What is AOP in pump?

What is AOP in pump?

There are a number of LO pumps: auxiliary oil pumps (AOPs) driven by an AC motor, emergency oil pump(EOP) driven by a DC motor, and shaft-driven main oil pump (MOP). Generally these pumps are centrifugal with sufficient capacity.

What is the purpose 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.

What are the two most important criteria of a boiler feed pump?

Boiler feed pump must not only be able to supply feed water requirement; but also work as a condensate and makeup water pump when required. To ensure proper operation of these pump; feed water must be free from steam, air and insoluble solids.

What is the purpose of feed pump?

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 is the purpose of a lubricant?

A lubricant is a substance that helps to reduce friction between surfaces in mutual contact, which ultimately reduces the heat generated when the surfaces move. It may also have the function of transmitting forces, transporting foreign particles, or heating or cooling the surfaces.

What is the purpose of jacking oil pump?

The jacking oil pump is used in large turbine systems to prevent metal-to-metal contact in the bearings during turbine start-up. This is accomplished by applying high- pressure oil to the turbine shaft bearings, raising the shaft with the high-pressure oil.

What does a balance line do?

The balancing line then acts as a passage between the axial thrust balance device and the suction side of the pump. If heated to a certain limit, the liquid condensate may flash and lead to catastrophic pump damage.

Why feed pump should run continuously?

One of the feed pumps must always be running when the power packs are not in operation. If the feed pump stops, the “protection pressure Low” alarms will be initiated.

Which feed pump is commonly used?

There are two types of pumps that are most often used for boiler feed water applications: stamped stainless steel vertical multistage inline pumps and multistage horizontal ring section pumps.

Which type of feed 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.

Which pump is used for boiler feed water?

Boiler feedwater pumps are a special class of high-pressure centrifugal pumps used in many different models and sizes in many different plants, units, and production facilities. Boiler feedwater (BFW) pumps are an important part of many different industrial plants and facilities.

What are the 3 or 4 types of lubrication systems?

There are three different types of lubrication: boundary, mixed and full film. Each type is different, but they all rely on a lubricant and the additives within the oils to protect against wear.

What is the purpose of a feed water pump on boiler?

It helps maintain proper working of a boiler providing continues feed water supply. A continues feed water supply is essential for steam boilers; as it not only avoid overheating but any further damage to the boiler.

What is the function of a scoop tube in a boiler?

Answer Wiki. The Scoop tube which you are referring to is a part of Hydraulic coupling ( & not BFP) which is coupled to the Boiler feed Pump for varying the RPM. The hydraulic coupling in a power plant is coupled to a Motor (which is the driver) at one of its end & to the Boiler Feed Pump (BFP) at its other end which is being driven.

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.

How many types of pumps are there in a boiler?

While an large boiler such as on steam ship and power plant; have multistage centrifugal pumps. These centrifugal feed pumps are then further divided into two sub groups; steam driven and motor driven.

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