Low-voltage distributed photovoltaic intelligent circuit breaker

Abstract

This utility model relates to the field of circuit breaker technology, specifically disclosing a low-voltage distributed photovoltaic intelligent circuit breaker. A fixed plate has protruding plates at the middle of both ends, each with a fixing hole in the middle. A rail is provided transversely along the middle of the front wall of the connecting plate. A first folding plate is hinged at its left end to the left end of the front wall of the fixed plate. A second folding plate is hinged at its right end to the right end of the first folding plate, and its left end is hinged to the left end of the rear wall of the connecting plate. A slot matching the rail is provided transversely along the rear wall of the circuit breaker body. A cap structure is provided on the front wall of the connecting plate at the right end of the rail, and a second screw hole is provided on the front wall of the connecting plate near the left end of the rail, with a positioning element threaded into the second screw hole. This design effectively solves the problem of inconvenient inspection and maintenance operations after installation of the low-voltage distributed photovoltaic intelligent circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a low-voltage distributed photovoltaic intelligent circuit breaker. Background Technology

[0002] The low-voltage distributed photovoltaic intelligent circuit breaker integrates an electric operating mechanism, an intelligent controller, and a molded case circuit breaker. It features remote control, anti-islanding protection, multiple fault monitoring, and automatic reclosing functions. Through intelligent control modules and IoT communication technology, it enables the safe operation and efficient management of photovoltaic systems and is widely used in distributed photovoltaic grid-connected scenarios.

[0003] Currently, low-voltage distributed photovoltaic intelligent circuit breakers are generally installed inside protection boxes. Since other electrical components are also integrated inside the protection boxes, it is not convenient to perform inspection and maintenance operations after the low-voltage distributed photovoltaic intelligent circuit breaker is installed. Utility Model Content

[0004] The purpose of this utility model is to provide a low-voltage distributed photovoltaic intelligent circuit breaker to solve the problem that it is inconvenient to inspect and maintain the current low-voltage distributed photovoltaic intelligent circuit breaker after installation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage distributed photovoltaic intelligent circuit breaker, comprising a circuit breaker body, wherein the middle portions of both ends of the fixing plate are respectively provided with protruding plates, and the middle portions of the protruding plates are respectively provided with fixing holes; a rail is provided in the middle of the front wall of the connecting plate along the transverse direction; the left end of a folding plate is hinged to the left end of the front wall of the fixing plate; the right end of a second folding plate is hinged to the right end of the first folding plate, and the left end of the second folding plate is hinged to the left end of the rear wall of the connecting plate; the rear wall of the circuit breaker body is provided with a slot along the transverse direction that matches the rail.

[0006] Preferably, the front wall of the connecting plate is provided with a cap structure at the right end of the rail, and the front wall of the connecting plate is provided with a screw hole two near the left end of the rail, and a positioning element is threaded into the screw hole two.

[0007] Preferably, the positioning element includes an internal threaded sleeve and a screw threaded inside the internal threaded sleeve. The front end face of the screw is provided with a cross groove, and the rear end of the internal threaded sleeve is provided with a threaded connector that matches the threaded connection of the screw hole.

[0008] Preferably, the left side wall of the circuit breaker body is provided with an arc-shaped groove that fits against the outer peripheral wall of the internal threaded sleeve.

[0009] Preferably, the fixing plate, the first folding plate, and the second folding plate are respectively provided with screw hole one, screw hole three, and screw hole four at the positions opposite to the second screw hole, and the screw hole one, screw hole three, and screw hole four are all threadedly fitted to the screw rod.

[0010] Preferably, the front wall of the convex plate is provided with side grooves near the outer side, and the fixing holes are respectively provided in the middle of the inner rear wall of the side groove.

[0011] Preferably, the left end of the front wall of the fixed plate is provided with a first ear plate, the left end of the rear wall of the first folding plate is provided with a third ear plate hinged to the first ear plate, the right end face of the first folding plate is provided with a fourth ear plate, the right end of the rear wall of the second folding plate is provided with a fifth ear plate hinged to the fourth ear plate, the left end of the front wall of the second folding plate is provided with a sixth ear plate, and the left end of the rear wall of the connecting plate is provided with a second ear plate hinged to the sixth ear plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The low-voltage distributed photovoltaic intelligent circuit breaker of this utility model is installed by fixing the fixing plate to the rear wall of the inner cavity of the protective box. Then, by the relative swinging of the first and second folding plates, the circuit breaker body can be easily pulled forward or pushed back. After the circuit breaker body is pulled forward, it can be exposed outside the protective box, thus facilitating its inspection and maintenance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the main body of the circuit breaker of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the fixing plate of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the connecting plate of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the folding plate of this utility model;

[0019] Figure 6 This is a three-dimensional structural diagram of the second folding plate of this utility model;

[0020] Figure 7 This is a three-dimensional structural diagram of the positioning component of this utility model.

[0021] In the diagram: 1-Circuit breaker body; 1.1-Slot; 1.2-Arc-shaped groove;

[0022] 2-Fixing plate; 2.1-Protruding plate; 2.2-Side groove; 2.3-Fixing hole; 2.4-Ear plate one; 2.5-Screw hole one;

[0023] 3-Connecting plate; 3.1-Clamping rail; 3.2-Ear plate two; 3.3-Screw hole two;

[0024] 4-Folding plate one; 4.1-Ear plate three; 4.2-Ear plate four; 4.3-Screw hole three;

[0025] 5-Folding plate two; 5.1-Ear plate five; 5.2-Ear plate six; 5.3-Screw hole four;

[0026] 6-Locking element; 6.1-Internal threaded sleeve; 6.1.1-Threaded connector; 6.2-Screw; 6.2.1-Cross groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7 This utility model provides a technical solution: a low-voltage distributed photovoltaic intelligent circuit breaker, including a circuit breaker body 1, which is an NDM3E series electronic plastic-cased circuit breaker. The rear wall of the circuit breaker body 1 is provided with a slot 1.1 along the lateral direction, and the left side wall of the circuit breaker body 1 is provided with an arc-shaped groove 1.2 that penetrates the front and rear walls.

[0029] The fixing plate 2 has protruding plates 2.1 at both ends of its middle section. The front wall of the protruding plates 2.1 has side grooves 2.2 near the outer side. Fixing holes 2.3 are located in the middle of the rear wall of the inner cavity of the side grooves 2.2. The fixing plate 2 is fixed to the rear wall of the protective box cavity using screws through the fixing holes 2.3. The left end of the front wall of the fixing plate 2 has an ear plate 2.4, and the middle of the fixing plate 2 has a screw hole 2.5 near the left end.

[0030] A retaining rail 3.1 is provided in the middle of the front wall of the connecting plate 3 along the transverse direction. A head structure is provided on the front wall of the connecting plate 3 at the right end of the retaining rail 3.1. A screw hole 3.3 is provided on the front wall of the connecting plate 3 near the left end of the retaining rail 3.1. An ear plate 3.2 is provided on the left end of the rear wall of the connecting plate 3.

[0031] The left end of the rear wall of the folding plate 4 is provided with an ear plate 4.1 that is hinged to the ear plate 2.4, and the right end face of the folding plate 4 is provided with an ear plate 4.2. The folding plate 4 is provided with a screw hole 4.3 at the position directly opposite the screw hole 2.5.

[0032] The right end of the rear wall of the second folding plate 5 is provided with an ear plate 5.1 that is hinged to the ear plate 4.2, and the left end of the front wall of the second folding plate 5 is provided with an ear plate 6.2. The second folding plate 5 is provided with a screw hole 4.3 directly opposite the screw hole 1.5. The ear plate 6.2 is hinged to the ear plate 2.2.

[0033] The positioning component 6 includes an internal threaded sleeve 6.1 and a screw 6.2 threadedly fitted inside the internal threaded sleeve 6.1. The front end face of the screw 6.2 has a cross groove 6.2.1, and the rear end of the internal threaded sleeve 6.1 has a threaded connector 6.1.1 that matches the threaded engagement of screw hole 3.3. The rear part of the screw 6.2 also matches the threaded engagement of screw holes 2.5, 4.3, and 5.3. The outer peripheral wall of the internal threaded sleeve 6.1 fits against the arc-shaped groove 1.2.

[0034] In summary, when installing the circuit breaker, the fixing plate 2, connecting plate 3, folding plate 1 4, and folding plate 2 5 are pre-assembled structures. First, the fixing plate 2 is fixed to the rear wall of the protective box cavity using screws through the fixing holes 2.3. Then, through the hinge relationship between folding plate 1 4 and folding plate 2 5, folding plate 1 4 and folding plate 2 5 can be flipped forward, allowing the connecting plate 3 to extend out of the protective box cavity.

[0035] Next, the slot 1.1 on the rear wall of the circuit breaker body 1 is fitted onto the rail 3.1, and then the threaded connector 6.1.1 of the internal threaded sleeve 6.1 is fitted into the screw hole 3.3. With the end cap mechanism located at the right end of the rail 3.1, the circuit breaker body 1 is firmly fixed to the front wall of the connecting plate 3. At this point, the screw 6.2 is completely inside the cavity of the internal threaded sleeve 6.1.

[0036] Push the circuit breaker body 1 backward to fold and reset the first folding plate 4 and the second folding plate 5, thus moving the circuit breaker body 1 into the inner cavity of the protection box. Use a screwdriver to rotate the screw 6.2 through the cross groove 6.2.1 relative to the internal threaded sleeve 6.1, causing the screw 6.2 to unscrew backward. The rear end of the screw 6.2 sequentially engages with the threaded holes 4.3, 4.3, and 2.5. This completes the installation of the circuit breaker body 1.

[0037] When it is necessary to inspect or maintain the circuit breaker body 1, first use a screwdriver to rotate the screw 6.2 in the reverse direction through the cross groove 6.2.1, so that the rear end of the screw 6.2 disengages sequentially from screw holes 2.5, 4.3, and 5.3. Then, the circuit breaker body 1 can be pulled forward, so that the circuit breaker body 1 extends out of the protection box under the support of the folding plate 4, folding plate 5, and connecting plate 3, thereby facilitating inspection and maintenance.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Low voltage distributed photovoltaic intelligent circuit breaker comprising a circuit breaker body (1), characterized in that, Also includes: A fixing plate (2) is provided with protruding plates (2.1) at the middle of both ends of the fixing plate (2), and fixing holes (2.3) are provided in the middle of the protruding plates (2.1); A connecting plate (3) has a transverse guide rail (3.1) on the middle of its front wall; Folding plate one (4), the left end of which is hinged to the left end of the front wall of the fixed plate (2); Folding plate two (5), the right end of the folding plate two (5) is hinged to the right end of the folding plate one (4), and the left end of the folding plate two (5) is hinged to the left end of the rear wall of the connecting plate (3); The rear wall of the circuit breaker body (1) is provided with a slot (1.1) that matches the locking rail (3.1) in the transverse direction.

2. The low voltage, distributed photovoltaic intelligent circuit breaker of claim 1, wherein: The front wall of the connecting plate (3) is provided with a sealing head structure at the right end of the rail (3.1). The front wall of the connecting plate (3) is provided with a screw hole (3.3) near the left end of the rail (3.1). A positioning element (6) is threaded into the screw hole (3.3).

3. The low-voltage distributed photovoltaic intelligent circuit breaker according to claim 2, characterized in that: The positioning component (6) includes an internal threaded sleeve (6.1) and a screw (6.2) threaded inside the internal threaded sleeve (6.1). The front end face of the screw (6.2) is provided with a cross groove (6.2.1), and the rear end of the internal threaded sleeve (6.1) is provided with a threaded connector (6.1.1) that matches the threaded connection of the screw hole (3.3).

4. The low-voltage distributed photovoltaic intelligent circuit breaker according to claim 3, characterized in that: The left side wall of the circuit breaker body (1) is provided with an arc-shaped groove (1.2) that fits against the outer peripheral wall of the internal threaded sleeve (6.1).

5. The low-voltage distributed photovoltaic intelligent circuit breaker according to claim 3, characterized in that: The fixing plate (2), the first folding plate (4), and the second folding plate (5) are respectively provided with screw holes one (2.5), three (4.3), and four (5.3) corresponding to the position of the second screw hole (3.3). The screw holes one (2.5), three (4.3), and four (5.3) are all threadedly matched with the screw rod (6.2).

6. The low-voltage distributed photovoltaic intelligent circuit breaker according to claim 1, characterized in that: The front wall of the convex plate (2.1) is provided with side grooves (2.2) near the outer side, and the fixing holes (2.3) are respectively provided in the middle of the inner rear wall of the side grooves (2.2).

7. The low-voltage distributed photovoltaic intelligent circuit breaker according to claim 1, characterized in that: The fixed plate (2) has an ear plate 1 (2.4) on the left end of the front wall, the folding plate 1 (4) has an ear plate 3 (4.1) hinged to the ear plate 1 (2.4) on the left end of the rear wall, the folding plate 1 (4) has an ear plate 4 (4.2) on the right end, the folding plate 2 (5) has an ear plate 5 (5.1) hinged to the ear plate 4 (4.2) on the right end of the rear wall, the folding plate 2 (5) has an ear plate 6 (5.2) on the left end of the front wall, and the connecting plate (3) has an ear plate 2 (3.2) hinged to the ear plate 6 (5.2) on the left end of the rear wall.

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