What is it for
The systems are used for thermal vacuum dehydration and degassing of lubricating oils and electrical insulators to extract free and soluble water, gas, and for particulate removal. They are applied during the installation, repair and operation of oil-filled high-voltage equipment.
what does it consist of
– the system is mounted on a metal frame 1;
– vacuum container 2;
– gear pump 3;
– vacuum pump 4;
– controller attached 5;
– pipe;
– primary cartridge filter 6;
– fine cartridge filter 7.
The vacuum vessel is a cylindrical chamber that is placed in a casing. There are also electric heaters to heat the oil in process in the casing. The container is thermally insulated on the outside. At the top of the chamber is an oil sprayer. The vacuum vessel is connected to the atmosphere through the moisture separating filter and the accelerator. The rate of exhaustion in the chamber is regulated by the throttle.
Gear pumps are equipped with a bypass line that has taps and safety valves. The drive mechanism of each pump is a three-phase asynchronous motor with a squirrel-cage rotor (2.2 KW and 1440 rpm).
The vacuum pump is designed for in-chamber exhaustion.
The vacuum piping is equipped with a siphon compensator, back pressure valve, moisture separator, non-return valves and vacuum reducing valves.
The heater drive circuit is interconnected with the pump drive circuit. In the control cabinet there is the magnetic starter, the heat regulator that supports the set temperature range, the indicator lamp.
How does it work
The purification system works in the following modes
– filtration mode
– thermal vacuum filtration, heating and purification mode
– degassing mode
filtration mode
Through the inlet valve and mesh filter, the deteriorated oil is sucked by the gear pump, and then through the primary cartridge filter and the three-way valve to the processed oil container.
Thermal vacuum filtration, heating and purification mode
Through the inlet valve and the mesh filter, the deteriorated oil is sucked into the gear pump and through the primary filter to the vacuum container housing. There, the oil is heated by electric heaters up to 60 °C and then transferred to the sprayer of the vacuum vessel. The vacuum in the container is supported by the vacuum pump. The rate of stripping into the vessel is regulated by the throttle and controlled by the vacuum gauge. The air reaches the container through the moisture separator. Gases and vapors are removed from the oil surface with an upward current of air to dry the oil. The moist air is then extracted through the moisture separator into the atmosphere with the vacuum pump. The gear pump directs the purified oil through the fine filter and back valve to the purified oil container.
degassing mode
Being sucked in by the gear pump, the deteriorated oil moves through the inlet valve, mesh filter and cartridge filter to the vacuum pot shell to be heated there and directed to the sprayer. As mentioned above, the vacuum is backed up by the vacuum pump. The separation of gases from the oil takes place in the sprinkler. The vacuum pump draws the gases through the oil separator into the atmosphere. Being directed by the gear pump, the degassed oil moves through the fine filter and return valve to the purified oil container.
Design properties:
The reduced dimensions and weight of the system allow it to be used as mobile with the help of a trolley and to treat the oil on site.
The UVM-EP-10-0.6 and UVM-EP-10-4.0 models enjoy an explosion proof design (EP stands for explosion proof). Such construction of the system allows to work in environments with possible risk of explosion.
Note: each model can go with a trailer, so it is available to apply to online activities.