A multi-chamber arc extinguishing device

Abstract

This application relates to the field of power transmission and distribution equipment technology, specifically to a multi-chamber arc extinguishing device, comprising a substrate, an arc extinguishing frame, and a first reinforcing column. The substrate has an axis arranged in a vertical direction, and the arc extinguishing frame is embedded in the substrate. The arc extinguishing frame includes multiple layers of arc extinguishing units arranged at intervals from top to bottom. Each arc extinguishing unit includes an open-ring structure consisting of a solid section and an open section. The solid section and the open section are arranged around the axis to form an open-ring structure. The open sections of at least two adjacent layers of arc extinguishing units are arranged vertically opposite each other, and the vertically aligned open sections form a channel through which casting material can continuously pass. During the casting of the substrate, a columnar casting body can be formed in this channel, and the reinforcing column forms a reinforcing core inside the columnar casting body, thereby enhancing the connection strength between adjacent layers of arc extinguishing units. The multi-chamber arc extinguishing device of this application improves the rigidity of the multi-chamber arc extinguishing device while ensuring compactness.

Description

Technical Field

[0001] This application relates to the field of power transmission and distribution equipment technology, specifically to a multi-chamber arc extinguishing device. Background Technology

[0002] Multi-chamber arc extinguishing devices are crucial for limiting lightning overvoltages and protecting the insulation of electrical equipment. They extinguish the electric arc by dividing it into multiple independent chambers and using gas jets to accelerate arc extinguishing. To improve arc extinguishing efficiency, the compact design of multi-chamber arc extinguishing devices has become an important development direction.

[0003] Currently, the mainstream structures of multi-chamber arc-extinguishing devices include vertical series and spiral series structures. The vertical series structure, as illustrated in Chinese invention patent application CN118155965A, involves alternating arrangements of a first conductor and an insulating shell from top to bottom within a columnar substrate. The insulating shell contains an arc-extinguishing cavity. This structure limits the number of arc-extinguishing cavities per unit height, requiring a relatively tall columnar substrate, which fails to meet the compact requirements of multi-chamber arc-extinguishing devices. In contrast, the spiral series structure, as illustrated in Chinese invention patent CN113054533B, uses several interconnected disc-shaped structural units within the columnar substrate as arc-extinguishing units, significantly increasing the chamber density and achieving a more compact structure.

[0004] However, in order to achieve the helical transmission of the electric arc, the spiral series structure requires each layer of arc-extinguishing unit to have both solid and open sections, with the open sections of upper and lower layers completely staggered. This results in the cured resin being separated by each solid section during epoxy resin casting to form a columnar matrix, preventing the columnar matrix from forming a continuous, integrated reinforcing structure. This structural defect leads to insufficient overall rigidity of the columnar matrix, making it prone to deformation when subjected to the impact of airflow within the arc-extinguishing chamber, directly affecting the stability of arc-extinguishing performance and the lifespan of the device. Summary of the Invention

[0005] Therefore, the purpose of this application is to provide a multi-chamber arc extinguishing device that has both good compactness and high rigidity.

[0006] The multi-chamber arc extinguishing device of this application includes:

[0007] The matrix has an axis arranged in the vertical direction;

[0008] An arc-extinguishing frame is embedded in the matrix; the arc-extinguishing frame includes multiple layers of arc-extinguishing units arranged at intervals from top to bottom; each arc-extinguishing unit includes a solid segment and an open segment, the solid segment and the open segment are arranged around the axis to form an open ring structure, and the open segments of at least two adjacent layers of the arc-extinguishing units are arranged vertically opposite each other.

[0009] A first reinforcing post is embedded in the matrix; the first reinforcing post passes through the upper and lower opposite opening sections.

[0010] As an optional solution, the opening segments of the arc-extinguishing units in each layer are arranged vertically opposite each other, and the first reinforcing column passes through all the opening segments.

[0011] As an optional solution, the solid segment includes a plurality of first arc-extinguishing shells and a plurality of first conductors, wherein the first arc-extinguishing shells and the first conductors are arranged alternately around the axis.

[0012] The first conductor includes a first type of conductor and a second type of conductor; in the same layer of the arc extinguishing unit, one of the first type of conductor and the second type of conductor is provided between two adjacent first arc extinguishing shells; at least one layer of the arc extinguishing unit is provided with the second type of conductor;

[0013] The second type of conductor includes a first spherical electrode, a second spherical electrode, and a conductive rod; in the circumferential direction of the arc extinguishing unit, there is a gap between the first spherical electrode and the second spherical electrode, and the conductive rod connects the first spherical electrode and the second spherical electrode.

[0014] As an optional solution, each of the arc-extinguishing units in each layer is provided with at least one of the second type of conductors.

[0015] As an optional solution, the intervals of at least two adjacent arc-extinguishing units are arranged vertically opposite each other.

[0016] As an optional solution, the multi-chamber arc extinguishing device further includes a second reinforcing column, which is embedded in the substrate; the second reinforcing column penetrates at least two vertically opposite intervals.

[0017] As an optional solution, each layer of the arc extinguishing unit is provided with three second-type conductors, and the intervals between the three second-type conductors are a first interval, a second interval, and a third interval, respectively. The first intervals of each layer of the arc extinguishing unit are arranged vertically opposite each other, the second intervals of each layer of the arc extinguishing unit are arranged vertically opposite each other, and the third intervals of each layer of the arc extinguishing unit are arranged vertically opposite each other.

[0018] There are three second reinforcing columns, which respectively penetrate the entire first interval, the entire second interval, and the entire third interval vertically.

[0019] Alternatively, the three second reinforcing columns and the first reinforcing column are arranged at uniform intervals around the axis.

[0020] As an option, the material of the first reinforcing column includes at least one of polyetheretherketone, polyimide, and fiber-reinforced composite materials.

[0021] Alternatively, the matrix material may be a transparent epoxy resin.

[0022] Compared with the prior art, the beneficial effects of this application are as follows:

[0023] The multi-chamber arc-extinguishing device of this application includes a substrate, an arc-extinguishing frame, and a first reinforcing column. The substrate has an axis arranged vertically, and the arc-extinguishing frame is embedded in the substrate. The arc-extinguishing frame includes multiple layers of arc-extinguishing units arranged at intervals from top to bottom. Each arc-extinguishing unit is an open ring structure with a solid section and an open section. The open sections of at least two adjacent arc-extinguishing units are arranged vertically opposite each other, and the vertically aligned open sections form a channel through which the casting material can continuously pass. During the casting of the substrate, a columnar casting body can be formed within this channel, connecting the discontinuous casting body parts that were originally separated by the arc-extinguishing units into a whole. The reinforcing column forms a reinforcing core inside the columnar casting body, enhancing the connection strength between adjacent arc-extinguishing units. Therefore, the multi-chamber arc-extinguishing device of this application improves the rigidity of the multi-chamber arc-extinguishing device while ensuring compactness. Attached Figure Description

[0024] Figure 1 This is an isometric view of the arc-extinguishing frame of the multi-chamber arc-extinguishing device of this application;

[0025] Figure 2 This is a top view of the multi-chamber arc extinguishing device of this application;

[0026] Figure 3 This is an isometric drawing of the multi-chamber arc-extinguishing device of this application;

[0027] Figure 4 This is a top view of the arc-extinguishing unit;

[0028] Figure 5 This is a side view of the arc-extinguishing frame of the multi-chamber arc-extinguishing device of this application;

[0029] Figure 6 This is a schematic diagram of the current flow path in the multi-chamber arc extinguishing device of this application;

[0030] In the figure, Z is the axis, 1 is the substrate, 2 is the arc-extinguishing frame, 21 is the arc-extinguishing unit, 211 is the solid segment, 2111 is the first arc-extinguishing shell, 2112 is the first type of conductor, 2113 is the second type of conductor, 21131 is the first spherical electrode, 21132 is the second spherical electrode, 21133 is the conductive rod, 21134 is the gap, 212 is the open segment, 22 is the second conductor, 23 is the second arc-extinguishing shell, 3 is the first reinforcing column, and 4 is the second reinforcing column. Detailed Implementation

[0031] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0032] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. It should be understood that the terms "first," "second," etc., are used in this application to describe various information, but this information should not be limited to these terms, and these terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0033] like Figures 1 to 6 As shown, a preferred embodiment of the multi-chamber arc-extinguishing device of this application includes a base 1, an arc-extinguishing frame 2, and a first reinforcing column 3. The base 1 has an axis Z arranged in the vertical direction, and the arc-extinguishing frame 2 is embedded in the base 1. The arc-extinguishing frame 2 includes multiple layers of arc-extinguishing units 21 arranged alternately from top to bottom. The arc-extinguishing unit 21 is an open ring structure with a solid section 211 and an open section 212. The solid section 211 includes multiple first arc-extinguishing shells 2111 and multiple first conductors. The first arc-extinguishing shells 2111 and the first conductors are arranged alternately around the axis Z. The open sections 212 of at least two adjacent layers of arc-extinguishing units 21 are arranged vertically opposite each other. The vertically aligned open sections 212 form a channel through which the casting material can be continuously passed. During the subsequent casting process, a columnar casting body can be formed in the channel. The columnar casting body connects the discontinuous casting body parts that were originally separated by the arc-extinguishing units 21 into a whole. The reinforcing column forms a reinforcing core inside the columnar casting body, which enhances the connection strength between the two adjacent arc extinguishing units 21 of the substrate 1; therefore, the multi-chamber arc extinguishing device of this application improves the rigidity of the multi-chamber arc extinguishing device while ensuring compactness.

[0034] Furthermore, the opening segments 212 of each layer of arc-extinguishing unit 21 are arranged vertically opposite each other, and the first reinforcing column 3 penetrates through all the opening segments 212. Specifically, each layer of arc-extinguishing unit 21 has one opening segment 212, and the opening segments 212 of each layer of arc-extinguishing unit 21 are arranged vertically opposite each other and spaced apart. This arrangement allows the first reinforcing column 3 to penetrate through all the opening segments 212, thereby forming a continuous and stable reinforcement path along the height direction of the entire substrate 1. This further increases the stiffness of the substrate 1 and avoids deformation of the substrate 1.

[0035] In this embodiment, as Figure 4 As shown, the first conductor includes a first type of conductor 2112 and a second type of conductor 2113; in the same layer of arc-extinguishing unit 21, one of the first type of conductor 2112 and the second type of conductor 2113 is provided between two adjacent first arc-extinguishing shells 2111; at least one layer of arc-extinguishing unit 21 provides a second type of conductor 2113; the second type of conductor 2113 includes a first spherical electrode 21131, a second spherical electrode 21132, and a conductive rod 21133; in the circumferential direction of the arc-extinguishing unit 21, there is a gap 21134 between the first spherical electrode 21131 and the second spherical electrode 21132, and the two ends of the conductive rod 21133 are respectively fixedly connected to the first spherical electrode 21131 and the second spherical electrode 21132. The conductive rod 21133 has a certain rigidity, which enables the circumferential direction of the arc-extinguishing unit 21 to be rigid, thereby enhancing the overall rigidity of the multi-chamber arc-extinguishing device.

[0036] Specifically, the first conductor includes two main categories: first type conductor 2112 and second type conductor 2113. Inside any arc-extinguishing unit 21 on the same layer, between every two adjacent first arc-extinguishing shells 2111, one of these two types of conductors is arranged, that is, either first type conductor 2112 or second type conductor 2113. They are arranged alternately or as needed to achieve effective current conduction and arc extinguishing functions. It should be noted that in all the arc-extinguishing units 21, at least one layer has a second type of conductor 2113. In the circumferential direction of the arc-extinguishing unit 21, the first spherical electrode 21131 and the second spherical electrode 21132 are not closely adjacent, but maintain a certain distance 21134. This distance 21134 forms another channel through which the casting material can continuously pass. When molding the substrate 1, a columnar casting body can be formed in this distance 21134. The columnar casting body passes through the arc-extinguishing unit 21 layer from top to bottom. The columnar casting body forms another reinforcement point in addition to the opening section 212. Therefore, the setting of the second type of conductor 2113 can enhance the connection strength of the substrate 1 at the adjacent arc-extinguishing unit 21 layer.

[0037] In this embodiment, each layer of arc-extinguishing unit 21 is provided with at least one second-type conductor 2113. Along the entire height of the multi-chamber arc-extinguishing device, each layer of arc-extinguishing unit 21 adds one or more reinforcement points formed by the second-type conductor 2113. These reinforcement points, in conjunction with the reinforcement pillars formed by the opening section 212, form a multi-point distributed reinforcement network inside the arc-extinguishing device, further improving the stiffness of the substrate 1.

[0038] In this embodiment, at least two layers of adjacent arc-extinguishing units 21 are arranged vertically with their spacing 21134 facing each other. Specifically, in this embodiment, the projections of the second type of conductor 2113 of at least two layers of adjacent arc-extinguishing units 21 in the vertical direction overlap. If the projections of the second type of conductor 2113 of adjacent arc-extinguishing units 21 in the vertical direction are completely staggered, the spacing 21134 of each layer of arc-extinguishing units 21 forms dispersed reinforcement points. In this embodiment, at least two layers of adjacent arc-extinguishing units 21 have their spacing 21134 aligned vertically, which means that the spacing 21134 of adjacent arc-extinguishing units 21 achieves vertical penetration. This makes the reinforcement points formed by the second type of conductor 2113 extend longer in the height direction, pass through more arc-extinguishing units 21, and have a better reinforcement effect.

[0039] In this embodiment, the multi-chamber arc-extinguishing device further includes a second reinforcing column 4, which is embedded within the substrate 1. The second reinforcing column 4 penetrates at least two vertically opposed intervals 21134. The second reinforcing column 4 is made of a material with higher strength than the substrate 1. In this embodiment, the material used for the second reinforcing column 4 includes at least one of polyetheretherketone, polyimide, and fiber-reinforced composite materials. After the second reinforcing column 4 is installed, this application provides a quadruple reinforcement structure for the substrate 1. The first reinforcement structure is a casting body that penetrates vertically through the arc-extinguishing unit 21 within the opening segment 212; the second reinforcement structure is the first reinforcing column 3 within the opening segment 212; the third reinforcement structure is the casting body within the intervals 21134 of the second type of conductor 2113; and the fourth reinforcement structure is the second reinforcing column 4 within the intervals 21134 of the second type of conductor 2113. This quadruple reinforcement structure greatly increases the stiffness of the substrate 1.

[0040] Furthermore, in this embodiment, each layer of arc-extinguishing unit 21 is provided with three second-type conductors 2113. The intervals 21134 between the three second-type conductors 2113 are respectively the first interval, the second interval, and the third interval. The first intervals of each layer of arc-extinguishing unit 21 are arranged vertically opposite each other, the second intervals of each layer of arc-extinguishing unit 21 are arranged vertically opposite each other, and the third intervals of each layer of arc-extinguishing unit 21 are arranged vertically opposite each other. There are three second reinforcing pillars 4, which penetrate all the first intervals, all the second intervals, and all the third intervals vertically. The three second reinforcing pillars 4 are distributed circumferentially on the substrate 1, and all three second reinforcing pillars 4 are arranged on the radially outer part of the substrate 1, that is, on the edge of the substrate 1. This arrangement makes the distance between each second reinforcing pillar 4 and the axis Z of the substrate 1 larger, which is more conducive to improving the bending resistance of the substrate 1. The first reinforcing pillar 3 is also located on the edge of the substrate 1.

[0041] In this embodiment, three second reinforcing columns 4 and one first reinforcing column 3 are arranged at uniform intervals around axis Z. The three second reinforcing columns 4 and one first reinforcing column 3 are located at the four quadrant points of the substrate 1, making the stiffness distribution of the substrate 1 more uniform.

[0042] In this embodiment, the material of the first reinforcing column 3 includes at least one of polyetheretherketone, polyimide, and fiber-reinforced composite materials. The material of the matrix 1 is transparent epoxy resin.

[0043] In this embodiment, adjacent arc-extinguishing units 21 are connected by alternately arranged second conductors 22 and second arc-extinguishing shells 23, thereby enabling the upper and lower arc-extinguishing units 21 to conduct to each other. Both the first arc-extinguishing shell 2111 and the second arc-extinguishing shell 23 are made of insulating material. The first arc-extinguishing shell 2111 has a necked section in the middle, with its diameter gradually increasing at both ends. The end of the first arc-extinguishing shell 2111 facing the central axis of the base 1 is closed, while the end facing away from the central axis of the base 1 has an opening flush with the outer periphery of the base 1. The inner cavity of the first arc-extinguishing shell 2111 forms an arc-extinguishing chamber, through which the high-pressure gas flows out. The structure of the second arc-extinguishing shell 23 is the same as that of the first arc-extinguishing shell 2111. Both the second conductor 22 and the first type of conductor 2112 are spherical electrodes. The current flow during the arc-extinguishing process in the multi-chamber arc-extinguishing device of this embodiment is as follows: Figure 6 As shown, the current flows from top to bottom through each arc-extinguishing unit 21, and flows from the high-voltage end to the low-voltage end.

[0044] In summary, the multi-chamber arc extinguishing device of this application includes a base 1, an arc extinguishing frame 2, and a first reinforcing column 3. The base 1 has an axis Z arranged in the vertical direction, and the arc extinguishing frame 2 is embedded in the base 1. The arc extinguishing frame 2 includes multiple layers of arc extinguishing units 21 arranged sequentially from top to bottom. Each layer of arc extinguishing unit 21 includes multiple first arc extinguishing shells 2111 and first conductors. Within the same layer of arc extinguishing unit 21, the first arc extinguishing shells 2111 and the first conductors are arranged alternately around the axis Z to form an open ring structure with solid segments 211 and open segments 212. The open segments 212 of at least two adjacent layers of arc extinguishing units 21 are arranged vertically opposite each other, and the vertically aligned open segments 212 form a channel through which the casting material can be continuously passed. During the subsequent casting process, a columnar casting body can be formed in this channel, and the columnar casting body connects the discontinuous casting body parts that were originally separated by the arc extinguishing units 21 into a whole. The reinforcing column forms a reinforcing core inside the columnar casting body, which enhances the connection strength between the two adjacent arc extinguishing units 21 of the substrate 1; therefore, the multi-chamber arc extinguishing device of this application improves the rigidity of the multi-chamber arc extinguishing device while ensuring compactness.

[0045] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A multi-chamber arc extinguishing device, characterized in that, include: The substrate (1) has an axis (Z) arranged in the vertical direction; An arc-extinguishing frame (2) is embedded in the substrate (1); the arc-extinguishing frame (2) includes multiple layers of arc-extinguishing units (21) arranged sequentially from top to bottom; the arc-extinguishing unit (21) includes a solid segment (211) and an open segment (212), the solid segment (211) and the open segment (212) are arranged around the axis (Z) to form an open ring structure, and the open segments (212) of at least two adjacent arc-extinguishing units (21) are arranged vertically opposite each other; The first reinforcing post (3) is embedded in the substrate (1); the first reinforcing post (3) passes through the upper and lower opposite opening sections (212). The solid segment (211) includes a plurality of first arc-extinguishing shells (2111) and a plurality of first conductors, the first arc-extinguishing shells (2111) and the first conductors being arranged alternately around the axis (Z); The first conductor includes a first type of conductor (2112) and a second type of conductor (2113); in the same layer of the arc extinguishing unit (21), one of the first type of conductor (2112) and the second type of conductor (2113) is provided between two adjacent first arc extinguishing shells (2111); at least one layer of the arc extinguishing unit (21) is provided with the second type of conductor (2113). The second type of conductor (2113) includes a first spherical electrode (21131), a second spherical electrode (21132), and a conductive rod (21133); in the circumferential direction of the arc extinguishing unit (21), there is a gap (21134) between the first spherical electrode (21131) and the second spherical electrode (21132), and the conductive rod (21133) connects the first spherical electrode (21131) and the second spherical electrode (21132). Each of the arc-extinguishing units (21) in each layer is provided with at least one of the second type of conductors (2113). The intervals (21134) of at least two adjacent arc-extinguishing units (21) are arranged vertically opposite each other.

2. The multi-chamber arc-extinguishing device according to claim 1, characterized in that, The opening segments (212) of each layer of the arc extinguishing unit (21) are arranged vertically opposite each other, and the first reinforcing column (3) penetrates all the opening segments (212).

3. The multi-chamber arc-extinguishing device according to claim 1, characterized in that, The multi-chamber arc extinguishing device further includes a second reinforcing column (4), which is embedded in the substrate (1); the second reinforcing column (4) penetrates at least two vertically opposite intervals (21134).

4. The multi-chamber arc-extinguishing device according to claim 3, characterized in that, Each layer of the arc-extinguishing unit (21) is provided with three second-type conductors (2113). The intervals (21134) between the three second-type conductors (2113) are the first interval, the second interval, and the third interval, respectively. The first intervals of each layer of the arc-extinguishing unit (21) are arranged vertically opposite each other, the second intervals of each layer of the arc-extinguishing unit (21) are arranged vertically opposite each other, and the third intervals of each layer of the arc-extinguishing unit (21) are arranged vertically opposite each other. There are three second reinforcing columns (4), and the three second reinforcing columns (4) respectively penetrate the entire first interval, the entire second interval and the entire third interval vertically.

5. The multi-chamber arc-extinguishing device according to claim 4, characterized in that, The three second reinforcing columns (4) and the first reinforcing column (3) are arranged at uniform intervals around the axis (Z).

6. The multi-chamber arc-extinguishing device according to claim 1, characterized in that, The material of the first reinforcing column (3) includes at least one of polyether ether ketone, polyimide and fiber-reinforced composite materials.

7. The multi-chamber arc-extinguishing device according to claim 1, characterized in that, The current flows in opposite directions in the two adjacent arc-extinguishing units (21).

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