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® | Deep vacuum purification systems |
UVM-6 |
UVM-10M |
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The UVM-6 and UVM-10M systems are used for thermal vacuum degasification, azotizing, drying, heating and purification of transformer, cable, turbine and other oils for removal of gases, free and soluble water and particulate matter. The system is applied while installation, repair and operating of oil-filled high-voltage equipment up to 1150 kV (power transformers, high-voltage switches etc.) as well as turbines.
The system can be exploited for heating of oil-filled units with hot oil and for vacuumizing of power transformers.
The system consists of two isolated sections: the oil section and vacuum section interconnected with a vacuum conductor. The oil section is intended for degasification and removal of mechanical impurities, azotizing, heating and pumping of oil. The oil section corresponds to a metallic, heat-insulated box wherein are located a vacuum column, oil heater-filter, receiver, oil inlet and output pumps, absorptiometer with a vacuum pump, fine filter and pre-filter, control cabinet, stop and control valves, oil pipelines and vacuum conductor. The absorptiometer allows to perform a rapid analysis of residual gas content in the oil. The section operational parameters are controlled by temperature regulators with a sensor, vacuum control device with lamps, pressure-and-vacuum gages. Electrical circuit provides for switching off the system in case of the oil flow’s absence, oil heater’s overheating (with providing of a sound signal), short circuit protection, improper phase interlacing prevention, phase breakage protection. Processed oil’s temperature is maintained automatically. The vacuum section is intended for exhaust of air, non-aggressive gases and vapor previously cleaned of condensed moisture and particulates out of insulated vacuum units, particularly out of the vacuum column of the oil box. The vacuum section corresponds to a metallic box with a concreted bottom wherein are located vacuum units, an oil pump, axial blower, heating element, a tank with heaters, control cabinet, vacuum connector with a non-return valve, compensator, fly gate, vacuum meters. The vacuum section’s parameters are controlled by the vacuum meters, temperature regulators. The electric circuit is protected in the same manner as in the oil section. There is a possibility provided for the oil’s process along closed cycle. The three-stage filtration system enables to process a good amount of oil until scheduled removal of filter elements. The oil degasification is put into effect in the thermal vacuum manner along with spraying in the vacuum column. The oil is directed by the oil pump into the oil heater, after being heated and clarified from particulates the oil moves to the vacuum column wherein it is sprayed and trickles down along the inlet fittings. Tickling along the inlet fittings the oil forms a thin tape, owing to this, gases and moisture intensely vaporize. The vacuum in the column is maintained with vacuum pumps which provide removal of gases and moisture through the receiver. The degasified oil is directed through the fine filter system into the transformer. The system operates in four modes - heating and filtration - degasification and filtration - pumping and filtration - azotizing and filtration UVM-6 model consists of one section wherein oil and vacuum unit are combined. |
| ¹ | Specification | Value | Value | |
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Oil section |
UVM-10M | UVM-6 | ||
| 1 |
Capacity, m³/h:
- in the degasification, heating, filtration mode - in the heating and filtration mode |
up to 3,0 10 |
1.0 1.4 |
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2 |
The processed oil’s parameters: - volumetric gas content, % - water content, g/t - degree of filtration, mcm |
0,1 10 (0.001%) 5 |
0,1 10 (0.001%) 5 |
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3 |
Oil heater power, kW |
100 |
29 |
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4 |
Installed consumption power, kW |
115 |
36 |
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5 |
Three-phase VAC 50/60 Hz, V |
380 |
380 |
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7 |
Oil’s temperature under procession, °C |
85 |
55...60 |
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8 |
Dimensions, mm: - length - width - height |
2350 2150 2250 |
2350 2150 2250 |
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9 |
Weight, kg |
3000 |
1100 |
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Vacuum section |
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1 |
vapor pumpdown rapidity from hermetic vessel, l/s |
180 |
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2 |
end vacuum, kPa
- full without gas ballast - full with gas ballast |
6,7 õ10-2 (5õ10-3) |
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3 |
consumption power, kW |
25 |
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4 |
heating of vacuum pumps is performed with industrial oil |
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5 |
Three-phase VAC 50/60 Hz, V |
380 |
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7 |
Dimensions: - length - width - height |
2100 1300 1900 |
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8 |
Weight, kg |
3000 |
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