Parts of centrifugal pump and their function pdf

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parts of centrifugal pump and their function pdf

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The Centrifugal Pump (pdf) - Grundfos

The Centrifugal Pump pdf - Grundfos. Mechanical, electronic, photographic or other reproduction or copying from this book or parts. We have written the book. Chapter 1. Introduction to Centrifugal Pump s Chapter 4. Pump theory Chapter 5. Pump losses Control of test results List of Symbols The centrifugal pump is the most used pump type in the world. The principle.

The re is a wide range of variations. The majority of pumps produced by Grundfos. The centrifugal pump creates an increase in pressure by transferring mechanical. The fluid flows from the inlet to the impeller centre and out along its blades. The centrifugal force hereby increases the fluid velocity and consequently. The principles of the hydraulic components are common for most centrifugal.

The inlet guides the fluid to the impeller eye. The design of. The design of the inlet aims at creating a uniform velocity profile into the. The fluid is sucked into the impeller at the.

Figure 1. The impeller has a number of impeller blades. The number mainly depends. The impeller is usually driven by an electric motor. The coupling between motor. Dry-runner pumps and canned rotor type pump. The advantage of the dry-runner.

The lifetime of mechanical. The fluid around the rotor. The leak flow. The impeller seal comes in various designs and material combinations. The axial. The impeller eye is affected by the. The end of the shaft is exposed to the. The axial bearing absorbs the entire axial thrust and is therefore exposed to.

The impeller must be axially balanced if it is not possible to absorb the entire. The re are several possibilities of reducing. The leak flow through the holes influences the flow.

The volute casing converts the dynamic pressure rise in the. The velocity is gradually reduced when the crosssectional. The return channel leads the fluid from one impeller to the next,.

The return channel reduces unwanted rotation in the fluid. The pumps are divided in five overall groups: Circulation pumps,. Pump s for pressure boosting are used for increasing the pressure of cold water. Water supply pumps can be installed in two ways: The y can either be submerged. The pumps are constructed making it possible. The pump is designed to minimise pipetransferred. The TP pump is used for circulation of hot or cold water mainly in heating,. The NB pump is for transportation of fluid in district heating plants, heat.

The pump is an endsuction pump, and it is found in many. The built-in pressure expansion. The SP pump is equipped with an integrated nonreturn. The CR pump is a vertical inline multistage pump. The pump is unique in the wastewater market because it can be installed. The single-channel pumps are characterised by a large free passage,. The SEG pump is in particular suitable for pumping waste water from toilets. The pump performance is normally described by a set of curves. This chapter.

Q , see figure 2. The requirements for head and flow determine the overall. The power consumption is used for dimensioning of the installations. The efficiency curve is. Dynamic pressure is a function of the fluid velocity. The dynamic pressure can. The barometric. The conversion from relative. A QH curve or pump curve shows the head H as a function of the flow Q. The pump is started and runs with constant speed. Q equals 0 and H reaches. The valve is gradually.

The QH curve is a series of coherent values of Q and H. The QH curve will ideally be exactly the same if the test in figure 2. The pressure increase across a pump can also be measured in meter water column. The total pressure difference across the pump is calculated on the basis of. The static pressure difference can be measured directly with a differential. The formula shows that the dynamic pressure difference is zero if the pipe.

The geodetic pressure P difference is zero when a differential pressure gauge. The power consumption depends on the fluid density.

The power curves. The relative static pressure on the suction side is measured to be p stat,in. The size and direction of the axial thrust can be used to specify the size of. The axial thrust is related to the head and therefore it scales with the speed. The chapter also explains the energy index for small circulation. The energy added to the fluid by the pump is partly lost as friction in. The regulation of speed is especially used in heating systems where. The total pump output is usually only necessarry in a limited period.

The head at a given flow for a serial-connected. The re are also a number of other regulation methods e. The conversion in speed is made by means of the affinity equations.

The proportional curve is an approximative. The differential pressure, e. The result is a low energy. The tests result in a load profile defined. The pump performance is regulated through. The purpose of this chapter is to describe the theoretical foundation of energy.

The relative and absolute velocity are the same in the.

Main Parts of a Centrifugal Pump

There are a few components that virtually every centrifugal pump has in common. These components include:. These parts can be subdivided into the wet end and the mechanical end. The wet end of the pump includes those parts that dictate the hydraulic performance of pump. The mechanical end includes those parts that support the impeller within the casing, seal the casing where the shaft passes through it and enable rotation — the means by which the wet end creates flow and pressure. The short explanation is that the impeller rotates at a high speed and imparts velocity to the water. The impeller is positioned within the casing, and the casing converts the velocity generated by the rotation of the impeller into pressure.

Apr 24, Articles. A wide range of processes and applications require the use of pumps for their operations in various industries. They can also be used in commercial and domestic applications. A great variety of high-pressure pumps are available in different sizes, designs, and features. Pumps play a significant role in the production process and are indispensable for smooth operations.

The Centrifugal Pump pdf - Grundfos. Mechanical, electronic, photographic or other reproduction or copying from this book or parts. We have written the book. Chapter 1. Introduction to Centrifugal Pump s Chapter 4.

Parts of a Pump | Components and Workings of a Pump

The hydraulic machine which converts the mechanical energy into Hydraulic energy is called Pumps. A foot valve is found at the end of a pipeline in a suction lift application. They function as a check valve , but they also have a strainer affixed to their open end. A pipe whose one end is connected to the outlet of the pump and other ends delivers the water at a required height is known as a Delivery pipe. And the more details of all the figures of the main parts of the centrifugal pump we have shown below.

Centrifugal Pump-Parts, Working principle, Application, Disadvantage, PDF

The Main Parts of a Centrifugal Pump

Centrifugal Pumps are most commonly used in industrial as well as Domestic applications for the transfer of fluids from one place to another place. Today, in this session, we are going to discuss components, working principle, priming, Advantages, Disadvantages, and Applications of the Centrifugal pump in a detailed way. Centrifugal pump works on the principle of centrifugal force i. Similarly, as the lifting of the liquid is due to the centrifugal action, these pumps are called centrifugal pumps.

Each centrifugal pump is made of hundreds of parts. There are a few components that virtually every centrifugal pump has in common. These components can be subdivided into the wet end and the mechanical end. The wet end of the pump includes those parts that determine the hydraulic performance of pump. The two primary wet ends are the impeller and casing. In some cases the first radial bearing can be water lubricated.

Centrifugal Pump

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Centrifugal Pumps are the most popular and commonly used type of pump for the transfer of fluids. In simple words, it is a pump that uses a rotating impeller to move water or other fluids by using centrifugal force. Centrifugal Pumps are useful since they can generally handle large quantities of fluids, provide very high flow rates which may vary with the changes in the Total Dynamic Head TDH of the particular piping system and have the ability to adjust their flow rates over a wide range. More viscous liquids such as 10 or 20 wt. For viscous liquids of more than 30 wt.

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details. Published on May 27, However, there are some parts that play major roles in the functioning. Those parts are de.

A pump is a device that moves fluids liquids or gases , or sometimes slurries , by mechanical action, typically converted from electrical energy into hydraulic energy. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift , displacement , and gravity pumps. Pumps operate by some mechanism typically reciprocating or rotary , and consume energy to perform mechanical work moving the fluid.


  • developed by the pump at different impeller sizes and rotational speeds. of a pump in the field. Figure B General components of Centrifugal Pump. Patricia B. - 23.03.2021 at 09:35