In the daily inspection of air separation equipment, the oil temperature of the expander is a key parameter that affects the stability, efficiency, and safety of equipment operation. If it is too high or too low, it will cause a series of problems.
The impact of high oil temperature reduces lubrication performance, damages oil film, and accelerates oxidation; Equipment efficiency decreases, bearing temperature increases, and cooling capacity decreases; Increased safety hazards, risk of oil blockage, and fire risk. The impact of low oil temperature, unstable lubrication performance, difficulty in forming oil film, and abnormal bearing temperature; The risk of equipment startup increases, making it difficult to start in a cold state and posing a risk of ice blockage.
The oil temperature control and temperature range monitoring in daily inspections generally require the lubricating oil temperature to be controlled at 30-40 ℃ and the oil pressure entering the lubrication point to be no less than 0.7MPa. Set high alarm values (such as 51 ℃) and low alarm values (such as 10 ℃) for oil temperature, and promptly detect abnormalities. Regular maintenance measures include cleaning the oil cooler at least once a year, and increasing the cleaning frequency if the cooling water is not clean. Regularly check the resistance of the oil filter. If the resistance increases significantly, clean or replace the filter element. Check the lubrication performance (appearance, viscosity, composition, etc.) of the oil every 2 months to ensure that the oil quality is qualified.
Optimize operation to avoid prolonged operation of equipment in high-temperature environments. If necessary, install cooling tower fans or adopt other cooling measures. Adjust the sealing gas pressure according to the operating status of the equipment to prevent abnormal oil temperature caused by poor sealing.
