Weak current College】 【centrifugal compressor lubricant choice --- Power By】 【China power house network.

Core Tip: lubricant variety, performance, and therefore, the user should be based on centrifugal compressor bearing category, operating speed, payload size and technology environment, appropriate selection, its principles and basis of selection are the following:

Keywords: centrifugal compressor lubricant

Lubricant variety, performance, and therefore, the user should be based on centrifugal compressor bearing category, operating speed, payload size and technology environment, appropriate selection, its principles and basis of selection are the following:

First, the work load

Working load is bearing (or friction pair) directly under static and dynamic load two aspects of the load, the choice of lubricant should be fully taken into account, in a liquid lubrication conditions, the higher the viscosity of the lubricant, the greater their capacity; in boundary lubrication conditions, the effect of viscosity on improved lubrication, its oily and resistance to extreme pressure properties appear to be indispensable, you should use anti EP performance better lubricant, or for shock loads, reciprocating motion or oil film formation in difficult situations, should use grease or solid lubricant. Centrifugal compressor bearing diameter contains bearings in General.

Second, the movement speed

Relative movement speed of the bearing (or friction pair) structure design of important parameters, and also the lubricant selection considerations, General relative motion speed low bearing appropriate selection of lubricating oil viscosity is large, in the interest of oil-film formation and maintain; centrifugal compressor general speed is relatively high, reaching more than 10000r/min, so use smaller lubricant viscosity.

III. operating temperature

Working temperature means the bearing operating temperature of the environment, as well as on the influence of temperature, if the ambient temperature is low, should use small, low-viscosity of the lubricant products freezing point; the ambient temperature is high, you should choose the viscosity of the lubricant, shandiangao; when the bearing operating temperature change is large, you should use good viscosity-temperature performance, high viscosity index lubricant. In short, the choice of lubricant, depending on the bearing operating temperature of the mix of reasonable, reliable work.

4. lubrication

Gap filling lubrication or Lube easy erosion regions, should use good adhesion, the viscosity of the lubricant; centrifugal compressor generally use continuous, forced lubrication, so should use relative viscosity smaller, resistance to oxidation stability, antirust, anti foam and lubricating properties of oil products.

5. operating environment

If the compressor compressed media on lubricant with special requirements, you should use the appropriate have on media resistance properties of lubricants, such as ammonia compressor lubricant of ammonia, etc. In addition selected oil should reference equipment manufacturer recommended lubricant.
To sum up, in the selection of a lubricant, is to consider the equipment working and environmental conditions that meet the needs of the operation of equipment; the second is to minimise lubricant of varieties, in order to facilitate the management of the lubricant.