How to Ensure the Service Life of an Oil Filtration Machine and an Analysis of Its Operating Principle
Perhaps certain equipment—such as large nuclear power plants, power stations, and steel production lines—requires long‑term, uninterrupted operation, with shutdowns for maintenance occurring only once every few years. However, conventional oil‑filtration units often remain idle for extended periods; in many cases, they may go unused for months between uses, with the next start‑up not scheduled until several months later. Under such circumstances, it is essential to observe proper shutdown procedures for the oil‑filtration unit, as this directly affects its service life and operational performance.
First, regarding shutdown procedures: The correct sequence is to turn off the heater first—this must always be the very first step. Failure to do so may result in dry heating, damage to the equipment, or even serious hazards such as electrical leakage. Second, after switching off the heater, keep the vacuum pump and oil pump running until the oil has cooled below 50°C before proceeding. Operating the machine at high oil temperatures can adversely affect the seals. Next, stop the vacuum pump and the oil pump, then open the vent valve on the vacuum vessel to release the vacuum, as the low internal pressure may prevent the oil from being fully expelled. When draining the oil from the vessel, make effective use of the oil pump and carefully adjust the ball valves to remove any residual oil inside the machine. Finally, if the equipment will remain idle for an extended period, be sure to completely drain all remaining oil from the system.
The oil filtration unit is designed based on the principle that water and oil have different boiling points. It comprises a vacuum heating tank, a fine filter, a condenser, a coarse filter, a water tank, a vacuum pump, an oil discharge pump, and an electrical control cabinet. The turbine‑oil‑specific filtration system is tailored to meet the lubrication‑oil requirements of steam‑turbine units in power plants, thermal‑power stations, and other industrial and mining enterprises. It can perform bypass purification of turbine oil in parallel with the unit’s operation, or be deployed as a mobile solution for turbine‑oil treatment. Conventional oil filtration equipment is generally suitable only for removing trace amounts of water from oil, making it the most ideal specialized device for purifying operating oil.
Oil‑filtering units can be used for on‑site hot‑oil circulation drying of the aforementioned equipment, proving especially effective for oil‑immersed current and voltage transformers as well as low‑oil circuit breakers. Versatile and fully featured, they offer both integrated processing—comprising dehydration, degassing, three‑stage filtration, and adsorption‑based regeneration—and standalone operation for vacuum dehydration and degassing, impurity removal, and regenerative adsorption.
An oil filtration machine is used to remove water and solid impurities from oil, thereby improving its performance. It operates by utilizing the centrifugal force generated as a high-speed rotating drum spins, separating solids from the oil and achieving liquid–solid separation. When the drum ceases rotation, the clarified oil flows out of the drum, attaining the desired level of filtration and resulting in clean, high‑quality oil.
The operating principle of an oil filtration machine is quite simple: the atomized oil undergoes dehydration and degassing under vacuum, while three sets of filters remove even the finest solid contaminants, and a specialized regenerative adsorbent eliminates chemical residues from the oil.
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