Air drying equipment unit Sukhovei
The Mojave Heat hot air dryer unit is designed for drying of air and removal of solid particles from atmospheric air, as well as for sorbent drying. Dry purified air can be used for purging of transformer tanks and electrical equipment during installation, service or repairs to prevent dielectric insulation from accumulating moisture while the core is exposed.
TECHNICAL DESCRIPTION
Dried and purified air can be used for purging of transformer tanks and electrical apparatus during their assembling, servicing and maintenance, it is done for prevention of electric insulation from water intrusion when the active core is open to outside of environment. Unit operation mode – continuous.
COMPONENTS DESCRIPTION
The unit is a metal container, divided into two compartments. The unit operation principle is based on atmospheric air drying in two synthetic zeolite-filled adsorbers, which operate in cycles, dry air is purified from mechanical impurities in dust filter.
I – hot air outlet for adsorbent regeneration in other machines;
II – dry heated air output from the unit;
III – air output after adsorbent regeneration in the adsorber
Air Drying Equipment
General view
1 – container; 2 – air blower; 3 – inlet filter; 4 – compensator; 5,6,7,8 – ball valves; 9 – air distributor; 10 – left hand adsorber; 11- right hand adsorber; 12- lef hand air heater, 13 – right hand air heater; 14 – air ducts; 15 – dust filter; 16 – control cabinet; 17 – plug; 18 – dry air bleed valve; 19 – manometer; 20, 21 – ball valves; 22,23 – ball valves; 24 – insulation.
The air blower 2 is installed in the lower compartment; the blower’s inlet is equipped with inlet filter 3, and the outlet is connected to air distributor 9 with ball valves 5, 6, 7, 8. The air distributor also features manometer 19 and two ball valves 22 and 23 designed for excessive air volume relief, with noise suppressors. The upper compartment is separated into two parts by a screen. One of the parts contains adsorbers 10 and 11 with air heaters 12 and 13. The adsorbers are filled with synthetic zeolites and are insulated with mineral wool. Air ducts 14 are connected to the air heater 12 and 13 to supply air to adsorbent regeneration and to discharge dry air.
| Parameter | Value | |
| Mojave Heat 0.7 | Mojave Heat 4 | |
| Dry air capacity, m3 /minute, min / cubic yard | 1.7/2.223 | 2.5/3.27 |
| Dry air dew point, °С/°F, max | -50/-58 | -50/-58 |
| Dry air pressure, MPa/bar, max | 0.018/0.18 | 0.025/0.25 |
| Max dry air temperature, °С/°F | 90±15/194±27 | 90±15/194±27 |
| Adsorbent load, kg/lbs, max | 190/419.9 | 190/419.9 |
| Number of adsorbers. | 1 | 2 |
| Zeolite regeneration temperature, °С/°F, max | 430/806 | 430/806 |
| Air heater power, kW, Max | 24 | 24 |
| Nominal power consumption, kW max | ||
| Air drying (normal operating mode) | 1 | 5.05 |
| Sorbent regeneration in one adsorber | 25 | 30 |
| Sorbent regeneration in two adsorbers | – | 55 |
| Nominal power voltage at 50Hz/ 60Hz, V (Electric power can be fully customized on request ) | 380 | 380 |
| Output air temperature for regeneration of external adsorbents, °С/°F, max | 430/806 | 430/806 |
| Duration of adsorbent regeneration, hours | 4 | 2-4 |
| Dry air filtration fineness, micron | 5 | 5 |
| Dimensions, mm/ft, max: | ||
| • length | 1350/4’5’’ | 1500/4’11’’ |
| • width | 800/2’8’’ | 1200/3’11’’ |
| • height | 1700/5’7’’ | 2100/6’11’’ |
| Weight, kg/lbs, max | 550/ 1,215.5 | 1050/ 2,320.5 |
- protect the insulation system from moisture;
- carry out depressurization in several stages, with a complete assembly of transformer;
- prevent heating of transformer.