Interphase insulation device for photovoltaic grid-connected cabinet

Abstract

The utility model discloses an interphase insulation device used for a photovoltaic grid-connected cabinet, and relates to the technical field of network cabinets, the interphase insulation device used for the photovoltaic grid-connected cabinet comprises four installation assemblies, the four installation assemblies are distributed in a rectangular array mode, and the installation assemblies are arranged in a rectangular array mode. The mounting assembly is used for mounting electrical equipment; the separation assembly is arranged in the inner cavities of the four mounting assemblies, and the separation assembly is used for separating the four mounting assemblies; the sealing assembly is arranged on the outer side of the installation assembly, the sealing assembly is used for supporting the installation assembly and the separation assembly, the sealing assembly comprises a cabinet body, electrical equipment can be installed, all phases can be electrically isolated, and therefore inter-phase short circuit can be prevented; and normal operation of the photovoltaic power generation system can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of grid cabinets, in particular to an interphase insulation device for a photovoltaic grid-connected cabinet. Background Art

[0002] Photovoltaic grid-connected cabinets are key electrical equipment in photovoltaic power generation systems. Their main function is to ensure the safe and reliable connection between the photovoltaic power generation system and the public power grid. They are suitable for distributed photovoltaic power generation projects and large-scale centralized photovoltaic power stations, such as residential households, commercial retail venues, industrial, commercial and public buildings. The interphase insulation device in the photovoltaic grid-connected cabinet is mainly used to ensure good insulation performance between the phases in the circuit, prevent phase short circuits, and ensure the safe and stable operation of the photovoltaic power generation system.

[0003] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: although electrical equipment can be installed, it is inconvenient to electrically isolate the phases, which leads to phase short circuits and reduces safety. Therefore, we propose an interphase insulation device for photovoltaic grid-connected cabinets to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides an interphase insulation device for a photovoltaic grid-connected cabinet, which solves the problem of inconvenient electrical isolation between phases.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an interphase insulation device for a photovoltaic grid-connected cabinet, comprising:

[0006] Mounting components, four of which are provided and arranged in a rectangular array, and are used to install electrical equipment;

[0007] a partition assembly, the partition assembly being disposed in the inner cavities of the four mounting assemblies and being used to separate the four mounting assemblies; and

[0008] A sealing assembly is provided outside the mounting assembly and is used to provide support for the mounting assembly and the partition assembly.

[0009] Preferably, the sealing assembly includes a cabinet body, a cabinet door is provided at the open end of one side surface of the cabinet body, a sealing groove is provided at the center of one side surface of the cabinet body, a sealing strip is provided on one side surface of the cabinet door, and a wire threading hole is provided at the lower position of one side surface of the inner cavity of the cabinet body, and a plurality of the wire threading holes are provided, and the plurality of wire threading holes are distributed in a linear array.

[0010] Preferably, a first insulating plate is provided on the other side of the inner cavity of the cabinet, and the first insulating plate is used to prevent electrical short circuit or leakage.

[0011] Preferably, the partition assembly includes a cross plate, which is arranged in the inner cavity of the cabinet. The lower surfaces of the horizontal and vertical sides of the cross plate are provided with mounting holes. There are multiple mounting holes, and the multiple mounting holes are distributed in a linear array. The inner cavity of each mounting hole is provided with a sealing plate, and the inner cavity of each sealing plate is provided with a sealing plate, and the inner cavity of each sealing plate is provided with an insulating sleeve.

[0012] Preferably, the inner cavity of each cross plate is provided with a second insulating plate, and the second insulating plate is used to enhance interphase insulation.

[0013] Preferably, the mounting assembly includes a mounting plate, which is arranged in the inner cavity of the cabinet. An internal threaded hole is provided on one side surface of the mounting plate. There are multiple internal threaded holes, and the multiple internal threaded holes are distributed in a rectangular array. Three limit frames are provided on one side surface of the mounting plate, and the inner cavities of the three limit frames are all provided with fixing bolts.

[0014] Preferably, one end of each of the limiting frames is provided with a chamfer, and the chamfer is used to facilitate the installation of the electrical equipment.

[0015] Beneficial effects

[0016] The utility model provides a phase-to-phase insulation device for photovoltaic grid-connected cabinets. Compared with the prior art, it has the following advantages:

[0017] The interphase insulation device for photovoltaic grid-connected cabinets, when electrical equipment needs to be installed, first fix the sealing component at a preset position, and then fix the partition component to the inner cavity of the sealing component, so that the sealing component can provide support for the partition component, and then the partition component can divide the inner cavity of the sealing component into four grids, so that the four installation components can be fixedly connected to the inner cavities of the four grids, and then the staff can fix the electrical equipment to the inner cavity of the installation component, so that the partition component can isolate conductors of different phases, thereby enhancing the phase-to-phase insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the sealing component structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the separation component of the utility model;

[0021] Figure 4 This is a schematic diagram of the installation component structure of the utility model.

[0022] In the figure: 1. Sealing assembly; 11. Cabinet body; 12. Cabinet door; 13. Sealing groove; 14. Sealing strip; 15. Threading hole; 16. First insulating plate; 2. Partitioning assembly; 21. Cross plate; 22. Mounting hole; 23. Sealing plate; 24. Insulating sleeve; 25. Second insulating plate; 3. Mounting assembly; 31. Mounting plate; 32. Internal threaded hole; 33. Limiting bracket; 34. Fixing bolt; 35. Chamfer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The utility model provides a technical solution: an interphase insulation device for a photovoltaic grid-connected cabinet, comprising: a mounting assembly 3, wherein four mounting assemblies 3 are provided, and the four mounting assemblies 3 are distributed in a rectangular array, and the mounting assembly 3 is used to install electrical equipment; a partition assembly 2, wherein the partition assembly 2 is provided in the inner cavity of the four mounting assemblies 3, and the partition assembly 2 is used to separate the four mounting assemblies 3; and a sealing assembly 1, wherein the sealing assembly 1 is provided outside the mounting assembly 3, and the sealing assembly 1 is used to provide support for the mounting assembly 3 and the partition assembly 2;

[0025] When electrical equipment needs to be installed, the sealing component 1 is first fixedly connected to a preset position, and then the partition component 2 is fixedly connected to the inner cavity of the sealing component 1, so that the sealing component 1 can provide support for the partition component 2, and then the partition component 2 can divide the inner cavity of the sealing component 1 into four grids, so that the four installation components 3 can be fixedly connected to the inner cavities of the four grids, and then the staff can fix the electrical equipment to the inner cavity of the installation component 3, so that the partition component 2 can isolate the conductors of different phases, and thus ensure electrical isolation between the phases, so as to prevent short circuits between phases.

[0026] See Figure 1 、 Figure 2The sealing assembly 1 includes a cabinet body 11, a cabinet door 12 is provided at an open end of one side surface of the cabinet body 11, a sealing groove 13 is provided at a central position of one side surface of the cabinet body 11, a sealing strip 14 is provided on one side surface of the cabinet door 12, a threading hole 15 is provided at a lower position on one side surface of the inner cavity of the cabinet body 11, a plurality of threading holes 15 are provided, and the plurality of threading holes 15 are distributed in a linear array, and a first insulating plate 16 is provided on the other side of the inner cavity of the cabinet body 11, and the first insulating plate 16 is used to prevent electrical short circuit or leakage;

[0027] The cabinet 11 in the sealing assembly 1 can be placed in a preset position and provide an installation base for the cabinet door 12. Since a sealing groove 13 is provided in the center of one side surface of the cabinet 11, and a sealing strip 14 is fixedly connected to one side surface of the cabinet door 12, the sealing strip 14 can be movably connected to the inner cavity of the sealing groove 13, thereby improving the sealing between the cabinet 11 and the cabinet door 12, so as to prevent moisture and dust from entering the inner cavity of the cabinet 11, thereby improving safety. Since a threading hole 1 is provided at the lower position of the inner cavity of the cabinet 11, the threading hole 1 is provided. 5, and a plurality of wire holes 15 are provided, so that the staff can conveniently pass the wires through the wire holes 15 into the inner cavity of the cabinet 11, and then the wires can be classified, so as to facilitate the connection of electrical equipment. Since the first insulating plate 16 is fixedly connected to the other side of the inner cavity of the cabinet 11, the cabinet 11 can provide support for the first insulating plate 16, and then the conductive parts with different potentials can be connected, so as to prevent electrical short circuit or leakage, and ensure good electrical insulation performance between the various circuits in the photovoltaic grid-connected cabinet and between the circuits and the cabinet.

[0028] See Figure 1 、 Figure 3 The partition assembly 2 includes a cross plate 21, which is arranged in the inner cavity of the cabinet 11. The lower positions of the surfaces on both sides of the horizontal and vertical surfaces of the cross plate 21 are provided with mounting holes 22. There are multiple mounting holes 22, and the multiple mounting holes 22 are distributed in a linear array. A sealing plate 23 is provided in the inner cavity of each mounting hole 22, and a sealing plate 23 is provided in the inner cavity of each sealing plate 23. An insulating sleeve 24 is provided in the inner cavity of each sealing plate 23. A second insulating plate 25 is provided in the inner cavity of the cross plate 21. The second insulating plate 25 is used to enhance the phase-to-phase insulation.

[0029] The cross plate 21 in the partition component 2 can be fixedly connected to the inner cavity of the cabinet 11 and provide an installation base for the mounting hole 22, so that the cabinet 11 can provide support for the cross plate 21, and then the inner cavity of the cabinet 11 can be divided into four parts, so as to prevent the occurrence of phase-to-phase short circuit faults. Since mounting holes 22 are provided on the lower surfaces of both sides of the horizontal and vertical surfaces of the cross plate 21, and the inner cavity of the mounting hole 22 is fixedly connected with a sealing plate 23, and the inner cavity of the sealing plate 23 is embedded with an insulating sleeve 24, the mounting hole 22 can fix the sealing plate 23, and then the sealing plate 23 can limit the insulating sleeve 24, so that the staff can pass the wires through the insulating sleeve 24 to connect the electrical equipment, and then pass through the insulating sleeve 24 to prevent direct contact between the wires, thereby improving the phase-to-phase insulation performance.

[0030] See Figure 1 、 Figure 4 The mounting assembly 3 includes a mounting plate 31, which is arranged in the inner cavity of the cabinet 11. An internal threaded hole 32 is provided on one side of the mounting plate 31. There are multiple internal threaded holes 32, which are distributed in a rectangular array. Three limiting brackets 33 are provided on one side of the mounting plate 31. The inner cavities of the three limiting brackets 33 are all provided with fixing bolts 34. One end of each limiting bracket 33 is provided with a chamfer 35, which is used to facilitate the installation of electrical equipment.

[0031] The mounting plate 31 in the mounting assembly 3 can be fixedly connected to the inner cavity of the cabinet 11 and provide a basis for opening the internal threaded hole 32. Since the surface of one side of the mounting plate 31 is movably connected to the limit frame 33, and the inner cavity of the limit frame 33 is inlaid with a fixing bolt 34, and one end of the fixing bolt 34 is connected to the inner cavity of the internal threaded hole 32, the cabinet 11 can provide support for the mounting plate 31, and the fixing bolt 34 can be rotatably connected to the inner cavity of the internal threaded hole 32, so that the fixing bolt 34 can fix the limit frame 33, and the limit frame 33 can be easily adjusted, so that the installation of the electrical equipment can be easily adjusted. Since one end of the limit frame 33 is provided with a chamfer 35, the electrical equipment can be easily installed, so as to improve convenience.

[0032] During operation, when electrical equipment needs to be installed, the sealing component 1 is first fixedly connected to a preset position, and then the partition component 2 is fixedly connected to the inner cavity of the sealing component 1, so that the sealing component 1 can provide support for the partition component 2, and then the partition component 2 can divide the inner cavity of the sealing component 1 into four grids, so that the four installation components 3 can be fixedly connected to the inner cavities of the four grids, and then the staff can fix the electrical equipment to the inner cavity of the installation component 3, so that the partition component 2 can isolate the conductors of different phases, thereby enhancing the phase-to-phase insulation.

[0033] The cabinet 11 in the sealing assembly 1 can be placed in a preset position and provide an installation base for the cabinet door 12. Since a sealing groove 13 is provided in the center of one side surface of the cabinet 11, and a sealing strip 14 is fixedly connected to one side surface of the cabinet door 12, the sealing strip 14 can be movably connected to the inner cavity of the sealing groove 13, thereby improving the sealing between the cabinet 11 and the cabinet door 12, so as to prevent moisture and dust from entering the inner cavity of the cabinet 11, thereby improving safety. Since a threading hole 1 is provided at the lower position of the inner cavity of the cabinet 11, the threading hole 1 is provided. 5, and a plurality of wire holes 15 are provided, so that the staff can conveniently pass the wires through the wire holes 15 into the inner cavity of the cabinet 11, and then the wires can be classified, so as to facilitate the connection of electrical equipment. Since the first insulating plate 16 is fixedly connected to the other side of the inner cavity of the cabinet 11, the cabinet 11 can provide support for the first insulating plate 16, and then the conductive parts with different potentials can be connected, so as to prevent electrical short circuit or leakage, and ensure good electrical insulation performance between the various circuits in the photovoltaic grid-connected cabinet and between the circuits and the cabinet.

[0034] The cross plate 21 in the partition component 2 can be fixedly connected to the inner cavity of the cabinet 11 and provide an installation base for the mounting hole 22, so that the cabinet 11 can provide support for the cross plate 21, and then the inner cavity of the cabinet 11 can be divided into four parts, so as to prevent the occurrence of phase-to-phase short circuit faults. Since mounting holes 22 are provided on the lower surfaces of both sides of the horizontal and vertical surfaces of the cross plate 21, and the inner cavity of the mounting hole 22 is fixedly connected with a sealing plate 23, and the inner cavity of the sealing plate 23 is embedded with an insulating sleeve 24, the mounting hole 22 can fix the sealing plate 23, and then the sealing plate 23 can limit the insulating sleeve 24, so that the staff can pass the wires through the insulating sleeve 24 to connect the electrical equipment, and then pass through the insulating sleeve 24 to prevent direct contact between the wires, thereby improving the phase-to-phase insulation performance.

[0035] The mounting plate 31 in the mounting assembly 3 can be fixedly connected to the inner cavity of the cabinet 11 and provide a basis for opening the internal threaded hole 32. Since the surface of one side of the mounting plate 31 is movably connected to the limit frame 33, and the inner cavity of the limit frame 33 is inlaid with a fixing bolt 34, and one end of the fixing bolt 34 is connected to the inner cavity of the internal threaded hole 32, the cabinet 11 can provide support for the mounting plate 31, and the fixing bolt 34 can be rotatably connected to the inner cavity of the internal threaded hole 32, so that the fixing bolt 34 can fix the limit frame 33, and the limit frame 33 can be easily adjusted, so that the installation of the electrical equipment can be easily adjusted. Since one end of the limit frame 33 is provided with a chamfer 35, the electrical equipment can be easily installed, so as to improve convenience.

[0036] In summary, the device can not only install electrical equipment, but also electrically isolate the phases, thereby preventing inter-phase short circuits and ensuring the normal operation of the photovoltaic power generation system.

[0037] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A phase-to-phase insulation device for a photovoltaic grid-connected cabinet, characterized by: include: Mounting components (3), four of the mounting components (3) are provided, and the four mounting components (3) are distributed in a rectangular array, and the mounting components (3) are used to install electrical equipment; A partition component (2), the partition component (2) being arranged in the inner cavities of the four mounting components (3), the partition component (2) being used to separate the four mounting components (3); and A sealing assembly (1), wherein the sealing assembly (1) is arranged outside the mounting assembly (3), and the sealing assembly (1) is used to provide support for the mounting assembly (3) and the partition assembly (2).

2. The interphase insulation device for a photovoltaic grid-connected cabinet according to claim 1, characterized in that: The sealing assembly (1) comprises a cabinet body (11), a cabinet door (12) is provided at an open end of one side surface of the cabinet body (11), a sealing groove (13) is provided at a central position of one side surface of the cabinet body (11), a sealing strip (14) is provided on one side surface of the cabinet door (12), and a threading hole (15) is provided at a lower position of one side surface of the inner cavity of the cabinet body (11), and a plurality of threading holes (15) are provided, and the plurality of threading holes (15) are distributed in a linear array.

3. The interphase insulation device for a photovoltaic grid-connected cabinet according to claim 2, characterized in that: A first insulating plate (16) is provided on the other side of the inner cavity of the cabinet (11), and the first insulating plate (16) is used to prevent electrical short circuit or leakage.

4. The interphase insulation device for a photovoltaic grid-connected cabinet according to claim 3, characterized in that: The partition assembly (2) includes a cross plate (21), the cross plate (21) is arranged in the inner cavity of the cabinet (11), and mounting holes (22) are provided at lower positions on both sides of the horizontal and vertical surfaces of the cross plate (21), a plurality of mounting holes (22) are provided, and the plurality of mounting holes (22) are distributed in a linear array, and a sealing plate (23) is provided in the inner cavity of each mounting hole (22), and a sealing plate (23) is provided in the inner cavity of each sealing plate (23), and an insulating sleeve (24) is provided in the inner cavity of each sealing plate (23).

5. The interphase insulation device for a photovoltaic grid-connected cabinet according to claim 4, characterized in that: The inner cavity of each cross plate (21) is provided with a second insulating plate (25), and the second insulating plate (25) is used to enhance interphase insulation.

6. The interphase insulation device for a photovoltaic grid-connected cabinet according to claim 2, characterized in that: The mounting assembly (3) includes a mounting plate (31), the mounting plate (31) being arranged in the inner cavity of the cabinet (11), an inner threaded hole (32) being provided on one side surface of the mounting plate (31), a plurality of the inner threaded holes (32) being provided, and the plurality of the inner threaded holes (32) being distributed in a rectangular array, three limiting frames (33) being provided on one side surface of the mounting plate (31), and fixing bolts (34) being provided in the inner cavities of the three limiting frames (33).

7. The interphase insulation device for a photovoltaic grid-connected cabinet according to claim 6, characterized in that: Each of the limiting frames (33) is provided with a chamfer (35) at one end, and the chamfer (35) is used to facilitate installation of electrical equipment.

Images