft; the brake separating rod is arranged at the top of the movable iron core; and one end of the connecting plate is hinged with the first rotating shaft crank arm, and the other end of the connecting plate is hinged at the bottom of the brake separating rod. When manual brake opening is carried out, the operating torque is amplified through the connecting rod structure of the transmission rotating shaft, the connecting plate and the crank arm, so that the operating power required by brake opening is reduced, the height of the whole device is reduced, and the sheet metal cost is saved.
According to some embodiments of the invention, a hinge point of the connecting plate and the brake separating rod is located on a side of a center line of a length direction of the brake separating rod. The connecting plate has certain eccentric amount to the fulcrum of minute brake lever and minute brake lever center, can form moment and make whole structure more laborsaving.
According to some embodiments of the present invention, the disconnecting switch mechanism includes a stationary contact connected to the stationary contact of the arc extinguish chamber; the contact fixing seat is installed on the mounting frame; the contact is arranged on the contact fixing seat; and the disconnecting link is rotatably arranged on the contact and can rotate to be in contact with the fixed contact. When the knife switch rotates to be in contact with the static contact, the disconnecting switch is in a closing state.
According to some embodiments of the invention, the disconnector mechanism further comprises a ground hook contact mounted on the mounting frame, the disconnector being rotatable into contact with the ground hook contact. When the knife switch rotates to be contacted with the grounding hook contact, the switch is in a switch-on state of the grounding switch.
According to some embodiments of the invention, the disconnecting switch mechanism further comprises a second transmission rotating shaft, which is rotatably arranged on the mounting rack; the second rotating shaft crank arm is fixedly connected to the second transmission rotating shaft; the connecting piece is arranged on the disconnecting link; and one end of the isolation crank arm is hinged with the second rotating shaft crank arm, and the other end of the isolation crank arm is hinged with the connecting piece.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a front view of an embodiment of the invention (with one insulating side panel of the mounting bracket omitted);
FIG. 3 is a cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a connecting rod opening mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a disconnector mechanism according to an embodiment of the present invention;
fig. 6 is a side view of a disconnector mechanism according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, the present invention discloses a permanent magnet circuit breaker including a mounting bracket 10, an arc extinguishing chamber 20, a soft connector 40, a disconnecting switch mechanism 30, and a transmission assembly 50. The arc extinguish chamber 20 is arranged on the mounting frame 10, the arc extinguish chamber 20 comprises an arc extinguish chamber moving contact 21 and an arc extinguish chamber static contact 22, the arc extinguish chamber moving contact 21 is located above, and the arc extinguish chamber static contact 22 is located below. The disconnecting switch mechanism 30 is disposed on the mounting bracket 10 and connected to the arc-extinguishing chamber stationary contact 22. The flexible connecting element 40 is connected with the movable contact 21 of the arc extinguishing chamber. The transmission assembly 50 is disposed on the mounting frame 10 and connected with the arc extinguishing chamber moving contact 21. The circuit is connected with the breaker through the soft connecting piece 40 to electrify the breaker, the arc extinguish chamber moving contact 21 is contacted with the arc extinguish chamber fixed contact 22, and the arc extinguish chamber 20 is in a closing state. When the brake is manually opened, the problem of jamming of the circuit breaker between the permanent magnet mechanism 52 and the transmission rotating shaft can be effectively solved by using the transmission assembly 50 with the link mechanism.
Referring to fig. 2, the transmission assembly 50 includes an insulating rod 51, a permanent magnet mechanism 52, and a link opening mechanism 53. The insulating pull rod 51 is connected to the upper end of the arc extinguishing chamber moving contact 21, and the upper end of the insulating pull rod 51 is connected with the permanent magnet mechanism 52. The connecting rod opening mechanism 53 is connected with the permanent magnet mechanism 52, and when manual opening is needed, the connecting rod opening mechanism 53 indirectly pulls the insulating pull rod 51 through the permanent magnet mechanism 52 to open the opening.
Further, referring to fig. 2 and 3, the permanent magnet mechanism 52 includes a fixed iron core 521, a movable iron core 522, a bobbin 523, a coil 524, and a driving rod 525. The fixed iron core 521 is arranged on the mounting frame 10, the movable iron core 522 is arranged at the upper end of the fixed iron core 521, and the upper end of the movable iron core 522 is connected with the connecting rod opening mechanism 53. The bobbin 523 is disposed between the movable core 522 and the fixed core 521, and the coil 524 is disposed around the bobbin 523. The driving rod 525 is movably arranged on the coil framework 523 in a penetrating way, the upper end of the driving rod 525 is connected with the fixed iron core 521, and the lower end of the driving rod 525 is connected with the insulating pull rod 51.
Still further, the driving rod 525 is provided with a yoke member 526, and the yoke member 526 is located above the insulating link 51. The yoke 526 is provided below the stator core 521 in order to magnetize the yoke 526 to the stator core 521. The magnetized magnetic yoke piece 526 and the permanent magnet mechanism 52 form a lower magnetic yoke, so that the impact generated by collision and rebound when the permanent magnet mechanism 52 is opened can be reduced.
Referring to fig. 2, 4 and 5, the link opening mechanism 53 includes a rotation shaft fixing block 532, a first transmission rotation shaft 533, a first rotation shaft crank arm 534, an opening lever 531, and a connecting plate 535. The shaft fixing block 532 is disposed on the mounting bracket 10, the first transmission shaft 533 is rotatably disposed on the shaft fixing block 532, and the first transmission shaft crank arm 534 is fixed on the first transmission shaft 533 and rotates along with the first transmission shaft 533. The brake separating rod 531 is arranged at the top of the movable iron core 522, one end of the brake separating rod is hinged with the first rotating shaft crank arm 534, and the other end of the brake separating rod 531 is hinged at the bottom of the brake separating rod 531. When manual brake opening is carried out, the operating torque is amplified through the transmission rotating shaft, the connecting plate 535 and the connecting rod structure of the crank arm, so that the operating power required by brake opening is reduced, the height of the whole device is reduced, and the sheet metal cost is saved.
Still further, the hinge point of the connecting plate 535 and the opening lever 531 is located on the side of the center line of the opening lever 531 in the longitudinal direction. The connecting plate 535 has a certain eccentric amount between the fulcrum of the brake separating rod 531 and the center of the brake separating rod 531, and can form a moment to ensure that the whole structure is more labor-saving.
Referring to fig. 2, 5 and 6, the disconnecting switch mechanism 30 includes a fixed contact 31, a contact fixing base 32, a contact 33 and a knife switch 34. The fixed contact 31 is connected with the fixed contact of the arc extinguish chamber. The contact fixing seat 32 is installed on the mounting frame 10, the contact 33 is installed on the contact fixing seat 32, the knife switch 34 is rotatably arranged on the contact 33, and the knife switch 34 can be rotated to be in contact with the static contact 31. When the knife switch 34 rotates to contact with the static contact 31, the disconnecting switch is in a closing state.
Still further, the disconnector mechanism 30 further comprises a ground hook contact 35 mounted on the mounting frame 10, the knife switch 34 being rotatable into contact with the ground hook contact 35. When the knife switch 34 rotates to contact with the grounding hook contact 35, the grounding switch is in a closing state.
Still further, the disconnecting switch mechanism 30 further includes a second transmission rotating shaft 36, a second rotating shaft crank arm 37, a connecting piece 38 and a disconnecting crank arm 39. The second transmission shaft 36 is rotatably disposed on the mounting frame 10 and is fixedly connected to the second shaft crank arm 37. The connector 38 is mounted on the knife gate 34. One end of the isolating crank arm 39 is hinged with the second rotating shaft crank arm 37, and the other end is hinged with the connecting piece 38.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. A permanent magnet circuit breaker, comprising:
a mounting frame (10);
the arc extinguish chamber (20) is arranged on the mounting frame (10), the arc extinguish chamber (20) comprises an arc extinguish chamber moving contact (21) and an arc extinguish chamber static contact (22), the arc extinguish chamber moving contact (21) is positioned above, and the arc extinguish chamber static contact (22) is positioned below;
the isolating switch mechanism (30) is arranged on the mounting frame (10) and is connected with the arc extinguish chamber static contact (22);
the soft connecting piece (40) is connected with the movable contact (21) of the arc extinguish chamber; and
and the transmission assembly (50) is arranged on the mounting frame (10) and is connected with the arc extinguishing chamber moving contact (21).
2. A permanent magnet circuit breaker according to claim 1, characterized in that: the transmission assembly (50) comprises
The insulating pull rod (51) is connected to the upper end of the arc extinguish chamber moving contact (21);
the permanent magnet mechanism (52) is arranged on the mounting rack (10) and is connected with the upper end of the insulating pull rod (51); and
connecting rod separating brake mechanism (53), set up on mounting bracket (10), connecting rod separating brake mechanism (53) with permanent magnetism mechanism (52) are connected, connecting rod separating brake mechanism (53) are through permanent magnetism mechanism (52) indirect pulling insulating pull rod (51).
3. A permanent magnet circuit breaker according to claim 2, characterized in that: the permanent magnet mechanism (52) comprises
A stationary core (521) disposed on the mounting bracket (10);
the movable iron core (522) is arranged at the upper end of the fixed iron core (521), and the upper end of the movable iron core (522) is connected with the connecting rod opening mechanism (53);
a bobbin (523) disposed between the movable core (522) and the fixed core (521);
the coil (524) is wound on the coil framework (523); and
the driving rod (525) is movably arranged in the coil framework (523) in a penetrating mode, the upper end of the driving rod (525) is connected with the fixed iron core (521), and the lower end of the driving rod (525) is connected with the insulating pull rod (51).
4. A permanent magnet circuit breaker according to claim 3, characterized in that: a magnetic yoke piece (526) is arranged on the driving rod (525), and the magnetic yoke piece (526) is positioned above the insulating pull rod (51).
5. A permanent magnet circuit breaker according to claim 3, characterized in that: the connecting rod opening mechanism (53) comprises
The rotating shaft fixing block (532) is arranged on the mounting rack (10);
the first transmission rotating shaft (533) is rotatably arranged on the rotating shaft fixing block (532);
the first rotating shaft crank arm (534) is fixed on the first rotating transmission shaft (533) and rotates along with the first rotating transmission shaft (533);
the brake separating rod (531) is arranged at the top of the movable iron core (522); and
and one end of the connecting plate (535) is hinged with the first rotating shaft crank arm (534), and the other end of the connecting plate is hinged at the bottom of the brake separating rod (531).
6. The permanent magnet circuit breaker according to claim 5, characterized in that: the hinged point of the connecting plate (535) and the brake separating rod (531) is positioned on the side of the central line of the brake separating rod (531) in the length direction.
7. A permanent magnet circuit breaker according to claim 1, characterized in that: the disconnecting switch mechanism (30) comprises
The fixed contact (31) is connected with the fixed contact (22) of the arc extinguish chamber;
the contact fixing seat (32) is installed on the mounting frame (10);
the contact (33) is installed on the contact fixing seat (32); and
the disconnecting link (34) is rotatably arranged on the contact (33), and the disconnecting link (34) can be rotated to be in contact with the static contact (31).
8. The permanent magnet circuit breaker according to claim 7, characterized in that: isolator mechanism (30) still including installing ground connection hook contact (35) on mounting bracket (10), switch (34) rotatable to with ground connection hook contact (35) contact.
9. The permanent magnet circuit breaker according to claim 7, characterized in that: the isolating switch mechanism (30) further comprises
The second transmission rotating shaft (36) is rotatably arranged on the mounting rack (10);
the second rotating shaft crank arm (37) is fixedly connected to the second transmission rotating shaft (36);
a connector (38) mounted on the knife switch (34); and
and one end of the isolation crank arm (39) is hinged with the second rotating shaft crank arm (37), and the other end of the isolation crank arm is hinged with the connecting piece (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030134.XA CN112053914A (en) | 2020-09-27 | 2020-09-27 | Permanent magnet circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030134.XA CN112053914A (en) | 2020-09-27 | 2020-09-27 | Permanent magnet circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112053914A true CN112053914A (en) | 2020-12-08 |
Family
ID=73605832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011030134.XA Pending CN112053914A (en) | 2020-09-27 | 2020-09-27 | Permanent magnet circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112053914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113643925A (en) * | 2021-07-05 | 2021-11-12 | 许继集团有限公司 | Five-connection disconnecting link assembly |
-
2020
- 2020-09-27 CN CN202011030134.XA patent/CN112053914A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113643925A (en) * | 2021-07-05 | 2021-11-12 | 许继集团有限公司 | Five-connection disconnecting link assembly |
| CN113643925B (en) * | 2021-07-05 | 2024-03-01 | 许继集团有限公司 | Five-connection disconnecting link assembly |
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