Vacuum oil purifier

What is a vacuum oil filtration machine?

Vacuum oil purifier is an oil purification machine designed according to the different boiling points of water and oil. It is mainly used to purify moisture, gas and impurity particles in transformer oil, turbine oil, etc. The vacuum oil purifier is composed of a vacuum heating tank fine filter, a condenser, a primary filter, a water tank, a vacuum pump, an oil drain pump and an electrical cabinet. The oil filter has high working efficiency and good water removal effect.

How vacuum oil filtration machine works

The vacuum oil filtration machine is designed according to the different boiling points of water and oil. The vacuum pump draws out the air in the vacuum tank to form a vacuum. Under the action of atmospheric pressure, the external oil enters the prefilter through the inlet pipe to remove larger particles. , and then enter the heating tank. After heating, the oil at 40~75 ℃ passes through the automatic oil float valve. This valve automatically controls the balance of the oil entering and leaving the vacuum tank. The heated oil is separated into a semi-mist through the nozzle, and the water in the oil is rapidly evaporated into water vapor and continuously sucked into the condenser by the vacuum pump. The water vapor entering the condenser is cooled and then returned to the original water and released. The oil in the vacuum heating tank is discharged into the fine filter by the oil discharge pump, and the particulate impurities are filtered out through the oil filter paper or filter element, so as to completely remove the impurities , water and gas in the oil. so that clean oil is discharged from the oil outlet.

Technical parameter

Model	XZLY-25	XZLY-32	XZLY-50	XZLY-100	XZLY-150	XZLY-200
Flow rate	25L/min	32L/min	50L/min	100L/min	150L/min	200L/min
Pressure	0.6MPa
Rated vacuum	≤ -0.095
Water content	5-30ppm
Air content	≤0.2%
First class micron	100um
Second class micron	10um, 20um
Third class micron	3um, 5um
Voltage	380V 50HZ 3PH , or others
Power	18KW	26KW	36KW	65KW	65KW	135KW

 

Performance characteristics

Vacuum system:
It consists of vacuum tank, vacuum pump, condensation tank, liquid accumulation tank and air supply system. The structure has been optimized to greatly increase the surface area of ​​the oil in the vacuum system and maximize the residence time of the oil in the vacuum system. The moisture and gas in the oil can escape more. The machine adopts advanced technology, so that the oil purifier will never spray oil when it is working.
Filtering system:
The oil purifier adopts three-stage filtration, and the coarse filter at the suction port can protect the oil pump and prolong the service life of the main filter. There are two-stage fine filters after the oil pump, which can make the oil reach a high degree of cleanliness. The filter material is made of glass fiber material, which can filter particles of different diameters in layers, which greatly improves the service life of the filter element. The filter has a perfect structure, which can effectively reduce the surface flow rate of the filter material and obtain stable filtration accuracy.
Heating system:
The oil purifier adopts stage-by-stage heating, the surface heat load is less than 1.0W/cm2, and the oil will not deteriorate due to excessive temperature. The oil temperature can be adjusted arbitrarily from 0 to 100°C, automatically controlled, and equipped with a protection device. When the oil amount is too low, it will automatically stop working to avoid damage to the heater caused by dry burning.
Automatic Control System:
This machine adopts a series of automatic control instruments such as frequency converters, liquid level transmitters, temperature sensors, and vacuum sensors to collect various information about the operation of the equipment, which is processed by the central processor and automatically controls the operation of the entire equipment. And monitor the health of the device. This machine is equipped with various protection devices (overload protection, overvoltage protection, phase sequence protection, abnormal operation shutdown protection), which can ensure the safe operation of the equipment.
Machine structure:
The whole machine adopts an integrated bridge structure, which reduces the volume. The overall removable oil tank is adopted to ensure oil-free operation on the ground and reduce environmental pollution.

The role of vacuum oil filtration machine

Clear water
The free water and dissolved water in the oil will reduce the oil lubricity, oxidize the oil and form an acid to deteriorate the oil, and the oil without water is easy to oxidize and form organic acids even when exposed to high temperature. The presence of organic acid compounds can cause corrosion. Water can accelerate the thermal degradation of the oil to form particulates or carbonaceous materials. The presence of water also causes the oil to polymerize to form macromolecules. Polymerization causes viscosity changes to form large solids that can clog orifices and wear out system components. The high-efficiency vacuum oil filtration machine can remove 100% of free water and more than 95% of dissolved water.
Clear air
The high-efficiency vacuum oil filtration machine can remove 100% of free air and up to 75% of dissolved air, and the air is removed as the oil passes through the vacuum tank. Other gases are also reduced during oil purification.
Remove solid particles
In order to remove the particulate matter suspended in the oil, the high-efficiency vacuum oil purifier can filter out the particles that cause wear of bearings, pumps and valves through three-stage filtration. It also removes sludge that can build up in the valve plug-sleeve clearance and cause seizing and instability in the electro-hydraulic servo valve.

How to use a vacuum oil filtration machine

Preparations before start-up:

1. Open the electrical box and check whether all electrical components are in good condition.
2. Check whether the rotation direction of the motor is correct, which should conform to the direction of the indicating arrow.
3. Check whether the bolts of various parts of the machine are loose, and check whether the oil level of the vacuum pump of the oil filtration machine reaches the oil mark line.
4. Close the cooler drain valve and all drain valves.
5. Check whether each steel wire hose is loose.
6. Check that the oil inlet and outlet valves of the oil purifier are in the closed position.

Steps of start the vacuum oil filtration machine:

1. Open the electrical box door and close the power switch.
2. Start the vacuum pump system, when the negative pressure of the vacuum gauge reaches -0.06Mpa, open the oil inlet valve of the vacuum oil purifier, and check that the oil enters the coarse filter - heater - vacuum tank from the main oil tank.
3. When the oil level of the vacuum tank reaches the center of the observation hole, you can turn the oil drain master switch to the automatic position. When the oil level of the vacuum tank reaches the high oil level, the oil drain pump will start automatically, and the oil drain valve will be opened immediately to drain the oil. To the main fuel tank, the pump will automatically stop when the oil level drops to the low line.

Precautions during operation

1. During the oil filtering process, when the moisture content of the turbine oil is too high, a large amount of oil foam will be generated in the vacuum tank. At this time, the anti-air valve should be opened to reduce the vacuum, and the oil foam of the observation hole should be kept below the center of the observation hole for normal operation. The vacuum operation can be adjusted during the operation, but pay attention to observe that the oil level of the vacuum tank is below the center hole.
2. The working temperature of the vacuum pump should not exceed 75 degrees.
3. The temperature of the motor cannot exceed 60 degrees.
4. Pay attention to the pressure gauge on the fine filter. If the gauge pressure is 0.4Mpa, the filter must be stopped and cleaned.
5. If the oil intake is found to be reduced, check the coarse filter immediately. If the filter screen of the coarse filter is blocked, it must be stopped for cleaning.

How to stop a vacuum oil filtration machine

1. Stop the heating system.
2. Stop the vacuum pump and open the air valve.
3. Stop the oil discharge pump and close the oil inlet and outlet valves.

Application

1. All kinds of oil-immersed transformers, oil-immersed current and voltage transformers and high-voltage oil-less circuit breakers are used for on-site oil filtering and oil replenishment.
2. It is more effective to carry out on-site hot oil circulation drying, especially for oil-immersed current, voltage transformers and high-voltage oil-less circuit breakers.
3. It can be used for on-site vacuum oil injection and oil replenishment and equipment vacuuming for sealed oil-immersed equipment.
4. It can also be used to regenerate and purify the slightly deteriorated transformer oil to make its performance meet the qualified oil standard.
5. It can also be used in power plants, power stations, power companies, substation industry, metallurgy, petrochemicals, machinery, transportation, railways and other industries.

What to pay attention to when using vacuum oil purifier

1. Turn on the power supply, and the ground wire must be connected to operate.
2. Before operation, pay attention to the rotation direction of the motor, which should be in accordance with the direction of the arrow.
3. When there is no oil circulation, do not turn on the heater, otherwise it will burn out the heater, and it will fry if it is heavy.
4. Before draining the oil, all valves of the oil outlet pipe must be opened.
5. The working environment temperature is lower than -30℃ and higher than +40℃, so it is not suitable for use.