Asked by: Blandine Litago
business and finance mechanical and industrial engineering industry

What is an air vessel and explain its functions?

Last Updated: 27th April, 2020

35
Air vessels is basically a closedcontainerdesigned to hold gases or fluids at a pressure differentfrom theambient pressure. Air Vessels can theoretically bealmost ofany shape, but general used shapes are sections ofspheres,cylinders, and cones.

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Keeping this in consideration, what is an air vessel?

Definition of air vessel. A smallairchamber fixed to the pipeline on the discharge side ofareciprocating pump that acts as a cushion to minimize theshockproduced by the pulsations of the pump.

what are the main parts of reciprocating pump? The main components of reciprocating pump areasfollows:

  • Suction Pipe.
  • Suction Valve.
  • Delivery Pipe.
  • Delivery Valve.
  • Cylinder.
  • Piston and Piston Rod.
  • Crank and Connecting Rod.
  • Strainer.

Likewise, what is the use of air vessel in reciprocating pump?

The air vessel, in a reciprocating pump,isa cast iron closed chamber having an opening at its base. Thesearefitted to the suction pipe and delivery pipe close to thecylinderof the pump. The vessels are used togetcontinuous supply of liquid at a uniform rate and to save thepowerrequired to drive the pump.

Why an air vessel is provided at the summit in a Syphon?

Syphon. The highest point of the syphoniscalled the summit. An air vessel is provided atthesummit in order to avoid interruption in theflow.

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What is the use of air vessel?

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What does a pressure vessel do?

A pressure vessel is a container designed toholdgases or liquids at a pressure substantially differentfromthe ambient pressure. Pressure vessels canbedangerous, and fatal accidents have occurred in the historyoftheir development and operation.

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What is the difference between centrifugal and reciprocating pump?

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What is the principle of reciprocating pump?

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What is double acting reciprocating pump?

A double acting pump is one which has twosuctionvalves, delivery valves and two suction and delivery pipes.Indouble acting reciprocating pump suction anddeliverystrokes occur together. Due to the reciprocatingaction ofpiston or plunger the water is fed to discharge side andit isemptied to the delivery pipe.

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What is separation in reciprocating pump?

The continuous flow of liquid will not exit whichmeansseparation of liquid takes place. The pressure atwhichseparation takes place is called separationpressureand head corresponding to the separation pressure iscalledseparation pressure head.

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What is slip in reciprocating pump?

Slip in reciprocating pump is the measureofdifference between theoretical discharge and actual discharge.Andwhen actual discharge delivered by reciprocating pumpismore then theoretical discharge then that difference is calledasNegative Slip.

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Does cavitation occur in reciprocating pump?

Cavitation can occur with basically any kindofpump . Cavitation commonly occursinCentrifugal pumps if pump installation isnotproperly done as per the design . But yes it is also observedinReciprocating pumps while there is high velocity suctionordischarge.

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Why is it necessary to prime a pump?

Priming industrial pumps is essentialtousing your pump for its intended applications andtomaintain the equipment. Priming is the process ofremovingair from the pump and suction line to permitatmosphericpressure and flooding pressure to cause liquid to flowinto thepump.

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What is the function of intensifier?

A hydraulic intensifier is a device which isusedto increase the intensity of pressure of any hydraulic fluidorwater, with the help of the hydraulic energy available from ahugequantity of water or hydraulic fluid at alowpressure.

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What is the positive displacement pump?

Positive displacement pump (PDP) is a typeofpump in which a moving fluid is captured in a cavityandthen discharges that fixed amount of fluid. some ofthesepumps have expanding cavity at the suction side andadecreasing cavity at the discharge side.

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What is meant by specific speed?

Specific speed is an index used to predictdesiredpump or turbine performance. i.e. it predicts the generalshape of apumps impeller. It is this impeller's "shape" thatpredicts its flowand head characteristics so that the designer canthen select a pumpor turbine most appropriate for aparticularapplication.

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What is cavitation in pumps?

Simply defined, cavitation is the formationofbubbles or cavities in liquid, developed in areas of relativelylowpressure around an impeller. The imploding or collapsing ofthesebubbles trigger intense shockwaves inside the pump,causingsignificant damage to the impeller and/or thepumphousing.

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What is priming in centrifugal pump?

Priming is the process in which the impeller ofacentrifugal pump will get fully submerged in liquidwithoutany air trap inside.This is especially required when thereis thefirst startup.But it is advisable to start the pumponlyafter priming.

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What are the types of pumps?

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What are the components of a pump?

Most centrifugal water pumps consist of a fewbasiccomponents:
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What are the advantages of reciprocating pump?

Advantages of Reciprocating Pumps
High Pressure, Low Flow Applications:Reciprocatingpumps are generally designed to pump inlow flow, highhead applications.

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What are the main parts of a centrifugal pump?

Main Parts of a Centrifugal Pump
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  • Casing (Volute). The casing contains the liquid and acts asapressure containment vessel that directs the flow of liquid inandout of the centrifugal pump.
  • Shaft (Rotor). The impeller is mounted on a shaft.
  • Shaft sealing.
  • Bearings.

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What are the two types of piston pump?

The two main types of piston pump arethelift pump and the force pump. Both typesmaybe operated either by hand or by an engine.

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27th April, 2020

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