Partition plate assembly and circuit breaker

Abstract

The utility model provides a partition plate assembly and a circuit breaker, and relates to the technical field of electrical connection devices. The partition plate assembly comprises a partition plate body and a channel partition plate fixedly connected with the partition plate body, the partition plate body comprises a first supporting plate and a second supporting plate, the first supporting plate is provided with a first side plate and a first transverse plate fixedly connected with the first side plate, and the first side plate and the first transverse plate form an L shape; the second supporting plate is provided with a second side plate and a second transverse plate fixedly connected with the second side plate, the second side plate and the second transverse plate form an L shape, the channel partition plate comprises a first partition plate structure and a second partition plate structure, and the first partition plate structure and the second partition plate structure are oppositely arranged between the first side plate and the second side plate. The first partition plate structure and the second partition plate structure divide the space between the first side plate and the second side plate into a first channel area, a second channel area and a third channel area, the channel partition plate divides the space into three channel areas, different phase conductor assemblies can be isolated, the structure is simple, and the assembling efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical connection devices, and in particular to a partition assembly and a circuit breaker. Background Art

[0002] Residual current circuit breakers (RCCBs) play a crucial role in the electrical equipment industry. Their primary function is to quickly disconnect the circuit when residual current (such as leakage) is detected, protecting personnel and electrical equipment. However, due to their unique operating principle, RCCBs have stricter phase-to-phase insulation requirements than traditional molded case circuit breakers.

[0003] In the design of residual current circuit breakers, each phase conductor needs to pass through the zero-sequence transformer simultaneously. This places the phase conductors in close proximity around the transformer, increasing the risk of phase-to-phase short circuits. The prior art provides an insulation method that includes wrapping the conductors with insulating tape and physically isolating them using multiple insulating partitions to increase creepage distance and thus improve insulation performance. Furthermore, insulating partitions are placed between the phases of the base to prevent interphase conduction due to misoperation or arcing. While these measures improve insulation performance to a certain extent, they also increase product complexity and cost.

[0004] Therefore, the current insulation method of residual current protection circuit breakers has some limitations, such as a large number of components, a complex structure, and little consideration of the positioning and stability of the transformer, which affects the output performance of the transformer and the overall insulation effect. Utility Model Content

[0005] The present application provides a partition assembly and a circuit breaker to solve the problems of requiring additional materials and high manufacturing costs, as well as the positioning and stability of the mutual inductor.

[0006] In the first aspect, the present application provides a partition assembly, which is applied to a circuit breaker, comprising: a partition body and a channel partition fixedly connected to the partition body, the partition body comprising a first support plate and a second support plate, the first support plate and the second support plate are arranged opposite to each other, the first support plate has a first side plate and a first transverse plate fixedly connected to the first side plate, and the first side plate and the first transverse plate form an L-shape, the second support plate has a second side plate and a second transverse plate fixedly connected to the second side plate, and the second side plate and the second transverse plate form an L-shape, wherein the zero-sequence transformer is suitable for being placed on the first transverse plate and the second transverse plate; the channel partition comprises a first partition structure and a second partition structure, the first partition structure and the second partition structure are arranged oppositely between the first side plate and the second side plate, so that the first partition structure and the second partition structure divide the space between the first side plate and the second side plate into a first channel area, a second channel area and a third channel area, the first partition structure and the second partition structure are at least partially located on the side where the first transverse plate and the second transverse plate are located, so that when the zero-sequence transformer is placed on the first transverse plate and the second transverse plate, the channel partition can pass through the zero-sequence transformer.

[0007] Through the above scheme, the first support plate and the second support plate are arranged relative to each other, and an L-shaped structure is formed by the first side plate and the second side plate and the corresponding cross plate, which enhances the stability of the partition body. In addition, by designing the first cross plate and the second cross plate into an L-shape, the space can be more effectively utilized, providing a suitable placement position for the zero-sequence mutual inductor, so that the zero-sequence mutual inductor plays a positioning role and improves the performance stability of the zero-sequence mutual inductor. At the same time, the channel partition divides the space into three channel areas, which helps to isolate different phase conductor assemblies. For example, the A-phase conductor assembly, the B-phase conductor assembly and the C-phase conductor assembly are installed in different channels respectively, so that there is no need to add additional insulating partitions or wrap the A-phase conductor assembly, the B-phase conductor assembly and the C-phase conductor assembly with insulating tape, that is, the A-phase conductor assembly, the B-phase conductor assembly and the C-phase conductor assembly can be separated and insulated, improving the organization and maintenance convenience inside the circuit breaker. These beneficial effects jointly improve the performance and reliability of the circuit breaker, and may also simplify the manufacturing and maintenance process.

[0008] In a possible design, the first partition structure includes a first longitudinal protective plate, a first middle plate connected between the first side plate and the first longitudinal protective plate, a first upper top plate connected to the top end of the first longitudinal protective plate and part of the first middle plate, and a first lower top plate connected to the bottom end of the first longitudinal protective plate and part of the first middle plate; the second partition structure includes a second longitudinal protective plate, a second middle plate connected between the second side plate and the second longitudinal protective plate, a second upper top plate connected to the top end of the second longitudinal protective plate and part of the second middle plate, and a second lower top plate connected to the bottom end of the second longitudinal protective plate and part of the second middle plate; the first longitudinal protective plate and the second longitudinal protective plate are arranged parallel to each other between the first side plate and the second side plate, the first upper top plate and the first lower top plate extend from the position of the first longitudinal protective plate toward the direction of the first side plate, and the first upper top plate, the first middle plate, the first longitudinal protective plate and the first lower top plate enclose a first channel area; the second upper top plate and the second lower top plate extend from the position of the second longitudinal protective plate toward the direction of the second side plate, and the second upper top plate, the second middle plate, the second longitudinal protective plate and the second lower top plate enclose a third channel area.

[0009] The above solution, with the first upper plate, first middle plate, first longitudinal protective plate, and first lower plate enclosing the first channel area, and the second upper plate, second middle plate, second longitudinal protective plate, and second lower plate enclosing the third channel area, clearly demarcates the first and third channel areas, making the layout of components within the circuit breaker more orderly and effectively utilizing space. Suitable installation locations are provided for components within the circuit breaker. The clear demarcation of channel areas and the robust structural design facilitate maintenance and overhaul, allowing staff to more easily access and inspect key components of the circuit breaker. Reasonable structural design may also help improve heat dissipation within the circuit breaker, thereby extending the service life of the equipment.

[0010] In a possible design, a third upper top plate is further included, which is connected between the first upper top plate and the second upper top plate and is located at the upper ends of the first longitudinal protection plate and the second longitudinal protection plate.

[0011] Through the above solution, the third top plate connects the first and second top plates and is located above the first and second longitudinal protective plates. This design enhances the integrity and stability of the entire partition structure. Furthermore, when used in a four-pole residual current circuit breaker, it also includes an N-phase conductor assembly, which can be positioned above the third top plate. The first, second, and third top plates thus work together to form an insulating barrier, isolating and insulating the N-phase conductor assembly during installation. Therefore, the third top plate acts as an additional barrier, preventing accidental contact with sensitive or hazardous components and contributing to improved circuit breaker safety.

[0012] In one possible design, a first connecting structure is provided between the first horizontal plate and the first lower top plate, the first connecting structure is perpendicular to the first support plate, and a first avoidance groove is provided on the first connecting structure; a second connecting structure is provided between the second horizontal plate and the second lower top plate, the second connecting structure is perpendicular to the second support plate, and a second avoidance groove is provided on the second connecting structure; the first avoidance groove and the second avoidance groove are symmetrical and suitable for the installation of the conductor assembly.

[0013] Through the above solution, the first connection structure and the second connection structure are respectively perpendicular to the corresponding support plates, which can provide additional support and stability, thereby enhancing the mechanical strength of the entire assembly. At the same time, the existence of the first connection structure and the second connection structure can increase the surface area of the entire partition assembly and increase the creepage distance of the conductive particles, thereby improving the insulation effect of the partition assembly. The design of the first avoidance groove and the second avoidance groove takes into account the installation requirements of the conductor assembly. The design of the slot position allows the conductor assembly to be installed smoothly, improving the convenience and efficiency of the installation process. The design of the first avoidance groove and the second avoidance groove may make space utilization more reasonable, leaving the necessary installation space for the conductor assembly without sacrificing the functions of other components or structures. Through precise positioning and stable installation, the connection of the conductor assembly may be more reliable, which helps to improve the stability and performance of the entire electrical system.

[0014] In one possible design, a first placement structure is provided above the first horizontal plate, and the first placement structure is composed of a first placement plate fixed on the first horizontal plate and a second placement plate fixed at the bottom of the first connecting structure; a second placement structure is provided above the second horizontal plate, and the second placement structure is composed of a third placement plate fixed on the second horizontal plate and a fourth placement plate fixed at the bottom of the second connecting structure.

[0015] Through the above scheme, the zero-sequence mutual inductor can be placed more stably through the first placement structure and the second placement structure. At the same time, the first placement structure is composed of a first placement plate fixed on the first horizontal plate and a second placement plate fixed at the bottom of the first connecting structure, and the second placement structure is composed of a third placement plate fixed on the second horizontal plate and a fourth placement plate fixed at the bottom of the second connecting structure, which can increase the surface area of the entire partition assembly and increase the creepage distance of the conductive particles, thereby improving the insulation effect of the partition assembly.

[0016] In one possible design, the end of the first transverse plate facing away from the first side plate protrudes relative to the end of the first placement plate facing away from the first side plate, and is a first protrusion, and the first protrusion is suitable for assembly with the base; the end of the second transverse plate facing away from the second side plate protrudes relative to the end of the third placement plate facing away from the second side plate, and is a second protrusion, and the second protrusion is suitable for assembly with the base.

[0017] Through this solution, the protrusion design provides precise assembly positioning points for the base, ensuring assembly accuracy and consistency, thereby improving the stability and reliability of the overall structure. The design of the first and second protrusions simplifies the assembly process because they can be directly aligned and fixed to the base, reducing the need for adjustment and alignment during assembly. This improves the assembly accuracy, structural strength, and ease of assembly of the component.

[0018] In a possible design, a third connecting structure is provided above the third upper top plate, and the third connecting structure is fixed between the first side plate and the second side plate.

[0019] With this solution, the third connecting structure is located between the first and second side panels. This design provides an additional fixing point for the base assembly, thereby enhancing the stability of the entire structure and the reliability of the assembly. Furthermore, the third connecting structure increases the surface area of the entire separator assembly, thereby increasing the creepage distance of the conductive particles and improving the insulation performance of the separator assembly.

[0020] In a possible design, a protection plate is further included on the third connecting structure, and the protection plate can support the zero-sequence mutual inductor placed on the first transverse plate and the second transverse plate.

[0021] Through the above solution, the presence of the protection plate can make the assembly of the zero-sequence transformer easier, because it provides a flat and fixed contact surface, and can support the zero-sequence transformer, making the installation of the zero-sequence transformer more stable. At the same time, the protection plate can provide additional mechanical protection for the top of the zero-sequence transformer to prevent damage to the transformer caused by external factors such as impact, vibration or wear.

[0022] In a possible design, the partition body and the channel partition are formed integrally.

[0023] The above-mentioned one-piece design reduces assembly steps. It can be formed in one go during the production process, thereby improving production efficiency and manufacturing speed. Since the partition body and channel partition are molded in one piece, this can mean a more stable overall structure, reducing assembly errors and connection defects, and eliminating assembly gaps or additional space requirements, thereby improving product durability and reliability. Furthermore, the one-piece design simplifies the installation process, as the partition body and channel partition do not need to be installed separately, which can make installation faster and more convenient.

[0024] In the second aspect, the present application provides a circuit breaker, comprising a zero-sequence transformer, a three-phase conductor assembly and any of the above-mentioned partition assemblies, the zero-sequence transformer is placed on the first transverse plate and the second transverse plate, and the three-phase conductor assembly passes through the first channel area, the second channel area and the third channel area respectively.

[0025] The above-mentioned second aspect and the possible beneficial effects of the above-mentioned second aspect can refer to the beneficial effects brought about by the above-mentioned first aspect and the possible implementation methods of the first aspect, and will not be repeated here.

[0026] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A schematic structural diagram of a partition assembly provided in one embodiment of the present application.

[0029] Figure 2 for Figure 1 A front view of the bulkhead assembly is provided.

[0030] Figure 3 A schematic structural diagram of a zero-sequence mutual inductor placed on a partition assembly provided in one embodiment of the present application.

[0031] Figure 4 This is a schematic diagram of placing a three-phase conductor assembly and a zero-sequence mutual inductor on a partition assembly provided in one embodiment of the present application.

[0032] Figure 5 for Figure 4 Top view of .

[0033] Figure 6 for Figure 4 A schematic diagram of a plug-in structure is provided on the partition assembly.

[0034] Description of reference numerals:

[0035] 111, first side plate; 121, first transverse plate; 112, second side plate; 122, second transverse plate; 400, zero sequence transformer; 131, first channel area; 132, second channel area; 133, third channel area; 210, first longitudinal protection plate; 211, first middle plate; 212, first upper plate; 213, first lower plate; 220, second longitudinal protection plate; 221, second middle plate; 222, second upper plate; 223, second lower plate; 230, third upper plate; 141, first First connection structure; 151, first avoidance groove; 142, second connection structure; 152, second avoidance groove; 171, first placement plate; 181, second placement plate; 172, third placement plate; 182, fourth placement plate; 301, first protrusion; 302, second protrusion; 191, first upper edge; 192, first rear edge; 193, first lower edge; 194, second rear edge; 195, second lower edge; 160, third connection structure; 161, protective plate; 500, plug-in structure. 401, A-phase conductor assembly; 402, B-phase conductor assembly; 403, C-phase conductor assembly. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0038] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists, A and B exist, and B exists. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0040] The directional words appearing in the following description are all directions shown in the drawings, and do not limit the specific structure of the partition assembly of this application. For example, in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application.

[0041] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0042] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through screws, bolts, or other barrier; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as a connection formed by welding, bonding, or integral molding. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] A residual current circuit breaker (RCCB), also known as a leakage circuit breaker, is a device used to detect residual current and cut off power supply when the current exceeds a preset value to ensure personal and equipment safety.

[0045] A zero-sequence transformer (ZST) is a device used for detection and protection in power systems. It specifically detects the vector sum of the three-phase currents, also known as the zero-sequence current. Under normal circumstances, the vector sum of the three-phase currents is zero, and the ZST generates no output signal. However, when a system fault occurs, such as a single-phase ground fault, a zero-sequence current is generated. This induces a current in the secondary winding of the ZST, which activates relays or other protective devices, thereby protecting the power system. The ZST operates based on Kirchhoff's current law, which states that the algebraic sum of the currents flowing into any node in a circuit is equal to zero. In a three-phase power system, under normal circumstances, the vector sum of the phase currents is zero, and the secondary winding of the ZST outputs no signal. However, when a ground fault occurs, the vector sum of the phase currents is non-zero. This fault current generates magnetic flux in the toroidal core of the ZST, inducing a voltage on the secondary winding, triggering the actuator and tripping the trip device, switching the power supply network and achieving ground fault protection.

[0046] In the design of residual current protection circuit breakers, the conductors of each phase need to pass through the zero-sequence transformer at the same time, which makes the conductors of each phase close to each other around the transformer, thereby increasing the risk of phase-to-phase short circuit.

[0047] In related technologies, conductors are wrapped with insulating tape and then separated and insulated with plastic partitions. Furthermore, insulating partitions are placed between the phases of the base. While these measures improve insulation performance to a certain extent, they also increase product complexity and cost. Furthermore, they provide little consideration for the positioning and stability of the transformer, impacting its output performance and overall insulation effectiveness.

[0048] In view of this, the embodiments of the present application provide a partition assembly and a circuit breaker. The L-shaped structure formed by the first and second side plates and corresponding transverse plates enhances the stability of the partition body. By designing the first and second transverse plates into an L-shape, space can be more efficiently utilized, providing a suitable placement location for the zero-sequence transformer, thereby positioning the zero-sequence transformer and improving its performance stability. At the same time, the channel partition divides the space into three channel areas, helping to separate and insulate the A-phase conductor assembly, the B-phase conductor assembly, and the C-phase conductor assembly, thereby improving the organization and maintenance convenience within the circuit breaker.

[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0050] Figure 1 A schematic structural diagram of a partition assembly provided in one embodiment of the present application. Figure 2 for Figure 1 A front view of the bulkhead assembly is provided. Figure 3This is a schematic diagram of a structure in which a zero-sequence mutual inductor is placed on a partition assembly provided in one embodiment of the present application. Figure 1 、 Figure 2 and Figure 3 As shown, the partition assembly is applied to a circuit breaker, and the partition assembly includes a partition body and a channel partition fixedly connected to the partition body.

[0051] In this embodiment, the partition assembly is applied to a residual current protection circuit breaker. The residual current protection circuit breaker includes an A-phase conductor assembly, a B-phase conductor assembly, a C-phase conductor assembly, an N-phase conductor assembly, and a zero-sequence transformer. The A-phase conductor assembly, the B-phase conductor assembly, the C-phase conductor assembly, and the N-phase conductor assembly pass through the zero-sequence transformer 400.

[0052] The partition body includes a first support plate and a second support plate, which are arranged opposite each other. The first support plate has a first side plate 111 and a first transverse plate 121 fixedly connected to the first side plate 111, and the first side plate 111 and the first transverse plate 121 form an L-shape. The second support plate has a second side plate 112 and a second transverse plate 122 fixedly connected to the second side plate 112, and the second side plate 112 and the second transverse plate 122 form an L-shape. The zero-sequence transformer 400 is preferably placed on the first transverse plate 121 and the second transverse plate 122. The first and second support plates are arranged opposite each other, and the L-shaped structure formed by the first and second side plates 111, 112, and the corresponding transverse plates enhances the stability of the partition body. Moreover, by designing the first and second transverse plates 121, 122 into an L-shape, space can be more efficiently utilized, providing a suitable placement position for the zero-sequence transformer 400, thereby positioning the zero-sequence transformer 400 and improving the performance stability of the zero-sequence transformer 400.

[0053] The channel partition includes a first partition structure and a second partition structure, and the first partition structure and the second partition structure are relatively arranged between the first side plate 111 and the second side plate 112, so that the first partition structure and the second partition structure divide the space between the first side plate 111 and the second side plate 112 into a first channel area 131, a second channel area 132 and a third channel area 133. The first partition structure and the second partition structure are at least partially located on the side where the first transverse plate 121 and the second transverse plate 122 are located, so that when the zero-sequence transformer 400 is placed on the first transverse plate 121 and the second transverse plate 122, the channel partition can pass through the zero-sequence transformer 400.

[0054] Figure 4 This is a schematic diagram of placing a three-phase conductor assembly and a zero-sequence mutual inductor 400 on a partition assembly provided in one embodiment of the present application. Figure 5 for Figure 4 Please refer to the top view of Figure 4 and Figure 5The channel partitions divide the space between the first support plate and the second support plate into three channel areas, helping to isolate different phase conductor assemblies. For example, the A-phase conductor assembly 401, the B-phase conductor assembly 402, and the C-phase conductor assembly 403 can be installed through different channels. This eliminates the need for additional insulating partitions and the need to wrap insulating tape around the A-phase conductor assembly 401, the B-phase conductor assembly 402, and the C-phase conductor assembly 403. This allows the A-phase conductor assembly 401, the B-phase conductor assembly 402, and the C-phase conductor assembly 403 to be separated and insulated, improving the organization and maintenance convenience of the circuit breaker. These benefits enhance the performance and reliability of the circuit breaker while also simplifying the manufacturing and maintenance processes.

[0055] In this embodiment, the partition body and the channel partition are made of insulating materials, such as epoxy resin and alkali-free glass fiber cloth impregnated with pressure, dried and solidified, and have good insulation properties.

[0056] In this embodiment, the partition body and the channel partition are integrally formed. This integrated structure provides a more stable structure, reduces assembly errors and connection defects, and eliminates assembly gaps or the need for additional space, thereby improving product durability and reliability. Furthermore, the assembly process can be simplified, making installation faster and more convenient, and increasing production efficiency. Furthermore, the fact that the partition body and the channel partition are formed in one piece during the production process also increases the production efficiency and manufacturing speed of the partition assembly.

[0057] Please continue to refer to Figure 1 and Figure 2 The first partition structure includes a first longitudinal protective plate 210, a first middle plate 211 connected between the first side plate 111 and the first longitudinal protective plate 210, a first upper top plate 212 connected to the top of the first longitudinal protective plate 210 and part of the first middle plate 211, and a first lower top plate 213 connected to the bottom of the first longitudinal protective plate 210 and part of the first middle plate 211.

[0058] The second baffle structure includes a second longitudinal protective plate 220, a second middle plate 221 connected between the second side plate 112 and the second longitudinal protective plate 220, a second upper plate 222 connected to the top of the second longitudinal protective plate 220 and a portion of the second middle plate 221, and a second lower plate 223 connected to the bottom of the second longitudinal protective plate 220 and a portion of the second middle plate 221. The first longitudinal protective plate 210 and the second longitudinal protective plate 220 are arranged parallel to and opposite each other between the first side plate 111 and the second side plate 112, dividing the area between the first side plate 111 and the second side plate 112 into three sections. The first upper plate 212 and the first lower plate 213 extend from the first longitudinal protective plate 210 toward the first side plate 111. The first upper plate 212, the first middle plate 211, the first longitudinal protective plate 210, and the first lower plate 213 together form the first channel area 131. The second upper top plate 222 and the second lower top plate 223 extend from the second longitudinal protection plate 220 toward the second side plate 112 . The second upper top plate 222 , the second middle plate 221 , the second longitudinal protection plate 220 and the second lower top plate 223 together form a third channel area 133 .

[0059] It is understood that the area between the first channel area 131 and the third channel area 133 is the second channel area 132. Since the first channel area 131 is enclosed by the first upper plate 212, the first middle plate 211, the first longitudinal protective plate 210, and the first lower plate 213, if the A-phase conductor assembly 401 is disposed in the first channel area 131, the A-phase conductor assembly 401 in the first channel area 131 is insulated from the phase conductor assemblies outside the first channel area 131. Similarly, since the third channel area 133 is enclosed by the second upper plate 222, the second middle plate 221, the second longitudinal protective plate 220, and the second lower plate 223, if the C-phase conductor assembly 403 is disposed in the third channel area 133, the C-phase conductor assembly 403 disposed in the third channel area 133 is insulated from the phase conductor assemblies outside the third channel area 133. Therefore, when the A-phase conductor assembly 401, the B-phase conductor assembly 402 or the C-phase conductor assembly 403 is respectively provided in the first channel area 131, the second channel area 132 and the third channel area 133, the A-phase conductor assembly 401, the B-phase conductor assembly 402 and the C-phase conductor assembly 403 can be separated and insulated, thereby improving the organization inside the circuit breaker and the convenience of maintenance.

[0060] Through the above solution, the first upper plate 212, the first middle plate 211, the first longitudinal protective plate 210, and the first lower plate 213 enclose the first channel area 131, and the second upper plate 222, the second middle plate 221, the second longitudinal protective plate 220, and the second lower plate 223 enclose the third channel area 133. This design clearly divides the first channel area 131, the second channel area 132, and the third channel area 133, making the layout of the components inside the circuit breaker more orderly and effectively utilizing space, providing suitable installation locations for the components inside the circuit breaker. The clear channel area division and stable structural design make maintenance and repair work more convenient, allowing staff to more easily access and inspect the key components of the circuit breaker. Through reasonable structural design, it also helps to improve the heat dissipation performance inside the circuit breaker, thereby extending the service life of the equipment.

[0061] Figure 6 This is a schematic diagram of the partition assembly in this embodiment correspondingly provided with a plug-in structure 500. Figure 4 and Figure 6 The corresponding partition assembly can also be provided with a plug-in structure 500. The two sides of the plug-in structure 500 can extend from the two sides of the B-phase conductor assembly 402. When the plug-in structure 500 is plugged into the B-phase conductor assembly 402, the front ends of the A-phase conductor assembly 401, the B-phase conductor assembly 402 and the C-phase conductor assembly 403 can also be completely isolated.

[0062] Please continue to refer to Figure 1 and Figure 2 In this embodiment, a third upper top plate 230 is further included. The third upper top plate 230 is connected between the first upper top plate 212 and the second upper top plate 222 and is located at the upper ends of the first longitudinal protection plate 210 and the second longitudinal protection plate 220.

[0063] Through the above solution, the third upper plate 230 connects the first upper plate 212 and the second upper plate 222 and is located at the upper ends of the first longitudinal protection plate 210 and the second longitudinal protection plate 220. This design can enhance the integrity and stability of the entire partition structure. When used in a four-pole residual current protection circuit breaker, the four-pole residual current protection circuit breaker also has an N-phase conductor assembly. The N-phase conductor assembly can be arranged above the third upper plate 230. The N-phase conductor assembly passes through the zero-sequence mutual inductor 400 from above the third upper plate 230. In this way, the first upper plate 212, the second upper plate 222, and the third upper plate 230 work together to form an insulation barrier, which provides isolation and insulation for the installation of the N-phase conductor assembly. When it is not used in a four-pole residual current protection circuit breaker, that is, when no N-phase conductor component needs to be set, the zero-sequence transformer 400 is set on the first horizontal plate and the second horizontal plate 122, the channel partition passes through the zero-sequence transformer 400, and the third upper top plate 230 also supports the zero-sequence transformer 400. The third upper top plate 230 can serve as an additional barrier to prevent the phase conductor components in the second channel area 132 from accidentally contacting sensitive or dangerous components, which helps to improve the safety of the circuit breaker.

[0064] Please refer to Figure 2 In this embodiment, a first connecting structure 141 is provided between the first transverse plate 121 and the first lower top plate 213. The first connecting structure 141 is perpendicular to the first support plate, that is, the first connecting structure 141 is perpendicular to the plane where the first side plate 111 and the first transverse plate 121 are located. A second connecting structure 142 is provided between the second transverse plate 122 and the second lower top plate 223. The second connecting structure 142 is perpendicular to the second support plate, that is, the second connecting structure 142 is perpendicular to the plane where the second side plate 112 and the second transverse plate 122 are located. A first avoidance groove 151 is provided on the first connecting structure 141, and a second avoidance groove 152 is provided on the second connecting structure 142. The first avoidance groove 151 and the second avoidance groove 152 are adjacent and symmetrical, and are used to reserve appropriate space for the installation of the conductor assembly.

[0065] Through the above solution, the first connection structure 141 and the second connection structure 142 are respectively perpendicular to the corresponding support plates, which can provide additional support and stability, thereby enhancing the mechanical strength of the entire assembly. At the same time, the presence of the first connection structure 141 and the second connection structure 142 can increase the surface area of the entire partition assembly and increase the creepage distance of the conductive particles, thereby improving the insulation effect of the partition assembly. The design of the first avoidance groove 151 and the second avoidance groove 152 takes into account the installation requirements of the conductor assembly. The design of the slot position allows the conductor assembly to be installed smoothly, improving the convenience and efficiency of the installation process. The design of the first avoidance groove 151 and the second avoidance groove 152 may make space utilization more reasonable, leaving the necessary installation space for the conductor assembly without sacrificing the functions of other components or structures. Through precise positioning and stable installation, the connection of the conductor assembly may be more reliable, which helps to improve the stability and performance of the entire electrical system.

[0066] It can be understood that, in this embodiment, the first avoidance groove 151 and the second avoidance groove 152 are provided to reserve sufficient space for the installation of the B-phase conductor assembly 402 .

[0067] In this embodiment, a first placement structure is provided above the first transverse plate 121. The first placement structure is composed of a first placement plate 171 fixed to the first transverse plate 121 and a second placement plate 181 fixed to the bottom of the first connecting structure 141. The first placement plate 171 and the second placement plate 181 are equivalent to being provided at the L-shaped turning point formed by the first side plate 111 and the first transverse plate 121, thereby increasing the area of the L-shaped turning point and making it suitable for the placement of the zero-sequence mutual inductor 400. A second placement structure is provided above the second transverse plate 122. The second placement structure is composed of a third placement plate 172 fixed to the second transverse plate 122 and a fourth placement plate 182 fixed to the bottom of the second connecting structure 142. The third placement plate 172 and the fourth placement plate 182 are equivalent to being provided at the L-shaped turning point formed by the second side plate 112 and the second transverse plate 122, thereby increasing the area of the L-shaped turning point and making it more suitable for the placement of the zero-sequence mutual inductor 400.

[0068] Through the above scheme, the zero-sequence mutual inductor 400 can be placed more stably through the first placement structure and the second placement structure. At the same time, the first placement structure is composed of a first placement plate 171 fixed on the first horizontal plate 121 and a second placement plate 181 fixed on the bottom of the first connecting structure 141. The second placement structure is composed of a third placement plate 172 fixed on the second horizontal plate 122 and a fourth placement plate 182 fixed on the bottom of the second connecting structure 142, which can increase the surface area of the entire partition assembly and increase the creepage distance of the conductive particles, thereby improving the insulation effect of the partition assembly.

[0069] Please continue to refer to Figure 1The end of the first transverse plate 121 facing away from the first side plate 111 protrudes relative to the end of the first placement plate 171 facing away from the first side plate 111, forming a first protrusion 301. The first protrusion 301 is suitable for assembly with the base. The end of the second transverse plate 122 facing away from the second side plate 112 protrudes relative to the end of the third placement plate 172 facing away from the second side plate 112, forming a second protrusion 302. The second protrusion 302 is suitable for assembly with the base.

[0070] The first protrusion 301 and the second protrusion 302 reduce the adjustment and alignment work during assembly, thereby improving the assembly accuracy, structural strength, and assembly convenience of the component.

[0071] It is understandable that the partition assembly needs to be installed on the base and middle cover of the circuit breaker. Therefore, corresponding assembly guide grooves are set at corresponding positions in the base and middle cover of the circuit breaker. In this embodiment, the edge of the first side plate 111, the edge of the first transverse plate 121 and the first protrusion 301, and the edge of the second side plate 112, the edge of the second transverse plate 122 and the second protrusion 302 are respectively inserted into the corresponding assembly guide grooves to complete the assembly. Specifically, from Figure 1 As can be seen from the figure, the first side panel 111 has a first upper edge 191, a first rear edge 192, and a lower edge of the first side panel 111. The first transverse panel 121 has a first front end and a lower edge of the first transverse panel 121. The lower edge of the first transverse panel 121 and the lower edge of the first side panel 111 are aligned, collectively referred to as the first lower edge 193. The first end away from the first side panel 111 is the first front end of the first transverse panel 121, which is the first protrusion 301 mentioned above. Correspondingly, the second side panel 112 has a second upper edge (not shown), a second rear edge 194, and a lower edge of the second side panel 112. The second transverse panel 122 has a second front end and a lower edge of the second transverse panel 122. The lower edge of the second transverse panel 122 and the lower edge of the second side panel 112 are aligned, collectively referred to as the second lower edge 195. It can be seen that the corresponding positions of the first upper edge 191, the first rear edge 192, the first lower edge 193, the first protrusion 301 and the second upper edge (not shown), the second rear edge 194, the second lower edge 195, and the second protrusion 302 in the base and the middle cover of the circuit breaker are respectively provided with assembly guide grooves. The first upper edge 191, the first rear edge 192, the first lower edge 193 and the second upper edge (not shown), the second rear edge 194, the first protrusion 301, the second protrusion 302 and the second lower edge 195 can be assembled with the corresponding assembly guide grooves. This design simplifies the assembly process because they can be directly aligned and fixed with the base and the middle cover, ensuring the accuracy and consistency of the assembly, thereby improving the stability and reliability of the overall structure.

[0072] Please refer to Figure 1 and Figure 2In this embodiment, a third connecting structure 160 is disposed above the third upper plate 230 and is secured between the first side plate 111 and the second side plate 112. Positioned between the first side plate 111 and the second side plate 112, this design provides an additional fixing point for the base assembly, thereby enhancing the stability of the entire structure and the reliability of the assembly. Furthermore, the presence of the third connecting structure 160 increases the surface area of the entire separator assembly, thereby increasing the creepage distance of the conductive particles and improving the insulation performance of the separator assembly.

[0073] In some embodiments, a recess is provided on the third connecting structure 160 so as to leave a certain space for assembling some components in the circuit breaker for easy installation. At the same time, the groove of the third connecting structure 160 increases the surface area of the partition assembly, thereby increasing the creepage distance of the conductive particles to enhance the insulation effect of the partition assembly.

[0074] A protective plate 161 is further provided on the third connecting structure 160. The protective plate 161 can support the zero-sequence transformer 400 placed on the first transverse plate 121 and the second transverse plate 122. The presence of the protective plate 161 can make the assembly of the zero-sequence transformer 400 easier because it provides a flat and fixed contact surface and can support the zero-sequence transformer 400, making the installation of the zero-sequence transformer 400 more stable. At the same time, the protective plate 161 can provide additional mechanical protection for the upper part of the zero-sequence transformer 400 to prevent damage to the transformer caused by external factors such as impact, vibration or wear.

[0075] like Figure 1 and Figure 2 As shown, there is a groove between the first upper edge 191 and the protective plate 161, so that a step is formed between the first upper edge and the protective plate 161. This is to provide an avoidance structure corresponding to the protruding structure in the middle cover at the corresponding position. The avoidance structure makes the partition assembly more firmly installed.

[0076] The present application also provides a circuit breaker including a zero-sequence transformer 400, a three-phase conductor assembly, and a partition assembly according to any of the preceding embodiments. The zero-sequence transformer 400 is placed on the first transverse plate 121 and the second transverse plate 122, and the three-phase conductor assembly passes through the first channel region 131, the second channel region 132, and the third channel region 133, respectively. Since the structure and beneficial effects of the partition assembly have been described in detail in the preceding embodiments, they will not be further elaborated herein.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A partition assembly, applied to a circuit breaker, characterized in that: include: A partition body and a channel partition fixedly connected to the partition body, the partition body including a first support plate and a second support plate, the first support plate and the second support plate being arranged opposite each other, the first support plate having a first side plate and a first transverse plate fixedly connected to the first side plate, and the first side plate and the first transverse plate forming an L-shape, the second support plate having a second side plate and a second transverse plate fixedly connected to the second side plate, and the second side plate and the second transverse plate forming an L-shape, wherein the zero-sequence mutual inductor is suitably placed on the first transverse plate and the second transverse plate; The channel partition includes a first partition structure and a second partition structure, and the first partition structure and the second partition structure are relatively arranged between the first side plate and the second side plate, so that the first partition structure and the second partition structure divide the space between the first side plate and the second side plate into a first channel area, a second channel area and a third channel area. The first partition structure and the second partition structure are at least partially located on the side where the first transverse plate and the second transverse plate are located, so that when the zero-sequence transformer is placed on the first transverse plate and the second transverse plate, the channel partition can pass through the zero-sequence transformer.

2. The partition assembly according to claim 1, wherein: The first partition structure includes a first longitudinal protection plate, a first middle plate connected between a first side plate and the first longitudinal protection plate, a first upper plate connected to the top end of the first longitudinal protection plate and a portion of the first middle plate, and a first lower plate connected to the bottom end of the first longitudinal protection plate and a portion of the first middle plate; the second partition structure includes a second longitudinal protection plate, a second middle plate connected between a second side plate and the second longitudinal protection plate, a second upper plate connected to the top end of the second longitudinal protection plate and a portion of the second middle plate, and a second lower plate connected to the bottom end of the second longitudinal protection plate and a portion of the second middle plate; The first longitudinal protection plate and the second longitudinal protection plate are arranged in parallel between the first side plate and the second side plate, the first upper top plate and the first lower top plate extend from the position of the first longitudinal protection plate toward the first side plate, and the first upper top plate, the first middle plate, the first longitudinal protection plate and the first lower top plate enclose a first channel area; The second upper top plate and the second lower top plate extend from the position of the second longitudinal protection plate toward the second side plate, and the second upper top plate, the second middle plate, the second longitudinal protection plate and the second lower top plate together form the third channel area.

3. The partition assembly according to claim 2, characterized in that It also includes a third upper top plate, which is connected between the first upper top plate and the second upper top plate and is located at the upper ends of the first longitudinal protection plate and the second longitudinal protection plate.

4. The partition assembly according to claim 2, wherein: A first connecting structure is provided between the first transverse plate and the first lower top plate, the first connecting structure is perpendicular to the first supporting plate, and a first avoidance groove is provided on the first connecting structure; A second connecting structure is provided between the second transverse plate and the second lower top plate, the second connecting structure is perpendicular to the second support plate, and a second avoidance groove is provided on the second connecting structure; The first avoidance groove and the second avoidance groove are symmetrical and suitable for installing the conductor assembly.

5. The partition assembly according to claim 4, characterized in that A first placement structure is provided above the first transverse plate, and the first placement structure is composed of a first placement plate fixed on the first transverse plate and a second placement plate fixed on the bottom of the first connecting structure; A second placement structure is provided above the second transverse plate, and the second placement structure is composed of a third placement plate fixed on the second transverse plate and a fourth placement plate fixed on the bottom of the second connecting structure.

6. The partition assembly according to claim 5, characterized in that The end of the first transverse plate facing away from the first side plate is protruding relative to the end of the first placement plate facing away from the first side plate, and is a first protrusion, and the first protrusion is suitable for assembly with the base; The end of the second transverse plate facing away from the second side plate protrudes relative to the end of the third placement plate facing away from the second side plate, and is a second protrusion. The second protrusion is suitable for assembly with the base.

7. The partition assembly according to claim 3, characterized in that A third connecting structure is provided above the third upper plate, and the third connecting structure is fixed between the first side plate and the second side plate.

8. The partition assembly according to claim 7, wherein: It also includes a protection plate arranged on the third connecting structure, and the protection plate can resist the zero-sequence mutual inductor placed on the first transverse plate and the second transverse plate.

9. The partition assembly according to claim 1, wherein: The partition body and the channel partition are integrally formed.

10. A circuit breaker, characterized in that: It includes a zero-sequence mutual inductor, a three-phase conductor assembly and the partition assembly according to any one of claims 1 to 9, the zero-sequence mutual inductor is placed on the first transverse plate and the second transverse plate, and the three-phase conductor assembly passes through the first channel area, the second channel area and the third channel area respectively.

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