Arc isolating mechanism of arc extinguish chamber of circuit breaker
By installing an arc-isolating mechanism and a permanent magnet at the arc-starting port of the circuit breaker's arc-extinguishing chamber, the problem of the arc easily detaching from the side of the arc-starting port is solved, achieving faster arc-extinguishing speed and higher safety.
Patent Information
- Application Number
- CN202520019929.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-06
AI Technical Summary
The existing arc extinguishing chamber arc initiation port of the circuit breaker has an exposed structure, which makes it easy for the arc to escape from the side, causing safety hazards. In addition, the arc extinguishing effect is poor and the arc extinguishing speed is slow.
Design an arc-isolating mechanism for the arc-extinguishing chamber of a circuit breaker. The mechanism uses a left arc-isolating plate, a right arc-isolating plate, and a middle arc-isolating plate to seal the sides of the arc initiation port. A permanent magnet guides the electric arc into the arc-extinguishing chamber, and the movement of the electric arc is controlled by the magnetic fields of the left and right magnets.
It effectively prevents the electric arc from detaching from the sides, bottom and front of the arc initiation port, improves the arc isolation capability of the arc extinguishing chamber, enhances the safety of the circuit breaker, and accelerates the arc extinguishing efficiency.
Smart Images
Figure CN223693064U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to circuit breaker arc-extinguishing chamber technical field, concretely relates to a circuit breaker arc-extinguishing chamber arc separation mechanism. BACKGROUND
[0002] The arc-extinguishing chamber of the small circuit breaker is a key component for realizing reliable breaking of current. When a fault current occurs in the circuit, the moving and static contacts are separated under the action of electric repulsion, generating an arc. The arc-extinguishing chamber rapidly extinguishes the arc through various ways (such as splitting the arc with metal grid, cooling the arc, etc.) to protect the circuit and equipment safety.
[0003] The existing circuit breaker arc-extinguishing chamber is usually provided with an arc inlet, and the arc enters the inside of the arc-extinguishing chamber through the arc inlet. However, the arc inlet of the existing arc-extinguishing chamber is of a bare structure, which leads to the arc easily escaping from the side of the arc inlet, damaging other equipment and causing safety accidents. Moreover, the arc-in effect of the existing circuit breaker arc-extinguishing chamber is poor, which leads to the arc failing to quickly enter the inside of the arc-extinguishing chamber, resulting in slow arc-extinguishing speed.
[0004] Therefore, the applicant has made beneficial designs and found a method to solve the above problems. The technical scheme to be introduced below is generated in this background. CONTENT OF THE UTILITY MODEL
[0005] The utility model relates to a circuit breaker arc-extinguishing chamber arc separation mechanism to solve the problems raised in the background.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] A circuit breaker arc-extinguishing chamber arc separation mechanism, comprising an arc-extinguishing chamber body and an arc separation mechanism, wherein one side of the arc-extinguishing chamber body is provided with an arc inlet, the top of the arc inlet is provided with a moving contact and a static contact, the arc separation mechanism comprises a left arc separation plate, a right arc separation plate and a middle arc separation plate, the left arc separation plate and the right arc separation plate are respectively arranged on the left and right sides of the arc inlet, the middle arc separation plate is arranged on the front side of the arc inlet, a left mounting groove is formed on the side surface of the left arc separation plate away from the arc inlet, a right mounting groove is formed on the side surface of the right arc separation plate away from the arc inlet, a left magnet is arranged in the left mounting groove, and a right magnet is arranged in the right mounting groove.
[0008] Preferably, the left magnet and the right magnet are both made of permanent magnet.
[0009] Preferably, the bottom of the middle arc separation strip is provided with a connecting plate, the two sides of the connecting plate are both provided with a side groove, the bottom of the left arc separation plate and the right arc separation plate is both provided with a boss, and the boss is clamped into the side groove.
[0010] Beneficial effects
[0011] The circuit breaker arc-extinguishing chamber arc separation mechanism provided by the embodiment of the utility model has at least one of the following technical effects:
[0012] The utility model discloses can through above -mentioned technical scheme, through being equipped with arc separation mechanism, through left arc separation board, right arc separation board and middle arc separation board, can carry out arc separation to the left and right sides, bottom and front side of arc guide hole, avoid the electric arc from the left and right sides, bottom and front side of arc guide hole and free, thereby strengthen the arc separation ability of arc-extinguishing chamber, improved the security of circuit breaker, through left magnet and right magnet can quickly introduce the electric arc to the arc guide hole, thereby accelerate the arc-extinguishing efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 It is the whole explosion structure schematic diagram of the utility model;
[0014] Fig. 2 It is the right view explosion structure schematic diagram of the utility model arc separation mechanism;
[0015] Fig. 3 It is the left view explosion structure schematic diagram of the utility model arc separation mechanism.
[0016] The correspondence between the various figure marks and component names in the drawing is as follows:
[0017] 1, arc-extinguishing chamber body;2, arc separation mechanism;3, arc guide hole;4, moving contact;5, static contact;6, left arc separation board;7, right arc separation board;8, middle arc separation board;9, left mounting groove;10, right mounting groove;11, left magnet;12, right magnet;13, connecting plate;14, side groove;15, boss;16, jack. DETAILED DESCRIPTION
[0018] The technical solutions of the utility model will be described below in conjunction with the embodiments, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.
[0019] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms such as "upper", "lower", "left", "right" is the orientation or position relationship shown based on the drawing, only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.
[0020] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term "arrange", "install", "link", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication.For ordinary skilled person in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.
[0021] As Figs. 1-3 As shown in a preferred embodiment of the utility model, a structure diagram of arc separation mechanism of circuit breaker arc-extinguishing chamber is shown;
[0022] In the embodiment, including arc-extinguishing chamber body 1, arc separation mechanism 2, arc-extinguishing chamber body 1 side is equipped with arc entrance 3, and arc entrance 3 top is equipped with moving contact 4 and static contact 5, and arc separation mechanism 2 includes left arc separation plate 6 and right arc separation plate 7 and middle arc separation plate 8, and left arc separation plate 6 and right arc separation plate 7 are symmetrically arranged, and left arc separation plate 6 and right arc separation plate 7 are respectively clamped and embedded in the left and right sides of arc entrance 3, and middle arc separation plate 8 is arranged at the front side of arc entrance 3, and the side face of left arc separation plate 6 away from arc entrance 3 is provided with left mounting groove 9, and the side face of right arc separation plate 7 away from arc entrance 3 is provided with right mounting groove 10, and left magnet 11 is clamped and embedded in left mounting groove 9, and right magnet 12 is clamped and embedded in right mounting groove 10, and by left arc separation plate 6, right arc separation plate 7 and middle arc separation plate 8, the left and right sides, bottom and front side of arc entrance 3 can be arc separated, to avoid arc from the left and right sides, bottom and front side of arc entrance 3 to escape, thereby enhancing the arc separation capability of arc-extinguishing chamber body 1, and improving the safety of circuit breaker, and by left magnet 11 and right magnet 12, arc can be quickly introduced into arc entrance 3, thereby accelerating arc-extinguishing efficiency.
[0023] In the embodiment, left magnet 11 and right magnet 12 are both made of permanent magnet.The magnetic field generated by left magnet 11 and right magnet 12 can guide and control arc.When moving contact 4 and static contact 5 are disconnected, arc will be generated.The magnetic field generated by left magnet 11 and right magnet 12 can guide arc to move towards arc entrance 3, thereby guiding arc into arc-extinguishing chamber body 1, to achieve the purpose of extinguishing arc faster.
[0024] In the embodiment, the bottom of middle arc separation strip 8 is provided with connecting plate 13, both sides of connecting plate 13 are provided with side groove 14, the bottom of left arc separation plate 6 and right arc separation plate 7 is provided with boss 15, and boss 15 is clamped into side groove 14, and the structure realizes the connection between left arc separation plate 6, right arc separation plate 7 and middle arc separation plate 8.
[0025] The arc separation mechanism of the circuit breaker arc extinguishing chamber is of a common mechanical mode in installation mode, connection mode or setting mode, and can be implemented as long as the beneficial effects are achieved.
[0026] The technologies not described in detail in the utility model are known technologies, and the contents represented in the drawings are part of the specification.
[0027] The above content is a further detailed description of the utility model in combination with the specific embodiments, and cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be considered as belonging to the protection range determined by the claims submitted by the utility model.
Claims
1. An arc-isolating mechanism for the arc-extinguishing chamber of a circuit breaker, characterized in that: The utility model relates to an arc extinguishing chamber, including arc extinguishing chamber body (1), arc separation mechanism (2), one side of arc extinguishing chamber body (1) is equipped with arc entrance (3), the top of arc entrance (3) is equipped with movable contact (4) with static contact (5), arc separation mechanism (2) includes left arc separation board (6) with right arc separation board (7) and middle arc separation board (8), left arc separation board (6) with right arc separation board (7) are arranged respectively in the left and right sides of arc entrance (3), and middle arc separation board (8) is arranged in the front side of arc entrance (3), the side face of left arc separation board (6) away from arc entrance (3) is equipped with left installation groove (9), the side face of right arc separation board (7) away from arc entrance (3) is equipped with right installation groove (10), left installation groove (9) is equipped with left magnet (11) in, right installation groove (10) is equipped with right magnet (12) in.
2. The arc chute of claim 1, wherein: The left magnet (11) and the right magnet (12) are both made of permanent magnet.
3. The arc chute of claim 1, wherein: The bottom of the middle arc separation board (8) is provided with a connecting plate (13), both sides of the connecting plate (13) are provided with a side groove (14), the bottom of the left arc separation board (6) and the right arc separation board (7) are provided with a boss (15), and the boss (15) is clamped into the side groove (14).