CN207069381U - A kind of dehydrating unit of switch cubicle - Google Patents

Abstract

The utility model discloses a kind of dehydrating unit of switch cubicle, the dehydrating unit has：Air door, air blower, drying box, airduct, ventilating opening, airduct are sequentially connected air inlet ventilation mouth, air intake air door, air blower, drying box, air outlet air door, air draft ventilating opening.Air door has：It is respectively provided at the first air door at air inlet ventilation mouth, the second air door and the 3rd air door, the 4th air door that are located at air draft ventilating opening.Drying box has：Gas-tight door, door are provided with transparent windows；Drying box, the moisture in discoloration silica-gel desiccant absorption air on drying box；Heater, it is placed in drying box, heat drying agent after energization.

Description

A dehumidification device for a switch cabinet

technical field

The utility model relates to the technical field of electric power equipment, in particular to a dehumidification device for a switch cabinet.

Background technique

Switchgear is a very common electrical equipment, but it is easy to cause creepage and flashover accidents when condensation occurs inside the equipment, so it is necessary to equip the switchgear with a dehumidification device. At present, there are semiconductor dehumidification devices for switch cabinets on the market, which use semiconductor refrigeration to condense water vapor, but the effect of semiconductor dehumidification is not obvious or even invalid at high and low temperatures, and cannot meet the dehumidification requirements of the large temperature range of the equipment throughout the year.

Aiming at the problems in the related technologies, no effective solution has been proposed yet.

Utility model content

Aiming at the above-mentioned technical problems in the related art, the utility model proposes a dehumidification device for a switchgear, which can solve the problems existing in the prior art such as poor dehumidification effect at high and low temperatures.

For realizing above-mentioned technical purpose, technical scheme of the present utility model is realized like this:

A switch cabinet dehumidification device has:

damper, which is arranged at the air inlet end and the air exhaust end of the gas flow path;

There are two air intake vents and two exhaust air vents at the end of the air duct, the air intake vents and the exhaust air vents are connected side by side respectively, and one of the air intake vents and one exhaust air vent is located at Inside the switchgear;

A blower, which is arranged at the rear of the damper at the air inlet end;

Drying box, which is arranged on the downstream side of the blower, close to the wall of the switch cabinet;

The air duct is sequentially connected to the air inlet vent, the air inlet end damper, the blower, the drying box, the air exhaust end air outlet, and the exhaust air vent. The drying box is provided with several parallel hollowed out square boxes filled with color-changing silica gel desiccant; The hollow square box is provided with a heater.

Further, an airtight door is opened on the side of the drying box close to the wall of the switch cabinet, and a transparent material observation window is provided on the door, and an airtight door slightly larger than the airtight door is provided on the wall of the switch cabinet opposite to the airtight door. Open and close the door at one point, and a window is correspondingly arranged on the said switch door.

Further, the surfaces of the drying box, the air duct near the air inlet of the drying box, and the air duct downstream of the drying box are wrapped with heat-insulating materials.

Further, the larger surface of the hollow square drying box is installed facing the airflow direction.

Further, the damper control part is installed outside the switch cabinet.

The beneficial effects of the utility model: the desiccant dehumidification effect is good in high temperature or low temperature environment, and when there is no need to turn on the blower, the air outlet can also automatically absorb moisture to prevent moisture accumulation and save energy.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic structural diagram of a dehumidification device for a switchgear according to an embodiment of the present invention.

In the figure: 1. Observation window; 2. Switch cabinet; 3. Drying box; 4. Blower; 5. First damper; 6. Second damper; 7. Heater; 8. Drying box; 9. Airtight door; 10. The third damper; 11. The fourth damper.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in Figure 1, a dehumidification device for a switchgear according to an embodiment of the present invention includes a vent, a damper, an iron air duct, a blower, and a square iron drying box.

The vents are arranged at the end of the gas flow path, and the air inlet vents and the exhaust vents are respectively connected side by side, and one of the air inlet vents and one exhaust vent is arranged inside the switch cabinet; the damper is arranged near the vents, In the figure are the first air door 5, the second air door 6, the third air door 10, and the fourth air door 11. The air door can perform opening and closing actions, and its control part is installed outside the switch cabinet, which is convenient for the operator to operate; blower 4 configuration At the rear of the damper at the air inlet end, after power-on, the airflow flows in the direction of the arrow shown in the figure; the drying box 3 is arranged on the downstream side of the blower, installed close to the wall of the switch cabinet, and an airtight door 9 is provided on the wall-attached side. A glass observation window 1 is provided on the airtight door 9, and a slightly larger switch door is provided on the wall of the switch cabinet opposite to the airtight door, and a window is also provided on the door, through which the drying oven can be observed for 3 miles. In the case of desiccant, the outer surface of the drying box is wrapped with heat-insulating material to insulate the heat in the drying box.

In a specific embodiment of the present utility model, the drying box 3 includes several hollow square drying boxes 8 filled with a color-changing silica gel desiccant, and a heater 7 is arranged in the drying boxes 8 . The larger surface of the drying box is installed facing the direction of air flow, and is connected with the wall of the drying box by bolts so that the desiccant has a better absorption effect. The drying box 8 can be installed or disassembled through the airtight door 9, which is convenient for maintenance and maintenance. replace. The color of the color-changing silica gel desiccant will change after absorbing water, and the color-changing silica gel desiccant containing water will lose water when heated at about 120°C, and the original color will be restored and reused to absorb water; desiccant.

In one embodiment of the present invention, the air inlet vent, the air inlet end damper, the blower 4, the drying box 3, the air exhaust end damper, and the exhaust air vent are sequentially connected through an air duct, and the air duct is close to the drying oven. The outer surface near the box and the downstream side of the drying box are wrapped with heat insulating material.

In order to facilitate the understanding of the above-mentioned technical solution of the present utility model, the above-mentioned technical solution of the present utility model will be described in detail below through specific usage modes.

In specific use, close the first damper 5 and the third damper 10, open the second damper 6 and the fourth damper 11, turn on the blower 4, the air forms a circulation inside the switch cabinet 2, and when the moisture in the air passes through the drying box 3 , absorbed by the desiccant.

The color of the desiccant will change after absorbing moisture. When the color change is observed through the observation window 1 and the absorbed moisture is confirmed to be sufficient, the first damper 5 and the third damper 10 are opened, the second damper 6 and the fourth damper 11 are closed, and the blower 4 and Heater 7, after heating, the moisture lost by the desiccant is discharged, stop heating after the color of the desiccant recovers, close the first damper 5, the third damper 10, open the second damper 6, the fourth damper 11, and reuse the desiccant Dehumidification. Under normal circumstances, the blower 4 can be turned off, and the desiccant naturally absorbs moisture to keep the switch cabinet 2 dry.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (5)

1. a kind of dehumidification device for switch cabinet, it is characterised in that have：

Air door, it is located at the air intake and air outlet of gas flow paths；

Ventilating opening, two air inlet ventilation mouths and two air draft ventilating openings, air inlet ventilation mouth and air draft ventilation are provided with airduct end Mouth connection side by side respectively, one of air inlet ventilation mouth and an air draft ventilating opening are located inside switch cabinet；

Air blower, it is configured at the air intake air door rear portion；

Drying box, it is arranged at the air blower downstream, Proximity switch cabinet wall, wherein,

The airduct is sequentially connected air inlet ventilation mouth, air intake air door, air blower, drying box, air outlet air port, air draft ventilation Mouthful, the drying box, including provided with provided with several hollow out rectangular box equipped with discoloration silica-gel desiccant arranged side by side, the hollow out Rectangular box is provided with heater.

A kind of 2. dehumidification device for switch cabinet according to claim 1, it is characterised in that the drying box Proximity switch cabinet wall Side is provided with gas-tight door, and door is provided with transparent material observation window, and the switch cubicle wall relative with the gas-tight door is provided with than described The slightly bigger switch gate of gas-tight door, window is correspondingly provided with the switch gate.

3. a kind of dehumidification device for switch cabinet according to claim 1, it is characterised in that the drying box, drying box air intake Airduct near mouthful, drying box downstream airduct surface is wrapped up using heat-insulating material.

4. a kind of dehumidification device for switch cabinet according to claim 1, it is characterised in that the larger face of hollow out rectangular box is just Airflow direction is installed.

5. a kind of dehumidification device for switch cabinet according to claim 1, it is characterised in that the airdoor control position is arranged on Outside switch cubicle.