A boiler feedwater pump is a critical component of many different industrial facilities and plants. A special class of centrifugal pumps, these pumps are used in a wide variety of plants, units, and production facilities in different models and sizes. However, many engineers and operators are unaware of BFW pumps. Often due to lack of knowledge or experience, improper operation or maintenance and repair have led to damage and serious problems.
A boiler feed water pump is a pump that circulates water in a boiler. The boiler feed pump circulates water in the boiler and distributes it to the various steam and hot water ducts. It consists of a motor, pump, and pump casing, and has various impellers and suction or discharge ports. They are the only source of water to the steam and hot water pipes.
These pumps are a special type of centrifugal pump. The pump impeller rotates in a circular motion. Pumps provide mechanical power for a variety of different applications. They can move liquids and gases. Pumps move liquids by taking pressure difference and transferring it to the liquid. Pumps are most commonly used to pump water.
The pump consists of an impeller that is attached to a shaft that turns the pump’s motor, which is typically an electric motor. The impeller is designed to draw just 1.0 hp (0.58 kW) of power.
The motor turns the impeller, which lifts the water into the boiler and returns part of the water back to the pump through a pipe called a discharge line.
Boiler feed pumps have to check valves to prevent water from being pumped back into the pump, and a strainer to prevent debris from clogging the pump. The strainer is often made of stainless steel.
Because the boiler feed pump circulates hot water, it must be capable of withstanding the high temperatures and pressures of a boiler. If it fails, the boiler will overheat and shut down.
- There are two main styles of boiler feed pumps: vertical and horizontal. This classification is based on the orientation of their shafts. Both pumps are radially split and have a casing that features a vertical joint relative to the shaft.
- Boiler feedwater pumps transport water into boilers using high pressure. Hence, a boiler feed pump can handle extremely high water pressure to deliver the feedwater into the boiler system. Generally, a boiler feed pump can handle the pressure of up to 100 bar. In most cases, there is a required pressure for the purpose of your boiler’s operation. It is essential that your chosen boiler feed pump can handle that requirement.
- Boilers produce steam. Pumps used to pump boiler feedwater are normally seeded with 230°F water but may see temperatures as high as 400°F based on the boiler’s demands. This means that boiler feedwater pumps can handle high amounts of temperature as well.
- Choosing the right boiler feed water pump
Boiler feed pumps are the lifeblood of central heating systems. Their job is to take hot water from the boiler and deliver it safely to each radiator. The job isn’t hard, but making sure the chosen pump is up to the task takes care.
Without a boiler pump, feed water can not be injected into a boiler and turned into steam. Choosing an effective boiler feedwater pump is crucial to produce steam and maintain industrial activities.
When getting a boiler pump for your industry, choose one from trusted manufacturers. In order for your boiler to run efficiently, you need high-quality pumps from reputable, quality-certified manufacturers. In general, a good boiler system is the result of the cohesive working function of each of its components. If your boiler feed pump does its job efficiently and effectively, then your boiler system is in good hands.