Main Feed Pumps Parts

(Page 5) End item NSN parts page 5 of 51
Part Number
NSN
NIIN
0068-00-000-3406 Annular Ball Bearing
005165490
00699067520417 Pipe Elbow
005425144
008-061-001PC5 Dial Indicating Pressure Gage
008724776
008326 Roller Chain
000182462
00916303 Pipe To Tube Elbow
009213245
00927097 Annular Ball Bearing
001448589
009A4145 Plain Encased Seal
008087595
009BB001-25 Bearing Ball
001981050
00P00000-1524 Annular Ball Bearing
005543468
00P00000-4880 Annular Ball Bearing
002939163
00P00013-5305 Annular Ball Bearing
001448648
00P00013-5387 Annular Ball Bearing
001448648
00P00014-0207 Annular Ball Bearing
001448648
01-005180-005 Annular Ball Bearing
002939163
01-005184-203 Annular Ball Bearing
001089247
01-005184-205 Annular Ball Bearing
001091157
01-005184-305 Annular Ball Bearing
001448519
01-005248-207 Annular Ball Bearing
001448663
Page: 5 ...

Main Feed Pumps

Picture of Main Feed Pumps

A deaerating feed tank (DFT), often found in steam plants that propel ships, is located after the main condensate pump and before the main feed booster pump. It has these three purposes:

Based on the relevant theoretical Rankine cycle diagram, there are four main processes, or steps:

In the practical implementation of a Rankine cycle, it is common to break the single pump (process 1 to 2) into three pumps: (in water flow order: condensate pump, feed booster pump and then feedwater pump).

A surge volume allows the plant to change bells (power output level) without running the feed pump dry or flooding the turbines. Consider the plant running in a steady state condition.

The bell is increased, more power output demanded, the rate of feed is increased. This draws more water from the condenser, perhaps to the point of being dry and starving the boiler resulting in a loss of propulsion. This is until the water, converted to steam, provides its energy to the turbine and then is condensed in the condenser.

지금 비교»
맑다 | 숨기다