Question 516Steam Plants - Assistant Engineer70% to pass
Reduction gears for main propulsion turbines are lubricated by _______________.
AI Explanation
The correct answer is C) spray nozzles at the gear meshing points.
Reduction gears for main propulsion turbines are typically lubricated by a pressurized oil spray system. This system uses spray nozzles located at the gear meshing points to distribute the lubricating oil directly onto the gear teeth and bearings. This ensures adequate lubrication and cooling of the critical reduction gear components.
The other answer choices are incorrect because: A) oil flinger rings are not used for reduction gear lubrication, B) grease cups are not used, and D) leak off lines from the lube oil cooler do not directly lubricate the reduction gears.
Related Questions
#513 The component shown in the illustration, labeled "III", is the SE-0013 #515 The component shown in the illustration, labeled "IV", is the SE-0013 #517 A ship is equipped with the illustrated turbine gear set and a right hand turning propeller. When steam is admitted to the astern element, with sternway on, the high-speed gear on the high-pressure side is _______________. Illustration SE-0016 #518 What is the significance of pinion deflection in the operation of reduction gears? #519 In a steam turbine and reduction gear main propulsion plant, the alarm sensor for low turbine oil pressure is usually installed _______________.