Product Introduction
Intelligent dehumidification device is the use of semiconductor refrigeration dehumidification mode, the initiative to the confined space of the humid air under the action of the fan suction dehumidification air duct, the water vapor in the air through the semiconductor refrigeration mechanism after condensation into water, and then through the water pipe discharge out of the cabinet, can achieve a good dehumidification effect. By reducing the water content in the air, the relative humidity and absolute humidity decrease at the same time, almost do not increase the temperature, do not produce the negative impact of the temperature difference, fundamentally eliminate or reduce the occurrence of accidents, and will not accelerate the aging of the cabinet devices and cabinets due to high temperatures. The intelligent dehumidification device changes the passive anti-condensation method to actively guide the condensation, effectively preventing the aging of the equipment in the cabinet, the reduction of insulation strength, the breakdown of secondary terminals, the material change and the rust of steel structural parts, etc., to ensure the safe operation of the power grid. The occurrence of condensation inside the equipment causes creepage and flashover accidents, which generally occur in the following situations: first, the regional humidity is high, the weather temperature changes greatly, the bottom of the switch cabinet is wet, and some cable grooves even have water; the second is that some of the switch cabinets are in the basement, the humidity is high, the temperature inside the cabinet, especially the temperature close to the ground, is lower than the ambient temperature Third, some equipment is in a temporary shutdown state, the small ambient temperature in the electrical cabinet is lower than the ambient temperature around it, and it is very easy to form condensation on its surface. Accidents ensued. In order to ensure the safe operation of the power grid system and the long life, safe and effective use of electrical equipment, the power system puts forward higher requirements for moisture-proof and condensation-proof in the cabinet.
Intelligent dehumidifier
Scope of application
1. GIS control cabinet, high and low voltage switch cabinet, ring network cabinet, outdoor terminal box, mechanical control cabinet, box substation, dry substation and other electrical equipment;
2. Integrated circuits, silicon crystals, liquid crystal devices, ceramic devices, resistive components, active devices, connectors, SMD devices, CPUs, computer boards moisture-proof storage;
3. Moisture-proof storage of physical and chemical instruments, experimental materials, and insulation materials for moisture-proof management of chemicals, drugs, food, fibers, and biological agents.
How it works
The series of intelligent dehumidifiers is composed of power supply system, air supply system, semiconductor cooler, temperature and humidity detection control circuit, heating circuit, and drainage pipeline.
Dehumidification principle
When the moist air is sucked in by the fan, the flow through the specially designed air duct is first cooled and condensed by the semiconductor cooler, and the condensation of the refrigerator is dripped into the drainage tank under the action of gravity, and then flows out of the cabinet by the water pipe. After sufficient circulation dehumidification within the set starting value, the air humidity in the cabinet is reduced to below the condensation point, and the entire moisture-proof condensation heating process is completed. At the same time, the intelligent dehumidifier signal acquisition sensor is external, which can accurately collect the real humidity in the cabinet in real time, ensuring that the intelligent dehumidification device starts the dehumidification in advance when the condensation condition will be reached in the cabinet.
Low temperature heating function
When the temperature of the box is lower than the set starting value, the dehumidification device starts the internal heater circuit (the heater is externally connected, and the power can be connected to 500W), until the box temperature rises to the set starting value plus 5 °C, and the heater circuit stops working.
RS485 communication function
When the dehumidifier with RS485 communication function receives the data of the host computer, the data is immediately replied to the host computer after analyzing the data, and a computer can be connected to a maximum of 255 units.
Installation and wiring
