Anti-electromagnetic cabinet for reactive power compensation device

Abstract

The invention discloses an anti-electromagnetic cabinet for a reactive power compensation device, which comprises a first cabinet, a second cabinet, an anti-electromagnetic filtering device and a fan, the second cabinet is erected in the inner cavity of the first cabinet, and the upper end surfaces of the second cabinet and the first cabinet are both provided with first air ports which are communicated with each other; second air ports are further formed in the two sides of the upper end face of the second cabinet, third air ports are formed in the lower portion of the side end face of the first cabinet, installation openings are formed in the front ends of the first cabinet and the second cabinet and hinged to cabinet doors, anti-electromagnetic filtering devices are arranged in the first air ports and at the third air ports, fans are further arranged at the first air ports, and the first air ports are communicated with the second air ports. Through the arrangement of the inner cabinet and the outer cabinet, the anti-electromagnetic interference performance is improved, meanwhile, the heat dissipation performance of the inner cabinet is improved, the anti-electromagnetic interference effect is provided while the heat dissipation effect is met, and normal operation of internal devices is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of automated machinery, and in particular to an anti-electromagnetic cabinet for a reactive power compensation device. Background Art

[0002] Intelligent reactive power compensation device, also known as intelligent capacitor, is a new generation of reactive power compensation equipment used in low-voltage power grid. Intelligent reactive power compensation device consists of CPU measurement and control unit, inrush current switching switch, protection device and low-voltage self-healing power capacitor, which together constitute an independent and complete intelligent compensation unit. This device replaces the traditional automatic reactive power compensation device assembled from a variety of scattered components, such as intelligent reactive power controller, fuse, thyristor composite switch or contactor, thermal relay indicator light, low-voltage power capacitor, etc.

[0003] Intelligent reactive power compensation devices have automatic control functions and can automatically measure, analyze and adjust reactive power in the power system without human intervention, thus improving work efficiency. In certain specific power grid environments, such as where voltage fluctuations are large or harmonic pollution is severe, the performance of the reactive power compensation intelligent device may be affected and appropriate measures need to be taken for protection. Improving resistance to electromagnetic interference is one way to solve this problem. Summary of the invention

[0004] The main purpose of the present invention is to provide an anti-electromagnetic cabinet for a reactive compensation device.

[0005] To achieve the above object, the technical solution adopted by the present invention is: An anti-electromagnetic cabinet for a reactive compensation device comprises a first cabinet, a second cabinet, an anti-electromagnetic filtering device and a fan. The second cabinet is fixedly mounted in the inner cavity of the first cabinet by a fixed connecting piece. The second cabinet and the upper end surface of the first cabinet are both provided with a first air outlet. The second cabinet is connected to the first air outlet of the first cabinet. Second air outlets are also provided on both sides of the upper end surface of the second cabinet. A third air outlet is provided on the lower side end surface of the first cabinet. The front ends of the first cabinet and the second cabinet are provided with an installation opening, which is hinged with a cabinet door. The anti-electromagnetic filtering device is arranged in the first air outlet, and a fan is also arranged at the first air outlet. The anti-electromagnetic filtering device is also fixedly arranged at the third air outlet. The anti-electromagnetic filtering device comprises an external fixed frame, an anti-electromagnetic interference sponge layer, an upper fixed partition, an adjustment slide rail and a locking piece.

[0006] Furthermore, a accommodating cavity is provided on the upper end surface of the external fixed frame, an anti-electromagnetic interference sponge layer is slidably installed in the accommodating cavity, and a plurality of flow holes arranged in an array are provided at the bottom of the accommodating cavity, a mounting groove is provided on the inner wall of the accommodating cavity, and the mounting groove passes through one side wall of the external fixed frame, an upper fixed partition is slidably installed in the mounting groove, at least one group of adjusting slide rails is fixedly installed on a side of the external fixed frame away from the accommodating cavity, the group of adjusting slide rails includes two vertically arranged adjusting slide rails, a locking piece is slidably connected to the adjusting slide rail, and the locking piece is provided with at least one locking hole, and the front and back sides of the anti-electromagnetic interference sponge layer are coated with a nano-coating.

[0007] Furthermore, an upper cover assembly is fixedly installed on the upper end surface of the first cabinet, and the upper cover assembly is arranged directly above the first air outlet. The upper cover assembly includes a support frame and an upper baffle, and the upper baffle is in an inverted V shape. The lower end surface of the upper baffle is fixedly installed on the upper end surface of the first cabinet through the support frame, and the upper baffle completely covers the first air outlet.

[0008] Furthermore, a waterproof grille plate is provided on the first cabinet at the third air outlet, and the waterproof grille plate is integrally formed with the first cabinet or is fixed with screws.

[0009] Furthermore, the anti-electromagnetic interference sponge layer is made of anti-electromagnetic interference sponge, and the anti-electromagnetic interference sponge layer includes an anti-electromagnetic interference sponge body and a conductive wire layer, and the conductive wire layer is formed by a plurality of conductive metal wires arranged in parallel.

[0010] Furthermore, the conductive wire layer is formed by a plurality of conductive metal wires arranged in a crisscross pattern, and a certain gap is provided between the conductive metal wires in the same direction.

[0011] Furthermore, the components of the anti-electromagnetic interference sponge include: Polyurethane matrix 75%-85%; Carbon nanotubes 5%-10%; Metal powder 5%-10%; Antistatic agent 0.1%-0.5%; Foaming agent 2%-5%; Coupling agent 2%-5%; Other components 0.5%-1%.

[0012] Furthermore, the metal powder is a nanopowder prepared from a conductive metal such as gold, silver, copper, and aluminum, or a mixture of nanopowders prepared from multiple metals.

[0013] Furthermore, the carbon nanotube has a diameter of 15-20 nanometers and is a spiral carbon nanotube.

[0014] Furthermore, the upper fixed partition includes a partition fixing frame and grille bars. A connecting cavity penetrating the partition fixing frame is provided at the center of the partition fixing frame. A plurality of grille bars with equal spacing are fixedly installed in the connecting cavity, and the grille bars are inclined.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention solves the problem of anti-interference performance of intelligent reactive power compensation device when used in situations where electromagnetic voltage fluctuation is large or harmonic pollution is serious. At the same time, rapid heat dissipation of the internal cabinet is achieved through the setting of internal and external cabinets of the present application and air circulation channels between the cabinets.

[0016] At the same time, without affecting the heat dissipation and exhaust effects of the overall structure, the anti-electromagnetic performance of the sponge itself and the conductive wire layer arranged therein further solve the anti-electromagnetic gap between the air inlet and the air outlet, and improve the anti-electromagnetic interference performance. At the same time, the conductive wire layer can also increase the overall structural stability of the sponge layer, and the nano-coating can further improve the sponge's anti-aging, anti-electromagnetic and weather resistance, and can also play a certain water-blocking role. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view internal cross-sectional schematic diagram of the present invention; Figure 2 It is a front schematic diagram of the anti-electromagnetic filtering device of the present invention without the anti-electromagnetic interference sponge layer; Figure 3 It is a front schematic diagram of the anti-electromagnetic filtering device of the present invention without the anti-electromagnetic interference sponge layer and the upper fixed partition; Figure 4 It is a schematic diagram of the back structure of the anti-electromagnetic filtering device of the present invention without the anti-electromagnetic interference sponge layer; Figure 5 It is a side schematic diagram of the anti-electromagnetic filtering device of the present invention without the anti-electromagnetic interference sponge layer and the upper fixed partition; Figure 6 It is a schematic diagram of the front cross-section of the anti-electromagnetic interference sponge layer of the present invention; Figure 7 This is a front cross-sectional schematic diagram of Example 2 of the anti-electromagnetic interference sponge layer of the present invention; Figure 8 It is a side cutaway schematic diagram of the anti-electromagnetic interference sponge layer of the present invention.

[0018] Reference numerals: 1. First cabinet; 2. Second cabinet; 3. Anti-electromagnetic filtering device; 4. Fan; 5. First air outlet; 6. Second air outlet; 7. Third air outlet; 8. External fixed frame; 9. Anti-electromagnetic interference sponge layer; 10. Upper fixed partition; 11. Adjustment slide rail; 12. Locking piece; 13. Flow hole; 14. Card slot; 15. Locking hole; 16. Upper cover assembly; 17. Support frame; 18. Upper baffle; 19. Anti-electromagnetic interference sponge body; 20. Conductive wire layer; 21. Partition fixing frame; 22. Grille bar. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Example 1

[0020] See also Figure 1-6 and Figure 8 As shown, an anti-electromagnetic cabinet for a reactive compensation device comprises a first cabinet 1, a second cabinet 2, an anti-electromagnetic filter device 3 and a fan 4. The second cabinet 2 is fixedly mounted in the inner cavity of the first cabinet 1 through a fixed connector. The second cabinet 2 and the upper end surface of the first cabinet 1 are both provided with a first air outlet 5. The second cabinet 2 is connected to the first air outlet 5 of the first cabinet 1. Second air outlets 6 are also provided on both sides of the upper end surface of the second cabinet 2. A third air outlet 7 is provided below the side end surface of the first cabinet 1. The front ends of the first cabinet 1 and the second cabinet 2 are provided with an installation opening, which is hinged with a cabinet door. The anti-electromagnetic filter device 3 is arranged in the first air outlet 5. The fan 4 is also arranged at the first air outlet 5. The anti-electromagnetic filter device 3 is also fixedly arranged at the third air outlet 7. The anti-electromagnetic filter device 3 comprises an external fixed frame 8, an anti-electromagnetic interference sponge layer 9, an upper fixed partition plate 10, an adjustment slide rail 11 and a locking piece 12.

[0021] There is an air circulation space between the first cabinet 1 and the second cabinet 2, especially between the side end surfaces of the first cabinet 1 and the second cabinet 2, and the air circulation space is connected to the second air outlet 6 and the third air outlet 7. When working, the fan 4 extracts air. There are two types of exhaust here. One is to extract air into the machine through the first air outlet 5, and the second is to discharge the air in the machine to the outside of the first air outlet 5.

[0022] Both working modes can quickly allow air to flow through the air circulation space, thereby taking away the temperature inside the second cabinet 2, thereby achieving a cooling effect. At the same time, the humidity inside the cabinet can be controlled through the anti-electromagnetic filter device 3. There are two aspects of humidity control. The first aspect is the water absorption of the sponge, and the second aspect is the presence of the nano-coating. The nano-coating is a coating formed by a waterproof paint that isolates water vapor from the outside.

[0023] The upper end surface of the external fixed frame 8 is provided with a accommodating cavity, in which an anti-electromagnetic interference sponge layer 9 is slidably mounted, and the bottom of the accommodating cavity is provided with a plurality of flow holes 13 arranged in an array, and the flow holes 13 penetrate the external fixed frame 8, and a mounting groove 14 is provided on the inner wall of the accommodating cavity, and the mounting groove 14 penetrates one side wall of the external fixed frame 8, and an upper fixed partition 10 is slidably mounted in the mounting groove 14, and at least one group of adjusting rails 11 is fixedly installed on a side of the external fixed frame 8 away from the accommodating cavity, and the group of adjusting rails 11 includes two vertically arranged adjusting rails 11, and a locking piece 12 is slidably connected to the adjusting rail 11, and the locking piece 12 is provided with at least one locking hole 15, and the front and back sides of the anti-electromagnetic interference sponge layer 9 are coated with a nano coating.

[0024] The two adjustment rails 11 cooperate with the locking pieces 12 slidably connected thereon to achieve the installation adaptability of the anti-electromagnetic interference filtering device. After the locking pieces 12 on the two adjustment rails 11 are locked, the two locking pieces 12 are interlocked in each other's directions, thereby achieving convenient installation of the device and adapting to locking positions at different positions. In order to achieve more stable locking, two groups of adjustment rails 11 are set, and the two groups of adjustment rails 11 are respectively set at the four sides of the back side of the external fixed frame 8 to achieve better installation and stabilization effect.

[0025] The upper fixed partition 10 includes a partition fixing frame 21 and grille bars 22. A connecting cavity penetrating the partition fixing frame 21 is provided at the center of the partition fixing frame 21. A plurality of grille bars 22 with equal spacing are fixedly installed in the connecting cavity. The grille bars 22 are inclined.

[0026] The angle of the inclined grid bars 22 is not less than 30 degrees and not more than 60 degrees. The stability of the overall structure of the upper fixed partition 10 is improved by inclining the grid bars 22 .

[0027] An upper cover assembly 16 is fixedly installed on the upper end surface of the first cabinet 1, and the upper cover assembly 16 is arranged directly above the first air outlet 5. The upper cover assembly 16 includes a support frame 17 and an upper baffle 18. The upper baffle 18 is in an inverted V shape. The lower end surface of the upper baffle 18 is fixedly installed on the upper end surface of the first cabinet 1 through the support frame 17, and the upper baffle 18 completely covers the first air outlet 5.

[0028] The upper cover assembly 16 is used to shield the upper part of the first air outlet 5 to prevent rain, and a grille plate can also be provided on the upper part of the first air outlet 5 to prevent foreign objects from entering.

[0029] A waterproof grille plate is provided on the first cabinet 1 at the third air outlet 7 , and the waterproof grille plate is integrally formed with the first cabinet 1 or is fixed with screws.

[0030] The anti-electromagnetic interference sponge layer 9 is made of anti-electromagnetic interference sponge. The anti-electromagnetic interference sponge layer 9 includes an anti-electromagnetic interference sponge body 19 and a conductive wire layer 20. The conductive wire layer 20 is formed by a plurality of conductive metal wires arranged in parallel.

[0031] The anti-electromagnetic interference effect of the anti-electromagnetic interference sponge layer 9 can be further achieved through the conductive wire layer 20, and there is a certain distance between each conductive metal wire.

[0032] The conductive wire layer 20 can be inserted into the anti-electromagnetic interference sponge in an interlaced manner. Example 2

[0033] comprehensive Figure 7 As shown, the structure of this embodiment is substantially the same as that of the embodiment 1, and the difference lies in that the conductive wire layer 20 is formed by a plurality of conductive metal wires arranged in a crisscross pattern, and a certain gap is provided between the conductive metal wires in the same direction. Example 3

[0034] This embodiment provides a method for preparing the anti-electromagnetic sponge body used in embodiment 1 or embodiment 2, comprising components Polyurethane matrix 75%-85%; Carbon nanotubes 5%-10%; Metal powder 5%-10%; Antistatic agent 0.1%-0.5%; Foaming agent 2%-5%; Coupling agent 2%-5%; Other components 0.5%-1%.

[0035] The metal powder is a nano powder prepared from one conductive metal among gold, silver, copper and aluminum, or a mixture of nano powders prepared from multiple metals.

[0036] The anti-electromagnetic interference sponge is prepared by sequentially mixing, dispersing, foaming, curing and cutting processes.

[0037] The carbon nanotube has a diameter of 15-20 nanometers and is a spiral carbon nanotube.

[0038] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. An anti-electromagnetic cabinet for a reactive power compensation device, characterized in that: The invention comprises a first cabinet (1), a second cabinet (2), an anti-electromagnetic filtering device (3) and a fan (4); the second cabinet (2) is fixedly mounted in the inner cavity of the first cabinet (1) via a fixed connecting piece; the upper end surfaces of the second cabinet (2) and the first cabinet (1) are both provided with a first air outlet (5); the second cabinet (2) is connected to the first air outlet (5) of the first cabinet (1); second air outlets (6) are also provided on both sides of the upper end surface of the second cabinet (2); and the lower side end surface of the first cabinet (1) is provided with a first air outlet (5). The first cabinet (1) and the second cabinet (2) are provided with installation openings at their front ends, the installation openings are hingedly connected to the cabinet doors, an anti-electromagnetic filter device (3) is provided in the first cabinet (5), a fan (4) is also provided at the first cabinet (5), and an anti-electromagnetic filter device (3) is also fixedly provided at the third cabinet (7), the anti-electromagnetic filter device (3) comprising an external fixed frame (8), an anti-electromagnetic interference sponge layer (9), an upper fixed partition (10), an adjustment slide rail (11) and a locking piece (12).

2. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 1, characterized in that: The upper end surface of the external fixed frame (8) is provided with a accommodating cavity, an anti-electromagnetic interference sponge layer (9) is slidably mounted in the accommodating cavity, and a plurality of flow holes (13) arranged in an array are provided at the bottom of the accommodating cavity, a mounting groove (14) is provided on the inner wall of the accommodating cavity, and the mounting groove (14) penetrates a side wall of the external fixed frame (8), an upper fixed partition (10) is slidably mounted in the mounting groove (14), at least one set of adjusting slide rails (11) is fixedly mounted on a side of the external fixed frame (8) away from the accommodating cavity, the set of adjusting slide rails (11) comprises two adjusting slide rails (11) arranged vertically, a locking piece (12) is slidably connected to the adjusting slide rail (11), and at least one locking hole (15) is provided on the locking piece (12), and both the front and back surfaces of the anti-electromagnetic interference sponge layer (9) are coated with a nano coating.

3. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 1, characterized in that: An upper cover assembly (16) is fixedly mounted on the upper end surface of the first cabinet (1), the upper cover assembly (16) being arranged directly above the first air outlet (5), the upper cover assembly (16) comprising a support frame (17) and an upper baffle (18), the upper baffle (18) being in an inverted V shape, the lower end surface of the upper baffle (18) being fixedly mounted on the upper end surface of the first cabinet (1) via the support frame (17), and the upper baffle (18) completely covers the first air outlet (5).

4. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 1, characterized in that: A waterproof grille plate is provided on the first cabinet (1) at the third air outlet (7); the waterproof grille plate is integrally formed with the first cabinet (1) or is fixed with screws.

5. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 1, characterized in that: The anti-electromagnetic interference sponge layer (9) is made of anti-electromagnetic interference sponge. The anti-electromagnetic interference sponge layer (9) comprises an anti-electromagnetic interference sponge body (19) and a conductive wire layer (20). The conductive wire layer (20) is made of a plurality of conductive metal wires arranged in parallel.

6. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 5, characterized in that: The conductive wire layer (20) is formed by a plurality of conductive metal wires arranged in a crisscross pattern, and a certain gap is provided between the conductive metal wires in the same direction.

7. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 5, characterized in that: The components of the anti-electromagnetic interference sponge include: Polyurethane matrix 75%-85%; Carbon nanotubes 5%-10%; Metal powder 5%-10%; Antistatic agent 0.1%-0.5%; Foaming agent 2%-5%; Coupling agent 2%-5%; Other components 0.5%-1%.

8. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 7, characterized in that: The metal powder is a nano powder prepared from one conductive metal among gold, silver, copper and aluminum, or a mixture of nano powders prepared from multiple metals.

9. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 7, characterized in that: The carbon nanotube has a diameter of 15-20 nanometers and is a spiral carbon nanotube.

10. The anti-electromagnetic cabinet for a reactive power compensation device according to claim 1, characterized in that: The upper fixed partition (10) comprises a partition fixing frame (21) and grille bars (22). A connecting cavity penetrating the partition fixing frame (21) is provided at the center of the partition fixing frame (21). A plurality of grille bars (22) at equal intervals are fixedly installed in the connecting cavity. The grille bars (22) are arranged obliquely.

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