Why should monitoring and protection of bearing temperature be set for oil-free air compressors? Two support points are set at both ends of the rotor of the oil-free air compressor, and corresponding radial bearing bushes are placed. Due to the high-speed operation of the rotor, a pressure oil film with bearing capacity and lubricating effect is formed in the gap between the journal and the bearing bush, as is the thrust bearing bush. The continuous and sufficient supply of lubricating oil provides material conditions for the formation of the pressure oil film, but the formation of the oil film and the oil film carrying capacity are also related to the lubricating oil temperature.
If the temperature of the lubricating oil is too high, the oiliness and viscosity of the lubricating oil will be reduced, paint spray gun supplier and the oiliness and viscosity of the lubricating oil have reduced the oil film. Under the continuous oscillation of the rotor load, it is easy to cause local damage to the oil film. Oil film damage is a prerequisite for lubrication failure and bearing bush burnout failure. Therefore, the upper limit of the lubricating oil temperature should be monitored and protected, so as not to affect the formation of the oil film and reduce the bearing capacity of the oil film. Therefore, the sudden increase of bearing temperature may be the standard of bearing bush or other mechanical failure. In the past, most of the cases depended on the return oil temperature. Now most of the pads have thermal resistance or thermocouples near the babbitt back, which can be monitored very sensitively. Variation of Wawain.
For the safe and smooth operation of the unit, the monitoring and protection measures of rotor vibration are very important. The vibration of rotating equipment is generated with the high-speed rotation of the rotor, which is inevitable. However, the generation of vibration, especially the development of vibration, has an impact on the safe operation and service life of rotating equipment.
Therefore, from the structural design of the equipment, the manufacturing and assembly process to the installation and maintenance, it is very important to pay attention to this problem. In the production and use, the vibration condition is often used to evaluate the pros and cons of the equipment running state. In order to know and master the operation status of equipment at any time, most of the large-scale units of petroleum industry enterprises are equipped with online monitoring and protection facilities for equipment vibration. During the operation and operation of the equipment, most of the mechanical faults can be reflected from the vibration signal. Therefore, for the safe and smooth operation of the unit, the monitoring and protection measures of the rotor vibration are very important. Usually set accordingly.
a