NSH VFD series Ultra-High Voltage Double-Stage Vacuum Transformer
Oil Filtration Machine, 500MVA Substation
I. Application of Transformer Oil Filtration Machine
The main function of NSH VFD series Ultra-High Voltage Double-Stage
Vacuum Transformer Oil Filtration Machine is for the removal of
dissolved water, gas and solid impurities from
insulating/transformer oil, so as to recover its purity, and
improve the dielectric strength, and meet the standards of reuse.
This machine is designed for the up to 500KV power transformers.
II. Main Systems of Transformer Oil Filtration Machine
1. Oil Transfer System
2. Oil Heating System
3. Precise Filtration System
4. Vacuum Dehydration System
5. Vacuum Pump System
6. Condensing System
7. Safety Operation System
8. Electrical Control System
etc.
III. Main Functions of Transformer Oil Filtration Machine
1. Vacuum dehydration, degassification of transformer oil.
2. Filtration (removal of impurities) of transformer oil.
3. Vacuum drying of electric equipments include transformers.
4. Oil filling of electric equipments.
5. Transformer Evacuation.
IV. Working Flow of Transformer Oil Purifier
1. The insulating oil is conveyed into the plant by means of
pressure difference. Oil will firstly flow through a coarse filter,
which can filter out large particles and mechanical impurities from
insulating oil.
2. Oil is heated uniformly by electric heater with less specific
heat transfer of 1.7w/cm², thus the deterioration of the oil caused
by overheating is avoided during this process.
3. The special vacuum tank create a large oil surface and a
resulting thin film, where the oil flows track and static water
evaporation area were expanded to the largest extent, so that the
effect of dehydration and degassing is maximized effectively. The
particular double-stage vacuum pump system and pressure-boost
technical make vacuum degree in vacuum tank higher than that in
common oil purifier plant. Specially-designed oil level controller
in the vacuum tank assures a continuous oil flow-through in the
plant, thus resulting in an optimised dehydration and degassing of
the oil. With the double-stage vacuum oil purifier, the
installation period and maintenance period can both be shortened
effectively.
4. After degassing and dehydration under vacuum, the oil is
conveyed by through the fine filter and out of the plant.
5. Oil Circulation is recommended to achieve better effect of
purification and filtration.
V.Machine Specification
| Item | Unit | VFD-30 | VFD-50 | VFD-80 | VFD-100 | VFD-150 | VFD-200 | VFD-300 |
| Flow Rate | L/H | 1800 | 3000 | 4800 | 6000 | 9000 | 12000 | 18000 |
| Vacuum Range | Mpa | -0.092 ～ -0.099 |
| Working Pressure | Mpa | ≤0.2 |
| Max Vacuum Range | Pa | ≤50 |
| Temperature Range | ℃ | 20 ～ 80 |
| Power Supply | | 380V/3P/50Hz(or as needed) |
| Working Noise | dB(A) | ≤72 | ≤78 |
| Heating Power | Kw | 24 | 30 | 48 | 60 | 90 | 120 | 150 |
| Total Power | Kw | 29 | 36 | 56 | 69 | 100 | 132 | 170 |
| Pipeline Diameter | mm | DN25 | DN32 | DN32 | DN40 | DN40 | DN50 | DN65 |
| Net Weight | Kg | 600 | 800 | 900 | 1150 | 1500 | 1700 | 2400 |
| Size | length | mm | 1350 | 1500 | 1550 | 1900 | 2200 | 2400 | 2900 |
| width | mm | 1100 | 1200 | 1250 | 1400 | 1500 | 1600 | 1800 |
| high | mm | 1700 | 1750 | 1800 | 1800 | 1850 | 1900 | 2000 |
VI. Available Style of Transformer Oil Purifier
1. Fixing type,mobile type with four wheels and mobile type with
trailer.
2. Normal appearance type,shelf-covering type and explosion-proof
type.
3. Avaliable in different color.
About us:
►We are the leading manufacture near 25 years experience and supply
best quality and highest cost performance oil purification
machines. Our oil purifier equipment are built by high quality raw
materials with newest advanced technology by many skilled
technicians and professional workers. We are honest to every
customer and responsible for every machine we sold, we offer great
after sales service, anytime when customer need us, no matter
before or after purchase, we are available online or calling, to
make a fast and instant response to customer.
►we practiced in this industry during all these years, and have
rich on-site experiences too. Any on-site cases, please contact us
for a solution.
►For detailed product specifications, please leave us your email or
mobile no. To send you the catalog. Thank you.
