Fully Automatic Dry Air Generator Dry And Purify Air Dew Point -55 to -75 ℃

Fully Automatic Dry Air Generator Dry And Purify Air Dew Point -55 to -75 ℃

1. Function
Sino-NSH ADK dry air generator is designed to provide high-purity dry air with a dew point of up to -55℃~-75℃ for large power equipment such as transformers and reactors during installation and maintenance. It can replace traditional drying methods such as hot oil circulation, nitrogen supplementation, and vacuuming to dry the inside of the transformer, which is not affected by moisture in the air, and is more effective, economical, safe, and environmentally friendly.
This device is suitable for internal operations of large transformers and is designed to ensure the safety of operators. After sending low-temperature dry air into the transformer, it prevents the intrusion of the external atmosphere while being highly dry. It can avoid accidents caused by internal operators due to sweating, conductivity, and suffocation due to lack of oxygen, and ensure the safety of internal operations of the transformer.

1. Remove moisture from the air. The dew point limit of the treated air can be lower than -80℃.
2. Remove particulate matter from the air.
3. Replace nitrogen filling drying or hot oil circulation drying during overnight construction of the transformer.
4. Provide dry air during transformer installation and maintenance to ensure dryness inside the transformer.
5. Fill the cylinder with dry air.

2. Application
When using the ADK series dry air generator for the installation and maintenance of power equipment, it will not be affected by changes in external climatic conditions, especially for overnight operations. It only needs to seal the flanges and fill the dry air to 0.02-0.03Mpa. There is no need to add oil, replenish nitrogen, or vacuumize. Transformers, reactors and other power equipment will not be affected by moisture, which greatly reduces the workload, shortens the construction period, and improves the quality of installation and maintenance. The ADK series dry air generator is also suitable for air drying and circulating drying in warehouses, packaging, electronics, medicine and other industries. It is also suitable for drying nitrogen, hydrogen of generator sets and SF6 equipment.

3. Principle
The atmosphere enters the gas storage tank through the air compressor, and most of the water is compressed and liquefied and discharged through the drain valve. The air is dried for the first time; then it enters the refrigeration dryer, the water vapor is condensed into water, and the air is dried for the second time; then it enters the adsorption dryer for the third drying, adsorbs the remaining trace water, and then passes through the high-precision air filter to the equipment that needs dry gas.

4. Structure
The ADK dry air generator is a mobile high-purity dry air generator mainly composed of an air source system, a freeze drying system, an adsorption drying system, an air filtration system and a PLC intelligent electrical control system.
Composition of the air source system: It consists of a dust filter, a screw air compressor, a radiator (air cooling), an air-water separator and a filter, and outputs clean oil-free gas.
Composition of the freeze drying system: This device mainly adopts a fully enclosed high-temperature compression refrigeration unit, which has stable and reliable performance and can obtain a larger cooling capacity. The system configuration adopts imported fully enclosed compressor units, air heat exchangers, evaporators, air-water separators and fine filters; in the refrigeration process, the R22 refrigerant first passes through a fully enclosed high-temperature compression refrigeration compressor, a cooler, a desiccant, and a solenoid valve, and finally returns to the refrigeration compressor through the evaporator, and obtains a low-temperature environment of 0-5℃ inside the evaporator.
Electrical control: The main control electrical part adopts Schneider Electric; the electrical performance of the whole machine is stable, safe and reliable.

5. Specs

6. Reference Picture