A circuit breaker for a photovoltaic power plant

Abstract

The utility model provides a circuit breaker for photovoltaic power station relates to circuit breaker field, including circuit breaker body, the circuit breaker body includes the casing, be provided with manual switching on and off and connecting part on the casing, and manual switching on and off is through manual operation, directly control conduction and disconnect, realize the start -stop of circuit and the manual cut -off when trouble, and connecting part is used for with external circuit, the electrical connection of other equipment. The circuit breaker for photovoltaic power station when taking off the casing, press the slide bar, then pull cylinder A and cylinder B, the slide bar will drive the blocking post to move, and then make the ball no longer be limited by the blocking post, when pulling cylinder A and cylinder B, the ball will retract into the installation cavity under extrusion, at this moment can smoothly take off cylinder A and cylinder B, need not tool to carry out dismounting, and dismounting is more convenient.

Description

Technical Field

[0001] This utility model relates to a circuit breaker, specifically a circuit breaker for photovoltaic power plants, and belongs to the field of circuit breaker technology. Background Technology

[0002] A photovoltaic (PV) power station is a facility that converts solar energy into electrical energy using solar panels. It consists of PV modules, combiner boxes, inverters, and other equipment, and can be divided into centralized and distributed types. Centralized PV stations are mostly built in desert areas and are large-scale; distributed PV stations are mostly installed on rooftops and other locations for local power supply. They are clean and environmentally friendly, reducing fossil fuel consumption and playing an important role in the global energy transition. They are widely built in many parts of Northwest and Eastern my country.

[0003] Circuit breakers are control and protection devices in circuits, capable of switching load current and interrupting fault current. In photovoltaic power plants, they are installed in combiner boxes, inverters, and other components. They can quickly disconnect the circuit in case of short circuits or overloads, protecting the photovoltaic modules and electrical equipment. They also facilitate system start-up, shutdown, and maintenance. They are key components for power transmission and safe operation in photovoltaic power plants, ensuring the stable and reliable conversion of solar energy into electrical energy.

[0004] During periods of high power generation in photovoltaic power plants, circuit breakers are prone to alarming and damage due to heavy loads, requiring frequent maintenance and replacement. In existing technologies, circuit breakers are mostly installed using screws, requiring specialized tools for disassembly and assembly, which is time-consuming and labor-intensive, impacting maintenance efficiency. Therefore, this paper proposes a circuit breaker for photovoltaic power plants. Utility Model Content

[0005] This utility model proposes a circuit breaker for photovoltaic power plants that can be disassembled and installed without tools, making disassembly and assembly convenient.

[0006] This utility model is achieved through the following technical solution: a circuit breaker for a photovoltaic power station, including a circuit breaker body, the circuit breaker body including a housing, the housing being provided with a manual opening and closing mechanism and a connection part, the manual opening and closing mechanism being operated manually to directly control the conduction and disconnection, realizing the start and stop of the circuit and manual disconnection in case of fault, the connection part being used for electrical connection with external circuits and other equipment.

[0007] It also includes a disassembly and assembly mechanism, which is installed on the circuit breaker body. The disassembly and assembly mechanism also includes a limiting groove and a limiting hole. The limiting hole penetrates the housing, and the limiting groove is opened on the limiting hole. The cylinder B is movably installed in the limiting hole, and the cylinder A is movably installed in the limiting groove.

[0008] The disassembly and assembly mechanism includes a cylinder A and a cylinder B, which are mounted on the housing. A ball bearing is mounted on the cylinder A. The disassembly and assembly mechanism also includes an installation cavity, which is located on the cylinder A. The ball bearing is movably mounted inside the cylinder A through the installation cavity. The ball bearing can move within the installation cavity but cannot leave the installation cavity.

[0009] The cylinders A and B are provided with limiting components for limiting the movement of the ball bearings. The limiting components include a slide rod, which is slidably connected to cylinders A and B. A stop post is fixed to one end of the slide rod inside cylinder A. When the stop post corresponds to the position of the ball bearing, the stop post will limit the movement of the ball bearing, preventing it from moving into the inner side of cylinder A and causing part of the ball bearing to protrude from cylinder A. The stop post is slidably connected to the inner side of cylinder A. A reset component is provided between the slide rod and cylinder A.

[0010] The reset component includes a fixed ring A and a fixed ring B. The fixed ring A is fixed inside the cylinder A, and the fixed ring B is fixed on the slide rod. An elastic element is fixed between the fixed ring A and the fixed ring B. A button is fixed to the end of the slide rod away from the cylinder A. A fixing block is fixed on the cylinder B. When the slide rod moves, it will drive the fixed ring B to move. The fixed ring B can squeeze the elastic element, causing the elastic element to deform. The elastic force of the elastic element will drive the slide rod to reset.

[0011] This utility model provides a circuit breaker for photovoltaic power plants, which has the following beneficial effects:

[0012] 1. When removing the casing of the circuit breaker used in photovoltaic power stations, press the sliding rod and then pull cylinder A and cylinder B. The sliding rod will move the stop column, so that the ball bearings are no longer limited by the stop column. When pulling cylinder A and cylinder B, the ball bearings will be squeezed and retract into the installation cavity. At this time, cylinder A and cylinder B can be removed smoothly. Disassembly and assembly can be carried out without tools, which is quite convenient. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the internal structure of the cylinder A of this utility model;

[0016] Figure 4 This is a schematic diagram of the cylinder and cylinder B structure of this utility model;

[0017] Figure 5This is a schematic diagram of the fixing block and button structure of this utility model.

[0018] Explanation of reference numerals in the attached figures

[0019] 1. Circuit breaker body; 101. Unit body; 102. Manual opening and closing mechanism; 103. Connection parts;

[0020] 2. Assembly / disassembly mechanism; 201. Cylinder A; 202. Cylinder B; 203. Limiting groove; 204. Ball bearing; 205. Mounting cavity; 206. Slide rod; 207. Stop post; 208. Fixing ring A; 209. Fixing ring B; 210. Elastic element; 211. Fixing block; 212. Button; 213. Limiting hole;

[0021] 3. Install components. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0023] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3 Please see Figures 1-5 The present invention proposes the following implementation scheme: a circuit breaker for a photovoltaic power station, including a circuit breaker body 1, the circuit breaker body 1 including a housing 101, the housing 101 being provided with a manual opening and closing switch 102 and a connection part 103, the manual opening and closing switch 102 being manually operated to directly control the conduction and disconnection, realizing the start and stop of the circuit and manual disconnection in case of fault, the connection part 103 being used for electrical connection with external circuits and other equipment.

[0024] It also includes a disassembly and assembly mechanism 2, which is installed on the circuit breaker body 1. The disassembly and assembly mechanism 2 also includes a limiting groove 203 and a limiting hole 213. The limiting hole 213 penetrates the housing 101, and the limiting groove 203 is opened on the limiting hole 213. The cylinder B202 is movably installed in the limiting hole 213, and the cylinder A201 is movably installed in the limiting groove 203.

[0025] The disassembly and assembly mechanism 2 includes a cylinder A201 and a cylinder B202, which are mounted on the housing 101. A ball bearing 204 is mounted on the cylinder A201. The disassembly and assembly mechanism 2 also includes a mounting cavity 205, which is formed on the cylinder A201. The ball bearing 204 is movably mounted in the cylinder A201 through the mounting cavity 205. The ball bearing 204 can move within the mounting cavity 205, but it cannot leave the mounting cavity 205.

[0026] The cylinders A201 and B202 are provided with limiting components for limiting the ball 204. The limiting components include a slide rod 206, which is slidably connected to the cylinders A201 and B202. A stop post 207 is fixed on one end of the slide rod 206 inside the cylinder A201. When the stop post 207 corresponds to the position of the ball 204, the stop post 207 will limit the ball 204, preventing the ball 204 from moving into the inside of the cylinder A201, so that part of the ball 204 protrudes from the cylinder A201. The stop post 207 is slidably connected to the inside of the cylinder A201. A reset component is provided between the slide rod 206 and the cylinder A201.

[0027] The reset component includes a retaining ring A208 and a retaining ring B209. The retaining ring A208 is fixed inside the cylinder A201, and the retaining ring B209 is fixed on the slide rod 206. An elastic element 210 is fixed between the retaining rings A208 and B209. A button 212 is fixed to the end of the slide rod 206 away from the cylinder A201. A fixing block 211 is fixed on the cylinder B202. When the slide rod 206 moves, it will drive the retaining ring B209 to move. The retaining ring B209 can squeeze the elastic element 210, causing the elastic element 210 to deform. The elastic force of the elastic element 210 will drive the slide rod 206 to reset.

[0028] Working principle: When the housing 101 needs to be removed, press the slide bar 206 and then pull the cylinder A201 and cylinder B202. In the specific operating room, press the slide bar 206 through the button 212 and pull the cylinder B202 and cylinder A201 through the fixing block 211.

[0029] The movement of the slide bar 206 will cause the stop post 207 to move, thereby freeing the ball bearing 204 from the limit of the stop post 207. When the cylinder A201 and cylinder B202 are pulled, the ball bearing 204 is squeezed, and the part of the ball bearing 204 protruding from the cylinder A201 will retract into the mounting cavity 205. At this time, the cylinder A201 and cylinder B202 can be removed smoothly without tools, making disassembly and assembly convenient.

[0030] When installing the housing 101, first press the slide bar 206 so that the stop post 207 moves away from the ball bearing 204. At this time, the ball bearing 204 will not be limited by the stop post 207. Insert the cylinder A201 into the limiting groove 203 until the cylinder B202 abuts against the limiting hole 213. During the above process, the ball bearing 204 will be squeezed, and part of the ball bearing 204 will move to the inside of the cylinder A201. When the cylinder B202 abuts against the limiting hole 213, release the slide bar 206. Under the elastic force of the elastic element 210, the stop post 207 will be reset, and the ball 204 will be moved to the cylinder A201 through the stop post 207 and squeezed out, so that part of the ball 204 protrudes out of the cylinder A201. The housing 101 is fixed by the protruding ball 204, cylinder A201, cylinder B202 and mounting component 3. The whole installation process only requires pressing the slide bar 206 and inserting the cylinder A201 into the limiting groove 203, which is relatively convenient.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A circuit breaker for a photovoltaic power station, comprising a circuit breaker body (1), characterized in that: It also includes a disassembly and assembly mechanism (2), which is disposed on the circuit breaker body (1); The disassembly and assembly mechanism (2) includes a cylinder A (201) and a cylinder B (202), which are mounted on the housing (101). A ball bearing (204) is mounted on the cylinder A (201), and a limiting component for limiting the ball bearing (204) is mounted on the cylinder A (201) and the cylinder B (202).

2. A circuit breaker for a photovoltaic power station according to claim 1, characterized in that: The circuit breaker body (1) includes a housing (101), on which a manual opening and closing mechanism (102) and a connection part (103) are provided.

3. A circuit breaker for a photovoltaic power station according to claim 1, characterized in that: The disassembly and assembly mechanism (2) further includes a limiting groove (203) and a limiting hole (213). The limiting hole (213) penetrates the housing (101). The limiting groove (203) is opened on the limiting hole (213). The cylinder B (202) is movably disposed in the limiting hole (213). The cylinder A (201) is movably disposed in the limiting groove (203).

4. A circuit breaker for a photovoltaic power station according to claim 1, characterized in that: The disassembly and assembly mechanism (2) further includes an installation cavity (205), which is located on the cylinder A (201). The ball bearing (204) is movably disposed in the cylinder A (201) through the installation cavity (205).

5. A circuit breaker for a photovoltaic power station according to claim 1, characterized in that: The limiting component includes a slide rod (206), which is slidably connected to cylinder A (201) and cylinder B (202). A stop post (207) is fixed on one end of the slide rod (206) inside cylinder A (201). A reset component is provided between the slide rod (206) and cylinder A (201).

6. A circuit breaker for a photovoltaic power station according to claim 5, characterized in that: The reset component includes a fixing ring A (208) and a fixing ring B (209). The fixing ring A (208) is fixed inside the cylinder A (201), and the fixing ring B (209) is fixed on the slide rod (206). An elastic element (210) is fixed between the fixing ring A (208) and the fixing ring B (209).

7. A circuit breaker for a photovoltaic power station according to claim 5, characterized in that: A button (212) is fixed to one end of the slide bar (206) away from the cylinder A (201), and a fixing block (211) is fixed on the cylinder B (202).

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