High-low voltage power distribution cabinet applied to humid environment

Abstract

The application belongs to the technical field of high-low voltage power distribution cabinet, and discloses a high-low voltage power distribution cabinet applied to a humid environment, which comprises a cabinet body with a heat dissipation opening, and a filter unit is arranged on the inner side of the heat dissipation opening; the filter unit comprises a shell with an opening and air holes; a power source, an air inlet box, an air outlet box and a drainage tank are fixed on the shell respectively; the power source is used for conveying air in the cabinet body to the air inlet box; a center plate is fixed in the shell and a water removal mechanism is arranged on the center plate; a water absorption area, a water squeezing area and a air drying area are formed in the shell; the opening is communicated with the air holes through the water absorption area; the air inlet box is communicated with the air outlet box through the air drying area; the air outlet box is communicated with the outside through an air outlet pipe arranged thereon; the water squeezing area is communicated with the drainage tank; the drainage tank is communicated with the outside through a drainage pipe arranged thereon; and an auxiliary plate is arranged in the water squeezing area; the application can recycle the water absorption block and does not need to be replaced frequently.

Description

Technical Field

[0001] This invention belongs to the technical field of high and low voltage distribution cabinets, specifically high and low voltage distribution cabinets applied in humid environments. Background Technology

[0002] During the use of high and low voltage switchgear, it is sometimes necessary to operate in relatively humid environments. In such cases, it is necessary to install appropriate dehumidification devices to prevent moisture in the air from entering the interior of the switchgear. Some methods involve placing desiccants to absorb moisture from the air, but this requires regular replacement, which is cumbersome. Other methods involve placing sponges on a conveyor belt to absorb moisture from the air. Once the sponges are saturated, they are removed, eliminating the need for regular replacement. However, these sponges are usually designed as a ring-shaped structure with strong water absorption capacity. This means that moisture can easily transfer within the sponge during use, making it difficult to distinguish between the absorbed and unabsorbed parts. Consequently, even after replacement, the replaced sponge area may still contain some moisture, reducing its absorbency. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a high and low voltage distribution cabinet for use in humid environments. It effectively solves the problem that sponges are usually designed as a ring-shaped integral structure with strong water absorption capacity. This causes water to easily transfer inside the sponge during use, resulting in an unclear distinction between the water-absorbing and non-water-absorbing parts of the sponge. Consequently, the replaced sponge area also contains a certain amount of moisture, thus reducing the water absorption effect of the replaced sponge.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high and low voltage distribution cabinet for use in humid environments, comprising a cabinet with heat dissipation vents, a filter unit provided inside the heat dissipation vents, the filter unit comprising a shell with openings and vents, a power source, an air inlet box, an air outlet box, and a drain box respectively fixed on the shell, the power source being used to transport air from inside the cabinet to the air inlet box, a central plate fixed inside the shell and provided with a water removal mechanism, the shell forming a water absorption area, a water squeezing area, and a drying area, the opening communicating with the vents through the water absorption area, and the air inlet box... The drying zone is connected to the air outlet box, which is connected to the outside through the air outlet pipe. The water squeezing zone is connected to the drainage box, which is connected to the outside through the drainage pipe. An auxiliary plate is provided in the water squeezing zone. The water removal mechanism includes a power component, two rotating rollers and a ventilated belt. The two rotating rollers are rotatably installed in the housing and are connected by the ventilated belt. The power component is fixed on the housing and is used to drive the corresponding rotating rollers to rotate. A partition and a water-absorbing block are alternately fixed on the ventilated belt. During operation, when the partition passes through the water squeezing zone, it is squeezed by the auxiliary plate and then squeezes the water-absorbing block.

[0005] Preferably, the cabinet body is hinged with a cabinet door, and the cabinet body is provided with two heat dissipation vents. Each of the two heat dissipation vents is equipped with a filter unit inside. One heat dissipation vent is an air inlet, and the other heat dissipation vent is an air outlet.

[0006] Preferably, the power source is fixed to the housing, one end of the power source is connected to the cabinet, and the other end of the power source is connected to the air inlet box; the power source includes an air pump or a fan.

[0007] Preferably, the two ends of the center plate are sealed at the contact points with the corresponding two rotating rollers.

[0008] Preferably, there are two auxiliary plates, both of which are fixed to the shell and distributed on the inner and outer sides of the ventilated strip; both auxiliary plates are provided with drainage holes.

[0009] Preferably, the auxiliary plate has an inclined portion and a pressing portion; the inclined portions on the two auxiliary plates are arranged opposite to each other, and the pressing portions on the two auxiliary plates are arranged in parallel.

[0010] Preferably, the power component includes a power motor, which is fixed to the housing, and the output shaft of the power motor is fixed to the corresponding rotating roller.

[0011] Preferably, the partition includes an elastic part, a solid part, and a sealing part. The elastic part is fixed to the ventilated belt, and the elastic part is fixed to the sealing part through the solid part. The sealing part abuts against the inner wall of the shell.

[0012] Preferably, the absorbent block is made of polyvinyl alcohol porous sponge or polypropylene hydrophilic modified nonwoven fabric.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. During operation, the combination of absorbent blocks, rotating rollers, and breathable belts allows the absorbent blocks to be transferred to remove moisture after they become saturated, enabling them to be recycled. The absorbent blocks in the remaining areas can then be transferred and reused, thus eliminating the need for frequent replacements and making the system quite convenient.

[0014] 2. During operation, the partitions can separate different absorbent blocks to prevent moisture from spreading between them. They can also squeeze the absorbent blocks to remove moisture, facilitating their recycling. In addition, the partitions can act as a seal to prevent moisture from transferring from the absorption area to the drying area. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the high and low voltage distribution cabinet structure of the present invention applied in a humid environment; Figure 2 This is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 3 This is a schematic diagram of the housing mounting structure of the present invention; Figure 4 This is one of the schematic diagrams of the overall structure of the housing of the present invention; Figure 5 This is a second schematic diagram of the overall structure of the housing of the present invention; Figure 6 This is one of the schematic diagrams of the internal structure of the housing of the present invention; Figure 7 This is a second schematic diagram of the internal structure of the housing of the present invention; Figure 8 This is a schematic diagram of the partition structure of the present invention; Figure 9 This is a schematic diagram of the auxiliary plate structure of the present invention.

[0017] In the diagram: 1. Cabinet body; 2. Ventilation vent; 3. Shell; 4. Opening; 5. Ventilation hole; 6. Air inlet box; 7. Air outlet box; 8. Drain box; 9. Center plate; 10. Water absorption area; 11. Water squeezing area; 12. Drying area; 13. Air outlet pipe; 14. Drain pipe; 15. Auxiliary plate; 16. Rotary roller; 17. Ventilation strip; 18. Partition; 19. Water absorption block; 20. Cabinet door; 21. Air pump; 22. Inclined part; 23. Squeezing part; 24. Power motor; 25. Elastic part; 26. Solid part; 27. Sealing part. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] During the use of high and low voltage switchgear, it is sometimes necessary to operate in relatively humid environments. In such cases, it is necessary to install appropriate dehumidification devices to prevent moisture in the air from entering the interior of the switchgear. Some methods involve placing desiccants to absorb moisture from the air, but this requires regular replacement, which is cumbersome. Other methods involve placing sponges on a conveyor belt to absorb moisture from the air. Once the sponges are saturated, they are removed, eliminating the need for regular replacement. However, these sponges are usually designed as a ring-shaped structure with strong water absorption capacity. This means that moisture can easily transfer within the sponge during use, making it difficult to distinguish between the absorbed and unabsorbed parts. Consequently, even after replacement, the replaced sponge area may still contain some moisture, reducing its absorbency.

[0020] Depend on Figures 1-9 The present invention relates to a high and low voltage distribution cabinet for use in humid environments, comprising a cabinet body 1 with heat dissipation vents 2, a filter unit provided inside the heat dissipation vents 2, a cabinet door 20 hinged to the cabinet body 1, and two heat dissipation vents 2 provided on the cabinet body 1, each with a filter unit inside, one heat dissipation vent 2 being an air inlet and the other heat dissipation vent 2 being an air outlet.

[0021] With this design, during use, the built-in cooling fan inside the cabinet 1 allows outside air to enter through one vent 2 and then exit through another vent 2. In this airflow process, heat is expelled from the cabinet 1, thereby reducing the temperature inside the cabinet 1. During this process, a filter unit removes moisture from the air, thus preventing it from affecting the electrical components inside the cabinet 1.

[0022] The following methods are provided to ensure effective removal of moisture from the air: The filter unit includes a housing 3 with an opening 4 and a vent 5. A power source, an air inlet box 6, an air outlet box 7, and a drain box 8 are fixed on the housing 3. The power source is used to transport the air in the cabinet 1 to the air inlet box 6. A central plate 9 is fixed inside the housing 3 and a water removal mechanism is provided. A water absorption area 10, a water squeezing area 11, and a drying area 12 are formed inside the housing 3. The opening 4 is connected to the vent 5 through the water absorption area 10. The air inlet box 6 is connected to the air outlet box 7 through the drying area 12. The air outlet box 7 is connected to the outside through the air outlet pipe 13 on it. The water squeezing area 11 is connected to the drain box 8. The drain box 8 is connected to the outside through the drain pipe 14 on it. An auxiliary plate 15 is provided inside the water squeezing area 11. The dewatering mechanism includes a power unit, two rotating rollers 16, and a breathable belt 17. The two rotating rollers 16 are rotatably disposed inside the housing 3 and are connected by transmission through the breathable belt 17. The power unit is fixed on the housing 3 and is used to drive the corresponding rotating rollers 16 to rotate. The breathable belt 17 is alternately fixed with partitions 18 and water-absorbing blocks 19. During operation, when the partitions 18 pass through the dewatering zone 11, they are squeezed by the auxiliary plate 15 and then squeeze the water-absorbing blocks 19.

[0023] With this design, during use, the air outside the cabinet 1 enters the water absorption area 10 inside the shell 3 through the heat dissipation vent 2 and the opening 4 in sequence. The water absorption block 19 located in the water absorption area 10 inside the shell 3 absorbs the moisture in the air. After the air is dehydrated, it passes through the ventilation strip 17 and enters the space between the center plate 9 and the ventilation strip 17. Then it is discharged into the interior of the cabinet 1 through the ventilation hole 5. Then the air inside the cabinet 1 is discharged through another heat dissipation vent 2.

[0024] It should be noted that a filter unit can also be installed inside the other heat dissipation vent 2. In this case, the air inside the cabinet 1 is discharged in the opposite way to the above. Alternatively, a one-way valve can be installed inside the other heat dissipation vent 2 so that the air inside the cabinet 1 can be discharged directly through the other heat dissipation vent 2. The one-way valve can prevent outside air from entering. The ventilation strip 17 can be made of fiberglass or non-woven fabric, etc.

[0025] After a certain period of use, the water absorption effect of the absorbent block 19 decreases. At this time, the corresponding roller 16 is rotated by the power component. The roller 16 drives the ventilation belt 17 to move, and the ventilation belt 17 drives the partition 18 and the absorbent block 19 on it to move. This allows the absorbent block 19 in the water absorption area 10 to enter the drying area 12 after passing through the squeezing area 11. The absorbent block 19 in the drying area 12 then enters the water absorption area 10, thus realizing the replacement process of the absorbent block 19, which is relatively convenient. During this process, the partition 18 can separate different absorbent blocks 19, thereby preventing water from spreading between different absorbent blocks 19.

[0026] When the water-absorbing block 19 passes through the squeezing area 11, the partition 18 bends under the action of the auxiliary plate 15. The bent auxiliary plate 15 squeezes the water-absorbing block 19, and the squeezed water falls into the interior of the drain box 8. Finally, it is discharged to the outside of the cabinet 1 through the drain pipe 14. Then, the squeezed water-absorbing block 19 moves to the drying area 12. The power source causes the air in the cabinet 1 to be transported to the interior of the drying area 12 through the air inlet box 6 to dry the water-absorbing block 19 in the drying area 12. Then, it is discharged to the outside of the cabinet 1 through the air outlet pipe 13 on the air outlet box 7, thereby realizing the recycling of the water-absorbing block 19.

[0027] It should be noted that the temperature inside the cabinet 1 is usually higher than the outside temperature. Therefore, the heat generated by the electrical components inside the cabinet 1 can be used to speed up the drying process of the water-absorbing block 19 located in the drying area 12. In order to prevent air or moisture backflow, one-way valves can be installed in both the drain pipe 14 and the air outlet pipe 13.

[0028] Specifically, the power source is fixed to the housing 3, with one end connected to the cabinet 1 and the other end connected to the air inlet box 6; the power source includes an air pump 21 or a fan. This design allows the air inside the cabinet 1 to be transported to the interior of the air inlet box 6 via the air pump 21 or the fan, which not only enables the drying of the water-absorbing blocks 19 in the drying area 12, but also accelerates the transfer of heat inside the cabinet 1.

[0029] Specifically, the two ends of the center plate 9 are sealed at their contact points with the corresponding two rotating rollers 16. This design prevents moisture from entering the interior of the drying zone 12.

[0030] Preferably, there are two auxiliary plates 15, both of which are fixed to the housing 3 and distributed on the inner and outer sides of the ventilated strip 17; both auxiliary plates 15 are provided with drainage holes. With this design, the water squeezing effect on the absorbent block 19 can be further improved by the cooperation of one of the auxiliary plates 15 with the partition 18, and the drainage holes facilitate the discharge of squeezed water.

[0031] Specifically, the auxiliary plate 15 has an inclined portion 22 and a squeezing portion 23; the inclined portions 22 on the two auxiliary plates 15 are arranged opposite each other, and the squeezing portions 23 on the two auxiliary plates 15 are arranged in parallel. This design facilitates the bending of the partition 18 by the inclined portion 22, and the squeezing portion 23 allows the squeezing of the water-absorbing block 19 to continue for a certain period of time, so as to fully squeeze out the water.

[0032] Specifically, the power component includes a power motor 24, which is fixed to the housing 3, and the output shaft of the power motor 24 is fixed to the corresponding rotating roller 16. This design facilitates the rotation of the rotating roller 16 by the power motor 24, thereby driving the ventilation belt 17.

[0033] Furthermore, the partition 18 includes an elastic part 25, a solid part 26, and a sealing part 27. The elastic part 25 is fixed to the ventilated belt 17, and the elastic part 25 is fixed to the sealing part 27 through the solid part 26. The sealing part 27 abuts against the inner wall of the housing 3.

[0034] This design, through the setting of the elastic part 25, allows the partition 18 to bend when subjected to force and return to its original state when not subjected to force; the solid part 26 facilitates the squeezing of the water-absorbing block 19; the setting of the sealing part 27 allows the partition 18 to be sealed with the shell 3. Through multiple seals, moisture can be prevented from penetrating into the interior of the drying area 12, ensuring that the drying area 12 is always in a dry state.

[0035] Specifically, the absorbent block 19 is made of materials such as polyvinyl alcohol porous sponge or polypropylene hydrophilic modified non-woven fabric.

[0036] 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.

[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high- and low-voltage distribution cabinet for use in humid environments, comprising a cabinet (1) with a heat dissipation vent (2), wherein a filter unit is provided inside the heat dissipation vent (2), characterized in that, The filter unit includes a housing (3) with an opening (4) and a vent (5). A power source, an air inlet box (6), an air outlet box (7), and a drain box (8) are fixed on the housing (3). The power source is used to transport the air inside the cabinet (1) to the air inlet box (6). A center plate (9) is fixed inside the housing (3) and a water removal mechanism is provided. A water absorption area (10), a water squeezing area (11), and a drying area (12) are formed inside the housing (3). The opening (4) is connected to the vent (5) through the water absorption area (10). The air inlet box (6) is connected to the air outlet box (7) through the drying area (12). The air outlet box (7) is connected to the outside through the air outlet pipe (13) on it. The water squeezing area (11) is connected to the drain box (8). The drain box (8) is connected to the outside through the drain pipe (14) on it. An auxiliary plate (15) is provided inside the water squeezing area (11). The dewatering mechanism includes a power unit, two rotating rollers (16) and a breathable belt (17). The two rotating rollers (16) are rotatably disposed inside the housing (3) and are connected by transmission through the breathable belt (17). The power unit is fixed on the housing (3) and is used to drive the corresponding rotating rollers (16) to rotate. The breathable belt (17) is alternately fixed with partitions (18) and water-absorbing blocks (19). When working, the partitions (18) are squeezed by the auxiliary plate (15) after passing through the dewatering zone (11).

2. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The cabinet (1) is hinged with a cabinet door (20). The cabinet (1) has two heat dissipation vents (2). Both heat dissipation vents (2) are equipped with filter units inside. One heat dissipation vent (2) is an air inlet, and the other heat dissipation vent (2) is an air outlet.

3. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The power source is fixed on the housing (3), one end of the power source is connected to the cabinet (1), and the other end of the power source is connected to the air inlet box (6); the power source includes an air pump (21) or a fan.

4. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The two ends of the center plate (9) are sealed at the contact points with the corresponding two rollers (16).

5. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The auxiliary plate (15) is provided in two parts. Both auxiliary plates (15) are fixed to the shell (3) and distributed on the inner and outer sides of the ventilated strip (17). Both auxiliary plates (15) are provided with drainage holes.

6. The high and low voltage distribution cabinet for use in humid environments according to claim 5, characterized in that: An inclined portion (22) and a pressing portion (23) are formed on the auxiliary plate (15); the inclined portions (22) on the two auxiliary plates (15) are arranged opposite to each other, and the pressing portions (23) on the two auxiliary plates (15) are arranged in parallel.

7. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The power component includes a power motor (24), which is fixed on the housing (3). The output shaft of the power motor (24) is fixed to the corresponding rotating roller (16).

8. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The partition (18) includes an elastic part (25), a solid part (26) and a sealing part (27). The elastic part (25) is fixed on the breathable belt (17). The elastic part (25) is fixed to the sealing part (27) through the solid part (26). The sealing part (27) abuts against the inner wall of the shell (3).

9. The high and low voltage distribution cabinet for use in humid environments according to claim 1, characterized in that: The absorbent block (19) is made of polyvinyl alcohol porous sponge or polypropylene hydrophilic modified nonwoven fabric.

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