Industrial Oil Purification Systems

What it is for

The systems are used for thermal vacuum dehydration and degasification of electrical insulating and lubricating oils in order to withdraw free and soluble water, gas as well as for removal of particulates. They are applied while installation, repair and operation of oil-filled high-voltage equipment.

What it consists of

- system is mounted in a metallic frame 1;
- vacuum vessel 2;
- gear type pump 3;
- vacuum pump 4;
- unitized controller 5;
- pipeline;
- primary cartridge filter 6;
- fine cartridge filter 7.

The vacuum vessel is a cylindrical chamber which is placed in a casing. There are also electrical heaters to heat oil under processing in the casing. The vessel is heat-insulated outside. In the upper part of the chamber there an oil sparger is set. The vacuum vessel is connected with atmosphere through the moisture separating filter and throttle. Rate of exhaustion in the chamber is regulated by the throttle.

The gear type pumps are equipped with a bypass line which has taps and safety valves on it. The drive mechanism of each pump is an asynchronous three-phase motor with a squirrel cage rotor (2.2 KW and 1440 rpm).

The vacuum pump is intended for exhaustion in the chamber.

The vacuum pipeline is equipped with a siphon compensator, back-pressure valve, moisture separator, non-return valves and vacuum reduction valves.

Heater drive circuit is interlocked with pump drive circuit. In the control cabinet is located magnetic starter, heat regulator supporting set range temperature, indicator lamp.

How it works

The purification system operates in modes as follows

- filtration mode
- filtration, heating and thermal vacuum purification mode
- degasification mode

The filtration mode

Through the input valve and mesh filter the deteriorated oil is sucked by the gear type pump and then through the primary cartridge filter and three-way valve goes to the processed oil vessel.

Filtration, heating and thermal vacuum purification mode

Through the input valve and mesh filter the deteriorated oil is sucked in by the gear type pump and through the primary filter goes to the casing of the vacuum vessel. There the oil is heated with the electric heaters up to 60°C and subsequently moves to the sparger of the vacuum vessel. Vacuum in the vessel is supported by the vacuum pump. Rate of exhaustion in the vessel is regulated with the throttle and controlled by the vacuometer. Air gets to the vessel through the moisture separator. Gases and vapors are carried away off the oil surface with rising stream of air so that the oil becomes dried. Next humid air is taken out through the moisture separator to atmosphere with the vacuum pump. The gear type pump directs purified oil through the fine filter and back valve to the purified oil vessel.

Degasification mode

Being sucked by the gear type pump the deteriorated oil moves through the input valve, mesh filter and cartridge filter to the casing of the vacuum vessel to heated there and be directed to the sparger. As was mentioned above vacuum is supported by the vacuum pump. In the sparger there occurs separation of gases from the oil. The gases are taken out through the oil separator to atmosphere by the vacuum pump. Being directed by the gear type pump the degassed oil moves through the fine filter and back valve to the purified oil vessel.

Design properties:

Small-scale dimensions and weight of the system permit to use it as mobile one with the help of a cart and to treat the oil on-site.

UVM-EP-10-0.6 and UVM-EP-10-4.0 models enjoy explosion proof design (the abbreviation EP stands for explosion proof). Such construction of the system permits to work in environments with possible risk of explosion.

Note: each model can go with a trailer thus it is available to be applied for on-line activities.

UVM Co., Ltd. is a Ukrainian manufacturer of high performance transformer oil purification systems and auxiliary equipment for maintenance of energy management. UVM offers a variety of systems designed for degasification, cleaning, drying, regeneration, purification, recycling, filtration , recovery, pumpdown, azotizing, heating, removal of water and particulate matter from transformer, turbine, cable and other oils.

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