What is the function of boiler feed pump?

What is the function of boiler feed pump?

function of feed pump in a boiler is to feed water to boiler. Two type of feed pumps are generally used in boilers-positive displacement type and centrifugal type.in some pumps special device or accessory is used to keep the water at saturation pressure and release over pressure.

What is the function of the feed water pump of a boiler Mcq?

Explanation: Function of feed water pump is to pump water at high pressure to the water space of the boiler drum.

How does a boiler feed water system work?

Boiler feedwater is an essential part of boiler operations. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat. From this tank it then goes back to the steam drum to complete its cycle.

What is recirculation line in boiler feed pump?

Recirculation is defined as returning the pump discharge flow to the point where the pump has suction so that a minimum flow requirement of the pump is ensured through the pump (even when there is low/no load demand to the system from the pump).

What is the function of plunger?

The plunger displaces the available volume through its own volume and increases the pressure of the fluid to be pumped. The suction valve closes and the pressure valve opens the way into the process area for the pressurized fluid.

What is the function of safety valve in the boiler?

In steam systems, safety valves are typically used for boiler overpressure protection and other applications such as downstream of pressure reducing controls. Although their primary role is for safety, safety valves are also used in process operations to prevent product damage due to excess pressure.

How to check feed pump in boiler?

Check feed pump vibration are normal 7. Check balancing leak off pressure is normal 8. Check bearing temperature of main pump, motor and hydraulic coupling bearings are normal 9. Check the lube oil drain flow again 10. Open the feed pump discharged valve and take the flow as per requirement in boiler 11.

How to check the condition of the boiler?

Check bearing temperature of main pump, motor and hydraulic coupling bearings are normal 9. Check the lube oil drain flow again 10. Open the feed pump discharged valve and take the flow as per requirement in boiler 11. Check recirculation valve operation after sufficient discharge flow is maintained.

What should I do if my feed pump is not working?

1. Insure that no PTW (Permit to work ) is pending 2. Check feed pump gauges in UCB ( unit control Board )are in proper working order 3. Check all remote operated valves have been given power supply and confirm their proper operation with local operator. 4. Check Deaerators level is normal 5. Check lube. Oil pressure is OK 8.

What should be the feed water flow through the pump?

Feed water flow through the pump at any instant should not be less than 200 T/hr. If it is less open the recirculation valve informing UCB ( unit control Board ) and see that the flow raises. 9. Feed water temperature at discharge of pump around 170 degree Celsius at normal working conditions 10.