Splicing type arc extinguish chamber partition plate

Abstract

At least one middle partition plate is arranged in a region, between the separation position of the moving contact and the static contact and the inner side of the arc extinguishing grid plate group, of the arc extinguishing chamber, and the region is divided into at least two different arc channels by the at least one middle partition plate; the middle partition plate is formed by splicing at least two insulating materials; the partition plate is arranged at a proper position in the arc extinguish chamber, so that the arc extinguish chamber is changed into a double-cavity structure, and breaking arc can randomly select one channel to enter the arc extinguish grid plate. Therefore, the arc column is compressed, and the arc voltage is improved. The whole arc extinguish chamber is suitable for occasions needing high arc voltage, the arc extinguishing capacity of the arc extinguish chamber is improved, and the breaking capacity of the circuit breaker is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of low voltage circuit breaker, specifically speaking is related to a spliced arc-extinguishing chamber partition. BACKGROUND

[0002] In the field of existing low voltage circuit breaker, AC switch can reach AC1140V.According to the latest development demand of low voltage electrical industry standard, the current voltage that AC switch bears will reach AC2000V, DC3000V.Especially in the wind power industry, after system voltage is promoted to AC2000V from AC1140V, higher arc voltage is needed to extinguish arc, as shown in the accompanying drawings, traditional arc-extinguishing chamber is all "single cavity" arc-extinguishing chamber, namely arc-extinguishing grid piece is "n" type, arc opens from movable contact and fixed contact and enters "n" type arc-extinguishing grid piece.This kind of traditional arc-extinguishing chamber structure is suitable for the scene that arc pressure requirement is lower, once in the occasion that higher arc pressure is needed, it is difficult to realize, leading to poor arc extinguishing effect of arc-extinguishing chamber. Figure 1 SUMMARY The utility model discloses a spliced arc-extinguishing chamber partition that is arranged in the proper position in the arc-extinguishing chamber, makes the arc-extinguishing chamber become "double cavity" structure, and the broken arc will randomly select a channel and enter the arc-extinguishing grid piece, so that the arc column is compressed, and the arc voltage is improved.The whole arc-extinguishing chamber is suitable for the occasion that higher arc pressure is needed, improves the arc extinguishing capacity of the arc-extinguishing chamber, and improves the breaking capacity of the circuit breaker.

[0003] The utility model discloses a spliced arc-extinguishing chamber partition that is arranged in the proper position in the arc-extinguishing chamber, makes the arc-extinguishing chamber become "double cavity" structure, and the broken arc will randomly select a channel and enter the arc-extinguishing grid piece, so that the arc column is compressed, and the arc voltage is improved.The whole arc-extinguishing chamber is suitable for the occasion that higher arc pressure is needed, improves the arc extinguishing capacity of the arc-extinguishing chamber, and improves the breaking capacity of the circuit breaker.

[0004] TECHNICAL SCHEME

[0005] In order to realize the above technical purpose, the spliced arc-extinguishing chamber partition provided by the utility model is characterized by that at least one intermediate partition is arranged in the region between the arc-extinguishing grid piece group and the position where the movable contact and the fixed contact are separated, and the at least one intermediate partition divides the region into at least two different arc channels.

[0006] The intermediate partition is spliced from at least two kinds of insulating materials.

[0007] In one of the embodiments, the at least one intermediate partition and the arc-extinguishing grid pieces in the arc-extinguishing grid piece group form an m-shaped arc channel.

[0008] In one of the embodiments, the at least one intermediate partition is vertically installed on the inner side of the arc-extinguishing grid pieces.

[0009] In one of the embodiments, the at least one intermediate partition includes a gas generating part close to the movable contact and a high-temperature-resistant part close to the arc-extinguishing grid piece.

[0010] In one of the embodiments, the high-temperature-resistant part and the gas-producing part are spliced together.

[0011] In one of the embodiments, the high-temperature-resistant part and the gas-producing part are spliced together by riveting or screwing.

[0012] In one of the embodiments, the high-temperature-resistant part surrounds the gas-producing part except the part corresponding to the moving trajectory of the moving contact.

[0013] In one of the embodiments, one end of the moving arc plate is located at the end of the arc-extinguishing grid group in the arc-extinguishing chamber close to the breaking position of the moving contact, one end of the static arc plate is located at the end of the arc-extinguishing grid group in the arc-extinguishing chamber close to the static contact, the other end of the moving arc plate corresponds to the breaking position of the moving contact, the other end of the static arc plate corresponds to the static contact, and the high-temperature-resistant part extends from the inside of the moving arc plate to the inside of the static arc plate through the inside of the arc-extinguishing grid group.

[0014] In one of the embodiments, the high-temperature-resistant part is located in the middle of the at least one intermediate partition plate, and the high-temperature-resistant part has grooves on both sides, and the gas-producing part is embedded in the grooves on both sides.

[0015] Advantages

[0016] The spliced arc-extinguishing chamber partition plate provided by the utility model is arranged with at least one intermediate partition plate from the position where the moving contact and the static contact are separated to the inside of the arc-extinguishing grid group, the at least one intermediate partition plate divides the area into at least two different arc channels, the intermediate partition plate is spliced by at least two kinds of insulating materials, the partition plate is arranged at a proper position in the arc-extinguishing chamber, so that the arc-extinguishing chamber becomes a "double-cavity" structure, the breaking arc is randomly selected to enter an arc-extinguishing grid, in this way, the arc column is compressed, and the arc voltage is improved. The whole arc-extinguishing chamber is suitable for occasions requiring higher arc voltage, the arc-extinguishing capacity of the arc-extinguishing chamber is improved, and the breaking capacity of the circuit breaker is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained according to the drawings without creative labor.

[0018] FIG. 1 is a schematic diagram of an arc-extinguishing chamber in the prior art; Figure 1 FIG. 1 is a schematic diagram of an arc-extinguishing chamber in the prior art;

[0019] FIG. 1 is a schematic diagram of an arc-extinguishing chamber in the prior art; Figure 2is a schematic diagram of an arc extinguishing chamber in the embodiment 1 of the utility model;

[0020] attached Figure 3 is a schematic diagram of a contact system and an intermediate partition plate in the embodiment 1 of the utility model;

[0021] attached Figure 4 is a schematic diagram of an intermediate partition plate splicing in the embodiment 1 of the utility model;

[0022] attached Figure 5 is a schematic diagram of a contact system and an arc extinguishing chamber in the embodiment 1 of the utility model;

[0023] attached Figure 6 is a schematic diagram of an arc extinguishing chamber, a contact system and an intermediate partition plate in the embodiment 1 of the utility model; DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely explained in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are for the purpose of illustration only, not the only embodiment.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0027] In the present application, unless specifically defined and limited otherwise, the first feature is "on", "under", "above" and "over" the second feature can be the first feature directly and the second feature contact, or the first feature and the second feature indirectly contact through the intermediate medium. Moreover, the first feature is "on", "above" and "over" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0029] Embodiments

[0030] As shown in the accompanying Figure 1 , the traditional arc-extinguishing chamber is a "single cavity" arc-extinguishing chamber, that is, the arc-extinguishing grid is in the shape of "n", and the arc is opened from the moving contact and enters the arc-extinguishing grid in the shape of "n". This traditional arc-extinguishing chamber structure is suitable for scenarios with low arc pressure requirements. Once it is used in a situation requiring high arc pressure, it is difficult to achieve, resulting in poor arc-extinguishing effect of the arc-extinguishing chamber. In order to solve this problem, as shown in the accompanying Figure 5 and 6 , the present embodiment provides a spliced arc-extinguishing chamber partition plate, the arc-extinguishing chamber a is arranged with at least one intermediate partition plate 4 between the area from the position where the moving contact 2 and the static contact 3 are separated to the inside of the arc-extinguishing grid group 1, and the at least one intermediate partition plate 4 divides the area into at least two different arc passages a1, a1'. Specifically, the at least one intermediate partition plate 4 and the arc-extinguishing grid group 1 form m-shaped arc passages a1, a1'. As shown in the accompanying Figure 2 , the at least one intermediate partition plate 4 is vertically installed inside the arc-extinguishing grid group 1. When the synchronism of the moving contact is good, the moving contact on both sides of the intermediate partition plate 4 has arc, and the arc passes through two passages and enters the grid. When the synchronism of the moving contact is poor, the moving contact on one side of the intermediate partition plate 4 has arc, and the arc passes through a corresponding passage and enters the grid. In this way, the arc column is compressed, and the arc voltage is improved.

[0031] As shown in the accompanying Figure 3 and 4As shown, the intermediate partition plate 4 is spliced. Specifically, the intermediate partition plate 4 is spliced by at least two insulating materials. The at least one intermediate partition plate 4 includes a gas generating part 401 close to the moving contact 2 and a high-temperature-resistant part 402 close to the arc-extinguishing grid piece 101. The high-temperature-resistant part 402 and the gas generating part 401 are spliced together. The high-temperature-resistant part 402 and the gas generating part 401 are spliced together by riveting or screw 403 connection mode. The high-temperature-resistant part 402 surrounds the gas generating part 401 except the part corresponding to the moving track of the moving contact 2. One end of the dynamic arc plate 5 is located in the arc-extinguishing chamber a, close to the end of the arc-extinguishing grid piece group 1 close to the breaking position of the moving contact 2, one end of the static arc plate 6 is located in the arc-extinguishing chamber a, close to the end of the arc-extinguishing grid piece group 1 close to the static contact 3, the other end of the dynamic arc plate 5 corresponds to the breaking position of the moving contact 2, the other end of the static arc plate 6 corresponds to the static contact 3, and the high-temperature-resistant part 402 extends from the inside of the dynamic arc plate 5 to the inside of the static arc plate 6 through the inside of the arc-extinguishing grid piece group 1. The gas generating part 401 made of gas generating material close to the moving and static contacts is used for generating gas to assist arc extinguishing, and after short-circuit breaking, the surface does not leave serious carbon marks, preventing the insufficient pressure resistance from being punctured. The high-temperature-resistant part 402 made of high-temperature-resistant material close to the arc-extinguishing grid piece 101 prevents the grid from being burnt and deformed by high temperature after short-circuit breaking. In this embodiment, the intermediate partition plate is used for compressing arc to ensure that the arc can enter the arc-extinguishing grid piece. At the same time, the splicing mode of the high-temperature-resistant part 402 and the gas generating part 401 is various, for example, as shown in the attached Figure 4 , the splicing part of the high-temperature-resistant part 402 and the gas generating part 401 is convex, the splicing part of the gas generating part 401 is concave, the convex is embedded in the concave, and the high-temperature-resistant part 402 and the gas generating part 401 are connected together by riveting or screw 403. The high-temperature-resistant part 402 surrounds the gas generating part 401 except the part corresponding to the moving track of the moving contact 2. For another example, the high-temperature-resistant part 402 is located between the two gas generating parts 401, the two side surfaces of the high-temperature-resistant part 402 have grooves, the gas generating parts 401 are embedded in the grooves on both sides, and the high-temperature-resistant part 402 and the gas generating part 401 are connected together by riveting or screw 403. The high-temperature-resistant part 402 surrounds the gas generating part 401 except the part corresponding to the moving track of the moving contact 2. It should be noted that the combination of the two materials of the intermediate partition plate is not limited to the specific implementation mode in this embodiment, but can also be derived into various forms of the combination of the two materials which can be easily modified by the technical personnel.

[0032] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the range disclosed in the specification.

[0033] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific and detailed manner, but should not be construed as limiting the scope of the patent of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A split arc chute barrier, characterized in that: The arc-extinguishing chamber (a) is provided with at least one intermediate partition plate (4) between the area from the position where the moving contact (2) and the stationary contact (3) are separated to the inner side of the arc-extinguishing grid group (1), and the at least one intermediate partition plate (4) divides the area into at least two different arc channels (a1, a1'); The intermediate partition plate (4) is spliced by at least two insulating materials.

2. The segmented arc-extinguishing chamber spacer of claim 1, wherein: The at least one intermediate partition plate (4) and the arc-extinguishing grid group (1) form m-type arc channels (a1, a1').

3. The segmented arc-extinguishing chamber partition of claim 2, wherein: The at least one intermediate partition plate (4) is vertically installed inside the arc-extinguishing grid group (1).

4. The segmented arc-extinguishing chamber partition of claim 1, wherein: The at least one intermediate partition plate (4) comprises a gas production part (401) close to the moving contact (2) and a high-temperature-resistant part (402) close to the arc-extinguishing grid (101).

5. The segmented arc-extinguishing chamber partition of claim 4, wherein: The high-temperature-resistant part (402) and the gas production part (401) are spliced together.

6. The segmented arc-extinguishing chamber partition of claim 5, wherein: The high-temperature-resistant part (402) and the gas production part (401) are spliced together by riveting or screw (403) connection.

7. The segmented arc-extinguishing chamber partition of claim 6, wherein: The high-temperature-resistant part (402) surrounds the gas production part (401) except the part corresponding to the moving track of the moving contact (2).

8. The segmented arc-extinguishing chamber partition of claim 4, wherein: One end of the moving arc plate (5) is located in the arc-extinguishing chamber (a) near the end of the arc-extinguishing grid group (1) close to the position where the moving contact (2) is disconnected, one end of the stationary arc plate (6) is located in the arc-extinguishing chamber (a) near the end of the arc-extinguishing grid group (1) close to the stationary contact (3), the other end of the moving arc plate (5) corresponds to the position where the moving contact (2) is disconnected, the other end of the stationary arc plate (6) corresponds to the stationary contact (3), and the high-temperature-resistant part (402) extends from the inner side of the moving arc plate (5) to the inner side of the stationary arc plate (6) through the inner side of the arc-extinguishing grid group (1).

9. The segmented arc-extinguishing chamber partition of claim 7, wherein: The high-temperature-resistant part (402) is located in the middle, the two sides of the high-temperature-resistant part (402) have grooves, and the gas production part (401) is embedded in the grooves on both sides.

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