CN218826929U - Arc extinguishing system of circuit breaker - Google Patents
Arc extinguishing system of circuit breaker Download PDFInfo
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- CN218826929U CN218826929U CN202222613853.5U CN202222613853U CN218826929U CN 218826929 U CN218826929 U CN 218826929U CN 202222613853 U CN202222613853 U CN 202222613853U CN 218826929 U CN218826929 U CN 218826929U
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- arc
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- extinguishing grid
- circuit breaker
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Abstract
The utility model provides an arc extinguishing system of circuit breaker, includes moving contact (1) and static contact (2), the break-make of circuit breaker circuit is being controlled in the joint or the branch of moving contact (1) and static contact (2), its characterized in that: moving contact (1) are provided with first arc extinguishing bars group (3) and second arc extinguishing bars group (4) of arranging side by side about at least two for the corresponding position that static contact (2) were opened, arrange about this arc extinguishing systems's arc extinguishing bars piece adopts, can be under the limited situation of explosion chamber direction of height, arrange more arc extinguishing bars pieces about direction, compare the structure of current individual layer arc extinguishing bars piece of arranging, arrange that multilayer arc extinguishing bars piece group can place more arc extinguishing bars pieces under the prerequisite that does not increase high space, and only need a long connecting plate to associate between two sets of arc extinguishing bars pieces, thereby realize breaking the high voltage more.
Description
Technical Field
The utility model belongs to the technical field of low-voltage apparatus, specifically say so and relate to an arc extinguishing system of circuit breaker.
Background
In the field of low-voltage electrical appliances, a frame circuit breaker is generally a main protection switch on a power supply side, so that the frame circuit breaker has extremely high requirements on the breaking capacity, the breaking capacity of the frame circuit breaker is challenged along with the continuous improvement of the rated working voltage of the frame circuit breaker, and the problem that how to reliably break fault current of the frame circuit breaker under the conditions of high voltage and large current is difficult is particularly obvious when the frame circuit breaker is applied to a high-voltage IT system.
The frame circuit breaker, one of the electrical components of the control circuit, plays a role in control and protection in the power system, and is widely used in many production processes and technical equipment. The frame type circuit breaker mainly comprises a conductive system, an arc extinguishing system, an operating mechanism and the like, wherein an arc extinguishing chamber is an important part in the arc extinguishing system of the circuit breaker.
The arc extinguish chamber of the existing frame circuit breaker is of a single-layer arc extinguish chamber structure, and arc extinguish grid plates in the arc extinguish chamber are generally arranged in parallel or in a radial mode. During the separating of brake, electric arc is elongated then cut apart electric arc in order to reach the purpose of putting out the arc fast under the effect of arc extinguishing bars piece, but along with the development of circuit breaker to the high voltage direction, when the explosion chamber on the market is dividing disconnected big voltage at present, because the contact is opened the direction space and is limited, arc extinguishing bars piece quantity is difficult to increase again, and arc extinguishing system is difficult to divide disconnected direct current high voltage current, can't satisfy the operation requirement of electric power system to the high voltage.
SUMMERY OF THE UTILITY MODEL
The utility model aims at exactly being to above-mentioned current frame circuit breaker's arc extinguishing system because the direction space is opened to the contact is limited, arc extinguishing bars piece quantity hardly increases again, arc extinguishing system is hardly disconnected direct current high voltage electric current, can't satisfy electric power system to the operation requirement's of high voltage defect, an arc extinguishing system of circuit breaker is provided, arrange about the arc extinguishing bars piece adopts, compare the structure of current individual layer arc extinguishing bars piece of arranging, arrange of multilayer arc extinguishing bars piece group can place more arc extinguishing bars pieces under the prerequisite that does not increase high space, thereby realize that the branch of higher voltage divides.
Technical scheme
In order to realize the technical purpose, the utility model provides a pair of arc extinguishing system of circuit breaker, including moving contact and static contact, the break-make of circuit breaker circuit is being controlled, its characterized in that to the joint of moving contact and static contact or divide absolutely: and at least two first arc-extinguishing grid groups and at least two second arc-extinguishing grid groups which are arranged side by side at the left and right sides are arranged at the corresponding positions of the moving contact which are opened relative to the static contact.
Furthermore, one end of the movable arc striking plate corresponds to the position of the contact end when the movable contact is in an open state, the other end of the movable arc striking plate corresponds to one side end of one arc extinguishing grid group in the first arc extinguishing grid group and the second arc extinguishing grid group, the contact end of the fixed contact is fixedly connected with one end of the fixed arc striking plate, and the other end of the fixed arc striking plate corresponds to one side end of the other arc extinguishing grid group in the first arc extinguishing grid group and the second arc extinguishing grid group.
Furthermore, one end of the long connecting plate is arranged at the other side end of one of the first arc-extinguishing grid group and the second arc-extinguishing grid group, and the other end of the long connecting plate is arranged at the corresponding other side end of the other one of the first arc-extinguishing grid group and the second arc-extinguishing grid group.
Furthermore, the at least two first arc extinguishing grid group and the second arc extinguishing grid group which are arranged side by side from left to right are positioned in the shell of the arc extinguishing chamber.
Furthermore, an arc ignition part is arranged on the long connecting plate and is positioned on a path where the moving contact and the static contact are opened.
Furthermore, the other end of the movable arc striking plate is parallel to the first arc extinguishing grid plate at the top end of the first arc extinguishing grid plate group.
Furthermore, the other end of the static arc striking plate is parallel to the second arc extinguishing grid plate at the bottom side end of the second arc extinguishing grid plate group.
Furthermore, one end of the long connecting plate is arranged at the bottom side end of the first arc-extinguishing grid group, and the other end of the long connecting plate is arranged at the top side end of the second arc-extinguishing grid group.
Further, an arc striking part is arranged at the bottom of the long connecting plate.
Further, an insulating component is arranged between the first arc extinguishing grid group and the second arc extinguishing grid group.
Advantageous effects
The utility model provides a pair of arc extinguishing system of circuit breaker, arrange about the arc extinguishing bars piece adopts, can be under the limited situation of explosion chamber direction of height, direction arrange more arc extinguishing bars pieces about, compare the structure of current individual layer arc extinguishing bars piece of arranging, arrange that multilayer arc extinguishing bars piece group can place more arc extinguishing bars pieces under the prerequisite that does not increase the high space, and only need a long connecting plate to carry out the relevance between two sets of arc extinguishing bars pieces to realize the branch of higher voltage and divide.
Drawings
Fig. 1 is a schematic view of an arc extinguishing system in embodiment 1 of the present invention;
fig. 2 is a schematic view of a front view of an arc extinguishing system in embodiment 1 of the present invention;
fig. 3 is a schematic view of the position relationship among the arc-extinguishing grid group, the arc striking plate and the long connecting plate in embodiment 1 of the present invention;
FIG. 4 is a schematic view of the position relationship of the arc-extinguishing grid set, the arc-striking plate and the long connecting plate in the embodiment 1 of the present invention
Fig. 5 is a schematic view of a long connecting plate in embodiment 1 of the present invention.
Fig. 6 is a schematic view of a long connecting plate in embodiment 2 of the present invention.
Fig. 7 is a schematic view of a long connecting plate in embodiment 3 of the present invention.
Fig. 8 is a schematic view of a long connecting plate in embodiment 4 of the present invention.
Fig. 9a is a schematic view of an arc extinguishing system according to embodiment 5 of the present invention;
fig. 9b is a schematic front view of an arc extinguishing system according to embodiment 5 of the present invention;
fig. 9c is a schematic view of a positional relationship between an arc-extinguishing grid set, an arc striking plate and a long connecting plate according to embodiment 5 of the present invention;
fig. 9d is a schematic view of the position relationship between the arc-extinguishing grid set, the arc-striking plate and the long connecting plate in the embodiment 5 of the present invention
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail with reference to specific embodiments and drawings.
Example 1
As shown in fig. 1 and 2, an arc extinguishing system of a circuit breaker includes a moving contact 1 and a static contact 2, the connection or disconnection of the moving contact 1 and the static contact 2 controls the on-off of a circuit of the circuit breaker, at least two first arc extinguishing grid groups 3 and two second arc extinguishing grid groups 4 arranged side by side left and right are arranged at positions corresponding to the opening position of the static contact 2 of the moving contact 1, and the at least two first arc extinguishing grid groups 3 and the at least two second arc extinguishing grid groups 4 arranged side by side left and right are located in a housing 8 of the arc extinguishing chamber. In this embodiment, the number of the first arc chute blade group 3 and the second arc chute blade group 4 is one.
One end of the movable arc striking plate 5 corresponds to a contact end when the movable contact 1 is in an open state, and the other end of the movable arc striking plate 5 corresponds to one side end of one of the first arc chute group 3 and the second arc chute group 4, as shown in fig. 3 and 4, in this embodiment, the other end of the movable arc striking plate 5 corresponds to one side end of the first arc chute group 3, specifically, the other end y of the movable arc striking plate 5 is preferably arranged in parallel with the first arc chute sheet 3a at the top end of the first arc chute group 3.
The contact end of the fixed contact 2 is fixedly connected with one end of a fixed arc striking plate 6, the contact end of the fixed contact 2 is fixedly connected with one end of the fixed arc striking plate 6, the other end of the fixed arc striking plate 6 corresponds to one corresponding side end of the other arc extinguishing grid group in the first arc extinguishing grid group 3 and the second arc extinguishing grid group 4, as shown in fig. 3 and 4, in this embodiment, the other end of the fixed arc striking plate 6 corresponds to one side end of the second arc extinguishing grid group 4, and specifically, the other end of the fixed arc striking plate 6 is preferably arranged in parallel with the second arc extinguishing grid piece 4a at the bottom end of the second arc extinguishing grid group 4.
One end of the long connecting plate 7 is disposed at the other side end of one of the first arc-extinguishing grid group 3 and the second arc-extinguishing grid group 4, and the other end of the long connecting plate 7 is disposed at the corresponding other side end of the other one of the first arc-extinguishing grid group 3 and the second arc-extinguishing grid group 4. As shown in fig. 1 and 2, in this embodiment, one end of the long connecting plate 7 is disposed at the bottom side end of the first arc chute group 3, and the other end of the long connecting plate 7 is disposed at the top side end of the second arc chute group 4. The long connecting plate 7 is preferably inserted into the housing 8. Specifically, two ends of the long connecting plate 7 are respectively parallel to the arc-extinguishing grid plates at the corresponding side ends of the first arc-extinguishing grid plate group 3 and the second arc-extinguishing grid plate group 4.
As shown in fig. 1 and 2, an arc striking portion 7a is disposed on the long connecting plate 7 and is located on a path where the movable contact 1 and the fixed contact 2 are opened. In this embodiment, the long connecting plate 7 is a structure with a projection similar to a "Y" shape, and the bottom of the long connecting plate 7 with the "Y" shape is an arc striking part 7a, so that the structure can bear the ending and starting ends of two groups of grids on one hand, and can better bear the arc on the moving contact when the contact is opened on the other hand. As shown in fig. 5, in the present embodiment, the arc striking part 7a includes a left bottom arm and a right bottom arm corresponding to the left side arm and the right side arm of the long connecting plate 7, respectively.
In the process of opening, when the moving contact 1 is just opened, due to the action of the static arc striking plate 6, the electric arc enters the second arc extinguishing grid group 4 through the moving contact 1 and then reaches the static arc striking plate 6, along with the opening of the moving contact 1, after the electric arc moves to the position of the long connecting plate 7, the electric arc enters the second arc extinguishing grid group 4 through the long connecting plate 7 and then reaches the static arc striking plate 6, and at the moment, the electric arc completely enters the second arc extinguishing grid group 4; with the continuous opening of the moving contact 1, the electric arc starts to enter the first arc-extinguishing grid group 3 until the moving contact 1 is completely opened, the electric arc is transferred to the moving arc-striking plate 5 at the moment, and the electric arc completely enters the second arc-extinguishing grid group 4 and the first arc-extinguishing grid group 3 at the moment.
After the electric arc completely enters the two groups of grid pieces, the electric arc is cut under the action of the plurality of grid pieces in the two groups of grid pieces, and the capacity of breaking the large voltage of the arc extinguishing system is achieved.
Example 2
As shown in fig. 6, in this embodiment, the arc striking part 7a is an integral body, the left and right arms of the long connecting plate 7 directly extend from the bottom of the integral body, and other structures and operation principles are the same as those of embodiment 1.
Example 3
As shown in fig. 7, in this embodiment, the arc striking part 7a is a structure with a projection similar to a "U", the left and right arms of the long connecting plate 7 are led out from the two side walls of the "U", and other structures and operation principles are the same as those of embodiment 1.
Example 4
As shown in fig. 8, in this embodiment, the long connecting plate 7 is a structure with a projection similar to a "U", the arc striking part 7a is the bottom of the "U", and other structures and operating principles are the same as those of embodiment 1.
Example 5
As shown in fig. 9a, 9b, 9c and 9d, in this embodiment, an insulating member 9 is disposed between the first arc chute blade group 3 and the second arc chute blade group 4, and other structures and operation principles are the same as those of embodiment 1.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the invention in its corresponding aspects.
Claims (10)
1. The utility model provides an arc extinguishing system of circuit breaker, includes moving contact (1) and static contact (2), the break-make of circuit breaker circuit is being controlled in the joint or the branch of moving contact (1) and static contact (2), its characterized in that: the moving contact (1) is provided with at least two first arc extinguishing grid group (3) and second arc extinguishing grid group (4) which are arranged side by side from left to right in the corresponding opened positions relative to the static contact (2).
2. The arc extinguishing system of a circuit breaker of claim 1, wherein: one end of the movable arc striking plate (5) corresponds to the position of a contact end when the movable contact (1) is in an open state, the other end of the movable arc striking plate (5) corresponds to one side end of one arc extinguishing grid group in the first arc extinguishing grid group (3) and the second arc extinguishing grid group (4), the contact end of the fixed contact (2) corresponds to one end of the static arc striking plate (6), and the other end of the static arc striking plate (6) corresponds to one side end of the other arc extinguishing grid group in the first arc extinguishing grid group (3) and the second arc extinguishing grid group (4).
3. An arc extinguishing system of a circuit breaker according to claim 2, characterized in that: one end of the long connecting plate (7) is arranged at the other side end of one of the first arc-extinguishing grid group (3) and the second arc-extinguishing grid group (4), and the other end of the long connecting plate (7) is arranged at the corresponding other side end of the other one of the first arc-extinguishing grid group (3) and the second arc-extinguishing grid group (4).
4. The arc extinguishing system of a circuit breaker of claim 1, wherein: the first arc extinguishing grid group (3) and the second arc extinguishing grid group (4) which are arranged side by side from left to right are positioned in a shell (8) of the arc extinguishing chamber.
5. An arc extinguishing system of a circuit breaker according to claim 3, characterized in that: an arc ignition part (7 a) is arranged on the long connecting plate (7) and is positioned on a path where the moving contact (1) and the static contact (2) are opened.
6. The arc extinguishing system of a circuit breaker of claim 2, wherein: the other end of the movable arc striking plate (5) is parallel to the first arc extinguishing grid sheet (3 a) at the top end of the first arc extinguishing grid sheet group (3).
7. The arc extinguishing system of a circuit breaker of claim 2, wherein: the other end of the static arc striking plate (6) is parallel to the second arc extinguishing grid sheet (4 a) at the bottom side end of the second arc extinguishing grid sheet group (4).
8. An arc extinguishing system of a circuit breaker according to claim 3, characterized in that: one end of the long connecting plate (7) is arranged at the bottom side end of the first arc-extinguishing grid group (3), and the other end of the long connecting plate (7) is arranged at the top side end of the second arc-extinguishing grid group (4).
9. The arc extinguishing system of a circuit breaker of claim 8, wherein: the bottom of the long connecting plate (7) is provided with an arc ignition part (7 a).
10. An arc extinguishing system of a circuit breaker according to claim 2, characterized in that: and an insulating component (9) is arranged between the first arc-extinguishing grid group (3) and the second arc-extinguishing grid group (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222613853.5U CN218826929U (en) | 2022-09-30 | 2022-09-30 | Arc extinguishing system of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222613853.5U CN218826929U (en) | 2022-09-30 | 2022-09-30 | Arc extinguishing system of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218826929U true CN218826929U (en) | 2023-04-07 |
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ID=87257893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222613853.5U Active CN218826929U (en) | 2022-09-30 | 2022-09-30 | Arc extinguishing system of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218826929U (en) |
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2022
- 2022-09-30 CN CN202222613853.5U patent/CN218826929U/en active Active
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