The bearing and fever, do how?

High bearing temperature is common and harmful rotating equipment, will reduce the use of the bearing life, increase the maintenance cost, when the temperature increases quickly, the temperature exceeds bid, the inviting unit not plan stop or reduce load operation, which had a great influence on economic benefits. Therefore, hurtling the reasons at the discriminant problem obtained when the measures of treatment, is the guarantee of equipment for safe operation. Incur high bearing temperature through the common reason of 1) Smooth smooth, such as the lack of or too smooth, smooth oil quality will not agree with the request, change, or impurities; 2) Cooling is insufficient, such as pipeline infarction, chooses inappropriate cooler, the cooling effect is poor; 3) Bearing abnormalities, such as bearing damage, bearing assembly process, the various parts of the bearing box clearance adjustment does not agree with the request; 4) Vibration is big, such as poor coupling alignment process does not agree with the request, the rotor is dynamic and static imbalance, poor foundation rigidity and the anchor, rotating stall and surge. When the bearing temperature is high, should first deal with the problem from the following several aspects: 1) Amount to inappropriate, smooth oil too little or too much work shall, in accordance with the request of bearing box regularly to refuel. After bearing oiling sometimes presents the condition of high temperature, mainly oil too much. Then phenomenon as the temperature continues to rise from time to time, arrived at some point after Common in higher than normal operating temperature around 10 ℃ to 15 ℃) Land will remain unchanged, and then gradually. 2) Bearing grease don't agree with the request or contaminated by smooth oil use not appropriate, not easy to form the average smooth oil film, unable to reduce the bearing internal friction and wear, the lack of smooth, bearing temperature rise. When different types of oil mixture, chemical reaction may attack, grease metamorphosis, agglomerate formation, reduce the smooth effect. Contaminated by oil will make bearing temperature, in the process of grease into the dust, form the oil pollution, cause internal oil degradation is damaged bearings bearing box is smooth, the temperature rise. Therefore should choose suitable grease, maintenance of bearing housing and bearing stop cleaning, filling line stop check dredging, different type of oil do not mix, if change to other type of grease, should be the original oil and liquidation; Regular operation and maintenance grease, grease do moistureproof and dustproof measures should be properly kept. 3) Cooling can not check line infarction, feed temperature and return water temperature can exceed bid. If choose inappropriate cooler, cooling effect is poor, cannot satisfy the using request, should be timely stop switch or tied for device new cooler. Axial flow fan should also check the core insulation and sealing. 4) Confirm there is no check again after the above issues coupling and searching to find is condition and bearing coupling was fit process specification. In axial flow fan, hydraulic coupler for timing should also consider equipment heat shrinkage problems in operation. The induced draft fan impeller side due to thermal contraction, bearing box increases; Hydraulic coupling temperature bearing housing contraction during operation, bearing, thus find timing motor, the size of the reserve amount according to the characteristics of the equipment and the temperature parameters of the operation. Bearing inspection mainly include the following: 1) Bearing the quality of the collapse during the bearing box, first of all, check grease can have smooth transformation, agglomerate, adverse conditions such as impurities, this is one of the important according to the discriminant bearing damage reason. Second, check the bearing have chewed and wear; Check the bearing inner and outer ring, rolling body, adhere to the appearance of the brightness and presence of cracks, rust, discoloration defects such as peeling, pits, overheating, measurement of bearing clearance can limit; Look for wear, pit shaft sleeve, peeling, if there is more than love should be a change in the new bearing. 2) Bearing with the bearing device of bearing inside diameter and shaft, outer diameter and the matching of the shell is very important, when cooperate with too loose, mating surface will produce relatively sliding as the creep. Once produced to wear matching surface, creep damage of shaft or housing, and wear into the bearing internal powder and fever, vibration and destroyed. Interference is too big, can cause small outer diameter or inner ring diameter larger, decrease the bearing internal clearance. Useful for selecting suitable to cooperate, to consider the nature of the bearing load, size, temperature condition, the rotation of the inner ring outer shape factors of various conditions. 3) Bearing parts fit clearance adjustment bearing clearance after hours, due to the shear friction loss in oil in the gap is too big, will also provoked bearing heating, at the same time, the clearance after hours, oil amount decreased, too late to take away the heat generated by the friction, will further progress of bearing temperature rise. But the gap is too large will change the bearing dynamic characteristics, provoked the rotor unstable operation. Thus demand for different devices and use the option to verify the condition of the bearing clearance.