RU2772997C1 - Complex for ultra-deep drying, purification and degassing of dielectric liquids - Google Patents

Abstract

FIELD: liquid dielectrics drying, purification and degassing.

SUBSTANCE: proposed invention relates to the field of ultra-deep drying, purification and degassing of liquid dielectrics, preferably turbine, fire-resistant, transformer, aviation and hydraulic oils. A complex for ultra-deep drying, purification and degassing of liquid dielectrics, characterized in that it contains an inlet and outlet pumps, coarse filters, one of which is installed behind the inlet pump, and the other is made with a filtration fineness that is superior to the previous coarse filter, ball valves, coalescent filter, ultra-deep electrostatic filters with focusing electrodes installed in parallel inside them, mesh filter, installed in front of the suction pump, a vacuum thin film evaporator with a vacuum pump installed in front of the coalescent filter, an air filter to prevent contaminants from entering the vacuum thin film evaporator and float sensors to determine the oil level in the vacuum thin film evaporator tank, sensors to determine moisture and industrial purity.

EFFECT: improvement of oil quality indicators, as well as an increase in the service life of oils and their operation.

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Description

The invention relates to the field of ultra-deep drying, purification and degassing of liquid dielectrics, preferably turbine, fire-resistant, transformer, aviation and hydraulic oils.

From the prior art, a scheme for ultra-deep cleaning of dielectric liquids is known, including a set of: electrostatic filters, coarse filters and a turbo dryer RU 2594412 U1, B03C 5/00, 20.07. 2016

Also known is the circuit of filters for ultra-deep cleaning of dielectric liquids RU 2717856 U1 B03C 5/00 05/15/2018. The circuit consists of an oil supply pump, coarse filters, a percolation-aspiration dryer and ultra-deep electrostatic filters.

The task to be solved by the claimed invention is to implement a product that meets modern requirements for safety, energy and resource saving, increasing the service life of oils and their operation.

The problem is solved due to the fact that the complex for ultra-deep cleaning of liquid dielectrics contains a vacuum thin-film evaporator with a vacuum pump and a coalescent filter, ball valves, coarse filters, one of which is installed behind the suction pump, and the second behind the oil tank of the vacuum thin-film evaporator, with a fineness of filtration superior to the previous coarse filter, an exhaust pump, sensors for determining moisture and industrial purity class, float sensors, packages of electrostatic ultra-deep filters installed in turn, inside which focusing electrodes are placed in parallel. The achieved technical result consists in the optimal arrangement of a vacuum thin-film evaporator with a coalescer filter to remove moisture and gases, coarse filters, one of which is installed after the suction pump, and the second behind the oil tank of the thin-film dryer, with a fineness of filtration superior to the previous coarse filter, exhaust pump, sensors for determining moisture and industrial purity class, float sensors, packages of ultra-deep cleaning electrostatic filters arranged in turn, inside which focusing electrodes are placed in parallel.

The invention is illustrated by a diagram that does not cover and, moreover, does not limit the entire scope of claims of this technical solution, but is only illustrative material of a particular case of execution.

In FIG. 1 shows a diagram of a complex for ultra-deep drying, purification and degassing of dielectric liquids. In FIG. 2 photos of a complex for ultra-deep drying, purification and degassing of dielectric liquids.

The scheme of the complex for ultra-deep drying, cleaning and degassing of liquid dielectrics consists of: 1 - ball valve (contaminated oil inlet), 2 - two-way shut-off valve with electric drive, 3 - three-way ball valve with electric drive, 4 - suction pump, 5 - three-way ball valve with electric drive, 6 - FGO-1 (coarse filter), 7 - ball valve for air discharge, 8 - differential pressure gauge, ball valve 9 for draining oil from FGO-1, pressure gauge in front of FGO-1 10, ball valve 11 for adjusting the oil supply on the atomizer, 12 - atomizer, 13 - coalescence filter (oil mist filter), 14 - condensed water drain valve, 15 - vacuum thin-film evaporator with oil tank, 16 - ball valve, 17 - ball valve for supplying oil from the oil tank of the thin-film evaporator to the pump pumping, 18 - pumping pump, 19 - float level sensor, 20 - pressure converter, 21 - float switch (maximum oil level), 22 - float level sensor nya, 23 - vacuum pump, 24 - air filter, 25 - electromagnetic throttle valve (vacuum level adjustment), 26 - two-way shut-off valve with electric drive, 27 - clean oil outlet ball valve, 28 - pressure gauge, 29 - ball valve, 30 - ball valve, 31 - ball valve, 32 - ball valve, 33 - ball valve, 34 and 35 - ultra-deep electrostatic filters with focusing electrodes installed in parallel, 36 and 37 - ball valves for draining condensate from ultra-deep electrostatic filters with parallel focusing electrodes 34 and 35 installed in them, 38 - ball valve, 39 - thin-film evaporator, 40 - purified oil sampler, 41 - contaminated oil sampler, 42 - moisture content sensor, 43 - sensor for determining the class of industrial purity of oil 44 - control valve vacuum level, 45 - air filter, 46 - mesh filter, 47 - FGO-2 (coarse filter), 48 - ball valve, 49 - ball valve, 50 - differential pressure gauge. 51 - pan for collecting oil leaks.

The operation of the complex is carried out as follows. When the ball valve (1) is open, contaminated and watered oil is supplied through a strainer (46) and a two-way shut-off valve with an electric drive (2) by a suction pump (4) to a three-way ball valve with an electric drive (3), a three-way ball valve with an electric drive (5) supplies oil to a coarse filter (CSF) (6) with a pore diameter of 20 microns, equipped with a differential pressure gauge (8), CSF (6) and (47) are designed to separate coarse particles of contaminants and partially free water, and CSF (47) has a diameter pore size 10 µm, then through the ball valve (11) the treated oil is fed through the atomizer (12) for drying into a vacuum thin-film evaporator (39), where free and dissolved moisture is removed through the condensed water drain valve (14). Vacuum thin-film evaporator (15), through a coalescent filter (13), ensures the separation of the oil-air mixture and the removal of moisture and gases from the treated oil. The vacuum level is controlled by a solenoid throttle valve (25). To prevent contaminants from entering the vacuum thin film evaporator (15), an air filter (24) is installed in front of the throttle valve. The vacuum level in the oil tank (15) is adjusted by the vacuum control valve (44). From the tank of the vacuum thin-film evaporator (15), the dried oil is pumped out through the ball valve (17) using the exhaust pump (18) and enters the coarse filter (47) with a pore size smaller than in the coarse filter (6) and through the ball valves. taps (30, 31) enters ultra-deep electrostatic filters with focusing electrodes (34,35) located in parallel inside them, where microparticles of contaminants of any chemical nature are removed from the treated oil. Air is discharged from filters (6), (47) and ultra-deep electrostatic filters with focusing electrodes (34) and (35) installed in parallel inside them through ball valves (7) and (49). After cleaning, the oil is fed back into the oil system through ball valves (36, 37), an electromechanical check valve (26) and a ball valve (27). Remains of contaminated oil from ultra-deep electrostatic filters with focusing electrodes (34) and (35) installed in parallel in them are removed through an open ball valve (33) and ball valves (29) and (32). The oil level in the thin-film evaporator tank is controlled by float level switches (22) and a float switch (maximum oil level) (21). The float level sensor (19) provides an emergency shutdown of the complex operation in case the sump (51) is filled with leaking oil. Oil sampling is carried out from samplers (40) and (41). The moisture content of the oil is monitored by the moisture sensor (42), and the industrial purity grade by the industrial purity class sensor (43). The process of ultra-deep drying, purification and degassing of oil is considered completed when the specified class of industrial purity of oil and moisture taken for analysis from the sampler (41) is reached. If the indicators of industrial purity class and moisture in samples taken from the sampler (41) correspond to the specified values, the process of ultra-deep drying, cleaning and degassing is considered completed.

The essence of the invention is illustrated by the following examples.

Example. one

Tests of the oil cleaning complex for ultra-deep drying, cleaning and degassing of dielectric liquids at the manufacturing plant of Microninter Siberia LLC, Kemerovo (purification of operational contaminated fire-resistant oil Fyrquel-l of power unit No. 4 of the Kalinin NPP with a volume of 400 liters) The oil cleaning complex was equipped with a moisture detection sensor in oil EE364 and a sensor for determining the class of industrial purity ICHZH-101:

Example 2

Tests of the oil cleaning complex for ultra-deep drying, cleaning and degassing of dielectric liquids in the lubrication system of fire-resistant oil "Fyrquel-l" TA of power unit No. 4 of the Kalinin NPP during the PPR-2019:

Example 3

Oil sample indicators and gas content before and after ultra-deep cleaning, drying and degassing of transformer oil, transformer AT-3-75 kV.

Based on the tests carried out, it can be concluded that the oil cleaning complex for ultra-deep drying, purification and degassing of dielectric liquids provides the required quality indicators for the operational fire-resistant oil "Fyrquel-l" of the lubrication and control system in accordance with RD EO 1.1.2.05.0444-2016.

Based on the tests carried out, it can be concluded that it was possible to improve all indicators of the quality of transformer oil.

Claims (1)

A complex for ultra-deep drying, purification and degassing of liquid dielectrics, characterized in that it contains an inlet and outlet pumps, coarse filters, one of which is installed behind the inlet pump, and the other is made with a filtration fineness that is superior to the previous coarse filter, ball valves, coalescent filter, ultra-deep electrostatic filters with focusing electrodes installed in parallel inside them, a mesh filter installed in front of the suction pump, a vacuum thin film evaporator with a vacuum pump installed in front of the coalescent filter, an air filter to prevent contaminants from entering the vacuum thin film evaporator and float sensors for level detection oil in the tank of a vacuum thin-film evaporator, sensors for determining moisture and industrial purity.

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