Horizontal multistage centrifugal pumps are a type of centrifugal pumps that contain two or more impellers. Each stage in a multistage pump acts like a separate pump. They are primarily used in services requiring moderate to high TDH (Total Dynamic Head).
All stages of a multistage are places within the same housing unit and installed on a single shaft. Up to eight stages can be placed on a single horizontal shaft. If you need more than that, you can use multiple shafts. Each stage reduces the head by the same amount.
Sintech Pumps is the leading horizontal multistage centrifugal pumps suppliers in India for over three decades. Our series of multistage centrifugal pumps are built to world-class standards. The user-friendly design makes the pump suitable for both industrial and domestic applications.
What is the difference in working between Single Stage Centrifugal Pumps and Multistage Centrifugal Pumps?
The more the number of stages a pump has, the higher the discharge pressure on the outlet. Multistage centrifugal pumps are designed to create higher pressure at each stage. However, the flow remains constant at all stages.
Each stage in a centrifugal pump has a:
Rotor
Diffuser
Directional return blades
All these three components are housed within a single housing unit. The heat generated by a single-stage centrifugal pump depends on the circumferential speed and the type of impeller used. The biggest drawback of centrifugal pumps is that the rotational speed cannot be altered. As a result, this could become operationally inefficient in certain applications.
However, if the number of stages can be increased, this operational inefficiency can be overcome. This is where multistage centrifugal pumps come into play.
In a multistage pump, the transferred liquid flows through two or more impellers that are connected in a series. These pumps have several fluid chambers that are connected in series. The fluid enters the first chamber. At this stage, the fluid’s pressure is the same as the pressure on the suction line. Once the fluid leaves the first chamber, the pressure is further increased. This keeps on repeating until the fluid reaches the last chamber.
Advantages of Multistage Centrifugal Pumps
Here are the top advantages of using multistage centrifugal pumps when compared to single-stage centrifugal pumps:
Multistage pumps are economical and can cover higher pressure ranges than a single stage pump.
Another advantage is that it can help in increasing pressure at each stage.
However, the one drawback of multistage centrifugal pumps is the increasing sensitivity to external vibrations. Multistage centrifugal are used in a variety of applications like boiler feed pumps, power station pumps, and other industries that require fluids at high pressures.
Depending on the configuration and make, the rotors in these pumps can be mounted on a single shaft or different shafts. Multistage centrifugal pumps create higher pressure when compared with pumps with just one impeller.
if high discharge pressures are required, then the rotors in the multistage pump are connected in series.
On the other hand, if high capacity is needed, then the rotors are connected in parallel.
Horizontal Multistage Centrifugal Pump
Multistage centrifugal pumps are divided into two major types:
Vertical multistage pumps – these pumps have a vertically mounted shaft
Horizontal multistage pumps – as the name implies, the shaft is horizontally mounted
Let’s take a closer look at horizontal multistage centrifugal pumps. They have a modular interstage with segmented housing. The swivel assembly is fixed between the bearings, thereby making the entire assembly suited for high pressures.
Horizontal multistage centrifugal pumps can handle higher flow rates when compared to vertical multistage centrifugal pumps.
Horizontal multistage pumps are best used for:
Boiler feeds
Reverse osmosis applications
Showers
Pressure boosting
High pressure cleaning
Spraying
Cogeneration
Mine dewatering
Snow making, etc.
Multistage centrifugal pumps offer several benefits over regular single-stage centrifugal pumps. Energy savings, flexibility, ability to meet numerous flow/height requirements.
Finding the right horizontal multistage centrifugal pump that best suits your application can be challenging. But, worry not, Sintech is here to help you out. As the top horizontal multistage centrifugal pump suppliers in India, we can customise the best centrifugal pumps for your needs. Get in touch with us to know more and find the best pumps for your needs.
