Special dehumidification device for high-voltage switch cabinets

Abstract

The invention discloses a special dehumidification device for high-voltage switch cabinets, comprising a control unit, humidity and temperature sensors, a display unit and a dehumidification unit which are arranged in a high-voltage switch cabinet. The dehumidification unit comprises a dehumidification chamber arranged at the bottom of the high-voltage switch cabinet. The dehumidification chambercomprises a cooling chamber, a fan and a semiconductor refrigerating sheet. The fan is connected with the cooling chamber. The semiconductor refrigeration sheet is arranged in the cooling chamber. Thecooling chamber is provided with a water outlet at the bottom and an air outlet at the top. The air outlet is communicated with the high-voltage switch cabinet on the top of the dehumidification chamber. The water outlet is communicated with the outside of the high-voltage switch cabinet. The special dehumidification device for high-voltage switch cabinets realizes automatic dehumidification control, is small and sensitive to humidity, and can remove water vapor in air to achieve real dehumidification. After dehumidification, air can enter the high-voltage switch cabinet without water vapor condensation due to the influence of weather and environment.

Description

technical field [0001] The technology of the invention relates to the field of dehumidification of high-voltage switch cabinets, and more specifically relates to a special dehumidification device for high-voltage switch cabinets. Background technique [0002] For a long time, the high-voltage switchgear and other switchgears of the power supply and distribution system are affected by the ambient humidity. The high-voltage switchgear operates in a semi-sealed environment without good ventilation. As long as high-humidity weather occurs, the high-humidity air It will continue to invade the high-voltage switchgear. Once the high-humidity air enters, it is difficult to discharge naturally. Therefore, the equipment in the high-voltage switchgear is damp, and the insulation of electrical appliances is reduced, causing problems such as grounding of live equipment, discharge of live equipment to the ground, and short circuit of the power supply. [0003] At present, the power supply...

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Problems solved by technology

[0002] For a long time, the high-voltage switchgear and other switchgears of the power supply and distribution system are affected by the ambient humidity. The high-voltage switchgear operates in a semi-sealed environment without good ventilation. As long as high-humidity weather occurs, the high-humidity air It will continue to invade the high-voltage switchgear. Once the high-humidity air enters, it is difficult to discharge naturally. Therefore, the equipment in the high-voltage switchgear is damp, and the insulation of electrical appliances is reduced, causing problems such as grounding of live equipment, discharge of live equipment to the ground, and short circuit of the power supply.

[0003] At present, the power supply and distribution system has previously adopted the following methods to deal with the problem of moisture in the equipment: 1. Placing desiccant in the high-voltage switchgear and other switchgears can achieve a good dehumidification effect, but the desiccant needs to be replaced regularly , especially in seasons with high humidity, the desiccant is replaced more frequently, which increases the work intensity of maintenance personnel; 2. A heater is installed in the high-voltage switchgear and other switchgears, but the electric heater is only effective for the humid air in the surrounding area. Play the role of decomposing humid air, so that the humid air is separated from gas and water, and the water molecules rise after being heated, and cool down around the high-voltage switch cabinet or on the equipment around the high-voltage switch pile head, resulting in condensation, and the moisture still remains inside the cabinet. Make the electrical components in the cabinet more susceptible to moisture, which is not conducive to the safe operation of the equipment, and cannot effectively reduce the humidity inside the cabinet; 3. Multiple high-power air conditioners are used to dehumidify the high-voltage switch room. After treatment, it is found that the effect is not good. Obviously, the discharge in the interval of the high-voltage switchgear is still very obvious, and the equipment is still working in an unreliable state.

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