Contact seat assembly with arc extinguishing groove reinforcing ring structure

Abstract

The utility model discloses a contact seat assembly with an arc extinguishing groove reinforcing ring structure, which is used for solving the problem that arc extinguishing grooves of a contact seat deform under the action of inertia, and the phenomenon that the arc extinguishing grooves are combined into circles is generated. According to the technical scheme, the contact seat assembly with the arc extinguishing groove reinforcing ring structure comprises a contact seat and a reinforcing ring, arc extinguishing grooves which are evenly distributed in the circumferential direction at intervals are formed in the side wall of the contact seat, the reinforcing ring is arranged on the side wall of the contact seat, and the arc extinguishing grooves are arranged in the reinforcing ring. The side wall of the reinforcing ring is provided with an avoiding groove which extends along the same direction with the arc extinguishing groove of the contact seat and is not narrower than the arc extinguishing groove. Each arc extinguishing groove of the contact base is independently supported through the reinforcing ring, it is ensured that each arc extinguishing groove does not deform, and meanwhile the shunting effect of the reinforcing ring on a magnetic field is reduced through the formed receding groove.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of vacuum arc extinguishing chamber, and specifically relates to a contact seat assembly with arc-extinguishing groove reinforcing ring structure. BACKGROUND

[0002] The vacuum arc extinguishing chamber is a core component of a vacuum switch, is mainly applied to a three-phase alternating current distribution system, is an electric vacuum device for realizing the on and off functions of a power circuit by a pair of contacts (electrodes) sealed in a vacuum by a porcelain shell, and plays a role of protecting and controlling a circuit. When breaking a large current, a magnetic field needs to be introduced between the contacts to reduce the arc capacity and the contact electric ablation speed. The contact seat assembly structure is a structure commonly used for introducing a magnetic field in the current vacuum arc extinguishing chamber, the current path is changed by arranging an arc-extinguishing groove on the oxygen-free copper contact seat, a longitudinal magnetic field is formed, the longer the arc-extinguishing groove, the stronger the magnetic field generated, the arc is kept in a diffusion state all the time, and the breaking capacity is improved.

[0003] In order to ensure the overall strength of the contact seat assembly, the current method is to increase a reinforcing rib in the middle of the contact seat assembly to support it, so that the contact seat is prevented from being deformed. However, under the conditions of large switch contact pressure and fast closing speed, the arc-extinguishing groove of the contact seat will be deformed due to inertia and will be wound, the current path on the contact seat is changed, the magnetic field formed is greatly weakened, and the breaking fails. The current method of increasing a reinforcing rib in the middle cannot avoid this disadvantage. SUMMARY

[0004] In order to solve the above problems, the utility model provides a contact seat assembly with arc-extinguishing groove reinforcing ring structure, which aims at overcoming the deformation of the arc-extinguishing groove of the contact seat under the action of inertia, avoiding the winding of the arc-extinguishing groove, and improving the impact resistance of the contact seat and the reliability of the large current breaking of the vacuum arc extinguishing chamber.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a contact seat assembly with arc-extinguishing groove reinforcing ring structure, which comprises a contact seat and a reinforcing ring, arc-extinguishing grooves are arranged on the side wall of the contact seat and are uniformly distributed along the circumference, the reinforcing ring is arranged on the side wall of the contact seat, and an avoiding groove is arranged on the side wall of the reinforcing ring and extends in the same direction as the arc-extinguishing grooves of the contact seat and is not narrower than the arc-extinguishing grooves.

[0006] The reinforcing ring is arranged inside the side wall of the contact seat.

[0007] The reinforcing ring is 1-2mm away from the upper end surface of the contact seat, and the height of the reinforcing ring is 11-12mm.

[0008] The reinforcing ring is arranged outside the contact seat.

[0009] The bottom of the reinforcing ring is connected with a support plate with a through hole arranged in the middle, and the reinforcing ring and the support plate are integrally formed.

[0010] The reinforcing ring is fixed with the contact seat by welding.

[0011] The utility model discloses the beneficial effect has: through being set up the avoiding slot on the reinforcing ring along the arc extinguishing groove slotting direction, reduces the influence of reinforcing ring shunt to the magnetic field, and simultaneously, reinforcing ring and contact seat fixed connection and can set up inside or outside the side wall of contact seat, and the single support of reinforcing ring to each petal arc extinguishing groove of contact seat, ensure that each petal arc extinguishing groove does not occur deformation. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described below in combination with the drawings;

[0013] Fig. 1 It is the schematic diagram of the inside fixation of the reinforcing ring of the utility model;

[0014] Fig. 2 It is the sectional view of the inside fixation of the reinforcing ring of the utility model;

[0015] Fig. 3 It is the schematic diagram of the outside fixation of the reinforcing ring of the utility model;

[0016] Fig. 4 It is the sectional view of the outside fixation of the reinforcing ring of the utility model;

[0017] Fig. 5 It is the schematic diagram of the reinforcing ring of the utility model;

[0018] In the drawing: 1, contact seat;2, reinforcing ring;3, arc extinguishing groove;4, avoiding slot;5, support plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment.

[0020] The technical scheme of the utility model will be described in detail below with specific embodiments. The following several specific embodiments can be combined or replaced according to actual situation, and the same or similar concepts or processes may not be described in some embodiments. EMBODIMENT

[0021] As Figs. 1-2As shown, this utility model provides a contact seat assembly with an arc-extinguishing groove and a reinforcing ring structure, including a contact seat 1 and a reinforcing ring 2. The side wall of the contact seat 1 is provided with arc-extinguishing grooves 3 evenly distributed along the circumference. The reinforcing ring 2 is disposed on the side wall of the contact seat 1. An avoidance groove 4 is opened on the side wall of the reinforcing ring 2, which extends in the same direction as the arc-extinguishing grooves 3 of the contact 1 and is not narrower than the arc-extinguishing grooves 3.

[0022] By opening a clearance groove 4 on the reinforcing ring 2 along the slotting direction of the arc-extinguishing groove 3, the influence of the current diversion of the reinforcing ring 2 on the magnetic field is reduced; at the same time, the reinforcing ring 2 is fixedly connected to the contact seat 1, and the reinforcing ring 2 provides individual support for each arc-extinguishing groove 3 of the contact seat 1 to ensure that each arc-extinguishing groove 3 will not deform.

[0023] Specifically, the reinforcing ring 2 is disposed inside the side wall of the contact seat 1, the reinforcing ring 2 is 2mm away from the upper end face of the contact seat 1, the height of the reinforcing ring 2 is 11.5mm, and the reinforcing ring 2 is fixed to the contact seat 1 by welding. Example

[0024] like Figs. 3-4 As shown, the reinforcing ring 2 is disposed outside the contact seat 1, and the bottom of the reinforcing ring 2 is connected to a support plate 5 with a through hole in the middle. The reinforcing ring 2 and the support plate 5 are integrally formed. By placing the reinforcing ring 2 on the outside, it is ensured that the clearance groove 4 on the reinforcing ring 2 is not closed, further reducing the shunting effect of the reinforcing ring 2 on the magnetic field.

[0025] In addition to the preferred embodiments described above, there are other embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection claimed by this utility model.

Claims

1. A contact seat assembly having an arc chute reinforcement ring structure, characterized by, The contact seat (1) and the reinforcing ring (2) are included, arc extinguishing grooves (3) are arranged on the side wall of the contact seat (1) and are uniformly distributed in the circumferential direction, the reinforcing ring (2) is arranged on the side wall of the contact seat (1), and an avoiding groove (4) extending in the same direction as the arc extinguishing groove (3) of the contact seat (1) and not narrower than the arc extinguishing groove (3) is formed on the side wall of the reinforcing ring (2).

2. A contact seat assembly having an arc chute reinforced ring structure according to claim 1, wherein, The reinforcing ring (2) is arranged inside the side wall of the contact seat (1).

3. A contact seat assembly having an arc chute reinforcing ring structure according to claim 2, wherein The reinforcing ring (2) is 1-2 mm away from the upper end surface of the contact seat (1), and the height of the reinforcing ring (2) is 11-12 mm.

4. A contact seat assembly having a reinforced arc chute ring structure according to claim 1, wherein, The reinforcing ring (2) is arranged outside the contact seat (1).

5. A contact seat assembly having an arc chute reinforcing ring structure according to claim 4, wherein The bottom of the reinforcing ring (2) is connected with a support plate (5) with a through hole arranged in the middle, and the reinforcing ring (2) and the support plate (5) are integrally formed.

6. A contact seat assembly having a reinforced arc chute ring structure according to claim 1, wherein, The reinforcing ring (2) is fixed by welding with the contact seat (1).

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