Arc extinguishing device of circuit breaker

Abstract

The utility model relates to the technical field of circuit breaker arc extinguishing devices, in particular to a circuit breaker arc extinguishing device, which comprises a mounting seat, a sliding groove is arranged at the upper end of the mounting seat, two groups of side plates are symmetrically connected onto the sliding groove in a sliding manner, a double-thread screw is rotatably connected into the sliding groove, and the two groups of side plates are respectively in threaded connection with two ends of the double-thread screw. Multiple groups of arc extinguishing plates are inserted between the two groups of side plates, the multiple groups of arc extinguishing plates are arranged in a linear array, one sides of the multiple groups of arc extinguishing plates are jointly clamped with an auxiliary seat, the lower end of the auxiliary seat is clamped and matched with the lower end of the mounting seat, a partition plate I and a partition plate II are inserted between the two groups of side plates, and the partition plate I and the partition plate II are located at one ends of the arc extinguishing plates; the two groups of side plates are close to each other, the two sides of the multiple groups of arc extinguishing plates are mounted in a plug-in manner, the multiple groups of arc extinguishing plates are supported by the mounting seat and the two groups of side plates, a riveting process is not needed, the process requirement is low, and after electric arcs are treated by the arc extinguishing plates, smaller electric arcs or charged particles can be treated by the arc extinguishing ports and the arc extinguishing holes, so that the arc extinguishing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of arc extinguishing devices for circuit breakers, and specifically to an arc extinguishing device for a circuit breaker. Background Technique

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. An arc is generated during the opening and closing inside the circuit breaker. Therefore, an arc extinguishing device is provided inside the circuit breaker. The arc extinguishing device is an arc extinguishing cover, which accelerates the extinction of the arc.

[0003] The existing arc extinguishing device for a circuit breaker, such as the arc extinguishing cover proposed in the patent application number "CN201420456601.9", includes an arc chute, multiple arc orifice plates, side plates and other structures. The arc chute is an integrally formed groove structure. At both sides of each arc orifice plate corresponding to each mounting hole, there are provided mating chucks. The chucks on each arc orifice plate and the mounting holes on the two side plates form a riveted connection. The utility model has a good arc extinguishing effect.

[0004] However, there are defects in the existing technology. The arc orifice plate and the side plate are connected by riveting, which requires relatively high process requirements, resulting in a more troublesome assembly process for the arc extinguishing cover. And when the arc is cut by the arc orifice plate, there are still relatively small arcs or charged particles, and the arc extinguishing efficiency is relatively low only through the arc orifice plate. Therefore, an arc extinguishing device for a circuit breaker is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an arc extinguishing device for a circuit breaker to solve the problems raised in the above background technique.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] An arc extinguishing device for a circuit breaker includes a mounting base. A chute is opened at the upper end of the mounting base. Two groups of side plates are symmetrically and slidably connected to the chute. A double-headed screw is rotatably connected in the chute. The two groups of side plates are respectively threadedly connected to both ends of the double-headed screw. Multiple arc extinguishing plates are inserted between the two groups of side plates, and the multiple arc extinguishing plates are arranged in a linear array;

[0008] A common auxiliary seat is clamped on one side of the multiple arc extinguishing plates. The lower end of the auxiliary seat is clamped and matched with the lower end of the mounting base. A partition plate one and a partition plate two are inserted between the two groups of side plates. Both the partition plate one and the partition plate two are located at one end of the arc extinguishing plates. An arc extinguishing orifice is penetrated through the partition plate one, and an arc extinguishing hole is penetrated through the partition plate two. The arc extinguishing orifice is located between the arc extinguishing plates and the arc extinguishing hole.

[0009] Preferably, sliders are fixedly connected to the lower ends of the two groups of side plates. The sliders are slidably and fittingly connected in the chute. The two groups of side plates are threadedly connected to both ends of the double-headed screw through the sliders.

[0010] Preferably, the arc extinguishing plate is shaped like a "U". On one side of the two side plates, a first slot and a second slot are respectively opened. Both the first slot and the second slot are located on one side of the arc extinguishing plate. The first partition is inserted between the two first slots, and the second partition is inserted between the two second slots.

[0011] Preferably, on one side of the auxiliary seat, a plurality of card slots are opened. One sides of a plurality of arc extinguishing plates are respectively clamped in the plurality of card slots. A limiting seat is fixedly connected to the lower end of the mounting seat, and a base is fixedly connected to the lower end of the auxiliary seat. The base is in clamping fit with the limiting seat.

[0012] Preferably, on one side of the two side plates close to the arc extinguishing plate, a plurality of mounting grooves are opened. One side of the arc extinguishing plate is inserted into the mounting grooves. On one side of the two side plates close to the arc extinguishing plate, a plurality of guiding frames are fixedly connected. The plurality of guiding frames are respectively located between the plurality of mounting grooves. The guiding frame is shaped like an isosceles triangle.

[0013] Preferably, one end of the double-headed screw penetrates through the mounting seat, and a groove is opened at the end of the double-headed screw penetrating through the mounting seat. The groove is shaped like a rectangle, and a knob is inserted into the groove.

[0014] The beneficial effects of the present utility model:

[0015] With the present utility model, the auxiliary seat pre-positions a plurality of arc extinguishing plates. The double-headed screw is driven to rotate, so that the two side plates approach each other until the two side plates are in plug-in installation with both sides of the plurality of arc extinguishing plates. The first partition and the second partition are installed at positions on one side of the arc extinguishing plate between the two side plates. After removing the auxiliary seat, the arc extinguishing device of the circuit breaker can be assembled. The plurality of arc extinguishing plates are supported by the mounting seat and the two side plates. There is no need for riveting process, and the process requirements are low. Moreover, after the arc passes through the treatment of the arc extinguishing plate, smaller arcs or charged particles will be treated through the arc extinguishing ports and arc extinguishing holes, and the arc extinguishing efficiency is high. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the back structure of the present utility model;

[0019] Figure 3 It is a schematic diagram of the bottom structure of the mounting seat of the present utility model;

[0020] Figure 4It is a schematic diagram of the installation structure of the auxiliary seat of the utility model;

[0021] Figure 5 It is a schematic diagram of the side plate structure of the utility model;

[0022] The reference numerals in the figure are as follows:

[0023] 1. Mounting seat; 2. Sliding groove; 3. Double-headed screw; 4. Groove; 5. Side plate; 6. Slide block; 7. Mounting groove; 8. Guide frame; 9. Slot 1; 10. Slot 2; 11. Partition 1; 12. Partition 2; 13. Arc extinguishing port; 14. Arc extinguishing hole; 15. Arc extinguishing plate; 16. Auxiliary seat; 17. Base; 18. Limit seat; 19. Knob. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0025] An arc extinguishing device for a circuit breaker, as Figures 1 - 5 shown, includes a mounting seat 1, the mounting seat 1 is installed in the circuit breaker, a sliding groove 2 is opened at the upper end of the mounting seat 1, the upper end of the middle part of the sliding groove 2 is sealed to reduce the exposed area of the sliding groove 2, two groups of side plates 5 are symmetrically and slidably connected on the sliding groove 2, a double-headed screw 3 is rotatably connected in the sliding groove 2, the threads of the double-headed screw 3 are the same except for the opposite directions, and the two groups of side plates 5 are respectively threadedly connected to both ends of the double-headed screw 3. A plurality of arc extinguishing plates 15 are inserted between the two groups of side plates 5, and the plurality of arc extinguishing plates 15 are arranged in a linear array.

[0026] When the double-headed screw 3 rotates, the double-headed screw 3 drives the two groups of side plates 5 to slide simultaneously, and the two groups of side plates 5 slide in opposite directions and approach or move away from the arc extinguishing plates 15 at the same time.

[0027] A plurality of the arc extinguishing plates 15 are jointly clamped with an auxiliary seat 16 on one side, the lower end of the auxiliary seat 16 is clamped and matched with the lower end of the mounting seat 1, a partition 11 and a partition 12 are inserted between the two groups of side plates 5, both the partition 11 and the partition 12 are located at one end of the arc extinguishing plate 15, an arc extinguishing port 13 is penetrated through the partition 11, an arc extinguishing hole 14 is penetrated through the partition 12, the arc extinguishing port 13 is located between the arc extinguishing plate 15 and the arc extinguishing hole 14, and the auxiliary seat 16 is used for positioning the arc extinguishing plate 15 to facilitate the installation of the arc extinguishing plate 15 and the side plate 5. The clamping position of the auxiliary seat 16 and the lower end of the mounting seat 1 is fixed, so the installation position of the auxiliary seat 16 will not shift.

[0028] Position multiple sets of arc extinguishing plates 15 in advance through the auxiliary seat 16, drive the double-headed screw 3 to rotate, so that the two sets of side plates 5 approach each other until the two sets of side plates 5 are installed in a plug-in manner on both sides of the multiple sets of arc extinguishing plates 15. Install the first partition 11 and the second partition 12 at a position on one side of the arc extinguishing plates 15 between the two sets of side plates 5. Remove the auxiliary seat 16, and the arc extinguishing device of the circuit breaker can be assembled. The multiple sets of arc extinguishing plates 15 are supported by the mounting seat 1 and the two sets of side plates 5, without the need for riveting process, with low process requirements. And after the arc passes through the treatment of the arc extinguishing plates 15, the smaller arcs or charged particles will be processed through the arc extinguishing ports 13 and the arc extinguishing holes 14, and the arc extinguishing efficiency is high.

[0029] As shown in the figure, Figure 5 At the lower ends of the two sets of side plates 5, sliders 6 are fixedly connected. The sliders 6 are fitted and slidably connected in the chutes 2. The two sets of side plates 5 are threadedly connected to both ends of the double-headed screw 3 through the sliders 6.

[0030] When the shape of the slider 6 is set to "L" shape, the side plate 5 cannot be separated from the mounting seat 1. When the shape of the slider 6 is set to rectangular, the side plate 5 can be separated from the mounting seat 1. The side plate 5 and the mounting seat 1 are detachable. The double-headed screw 3 drives the side plate 5 to move through the slider 6.

[0031] As Figure 1 、 Figure 4 、 Figure 5 As shown, the arc extinguishing plates 15 are set in a "U" shape. On one side of the two sets of side plates 5, a first slot 9 and a second slot 10 are opened. Both the first slot 9 and the second slot 10 are located on one side of the arc extinguishing plates 15. The first partition 11 is inserted between the two sets of first slots 9, and the second partition 12 is inserted between the two sets of second slots 10.

[0032] The arc extinguishing plates 15 are set in a "U" shape, and the opening and closing position ends are located in the U-shaped space, surrounding the arc on three sides, increasing the arc extinguishing space range. The first slot 9 and the second slot 10 are used for the alignment installation of the first partition 11 and the second partition 12, effectively processing the residual charged particles and the arc after the arc is cut.

[0033] As Figure 3 、 Figure 4 As shown, on one side of the auxiliary seat 16, multiple sets of card slots are opened. One sides of the multiple sets of arc extinguishing plates 15 are respectively clamped in the multiple sets of card slots. A limiting seat 18 is fixedly connected to the lower end of the mounting seat 1, and a base 17 is fixedly connected to the lower end of the auxiliary seat 16. The base 17 is in clamping fit with the limiting seat 18.

[0034] The multiple sets of arc extinguishing plates 15 are neatly clamped in the auxiliary seat 16. The limiting seat 18 restricts the installation position of the auxiliary seat 16. After the arc extinguishing plates 15 are installed, the auxiliary seat 16 can be removed, reducing the volume of the arc extinguishing device.

[0035] As Figures 4 - 5As shown in the figure, on one side of the two sets of side plates 5 close to the arc extinguishing plate 15, a plurality of installation grooves 7 are opened. One side of the arc extinguishing plate 15 is inserted into the installation grooves 7. On one side of the two sets of side plates 5 close to the arc extinguishing plate 15, a plurality of guiding frames 8 are fixedly connected. The plurality of guiding frames 8 are respectively located between the plurality of installation grooves 7. The shape of the guiding frame 8 is set as an isosceles triangle.

[0036] One side of the arc extinguishing plate 15 is fixedly connected with an insertion block, and the insertion block is inserted into the installation groove 7. During the installation process of the arc extinguishing plate 15 and the side plate 5, the guiding frame 8 separates the sides of the adjacent arc extinguishing plates 15, which is more convenient for the installation of the arc extinguishing plate 15 and the installation groove 7.

[0037] As Figures 2 - 3 shown in the figure, one end of the double-headed screw 3 penetrates through the mounting seat 1, and a groove 4 is opened at the end of the double-headed screw 3 penetrating through the mounting seat 1. The shape of the groove 4 is set as a rectangle, and a knob 19 is inserted into the groove 4.

[0038] The knob 19 is inserted into the groove 4, and the knob 19 is rotated to drive the double-headed screw 3 to rotate. After completion, the knob 19 is pulled out to reduce the volume of the arc extinguishing device.

[0039] The working principle of a circuit breaker arc extinguishing device provided by the present utility model is as follows:

[0040] Through the auxiliary seat 16, the plurality of arc extinguishing plates 15 are pre-positioned first. The double-headed screw 3 is driven to rotate, so that the two sets of side plates 5 approach each other until the two sets of side plates 5 are inserted and installed on both sides of the plurality of arc extinguishing plates 15. A partition plate one 11 and a partition plate two 12 are installed at a position on one side of the arc extinguishing plates 15 between the two sets of side plates 5. After the auxiliary seat 16 is removed, the circuit breaker arc extinguishing device can be assembled. The plurality of arc extinguishing plates 15 are supported by the mounting seat 1 and the two sets of side plates 5. There is no need for riveting process, and the process requirements are low. And after the arc passes through the treatment of the arc extinguishing plate 15, the smaller arcs or charged particles will be processed through the arc extinguishing ports 13 and the arc extinguishing holes 14, and the arc extinguishing efficiency is high.

[0041] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An arc extinguishing device for a circuit breaker, comprising a mounting base (1), characterized in that, The upper end of the mounting base (1) is provided with a sliding groove (2). Two groups of side plates (5) are symmetrically and slidably connected to the sliding groove (2). A double-headed screw rod (3) is rotatably connected in the sliding groove (2). The two groups of side plates (5) are respectively threadedly connected to both ends of the double-headed screw rod (3). A plurality of arc extinguishing plates (15) are inserted between the two groups of side plates (5), and the plurality of arc extinguishing plates (15) are arranged in a linear array. A plurality of the arc extinguishing plates (15) are jointly clamped with an auxiliary seat (16) on one side. The lower end of the auxiliary seat (16) is clamped and matched with the lower end of the mounting base (1). A partition plate one (11) and a partition plate two (12) are inserted between the two groups of side plates (5). Both the partition plate one (11) and the partition plate two (12) are located at one end of the arc extinguishing plates (15). An arc extinguishing opening (13) is penetratingly provided on the partition plate one (11), and an arc extinguishing hole (14) is penetratingly provided on the partition plate two (12). The arc extinguishing opening (13) is located between the arc extinguishing plates (15) and the arc extinguishing hole (14).

2. The arc extinguishing device of a circuit breaker according to claim 1, characterized in that, Sliders (6) are fixedly connected to the lower ends of the two groups of side plates (5). The sliders (6) are fittingly and slidably connected in the sliding groove (2). The two groups of side plates (5) are threadedly connected to both ends of the double-headed screw rod (3) through the sliders (6).

3. The arc extinguishing device of a circuit breaker according to claim 1, characterized in that, The arc extinguishing plates (15) are shaped like a "U". Slots one (9) and slots two (10) are provided on one side of each of the two groups of side plates (5). Both the slots one (9) and the slots two (10) are located on one side of the arc extinguishing plates (15). The partition plate one (11) is inserted between the two groups of slots one (9), and the partition plate two (12) is inserted between the two groups of slots two (10).

4. A circuit breaker arc extinguishing device according to claim 1, characterized in that, A plurality of card slots are provided on one side of the auxiliary seat (16). One sides of the plurality of arc extinguishing plates (15) are respectively clamped in the plurality of card slots. A limit seat (18) is fixedly connected to the lower end of the mounting base (1). A base (17) is fixedly connected to the lower end of the auxiliary seat (16). The base (17) is clamped and matched with the limit seat (18).

5. A circuit breaker arc extinguishing device according to claim 1, characterized in that, A plurality of mounting grooves (7) are provided on one side of each of the two groups of side plates (5) close to the arc extinguishing plates (15). One side of the arc extinguishing plates (15) is inserted into the mounting grooves (7). A plurality of guiding frames (8) are fixedly connected to one side of each of the two groups of side plates (5) close to the arc extinguishing plates (15). The plurality of guiding frames (8) are respectively located between the plurality of mounting grooves (7). The guiding frames (8) are shaped like isosceles triangles.

6. The arc extinguishing device of a circuit breaker according to claim 1, characterized in that, One end of the double-headed screw rod (3) penetrates through the mounting base (1), and a groove (4) is provided at the end of the double-headed screw rod (3) penetrating through the mounting base (1). The groove (4) is shaped like a rectangle, and a knob (19) is inserted into the groove (4).

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