Condensation removing device for electric cabinet and electric cabinet

Abstract

The utility model discloses an electric cabinet condensation removal device and an electric cabinet, and relates to the technical field of electric cabinet condensation removal, the electric cabinet condensation removal device comprises a heat exchange plate body, the heat exchange plate body is provided with a condensation area and a heat dissipation area, the condensation area and the heat dissipation area are respectively arranged on a group of opposite surfaces of the heat exchange plate body, the condensation area is provided with a plurality of condensation sheets and a liquid collection structure, the multiple condensation pieces are connected to the heat exchange plate body, a first flow guide channel is formed between every two adjacent condensation pieces, and the multiple first flow guide channels are parallel to one another. The liquid collecting structure is arranged at one end of the first flow guide channel and used for receiving liquid flowing out of the first flow guide channel. According to the electric cabinet condensation removing device and the electric cabinet, condensation can be carried out on specific parts, dew can be discharged, and the risk that electric elements are damaged by condensation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of condensation removal of electric cabinets, in particular to a condensation removal device for electric cabinets and an electric cabinet. Background Art

[0002] A switchgear, a collection of devices that integrate power control, protection, and monitoring functions, is essential and crucial in power systems. High-voltage switchgear is typically installed outdoors in harsh working environments, particularly in new energy projects, where facilities are located in mountainous areas and experience significant daytime and nighttime temperature swings. This makes condensation prone to forming in the switchgear's cable compartments. Condensation is harmful to power equipment, causing flashovers or discharges between high-voltage electrical components and even serious accidents. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a condensation removal device for an electrical cabinet, which can remove condensation on specific components and drain the dew, thereby reducing the risk of condensation damaging electrical components.

[0004] The utility model also provides an electric cabinet.

[0005] According to an embodiment of the first aspect of the present invention, a condensation removal device for an electrical cabinet includes: a heat exchange plate, the heat exchange plate having a condensation area and a heat dissipation area, the condensation area and the heat dissipation area being respectively located on a set of opposite surfaces of the heat exchange plate, the condensation area being provided with a condensation sheet and a liquid collecting structure, wherein the number of the condensation sheets is multiple;

[0006] The plurality of condensing plates are connected to the heat exchange plate body, a first guide channel is formed between two adjacent condensing plates, and the plurality of first guide channels are parallel to each other;

[0007] The liquid collecting structure is provided at one end of the first flow guiding channel, and is used for receiving the liquid flowing out of the first flow guiding channel.

[0008] The condensation removal device for an electric cabinet according to the embodiment of the present invention has at least the following beneficial effects: the heat dissipation area of ​​the heat exchange plate is used to contact the cold air of the external environment, which can reduce the temperature of the heat exchange plate and make the temperature of the heat exchange plate lower than the temperature of the wall of the electric cabinet; the condensation area is used to contact the hot air in the equipment area inside the electric cabinet; the hot air contacts the condensation plates in the condensation area, and since the temperature difference between the hot air and the heat exchange plate is greater, the hot air condenses on the condensation plates, and the dew enters the liquid collection structure along the first guide channel and is finally discharged to the outside of the electric cabinet. The possibility of hot air condensing on the inner wall of the electric cabinet or the surface of the electrical components is greatly reduced, thereby reducing the risk of condensation damaging the electrical components.

[0009] According to some embodiments of the present invention, the liquid collecting structure includes a liquid collecting trough and a second guide channel arranged in the liquid collecting trough, the opening of the liquid collecting trough faces the first guide channel, and the second guide channel is used to connect to the pipeline.

[0010] According to some embodiments of the present invention, the liquid collecting trough is configured as an arc-shaped structure, and the second guide channel is provided at a position of the liquid collecting trough away from the first guide channel in a length direction parallel to the first guide channel.

[0011] According to some embodiments of the present invention, an inclined surface is provided at the bottom of the liquid collecting tank, and the inclined surface gradually deviates toward the opening direction of the liquid collecting tank in a direction away from the plate surface of the heat exchange plate body.

[0012] According to some embodiments of the present invention, the heat dissipation area is provided with a plurality of sheet-shaped heat dissipation fins, and the plurality of heat dissipation fins are all connected to the heat exchange plate body.

[0013] According to some embodiments of the present invention, an air duct is formed between two adjacent heat sinks, and the air duct is parallel to the first guide channel.

[0014] According to some embodiments of the present invention, a plurality of penetrating connection holes are provided on the plate surface of the heat exchange plate body.

[0015] According to the electric cabinet of the embodiment of the second aspect of the present utility model, the electric cabinet is equipped with the above-mentioned electric cabinet condensation removal device.

[0016] The electrical cabinet according to the embodiment of the present invention has at least the following beneficial effects: the heat exchange plate is used to be arranged in the electrical cabinet to separate the electrical cabinet into two spaces; the heat dissipation area of ​​the heat exchange plate is used to contact the cold air of the external environment, which can reduce the temperature of the heat exchange plate and make the temperature of the heat exchange plate lower than the temperature of the wall of the electrical cabinet, and the condensation area is used to contact the hot air in the equipment area in the electrical cabinet; the hot air contacts the condensation plates in the condensation area, and since the temperature difference between the hot air and the heat exchange plate is greater, the hot air condenses on the condensation plates, and the dew enters the liquid collecting structure along the first guide channel and is finally discharged to the outside of the electrical cabinet. The possibility of hot air condensing on the inner wall of the electrical cabinet or the surface of the electrical components is greatly reduced, thereby reducing the risk of condensation damaging the electrical components.

[0017] According to some embodiments of the present invention, the electric cabinet condensation removal device is arranged inside the electric cabinet, and the first guide channel is arranged vertically. The heat exchange plate separates the internal space of the electric cabinet into an equipment area and a convection area. The condensation area is located in the equipment area, and the heat dissipation area is located in the convection area.

[0018] According to some embodiments of the present invention, a pressure relief channel is further provided between the equipment area and the convection area.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a front view of the condensation removal device for an electric cabinet according to the present invention;

[0022] Figure 2 This is a side view of the condensation removal device for an electrical cabinet according to the present invention;

[0023] Figure 3 This is a top view of the condensation removal device for an electrical cabinet according to the present invention;

[0024] Figure 4 This is a schematic structural diagram of the heat exchange plate, condensing fins and heat sinks of an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the assembly of an electric cabinet and an electric cabinet condensation removal device according to the present invention.

[0026] Figure Number:

[0027] The heat exchange plate 100 , the condensing plate 200 , the first guide channel 210 , the liquid collecting structure 300 , the liquid collecting tank 310 , the second guide channel 320 , the heat sink 400 , the connecting hole 500 , the equipment area 600 , and the convection area 700 . DETAILED DESCRIPTION

[0028] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] High-voltage electrical cabinets are typically installed outdoors, where they operate in harsh environments. For example, in new energy projects located in mountainous areas, the cabinets operate in an environment with large temperature swings between day and night. Because the cabinets generate heat during operation, hot air inside the cabinets can easily condense in the cable compartment when it contacts the cooler inner walls. Condensation is harmful to electrical equipment, causing flashovers or electrical discharges between high-voltage electrical components, potentially leading to serious accidents.

[0033] Some 10kV and 35kV ring main units often use air insulation. When condensation forms in the hot air inside the ring main unit, it can damage the air insulation and cause a short circuit. For example, condensation in the voltage transformer area can cause a short circuit at the transformer's secondary terminals, leading to an accident.

[0034] Reference Figures 1 to 3 As shown, an embodiment of the utility model is an electrical cabinet condensation removal device, which includes a heat exchange plate 100. The heat exchange plate 100 has a condensation area and a heat dissipation area. The condensation area and the heat dissipation area are respectively located on a group of opposite surfaces of the heat exchange plate 100. The condensation area is provided with a condensation sheet 200 and a liquid collection structure 300, wherein the number of the condensation sheets is multiple.

[0035] The heat exchange plate 100 is used to be installed in an electrical cabinet, dividing the cabinet into two spaces. The condensation zone faces the equipment area of ​​the electrical cabinet, such as the cable room or the transformer area, and the heat dissipation zone is used to contact the air of the external environment. The equipment in the electrical cabinet generates heat during operation, so the air temperature in the electrical cabinet is often higher than the air temperature of the external environment. The outer surface of the side wall of the electrical cabinet is in contact with the external environment, and the temperature of the side wall is relatively low. When the hot air in the electrical cabinet contacts the side wall with a lower temperature, condensation is easily generated. By arranging the heat exchange plate 100 in the electrical cabinet and lowering the temperature of the heat exchange plate 100 to a temperature lower than the temperature of the side wall of the electrical cabinet through the heat dissipation zone, the hot air in the electrical cabinet can be controlled to condense in the condensation zone of the heat exchange plate 100.

[0036] Therefore, the heat exchange plate 100 can be made of a material with good thermal conductivity. When exposed to the external air, the temperature of the heat exchange plate 100 decreases at a faster rate than the temperature of the cabinet sidewalls. The temperature difference between the hot air inside the cabinet and the heat exchange plate 100 is greater, and condensation occurs preferentially when the hot air contacts the condensation zone.

[0037] Multiple condensing plates 200 are connected to the heat exchange plate body 100, and a first guide channel 210 is formed between two adjacent condensing plates 200, and multiple first guide channels 210 are parallel to each other; the liquid collecting structure 300 is arranged at one end of the first guide channel 210, and the liquid collecting structure 300 is used to receive the liquid flowing out of the first guide channel 210.

[0038] The condensation area is equipped with multiple sheet-like condensing sheets 200. The sheet-like structure of the condensing sheets 200 increases the contact surface area with the hot air, improving condensation efficiency. Furthermore, a first guide channel 210 is formed between the condensing sheets 200 to facilitate the flow of dew along the first guide channel 210. A liquid collection structure 300 is provided at one end of the first guide channel 210. By adjusting the installation direction of the heat exchange plate 100, the liquid collection structure 300 can collect dew flowing along the first guide channel 210 and then discharge the dew to the outside of the electrical cabinet.

[0039] It should be understood that dew flows under the action of gravity, so when installing the heat exchange plate 100, the length direction of the first guide channel 210 can be set vertically while ensuring that the liquid collecting structure 300 is located at the bottom of the heat exchange plate 100.

[0040] In addition, the length direction of the first guide channel 210 is arranged vertically, which also facilitates the circulation of hot air and contact with the condensing sheet 200. Specifically, after the hot air contacts the condensing sheet 200, heat exchange occurs, the hot air temperature drops and condensation occurs. The density of the cooled hot air increases and moves downward. When the hot air moves downward, it can also flow along the first guide channel 210 without being blocked by the condensing sheet 200.

[0041] Of course, in an electrical cabinet, to ensure that the air in the equipment area preferentially circumvents heat convection with the heat exchange plate 100, insulation material, such as thermal insulation foam or other materials, can be placed around the equipment area. This increases the temperature difference between the hot air and the heat exchange plate 100. The insulation material is attached to the inner surface of the electrical cabinet in the equipment area; it is important to note that the heat exchange plate 100 is not provided with insulation material. It is important to understand that the insulation material also maintains a constant temperature for the air in the equipment area, minimizing condensation. When condensation is unavoidable, it is prioritized in the condensation zone of the heat exchange plate 100.

[0042] It is understandable that the liquid collecting structure 300 includes a liquid collecting trough 310 and a second guide channel 320 disposed in the liquid collecting trough 310 . The opening of the liquid collecting trough 310 faces the first guide channel 210 . The second guide channel 320 is used to connect to the pipeline.

[0043] When the heat exchange plate 100 is arranged vertically and the length of the first guide channel 210 is vertical, dewwater flowing through the first guide channel 210 can fall into the opening of the sump 310. The second guide channel 320 within the sump 310 can drain the dewwater. Preferably, the pipe connected to the second guide channel 320 is a hose, which should be laid at a height lower than the sump 310.

[0044] Of course, an active drainage solution can also be used to drain dew. A water pump is connected between the hoses, and a sensor is installed to detect the water source. When the sensor detects dew in the second diversion channel 320, the water pump is activated to drain the dew in the second diversion channel 320 and the sump 310 through the hose to the outside of the electrical cabinet.

[0045] It is understandable that the liquid collecting trough 310 is configured as an arc-shaped structure, and a second guiding channel 320 is provided at a position of the liquid collecting trough 310 away from the first guiding channel 210 in a length direction parallel to the first guiding channel 210 .

[0046] The arc structure can be a semicircular arc. When the heat exchange plate 100 is arranged vertically, the length direction of the first guide channel 210 is along the vertical direction. In this case, the position of the sump 310 away from the first guide channel 210 is the lowest position of the sump 310. The second guide channel 320 is arranged at the lowest position of the sump 310 to facilitate the drainage of dew in the sump 310.

[0047] It is understandable that the bottom of the liquid collecting tank 310 is provided with an inclined surface, and the inclined surface gradually deviates towards the opening direction of the liquid collecting tank 310 in the direction away from the plate surface of the heat exchange plate body 100.

[0048] This means that dew in the sump 310, influenced by the inclined surface, tends to flow toward the surface of the heat exchange plate 100. Because the heat exchange plate 100 opens upward after installation, the inclined surface gradually deflects away from the surface of the heat exchange plate 100 and toward the opening of the sump 310, meaning the inclined surface gradually deflects upward. Even if dew does flow onto the inclined surface, it will be guided toward the surface of the heat exchange plate 100, meaning the dew tends to flow downward.

[0049] Reference Figure 4 As shown, it can be understood that the heat dissipation area is provided with a plurality of sheet-shaped heat dissipation fins 400 , and the plurality of heat dissipation fins 400 are all connected to the heat exchange plate body 100 .

[0050] In order to improve the cooling efficiency of the heat exchange plate 100, a structure similar to the condensing plate 200, that is, a sheet-shaped heat sink 400, can be provided in the heat dissipation area. The heat sink 400 can increase the contact surface area between the heat dissipation area and the external air.

[0051] Preferably, the condensing fins 200 and the heat dissipating fins 400 can be integrally formed with the heat exchange plate 100 to avoid heat conduction losses caused by structural assembly.

[0052] It can be understood that an air duct is formed between two adjacent heat sinks 400 , and the air duct is parallel to the first air guiding channel 210 .

[0053] When the length of the first air guide channel 210 is vertical, the air duct is also vertical. When the external cold air contacts the heat sink 400, its temperature rises, and its density decreases, causing it to rise. As the cold air rises, it can flow along the vertical air duct while maintaining contact with the heat sink 400. The heat sink 400 does not block the flow of the cold air, thus enhancing convection.

[0054] It is understandable that a plurality of penetrating connection holes 500 are provided on the plate surface of the heat exchange plate body 100 .

[0055] The heat exchange plate 100 can be fixedly connected to the electrical cabinet using bolts or screws. The bolts or screws can be inserted through the connection holes 500 and connected to the mounting position of the electrical cabinet. For example, the electrical cabinet may be provided with multiple L-shaped connecting plates. One side of the connecting plate is connected to the side wall or bottom of the electrical cabinet, and the other side of the connecting plate is perpendicular to the side wall or bottom, and this side serves as the mounting surface. This ensures that all mounting surfaces are coplanar. The heat exchange plate 100 can be aligned with the mounting surface and connected to the connecting plate using bolts or screws.

[0056] Reference Figure 5 As shown, an electric cabinet according to an embodiment of the present invention is equipped with the above-mentioned electric cabinet condensation removal device.

[0057] It can be understood that the condensation removal device of the electric cabinet is arranged inside the electric cabinet, and the first guide channel is arranged vertically. The heat exchange plate 100 separates the internal space of the electric cabinet into an equipment area 600 and a convection area 700. The condensation area is located in the equipment area 600, and the heat dissipation area is located in the convection area 700.

[0058] The equipment area 600 is used to install electrical components and other facilities, and the convection area 700 is used to introduce external cold air. It should be understood that the equipment area 600 and the convection area 700 are separated by a heat exchange plate 100 to prevent external air from directly entering the electrical cabinet. External air may carry solid particles such as sand and dust, and electrical cabinets are often installed with precision electrical components or equipment. These devices are sensitive to pollutants such as dust. If too much dust accumulates, it may cause equipment failure, short circuit, leakage and other problems, thereby affecting the normal operation of the power system and even causing safety hazards. In addition, dust and other pollutants accumulate inside the electrical cabinet, forming dirt, which affects the heat dissipation effect of the equipment. Poor heat dissipation can cause the temperature of the equipment to rise abnormally, accelerate the aging of the equipment, and shorten its service life.

[0059] The equipment in the electrical cabinet generates heat during operation, so the air temperature in the equipment area 600 is often higher than the air temperature of the external environment. The outer surface of the side wall of the electrical cabinet is in contact with the external environment, and the temperature of the side wall is relatively low. The hot air in the equipment area 600 contacts the side wall with a low temperature, which easily produces condensation. A heat exchange plate 100 is provided in the electrical cabinet, and the temperature of the heat exchange plate 100 is reduced to a temperature lower than the temperature of the side wall of the electrical cabinet through the heat dissipation zone, so that the hot air in the equipment area 600 can be controlled to condense in the condensation zone of the heat exchange plate 100. The condensation zone is provided with a plurality of sheet-like condensing sheets 200. The sheet-like condensing sheets 200 can increase the contact surface area with the hot air and improve the condensation efficiency. At the same time, a first guide channel 210 is formed between the condensing sheets 200 to facilitate the flow of dew along the first guide channel 210. The liquid collecting structure 300 is arranged at one end of the first guide channel 210. By adjusting the installation direction of the heat exchange plate 100, the liquid collecting structure 300 can collect the dew flowing along the first guide channel 210 and then discharge the dew to the outside of the electrical cabinet.

[0060] It is understandable that a pressure relief channel is provided between the equipment area 600 and the convection area 700 .

[0061] When necessary, a pressure relief channel is needed to maintain the air pressure balance between the electrical cabinet and the external environment. Of course, components such as filters can be set in the pressure relief channel to prevent external dust from entering the electrical cabinet.

[0062] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A condensation removal device for an electrical cabinet, characterized in that: include: A heat exchange plate (100), the heat exchange plate (100) having a condensation area and a heat dissipation area, the condensation area and the heat dissipation area being respectively located on a set of opposite surfaces of the heat exchange plate (100), the condensation area being provided with a condensation sheet (200) and a liquid collecting structure (300), wherein the number of the condensation sheets (200) is plural; The plurality of condensing fins (200) are all connected to the heat exchange plate body (100), a first guide channel (210) is formed between two adjacent condensing fins (200), and the plurality of first guide channels (210) are parallel to each other; The liquid collecting structure (300) is arranged at one end of the first flow guiding channel (210), and the liquid collecting structure (300) is used to receive liquid flowing out of the first flow guiding channel (210).

2. The condensation removal device for an electric cabinet according to claim 1, characterized in that: The liquid collecting structure (300) comprises a liquid collecting trough (310) and a second flow guiding channel (320) arranged in the liquid collecting trough (310), the opening of the liquid collecting trough (310) faces the first flow guiding channel (210), and the second flow guiding channel (320) is used for connecting a pipeline.

3. The condensation removal device for an electric cabinet according to claim 2, characterized in that: The liquid collecting trough (310) is configured as an arc-shaped structure, and the second flow guiding channel (320) is provided at a position of the liquid collecting trough (310) away from the first flow guiding channel (210) in a length direction parallel to the first flow guiding channel (210).

4. The condensation removal device for an electric cabinet according to claim 3, characterized in that: An inclined surface is provided at the bottom of the liquid collecting trough (310), and the inclined surface gradually deviates towards the opening direction of the liquid collecting trough (310) in a direction away from the plate surface of the heat exchange plate body (100).

5. The condensation removal device for an electric cabinet according to claim 1, characterized in that: The heat dissipation area is provided with a plurality of sheet-shaped heat dissipation fins (400), and the plurality of heat dissipation fins (400) are all connected to the heat exchange plate body (100).

6. The condensation removal device for an electric cabinet according to claim 5, characterized in that: An air duct is formed between two adjacent heat sinks (400), and the air duct is parallel to the first guide channel (210).

7. The condensation removal device for an electric cabinet according to claim 1, characterized in that: A plurality of penetrating connection holes (500) are provided on the plate surface of the heat exchange plate body (100).

8. An electric cabinet, characterized in that: The electric cabinet is equipped with the electric cabinet condensation removal device according to any one of claims 1 to 7.

9. The electric cabinet according to claim 8, characterized in that: The electric cabinet condensation removal device is arranged inside the electric cabinet, and the first guide channel is arranged vertically. The heat exchange plate (100) separates the internal space of the electric cabinet into an equipment area (600) and a convection area (700). The condensation area is located in the equipment area (600), and the heat dissipation area is located in the convection area (700).

10. The electric cabinet according to claim 9, characterized in that: A pressure relief channel is also provided between the equipment area (600) and the convection area (700).

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