Bearing of centrifugal pump
The failure of centrifugal pump and the resulting unplanned shutdown may lead to higher maintenance costs and loss of revenue due to reduced production. Therefore, reliability is the basic requirement of the double-end supported high-energy centrifugal pump operating in oil and gas applications. If you want to optimize the pumping system, you can upgrade it during its maintenance interval to extend the time between failures
Now in order to ensure the service life of current components. Upgrading and replacing bearing components is usually a reliable way. This process needs to consider thrust size, load, oil circuit interface and rotor dynamic stability. It is usually necessary to upgrade the pump before it reaches the maintenance period, so as to reduce the total downtime of the pump.
Optimization and improvement of bearing
Sealing: It is very important to prevent impurities from immersing the pump bearing, which can directly affect its service life. Modern bearing isolator is adopted. It can effectively eliminate oil leakage and prevent dirt and water from entering the bearing box.
Bearing: through analysis of the repeated problems in pump demand and performance. In order to improve the rigidity of the rotor, the bearing span is usually shortened and the shaft diameter at the mechanical seal surface and bearing is increased. These can effectively improve the service life of mechanical seals and reduce the overall vibration.
By replacing the double-row thrust bearing arrangement with a combination of two single-row thrust bearings and 40-degree angular contact ball bearings (7000 series) installed in pairs back to back. Replace the original plastic cage with brass cage, which can effectively prolong the service life of the bearing.
If it is in high temperature application, the bearing frame connected by the whole flange can be used to increase rigidity and reduce heat conduction.
These improvements to the bearings in the bearing housing can help improve the reliability and performance of the pump. In the oil and natural gas industry, the operation of the pump may change during its use, so the performance optimization of the bearing is very important. Through its optimization design, the working reliability of the pump can be improved and the operating cost can be reduced.