Anti-breakdown contactor

Abstract

The utility model relates to the technical field of contactors, in particular to an anti-breakdown contactor which comprises a shell, a shell cover, a static contact and a moving contact, the shell cover can be connected with the shell in a clamped mode, the static contact is installed on the inner wall of the shell, the moving contact is installed on the inner wall of the shell cover, the moving contact can abut against the side wall of the static contact, and the shell cover can be connected with the shell in a clamped mode. Arc extinguishing sheets are installed on the two sides of the static contact, insulating clamping strips are fixed to the two sides of the shell, clamping grooves are formed in the side walls of the insulating clamping strips, the arc extinguishing sheets are connected with the insulating clamping strips in a clamped mode, the side walls of the arc extinguishing sheets abut against the inner walls of the clamping grooves, an electromagnetic part is arranged on the inner wall of the shell cover, and the electromagnetic part is arranged on the inner wall of the shell cover. And the electromagnetic piece is used for controlling the action of the moving contact. The installation process of the arc extinguishing sheet is simplified, and the operation of a worker is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of contactors, and more particularly to an anti-breakdown contactor. Background Art

[0002] In the power system, contactors are often used as electromagnetic switches for remotely controlling the on / off of circuits. When the contacts of the contactor are disconnected, an arc will form between the contacts, causing serious damage to the contacts and shortening the service life of the contactor.

[0003] Currently, a contactor includes a housing, arc extinguishing grid plates, and a conducting mechanism. The conducting mechanism is installed on the inner wall of the housing. When the conducting mechanism works, the circuit of the contactor is connected. The arc extinguishing grid plates are installed on the inner wall of the housing near the conducting mechanism through several bolts. When the conducting mechanism works and the circuit is connected, an arc is generated in the conducting mechanism. The arc enters the arc extinguishing grid plates and is divided into multiple small segments. The setting of the arc extinguishing grid plates accelerates the extinction of the arc.

[0004] The installation process of the above-mentioned arc extinguishing grid plates is complex, and the operations of installing and disassembling the arc extinguishing grid plates are cumbersome, which needs to be improved. Utility Model Content

[0005] In order to simplify the installation process of the arc extinguishing plates and facilitate the operation of the staff, the present application provides an anti-breakdown contactor.

[0006] An anti-breakdown contactor provided by the present application adopts the following technical solutions:

[0007] An anti-breakdown contactor includes a housing, a housing cover, a static contact, and a moving contact. The housing cover is detachably connected to the housing. The static contact is installed on the inner wall of the housing, and the moving contact is installed on the inner wall of the housing cover. The moving contact can abut against the side wall of the static contact. Arc extinguishing plates are installed on both sides of the static contact. Insulating clamping strips are fixed on both sides of the housing. A clamping groove is formed on the side wall of the insulating clamping strip. The arc extinguishing plates are clamped with the insulating clamping strips, and the side wall of the arc extinguishing plate abuts against the inner wall of the clamping groove. An electromagnetic component is arranged on the inner wall of the housing cover, and the electromagnetic component is used to control the movement of the moving contact.

[0008] By adopting the above technical solutions, when using the anti-breakdown contactor, the electromagnetic component drives the moving contact to approach the static contact. Subsequently, the side wall of the moving contact abuts against the side wall of the static contact. At this time, the circuit of the anti-breakdown contactor is connected, and an arc is generated between the moving contact and the static contact. The arc is extinguished under the blocking action of the arc extinguishing plates, and then the arc is extinguished under the action of the arc extinguishing cover. When the arc extinguishing plates cannot work properly, the staff removes the old arc extinguishing plates and then installs the new arc extinguishing plates into the clamping grooves. At this time, the side wall of the arc extinguishing plate abuts against the side wall of the insulating clamping strip, and the side wall of the arc extinguishing plate abuts against the inner wall of the clamping groove. This setting simplifies the installation process of the arc extinguishing plates and facilitates the operation of the staff.

[0009] Optionally, an arc extinguishing cover is fixed to one end of the housing away from the housing cover, and the side wall of the arc extinguishing cover is close to the side wall of the static contact.

[0010] By adopting the above technical solution, when the moving contact abuts against the side wall of the static contact, an arc is generated between the moving contact and the static contact. Subsequently, under the arc extinguishing effect of the arc extinguishing cover, the arc is accelerated to extinguish, and the setting of the arc extinguishing cover reduces the influence of the arc on the housing.

[0011] Optionally, a clamping block is fixed to the inner wall of the housing cover, and a clamping frame is fixed to the inner wall of the housing. The clamping block is clamped with the clamping frame.

[0012] By adopting the above technical solution, when installing the anti-breakdown contactor, the housing cover is installed by clamping the clamping block and the clamping frame, so that the housing cover is fixed to the side wall of the housing. This setting increases the stability of the anti-breakdown contactor during operation.

[0013] Optionally, two static contacts are installed, and the side walls of both static contacts can abut against the side wall of the moving contact.

[0014] By adopting the above technical solution, when the circuit of the anti-breakdown contactor is turned on, the side wall of the moving contact abuts against the side walls of the two static contacts respectively. When any one of the static contacts fails to work properly, the other static contact still works normally. The setting of the two static contacts provides insurance for the operation of the anti-breakdown contactor and reduces the influence of the damage of the static contact on the working state of the anti-breakdown contactor.

[0015] Optionally, the side wall of the static contact close to the moving contact is trapezoidally arranged, and the side wall of the static contact abuts against the side wall of the arc extinguishing piece.

[0016] By adopting the above technical solution, the static contact and the insulating strip jointly clamp the arc extinguishing piece, increasing the stability of the arc extinguishing piece fixed on the side wall of the insulating strip.

[0017] Optionally, a gas guide pipe is fixed to the side wall of the housing away from the housing cover, and the pipeline of the gas guide pipe is communicated with one side of the housing away from the gas guide pipe.

[0018] By adopting the above technical solution, when an arc is generated in the anti-breakdown contactor, the air in the gap between the housing and the housing cover is heated and expanded, and then the heated and expanded gas flows out of the gap between the housing and the housing cover through the gas guide pipe. The setting of the gas guide pipe makes the working environment of the anti-breakdown contactor safer.

[0019] Optionally, a retaining strip is fixed to the inner wall of the housing, the retaining strip is located below the moving contact, and the height of the retaining strip is lower than the height of the static contact.

[0020] By adopting the above technical solution, when the moving contact abuts against the static contact under the action of the electromagnetic component, the moving contact slides towards the static contact, and then the side wall of the moving contact abuts against the side wall of the blocking strip, preventing the side wall of the moving contact from abutting against the inner wall of the housing. This setting provides insurance for the action process of the moving contact and reduces the possibility of damage to the anti-breakdown contactor during operation.

[0021] Optionally, a plurality of convex blocks are fixed on the side wall of the arc extinguishing cover, and the convex blocks are located at one end of the housing away from the housing cover.

[0022] By adopting the above technical solution, when installing the anti-breakdown contactor, the staff grabs and places the anti-breakdown contactor through the convex blocks, which facilitates the operation of the staff.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When installing the anti-breakdown contactor, the staff clamps the arc extinguishing piece on the side wall of the insulating clamping strip. At this time, the arc extinguishing piece abuts against the inner wall of the clamping groove, and then the housing cover is covered on the side wall of the housing. When the moving contact abuts against the static contact, an arc is generated between the moving contact and the static contact, and the arc is extinguished under the arc extinguishing action of the arc extinguishing piece. When the arc extinguishing piece needs to be replaced, the staff takes out the arc extinguishing piece and clamps a new arc extinguishing piece. This setting can simplify the installation process of the arc extinguishing piece and facilitate the operation of the staff.

[0025] 2. When the side wall of the moving contact abuts against the side wall of the static contact, the side walls of both static contacts abut against the side wall of the moving contact. When any one of the static contacts is damaged, the other static contact still works normally and the circuit is connected. This setting reduces the influence of the damage of the static contact on the anti-breakdown contactor. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure of an anti-breakdown contactor in an embodiment of the present application.

[0027] Figure 2 is a cross-sectional view of the anti-breakdown contactor in an embodiment of the present application.

[0028] Figure 3 is a schematic diagram of the structure of the housing and the housing cover in an embodiment of the present application.

[0029] Reference numerals: 1, housing; 2, housing cover; 3, static contact; 4, moving contact; 5, arc extinguishing piece; 6, insulating clamping strip; 7, clamping groove; 8, electromagnetic component; 9, arc extinguishing cover; 10, clamping block; 11, clamping frame; 12, air guide pipe; 13, blocking strip; 14, convex block. Detailed Embodiment

[0030] The following will be further described in detail with reference to the attached Figures 1-3 to further illustrate the present application.

[0031] An embodiment of the present application discloses an anti-breakdown contactor.

[0032] Referring to Figure 1 , an anti-breakdown contactor includes a housing 1, an arc extinguishing cover 9, a housing cover 2, and a static contact 3. The housing cover 2 is disposed on the side wall of the housing 1, the arc extinguishing cover 9 is fixed on one side of the housing 1 away from the housing cover 2, and the static contact 3 is installed on one side of the housing 1 away from the housing cover 2. In the embodiment of the present application, two static contacts 3 are preferably provided. A bolt is fixed at one end of the static contact 3 away from the housing cover 2, and a gas guide pipe 12 is fixed on the side wall of the housing 1. The arrangement of the gas guide pipe 12 can discharge the air between the housing 1 and the housing cover 2, increasing the safety of the anti-breakdown contactor.

[0033] Referring to Figure 2 , an electromagnetic member 8 is provided on the inner wall of the housing cover 2. The electromagnetic member 8 is preferably an electromagnet. A moving contact 4 is fixed on the side wall of the armature of the electromagnet. The position of the moving contact 4 corresponds to the position of the static contact 3. A stop bar 13 is fixed on the inner wall of the housing 1, and the stop bar 13 is located between the two static contacts 3. When the anti-breakdown contactor is working, the electromagnetic member 8 drives the moving contact 4 to slide towards the static contact 3. Subsequently, the side wall of the moving contact 4 abuts against the side wall of the static contact 3, and the circuit of the anti-breakdown contactor is connected. The arrangement of the stop bar 13 limits the sliding distance of the moving contact 4, reducing the possibility of the moving contact 4 directly contacting the housing 1.

[0034] A plurality of insulating clamping strips 6 are fixed on the inner wall of the housing 1. A clamping groove 7 is formed on the side wall of the insulating clamping strip 6. An arc extinguishing piece 5 is clamped on the side wall of the insulating clamping strip 6. In the embodiment of the present application, two insulating clamping strips 6 are preferably provided, and the two insulating clamping strips 6 are respectively close to the two static contacts 3. One end of the static contact 3 close to the housing cover 2 is trapezoidally arranged. The side wall of the arc extinguishing piece 5 abuts against the inner wall of the clamping groove 7, and the side wall of the arc extinguishing piece 5 away from the insulating clamping strip 6 abuts against the side wall of the static contact 3. The static contact 3 and the insulating clamping strip 6 clamp the arc extinguishing piece 5, and the arc extinguishing piece 5 is fixed on the side wall of the insulating clamping strip 6. When the circuit of the anti-breakdown contactor is connected, the arc extinguishing piece 5 blocks the arc from approaching the housing 1, and then the arc is extinguished under the action of the arc extinguishing cover 9. The arrangement of the arc extinguishing piece 5 reduces the influence of the arc on the housing 1.

[0035] Referring to Figure 3 , a clamping frame 11 is fixed on the inner wall of the housing 1, and a clamping block 10 is fixed on the inner wall of the housing cover 2. The clamping block 10 and the clamping frame 11 can be clamped and fixed. A plurality of clamping blocks are fixed on the side wall of the arc extinguishing cover 9. In the embodiment of the present application, two convex blocks 14 are preferably provided. When installing the anti-breakdown contactor, the staff fixes the housing cover 2 on the side wall of the housing 1 by clamping the clamping block 10 on the side wall of the clamping frame 11. Subsequently, the staff operates the anti-breakdown contactor through the convex block 14. The arrangement of the convex block 14 facilitates the staff to install the anti-breakdown contactor.

[0036] The implementation principle of an anti-breakdown contactor in an embodiment of this application is as follows: When installing the anti-breakdown contactor, the staff member clips the arc extinguishing piece 5 on the side wall of the insulating strip 6. At this time, the side wall of the arc extinguishing piece 5 abuts against the inner wall of the card slot 7. When an arc is generated between the moving contact 4 and the static contact 3, the arc is extinguished under the arc extinguishing effect of the arc extinguishing piece 5 and the arc extinguishing cover 9. When it is necessary to replace the arc extinguishing piece 5, the staff member takes out the arc extinguishing piece 5 through the card slot 7, and then clips the new arc extinguishing piece 5 on the side wall of the insulating strip 6. This setting can simplify the installation process of the arc extinguishing piece 5 and facilitate the operation of the staff member.

[0037] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A breakdown-proof contactor, characterized in that: It includes a housing (1), a housing cover (2), a static contact (3) and a moving contact (4). The housing cover (2) is detachably connected to the housing (1). The static contact (3) is installed on the inner wall of the housing (1), and the moving contact (4) is installed on the inner wall of the housing cover (2). The moving contact (4) can abut against the side wall of the static contact (3). Arc extinguishing plates (5) are installed on both sides of the static contact (3). Insulating clamping strips (6) are fixed on both sides of the housing (1). A clamping groove (7) is formed on the side wall of the insulating clamping strip (6). The arc extinguishing plate (5) is clamped with the insulating clamping strip (6), and the side wall of the arc extinguishing plate (5) abuts against the inner wall of the clamping groove (7). An electromagnetic component (8) is arranged on the inner wall of the housing cover (2), and the electromagnetic component (8) is used to control the movement of the moving contact (4).

2. The anti-breakdown contactor according to claim 1, wherein: An arc extinguishing cover (9) is fixed at one end of the housing (1) away from the housing cover (2), and the side wall of the arc extinguishing cover (9) is close to the side wall of the static contact (3).

3. The anti-breakdown contactor according to claim 2, wherein: A clamping block (10) is fixed on the inner wall of the housing cover (2), and a clamping frame (11) is fixed on the inner wall of the housing (1). The clamping block (10) is clamped with the clamping frame (11).

4. The anti-breakdown contactor according to claim 3, characterized in that: Two static contacts (3) are installed, and the side walls of both static contacts (3) can abut against the side wall of the moving contact (4).

5. The anti-breakdown contactor according to claim 4, wherein: The side wall of the static contact (3) close to the moving contact (4) is trapezoid-shaped, and the side wall of the static contact (3) abuts against the side wall of the arc extinguishing plate (5).

6. The anti-breakdown contactor according to claim 5, characterized in that: A gas guide pipe (12) is fixed on the side wall of the housing (1) away from the housing cover (2), and the pipe of the gas guide pipe (12) communicates with one side of the housing (1) away from the gas guide pipe (12).

7. An anti-breakdown contactor according to claim 1, characterized in that: A stop strip (13) is fixed on the inner wall of the housing (1), and the stop strip (13) is located below the moving contact (4). The height of the stop strip (13) is lower than the height of the static contact (3).

8. The anti-breakdown contactor according to claim 2, characterized in that: A plurality of bumps (14) are fixed on the side wall of the arc extinguishing cover (9), and the bumps (14) are located at one end of the housing (1) away from the housing cover (2).

Images