Grid-connected cabinet with phase sequence protection

Abstract

The utility model belongs to the technical field of grid-connected cabinet equipment, and discloses a grid-connected cabinet with phase sequence protection, which comprises a cabinet body, a cabinet frame is arranged in the cabinet body, a protection device is arranged on the cabinet frame, the protection device comprises a mounting plate, the upper surface of the mounting plate is fixedly connected with a wire arrangement box, the lower surface of a case is fixedly connected with a motor, and the motor is fixedly connected with a power supply. The output end of the motor is fixedly connected with a first rotating rod, the other end of the first rotating rod is fixedly connected with a first threaded ring, the outer side of the first threaded ring is in meshed connection with two sets of second threaded rings, and the other ends of the two sets of second threaded rings are fixedly connected with rubber rods; various connecting wires in the grid-connected cabinet are placed at the notch of the wire arrangement groove, and the connecting wires are conveyed into the wire arrangement groove through the transmission of the rubber rod, so that the winding of the wires in the grid-connected cabinet is reduced, an operator can conveniently identify the positive electrode and the negative electrode of the electric property, the condition that the phase sequence of a power supply is reversely connected is avoided, and the service life of various electric appliances in the grid-connected cabinet is prolonged.

Description

Technical Field

[0001] This application relates to the field of grid-connected cabinet equipment technology, and more specifically, to a grid-connected cabinet with built-in phase sequence protection. Background Technology

[0002] A grid-connected cabinet is a type of electrical equipment used to connect multiple generators or power sources to the power grid. Its main function is to control and balance current, voltage, and frequency to ensure the stability and security of the power grid. Simultaneously, as the main outlet, the grid-connected cabinet connects the photovoltaic power station and the power grid, and has the functions of protecting and metering the total photovoltaic power generation. It also supports fault diagnosis and maintenance management, improving the safety and economic efficiency of the power generation system.

[0003] Most grid-connected cabinets on the market currently lack phase sequence protection. For example, Chinese patent (authorization announcement number CN207994427U) discloses a grid-connected cabinet including a cabinet body. The cabinet body has a hollow rectangular structure, and a cooling fan is installed on the inner wall of the top of the cabinet body. Symmetrically arranged filter holes are provided on both side walls of the cabinet body. A baffle is rotatably connected to the side wall of the cabinet body above the filter holes. Symmetrically arranged insertion holes are arranged at equal intervals along the length of the baffle on both side walls. Two symmetrically arranged support rods are rotatably connected to the side wall of the cabinet body below the filter holes. Insertion rods are connected to the ends of the support rods away from the cabinet body, and the insertion rods are slidably connected to the insertion holes. This utility model has a novel structure, making the filter plate easy to install and remove, allowing for timely replacement of the filter plate, improving the heat dissipation effect of the device. Furthermore, the device can achieve a moisture-proof effect when not in use, extending its service life.

[0004] Regarding the aforementioned technologies, the inventors believe that there are various power equipment protection devices in the grid-connected cabinet, and various connecting wires are tangled in the grid-connected cabinet, which can easily lead to difficulties in identifying the positive and negative of the wires and the reversed power phase sequence. At the same time, the tangled and intertwined wires may also cause defects such as electrical faults and electrical short circuits. Utility Model Content

[0005] To address the aforementioned issues, this application provides a grid-connected cabinet with built-in phase sequence protection.

[0006] The grid-connected cabinet with built-in phase sequence protection provided in this application adopts the following technical solution:

[0007] A grid-connected cabinet with built-in phase sequence protection includes a cabinet body, an internal cabinet frame, and a protective device. The protective device includes a mounting plate, a cable tray box fixedly connected to the upper surface of the mounting plate, a cavity inside the cable tray box, a cable tray groove on the lower surface inside the cable tray box, a control box fixedly connected to the top of the cable tray box, a cylinder fixedly connected to the inside of the control box, a telescopic rod fixedly connected to the output end of the cylinder, a connecting rod at the other end of the telescopic rod, a chassis fixedly connected to the other end of the connecting rod, a motor fixedly connected to the lower surface of the chassis, a first rotating rod fixedly connected to the output end of the motor, a first threaded ring fixedly connected to the other end of the first rotating rod, a second threaded ring meshing with the outer side of the first threaded ring, and two sets of the second threaded ring, each with a rubber rod fixedly connected to its other end.

[0008] Furthermore, the cabinet frame and protective device are each provided in four sets, arranged vertically inside the cabinet, and the mounting plate installs the protective device on the cabinet frame through flanges.

[0009] The above technical solution utilizes multiple sets of protection devices to separate the connection lines of various electrical equipment. By installing the protection devices on the cabinet frame using flanges, it serves both to fix the equipment in place and to facilitate disassembly and installation by staff.

[0010] Furthermore, a limiting groove is provided above the cavity in the cable box, and a limiting block is provided on the outside of the chassis, with the limiting block movably installed inside the limiting groove.

[0011] With the above technical solution, when the cylinder drives the telescopic rod at its output end to move, the telescopic rod can drive the connecting rod and the chassis installed on one side of the connecting rod to move. The limiting block on the outside of the chassis is set inside the limiting groove to prevent the chassis from shifting position during left and right movement, thus avoiding the phenomenon of wiring error.

[0012] Furthermore, a workpiece is fixedly connected to the bottom end of the motor. The workpiece is U-shaped, and the rubber rods are all installed inside the workpiece.

[0013] With the above technical solution, the workpiece is set in an inverted U-shape, which makes it convenient for the rubber rods to be installed on both sides inside the workpiece.

[0014] Furthermore, the rubber rod is arranged in a figure-eight shape on the outside of the cable tray.

[0015] Through the above technical solution, the bottom end of the rubber plate is movably installed on both sides of the inside of the workpiece. When the motor drives the first rotating rod installed at its output end to rotate, the first rotating rod drives the first threaded ring to rotate. The second threaded ring meshes with the first threaded ring, thereby driving the second threaded ring to rotate, causing the rubber rod installed at the axis of the second threaded ring to rotate. Various connecting wires in the grid-connected cabinet are placed between the rubber rods, and the connecting wires are transported to the cable tray through the transmission of the rubber rods.

[0016] Furthermore, a control panel is fixedly connected to the outside of the cabinet, and the control panel is electrically connected to the cylinder and the motor. A heat dissipation window is provided on the outside of the cabinet.

[0017] The above technical solution utilizes the electrical connection between the control panel and the cylinder and motor to control the operation of the cylinder and motor. When multiple sets of electrical equipment are stored in the grid-connected cabinet, the temperature inside the cabinet will rise. The heat dissipation window can alleviate the temperature inside the cabinet and reduce the possibility of electrical failures caused by temperature to a certain extent.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] When the cylinder drives the telescopic rod at its output end, the telescopic rod can drive the connecting rod and the chassis installed on one side of the connecting rod to move. The limit block on the outside of the chassis is set inside the limit groove to prevent the chassis from shifting position during left and right movement, avoiding the phenomenon of wiring error. Various connecting wires in the grid-connected cabinet are placed at the slot of the wiring trough. When the motor drives the first rotating rod installed at its output end to rotate, the first rotating rod drives the first threaded ring to rotate. The second threaded ring meshes with the first threaded ring, thereby driving the second threaded ring to rotate, causing the rubber rod installed at the axis of the second threaded ring to rotate. Through the transmission of the rubber rod, the connecting wires are transported to the wiring trough, reducing the tangling of wires in the grid-connected cabinet, making it easier for operators to identify the positive and negative terminals of the electrical circuit, avoiding the situation of reversed power phase sequence, and extending the service life of various electrical appliances in the grid-connected cabinet. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a grid-connected cabinet with built-in phase sequence protection;

[0021] Figure 2 This is a schematic diagram of the protective device structure in this application;

[0022] Figure 3 This is a schematic diagram showing the positional relationship between the cylinder and the connecting rod in this application;

[0023] Figure 4 This is a schematic diagram showing the positional relationship between the first threaded ring and the second threaded ring in this application.

[0024] Explanation of the labels in the diagram:

[0025] 1. Cabinet; 2. Cabinet frame; 3. Protective device; 4. Mounting plate; 5. Cable tray; 6. Cavity; 7. Cable tray; 8. Control box; 9. Cylinder; 10. Telescopic rod; 11. Connecting rod; 12. Chassis; 13. Motor; 14. First rotating rod; 15. First threaded ring; 16. Second threaded ring; 17. Rubber rod; 18. Limiting groove; 19. Limiting block; 20. Workpiece; 21. Control panel. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] Example 1:

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a grid-connected cabinet with built-in phase sequence protection. Please refer to [link / reference]. Figure 1The system includes a cabinet 1, a cabinet frame 2 inside the cabinet 1, a protective device 3 on the cabinet frame 2, a mounting plate 4, a cable tray 5 fixedly connected to the upper surface of the mounting plate 4, a cavity 6 inside the cable tray 5, a cable tray groove 7 on the lower surface inside the cable tray 5, a control box 8 fixedly connected to the top of the cable tray 5, a cylinder 9 fixedly connected to the inside of the control box 8, a telescopic rod 10 fixedly connected to the output end of the cylinder 9, a connecting rod 11 at the other end of the telescopic rod 10, a chassis 12 fixedly connected to the other end of the connecting rod 11, a motor 13 fixedly connected to the lower surface of the chassis 12, a first rotating rod 14 fixedly connected to the output end of the motor 13, a first threaded ring 15 fixedly connected to the other end of the first rotating rod 14, a second threaded ring 16 meshing with the outer side of the first threaded ring 15, and two sets of the second threaded ring 16, each with a rubber rod 17 fixedly connected to its other end.

[0032] The cabinet frame 2 and the protection device 3 are each equipped with four sets, which are arranged vertically inside the cabinet 1. The mounting plate 4 installs the protection device 3 on the cabinet frame 2 through the flange. The multiple sets of protection devices 3 can separate the connection lines of various electrical equipment. Installing the protection device 3 on the cabinet frame 2 through the flange serves to fix it and facilitates disassembly and installation by the staff.

[0033] The cable tray 5 is located above the cavity 6 and has a limiting groove 18. The outer side of the chassis 12 is provided with a limiting block 19, which is movably installed inside the limiting groove 18. When the cylinder 9 drives the telescopic rod 10 at its output end to move, the telescopic rod 10 can drive the connecting rod 11 and the chassis 12 installed on one side of the connecting rod 11 to move. The limiting block 19 on the outer side of the chassis 12 is located inside the limiting groove 18 to prevent the chassis 12 from shifting position during left and right movement, thus avoiding cable routing errors.

[0034] The bottom end of the motor 13 is fixedly connected to the workpiece 20, which is in the shape of an inverted U-shape. All rubber rods 17 are installed inside the workpiece 20. The workpiece 20 is set in the shape of an inverted U-shape to facilitate the installation of the rubber rods 17 on both sides inside the workpiece 20.

[0035] The rubber rod 17 is arranged in a figure-eight shape on the outside of the cable tray 7. The bottom end of the rubber plate is movably installed on both sides of the inside of the workpiece 20. When the motor 13 drives the first rotating rod 14 installed at its output end to rotate, the first rotating rod 14 drives the first threaded ring 15 to rotate. The second threaded ring 16 meshes with the first threaded ring 15, thereby driving the second threaded ring 16 to rotate, causing the rubber rod 17 installed at the axis of the second threaded ring 16 to rotate. Various connecting wires in the grid-connected cabinet are placed between the rubber rods 17. The connecting wires are transported to the cable tray 7 through the transmission of the rubber rods 17.

[0036] A control panel 21 is fixedly connected to the outside of the cabinet 1. The control panel 21 is electrically connected to the cylinder 9 and the motor 13. A heat dissipation window is provided on the outside of the cabinet 1. The control panel 21 is electrically connected to the cylinder 9 and the motor 13 to control the operation of the cylinder 9 and the motor 13. When multiple sets of electrical equipment are stored in the grid-connected cabinet, the temperature inside the cabinet 1 will rise. The heat dissipation window can alleviate the temperature inside the cabinet 1 and reduce the possibility of electrical failure caused by temperature to a certain extent.

[0037] The implementation principle of a grid-connected cabinet with built-in phase sequence protection in this application embodiment is as follows: When the cylinder 9 drives the telescopic rod 10 at its output end to move, the telescopic rod 10 can drive the connecting rod 11 and the chassis 12 installed on one side of the connecting rod 11 to move. The limiting block 19 on the outside of the chassis 12 is set inside the limiting groove 18 to prevent the chassis 12 from shifting position during left and right movement, thus avoiding the phenomenon of wiring error. Various connecting wires in the grid-connected cabinet are placed at the slot of the wiring groove 7. When the motor 13 drives the first rotating rod 14 installed at its output end to rotate, the first rotating rod 14 drives the first threaded ring 15 to rotate. The second threaded ring 16 meshes with the first threaded ring 15, thereby driving the second threaded ring 16 to rotate, causing the rubber rod 17 installed at the axis of the second threaded ring 16 to rotate. Through the transmission of the rubber rod 17, the connecting wires are transported to the wiring groove 7, reducing the tangling of wires in the grid-connected cabinet, making it easier for operators to identify the positive and negative terminals of the electrical circuit, avoiding the situation of reversed power phase sequence, and extending the service life of various electrical appliances in the grid-connected cabinet.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grid-connected cabinet with built-in phase sequence protection, comprising a cabinet body (1), characterized in that: The cabinet (1) is equipped with a cabinet frame (2) inside. The cabinet frame (2) is equipped with a protective device (3). The protective device (3) includes a mounting plate (4). A cable tray (5) is fixedly connected to the upper surface of the mounting plate (4). A cavity (6) is opened inside the cable tray (5). A cable tray groove (7) is opened on the lower surface inside the cable tray (5). A control box (8) is fixedly connected to the top of the cable tray (5). A cylinder (9) is fixedly connected inside the control box (8). A telescopic rod (10) is fixedly connected to the output end of the cylinder (9). The telescopic rod (10) is provided with a connecting rod (11) at the other end. The connecting rod (11) is fixedly connected to a housing (12). A motor (13) is fixedly connected to the lower surface of the housing (12). A first rotating rod (14) is fixedly connected to the output end of the motor (13). A first threaded ring (15) is fixedly connected to the other end of the first rotating rod (14). A second threaded ring (16) is engaged with the outer side of the first threaded ring (15). The second threaded ring (16) is provided with two sets, each of which is fixedly connected to a rubber rod (17) at its other end.

2. A grid-connected cabinet with built-in phase sequence protection according to claim 1, characterized in that: The cabinet frame (2) and the protective device (3) are each provided in four sets, arranged vertically inside the cabinet (1). The mounting plate (4) installs the protective device (3) on the cabinet frame (2) through a flange.

3. A grid-connected cabinet with built-in phase sequence protection according to claim 1, characterized in that: The cable box (5) is located above the cavity (6) and has a limiting groove (18). A limiting block (19) is provided on the outside of the chassis (12) and the limiting block (19) is movably installed inside the limiting groove (18).

4. A grid-connected cabinet with built-in phase sequence protection according to claim 1, characterized in that: The bottom end of the motor (13) is fixedly connected to the workpiece (20), which is in the shape of an inverted U-shape, and the rubber rods (17) are all installed inside the workpiece (20).

5. A grid-connected cabinet with built-in phase sequence protection according to claim 1, characterized in that: The rubber rod (17) is arranged in a figure-eight shape on the outside of the cable tray (7).

6. A grid-connected cabinet with built-in phase sequence protection according to claim 1, characterized in that: A control panel (21) is fixedly connected to the outside of the cabinet (1). The control panel (21) is electrically connected to the cylinder (9) and the motor (13). A heat dissipation window is provided on the outside of the cabinet (1).

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