A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
On-site investigations of the work of thrust bearings with elastic metalloplastic segments at a high oil temperature
Conclusions 1. An increase in the oil temperature in baths of bearings with EMP segments from 30–35 to 60°C leads to a decrease of friction losses by 20–30% due to a decrease of the oil viscosity in the oil film, and also produces an additional effect from a reduction of the consumption of water for cooling. 2. A decrease of the operating reliability of the bearings with EMP segments does not occur when the oil temperature in the bath is increased to 60°C. Therefore there is no need to introduce restrictions in the operating regimes of the units. 3. The existing systems of sealing the oil baths of the bearings do not prevent the escape of oil vapors from the oil baths at an oil temperature of 55–60°C. Therefore reconstruction of the seals is necessary before changing to an oil temperature increased to 60°C. 4. On operating units of hydrostations it is expedient to increase the oil temperature in the baths of the bearings from 30–35° to 45–50°C by reducing the flow rate of the cooling water or disconnecting a part of the coolers, which leads to a decrease of friction losses by 12–15% and does not noticeably increase the escape of oil vapors from the bearing baths. 5. On newly designed bearings with EMP segments it is expedient to specify a smaller number of oil coolers, and it is possible to do away with them entirely by increasing the cooling capacity of the walls of the oil baths, for example, by means of fins on them. 6. To reduce losses in the bearings, the use of other, less viscous oils or other low-viscosity liquids is possible.
On-site investigations of the work of thrust bearings with elastic metalloplastic segments at a high oil temperature
Conclusions 1. An increase in the oil temperature in baths of bearings with EMP segments from 30–35 to 60°C leads to a decrease of friction losses by 20–30% due to a decrease of the oil viscosity in the oil film, and also produces an additional effect from a reduction of the consumption of water for cooling. 2. A decrease of the operating reliability of the bearings with EMP segments does not occur when the oil temperature in the bath is increased to 60°C. Therefore there is no need to introduce restrictions in the operating regimes of the units. 3. The existing systems of sealing the oil baths of the bearings do not prevent the escape of oil vapors from the oil baths at an oil temperature of 55–60°C. Therefore reconstruction of the seals is necessary before changing to an oil temperature increased to 60°C. 4. On operating units of hydrostations it is expedient to increase the oil temperature in the baths of the bearings from 30–35° to 45–50°C by reducing the flow rate of the cooling water or disconnecting a part of the coolers, which leads to a decrease of friction losses by 12–15% and does not noticeably increase the escape of oil vapors from the bearing baths. 5. On newly designed bearings with EMP segments it is expedient to specify a smaller number of oil coolers, and it is possible to do away with them entirely by increasing the cooling capacity of the walls of the oil baths, for example, by means of fins on them. 6. To reduce losses in the bearings, the use of other, less viscous oils or other low-viscosity liquids is possible.
On-site investigations of the work of thrust bearings with elastic metalloplastic segments at a high oil temperature
Aleksandrova, A. E. (author) / Plaxtonov, N. G. (author)
Hydrotechnical Construction ; 24 ; 686-693
1990-11-01
8 pages
Article (Journal)
Electronic Resource
English
Temperature control of thrust bearings with elastic metal-plastic segments
| Online Contents | 1988
Temperature control of thrust bearings with elastic metal-plastic segments
| Springer Verlag | 1988