Boiler feed water suppression of pump bearing fault inspection and handling measures

Boiler feed water on

boiler feed water pump bearing damage reasons on pump bearing damage after the accident occurred during commissioning, to find the cause of the accident, formulate strategies, carried out in accordance with the way of fault tree for screening, finally determine the three possible reasons:

1) thrust bearing oil shortage, the four dry friction, the temperature is too high, bearing damage.

2. The main thrust bearing adjustment pad is damaged, edge, causing thrust bearing clearance decreased;

3. clearance between the balancing drum and ring wear too high, reduces the ability of balancing drum cutting axial force and axial force of the main thrust bearing is too big, bearing damage. Thrust bearing damage accident tree below.

breakdown on pump bearing of boiler feed water check

1) Check the cleaning thrust bearing box. Tear down the water pump thrust side lower part in bearing box, take out the radial and thrust bearings 3 nozzle, the nozzle to clean them one by one, the main thrust bearing internal piping by sludge and asbestos board and nozzle residue jams, stuff are not found in the rest of the two oil nozzle internal

2) Replace the main thrust bearing adjustment gasket. Bearing box apart and found the main thrust bearing adjustment mat part has flanging and defect phenomenon, to make gasket to adjust the pad for the replacement of the damage.

       ( 3) Check the balance drum gap. In to segregate and emptying of the pump body, pump inlet and outlet valve are found there is a certain degree of leakage, due to the pump body to overhaul operations during device operation, thus failed to check the balancing drum and ring clearance data.

breakdown on pump bearing of boiler feed water treatment

(1) change the thrust bearing and thrust plate;

(2) to make the main lateral thrust adjusting pad and a replacement;

(3) found that the water pump main thrust bearing of the nozzle blockage of circumstances, to all pumps, gearbox and turbine bearing box and nozzle checked, clean the pipe line;

(4) in view of the main thrust bearing and thrust plate damage after a large number of metal particles through the return hose into the tank, affect lubricating oil quality, at the same time, it may jam the auxiliary oil pump population filter, so the fuel tank and filter also has carried on the auxiliary oil pump clearance, replacement of the lubricating oil.

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