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Time：2025-04-25 11:41:24 Reading volume：
Turbine oil purifier is a key equipment specially used for purifying, dehydrating, degassing and removing impurities to maintain the performance of turbine oil (turbine oil). Turbine oil plays important functions such as lubrication, cooling, speed regulation and insulation in steam turbines, gas turbines, water turbines and generator sets. Its cleanliness directly affects the life of the equipment and operational safety.
(1) Removal of moisture (dehydration)
- Free water: liquid water mixed in the oil (such as condensed water, leaked water).
- Dissolved water: trace amounts of water dissolved in the oil (affected by temperature and humidity).
- Hazards: Water will reduce the lubricity of the oil, accelerate oxidation, and cause rust and sludge formation.
(2) Removal of gas (degassing)
- Dissolved gases such as air and hydrogen: Under high temperature and high pressure conditions, gas is easily mixed into the oil.
- Hazards: Bubbles affect the lubrication effect, which may cause cavitation, oil film rupture, and bearing wear.
(3) Filter solid particles
- Metal wear debris: metal particles generated by the friction of bearings and gears.
- Dust, fiber: external pollutants enter the oil system.
- Hazards: particles will scratch precision parts (such as servo valves) and block the oil circuit.
(4) Control acid value (anti-oxidation)
- Oxidation products: acidic substances and colloids generated after long-term operation of oil.
- Hazards: increased acid value will corrode metal parts, form sludge, and affect the sensitivity of the speed control system.
(5) Extend the life of oil products
- Through continuous purification, reduce oil degradation, reduce the frequency of oil changes, and save maintenance costs.
Turbine oil purifiers usually adopt the "vacuum + filtration + adsorption" combination technology:
1. Primary filtration
- Remove large particle impurities through a 20-50 μm coarse filter.
2. Heating (optional)
- Heat high viscosity oil to 40-60℃ to improve fluidity.
3. Vacuum dehydration and degassing
- The oil is atomized in a vacuum tank (≤0.1 kPa), and the water and gas evaporate and are extracted.
4. Precision filtration
- Use a 1-5 μm fine filter to intercept fine particles.
5. Coagulation separation (optional)
- Use a coalescing filter to gather emulsified water into large droplets, and then discharge them through a separation filter.
6. Adsorption purification (deep treatment)
- Use activated carbon or silica gel to adsorb colloids and acidic substances (suitable for aged oil).
- Water content: ≤100 ppm (ISO 4406)
- Cleanliness: ≤NAS 6 grade (ISO 4406)
- Acid value: ≤0.2 mg KOH/g (ASTM D664)
- Air release value: ≤5 minutes (ISO 9120)
| Comparison items | Ordinary oil purifier | Turbine oil purifier |
|------------------|------------------------|----------------------------------|
| Dehydration capacity | Only free water is removed | Dissolved water can be removed (vacuum deep dehydration) |
| Filtration accuracy | 10-50 μm | 1-5 μm (high accuracy) |
| Degassing function | No or simple degassing | High-efficiency vacuum degassing |
| Demulsification treatment | None | Optional coalescence separation system |
| Applicable oils | Ordinary hydraulic oil, lubricating oil | High-end oils such as turbine oil and turbine oil |
- Flow matching: ｓｅｌｅｃｔ according to the system oil volume (such as 1000 L/h, 5000 L/h).
- Vacuum degree: The higher the better the dehydration effect (recommended ≤0.1 kPa).
- Automation degree: PLC control, online monitoring of moisture and particle size.
- Mobility: The Fixed type is used in power plants, and the mobile type is used for on-site maintenance.
The turbine oil purifier ensures the lubricity, oxidation resistance and cleanliness of the turbine oil through dehydration, degassing, precision filtration and adsorption regeneration, prevents equipment failure and extends the life of the unit. It is suitable for turbine oil system maintenance in the fields of power, petrochemical, shipbuilding, new energy, etc.
