PRINCIPLES OF NAVAL ENGINEERING 



CENTRIFUGAL SPEED 

 LIMITING GOeNOR 



OIL DAM 



THRUST 



COLLAR 

 DOUBLE POPPET 

 STEAM VALVE 



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SCREW 

 OIL PUMP 



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EXHAUST 



Figure 16-5.— Auxiliary turbine for main condenser circulating pump. 



47.10X 



therefore discussed in connection with the 

 blowers, in chapter 15 of this text. 



The pressure lubrication system shown in 

 figures 16-7 and 16-8 is designed for fuel oil 

 service pumps, fuel oil booster pumps, and lu- 

 bricating oil service pumps; however, it is 

 similar in principle to the lubricating systems 

 of many other units. 



In the system illustrated, the bottom section 

 of the gear casing forms the oil reservoir. The 

 reservoir is filled through an oil filler hole in 

 the top of the casing and emptied through a drain 

 outlet at the base of the casing. The shaft, which 

 carries the gear-type oil pump on one end and 

 the governor on the other end, is geared to the 

 pump shaft. The pump shaft is in turn geared to 

 the turbine shaft. 



426 



