Dehumidification device for high-voltage switch cabinet

Abstract

The utility model discloses a dehumidification device for a high-voltage switch cabinet, which relates to the technical field of switch cabinets and comprises a dehumidifier (1) arranged on a cabinet body (100), an air duct system arranged in the cabinet body (100) and a drying air pipe (2) with one end connected with the dehumidifier (1) and the other end connected with the air duct system. The air duct system comprises an air inducing pipe (3), an air duct branch pipe (4) and an adjusting mechanism (7) which is arranged in the air duct branch pipe (4) and used for adjusting the air outlet angle, the number of the drying air pipes (2) is more than two, the drying air pipes (2) are arranged at the upper end of the cabinet body (100), one end of the air inducing pipe (3) is communicated with the drying air pipes (2), and the other end of the air inducing pipe (3) is communicated with the air duct branch pipe (4). According to the utility model, the problem that one dehumidifier (1) cannot give consideration to a plurality of high-voltage switch cabinets can be effectively solved, the cost increase caused by additionally arranging the dehumidifier (1) can be effectively controlled, the dehumidification effect is good, and the dehumidification quality can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a dehumidification device for high-voltage switch cabinets. Background Art

[0002] The voltage levels of high-voltage switch cabinets are generally from 10 kV to 1000 kV, among which voltage levels such as 10 kV, 35 kV, 66 kV, 110 kV, 220 kV, 330 kV, 500 kV, 750 kV, and 1000 kV are relatively common. Taking the 35 kV switch cabinet of our company's wind farm as an example, the fans are installed on the ridge at an altitude of 1200 - 1500 meters, and the air is very humid. The humidity in the core areas such as the insulating sleeves and 35 kV cable joints inside the 35 kV switch cabinet needs to be lower than 55%. In the existing high-voltage switch cabinets, external humid air penetrates into the switch cabinet, the air inside the cabinet does not circulate, and the humid air condenses into water and condenses on the surface of the cabinet body or electrical components, which will bring greater potential hazards, mainly including: First, it causes the insulation strength of the insulating sleeve to decrease, the cable head to break down and spark, resulting in potential safety hazards to the equipment; Second, when the electrical components inside the switch cabinet operate in a high-humidity environment for a long time, the components are prone to aging and cause component damage; Third, the switch cabinet is prone to corrosion and rust. Although there are dehumidification devices for the interior of high-voltage switch cabinets on the market, most of them are for an independent switch cabinet and cannot use one dehumidification device to take into account multiple high-voltage switch cabinets. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a dehumidification device for high-voltage switch cabinets that can take into account more than one high-voltage switch cabinet and has a good dehumidification effect.

[0004] The technical solution adopted by the utility model to solve its technical problem is: The dehumidification device for high-voltage switch cabinets includes a dehumidifier arranged on the cabinet body, an air duct system arranged inside the cabinet body, and a drying air duct with one end connected to the dehumidifier and the other end connected to the air duct system. The air duct system includes an air inlet duct, air duct branches, and an adjusting mechanism arranged in the air duct branches for adjusting the air outlet angle.

[0005] There are two or more drying air ducts arranged at the upper end of the cabinet body, and one end of the air inlet duct is communicated with the drying air duct and the other end is communicated with the air duct branch.

[0006] Further, the number of the drying air ducts is two, the dehumidifier is a rotary dehumidifier, and the rotary dehumidifier is arranged at the upper end of the cabinet body and communicated with the two drying air ducts.

[0007] Further, it also includes a rotating connection head. One end of the rotating connection head is rotatably connected to the air inlet duct, and the other end is provided with a screwing end. The end of the drying air duct is provided with a threaded end adapted to the screwing end.

[0008] Further, the shape of the screwing end is a hexagonal prism.

[0009] Further, ventilation holes are formed in the side wall of the air duct branch pipe, and a flow guide plate is arranged in the air duct branch pipe, and the flow guide plate is connected to the adjusting mechanism.

[0010] Further, the air duct branch pipe is rectangular, an adjusting hole is arranged at the end side of the air duct branch pipe, the adjusting mechanism includes an adjusting rod, and the adjusting rod passes through the adjusting hole and is connected to the flow guide plate.

[0011] Further, a limiting flexible retaining ring is sleeved on the adjusting rod, a retaining ring is arranged on the outer edge of the adjusting hole, and a limiting rib is arranged on one of the limiting flexible retaining ring and the retaining ring, and a limiting groove is arranged on the other.

[0012] For this high-voltage switchgear dehumidification device, the dehumidifier is installed on the top of the high-voltage switchgear, and one dehumidifier is shared by every two or more switchgears. The dry air of the dehumidifier is divided into two or more parts and blown from the top inside the switchgear to the inside of the cabinet body, which can completely solve the problem of condensed water on the insulating bushing and cable head. The high-voltage switchgear dehumidification device of the present utility model can effectively solve the problem that one dehumidifier cannot take into account multiple high-voltage switchgears, can effectively control the cost increase caused by adding dehumidifiers, and moreover, a dehumidifier with a suitable power is selected according to the number of high-voltage switchgears, and the dehumidification effect is good, and the dehumidification quality can be effectively guaranteed. Description of the Drawings

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0014] Figure 1 is a schematic structural diagram of a high-voltage switchgear and a dehumidification device according to an embodiment of the present utility model;

[0015] Figure 2 is a partial schematic structural diagram of a high-voltage switchgear and a dehumidification device according to an embodiment of the present utility model;

[0016] Figure 3 is a schematic structural diagram of a dehumidification device according to an embodiment of the present utility model;

[0017] Figure 4 is Figure 3 an enlarged view of part B of

[0018] Figure 5 is a schematic structural diagram of a dehumidification device according to an embodiment of the present utility model;

[0019] Figure 6 is a partial side view of the structure of a dehumidification device according to an embodiment of the present utility model;

[0020] Figure 7 is a partial schematic structural diagram of a dehumidification device according to an embodiment of the present utility model.

[0021] Description of Reference Numerals:

[0022] 1. Dehumidifier; 2. Dry air duct; 21. Threaded end; 3. Induction air duct; 4. Air duct branch; 41. Ventilation hole; 42. Adjustment hole; 5. Rotating connector; 51. Screwing end; 6. Deflector; 7. Adjustment mechanism; 71. Adjusting rod; 72. Limiting flexible retaining ring; 73. Retaining ring; 74. Limiting rib; 75. Limiting groove; 100. Cabinet body. Detailed Embodiment

[0023] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the detailed embodiment of the present utility model will now be described in detail with reference to the accompanying drawings.

[0024] As Figure 1-7 shown, a dehumidification device for a high-voltage switchgear includes a dehumidifier 1 provided on the cabinet body 100, an air duct system provided inside the cabinet body 100, and a dry air duct 2 with one end connected to the dehumidifier 1 and the other end connected to the air duct system. The air duct system includes an induction air duct 3, an air duct branch 4, and an adjustment mechanism 7 provided inside the air duct branch 4 for adjusting the air outlet angle.

[0025] There are two or more dry air ducts 2 arranged at the upper end of the cabinet body 100. One end of the induction air duct 3 is connected to the dry air duct 2, and the other end is connected to the air duct branch 4.

[0026] In this high-voltage switchgear dehumidification device, the dehumidifier 1 is installed on the top of the high-voltage switchgear, and one dehumidifier 1 is shared by every two or more cabinets. The dry air of the dehumidifier 1 is divided into two or more parts and blown from the top inside the switchgear into the cabinet body 100, which can completely solve the problem of condensate water on the insulating bushing and cable head. The high-voltage switchgear dehumidification device of the present utility model can effectively solve the problem that one dehumidifier 1 cannot take care of multiple high-voltage switchgears, can effectively control the cost increase caused by adding dehumidifiers 1, and can select a dehumidifier 1 with an appropriate power according to the number of high-voltage switchgears, with good dehumidification effect and effective guarantee of dehumidification quality.

[0027] In this embodiment, the number of dry air ducts 2 is two, and the dehumidifier 1 is a rotary dehumidifier 1. The rotary dehumidifier 1 is provided at the upper end of the cabinet body 100 and is connected to two dry air ducts 2. The rotary dehumidifier 1 is placed on the top of the high-voltage switchgear, and one dehumidifier 1 is shared by every two cabinets. The dry air of the dehumidifier 1 is divided into two parts and blown from the top of the insulating bushing inside the switchgear into the cabinet body 100. Since the dry air of the dehumidifier 1 is very dry, generally with a humidity below 30%, the problem of condensate water on the insulating bushing and cable head can be completely solved.

[0028] To achieve a convenient connection between the drying air duct 2 and the air duct system, a rotating connector 5 is further included. One end of the rotating connector 5 is rotatably connected to the air guide duct 3, and the other end is provided with a screwing end 51. The end of the drying air duct 2 is provided with a threaded end 21 adapted to the screwing end 51. Preferably, the outer shape of the screwing end 51 is a hexagonal prism.

[0029] Considering that different devices can be installed in the high-voltage switchgear, ventilation holes 41 are provided on the side wall of the air duct branch 4, and a flow guide plate 6 is arranged in the air duct branch 4. The flow guide plate 6 is connected to the adjustment mechanism 7, and the angle of the flow guide plate 6 is adjusted through the adjustment mechanism 7, so as to adjust the air flow direction flowing through the ventilation holes.

[0030] In this embodiment, the air duct branch 4 is rectangular, and an adjustment hole 42 is provided on the end side of the air duct branch 4. The adjustment mechanism 7 includes an adjustment rod 71, and the adjustment rod 71 passes through the adjustment hole 42 and is connected to the flow guide plate 6. A limiting flexible retaining ring 72 is sleeved on the adjustment rod 71, a retaining ring 73 is arranged on the outer edge of the adjustment hole 42, and one of the limiting flexible retaining ring 72 and the retaining ring 73 is provided with a limiting rib 74, and the other is provided with a limiting groove 75.

[0031] By screwing the adjustment rod 71, the direction of the flow guide plate 6 is adjusted, and through the cooperation of the limiting flexible retaining ring 72 and the retaining ring 73, the angle of the flow guide plate 6 is fixed, and the adjustment is convenient and fast.

[0032] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0033] Obviously, the above embodiments are only examples given for clear illustration, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creative utility model.

Claims

1. A high-voltage switch cabinet dehumidification device, comprising a dehumidifier (1) arranged on a cabinet body (100), an air duct system arranged inside the cabinet body (100), and a drying air duct (2) having one end connected to the dehumidifier (1) and the other end connected to the air duct system, characterized in that: The air duct system comprises an air duct (3), an air duct branch pipe (4), and an adjustment mechanism (7) disposed in the air duct branch pipe (4) for adjusting an air outlet angle. The drying air ducts (2) are two or more and are arranged at the upper end of the cabinet (100); one end of the air duct (3) is connected to the drying air duct (2) and the other end is connected to the ventilation duct branch (4).

2. The high-voltage switch cabinet dehumidification device according to claim 1, characterized in that: The number of the drying air ducts (2) is two, and the dehumidifier (1) is a rotary dehumidifier (1). The rotary dehumidifier (1) is arranged at the upper end of the cabinet (100) and is connected to the two drying air ducts (2).

3. The high-voltage switch cabinet dehumidification device according to claim 1, characterized in that: It also comprises a rotating connector (5), one end of which is rotatably connected to the air duct (3), and the other end of which is provided with a screwing end (51), and the end of the drying air duct (2) is provided with a threaded end (21) adapted to the screwing end (51).

4. The high-voltage switch cabinet dehumidification device according to claim 3, characterized in that: The screwing end (51) has a hexagonal prism shape.

5. The high-voltage switch cabinet dehumidification device according to any one of claims 1 to 4, characterized in that: A ventilation hole (41) is provided on the side wall of the air duct branch pipe (4) and a guide plate (6) is provided inside the air duct branch pipe (4), wherein the guide plate (6) is connected to the regulating mechanism (7).

6. The high-voltage switch cabinet dehumidification device according to claim 5, characterized in that: The air duct branch pipe (4) is rectangular, an adjustment hole (42) is provided at the end side of the air duct branch pipe (4), and the adjustment mechanism (7) comprises an adjustment rod (71), and the adjustment rod (71) passes through the adjustment hole (42) and is connected to the guide plate (6).

7. The high-voltage switch cabinet dehumidification device according to claim 6, characterized in that: The regulating rod (71) is sleeved with a limit flexible retaining ring (72), the outer edge of the regulating hole (42) is provided with a retaining ring (73), and one of the limit flexible retaining ring (72) and the retaining ring (73) is provided with a limit convex rib (74), and the other is provided with a limit groove (75).

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