CN218602369U - Grid arc extinguish chamber of circuit breaker - Google Patents
Grid arc extinguish chamber of circuit breaker Download PDFInfo
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- CN218602369U CN218602369U CN202222625412.7U CN202222625412U CN218602369U CN 218602369 U CN218602369 U CN 218602369U CN 202222625412 U CN202222625412 U CN 202222625412U CN 218602369 U CN218602369 U CN 218602369U
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Abstract
The utility model provides a bars piece explosion chamber of circuit breaker, includes moving contact (1) and static contact (2), the break-make of circuit breaker circuit is being controlled, its characterized in that to the joint or divide of moving contact (1) and static contact (2): one end of the movable arc striking plate (3) corresponds to the position of a contact end of the movable contact (1) in an open state, the other end of the movable arc striking plate (3) corresponds to one side end of the arc extinguishing grid group (4), the contact end of the fixed contact (2) is fixedly connected with one end of the fixed arc striking plate (5), the other end of the fixed arc striking plate (5) corresponds to the other side end of the arc extinguishing grid group (4), and at least one long grid piece assembly (6) is arranged in the arc extinguishing grid group (4). The arc extinguish chamber adopts the form of the long grid pieces, and the arrangement mode of increasing the grid pieces at the upper ends of the long grid pieces is adopted, so that more grid pieces can be arranged on the premise of not influencing the arc striking effect, and the breaking of higher voltage can be realized finally.
Description
Technical Field
The utility model belongs to the technical field of low-voltage apparatus, specifically say so and relate to a grid piece explosion chamber of circuit breaker.
Background
The frame circuit breaker is 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 main structure of the frame type circuit breaker comprises a conductive system, an arc extinguishing system, an operating mechanism and the like, wherein the arc extinguishing chamber is an important component in the arc extinguishing system of the circuit breaker.
The existing frame arc extinguish chamber generally adopts a single-layer arc extinguish chamber structure with arc extinguish grid pieces arranged in parallel and in a radial mode, when the arc extinguish chamber is switched off, the arc is elongated and then is divided under the action of the grid pieces so as to achieve rapid arc extinction, but the circuit breaker is developed towards the direction of high voltage, and an arc extinguish system of the arc extinguish chamber in the current market is not enough to bear breaking voltage of the existing high voltage when the arc extinguish chamber breaks the large voltage, so that the use requirement of the existing high voltage breaking can not be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a grid piece explosion chamber of circuit breaker, the form of long grid piece is adopted to the arc extinguishing system of the explosion chamber to above-mentioned current frame circuit breaker is not enough to bear the disconnected defect of the disconnected voltage of high voltage when disconnected high voltage, adopts the mode of arranging that increases the grid piece in the upper end of long grid piece to carry out more grid pieces of arranging under the prerequisite that does not influence the effect of striking, finally can realize the disconnected of higher voltage.
Technical scheme
In order to realize the technical purpose, the utility model provides a pair of grid piece explosion chamber 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: one end of the movable arc striking plate corresponds to the position of the contact end of the movable contact in an open state, the other end of the movable arc striking plate corresponds to one side end of the arc extinguishing grid group, the contact end of the fixed contact is fixedly connected with one end of the fixed arc striking plate, the other end of the fixed arc striking plate corresponds to the other side end of the arc extinguishing grid group, and at least one long grid piece assembly is arranged in the arc extinguishing grid group.
Furthermore, the lower part of the long grid plate assembly is positioned between two adjacent arc extinguishing grid plates in the arc extinguishing grid plate group, and the upper part of the long grid plate assembly extends out of the arc extinguishing grid plate group.
Furthermore, the long grid plate assembly at least comprises a first long grid plate and a second long grid plate, the first long grid plate and the second long grid plate are arranged oppositely, and the lower part of the first long grid plate and the lower part of the second long grid plate are arranged between two adjacent arc-extinguishing grid plates in the arc-extinguishing grid plate group.
Furthermore, an insulating partition plate is arranged between the lower part of the first long grid and the lower part of the second long grid, and at least one arc grid is arranged between the upper part of the first long grid and the upper part of the second long grid.
Furthermore, air holes are formed in the connecting positions of the upper portions and the lower portions of the first long grid pieces and the second long grid pieces.
Furthermore, the first long grid plate and the second long grid plate are Z-shaped structures.
Furthermore, the first long grid plate and the second long grid plate are arranged in a mirror image mode.
Further, the number of the first arc chute pieces is preferably 3.
Furthermore, the other end of the movable arc striking plate is parallel to one side end of the arc extinguishing grid group.
Furthermore, the other end of the static arc striking plate is parallel to the other side end of the arc extinguishing grid group.
Advantageous effects
The utility model provides a pair of grid piece explosion chamber of circuit breaker adopts the form of long grid piece, can arrange more grid pieces at the direction of depth under the limited situation of explosion chamber width and length direction, compares original grid piece and arranges, adopts the mode of arranging that increases the grid piece in the upper end of long grid piece can carry out more grid pieces of arranging under the prerequisite that does not influence the effect of striking, finally can realize the branch of higher voltage and divide.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 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 below with reference to specific embodiments and with reference to the attached drawings.
Example 1
As shown in fig. 1, a grid arc-extinguishing chamber 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, one end of a moving arc-striking plate 3 corresponds to the position of a contact end of the moving contact 1 in an open state, the other end of the moving arc-striking plate 3 corresponds to one side end of an arc-extinguishing grid set 4, the contact end of the static contact 2 is fixedly connected with one end of a static arc-striking plate 5, the other end of the static arc-striking plate 5 corresponds to the other side end of the arc-extinguishing grid set 4, and at least one long grid assembly 6 is arranged in the arc-extinguishing grid set 4. The lower part of the long grid piece assembly 6 is positioned between two adjacent arc extinguishing grid pieces in the arc extinguishing grid piece group 4, and the upper part of the long grid piece assembly 6 extends out of the arc extinguishing grid piece group 4. In this embodiment, the other end of the movable arc striking plate 3 and one side end of the arc extinguishing grid group 4 are preferably arranged in parallel. The other end of the static arc striking plate 5 and the other side end of the arc extinguishing grid group 4 are preferably arranged in parallel.
The long grid plate assembly 6 at least comprises a first long grid plate 6a and a second long grid plate 6b, wherein the first long grid plate 6a and the second long grid plate 6b are arranged oppositely, and in the embodiment, the first long grid plate 6a and the second long grid plate 6b are arranged oppositely in a mirror image mode. The lower parts of the first long grid pieces 6a and the second long grid pieces 6b are arranged between two adjacent arc-extinguishing grid pieces in the arc-extinguishing grid piece group 4, an insulating partition plate 7 is arranged between the lower parts of the first long grid pieces 6a and the second long grid pieces 6b, and at least one first arc-extinguishing grid piece 6c is arranged between the upper parts of the first long grid pieces 6a and the second long grid pieces 6 b. And air holes 6d are formed at the joint of the upper part and the lower part of the first long grid sheet 6a and the second long grid sheet 6 b. In this embodiment, the first long grid piece 6a and the second long grid piece 6b are preferably in a "Z" shape, and the number of the first arc extinguishing grid pieces 6c is preferably 3. It should be noted that, the first long grid piece 6a and the second long grid piece 6b are preferably "Z" shaped structures, and are not necessarily both "Z" shaped structures, and one is a "Z" shaped structure, and the other is not a "Z" shaped structure, which shall also fall within the protection scope of the present invention.
In the process of opening the switch, the moving contact 1 is opened, electric arcs can enter an arc extinguish chamber, when the electric arcs pass through the long grid piece assembly 6, due to the action of the insulating partition plate 7, the electric arcs cannot be directly broken down at the lower end of the long grid piece assembly to form a loop, at the moment, under the arc striking action of the long grid piece I6 a and the long grid piece II 6b, the electric arcs enter the arc extinguish grid piece I6 c at the upper part through the long grid piece I6 a and the long grid piece II 6b, in order to better guide the electric arcs to the arc extinguish grid piece I6 c at the upper part of the long grid piece assembly 6, air holes 6d are formed in the bending positions of the first sections of the long grid piece I6 a and the long grid piece II 6b and used for guiding hot air flow at the lower end into the upper parts of the long grid piece I6 a and the long grid piece II 6b, and the electric arcs can be better led to the long grid piece assembly 6 at the upper end to form breakdown through the arc extinguish grid piece 4. Due to the introduction of the long grid piece assembly 6, the original electric arc is only cut by two grid pieces at the position and becomes 3 or more grid pieces, and therefore the number of effective grid pieces for cutting the electric arc can be increased by adding multiple groups of long grid pieces in the long grid piece assembly 6.
When the contact is opened, the electric arc can completely enter the arc extinguish chamber, and the electric arc is cut under the action of the plurality of grid plates in the long grid plate assembly 6, so that the large voltage breaking capacity of the arc extinguish system is achieved.
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 and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a bars piece explosion chamber of circuit breaker, includes moving contact (1) and static contact (2), the break-make of circuit breaker circuit is being controlled, its characterized in that to the joint or divide of moving contact (1) and static contact (2): one end of the movable arc striking plate (3) corresponds to the position of a contact end of the movable contact (1) in an open state, the other end of the movable arc striking plate (3) corresponds to one side end of the arc extinguishing grid group (4), the contact end of the fixed contact (2) is fixedly connected with one end of the fixed arc striking plate (5), the other end of the fixed arc striking plate (5) corresponds to the other side end of the arc extinguishing grid group (4), and at least one long grid piece assembly (6) is arranged in the arc extinguishing grid group (4).
2. A grid arc chute for a circuit breaker as claimed in claim 1, wherein: the lower part of the long grid plate assembly (6) is positioned between two adjacent arc-extinguishing grid plates in the arc-extinguishing grid plate group (4), and the upper part of the long grid plate assembly (6) extends out of the arc-extinguishing grid plate group (4).
3. A grid arc chute for a circuit breaker as claimed in claim 1, wherein: the long grid plate assembly (6) at least comprises a first long grid plate (6 a) and a second long grid plate (6 b), the first long grid plate (6 a) and the second long grid plate (6 b) are arranged oppositely, and the lower portion of the first long grid plate (6 a) and the lower portion of the second long grid plate (6 b) are arranged between two adjacent arc-extinguishing grid plates in the arc-extinguishing grid plate group (4).
4. A grid arc chute for a circuit breaker as claimed in claim 3, wherein: an insulating partition plate (7) is arranged between the lower portion of the first long grid piece (6 a) and the lower portion of the second long grid piece (6 b), and at least one arc-extinguishing grid piece (6 c) is arranged between the upper portion of the first long grid piece (6 a) and the upper portion of the second long grid piece (6 b).
5. A grid arc chute of a circuit breaker as claimed in claim 3 or 4, characterized in that: and air holes (6 d) are formed at the joint of the upper part and the lower part of the first long grid sheet (6 a) and the second long grid sheet (6 b).
6. A grid arc chute for a circuit breaker as claimed in claim 3, wherein: the first long grid sheet (6 a) and the second long grid sheet (6 b) are Z-shaped structures.
7. A grid arc chute of a circuit breaker as claimed in claim 4, characterized in that: the first long grid sheet (6 a) and the second long grid sheet (6 b) are arranged in a mirror image mode relatively.
8. A grid arc chute of a circuit breaker as claimed in claim 4, characterized in that: the number of the first arc extinguishing grid pieces (6 c) is 3.
9. A grid arc chute for a circuit breaker as claimed in claim 1, wherein: the other end of the movable arc striking plate (3) is parallel to one side end of the arc extinguishing grid group (4).
10. A grid arc chute for a circuit breaker as claimed in claim 1, wherein: the other end of the static arc striking plate (5) is parallel to the other side end of the arc extinguishing grid group (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222625412.7U CN218602369U (en) | 2022-09-30 | 2022-09-30 | Grid arc extinguish chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222625412.7U CN218602369U (en) | 2022-09-30 | 2022-09-30 | Grid arc extinguish chamber of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218602369U true CN218602369U (en) | 2023-03-10 |
Family
ID=85400491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222625412.7U Active CN218602369U (en) | 2022-09-30 | 2022-09-30 | Grid arc extinguish chamber of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218602369U (en) |
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2022
- 2022-09-30 CN CN202222625412.7U patent/CN218602369U/en active Active
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