Table of Contents
What is the function of balancing line in boiler feed pump?
Balance line is used to balance the centrifugal pump shaft from axial thrust. Due to the axial thrust, pump bearings and internals will get damaged. To nullify this effect, a tapping from discharge end (between balancing & counter balancing disc) is connected to a balancing drum.
What is the function of feed water pumps?
A feed pump is a type of pump that supplies water to a boiler to produce steam. For industrial purposes, a feed pump supplies a liquid for further processing. These pumps are high-pressure pumps and are generally of two types: Positive displacement type feed pumps.
What are the main parts of the feed pump?
Parts of Boiler Feed Pump
- 1 ) Casing. A casing is the air tight shell or cover surrounding pump impeller; which covers, protect and provide support for the pump assembly.
- 2 ) Impeller.
- 3 ) Shaft.
- 4 ) Shaft Sleeve.
- 5 ) Balance Chamber.
- 6 ) Wear Rings.
- 7 ) Mechanical Seal.
What is injector in boiler?
injector, a device for injecting liquid fuel into an internal-combustion engine. The term is also used to describe an apparatus for injecting feed water into a boiler. Boiler feed water injectors employ a high-velocity steam jet to force water into the boiler.
What is balanced and unbalanced line?
Unbalanced transmission uses one signal wire that carries the voltage. The ground wire acts as a reference point. Balanced transmission uses two signal wires that both carry the voltage – but the signal on one of them is phase-shifted by 180°, so it is exactly inverted.
What is balanced and unbalanced network?
A balanced signal path is a two-conductor circuit in which both conductors (and all circuits connected to them) have the same impedance with respect to ground and to all other conductors. In an unbalanced signal path, the conductors do NOT have the same impedance with respect to ground.
What is the function FPT feed pump turbine?
The feed pump raises the feedwater to a pressure high enough for it to enter the boiler. For auxiliary boilers, where small amounts of feedwater are pumped, a steam-driven reciprocating positive displacement pump may be used.
Which type of pump is used in boiler?
centrifugal pumps
Today, all boiler feed pumps are centrifugal pumps. The design of boiler feed pumps regarding power input, material, type of pump and drive is largely governed by the developments which have taken place in power station technology.
Why a balance chamber is used in boiler feed check?
To nullify this effect a balance chamber is used in boiler feed check. A balance line is taken from the discharge side of the pump and connected to the balancing drum in the balance chamber. In many pump design an additional recirculating line is provided to avoid pumps; to run dry or at low flow rate.
What is a balance line in a boiler feed pump?
A balance line is taken from the discharge side of the pump and connected to the balancing drum in the balance chamber. In many pump design an additional recirculating line is provided to avoid pumps; to run dry or at low flow rate. These in line multistage boiler feed pump require a minimum flow rate to work properly.
What is the working principle of a boiler feed pump?
Working Principle of a Boiler Feed Pump The work of a boiler feed pump is to discharge the condensate boiler feed water from hotwell to the boiler drum. With the rotation of shaft and impeller the hot feed water is thrown outwards radially across the walls of the pump; along the path of the flow.
What is the purpose of a balancing chamber on a pump?
We’ve put together a list of 8 money apps to get you on the path towards a bright financial future. The balancing chamber is there to counteract the axial thrust on the impeller caused by the pumping action. Minimum flow lines are for pump protection.
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