Vacuum Transformer Oil Purifier for Power Substation Insulating Oil
Introduction:Transformer insulating oil is the core medium for cooling and insulation of high-voltage power equipment. Once contaminated with moisture, dissolved gas and solid particles, its dielectric strength will drop sharply and bring hidden dangers to substation operation. Our vacuum transformer oil purifier integrates heating, high-vacuum dehydration, degassing and multi-stage precision filtration, which can restore the performance of insulating oil on site. It is a reliable maintenance solution widely matched with hydraulic filter and other oil filtration accessories for power grids, power plants and transformer manufacturers.
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Product Introduction
This vacuum transformer oil purifier is specially designed for the purification treatment of insulating oil in power substations, and it can also be equipped with a matched hydraulic filter to intercept fine solid pollutants during circulation filtration. The machine adopts double-stage high vacuum flash evaporation separation technology, which can efficiently remove free water, emulsified water, dissolved water, acetylene, hydrogen and other fault gases, as well as metal powder, dust and carbon particles mixed in insulating oil. Different from simple filter elements, this oil purifier realizes the integrated functions of oil purification, vacuum oil filling and transformer hot oil circulation drying. It supports online and offline oil treatment for 110kV, 220kV, 500kV and other high-voltage transformers. As a cost-effective replacement for imported oil purification equipment, it has stable performance and convenient mobile operation, which greatly reduces the purchase and maintenance cost of substation insulating oil.
Working Principle
The whole purification process is divided into pre-filtration, heating, vacuum separation, degassing dehydration and fine filtration. First, the contaminated insulating oil enters the pre-filter to remove large particles and impurities, protecting the subsequent vacuum chamber and pump set. Then the oil passes through the constant temperature heating system to reduce viscosity and improve the separation efficiency of water and gas, without causing oil aging and deterioration. The heated oil enters the vacuum separator and spreads into thin oil film through the dispersion structure. Under high vacuum environment, water vaporizes and dissolved gases escape from the oil at low temperature. Water vapor and mixed gases are extracted by the vacuum pump and separated by the condensing system. After dehydration and degassing, the oil flows through multi-stage fine filter assemblies to capture tiny particulate contaminants. Finally, the qualified insulating oil is pumped out and sent back to the transformer or oil storage tank for reuse.
Core Advantages
Excellent dehydration and degassing capacity:
Double-stage vacuum system can reduce oil moisture content to below 3ppm and dissolved gas content to a very low level, significantly improving dielectric breakdown voltage.
Multi-stage protection filtration:
Equipped with coarse filter, medium filter and fine filter, and compatible with standard hydraulic filter elements, which can effectively block abrasive particles and extend the service life of vacuum components.
Multi-functional integration:
It can complete oil purification, transformer vacuum pumping, vacuum oil injection and hot oil circulation drying, one machine for multiple purposes to meet the whole-cycle maintenance needs of substations.
Stable and safe operation:
Automatic constant temperature control, anti-overflow protection, pressure interlock and emergency stop function, suitable for outdoor field operation of power stations.
Low operating cost:
The purified insulating oil can be recycled repeatedly, avoiding frequent replacement of new oil and reducing the waste disposal cost of waste oil.
Mobile flexible design:
The whole unit is installed on a skid or trolley, convenient for transportation between different substation maintenance sites.
Application Scenarios
Regular maintenance and fault treatment of oil-immersed transformers, current transformers and voltage transformers in power substations
Vacuum oil filling and hot drying of new transformers before commissioning
Purification of insulating oil for high-voltage switchgear, reactor and oil immersed power equipment
Oil treatment for power plant main transformer and auxiliary electrical equipment
Transformer manufacturing factory oil filtering and oil injection procedure
On-site oil purification for wind power and solar power station booster transformers
Selection Guide
1.Confirm the rated processing flow:
Select 3000L/H, 6000L/H, 9000L/H, 12000L/H and other specifications according to the oil volume of the transformer and the required treatment cycle.
2.Voltage level of matched equipment:
For transformers above 220kV, it is recommended to choose double-stage high vacuum type to get better degassing and dehydration effect.
3.Working environment:
If used in high humidity and low temperature areas, configure heating system and waterproof electrical cabinet.
4.Filter configuration:
When the oil contains a large amount of metal particles and sludge, configure high-precision hydraulic filter elements and increase the filter area.
5.Optional functions:
Choose online oil quality detection module, automatic oil filling function and remote monitoring module according to the budget.
FAQ
Q1: Can this vacuum transformer oil purifier work with energized transformers?
A1: Yes, our model supports on-line purification for live transformers, with strict safety interlock protection to ensure the safe operation of power equipment.
Q2: What is the difference between this oil purifier and a single hydraulic filter?
A2: A hydraulic filter mainly removes solid particles. This vacuum oil purifier can remove moisture and dissolved gas at the same time, which is the only way to restore the insulation performance of transformer oil.
Q3: How long does it take to process a batch of insulating oil?
A3: The processing time depends on the oil volume and pollution degree. For a 50-ton transformer, it usually takes 4–8 hours to reach the qualified standard after circulation treatment.
Q4: Can the machine dry the transformer body?
A4: Yes, it has the function of hot oil circulation drying and vacuum pumping, which is widely used for moisture removal of transformer windings and insulation paper.
Q5: What is the after-sales support?
A5: We provide on-site commissioning, operation training, spare parts supply and regular maintenance guidance. All filter elements including hydraulic filter can be supplied as replacement parts.
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