Working Principle of Dry Air Generator
It is specially designed to provide high-purity dry air with a dew point as low as -55℃ to -70℃ for installation and maintenance of large power equipment such as ultra-high voltage transformers, extra-high voltage transformers, and reactors. It can replace traditional drying methods like hot oil circulation, nitrogen supplementation, and vacuum drying, but is more efficient, economical, safe, and environmentally friendly.
During installation and maintenance of power equipment, it is not affected by changes in external climatic conditions—even in rainy seasons, normal construction can proceed. For overnight work, simply seal the flanges and fill with dry air to 0.02-0.03Mpa. This greatly reduces workload, shortens construction period, and improves installation and maintenance quality.
Applications
Using a vacuum generator as the vacuum source, equipped with a 5L vacuum buffer tank, it is truly oil-free, noiseless, lightweight, and odorless, with noise far lower than ordinary oil-free vacuum pumps. The control cabinet can freely set upper and lower limits and automatically maintain vacuum. (Maximum vacuum can reach -85KPA, flow rate is 75L per minute)
This machine only needs to be connected to AC220V power and plug in the air pump to use. It is simple and quick to operate, can suck in ordinary liquids, and automatically blow them out of the equipment.
Automatic pressure-holding oil-free vacuum pump, used for vacuum suction cups, dry air generator can quickly achieve stable adsorption force, then automatically maintain pressure, energy-saving and low consumption, with stable adsorption force for rapid vacuum creation.
Precautions
1. Since the compressor is an inductive load, the instantaneous current during power on/off is several times higher than normal operation, which may easily blow fuses. Use an 8A fuse.
2. If the compressor does not start during operation and the thermal overload relay activates, it indicates the compressor temperature is too high. It will automatically recover after cooling down.
3. To avoid excessive water accumulation in the machine affecting air purity, press the drain switch for a few seconds before each shutdown. (You can connect a plastic bottle to the drain outlet to prevent water splashing). Drain at least once a day.
4. Observe the color-changing silica gel through the observation window. Users can replace with new silica gel or perform drying treatment as needed.
5. To ensure gas purity, the activated carbon needs to be replaced every 1000 hours of operation (activated carbon is 20-40 mesh, pencil lead type).
6. Since the compressor operates in an open-circuit mode, lubricating oil will be discharged with water, causing consumption. Therefore, after one year of use, appropriately add lubricating oil to the compressor. The oil filler port is next to the compressor outlet (or can be added from the inlet). It is recommended to add 200g of No. 18 refrigeration oil.
7. The inlet filter needs regular cleaning (frequency depends on indoor dust conditions; ultrasonic cleaning can be used) to maintain smooth air intake. Otherwise, it may cause increased compressor load and heat, and if temperature is too high, overheating protection may trigger shutdown.
Product Features:
♦ Unique rapid regeneration technology for desiccant:
Using rapid regeneration technology, qualified dry air can be provided after 5-20 minutes of operation. Truly ready to use immediately without waiting.
♦ Low dew point of product gas:
The core indicator is the supply air dew point; the lower the dew point, the drier the air. Low dew point dry air will absorb moisture from the transformer to improve its insulation performance. The dry air combines compression drying, refrigeration drying, and adsorption drying, and uses a multi-stage filtration system. Due to the use of our company's independently developed "strong composite molecular adsorbent", regardless of the moisture content in the air, the dew point of the product gas will quickly drop below -70℃.
♦ High-efficiency filtration system:
Using "gradually denser" filtration technology, filtration precision can reach 0.01μm, with solid particle retention rate as high as 99.99%. The primary filter has a precision of μm, the secondary filter has a precision of 0.1μm, and the tertiary filter has a precision of 0.01μm.
♦ Completely abandon heating regeneration of adsorbent:
The adsorbent adopts a non-thermal pressure differential fully automatic regeneration method, completely eliminating the need for manual baking of the adsorbent.
♦ *"One-touch control" technology:
Using PLC intelligent controller, just press the "Start" button to start the equipment. The equipment operates fully automatically, minimizing manual operation errors.
Technical Parameters:
Output air relative hydrocarbon concentration: <0.1ppm
Maximum input air relative hydrocarbon concentration: <100ppm
Maximum input air pressure: 0-0.5MPa (factory set 0.4 MPa )
Maximum output flow rate: 0-5000ml/min
Operating ambient temperature: 0-40℃
Operating ambient humidity: <85%
