Double arc magnetic conductor blown arc system and a DC switch

Abstract

The double arc magnetic conductor blown arc system is characterized in that it comprises a first magnetic conductor (1), a second magnetic conductor (2), a first permanent magnet (3), a second permanent magnet (4), a first arc blocking wall (10) and a second arc blocking wall (20). The first magnetic conductor (1) comprises a first magnetic conductor side wall I (11), a first magnetic conductor side wall II (12), and a first magnetic conductor connecting base (13). The first magnetic conductor side wall I (11) and the first magnetic conductor side wall II (12) are parallel and symmetrical. The first magnetic conductor connecting base (13) is connected to the first magnetic conductor side wall I (11) and the first magnetic conductor side wall II (12), respectively, to form a U-shaped structure, with the first polar surface of the first permanent magnet (3) in contact with the outside of the first magnetic conductor connecting base (13). The second magnetic conductor (2) comprises a second magnetic conductor side wall I (21), a second magnetic conductor side wall II (22), and a second magnetic conductor connecting base (23), wherein the second magnetic conductor side wall I (21) and the second magnetic conductor side wall II (22) are parallel and symmetrical. The second magnetic conductor connecting base (23) is connected to the second magnetic conductor side wall I (21) and the second magnetic conductor side wall II (22), respectively, to form a U-shaped structure, with the first polar surface of the second permanent magnet (4) in contact with an inner surface of the second magnetic conductor connecting base (23). The U-shaped opening of the first magnetic conductor (1) is located on the static arc angle (8), and the U-shaped opening of the second magnetic conductor (2) is located on the dynamic arc angle (6). The U-shaped opening of the first magnetic conductor (1) is positioned opposite the U-shaped opening of the second magnetic conductor (2). The arc quenching chamber (9) is located between the dynamic arc angle (6) and the static arc angle (8). The static arc angle (8) is connected to a static contact (7). The dynamic arc angle (6) is connected to a dynamic contact (5), with the first magnetic conductor side wall I (11), the first magnetic conductor side wall II (12), the second magnetic conductor side wall I (21), and the second magnetic conductor side wall II (22) being located between the static arc angle (8) and the dynamic arc angle (6). The first arc-blocking wall I (10) is located on the same side of the first magnetic conductor side wall I (11) and the second magnetic conductor side wall I (21), with the second arc-blocking wall (20) being located on the same side of the first magnetic conductor side wall II (12) and the second magnetic conductor side wall II (22). The first arc-blocking wall (10) and the second arc-blocking wall (20) are used to separate the first magnetic conductor (1) and the second magnetic conductor (2) from the arc.

Description

Technical field

[0001] The utility model relates to the technical field of low-voltage electrical equipment, in particular to a double-arc magnetic conductor blown arc system and a DC switch. Background technology

[0002] Photovoltaic, energy storage, and other systems require DC circuit breakers for control and protection. Polarity-free DC arc interruption is the most significant technical challenge for DC circuit breakers, and the current trend toward high-voltage applications has made the development and performance improvement of polarity-free DC circuit breakers more difficult. Low-voltage DC arc interruption relies primarily on increasing the arc voltage to limit the current to zero, thus interrupting the arc by creating the zero-crossing point. However, state-of-the-art circuit breakers are limited in size, only slowly drive the arc toward the arc-quenching chamber, and the current direction affects the direction of arc movement. Content of the utility model

[0003] To solve the problems inherent in existing technology, a double-arc magnetic conductor arc-quenching system and a DC circuit breaker are provided in the present utility model. This system generates a magnetic field distribution within the arc movement area of ​​the circuit breaker capable of driving both forward and reverse arcs to the arc-quenching chamber. The adoption of a double-arc magnetic conductor sidewall structure enhances the magnetic field effect on the arc, and the utility model can be better utilized in the arc-quenching system of non-polar DC circuit breakers, offering a simple structure and good cost-effectiveness.

[0004] To achieve the aforementioned purpose, the utility model offers the following technical solutions: A double-arc magnetic conductor blown arc system comprises a first magnetic conductor, a second magnetic conductor, a first permanent magnet, a second permanent magnet, a first arc blocking wall, and a second arc blocking wall;

[0005] The first magnetic conductor comprises a first magnetic conductor side wall I, a first magnetic conductor side wall II and a first magnetic conductor connecting base, wherein the first magnetic conductor side wall I and the first magnetic conductor side wall II are parallel and symmetrical, the first magnetic conductor connecting base is connected to the first magnetic conductor side wall I and the first magnetic conductor side wall II respectively to form a U-shaped structure, wherein the first polar surface of the first permanent magnet is in contact with the outside of the first magnetic conductor connecting base.

[0006] The second magnetic conductor comprises a second magnetic conductor side wall I, a second magnetic conductor side wall II and a second magnetic conductor connecting base, wherein the second magnetic conductor side wall I and the second magnetic conductor side wall II are parallel and symmetrical, the second magnetic conductor connecting base is connected to the second magnetic conductor side wall I and the second magnetic conductor side wall II respectively to form a U-shaped structure, wherein the first polar surface of the second permanent magnet is in contact with an inside of the second magnetic conductor connecting base.

[0007] The U-shaped opening of the first magnetic conductor is arranged at the static arc angle, the U-shaped opening of the second magnetic conductor is arranged at the dynamic arc angle, the U-shaped opening of the first magnetic conductor being opposite the U-shaped opening of the second magnetic conductor, the arc quenching chamber being provided between the dynamic arc angle and the static arc angle, the static arc angle being connected to a static contact, and the dynamic arc angle being connected to a dynamic contact, with the first magnetic conductor side wall I, the first magnetic conductor side wall II, the second magnetic conductor side wall I, and the second magnetic conductor side wall II being located between the static arc angle and the dynamic arc angle.

[0008] The first arc-blocking wall I is located on the same side of the first magnetic conductor side wall I and the second magnetic conductor side wall I, wherein the second arc-blocking wall is located on the same side of the first magnetic conductor side wall II and the second magnetic conductor side wall II. The first arc-blocking wall and the second arc-blocking wall are used to separate the first magnetic conductor and the second magnetic conductor from the arc. Preferably, the first polar surface of the first permanent magnet has an opposite polarity to the first polar surface of the second permanent magnet. Preferably, the planes of symmetry of the first magnetic conductor (1), the first permanent magnet, the second magnetic conductor, and the second permanent magnet coincide.

[0009] Preferably, the first magnetic conductor side wall I and the second magnetic conductor side wall I are arranged on the same side as the dynamic contact and the static contact, wherein the first magnetic conductor side wall II and the second magnetic conductor side wall II are arranged on the same side as the dynamic contact and the static contact.

[0010] A gap is provided between the first magnetic conductor side wall I and the second magnetic conductor side wall I, as well as a gap between the first magnetic conductor side wall II and the second magnetic conductor side wall II.

[0011] Preferably, the first magnetic conductor side wall I and the first magnetic conductor side wall II are each provided with a first arc-shaped section of the magnetic conductor, wherein the first arc-shaped section of the magnetic conductor extends from the area of ​​the dynamic contact and the static contact towards the arc quenching chamber. The first arc-shaped section of the magnetic conductor is connected to the first magnetic conductor connection base via a first magnetic conductor connection section.

[0012] Preferably, the second magnetic conductor side wall I and the second magnetic conductor side wall II are both provided with a second arc-shaped section of the magnetic conductor, wherein the second arc-shaped section of the magnetic conductor extends from the area of ​​the dynamic contact, the static contact, towards the arc quenching chamber. The second arc-shaped section of the magnetic conductor is connected to the second magnetic conductor connection base via the second magnetic conductor connection section.

[0013] Preferably, the first arc-shaped section of the magnetic conductor of the first magnetic conductor side wall I and the first magnetic conductor side wall II runs parallel to the curvature of the static arc angle, and / or the second arc-shaped section of the magnetic conductor of the second magnetic conductor side wall I and the second magnetic conductor side wall II runs parallel to the curvature of the dynamic arc angle, and / or the first arc-shaped section of the magnetic conductor of the first magnetic conductor side wall I and the first magnetic conductor side wall II runs parallel to the curvature of the second arc-shaped section of the magnetic conductor of the second magnetic conductor side wall I and the second magnetic conductor side wall II and is parallel to the curvature of the dynamic arc angle.

[0014] Preferably, the second polar surface of the second permanent magnet is in contact with the dynamic arc angle, or the second polar surface of the second permanent magnet is in contact with the dynamic arc angle via a ferromagnet. Preferably, a gap is provided along the side wall plane between the first magnetic conductor side wall I and the first magnetic conductor side wall II and the static arc angle, wherein a gap is provided along the side wall plane between the second arc-shaped section of the magnetic conductor of the second magnetic conductor side wall I and the second magnetic conductor side wall II and the dynamic arc angle.

[0015] A DC circuit breaker comprises a double arc-magnetic conductor-blown arc system, as described in one of the above.

[0016] The utility model exhibits the following advantageous technical effects compared to the prior art: The utility model discloses a double-arc magnetic conductor blown-arc system using a magnetic conductor with a pair of double symmetrical arc-shaped sections in conjunction with two permanent magnets. These are positioned at the static and dynamic arc angles of a circuit breaker, respectively. The magnetic conductors have the same magnetization polarity, while the dynamic arc angle section is magnetized to the opposite polarity. To generate a magnetic field distribution between the dynamic and static contacts and the dynamic and static arc angles, a magnetic field component parallel to the arc-blocking wall (the first magnetic field component) and a magnetic field component perpendicular to the arc-blocking wall are included.Near the first arc-blocking wall (the second magnetic field component), a magnetic field component is generated, and a magnetic field component is generated perpendicular to the arc-blocking wall near the second arc-blocking wall (the third magnetic field component). Simultaneously, the intensity of the magnetic field in the arc region of the magnetic conductor is significantly higher than in other regions, thus enabling a more effective influence on the arc and accelerating its movement. With the magnetic field distribution described above, the arc is biased towards either the first or the second arc-blocking wall by the influence of the first magnetic field component due to the difference in current direction. It then moves towards the arc-quenching chamber under the influence of the second or the third magnetic field component near the arc-blocking wall.Regardless of the current direction, the arc moves towards the arc quenching chamber under the influence of the magnetic field force.

[0017] In the present utility model, two arc-shaped magnetic conductors and two permanent magnets interact, positioned at the static and dynamic arc angles, respectively. The two magnetic conductors exhibit the same polarity under the influence of the permanent magnet's magnetization, while at the dynamic arc angle, the permanent magnet is magnetized with the opposite polarity. A magnetic field distribution within the arc movement area of ​​the circuit breaker can drive the forward and reverse arcs towards the arc quenching chamber. Simultaneously, the use of the double-arc magnetic conductor sidewall structure, on the one hand, intensifies the magnetic field effect on the arc, and on the other hand, prevents the influence of the magnetic field distribution on the arc root, thus generating a magnetic field force in the opposite direction.Therefore, the utility model can be better used in the arc quenching system of polarity-free DC circuit breakers with simple structure and good economics. Figures Fig. Figure 1 is a front view of the construction of the double-arc magnetic conductor blowing arc system of the utility model; Fig. Figure 2 is a side view of the structure of the double-arc magnetic conductor blown arc system of the utility model; Fig. Figure 3 is a schematic representation of the structure of the first permanent magnet of the utility model; Fig. Figure 4 is a schematic representation of the structure of the second permanent magnet of the utility model;

[0018] Where: First magnetic conductor 1; second magnetic conductor 2; first permanent magnet 3; second permanent magnet 4; dynamic contact 5; dynamic arc angle 6; static contact 7; static arc angle 8; arc quenching chamber 9; first arc blocking wall 10; first magnetic conductor side wall I 11; first magnetic conductor side wall II 12; first magnetic conductor connection base 13; first magnetic conductor connection section 14; first arc-shaped section of the magnetic conductor 15; second arc blocking wall 20; second magnetic conductor side wall I 21; second magnetic conductor side wall II 22; second magnetic conductor connection base 23; second magnetic conductor connection section 24; second arc-shaped section of the magnetic conductor 25. Specific embodiments

[0019] Only certain exemplary embodiments are briefly described below. As a person skilled in the art will recognize, the described embodiments can be modified in many ways without deviating from the spirit or scope of the utility model. Accordingly, the figures and descriptions should be regarded as essentially exemplary and not as limiting.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and other terms indicating a direction or positional relationship are based on the directions or positional relationships shown in the figures provided for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a particular orientation or be designed and operated in a particular orientation, and therefore must not be construed as a limitation of the utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying a relative meaning or the number of specified technical features. Consequently, a feature defined as "first" or "second" may include one or more such features, either explicitly or implicitly. In the description of the utility model, "several" means two or more unless expressly and specifically limited otherwise.

[0022] In the present utility model, the terms "mounted," "connected," "linked," "fixed," and the like are to be interpreted broadly, unless expressly specified and limited otherwise. For example, they may refer to a fixed connection, a detachable connection, or a single-piece unit. They may refer to a mechanical connection, an electrical connection, or a communication link. They may also refer to a direct connection or an indirect connection via an intermediate medium: a connection within the two elements or an interactive relationship between the two elements. For a person skilled in the art, the specific meaning of the aforementioned terms in the present utility model can be understood on a case-by-case basis.

[0023] In the present utility model, unless expressly specified and limited otherwise, the first feature, which lies "above" or "below" the second feature, may indicate direct contact between the first and second features. It may also mean that contact between the first and second features is not direct, but rather mediated by an additional feature between them. The first feature, which lies "above" the second feature, "above" the second feature, and "above" the second feature, may also mean that the first feature lies directly above and diagonally above the second feature. It may also simply mean that the first feature lies horizontally higher than the second feature. The first feature, which lies "below" the second feature, "below" the second feature, and "below" the second feature, means that the first feature lies directly above and diagonally above the second feature.It could also simply mean that the first feature is horizontally smaller than the second feature.

[0024] It should be understood that the terms “including” and “comprise”, when used in this description and the patent claims, indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terms used in the description of this utility model serve solely to describe specific embodiments and are not intended to limit the utility model. As used in the description of this utility model and the claims, the singular forms "eine / ein / einer" and "der / die / das" include the plural form unless the context clearly indicates otherwise.

[0026] It should further be understood that the term “and / or”, as used in the description of the present utility model and the patent claims, refers to and includes any combination and all possible combinations of one or more of the points listed in conjunction.

[0027] The figures show various schematic representations of structures according to the disclosed embodiments of the utility model. These figures are not to scale, with certain details enlarged and some omitted for clarity. The shapes of the various areas and layers shown in the figures, as well as the relative sizes and positions between them, are only examples and may differ in practice due to manufacturing tolerances or technical limitations. A person skilled in the art can additionally design areas / layers with other shapes, sizes, and relative positions as required in practice.

[0028] Exemplary embodiments of the utility model are described in detail below in conjunction with the figures. Example 1

[0029] In the embodiment of the present utility model, a double-arc magnetic conductor blown arc system is provided, comprising a first magnetic conductor 1, a second magnetic conductor 2, a first permanent magnet 3, a second permanent magnet 4, a dynamic contact 5, a dynamic arc angle 6, a static contact 7, a static arc angle 8, an arc quenching chamber 9 and an arc blocking wall.

[0030] The first magnetic conductor 1 comprises a first magnetic conductor side wall I 11, a first magnetic conductor side wall II 12, and a first magnetic conductor connecting base 13, wherein the first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12 are parallel and symmetrical, and the first magnetic conductor connecting base 13 is connected to the first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12, respectively, to form a U-shaped structure. The first polar surface of the first permanent magnet 3 is in contact with the outside of the first magnetic conductor connecting base 13.

[0031] The second magnetic conductor 2 comprises a second magnetic conductor side wall I 21, a second magnetic conductor side wall II 22, and includes a second magnetic conductor connecting base 23, wherein the second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22 are parallel and symmetrical. The second magnetic conductor connecting base 23 is connected to the second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22, respectively, to form a U-shaped structure, with the first polar surface of the second permanent magnet 4 in contact with an inner surface of the second magnetic conductor connecting base 23.

[0032] The first polar surface of the first permanent magnet 3 has an opposite polarity to the first polar surface of the second permanent magnet 4.

[0033] The U-shaped opening of the first magnetic conductor 1 is arranged opposite the U-shaped opening of the second magnetic conductor 2.

[0034] The planes of symmetry of the first magnetic conductor 1, the first permanent magnet 3, the second magnetic conductor 2 and the second permanent magnet 4 coincide.

[0035] The U-shaped opening of the first magnetic conductor 1 is arranged on the static arc angle 8; one side of the first magnetic conductor connection base 13 touches the static arc angle 8, the other side of the first magnetic conductor connection base 13 touches the first permanent magnet 3, and the first permanent magnet 3 is not in contact with the static arc angle 8.

[0036] The U-shaped opening of the second magnetic conductor 2 is arranged on the dynamic arc angle 6 and the second permanent magnet 4 is clamped between the second magnetic conductor connecting base 23 and the dynamic arc angle 6.

[0037] The first magnetic conductor side wall I 11 and the second magnetic conductor side wall I 21 are located on the same side of the dynamic contact 5 and the static contact 7 and are arranged between the static arc angle 8 and the dynamic arc angle 6; the dynamic contact 5 is movable relative to the static contact 7 in order to effect the closing and opening of the dynamic contact 5 and the static contact 7.

[0038] There is a gap between the first magnetic conductor side wall I 11 and the second magnetic conductor side wall I 21.

[0039] The first magnetic conductor side wall II 12 and the second magnetic conductor side wall II 22 are located on the same side of the dynamic contact 5 and the static contact 7 and are arranged between the static arc angle 8 and the dynamic arc angle 6. A gap exists between the first magnetic conductor side wall II 12 and the second magnetic conductor side wall II 22.

[0040] The arc blocking wall comprises a first arc blocking wall 10 and a second arc blocking wall 20. The first arc blocking wall 10, the first magnetic conductor side wall I 11 and the second magnetic conductor side wall II 21 are located on the same side of the dynamic contact 5 and the static contact 7, and the first arc blocking wall 10 is located between the first magnetic conductor side wall I 11, the second magnetic conductor side wall I 21 and the dynamic contact 5, the static contact 7, the dynamic arc angle 6 and the static arc angle 8.

[0041] The second arc blocking wall 20, the first magnetic conductor side wall II 12, and the second magnetic conductor side wall II 22 are located on the same side of the dynamic contact 5 and the static contact 7, and the second arc blocking wall 20 is located between the first magnetic conductor side wall II 12, the second magnetic conductor side wall II 22, and the dynamic contact 5, the static contact 7, the dynamic arc angle 6, and the static arc angle 8. The first arc blocking wall 10 and the second arc blocking wall 20 are used to separate the first magnetic conductor 1 and the second magnetic conductor 2 from the arc.

[0042] The arc quenching chamber 9 is located between the dynamic arc angle 6 and the static arc angle 8.

[0043] The first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12 have an arc-shaped section and a connecting section, and the first arc-shaped section of the magnetic conductor 15 of the first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12 extends from the area of ​​the dynamic contact 5 and the static contact 7 to the arc quenching chamber 9, and the first magnetic conductor connecting section 14 connects the first arc-shaped section of the magnetic conductor 15 of the first magnetic conductor side wall I 11 and the first arc-shaped section of the magnetic conductor 15 of the first magnetic conductor side wall II 12 to the first magnetic conductor connecting base 13.

[0044] The second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22 have an arc-shaped section and a connecting section, and the second arc-shaped section of the magnetic conductor 25 of the second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22 extends from the area of ​​the dynamic contact 5 and the static contact 7 to the arc quenching chamber 9, and the second magnetic conductor connecting section 24 connects the second arc-shaped section of the magnetic conductor 25 of the second magnetic conductor side wall I 21 and the second arc-shaped section of the magnetic conductor 25 of the second magnetic conductor side wall II 22 to the second magnetic conductor connecting base 23.

[0045] The material of the dynamic arc angle 6 is an electrically conductive ferromagnetic material, the second polar surface of the second permanent magnet 4 is in contact with the dynamic arc angle 6, or the second polar surface of the second permanent magnet 4 is in contact with the dynamic arc angle 6 by means of a ferromagnet.

[0046] A gap is provided along the side wall plane between the first arc-shaped section of the magnetic conductor 15 of the first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12 and the static arc angle 8.

[0047] A gap is provided along the side wall plane between the second arc-shaped section of the magnetic conductor 25 of the second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22 and the dynamic arc angle 6.

[0048] The first arc-shaped section of the magnetic conductor 15 of the first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12 is similar to or parallel to the curvature of the static arc angle 8.

[0049] The second arc-shaped section of the magnetic conductor 25 of the second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22 is similar to or parallel to the curvature of the dynamic arc angle 6.

[0050] The curvature between the first arc-shaped section of the magnetic conductor 15 of the first magnetic conductor side wall I 11 and the first magnetic conductor side wall II 12, as well as the second arc-shaped section of the magnetic conductor 25 of the second magnetic conductor side wall I 21 and the second magnetic conductor side wall II 22, can also be of a similar or parallel value and a similar or parallel value to the dynamic arc angle 6.

[0051] Here is a revised version of your text that improves readability without changing the technical details: Iron, cobalt, nickel, and other ferromagnetic materials contain many magnetic domains within them. When an external magnetic field is applied, the magnetic moments of these domains preferentially align in the same direction as the external magnetic field. This results in a strong magnetization vector that generates an induced magnetic field.

[0052] When the polar surface of a permanent magnet is brought into contact with a ferromagnet, the ferromagnet becomes magnetized and exhibits a magnetic field with the same polarity as that of the contacted polar surface, but only within a specific range. Based on this principle, the utility model uses a pair of doubly symmetrical, arc-shaped magnetic conductors combined with two permanent magnets. These magnets are aligned with the static and dynamic arc angles of the circuit breaker, respectively. Both magnetic conductors have the same magnetization polarity and simultaneously magnetize the dynamic arc angle with opposite polarity. This creates a magnetic field distribution between the dynamic and static contacts, as well as between the dynamic and static arc angles.

[0053] The magnetic field has the following characteristics: A magnetic field component parallel to the arc-blocking wall (first magnetic field component).

[0054] A magnetic field component perpendicular to the arc blocking wall near the first arc blocking wall (second magnetic field component).

[0055] A magnetic field component perpendicular to the arc-blocking wall near the second arc-blocking wall (third magnetic field component).

[0056] Additionally, the magnetic field strength in the arc-shaped section of the magnetic conductor is significantly higher than in other areas. This has a greater influence on the arc and allows it to be moved more quickly.

[0057] Under the described magnetic field distribution, the arc is initially guided towards the first or second arc-blocking wall by the first magnetic field component, depending on the current direction. Subsequently, under the influence of the second or third magnetic field component, located near the arc-blocking wall, it moves further towards the arc-quenching chamber. Regardless of the current direction, the arc is guided towards the arc-quenching chamber by the magnetic field force.

[0058] Furthermore, it should be emphasized that the present application utilizes the sidewall structure of the arc-shaped arc-blocking wall. This structure offers the following advantages: Increased magnetic field strength in the arc area: This enables rapid movement of the arc.

[0059] Avoiding undesirable effects of the magnetic guide plate: In the area of ​​the arc root, particularly at dynamic and static arc angles, the current direction perpendicular to the arc blocking wall leads to a magnetic force that could impede the movement of the arc towards the arc quenching chamber. This negative effect is minimized by the proposed structure. Example 2

[0060] In a further embodiment of the utility model, a DC circuit breaker is described that is equipped with one of the arc-blowing systems explained above. This system utilizes two arc-shaped magnetic conductors and two permanent magnets, each positioned at the static and dynamic arc angles, respectively. Under the influence of permanent magnetization, the magnetic conductors have the same polarity. The dynamic arc angle is magnetized with the opposite polarity, thereby creating a magnetic field distribution within the arc movement area of ​​the circuit breaker. This distribution propels both the forward and reverse arcs toward the arc-quenching chamber.

[0061] In addition, the double arc magnetic conductor sidewall structure offers two key advantages: It intensifies the magnetic field effect on the arc.

[0062] It reduces the influence of the magnetic field distribution in the area of ​​the arc root, thereby minimizing opposing magnetic field forces.

[0063] Thanks to this technical solution, the system is particularly suitable for non-polarized DC circuit breakers. It is characterized by a simple structure and high cost-effectiveness and is specifically optimized for use in arc quenching systems. Note on the interpretation of the description

[0064] The above sections explain the basic principles, main features, and advantages of the present utility model. It is clear to those skilled in the art that the utility model is not limited to the embodiments mentioned. It can be implemented in other specific forms without departing from the spirit or the fundamental features of the invention.

[0065] The examples are therefore to be considered illustrative and not limiting. The scope of protection of the utility model is defined exclusively by the patent claims and not by the above description. The scope of protection includes all variations that fall within the meaning and scope of the elements mentioned in the patent claims. Additionally:

[0066] References to figures in the patent claims do not constitute a limitation.

[0067] Although the description explains various embodiments, each embodiment can be combined with others to create additional variants. These possibilities arise from the description as a whole and are understandable to a person skilled in the art.

[0068] The above content serves solely to illustrate the technical concepts of the utility model and does not limit its scope of protection. All technical ideas and modifications developed on this basis fall within the scope of protection of the utility model's patent claims.

Claims

[1] The double arc magnetic conductor blow-out arc system is characterized by in that it comprises a first magnetic conductor (1), a second magnetic conductor (2), a first permanent magnet (3), a second permanent magnet (4), a first arc-blocking wall (10) and a second arc-blocking wall (20). The first magnetic conductor (1) comprises a first magnetic conductor sidewall I (11), a first magnetic conductor sidewall II (12), and a first magnetic conductor connection base (13). The first magnetic conductor sidewall I (11) and the first magnetic conductor sidewall II (12) are parallel and symmetrical. The first magnetic conductor connection base (13) is connected to the first magnetic conductor sidewall I (11) and the first magnetic conductor sidewall II (12), respectively, to form a U-shaped structure, wherein the first polar surface of the first permanent magnet (3) is in contact with the outside of the first magnetic conductor connection base (13). The second magnetic conductor (2) comprises a second magnetic conductor sidewall I (21), a second magnetic conductor sidewall II (22), and a second magnetic conductor connection base (23), wherein the second magnetic conductor sidewall I (21) and the second magnetic conductor sidewall II (22) are parallel and symmetrical. The second magnetic conductor connection base (23) is connected to the second magnetic conductor sidewall I (21) and the second magnetic conductor sidewall II (22), respectively, to form a U-shaped structure, wherein the first polar surface of the second permanent magnet (4) is in contact with an inner side of the second magnetic conductor connection base (23). The U-shaped opening of the first magnetic conductor (1) is arranged at the static arc angle (8), and the U-shaped opening of the second magnetic conductor (2) is arranged at the dynamic arc angle (6). The U-shaped opening of the first magnetic conductor (1) is provided opposite the U-shaped opening of the second magnetic conductor (2). The arc quenching chamber (9) is provided between the dynamic arc angle (6) and the static arc angle (8). The static arc angle (8) is connected to a static contact (7). The dynamic arc angle (6) is connected to a dynamic contact (5), wherein the first magnetic conductor side wall I (11), the first magnetic conductor side wall II (12), the second magnetic conductor side wall I (21), and the second magnetic conductor side wall II (22) are located between the static arc angle (8) and the dynamic arc angle (6). The first arc-blocking wall I (10) is located on the same side of the first magnetic conductor sidewall I (11) and the second magnetic conductor sidewall I (21), while the second arc-blocking wall (20) is located on the same side of the first magnetic conductor sidewall II (12) and the second magnetic conductor sidewall II (22). The first arc-blocking wall (10) and the second arc-blocking wall (20) are used to separate the first magnetic conductor (1) and the second magnetic conductor (2) from the arc. [2] The double arc magnetic conductor blow-out arc system according to claim 1, is characterized by that the first polar surface of the first permanent magnet (3) has an opposite polarity to the first polar surface of the second permanent magnet (4). [3] The double arc magnetic conductor blow-out arc system according to claim 1 is characterized bythat the planes of symmetry of the first magnetic conductor (1), the first permanent magnet (3), the second magnetic conductor (2) and the second permanent magnet (4) coincide. [4] The double arc magnetic conductor blow-out arc system according to claim 1 is characterized by that the first magnetic conductor side wall I (11) and the second magnetic conductor side wall I (21) are arranged on the same side as the dynamic contact (5) and the static contact (7). The first magnetic conductor side wall II (12) and the second magnetic conductor side wall II (22) are arranged on the same side as the dynamic contact (5) and the static contact (7), wherein a gap is provided between the first magnetic conductor side wall I (11) and the second magnetic conductor side wall I (21). A gap is provided between the first magnetic conductor side wall II (12) and the second magnetic conductor side wall II (22). [5] The double arc magnetic conductor blow-out arc system according to claim 1 is characterized by in that the first magnetic conductor side wall I (11) and the first magnetic conductor side wall II (12) are each provided with a first arcuate section of the magnetic conductor (15). The first arcuate section of the magnetic conductor (15) extends from the region of the dynamic contact (5) and the static contact (7) in the direction of the arc extinguishing chamber (9). The first arcuate section of the magnetic conductor (15) is connected to the first magnetic conductor connection base (13) via a first magnetic conductor connection section (14). [6] The double arc magnetic conductor blow-out arc system according to claim 1, is characterized byin that the second magnetic conductor side wall I (21) and the second magnetic conductor side wall II (22) are both provided with a second arcuate section of the magnetic conductor (25), wherein the second arcuate section of the magnetic conductor (25) extends from the region of the dynamic contact (5) and the static contact (7) in the direction of the arc extinguishing chamber (9). The second arcuate section of the magnetic conductor (25) is connected to the second magnetic conductor connection base (23) via the second magnetic conductor connection section (24). [7] The double arc magnetic conductor blow-out arc system is according to claim 5 or 6, characterized bythat the first arcuate section of the magnetic conductor (15) of the first magnetic conductor side wall I (11) and the first magnetic conductor side wall II (12) runs parallel to the curvature of the static arc angle (8). The second arcuate section of the magnetic conductor (25) of the second magnetic conductor side wall I (21) and the second magnetic conductor side wall II (22) also runs parallel to the curvature of the dynamic arc angle (6). The first arcuate section of the magnetic conductor (15) of the first magnetic conductor side wall I (11) and the first magnetic conductor side wall II (12) runs parallel to the curvature of the second arcuate section of the magnetic conductor (25) of the second magnetic conductor side wall I (21) and the second magnetic conductor side wall II (22) and is parallel to the curvature of the dynamic arc angle (6). [8] The double arc magnetic conductor blow-out arc system according to claim 1 is characterized bythat the second polar surface of the second permanent magnet (4) is in contact with the dynamic arc angle (6), so that the second polar surface of the second permanent magnet (4) is in contact with the dynamic arc angle (6) via a ferromagnet. [9] The double arc magnetic conductor blow-out arc system according to claim 1 is characterized by that a gap is provided along the side wall plane between the first magnetic conductor side wall I (11) and the first magnetic conductor side wall II (12) and the static arc angle (8), wherein a gap is provided along the side wall plane between the second arcuate section of the magnetic conductor (25) of the second magnetic conductor side wall I (21) and the second magnetic conductor side wall II (22) and the dynamic arc angle (6). [10] The DC switch is characterized bythat it comprises a double-arc magnetic conductor blow-arc system according to one of claims 1 to 9.

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