Contactor contact system arc extinguishing device

Abstract

The utility model discloses a contactor contact system arc extinguishing device, comprising an arc extinguishing member structure, the arc extinguishing member structure comprises an L1 arc extinguishing member, a first L2-T2 arc extinguishing member, a second L2-T2 arc extinguishing member, an L3 arc extinguishing member, a T1 arc extinguishing member, and a T3 arc extinguishing member; the wire inlet structure comprises a wire inlet shell, an arc extinguishing cavity L1, an arc extinguishing cavity L2 and an arc extinguishing cavity L3, and the arc extinguishing cavity L1, the arc extinguishing cavity L2 and the arc extinguishing cavity L3 are formed in the wire inlet shell; and the wire outlet structure comprises an arranged wire outlet shell, and an arc extinguishing cavity T1, an arc extinguishing cavity T2 and an arc extinguishing cavity T3 which are formed in the wire outlet shell. According to the utility model, through the mutual cooperation of the arc extinguishing member structure, the wire inlet structure and the wire outlet structure, on the premise of not changing the part structure of a small-current AC contactor with the current specification of 18A or below, the arc extinguishing member is additionally hung in the corresponding arc extinguishing cavity of the housing, so that the arc generated when a contact system of the contactor is disconnected is cooled in an accelerated manner, and the service life of the contactor is prolonged. The breaking capacity of the small-current contactor is improved and the service life of the contactor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of contactor arc extinguishing technology, specifically to an arc extinguishing device for a contactor contact system. Background Technology

[0002] Contactors are mainly used to connect or disconnect circuits and electrical equipment. Specifically, the connection or disconnection of the load is achieved by the closing or opening of the moving and stationary contacts in the contactor contact system.

[0003] When the contactor contact system is disconnected under load, a very strong electric arc will be generated between the moving contact and the stationary contact, causing the temperature around the contact system to rise rapidly. This accelerates the burning of the silver contacts and may even burn out the insulating parts, causing a phase-to-phase short circuit in the contactor and potentially leading to fires, explosions, or other dangers in the electrical equipment.

[0004] Generally, contactors used in AC-3380V circuits with a rated current of less than 18A do not have a separate arc-extinguishing device. They rely solely on the arc-extinguishing chamber of the contactor's insulating housing for natural air cooling to extinguish the arc. When such contactors are used in high-voltage or heavy-load applications, such as AC-3690V, they are prone to insufficient arc-extinguishing capability, which can cause the silver contacts of the contacts to burn out, or even burn out the phase-to-phase insulation of the housing, resulting in phase-to-phase short circuits and burning out electrical equipment, causing dangers such as fire and explosion. Currently, the solution to this situation is generally to recommend using contactors with a higher current frame rating, but such contactors are expensive and bulky, resulting in a waste of resources. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an arc-extinguishing device for a contactor contact system. By cooperating with the arc-extinguishing component structure, the inlet structure and the outlet structure, without changing the component structure of small current AC contactors with a current specification of 18A and below, it is installed and hung in the corresponding arc-extinguishing cavity of the housing to accelerate the cooling of the arc when the contactor contact system is disconnected, improve the breaking capacity of the small current contactor, and increase the service life of the contactor.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: an arc-extinguishing device for a contactor contact system, comprising:

[0007] An arc-extinguishing component structure, comprising an L1 arc-extinguishing component, a first L2-T2 arc-extinguishing component, a second L2-T2 arc-extinguishing component, an L3 arc-extinguishing component, a T1 arc-extinguishing component, and a T3 arc-extinguishing component;

[0008] The incoming line structure includes an incoming line housing, and L1, L2 and L3 arc-extinguishing cavities formed on the incoming line housing.

[0009] The outgoing structure includes an outgoing housing, and T1, T2 and T3 arc extinguishing cavities formed on the outgoing housing.

[0010] As a preferred embodiment of the contactor contact system arc extinguishing device of this utility model, the L1 arc extinguishing component, the first L2-T2 arc extinguishing component, and the L3 arc extinguishing component are respectively clamped and fixed to the L1 arc extinguishing cavity, the L2 arc extinguishing cavity, and the L3 arc extinguishing cavity.

[0011] In a preferred embodiment of the contactor contact system arc extinguishing device described in this utility model, the second L2-T2 arc extinguishing component, the T1 arc extinguishing component, and the T3 arc extinguishing component are respectively clamped and fixed to the T1 arc extinguishing cavity, the T2 arc extinguishing cavity, and the T3 arc extinguishing cavity.

[0012] As a preferred embodiment of the arc extinguishing device for a contactor contact system according to this utility model, the L1 arc extinguishing component includes a positioning rib, a backstop, and a hook.

[0013] As a preferred embodiment of the contactor contact system arc extinguishing device described in this utility model, the L1 arc extinguishing cavity includes a positioning surface, a clamping surface, a mounting hole, and a mounting rib.

[0014] In a preferred embodiment of the contactor contact system arc extinguishing device described in this utility model, the positioning rib slides inward along the positioning surface into the L1 arc extinguishing cavity, and the hook extends into the hooking hole.

[0015] As a preferred embodiment of the contactor contact system arc extinguishing device described in this utility model, the hook is bent at 90 degrees and hooked to the connecting rib, the anti-reverse buckle is interference-fitted with the clamping surface, and the L1 arc extinguishing component is firmly hooked to the L1 arc extinguishing cavity.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] By coordinating the arc-extinguishing structure, the inlet structure, and the outlet structure, without altering the component structure of small current AC contactors with a current specification of 18A and below, an arc-extinguishing chamber is added and attached to the corresponding housing to accelerate the cooling of the arc when the contactor contact system is disconnected, thereby improving the breaking capacity of the small current contactor and increasing its service life.

[0018] When the 9A-18A model contactor is used in a circuit with an A rating less than 18A or in a lightly loaded 18A circuit, no arc-extinguishing device is required, resulting in low product cost.

[0019] When the 9A-18A model contactor is used in an 18A heavy-load circuit, an arc-extinguishing device is added. The L1 arc-extinguishing component, the first L2-T2 arc-extinguishing component, and the L3 arc-extinguishing component are respectively clamped and fixed to the L1, L2, and L3 arc-extinguishing cavities. The second L2-T2 arc-extinguishing component, the T1 arc-extinguishing component, and the T3 arc-extinguishing component are respectively clamped and fixed to the T1, T2, and T3 arc-extinguishing cavities. Taking the L1 arc-extinguishing component as an example, during assembly, the positioning rib slides inward along the positioning surface into the L1 arc-extinguishing cavity, the hook extends into the hooking hole, and the hook is bent 90 degrees to hook the hook with the hooking rib. At the same time, the anti-reverse buckle and the clamping surface are interference-fitted, and the L1 arc-extinguishing component is firmly hooked to the L1 arc-extinguishing cavity. The connection principle of the other arc-extinguishing components is the same. In this way, the addition can be realized to accelerate the cooling of the arc when the contactor contact system is disconnected, improve the breaking capacity of the small current contactor, and increase the service life of the contactor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 This is a structural diagram of the arc-extinguishing component of this utility model;

[0022] Figure 2 This is a structural diagram of the inlet housing of this utility model;

[0023] Figure 3 This is a structural diagram of the cable outlet housing of this utility model;

[0024] Figure 4 This is a structural diagram showing the position of the positioning ribs in this utility model;

[0025] Figure 5 This is a structural diagram of the positioning surface of this utility model.

[0026] In the diagram: 1. L1 arc extinguishing component; 2-1. First L2-T2 arc extinguishing component; 2-2. Second L2-T2 arc extinguishing component; 3. L3 arc extinguishing component; 4. T1 arc extinguishing component; 5. T3 arc extinguishing component; 6. Inlet housing; 7. Outlet housing; 601. L1 arc extinguishing cavity; 602. L2 arc extinguishing cavity; 603. L3 arc extinguishing cavity; 701. T1 arc extinguishing cavity; 702. T2 arc extinguishing cavity; 703. T3 arc extinguishing cavity; 101. Positioning rib; 102. Anti-reverse package; 103. Hook; 6011. Positioning surface; 6012. Clamping surface; 6013. Hanging hole; 6014. Hanging rib. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0031] This utility model provides an arc-extinguishing device for a contactor contact system. By cooperating with the arc-extinguishing component structure, the inlet structure, and the outlet structure, without changing the component structure of small current AC contactors with a current specification of 18A and below, it is installed and hung in the corresponding arc-extinguishing cavity of the housing to accelerate the cooling of the electric arc when the contactor contact system is disconnected, improve the breaking capacity of the small current contactor, and increase the service life of the contactor.

[0032] Figures 1-5 The diagram shown is an overall structural schematic of an embodiment of the arc-extinguishing device for a contactor contact system according to this utility model. Please refer to [link / reference]. Figure 1-5 The main structure of this embodiment includes: an arc-extinguishing structure, an inlet structure, and an outlet structure.

[0033] The arc extinguishing device structure is used in conjunction with the incoming line structure and the outgoing line structure. Specifically, the arc extinguishing device structure includes an L1 arc extinguishing device 1, a first L2-T2 arc extinguishing device 2-1, a second L2-T2 arc extinguishing device 2-2, an L3 arc extinguishing device 3, a T1 arc extinguishing device 4, and a T3 arc extinguishing device 5.

[0034] In practical use, the L1 arc extinguishing component 1, the first L2-T2 arc extinguishing component 2-1, the second L2-T2 arc extinguishing component 2-2, the L3 arc extinguishing component 3, the T1 arc extinguishing component 4, and the T3 arc extinguishing component 5 are installed in accordance with the incoming line structure and the outgoing line structure.

[0035] The incoming line structure works in conjunction with the outgoing line structure to complete the arc extinguishing installation. Specifically, the incoming line structure includes an incoming line housing 6 and L1 arc extinguishing cavity 601, L2 arc extinguishing cavity 602 and L3 arc extinguishing cavity 603 formed on the incoming line housing 6; the outgoing line structure includes an outgoing line housing 7 and T1 arc extinguishing cavity 701, T2 arc extinguishing cavity 702 and T3 arc extinguishing cavity 703 formed on the outgoing line housing 7.

[0036] In practical use, the L1 arc-extinguishing component 1, the first L2-T2 arc-extinguishing component 2-1, and the L3 arc-extinguishing component 3 are respectively snapped and fixed to the L1 arc-extinguishing cavity 601, the L2 arc-extinguishing cavity 602, and the L3 arc-extinguishing cavity 603. The second L2-T2 arc-extinguishing component 2-2, the T1 arc-extinguishing component 4, and the T3 arc-extinguishing component 5 are respectively snapped and fixed to the T1 arc-extinguishing cavity 701, the T2 arc-extinguishing cavity 702, and the T3 arc-extinguishing cavity 703. Taking the specific connection of the L1 arc-extinguishing component 1 as an example, during assembly, the positioning rib 101 is aligned with the positioning surface 601. 1. Slide it inward into the L1 arc-extinguishing cavity 601. The hook 103 extends into the hooking hole 6013. Bend the hook 103 90 degrees so that the hook 103 is hooked with the hooking rib 6014. At the same time, the anti-reverse buckle 102 and the clamping surface 6012 are interference-fitted. The L1 arc-extinguishing component 1 is firmly hooked with the L1 arc-extinguishing cavity 601. The connection principle of other arc-extinguishing components is the same. In this way, the addition can be realized to accelerate the cooling of the arc when the contactor contact system is disconnected, improve the breaking capacity of the small current contactor, and increase the service life of the contactor.

[0037] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An arc-extinguishing device for a contactor contact system, characterized in that, include: The arc extinguishing component structure includes an L1 arc extinguishing component (1), a first L2-T2 arc extinguishing component (2-1), a second L2-T2 arc extinguishing component (2-2), an L3 arc extinguishing component (3), a T1 arc extinguishing component (4), and a T3 arc extinguishing component (5). The incoming line structure includes an incoming line housing (6), an L1 arc-extinguishing cavity (601), an L2 arc-extinguishing cavity (602) and an L3 arc-extinguishing cavity (603) formed on the incoming line housing (6). The outgoing structure includes an outgoing housing (7), a T1 arc-extinguishing cavity (701), a T2 arc-extinguishing cavity (702), and a T3 arc-extinguishing cavity (703) formed on the outgoing housing (7).

2. The arc-extinguishing device for a contactor contact system according to claim 1, characterized in that, The L1 arc extinguishing component (1), the first L2-T2 arc extinguishing component (2-1), and the L3 arc extinguishing component (3) are respectively clamped and fixed to the L1 arc extinguishing cavity (601), the L2 arc extinguishing cavity (602), and the L3 arc extinguishing cavity (603).

3. The arc-extinguishing device for a contactor contact system according to claim 2, characterized in that, The second L2-T2 arc extinguishing component (2-2), the T1 arc extinguishing component (4), and the T3 arc extinguishing component (5) are respectively clamped and fixed to the T1 arc extinguishing cavity (701), the T2 arc extinguishing cavity (702), and the T3 arc extinguishing cavity (703).

4. The arc-extinguishing device for a contactor contact system according to claim 3, characterized in that, The L1 arc extinguishing component (1) includes a positioning rib (101), a backstop (102), and a hook (103).

5. The arc-extinguishing device for a contactor contact system according to claim 4, characterized in that, The L1 arc extinguishing cavity (601) includes a positioning surface (6011), a clamping surface (6012), a hanging hole (6013), and a hanging rib (6014).

6. The arc-extinguishing device for a contactor contact system according to claim 5, characterized in that, The positioning rib (101) slides inward along the positioning surface (6011) into the L1 arc extinguishing cavity (601), and the hook (103) extends into the hook hole (6013).

7. The arc-extinguishing device for a contactor contact system according to claim 6, characterized in that, The hook (103) is bent at 90 degrees and hooked to the connecting rib (6014). The anti-reverse package (102) is interference-fitted with the clamping surface (6012). The L1 arc extinguishing component (1) is firmly hooked to the L1 arc extinguishing cavity (601).

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