CN216849769U

CN216849769U - Vacuum circuit breaker

Info

Publication number: CN216849769U
Application number: CN202123456665.8U
Authority: CN
Inventors: 张勇; 唐瑞萍; 文发萍
Original assignee: Dongshengyuan Guangdong Intelligent Electric Co ltd
Current assignee: Dongshengyuan Guangdong Intelligent Electric Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-28
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a vacuum circuit breaker, include: the device comprises a shell, a permanent magnet mechanism is arranged at one end of the shell, a vacuum arc-extinguishing chamber assembly is arranged at the other end of the shell, and a static contact is arranged on the vacuum arc-extinguishing chamber assembly; one end of the transmission component is connected with the permanent magnet mechanism, the other end of the transmission component is provided with a moving contact which can be contacted with the fixed contact, the permanent magnet mechanism is used for driving the transmission component to move along the vertical direction, and the transmission component is provided with an annular groove; and the synchronous brake separating mechanism comprises a synchronous shaft and a synchronous contact arm assembly, one end of the synchronous contact arm assembly is connected with the synchronous shaft, the other end of the synchronous contact arm assembly is connected with the annular groove, when the synchronous shaft is rotated, the synchronous contact arm assembly drives the transmission assembly to move along the vertical direction through the annular groove, the accuracy of the breaker on/off and the time of the breaker on/off are improved, the manual brake separating can be realized, and the service life is long.

Description

Vacuum circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, in particular to vacuum circuit breaker.

Background

In the related technology, the traditional vacuum circuit breaker switch operation adopts a spring mechanism or a permanent magnet mechanism, the three-phase vacuum arc-extinguishing chamber opening and closing operation is realized through three-level transmission of a mechanism connecting rod, a main shaft and an insulating connecting rod, the number of transmission links is large, and the number of parts is large, so that the factors influencing the opening and closing characteristic of the circuit breaker are large, and the opening and closing fault of the circuit breaker caused by mechanical transmission is the main fault of the switch.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a vacuum circuit breaker realizes improving the accuracy that the circuit breaker divides, combined floodgate and reducing the time of dividing, combined floodgate to can realize manual separating brake, long service life.

According to the utility model discloses vacuum circuit breaker, include: the vacuum arc extinguishing chamber comprises a shell, wherein a permanent magnet mechanism is arranged at one end of the shell, a vacuum arc extinguishing chamber component is arranged at the other end of the shell, and a static contact is arranged on the vacuum arc extinguishing chamber component; one end of the transmission component is connected with the permanent magnet mechanism, a moving contact capable of being in contact with the fixed contact is arranged at the other end of the transmission component, the permanent magnet mechanism is used for driving the transmission component to move along the vertical direction, and an annular groove is formed in the transmission component; and the synchronous brake separating mechanism comprises a synchronous shaft and a synchronous contact arm assembly, one end of the synchronous contact arm assembly is connected with the synchronous shaft, the other end of the synchronous contact arm assembly is connected with the annular groove, and when the synchronous shaft rotates, the synchronous contact arm assembly drives the transmission assembly to move along the vertical direction through the annular groove.

According to the utility model discloses vacuum circuit breaker has following beneficial effect at least: the permanent magnetic mechanism adopts a direct drive mode to drive the transmission assembly, so that a plurality of transmission links are reduced, the circuit breaker has excellent opening and closing characteristics, the opening time is reduced, and the requirement of quickly cutting off a power grid is met; the synchronous opening mechanism is utilized to realize the manual opening function, when the circuit breaker is in a closing state, the control circuit can manually perform emergency opening when power is off, the permanent magnetic mechanism controls opening and closing through an external controller, the opening and closing control accuracy and the service life of the circuit breaker are improved, and the vacuum circuit breaker is suitable for frequent operation places.

According to some embodiments of the utility model, the arm subassembly is touched in the same period includes two swinging arm pieces and two spacing posts, two the swinging arm piece is located respectively the circumference both sides of ring channel, two spacing post sets up respectively two on the swinging arm piece, two the joint is in respectively to the one end of spacing post on the ring channel, swinging arm piece one end with spacing connection of post, the swinging arm piece other end with synchronizing shaft connects.

According to some embodiments of the utility model, permanent magnetic mechanism is including moving iron core and quiet iron core, it is located to move the iron core the top of quiet iron core, the transmission assembly top is passed quiet iron core with it connects to move the iron core.

According to some embodiments of the utility model, the casing includes last fixed bolster, lower fixed bolster, insulation board and fixed plate, go up the fixed bolster with lower fixed bolster all sets up on the insulation board, vacuum interrupter chamber subassembly sets up go up the fixed bolster with between the lower fixed bolster, the fixed plate sets up the upper end of insulation board, permanent magnetism mechanism sets up on the fixed plate.

According to some embodiments of the utility model, vacuum arc extinguishing chamber subassembly has the vacuum arc extinguishing chamber, the static contact lower extreme with fixed bolster is connected down, the static contact upper end is located in the vacuum arc extinguishing chamber, the moving contact upper end with go up fixed bolster sliding connection, the moving contact lower extreme is located in the vacuum arc extinguishing chamber.

According to the utility model discloses a some embodiments, transmission assembly includes transfer line and contact spring, the transfer line upper end is connected permanent magnetic mechanism, the transfer line lower extreme is connected the moving contact, the contact spring housing is established on the transfer line, contact spring one end with the transfer line is connected, the contact spring other end with go up the fixed bolster and connect.

According to the utility model discloses a some embodiments, still be provided with connecting conductor on the transfer line, the static contact lower extreme is provided with connecting conductor down.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

fig. 1 is a sectional view of a vacuum circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a vacuum circuit breaker according to an embodiment of the present invention;

fig. 3 is an enlarged view of a in fig. 2.

Reference numerals:

a housing 10; a permanent magnet mechanism 11; a movable iron core 111; a stationary core 112; a vacuum interrupter assembly 12; a stationary contact 121; a lower connection conductor 1211; a vacuum arc-extinguishing chamber 122; an upper fixing bracket 13; a lower fixing bracket 14; an insulating plate 15; a fixed plate 16;

a transmission assembly 20; a movable contact 21; an annular groove 22; a transmission rod 23; an upper connection conductor 231;

a synchronous opening mechanism 30; the synchronizing shaft 31; a synchronization arm assembly 32; a swinging arm member 321; a retaining post 322.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, 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 there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

A vacuum circuit breaker according to an embodiment of the present invention is described with reference to fig. 1 to 3.

Referring to fig. 1 to 3, in some embodiments, the vacuum circuit breaker includes a housing 10, a transmission assembly 20, and a synchronous opening mechanism 30. The upper end of the shell 10 is provided with a permanent magnet mechanism 11, the lower end of the shell 10 is provided with a vacuum arc extinguishing chamber component 12, the vacuum arc extinguishing chamber component 12 is provided with a static contact 121, the upper end of the transmission component 20 is connected with the permanent magnet mechanism 11, the lower end of the transmission component 20 is provided with a movable contact 21, the transmission component 20 can be movably arranged in the shell 10 along the vertical direction, and the transmission component 20 is provided with an annular groove 22. The synchronous opening mechanism 30 comprises a synchronous shaft 31 and a synchronous contact arm assembly 32, one end of the synchronous contact arm assembly 32 is connected with the synchronous shaft 31, and the other end of the synchronous contact arm assembly 32 is connected with the annular groove 22. It can be understood that permanent magnetic mechanism 11 can drive transmission component 20 to move along the vertical direction, make moving contact 21 can contact with static contact 121 or separate, transmission component 20 reciprocates along the vertical direction, make annular groove 22 can drive synchronizing shaft 31 through in phase contact arm component 32 and rotate, and similarly, through artifical rotation synchronizing shaft 31, in phase contact arm component 32 can drive transmission component 20 through annular groove 22 and move along the vertical direction, and then realize manual separation moving contact 21 and static contact 121. The permanent magnet mechanism 11 drives the transmission assembly 20 in a direct-drive mode, so that a plurality of transmission links are reduced, the circuit breaker has excellent opening and closing characteristics, the opening time is reduced, and the requirement of quickly cutting off a power grid is met; the synchronous opening mechanism 30 is utilized to realize the manual opening function, when the circuit breaker is in a closing state, the control loop can manually perform emergency opening when power is off, the permanent magnetic mechanism 11 controls opening and closing through an external controller, the opening and closing control accuracy and the service life of the circuit breaker are improved, and the vacuum circuit breaker is suitable for frequent operation places, compact in structural layout, small in number of parts, simple in processing and assembling process, capable of greatly improving production efficiency, reducing production cost and remarkable in economic benefit.

It should be noted that, referring to fig. 1 to fig. 3, in some embodiments, the synchronous contact arm assembly 32 includes two swinging arm members 321 and two limiting posts 322, the two swinging arm members 321 are respectively located at two circumferential sides of the annular groove 22, the two limiting posts 322 are respectively disposed on the two swinging arm members 321, one ends of the two limiting posts 322 are respectively clamped on the annular groove 22, one end of the swinging arm member 321 is fixedly connected to the limiting post 322, and the other end of the swinging arm member 321 is fixedly connected to the synchronizing shaft 31. It can be understood that when the operator rotates the synchronizing shaft 31, the swinging arm 321 rotates together with the synchronizing shaft 31, and the limiting post 322 drives the transmission assembly 20 to move up and down along the vertical direction through the annular groove 22.

Referring to fig. 1 and 2, in some embodiments, the permanent magnet mechanism 11 includes a movable iron core 111 and a stationary iron core 112, the movable iron core 111 is located above the stationary iron core 112, and the top of the transmission assembly 20 passes through the stationary iron core 112 and is connected to the movable iron core 111. It can be understood that the stationary core 112 is used for generating magnetic force, the movable core 111 moves downward under the action of the magnetic force to be in contact with the stationary core 112, and then the transmission assembly 20 is driven to move downward, so that the movable contact 21 is in contact with the fixed contact 121, when the vacuum circuit breaker is in a closing state, a manual opening function is realized through the synchronous opening mechanism 30, and emergency opening can be manually performed when a control loop has a power failure.

Referring to fig. 1 and 2, in some embodiments, the case 10 includes an upper fixing bracket 13, a lower fixing bracket 14, an insulating plate 15, and a fixing plate 16. The upper fixing support 13 and the lower fixing support 14 are both arranged on an insulating plate 15, the vacuum interrupter chamber assembly 12 is arranged between the upper fixing support 13 and the lower fixing support 14, the fixing plate 16 is arranged at the upper end of the insulating plate 15, and the permanent magnet mechanism 11 is arranged on the fixing plate 16.

It should be noted that, referring to fig. 1, in some embodiments, the vacuum arc extinguish chamber assembly 12 has a vacuum arc extinguish chamber 122, the lower end of the stationary contact 121 is connected to the lower fixed bracket 14, the upper end of the stationary contact 121 is located in the vacuum arc extinguish chamber 122, the upper end of the movable contact 21 is slidably connected to the upper fixed bracket 13, the lower end of the movable contact 21 is located in the vacuum arc extinguish chamber 122, and the movable contact 21 and the stationary contact 121 are in contact in the vacuum arc extinguish chamber 122.

Further, referring to fig. 1, the driving assembly 20 includes a driving rod 23 and a contact spring (not shown). The upper end of the transmission rod 23 is connected with the permanent magnet mechanism 11, the lower end of the transmission rod 23 is connected with the movable contact 21, the contact spring is sleeved on the transmission member, the upper end of the contact spring is connected with the transmission rod 23, the lower end of the contact spring is connected with the upper fixing support 13, the transmission rod 23 is further provided with an upper connecting conductor 231, the upper connecting conductor 231 is located between the synchronous opening mechanism 30 and the contact spring, and the lower end of the fixed contact 121 is provided with a lower connecting conductor 1211. It can be understood that the contact spring can generate an upward elastic force on the transmission rod 23, so that the transmission rod 23 can move upward more rapidly under the driving of the synchronous opening mechanism 30, and the opening time is ensured to be less than 5 ms.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A vacuum interrupter, comprising:

the vacuum arc extinguishing chamber comprises a shell, wherein a permanent magnet mechanism is arranged at one end of the shell, a vacuum arc extinguishing chamber component is arranged at the other end of the shell, and a static contact is arranged on the vacuum arc extinguishing chamber component;

one end of the transmission component is connected with the permanent magnet mechanism, a moving contact capable of being in contact with the fixed contact is arranged at the other end of the transmission component, the permanent magnet mechanism is used for driving the transmission component to move along the vertical direction, and an annular groove is formed in the transmission component; and

synchronous separating brake mechanism, synchronous separating brake mechanism includes synchronizing shaft and in same phase contact arm subassembly, in same phase contact arm subassembly one end with synchronizing shaft connects, in same phase contact arm subassembly other end with the ring channel is connected, works as the rotation synchronizing shaft, in same phase contact arm subassembly passes through the ring channel drives transmission assembly removes along vertical direction.

2. The vacuum circuit breaker according to claim 1, wherein the synchronous contact arm assembly comprises two swinging arm members and two limiting posts, the two swinging arm members are respectively located at two circumferential sides of the annular groove, the two limiting posts are respectively arranged on the two swinging arm members, one ends of the two limiting posts are respectively clamped on the annular groove, one end of the swinging arm member is connected with the limiting posts, and the other end of the swinging arm member is connected with the synchronizing shaft.

3. The vacuum circuit breaker according to claim 1, wherein the permanent magnet mechanism comprises a movable iron core and a stationary iron core, the movable iron core is located above the stationary iron core, and the top of the transmission assembly passes through the stationary iron core and is connected with the movable iron core.

4. The vacuum circuit breaker according to claim 1, wherein the housing includes an upper fixing bracket, a lower fixing bracket, an insulating plate, and a fixing plate, the upper fixing bracket and the lower fixing bracket are both disposed on the insulating plate, the vacuum interrupter chamber assembly is disposed between the upper fixing bracket and the lower fixing bracket, the fixing plate is disposed at an upper end of the insulating plate, and the permanent magnet mechanism is disposed on the fixing plate.

5. The vacuum circuit breaker as claimed in claim 4, wherein the vacuum arc extinguishing chamber assembly has a vacuum arc extinguishing chamber, the lower end of the static contact is connected to the lower fixed bracket, the upper end of the static contact is located in the vacuum arc extinguishing chamber, the upper end of the movable contact is slidably connected to the upper fixed bracket, and the lower end of the movable contact is located in the vacuum arc extinguishing chamber.

6. The vacuum circuit breaker according to claim 5, wherein the transmission assembly comprises a transmission rod and a contact spring, the upper end of the transmission rod is connected with the permanent magnet mechanism, the lower end of the transmission rod is connected with the movable contact, the contact spring is sleeved on the transmission rod, one end of the contact spring is connected with the transmission rod, and the other end of the contact spring is connected with the upper fixed bracket.

7. The vacuum circuit breaker as claimed in claim 6, wherein the transmission rod is further provided with an upper connecting conductor, and the lower end of the stationary contact is provided with a lower connecting conductor.