Steam Turbine Lube Oil Cooler | Cool Turbine Lubricant To Stabilize Lubrication System Operation
Turbine lube oil cooler is an essential shell-and-tube heat exchanger supporting steam turbine units in thermal and nuclear power plants. Its core function is to continuously cool high-temperature lubricating oil circulated inside the turbine lubrication system, control oil viscosity within the standard range, and guarantee stable, safe operation of the whole lubrication system.
During turbine high-speed operation, friction between bearings, rotors and shafts generates massive heat, which sharply raises the temperature of circulating lubricating oil. The lube oil cooler is installed in series on the lubricant circulation pipeline. Cooling water flows through the tube side, while hot turbine lube oil flows through the shell side. Heat is efficiently transferred from lubricating oil to cooling medium, bringing oil temperature back to the normal working range.
Control lubricating oil temperature to maintain stable viscosity High-temperature oil will turn thin and lose complete lubricating film, leading to metal dry friction. The cooler keeps oil viscosity qualified to form uniform protective oil film on bearing surfaces.
Slow down oil oxidation and extend service life Long-term high temperature accelerates oil deterioration, sludge and carbon deposition. Effective cooling reduces oil aging frequency and lowers oil replacement cost.
Protect turbine bearings and rotor components Avoid bearing overheating, ablation and unit trip caused by insufficient cooling of lubricant.
Ensure continuous full-load operation of turbine units Stable oil temperature eliminates thermal fluctuation interference on the lubrication system.
Optimized shell-and-tube structure designed for turbine lube oil heat exchange, low flow resistance
Optional tube bundle materials: carbon steel, stainless steel, copper-nickel alloy for different cooling water conditions
Reinforced tube sheet and anti-vibration baffle to adapt long-term unit continuous operation
Detachable water box and pull-out tube bundle for regular descaling and internal cleaning
Strict hydraulic pressure and air tightness test, compliant with power station industry standards
Custom cooling capacity, inlet/outlet size and mounting dimension for various turbine models
Application
Coal-fired thermal power plant steam turbine lubrication system
Nuclear power plant secondary circuit turbine oil cooling unit
Industrial self-provided steam turbine generator sets
Waste heat power generation turbine supporting cooling equipment
