Fault phenomenon: After the steam front pump is handed over to production, the temperature of the non-drive end bearing exceeds 60 ° C, and then a temporary hose is connected outside the bearing to cool down with cooling water. The temperature can drop below 55 ℃.
1). The bearing is damaged.
2), there are impurities in the bearing room.
3). Bearing oil and grease do not match.
1). Replace the non-drive end bearing.
2), clean the bearing room.
3) Replace the original bearing chamber 32 # turbine oil with Mobil 624 synthetic oil.
Effect after treatment: The temperature of the non-driving end bearing after the steam pump is normal, and the maximum temperature does not exceed 55 ° C.
Precautions: Do a good job in the inspection of the steam front pump to ensure that the oil level of the steam front pump is at the normal oil level, and it is strictly forbidden to enter impurities in the bearing room. To improve the quality of maintenance, the bearings should be installed in place during the maintenance.