Arc-proof isolation baffle for low-voltage box of ring main unit

Abstract

The utility model discloses a kind of arc prevention isolation baffle of ring net cabinet low voltage box, it is related to ring net cabinet technical field, including circuit breaker body, the both sides of circuit breaker body are provided with arc separation plate, connecting assembly is arranged between the one side of circuit breaker body and arc separation plate, and connecting assembly is used to fix arc separation plate;Connecting assembly includes fixed casing, and fixed casing equidistant fixed connection is in the one side of circuit breaker body, fixed groove is set in the inside of fixed casing, connecting groove is set in the one side of fixed groove inner wall, the one side fixed connection of arc separation plate has connecting plate, the one side fixed connection of connecting plate has fixed plate, and the inside of fixed groove is slidably connected with the outside of fixed plate.The utility model discloses a kind of arc prevention isolation baffle of ring net cabinet low voltage box, by using connecting assembly and semicircular block and limit frame etc. structure, ensure that arc separation plate can be closely combined and keep parallel state after assembly is completed, to effectively enhance the stability of assembly and overall reliability.

Description

Technical Field

[0001] This utility model relates to the field of ring main unit technology, and in particular to an anti-arc isolation baffle for a low-voltage box of a ring main unit. Background Technology

[0002] A fully insulated ring main unit (RMU) is a high-voltage or medium-voltage switchgear used in power distribution systems to achieve ring connection and automated control of the power distribution network.

[0003] The existing arc-blocking structure of molded case circuit breakers generally adopts a dovetail or square slot design. Since both the molded case circuit breaker and the arc-blocking plate are made by injection molding or molding process, the fitting gap is difficult to control, which can easily lead to defects such as difficulty in insertion or loosening after assembly. In order to address the above problems, we have introduced an arc-blocking isolation baffle for the low-voltage box of ring main unit. Utility Model Content

[0004] This utility model discloses an arc-proof isolation baffle for a low-voltage box of a ring main unit. It studies and improves the existing structure and its shortcomings, and provides an arc-proof isolation baffle for a low-voltage box of a ring main unit to achieve better practical value.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An arc-proof isolation baffle for a low-voltage box of a ring main unit includes a circuit breaker body, with arc-proof plates provided on both sides of the circuit breaker body, and a connecting component provided between the circuit breaker body and one side of the arc-proof plate, the connecting component being used to fix the arc-proof plate.

[0007] The connecting assembly includes a fixed housing, which is equidistantly fixedly connected to one side of the circuit breaker body. The fixed housing has a fixed groove inside, and a connecting groove is formed on one side of the inner wall of the fixed groove. A connecting plate is fixedly connected to one side of the arc-blocking plate, and a fixed plate is fixedly connected to one side of the connecting plate. The inside of the fixed groove is slidably connected to the outside of the fixed plate, and the inside of the connecting groove is slidably connected to the outside of the connecting plate.

[0008] In a preferred embodiment, the connecting assembly further includes a semi-circular groove, which is equidistantly formed on one side of the inner wall of the fixed groove. A semi-circular block is equidistantly fixed to one side of the fixed plate, and the outer side of the semi-circular block is slidably connected to the inside of the semi-circular groove.

[0009] In a preferred embodiment, a protrusion is fixedly connected to one side of the fixed housing, and the corners of the protrusion are provided with arc surfaces.

[0010] In a preferred embodiment, a side plate is fixedly connected to one side of the fixing plate, one side of the side plate is in contact with one side of the fixing housing, a limiting frame is fixedly connected to one side of the side plate, the inside of the limiting frame abuts against the outside of the protrusion, and one side of the limiting frame is provided with an arc surface.

[0011] In a preferred embodiment, the arc-blocking plate, connecting plate, fixing plate, side plate, and limiting frame are integrally formed and are all made of flexible engineering plastic.

[0012] The arc-proof isolation baffle for the low-voltage box of a ring main unit provided by this utility model has the following advantages:

[0013] Firstly, when installing the arc-blocking plate, simply align the tip of the fixing plate with the fixing groove on the fixing housing, and then insert it forcefully until it is fully inserted. The connecting plate slides in the connecting groove. Through the cooperation of the semi-circular block and the semi-circular groove, the connection between the fixing plate and the fixing housing is strengthened. At the same time, the arc surface of the protrusion contacts the arc surface of the limiting frame, which will push one end of the limiting frame to open until the protrusion is fully inserted into the limiting frame. At this time, the fixing plate and the fixing groove have achieved a tight fit. The connecting groove will also restrict the position of the connecting plate, thereby ensuring that the parallel spacing of all arc-blocking plates is maintained. When it is necessary to remove it, simply pry open the limiting frame and then pull the fixing plate out of the fixing groove to complete the disassembly and assembly.

[0014] Secondly, by using connecting components, such as semi-circular blocks and limiting frames, it is ensured that the arc-blocking plates can fit tightly and remain parallel after assembly, thereby improving the stability and reliability of the assembly. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of an anti-arc isolation baffle for a low-voltage box of a ring main unit proposed in this utility model.

[0016] Figure 2 This is a front view schematic diagram of an anti-arc isolation baffle for a low-voltage box of a ring main unit proposed in this utility model.

[0017] Figure 3 This is a first explosion-proof schematic diagram of an anti-arc isolation baffle for a low-voltage box of a ring main unit proposed in this utility model.

[0018] Figure 4 This is a second explosion diagram of an anti-arc isolation baffle for a low-voltage box of a ring main unit proposed in this utility model.

[0019] Figure 5 This is a third explosion-proof schematic diagram of an anti-arc isolation baffle for a low-voltage box of a ring main unit proposed in this utility model.

[0020] In the attached diagram: 1. Circuit breaker body; 2. Arc blocking plate; 3. Fixed housing; 4. Fixed groove; 5. Connecting groove; 6. Connecting plate; 7. Fixed plate; 8. Semicircular groove; 9. Semicircular block; 10. Protrusion; 11. Side plate; 12. Limiting frame. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that, in the context of use, the terms up, down, left, right, front, back, top, bottom, forward, reverse, clockwise, and counterclockwise in the following description are used merely for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative positions and / or orientations between the various parts of the object and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that, in practice, unless otherwise explicitly specified and limited, the terms "installation," "fixing," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a structural connection or a mechanical connection; a direct connection or an indirect connection via an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] It should be noted that these and subsequent accompanying drawings are merely illustrative and are not drawn to scale, and should not be construed as limiting the scope of protection of this utility model. Furthermore, variations in different embodiments can be appropriately combined. The components of the embodiments described and marked in the accompanying drawings can typically be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0025] The arc-proof isolation baffle of the low-voltage box of the ring main unit disclosed in this utility model is mainly used in the ring main unit scenario.

[0026] Reference Figures 1 to 5 An arc-proof isolation baffle for a low-voltage box of a ring main unit includes: a circuit breaker body 1, arc-proof plates 2 are provided on both sides of the circuit breaker body 1, and a connecting component is provided between the circuit breaker body 1 and one side of the arc-proof plate 2, the connecting component being used to fix the arc-proof plate 2.

[0027] The connecting assembly includes a fixed housing 3, which is fixedly connected to one side of the circuit breaker body 1 at equal intervals. A fixed groove 4 is provided inside the fixed housing 3, and a connecting groove 5 is provided on one side of the inner wall of the fixed groove 4. A connecting plate 6 is fixedly connected to one side of the arc quenching plate 2, and a fixed plate 7 is fixedly connected to one side of the connecting plate 6. The inside of the fixed groove 4 is slidably connected to the outside of the fixed plate 7, and the inside of the connecting groove 5 is slidably connected to the outside of the connecting plate 6.

[0028] The connecting assembly also includes a semi-circular groove 8, which is equidistantly opened on one side of the inner wall of the fixed groove 4. A semi-circular block 9 is equidistantly fixedly connected to one side of the fixed plate 7, and the outer side of the semi-circular block 9 is slidably connected to the inside of the semi-circular groove 8.

[0029] A protrusion 10 is fixedly connected to one side of the fixed housing 3, and the corners of the protrusion 10 are provided with arc surfaces;

[0030] A side plate 11 is fixedly connected to one side of the fixed plate 7. One side of the side plate 11 is in contact with one side of the fixed housing 3. A limit frame 12 is fixedly connected to one side of the side plate 11. The inside of the limit frame 12 abuts against the outside of the protrusion 10. An arc surface is provided on one side of the limit frame 12.

[0031] In the above technical solution, considering that the existing molding case circuit breaker arc breaker plates and the fixing structure of the circuit breaker generally adopt a dovetail or square groove design, and since both the molding case circuit breaker and the arc breaker plates are made by injection molding or molding processes, the fitting clearance is difficult to control, which easily leads to problems such as difficulty in insertion or loosening after assembly. To solve this problem, the specific operation is as follows: By setting a connecting component, when installing the arc breaker plate 2, simply align the pointed surface of the fixing plate 7 with the fixing groove 4 of the fixing housing 3, and then forcefully insert it completely into the groove. The connecting plate 6 in The internal sliding of the connecting groove 5 utilizes the contacting action of the semi-circular block 9 and the semi-circular groove 8 to increase the connection between the fixing plate 7 and the fixing housing 3. Simultaneously, the arc surface of the protrusion 10 contacts the arc surface of the limiting frame 12, pushing one end of the limiting frame 12 open until the protrusion 10 enters the limiting frame. At this point, the fixing plate 7 and the fixing groove 4 are completely fitted together. The connecting groove 5 restricts the connecting plate 6, ensuring that each arc-blocking plate 2 maintains a parallel distance. During disassembly, simply pry open the limiting frame 12 and pull the fixing plate 7 out of the fixing groove 4. By utilizing the connecting components, and through structures such as the semi-circular block 9 and the limiting frame 12, the arc-blocking plates 2 are ensured to fit tightly and remain parallel after assembly, thereby improving the stability and reliability of the assembly.

[0032] Reference Figures 1 to 5 In a preferred embodiment, the arc-blocking plate 2, the connecting plate 6, the fixing plate 7, the side plate 11, and the limiting frame 12 are integrally formed and are all made of flexible engineering plastic. The use of flexible engineering plastic has good elasticity and impact resistance, which helps to improve the tightness of the fit and reduce the assembly difficulty.

[0033] Working principle: When using the arc-blocking plate 2, simply align the pointed end of the fixing plate 7 with the fixing groove 4 of the fixing housing 3, and then forcefully insert it completely into the groove. The connecting plate 6 slides inside the connecting groove 5. The contact between the semi-circular block 9 and the semi-circular groove 8 is utilized to increase the connection between the fixing plate 7 and the fixing housing 3. At the same time, the arc surface of the protrusion 10 contacts the arc surface of the limiting frame 12, which will push one end of the limiting frame 12 open until the protrusion 10 enters the limiting frame. At this time, the fixing plate 7 and the fixing groove 4 are completely in contact. The connecting groove 5 restricts the connecting plate 6, so that each arc-blocking plate 2 maintains a parallel distance. When disassembling, simply pry open the limiting frame 12 and then pull the fixing plate 7 out of the fixing groove 4. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An arc-proof isolation baffle for a low-voltage box of a ring main unit, comprising a circuit breaker body (1), characterized in that, Both sides of the circuit breaker body (1) are provided with arc-blocking plates (2), and a connecting component is provided between the circuit breaker body (1) and one side of the arc-blocking plate (2). The connecting component is used to fix the arc-blocking plate (2). The connecting assembly includes a fixed housing (3), which is fixedly connected to one side of the circuit breaker body (1) at equal intervals. A fixing groove (4) is provided inside the fixed housing (3), and a connecting groove (5) is provided on one side of the inner wall of the fixing groove (4). A connecting plate (6) is fixedly connected to one side of the arc diaphragm plate (2), and a fixing plate (7) is fixedly connected to one side of the connecting plate (6). The inside of the fixing groove (4) is slidably connected to the outside of the fixing plate (7), and the inside of the connecting groove (5) is slidably connected to the outside of the connecting plate (6).

2. The arc-proof isolation baffle for a low-voltage box of a ring main unit according to claim 1, characterized in that, The connecting assembly also includes a semi-circular groove (8), which is equidistantly opened on one side of the inner wall of the fixed groove (4). A semi-circular block (9) is equidistantly fixedly connected to one side of the fixed plate (7), and the outer side of the semi-circular block (9) is slidably connected to the inside of the semi-circular groove (8).

3. The arc-proof isolation baffle for a low-voltage box of a ring main unit according to claim 1, characterized in that, A protrusion (10) is fixedly connected to one side of the fixed housing (3), and the corners of the protrusion (10) are provided with arc surfaces.

4. The arc-proof isolation baffle for a low-voltage box of a ring main unit according to claim 1, characterized in that, A side plate (11) is fixedly connected to one side of the fixed plate (7). One side of the side plate (11) is in contact with one side of the fixed housing (3). A limiting frame (12) is fixedly connected to one side of the side plate (11). The inside of the limiting frame (12) abuts against the outside of the protrusion (10). An arc surface is provided on one side of the limiting frame (12).

5. The arc-proof isolation baffle for a low-voltage box of a ring main unit according to claim 1, characterized in that, The arc-blocking plate (2), connecting plate (6), fixing plate (7), side plate (11) and limiting frame (12) are integrally formed and are all made of flexible engineering plastic material.

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