PUMPS

A pump is used to pull/push a liquid from lower level to higher level or to pressurize it.

TYPES OF PUMPTYPES OF PUMP

CENTRIFUGAL PUMPSCENTRIFUGAL PUMPS

ROTARY PUMPSROTARY PUMPS

CENTRIFUGAL PUMPCENTRIFUGAL PUMP This pump raises water from This pump raises water from

lower level to higher level with lower level to higher level with the action of centrifugal force.the action of centrifugal force.

The transfer of energy from the The transfer of energy from the mechanical rotation of the mechanical rotation of the impeller to the motion and impeller to the motion and pressure of the fluid is usually pressure of the fluid is usually described in terms of described in terms of centrifugal force, especially in centrifugal force, especially in older sources written before the older sources written before the modern concept of centrifugal modern concept of centrifugal force as a fictitious force in a force as a fictitious force in a rotating reference frame was rotating reference frame was well articulated. The concept of well articulated. The concept of centrifugal force is not actually centrifugal force is not actually required to describe the action required to describe the action of the centrifugal pumpof the centrifugal pump..

APPLICATIONSAPPLICATIONS

Common uses include water, sewage, Common uses include water, sewage, petroleum and petrochemical pumping. petroleum and petrochemical pumping.

The reverse function of the centrifugal The reverse function of the centrifugal pump is a water turbine converting pump is a water turbine converting potential energy of water pressure into potential energy of water pressure into mechanical rotational energy.mechanical rotational energy.

ADVANTAGESADVANTAGES A centrifugal pump takes up little floor space relative to A centrifugal pump takes up little floor space relative to

say a plunger pump and weighs comparatively little so say a plunger pump and weighs comparatively little so minimal structural reinforcement is required for the load minimal structural reinforcement is required for the load bearing floor space. bearing floor space.

It has a low initial cost as well as low maintainance cost It has a low initial cost as well as low maintainance cost since all motion is rotary and there are no sensitive parts since all motion is rotary and there are no sensitive parts such as the valves in a plunger pump. such as the valves in a plunger pump.

No air vessels or alleviators are required. No air vessels or alleviators are required. It can be keyed directly to a power source as it generally It can be keyed directly to a power source as it generally

has high working speeds and hence needs no stepping. has high working speeds and hence needs no stepping.

ROTARY PUMPSROTARY PUMPS A A rotary vane pumprotary vane pump is a is a

positive-displacement pump positive-displacement pump that consists of vanes mounted that consists of vanes mounted to a rotor that rotates inside of to a rotor that rotates inside of a cavity. In some cases these a cavity. In some cases these vanes can be variable length vanes can be variable length and/or tensioned to maintain and/or tensioned to maintain contact with the walls as the contact with the walls as the pump rotates. pump rotates.

1. pump housing2. rotor3. vanes4. spring

ROTARY PUMPROTARY PUMP The simplest vane pump is a circular The simplest vane pump is a circular

rotor rotating inside of a larger rotor rotating inside of a larger circular cavity. Vanes are allowed to circular cavity. Vanes are allowed to slide into and out of the rotor and slide into and out of the rotor and seal on all edges, creating vane seal on all edges, creating vane chambers that do the pumping work. chambers that do the pumping work. On the intake side of the pump, the On the intake side of the pump, the vane chambers are increasing in vane chambers are increasing in volume. These increasing volume volume. These increasing volume vane chambers are filled with fluid vane chambers are filled with fluid forced in by the inlet pressure. Inlet forced in by the inlet pressure. Inlet pressure is actually the pressure pressure is actually the pressure from the system being pumped, from the system being pumped, often just the atmosphere. On the often just the atmosphere. On the discharge side of the pump, the discharge side of the pump, the vane chambers are decreasing in vane chambers are decreasing in volume, forcing fluid out of the volume, forcing fluid out of the pump. The action of the vane drives pump. The action of the vane drives out the same volume of fluid with out the same volume of fluid with each rotation each rotation

APPLICATIONSAPPLICATIONS Common uses of vane pumps include high pressure hydraulic Common uses of vane pumps include high pressure hydraulic

pumps and automotive uses including, supercharging, power pumps and automotive uses including, supercharging, power steering and automatic transmission pumps. steering and automatic transmission pumps.

Pumps for mid-range pressures include applications such as Pumps for mid-range pressures include applications such as carbonators for fountain soft drink dispensers and espresso coffee carbonators for fountain soft drink dispensers and espresso coffee machines.machines.

Therefore the inlet and the outlet have a large chamber–maybe with Therefore the inlet and the outlet have a large chamber–maybe with swirl–where the oil drops fall out of the gas. The inlet has a venetian swirl–where the oil drops fall out of the gas. The inlet has a venetian blind cooled by the room air (the pump is usually 40 K hotter) to blind cooled by the room air (the pump is usually 40 K hotter) to condense cracked pumping oil and water, and let it drop back into condense cracked pumping oil and water, and let it drop back into the inlet. It eventually exits through the outlet. the inlet. It eventually exits through the outlet.

Variable displacement vane pump is used as an energy savings Variable displacement vane pump is used as an energy savings device, and have been used in many applications, including device, and have been used in many applications, including automotive transmissions, for over 30 years.automotive transmissions, for over 30 years.

ADVANTAGESADVANTAGES Flow is independent of pressure. You can change the Flow is independent of pressure. You can change the

flow without upsetting the pump's efficiency. flow without upsetting the pump's efficiency. The pump can handle high viscosity fluids efficiently. The pump can handle high viscosity fluids efficiently. The pump is self priming.The pump is self priming. You get a smooth pulse free flow of the liquid into the You get a smooth pulse free flow of the liquid into the

system. system. You can get the desirable high head low flow You can get the desirable high head low flow

combination that is need in many high pressure combination that is need in many high pressure applications. applications.

They give you a non-shearing action that will not They give you a non-shearing action that will not degrade sensitive petrochemicals and polymers .degrade sensitive petrochemicals and polymers .

PREPARED BY…PREPARED BY…

JANAMEJAY BRAHMBHATT JANAMEJAY BRAHMBHATT (FIEG11101)(FIEG11101)

HARSH GOSALIA (FIEG11107)HARSH GOSALIA (FIEG11107)

CHIRAG PANCHAL (FIEG11116)CHIRAG PANCHAL (FIEG11116)

SHYAM TRIVEDI (FIEG11129)SHYAM TRIVEDI (FIEG11129)

THANK YOU THANK YOU